All OER Journal Articles


Strategic intrapreneurship is an emerging concept and to a large extent can be adopted as a determinant of business development in Nigerian Commercial Banks. It is a concept with a high attraction due to its beneficial effect on revitalization and performance of firms. However, the concept has recorded high failure rate and the global picture of the relative contribution of intrapreneurship (cooperate entrepreneurship) has not been documented or subjected to any rigorous research efforts in literature, especially in…
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The focus of this paper is to analyze Organizational Change Management as a strategic approach to organizational effectiveness. And the main objective is to determine the strategic change approaches that may influence organizational effectiveness. The authors deem it fit to employ an exploratory research approach in this study. The method intends to rely heavily on secondary data as well as some factual documents. Thus, some literatures and documents relevant to the problem under study were exhaustively reviewed in…
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The study focus on the relationship between intrapreneurship practice and value creation in six selected commercial banks in Nigeriato i: examine the level of intrapreneurship practice in Nigeria banks; ii: determine the relationship between intrapreneurship practice and value creation in the commercial banks; The study utilized descriptive survey design. The Cochran formula was used to arrive at a sample size of 549 being heads of strategic units and the staff of the various units. The result reveals that…
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Microteaching, a teacher training technique currently practiced worldwide, provides teachers an opportunity to perk up their teaching skills by improving the various simple tasks called teaching skills. With the proven success among the novice and seniors, microteaching helps to promote real-time teaching experiences. The core skills of microteaching such as presentation and reinforcement skills help the novice teachers to learn the art of teaching at ease and to the maximum extent. The impact of this technique has been…
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In this paper, the design and implementation of automatic tamper detection and reporting capability of Energy meter was carried out. The system has the capability to detect bypass internally on the meter and externally on the service cables from the electric pole. It also incorporates wireless disconnection and connection of load capabilities. This becomes imperative as a result of high rate of energy theft that arises from meter tampering. The system comprises of a developed Single Phase Prepayment Energy Meter…
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Before now, firms seemed concentrated more on the acquisition of physical assets to provide the means of streamlining operations and effectively compete in the operative industry. Every organization which are interested in being relevant within the operative industry; there is no doubt that such firm requires up to date and productive knowledge to constantly improve and enhance the efficiency in which they operate in the marketplace. The study therefore investigates the imperative of the KM as a tool…
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In this paper, a mathematical analysis of a Small-Signal Single-Stage Transistor Amplifier using Hybrid
Parameter and the development of a software to aid this analysis was carried out. This was borne out of the desire to be able to
correctly and accurately analysis small signal transistors to get the required performance quantities that can be used in the
design of circuits. Also, the need to carry out this analysis with minimal error and time was of great motivation for this READ MORE Download Staff Profile


In this paper, a developed GSM-Based SMS token recharge system for Prepayment meters is presented. The versatility of the GSM technology is put to use to enable wireless meter recharge to the comfort of the users.
The meter consists of ADE7755 used to generate the consumption pulses that are measured and recorded by Atmega328P. Atmega2560 was used to manage the unit according to consumption. It also controls and monitors the activities of the meter and communicates using SIM900 to achieve…
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Considering the present state of the labour market where unemployment is ravaging the economy, there is the need to look into the empowerment scheme in Nigeria in the context of seeing empowerment as a tool for economic growth and development. This study is focused on the level of awareness about empowerment and its impacts on the Nigerian citizens. The study employs survey design as its research approach. The sample frame consists of all 2014 2015 masters students in…
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In this paper, a Short Message Service (SMS) Based Prepayment Energy Meter Monitoring System for
Consumers and Utility Companies is developed. This is borne out of the desire of consumers to be able to monitor their meters
especially their consumption. Also, the utility companies need to be able to monitor energy meters wirelessly especially for
energy auditing and other control as may be needed. The Energy Meter consists of ADE7755 for consumption pulse
measurement which is recorded by arduino Atmega328P.…
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This paper presents a method of Token Validation of a wireless recharge token in Prepayment Energy meter
without recourse to any server. Most proposal on wireless recharging have suggested token validation at the server in the
Supply Authority’s office. The need for Prepayment Energy Meter to be able to validate token from a wireless source without
the help of an intermediary system is highly desirable. The Prepayment Meter is realized with an ADE7755, Atmega328 and
Atmega2560 in its circuitry among…
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This paper presents a GSM-based Prepayment Electric Energy Meter implemented with hybrid recharging mode:
Mobile Station (MS), Supply Authority Platform and the Keypad. The system was designed around two modules; the hardware
and software. The hardware module consists of ADE7755 used to generate the consumption pulses that are measured and
recorded by Atmega328P. Atmega2560 was used to manage the unit consumption; control and monitor the activities of the
meter. SIM900 was used to achieve the SMS recharging and communication capability.…
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This paper presents the analysis of the h-parameter of a single stage small signal transistor amplifier using twoport
network. This is motivated by the need to have the rudimentary knowledge of the h-parameter transistor analysis model
and to demonstrate its equivalence in the three configuration of the transistor. In this analysis, it was borne in mind the
characteristics of a small signal operating conditions of the transistor. Among these characteristics is the assumption that Small
– signal operations applies when…
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In this paper, an Application Platform (AP) and Token Generation Software for prepayment meter administration
was developed. This is a response to the need to develop a vending software and platform that can recharge a generated token
seamlessly into the meter apart from the traditional keying-in of token into meter through keypad. Also, it is motivated by the
need to reduce the cost of token generation infrastructure by having a software for token generation achieved with local
material. It is…
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In this paper, an assessment of prepayment electricity consumers’
experiences and the desired improvements on existing meters in
parts of Benin City and Warri was carried out. The methodology
involved field data collection through the use of questionnaires
on electricity consumers especially those using prepayment
meters in Benin City, Edo State and Warri, Delta State. The field
data were collated and analysed to determine the extent the
suggested improvements were actually desired by the users. The
results show that no…
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This paper presents a comparative analysis of measurement accuracy of single phase prepayment meters under different loads. This study was motivated by users complain on variations in metering from different energy meter models.
The experimental method was adopted in this study.The experimental setup involved a digital stop watch, the developed meter and two specimensof existing commercial meters. These meters were connected to varying load under the same measurement conditions. The time taken to consume 0.01kWh in each load category for…
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Nigeria like most other African countries has responded to the growing challenge of poverty by introducing social protection strategies. Despite the rising popularity of social protection as an anti-poverty intervention throughout Africa, social protection is still inadequate in Nigeria. This article examines major social protection arrangements in Nigeria and challenges associated with them. The article begins by providing a general perspective on poverty and social protection in Nigeria. The article brings into view major reasons for the inadequacy…
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The microbiological and physico-chmical properties of yam chips (elubo) sold in four markets (IP, GM, OT and AG) in Ilorin and its environs alongside a laboratory-prepared control (CTRL) was monitored for six months. Bacterial and coliform counts were carried out on the samples at 2 weeks interval and sample AG had the highest bacterial and coliform counts which were 219.0 x 10 Cfu/g and 31.0 x 10 Cfu/g respectively while the control sample had the lowest bacterial count…
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The use of synthetic herbicides poses a serious threat to environment, health and food safety. The development of safe and effective bioherbicides for selective control of weeds is thus the primary concern in crop production around the world. Efforts are being made to investigate the use of a safe, ecofriendly and highly selective herbicides from biological origin. Coumarin and its derivatives are natural compounds renowned for their phytotoxic potential. Mellein, a dihydroisocoumarin designated as (R)-8-hydroxy-3-methylisochroman-1-one was isolated as…
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Abstract: Electronic dumping is a global challenge and fortunately majority of these wastes could be recycled can
provide an economically viable and healthy environment as well as offer new insights on how potential sources of
environmental hazards could be transformed into useful products. In this paper, we present data used during the
creation of an automated power outlet system from electronic wastes. Automated power control and distribution
systems are important in reducing the cost of energy utilization in homes, offices,…
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Extracellular laccases were extracted from a 5-day old submerge cultures of the wild, mutants and hybrid of Lentinus subnudus. Mutants were generated by exposure of the wild strain of L. subnudus to ultraviolet radiation ( 280 = ? nm) at specific time intervals while the hybrid was produced by cross-breeding L. subnudus with L. edodes. The crude enzyme was fractionated with 80% ammonium sulphate and further purified on DEAE column. The laccase has a molecular weight of about…
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Abstract: The continuous decline in quality medical healthcare delivery to rural communities in developing
countries is what necessitated this study. Most patients in remote areas cannot afford transportation to the
nearest healthcare facility providing the necessary medical services relevant to their situation. Provision of
support services and continuous medical education for those healthcare professionals working in rural areas
are extremely difficult. Telemedicine is a feasible tool to address these issues. In this paper, we proposed a
framework for web-based and…
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Abstract

Wave propagation through crystal was analyzed using wave equation in conjuction with pseudo-dielectric function...


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In recent years, most Wireless Local Area Networks (WLAN) are based on the IEEE 802.11b, 802.11a,
802.11g or 802.11n standards. These standards define how to wirelessly connect computers or devices to
a network. Wireless enabled devices can send and receive data anywhere within the range of a wireless
access point. The choice of the Wireless LAN protocol depends on the requirements of the individuals or
a company who aims to implement the WLAN infrastructure. Some of the parameters that should…
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Abstract.
Rain fade refers primarily to the absorption of a microwave Radio Frequency signal by atmospheric
rain, snow or ice, and losses are especially prevalent at frequencies above 11GHz. The degradation of
a signal caused by electromagnetic interference of leading edge of a storm front is also referred to as
Rain fade. It does not need to be raining at a location for it to be affected by rain fade, as the signal
may pass through precipitation many miles away,…
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ABSTRACT
The problem of effective healthcare delivery system in most African countries especially remote
areas cannot be over emphasized as the populace experience poor healthcare delivery due to high
level of poverty, shortage of trained and experienced medical personnel and poor roads to limited
health facilities available in the urban areas. In this study, we proposed an architectural
framework for web-based telemedicine system in which a remote medical centre can access the
medical resources available in urban medical centres via…
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Abstract
Communication is an integral part of man without which it will be practically impossible for man to achieve
anything meaningful in life. It is a fact that most 21st century organizations have a network of computers in place,
however majority of these organizations have not fully utilize the facilities available to them on their network. In
this paper, we present the implementation of VoIP, desktop sharing, virtual team, file sharing, life chat and internal
memo transmission on a network…
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ABSTRACT
The need for viable and credible election has become an essential requirement, if most
Africa nations will still continue to exist as indivisible sovereign nations and sustain their
nascent democracy. In order to achieve this, electronic voting (e-voting) system becomes
inevitable because traditional methods of voting used for previous elections were found
to be characterized with various degrees of irregularities and lack sufficient credibility
required for a democratic system. In this research work, the e-voting system proposed
here was…
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ABSTRACT
Quest for precision components and parts in manufacturing industries has led to an increase in the need for
effective and efficient finishing operations that can satisfy this increasing demand. Grinding process can meet these
critical needs for accurate and economic means of finishing parts, and generate the required surface topography.
Modeling of grinding is necessary to understand the effects of process conditions, grinding wheel properties and
workpiece material dynamics thus allowing for process planning, optimization, and control. In spite…
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Abstract

in this work, the electron gas energy of some liquid metals and alloys were computed based on statistical physics approach...


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Abstract— This research presents a method of developing Bayesian Network models of complex systems using data sourced from open survey. The process of collection and conversion of random survey information into probability forms are shown with emphasis on integrating expert knowledge and respondents’ responses into a Bayesian system model. Random survey questionnaires were administered to customers of an online store to capture their responses about factors that make for efficient product delivery and quality website design. The responses and other…
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The paper reports on the distribution transformer failure in some selected substations in Ekpoma Undertaking of the National Electric Power Authority (NEPA), of Nigeria. The study revealed that most of the damaged distribution transformers were either due to lightning strikes or overloading effects. The effect of these, results to incessant power failure and load shedding. It was also revealed that poor earthing of the substations were responsible for failure resulting from lightning strikes and hence damages to the distribution transformers.…
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The solar energy conversion efficiency of a 100watts, 12 volts solar panel mounted in Ambrose Alli University, Ekpoma, Nigeria is presented. The conversion efficiency parameters of interest were the maximum power point and the fill factors .These factors were evaluated using the short circuit current , open circuit voltage, current and voltage for various resistive loads which were measured directly using 2 digital Multimeter DT9205A. The highest solar energy conversion efficiency of about 50% occurs at 1,00pm and the maximum…
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This paper examines the controlled variation of the r.m .s value of the alternating voltage applied to a load via thyristor · thyristor based power controller scheme. The thyristors are connected jn Inverse Parallel configuration. Analyses of the first fundamental component of the Fourier series of the load current were presented. The normalize val ue of the load current (ILnorm) at various firing angle ( ?) varying from 0 to 180° were obtained and plotted . The thyristor·thyristor pair shows…
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The focus of this paper is on the controllability and observability of an active suspension system used in automobile. The primary responsibility of control system Engineers is to design and implement controller. The active suspension system dynamics was captured by a mathematical model. The system transfer function model was determined by using the road disturbance as input and the car response as output. The state - space representation was subjected to controllability and observability test using MATLAB commands. The result…
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Transformers are electromagnetic energy transformation devices which operate on the principles of electromagnetic induction. The devices transform alternating current voltage from one value to another at a constant frequency. This work reviews the development of these functional devices using locally available materials in Nigeria. The design stages, material selection, manufacturing techniques, performance parameters such as efficiency, voltage regulation and power factor were also discussed. Some applications of the locally developed transformers were presented. The possibilities of producing larger power transformers…
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Car suspension system is a mechanism that separates the car from the tire. The objective of the suspension system is to improve a ride quality by ensuring passenger's comfort and good car road handling when the car is subjected to an input excitation. The dynamics of the suspension system was mathematically modeled. The system transfer function determined. The suspension system performance characteristics of overshoot and settling time set at not more than 5% and 5seconds respectively. Frequency response controller was…
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The effect of time on photovoltaic power generation in Nigeria is investigated in this work . From the study it is clear that the voltage generated depends on time of the day, time of the year, climatic conditions and the geographical location of the site.

The power generated is only available during the day between 6.00am- 7.00pm local time, in the month of January. While in July beyond 7.00pm power was still generated, longer day. Between 7.00pm to 6.00 (night…
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A multi-zone solution to vertical transportation in high-rise buildings is proposed. Typical examples are presented to illustrate the validity of approach. The most economic and efficient number of zones for given building heights and population is derived. The criteria for the delimitation of zones for particular buildings is also presented. This approach .eliminates long queues at main lobbies as lift passengers travelling to different floor levels easily pick the lift cars serving their floors. The alternative solution to zoning-single zone…
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Leakage of current to earth due to insulation breakdown between the live conductor and earth could have disastrous consequences on the sqfety of operating personnel of high­ voltage and heavy - duty electrical machines. In addition, the output power of the given equipment drastically reduces, leading to unsatisfactory performance. It is absolutely necessary therefore, to interrupt and isolate such faults quickly, with minimum delay. A high sensitivity, fast response, voltage-operated earth leakage circuit breaker (ELCB) with in-built discrimination is presented.…
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Control circuit for an electric blender is designed and constructed. It uses two 555 timers, one is connected in the monostable mode which determines the overall period of operation, while the other is connected in a stable mode which determines the intermittent operation of the blender. This saves the operator from the rigour of continuous switching 'ON ' and 'OFF ' until processing is completed. A transistor amplifier is used to supply the sufficient current Ic to energize the 12
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The effect of load variation on 1.4kVA, 2-l/220volts, 50Hz, single phase inverter is presented in this work. The inverter is fed from a 120A-H, 24 volts battery to produce a 220volts, 50 Hz to power alternating current loads. The no-load voltage was recorded to be 24volts. Eight, 200watts .filament bulbs were used as loads in this experiment. The load was varied in step increment of 200watts by bulb addition. As the load increases, the load current and voltage and terminal
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This paper presents the design and construction of a 5KVA A. C electric arc welding machine using locally available tools and materials. The A. C electric arc welding machine which has a step down transformer on testing shows efficiency of 97%, voltage regulation of 86% and power factor of 1.0. A cost analysis revealed that the locally fabricated welding machine would cost only #37,525.00 as compared with N50,000.00 which is the current cost of the imported welding machine of similar…
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he mains voltage is 240 volts at 50Hz in United Kingdom, Russia and Nigeria, where as the mains voltage is 110volts al 60Hz in United Stale of America and the rest of Europe. This paper present design, construction and testing of a static converter, which converts the 240 volts 50Hz mains supply to 110volts, 60Hz. The converter is necessary as it enable electronic equipment design for the American and European market to  operate satisfactorily in Nigeria. The fabricated converter worked…
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This paper examines the failures associated with the Grid System of the National Electric Power Authority in Nigeria, for a period of seven years (January 1995 December 2001). The study revealed that the nation experienced a total of 95 grid system collapses, of which 37 was for the total collapses and 58 partial collapses. In addition, the year 1997 recorded the highest number of system disturbances. It was followed by the year 1998. The values of the disturbances were 20…
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Abstract
Decision making process in stock trading is a complex one. There are numbers of technical indicators that are used by traders to study trends of the market and make buying and selling decisions based on their observations. This research seeks to deploy fuzzy inference to stock market, with four indicators used in technical analysis to aid in the decision making process in order to deal with probability. The four technical indicators are the Moving Average Convergence/Divergence (MACD), Relative Strength…
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ABSTRACT
Hypertension is a global public health issue as it is the most common cardiovascular disease
worldwide. Being one the few diseases that come with complications, this study investigated the
level of compliance of hypertensive patients with treatment regimens among such patients
attending outpatient departments of selected tertiary hospitals in Benin City, Edo State, Nigeria.
A cross-sectional descriptive research design was used. A sample size of 309 was selected
from a total population of 946. A convenient sampling technique and…
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Abstract

The choice of an ideal or appropriate smoothing parameter in multivariate kernel density estimation is considered by looking at six different methods...


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Abstract

the rules for choosing smoothing parameter are generally based on the relatively simple but important ideas of balancing bias and variance globally.


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Abstract The bivariate kernel density estimator is fundamental in data smoothing methods especially for data exploration and visualization purposes due to its ease of graphical interpretation of results. The crucial factor which determines its performance is the bandwidth. We present new methods for bandwidth selection in bivariate kernel density estimation based on the principle of gradient method and compare the result with the biased cross-validation method. The results show that the new methods are reliable and they provide improved methods…
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ABSTRACT
Boosting is a bias reduction technique while bagging is a variance reduction method. These two
methods aim at reducing the asymptotic mean integrated square error (AMISE). This study aims to
show that bagging is a boosting algorithm in kernel density estimation since both techniques use large
smoothing parameter(s). This relationship was verified by real and simulated data.


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ABSTRACT
Kernel density estimation depends on appropriate smoothing parameter selection in its implementation since the method
is mainly for data exploration and visualization purposes. While considering the effect of the smoothing parameter, the
form of aggregation employed will determine the size of the smoothing parameter required for better performance. This
paper considered two aggregating methods with respect to the asymptotic mean integrated squared error (AMISE) as the
criterion function by introducing the multiplier factor that regulates the selection of smoothing…
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Abstract

The application of superabsorbent polymers(SAPs) and/or biochars to stressed lands offer solutions to several critical ecological, energy and economic challenges posed by degraded lands due to human activities.


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Abstract

The oil from edible avocado pear (Persea americana) and African pear (Dacryodes edulis) were extracted with Chloroform...


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Abstract

In continuation of the search for a more environment friendly and cost effective waste management technique, this study focused on evaluating the effect of varying...


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The consistent application of agrochemical herbicides has been reported to impact negatively on human health, environment, and food safety, and facilitated the emergence of weed resistances. Rhizosphere bacteria (RB) of different crops were screened for antagonism against Amaranthus hybridus L. (pigweed) and Echinochloa crusgalli (L.) Beauv. (barnyard grass) using necrosis assay technique. A total of eight rhizosphere bacterial isolates (B1–B8) produced different degrees of leaf necrosis on target weeds with isolate B2 manifesting the most significant necrotic activity.…
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This study was carried out to optimize and enhance the production of phytotoxic metabolites from Lasiodiplodia pseudotheobromae (C1136) for its herbicidal properties using solid-state fermentation with various agricultural wastes available in Nigeria. The results obtained showed that banana peel (10.12 ± 0.10 g/100 g) and wheat bran (9.89 ± 0.11 g/100 g) had the highest protein content. Banana peel was observed to have the highest value of phosphorus (0.30 ± 0.05 g/100 g), closely followed by wheat bran…
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In a bid to enhance storability of highly perishable and seasonal onion bulbs in Nigeria, a study was conducted to control post harvest spoilage of onions using crude extracts of Jatropha curcas mainly from stem and leaves. Fungi associated with onion bulb rots were isolated on Potato Dextrose Agar medium and their pathogenicity was established by testing for their ability to induce rot in healthy onion bulbs. Ethanol extracts of leaves and stems of J. curcas were then…
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Keratinase enzymes are a special type of protease that has a bio-degradative potential for degrading keratin-containing substrates by the enzymes they produced during bioprocessing. The study was carried out to investigate the effect of microbial degraded feather meal on broiler chickens. The strain was previously isolated from a feather dumping site. The effects of crude and immobilized enzyme-degraded feather meal were investigated on growth performance, haematology and intestinal histology of broiler chickens. Maximum activity of the keratinolytic enzyme was at…
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The antimicrobial activities and preliminary phytochemical screening of methanolic extract of Vitellaria paradoxa was performed against clinical isolates obtained from UITH which included Staphylococcus aureus, Escherichia coli, Aspergillus niger and Candida albicans. Leaf extracts of Vitellaria paradoxa were prepared using methanol as solvent. The extracts were tested using agar diffusion and broth dilution method . Escherichia coli was resistant to all the extracts of Vitellaria paradoxa . Antimicrobial activity was recorded by the methanolic extract of Vitellaria paradoxa with…
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Abstract
Introduction: Leaf extracts of Moringa oleifera (aqueous, diethyl ether, ethanol, and ethyl
acetate) were tested on Echerichia coli, Pseudomonas aeroginosa, Staphylococcus aureus,
Salmonella typhi, Streptococcus pyogenes and Klebsiella aerogenes using agar well diffusion
method.
Methods: Antibiotics (control) used were tetracycline and ciprofloxacin at 250 mg/mL.
Results: Results obtained showed that 200 mg/mL of diethyl ether, ethanol, ethyl acetate
and 100% aqueous extracts had more effect than 160 mg/mL of diethyl ether, ethanol,
ethyl acetate and 80% aqueous respectively. The…
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Abstract
Screening of hydrocarbon degrading microorganisms from oil contaminated soil was studied and the samples were obtained from three Mechanical Workshops in Awka, Anambra State. The microorganisms were isolated using the pour plate method by selective enrichment technique. All samples were cultured in solid media with crude oil as a sole carbon and energy source to isolate hydrocarbon utilizers from the sample collected from different mechanic workshop. The isolate were identified on the basis of their colonial and morphological characteristics.…
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Abstract

the probiotic features and safety of Lactobacillus species from different foods in the advanced countries have been extensively studied.


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Abstract: Yogurt is a commonly consumed drink because of its energy constituent and health benefit. This study
examined the bacteria present in yoghurt sold in Awka, a metropolis South east Nigeria. Undesirable microbes that can
cause spoilage of dairy products include Gram-negative psychrotrophs, coliforms, and lactic acid bacteria.
The bacteriological quality of some yoghurt sold at different outlets in Awka metropolis in Anambra state was assessed.
Five different brands of commercially prepared yoghurt were purchased and analyzed in the laboratory…
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ABSTRACT
Instant noodles have been part of the
cooking culture of the Chinese for 4000
years, and have gained popularity among
college students in most country. This is
probably because of its convenience and
affordability. In this study, bacteria that are
present during spoilage of ready-to-eat
instant noodles were isolated and tentatively
identified with attempts to estimate spoilage
time. A total of thirty packets of instant
noodles, made up of three most popular
brands, were purchased and code labeled
CK,…
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Abstract Five different samples of soybean products (Raw Soybeans Seed (RSS), Local Soybean Powdered Milk (LSPM), Local Soybean Liquid Milk (LSLM), Vita-milk and Chi-soymilk) were used for the analysis of sulphur containing amino acids (methionine and cysteine) contents. Qualitative analysis using thin layer chromatography technique was carried out on the soybean products to detect the presence of sulphur containing amino acids while spectrophotometric method involving methionine and cysteine standards were used to quantitatively estimate the two amino acids in the…
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ABSTRACT
Ripe fruits of Spondias mombin are eaten as mild laxative, diuretic, ice cream, cool beverages, jams, wine, and
also of medicinal and industrial uses world widely. Different concentrations (15, 50, 80 and 100%) of crude
fruit juice of S. mombin and E. coli Serotype 0157:H7 were separately fed to rats for three days. The blood of
rats was taken for haematological analysis, liver and kidney for biochemical assay and histopathological study.
Positive control rats were allowed only to rat…
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Pregnant women attending antenatal clinics are usually screened for
syphilis and Human Immuno-deficiency Virus (HIV), but rarely for
other sexually transmitted infections such as gonorrhea and vaginal
candidiasis in most developing countries. This study aimed at
determining the prevalence of Neisseria gonorrhoeae and Candida
albicans among pregnant women of different age groups and stages of
pregnancy in selected hospitals in Enugu state. High vaginal swab
(HVS) samples were collected from 64 asymptomatic pregnant
women between the ages of 18 -…
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A cost effective, affordable and environmental friendly solar tent dryer was developed for production of stockfish from Whitings fish (Merlangius merlangius) that is stable and free of contamination from air borne dust and insects. The dryer was constructed of locally available materials; basically steel and polythene. It was able to record an average differential temperature of 12 oC when compared with the ambient condition. The tent dried fresh samples of Whitings of 25 kg with average moisture content…
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Microbe producing natural herbicides are alternatives to the chemical herbicidal formulations. The effect of minerals and carbon sources were screened to select the best when combined and when apply singly during submerged fermentation. The effect of their phytotoxic metabolites was tested on Chromolaena odorata and Echinochola crus-galli. It was observed that the best combination between all the mineral was found in the combination containing manganese, zinc, bromine and iron. It gave the highest bio-herbicidal activities on the tested…
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This study was carried out to determined the efficacy of freshly prepared pestal granules containing the wild and mutant strains of Pseudomonas aeruginosa and Lasiodiplodia pseudotheobromae in controlling weeds in a potted experiment. Six multi-combination formulations of the wild and mutant strains of Pseudomonas aeruginosa and Lasiodiplodia pseudotheobromae were combined with a semolina kaolin granular formulation which were represented as follows: BHI, BH2, BH3, BH4, BH5, and BH6. The effect of each formulated pesta granules were supplemented with…
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Local available agro-industrial waste from rice bran was evaluated in the laboratory for use as substrate for mass culturing of Lasiodiplodia pseudotheobromae. Boiling water and Anona senegalensis extracts were added to the substrate under solid state fermentation(SSF). The effects of lengthy exposure to Ultraviolet (UV) radiations (1h
30min,1hours, 30 minutes) on the conidia production were assessed after 14days with 12h photoperiod at 25- 30oC. The laboratory studies showed that rice bran with boiling water in nylon bag inoculated…
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The storage environment can have a drastic impact on the stabilization of bioherbicides .Optimization of shelf life is critically important for biocontrol products containing living microorganisms. The wild and mutant strain of Lasiodiplodia pseudotheobromae and Pseudomonas aeruginosa were formulated in multi-combination into pestal granules with the additions of adjuvants and designated as BH1,BH2,BH3,BH4,BH5 and BH6 . After solid based formulation, formulated bioherbicidal products were conditioned at room temperature (28oC), refrigeration temperature (6°C) and deep freezer temperature (-20oC) for…
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Edible films and coatings are an environmentally-friendly alternative method to extend the postharvest life of fresh and minimally processed fruits and vegetables.Edible coatings based on chitosan (CH),Aloe veragel (AL)and its combination with Aloe veragel (CHAL), were developed and applied to cucumber, in order to improve its quality and shelf life during storage. Weight loss, changes in soluble solids, ascorbic acid content, firmness, pH and the percentage of fungal infection of uncoated and coated samples were determined throughout ambient…
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Two different coatings were developed from Corn Starch (CSME) and Carboxymethylcellulose (CMCME) and their effects were investigated on the quality and storability of orange fruits. The two experimental coatings were: CSME and CMCME both mixed with 75mg/ml of crude extract of Moringa Oleifera. The following parameters were measured: Weight loss, ascorbic acid content and firmness. Four hundred and eighty (480) orange fruits were stored for seven weeks at ambient temperature. The overall result showed that polysaccharides coating from…
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An investigation into the antibacterial properties of aqueous ethanolic extracts of Chromolaena odorata leaves against some pathogenic microorganisms was carried out. The test bacteria used include Staphylococcus aureus, Salmonella typhi, Escherichia coli, Pseudomonas aeruginosa and Streptococcus pyogenes. The ethanol extracts exhibited the highest activities against the test organisms with zones of inhibition ranging from 10 - 15 mm, followed by the aqueous extract with the zone of inhibition ranging from between 4 - 9 mm. The MIC test showed…
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This study evaluates the single and combined usage of chitosan (2% w/v) and rhamnolipid (2% w/v) as edible coatings to extend the shelf life of sweet oranges stored at 25 °C for 8 weeks. Physiochemical, microbial and sensory analysis of the oranges was conducted during ambient storage. The combined treatment of chitosan and rhamnolipid coating on oranges significantly delayed a loss in chlorophyll quality, malondialdehyde, weight loss, soluble solids content, titratable acidity, vitamin C content and delayed the…
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The utilization of bioherbicides in place of chemical herbicides has been described as one of the sustainable eco-friendly technologies that can improve agricultural outputs. This work investigated the impact of different carbon and nitrogen sources on the bioherbicidal efficiency of Lasiodiplodia pseudotheobromae (C1136). The preliminary screening of various carbon and nitrogen sources was carried out, out of which sucrose and peptone were selected for further C:N ratio investigations using strain C1136. The fungus produces a different quantity of…
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Formulation of effective and environmental friendly bioherbicides depends on the type of fermentation medium used for the production of phytotoxic metabolites. The effect of biomass, colony forming unit and the phytotoxic metabolite produced from the biphasic fermentation was carried out, while the phytotoxic metabolite was tested in vivo and in-vitro on Echinochola crus-galli and dicotyledonous Chromolaena odorata. The mutant strain of Lasiodiplodia pseudotheobromae C1136 (Lp90) produced the highest amount of conidia and the largest necrotic area on the…
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An active biosurfactant-producer from an agronomic environment majorly from the rhizosphere of a wheat plant in western Nigeria was utilized for the production of rhamnolipid. The isolated bacteria were selected using different methods such as oil displacement test, emulsification activity, and surface tension respectively. Based on partial sequenced 16S rDNA analysis of isolate, C1501 was identified as Pseudomonas aeruginosa with an accession number KF976394 having 100% similarity to P. aeruginosa LMG 1242T. The results showed that Pseudomonas aeruginosa…
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Nanotechnology has been reported as an additional technology which could help in meeting the global demands for sustainable agriculture and prevention of crop losses. Several scientists have concentrated their efforts on the development of non-target, biodegradable and eco-friendly nano-formulations showing strong biological activities against plant pathogens. This mini review highlights some of the nanomaterial-based agents that have been used in the management of plant pathogens affecting several crops of interest.


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This work was performed in order to determine the effect of crude keratinase enzyme and the immobilized keratinase enzyme on the biodegradation of chicken feather wastes and to evaluate their effect on the growth of tomato plant. Moreover, the effect of variably formulated biofertilizer on soil enzymatic activity and soil carbon and soil respiration when compared to chemical fertilizer using different assay techniques. The order of bio-fertility activity is BCKE > BIKE >positive control. Additionally, the biofertilizer produced…
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The management of solid wastes has been a major concern to many cities of the world due to daily increasing rural-urban migration and globalization. Due to a greater consumption of poultry meat, the disposal of feather wastes has contributed to the daily increasing environmental pollution. Agricultural wastes (such as poultry feathers) are disposed by burning, which consequently constitute environmental pollution and their chemical or mechanical conversion into animal feed normally leads to minimization of amino acids. The application…
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the growth performance and feed utilization of fingerlings of clarias gariepins fed diets containing a commercial feed and ....


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the growth performance and feed utilization of fingerlings of clarias gariepins fed diets containing a commercial feed and ....


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The search for new antimicrobial agents for the management of infections is of increasing interest because of the intense growing resistance of antibiotics to bacteria. Eighteen medicinal plants’ extracts, these plants belonging to different families were fractionated using different solvents with varying polarity (hexane, chloroform and methanol), with historical use against infections in a primary and secondary screening for activity against Candida albican, Aspergillus fumigatus, Crytococcus neoformans, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Vancomycin resistance enterococcus and Methicillin-resistance…
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The African lung fish, Protopterus annectens from Agenebode, in the
Lower River Niger was investigated for aspects of its biology. Samples of the
fish were collected from October 2016 to November 2017. Sex ratio of 1:1.4
(male to females) was obtained from the river. The results from the stomach
analyses revealed that P. annectens consumed mud, detritus and sand
(100%). Bird’s foot was regarded as incident diet (0.01%) while grass was
also observed to be part of the relevant diet…
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The West African Lung Fish are
common to the waters of West Africa. It is the only species in the
genus Protopterus of the family Protopteridae found in the West
African Swamps, studies have shown that the distribution and
abundance of P. annectens are often affected by the construction of
dams causing shift in salinity, flood, a significant rise in pollution.
Investigation into the morphometric characteristics of P.
annectens may provide steps into understanding the phylogeny,
growth pattern and morphometric…
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The food and feeding habits of the Sompat grunt Pomadasys jubelini (Cuvier, 1830) in the New Calabar -
Bonny River, Porthacourt, Rivers state, Nigeria was investigated in other to identify the dietary items and feeding
habits. The analyses of the stomach contents were carried out by the numeric, frequency of occurrence, points and
gravimetric methods. The results showed that the dietary items were crabs - Callinectes amnicola (73.1%), fresh
water shrimps - Macrobrachium macrobrachion (24.08%) which were the important primary…
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The mouth, teeth and intestinal tract of 20 out of 413 specimens of Pomadasys jubelini obtained from the New Calabar-Bonny River were examined macroscopically, microscopically and histologically; features of biological interest were captured photo-microscopically. The terminal mouth possessed by Pomadasys jubelini opens up to 20% of its total body length. The mouth has multiserial bands of setiform teeth; the pharyngeal teeth on the roof and floor surfaces of the


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This studies was carried out to isolate, identify and establish the pathogenicity of fungi associated with post-harvest rot diseases of onion bulb, a crop which is highly perishable and seasonal in Nigeria, and to determine the effect of various concentrations of crude extracts from the stem and leaves of Moriga olifera in vitro on the causative agents . Fungi associated with onion bulb rots were isolated on Potato Dextrose Agar medium and their pathogenicity was established by testing…
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Aspects of the reproductive biology of which included the sex ratio, gonado-somatic index, stages of gonadal development and fecundity of the grunt, Pomadasys jubelini in the New Calabar-bonny River were investigated. Pomadasys jubelini had a sex ratio of 1: 2.1 (male to female). Gonado-Somatic Index ranged from 1.33 to 4.41% (2.89±0.03%). High gonado-somatic indices were recorded from September to October. Two stages of gonad maturation, maturing and mature were observed for male fish while the stages of quiescent, maturing and…
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The physico-chemical characters of the New Calabar-Bonny River were investigated for two years to
determine its water quality for aquaculture production and human domestic uses. Three stations were chosen to
check for the variations in the selected waters parameters. pH, Temperature, salinity, Dissolved oxygen, Alkalinity,
Conductivity and Turbidity were analysed monthly from June 2011 to May 2013 using standard method s and
procedures. The ranges obtained were found to be comparable to other Nigerian and African Reservoirs. Mean
values obtained…
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The sex ratio, gonadosomatic index, stages of gonadal development and fecundity of the grunt,
Pomadasys jubelini in the new Calabar-bonny River were investigated. P. jubelini had a sex ratio of 1: 2.1
(male to female). Gonadosomatic index ranged from 0.33 to 7.29% with a mean of 2.89±0.08%. High
gonadosomatic indices were recorded from September to October, which suggested the spawning period
of the fish. Two stages, maturing and mature were observed for male fish while quiescent, maturing and
mature were…
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The morphometric parameters of Pomadasys jubelini were studied using 413 specimens from June 2011
to May 2013 using different fishing gears. The length of fish ranged from 9.60 – 55.3cm (TL). Positive allometric
growth (J>1) was obtained for the length - girth relationship with growth rate values J = 1.21 and 2.28 for males and
females respectively.....


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The mineral content, nutritive value and anti-nutritional factors in boiled seeds of Bauhinia
monandra collected from the main campus of Ahmadu Bello University, Zaria, Nigeria were
evaluated. Mineral content analysis revealed concentrations.........


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This investigation was aimed at ascertaining the effects of pH, effect of temperature and effect of sodium acetate concentration on crystal violet decolouration by immobilized and free cells of Pseudomonas aeruginosa in a nutrient. The immobilized cells were immobilized sodium alginate solution, agarose and agar in a shaking flask at a speed of 120 revolution/second. Although four dyes were initial selected for the preliminary stage of the study, detailed investigation was carried out using the crystal violet. Prior…
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413 samples of Pomadasys jubelini were obtained from the New Calabar-Bonny River and examined
over a period of twenty four months. The length ranged from 8.50cm - 47.60 and the weight from 17.00g - 2320g.
Females were longer and heavier than males....


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Nutrient enrichment of aquatic ecosystem can lead to increase in algae and aquatic plants and the loss of component species and ecosystem function. The aim of this study was to investigate the relationship of temperature and pH to nutrient uptake from nutrient media by immobilized cells of Pseudomonas aeruginosa. The study, which was carried out under shaking flask conditions used sodium alginate, agar-agar and agarose immobilized. The incubation temperatures used for the study were 25°C, 35°C and 45°C…
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background

Methicillin-resistant Staphyloccus aureus constitutes part of the growing health problem associated with chemotherapy because they are more difficult to treat and could transfer drug resistance to other bacteria.


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Abstract
This study was aimed at determining the level of Listeria contaminants and subsequently
detects some resistance genes among the isolated Listeria species from lettuce sold in some
vegetable markets in Benin City, Nigeria. Twenty-four lettuce samples were purchased from
three vegetable markets in Benin City, Nigeria and examined using standard microbiological
methods. Microbial characterization revealed Listeria monocytogenes and L. grayi as the
predominant species isolated. Plate count analysis on Listeria selective agar revealed that
lettuce sold in Oba market…
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Methods The wastes were air-dried for 72 h. The inoculum was developed by transferring loopful of inoculum into the prepared inoculum medium. Incubation was carried out at 37 ± 1 °C. 144 1-day-old chicks were used. The trial lasted for 21 days. The chicks were grouped into 4, each containing 36 1-day-old chicks. The animals were provided with fresh feed and water ad libitum. Feed intake and body weight were measured weekly, while the calculation of feed conversion…
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This study evaluates the single and combined usage of chitosan (2% w/v) and rhamnolipid (2% w/v) as edible coatings to extend the shelf life of sweet oranges stored at 25 °C for 8 weeks. Physiochemical, microbial and sensory analysis of the oranges was conducted during ambient storage. The combined treatment of chitosan and rhamnolipid coating on oranges significantly delayed a loss in chlorophyll quality, malondialdehyde, weight loss, soluble solids content, titratable acidity, vitamin C content and delayed the…
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Microbe producing natural herbicides are alternatives to the chemical herbicidal formulations. The effect of minerals and carbon sources were screened to select the best when combined and when apply singly during submerged fermentation. The effect of their phytotoxic metabolites was tested on Chromolaena odorata and Echinochola crus-galli. It was observed that the best combination between all the mineral was found in the combination containing manganese, zinc, bromine and iron. It gave the highest bio-herbicidal activities on the tested…
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The antibacterial activities and preliminary phytochemical screening of ethanolic and aqeous extract of Vernonia amygdalina was performed against clinical isolates obtained from University of Ilorin Teaching Hospital (UITH) which included Escherichia coil, Staphylococcus aureus and Pseudomonas aeruginosa. Generally, the ethanol extracts showed more activities than aqueous extracts in both samples. The extracts exhibited antibacterial activity against the test organisms (0.5 to 15.50 mm). The
phytochemical screening of Vernonia amydalina showed the presence of tannins, cardiac glycosides, saponins and…
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Extension of the shelf life of orange fruits continues to be a challenge in Nigeria. The search for safe, healthy and environmental friendly treatments has led to increased interest in research into edible and biodegradable films and coatings. In this work, the use of Aloe vera gel as a coating to extend the shelf-life of orange fruits was investigated. The oranges were stored at ambient temperature (27+2oC) and at 50-60% relative humidity for five weeks. During ambient storage,…
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Two different coatings were developed from the mucilage of Cactus and their effects were investigated on the quality and storability of mango fruits. The two experimental coatings were: Pure mucilage extracts (ME) and Mucilage extract mixed with 5ml glycerol (MEG) which served as plasticizer. The following parameters were measured : Weight loss, ascorbic acid content, pH, firmness and microbial qualities. Four hundred and eighty (480) mango fruits of “Ogbomosho” variety were stored for seven weeks at an average…
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cefotaximase genes of Beta Lactamase have been responsible for community acquired infections such as urinary tract infections...


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ABSTRACT
Background: Antimicrobial resistance among Candida species is an intense public health concern. The aim of the study was to
determine the antifungal susceptibility pattern and test for cure of Candida species among women of child bearing age who
visited the General Hospital Onitsha, Nigeria with symptoms suggestive of Vulvovaginal Candidiasis (VVC).
Materials and Methods: Eight hundred and seventy six female patients participated in the study of which high vaginal swabs
were collected and evaluated mycological by standard microbiological methods:…
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ABSTRACT
Garcinia kola seeds and leaves were screened for their anti bacterial
activities using 1% hydrochloric acid, diethylether, acetic acid (ethanoic
acid) and acetone. The seeds and leaves were dried and ground into
powdered form. 10g of the ground seeds and leaves were in four sets. 90ml
of the extraction solvents was added to each set. The seed and leaf extracts
were tested on clinical isolates of Staphylococcus aureus, Escherichia coli,
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Abstract:
Background: Carbapenems are a class of ? lactam antibiotics with broad antibacterial activity. However, the increasing use of the drug class has resulted in varied susceptibility pattern of Pseudomonas aeruginosa thus limiting treatment options. Aims: The study was done to determine the carbapenem susceptibility pattern and to detect novel class 1 integron of the metallo-beta-lactamase genes among Pseudomonas aeruginosa isolates from clinical specimens in South Eastern Nigeria. Settings and Duration of Study: The study was carried out in South…
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ABSTRACT
Aims: The study was carried out in order to determine the plasmid profile, antibiotic
susceptibility pattern and the type of antimicrobial resistance (whether it is chromosomal
or plasmid mediated) among producers of extended spectrum beta-lactamases of
uropathogens in children.
Study Design: A cross-sectional study of three hundred children in a hospital.
Place and Duration of Study: Department of Pediatrics (Pediatrics Ward) and
Department of Medical Microbiology and Parasitology, Nnamdi Azikiwe University
Teaching Hospital, Nigeria between January 2009 to September…
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The use of conventional food packaging materials is usually effective in terms of barrier. On the other hand, their non?biodegradability creates serious environmental problems, motivating researches on edible biopolymer films and coatings to at least partially replace synthetic polymers as food packaging materials. Chitosan is a biopolymer obtained by N?deacetylation of chitin, which is the second most abundant polysaccharide on nature after cellulose. Chitosan forms clean, tough and flexible films with good oxygen barrier, which may be employed…
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Abstract- Extended-spectrum ?-lactamases (ES?Ls) are a rapidly evolving group of ?-lactamases which share the ability to hydrolyze thirdgeneration
cephalosporins and aztreonam yet are inhibited by clavulanic acid. In this study, the aim was to determine the susceptibility of
ES?L producing clinical isolates of Escherichia coli across various antimicrobial agents according to the Clinical Laboratory Standard Institute
(CLSI) new breakpoints. Sixty five clinical isolates of Escherichia coli were collected from a Tertiary Hospital in Nigeria of which forty six ES?L
-producing…
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Four different coatings were developed from the mucilage of Cactus and their effectswere investigated on thequality and storability of carrot fruits. The four experimental coatings were: Pure mucilage extracts (ME), Mucilage extract mixed with 5ml glycerol (MEG), Mucilage extract mixed 5ml soy oil ( MESO), Mucilage extract mixedwith 5ml olive oil (MEOO) theadditionof oil served as plasticizer. The following parameters were measured: weight loss, ascorbic acid content, pH, firmness and microbial qualities. Four hundred and eighty (480) carrots…
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The effects of Moringa oleifera leaf meal and raw and cooked seed meal as a replacement for synthetic antibiotic (tetracycline) on carcass characteristics, heart and liver histology of broiler chickens were assessed in a 7-week feeding trial. The design of the study was a completely randomised design. There were 5 treatments: negative
control (D1), positive control (D2), treatments 3, 4 and 5 (D3, D4 and D5) contained 0.25 g/kg of feed of raw air-dried Moringa oleifera leaf meal,…
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This study examined the effect of rinses on the microbial safety of whole egg and its components, commonly consumed in the Ilorin west area, to unrinsed eggs. The microorganisms isolated during this study include: Serratia spp., Providencia spp., Citrobacter spp., E. coli, Enterobacter spp., Klebsiella spp., while the fungus includes Cladosporium spp., Aspergillus fumigatus, A. niger, A. flavus, Penicillium spp. and Mucor spp. From this study the rinsed eggs have the lowest amount of microbial load at 0.6…
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The use of phytopathogenic fungi in biological control of weeds may represent a promising alternative to the use of chemicals and may lead to the sustainability of agro-ecosystems. In the current study, strain C1136 was developed into various formulations and their activities were compared with a chemical herbicides using glyphosate in a screen house, applying standard procedure. All the bioherbicide treatments gave significantly higher yield component on the following parameters: tasselling, number of cobs, day of silking, number…
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The wild and mutant strain of Pleurotus sajor caju was cultured on different agricultural substrates. Treatment 1 contained agricultural substrates alone. Treatment 2 contained the mutant strain of the mushroom plus agricultural waste. Treatment 3 contained the wild strain of the mushroom plus agricultural waste. The mutant strain of Pleurotus sajor caju cultured on groundnut shell had the highest iron content while the mutant strain cultured on palm kernel meal had the highest biomass production, 10.5 g/L and…
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The increase in papaya production requires new strategies to extend the storage life of the fruit. Edible coatings act as physical barriers when applied on the surface of fruits and effectively change their internal atmosphere and delay the ripening process. In the present study, two different coatings were developed from the mucilage of Opuntia cactus and their effects were investigated on the quality and storability of papaya fruits. The two experimental coatings were pure mucilage extracts (ME) and…
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The success of applying bioherbicidal agents as biological control agents of weeds relies on the ability of the biological control agents to persist after its application and to remain viable after exposure to different environmental conditions. This research work was carried out to determine the persistence of bioherbicide formulated from multi-combination of the wild and mutant strain of Lasiodiplodia pseudotheobromae and Pseudomonas aeruginosa under field condition as well as soil carbon sequestration and soil functionality through the measurement…
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This study was carried out to optimize and enhance the production of phytotoxic metabolites from Lasiodiplodia pseudotheobromae (C1136) for its herbicidal properties using solid-state fermentation with various agricultural wastes available in Nigeria. The results obtained showed that banana peel (10.12 ± 0.10 g/100 g) and wheat bran (9.89 ± 0.11 g/100 g) had the highest protein content. Banana peel was observed to have the highest value of phosphorus (0.30 ± 0.05 g/100 g), closely followed by wheat bran…
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Fresh, live catfish (Clarias gariepinus) were obtained from Private pond in NIFFR, New-Bussa. The samples were divided into five groups. Four groups were dressed and dipped in a solution of 2.5%, 5%, 7.5% and 10% of Ginger respectively for thirty (30) minutes and smoked dried. The fifth group acts as control. They were examined microbiologically, chemically and organoleptically. The Ginger reduced the free fatty acid (FFA) values, trimethylamine (TMA) values, and the fungi load of the processed fish.…
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Edible coating has been used for preserving the quality and safety of fresh fruit and vegetables. The ability of polysaccharide-based (carboxy methyl cellulose and corn starch) coatings to extend the shelf life and quality of cucumber fruit during storage at ambient temperature of 25-28oC and relative humidity of 83-95% was investigated . The results indicated that coated cucumber showed a significant delay in weight loss, firmness, pH, total soluble solids, ascorbic acid and total microbial
counts compared to uncoated ones.…
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Pineapple (Ananas comosus (L.) Merr.) is an important fruit crop grown in Nigeria. Extension of the shelf life of pineapple fruits continues to be a challenge in Nigeria. The search for safe, healthy and environmental friendly treatments has led to increased interest in research into edible and biodegradable films and coatings. The aim of this study was to evaluate the effect of Aloe vera gel as an edible coating on weight loss, ascorbic acid, pH and firmness in order to…
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This study was carried out to investigate the levels of aflatoxins in some agricultural commodities sold at Baboko market in Ilorin. The agricultural commodities were grains, root and tuber products, onions, cray-fish and stock-fish. Aflatoxin B1 (AFB1) in grains ranged between 2.57±0.61 in wheat and 21.72±2.92 ppb in sorghum, while AFB2 ranged between 0.46±0.23 and 6.66±2.11 ppb in all the samples investigated. Varying levels of AFB2, AFG1 and AFG2 were detected in grain samples. AFB1concentrations in root and tuber were:…
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Edible coatings based on hydroxypropylmethyl-cellulose(HPMC) with and without an aqueous extract of Moringa leaves, were developed and applied to orange, in order to improve quality and shelf life during storage, while taking advantage of the beneficial health properties of Moringa. Weight loss, firmness and ascorbic acid content of uncoated and coated samples were determined throughout ambient storage. The two experimental coatings were: HPMC without crude extract of Moringa oleifera and HPMCME mixed with 75mg/ml of crude extract of Moringa oleifera…
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Two different coatings were developed from the mucilage of Cactus and their effects were investigated on the microbial qualities of mango fruits. The two experimental coatings were: Pure mucilage extracts (ME) and Mucilage extract mixed with 5ml glycerol (MEG) which served as plasticizer. Samples of the mangoes were immersed into these coatings and they were stored for seven weeks at an average temperature of 27±2°C and relative humidity55-60% under Evaporative Coolant System(ECS) . The Cactus mucilage treatment of mangoes significantly…
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This study was carried out to assess the microbial quality and safety of smoked catfish (Clarias gariepinus) treated with Sodium chloride (table salt) during 8-week storage at room temperature. Raw catfish steaks were subjected to the following treatments for 5 minutes prior to smoking: 5-25% table salt. The non-treated catfish served as control. The control and the fresh fish treated samples showed diverse microbial load. All treated smoked sample were negative for E. coli and Streptococcus sp. The treatment effectively…
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Xanthan gum is an extracellular hetero polysaccharide produced by Xanthomonas campestris Pammel, 1895, a bacteria species that causes a variety of plant diseases. Due to its unique rheological behavior, xanthan gum is one of the major microbial polysaccharides employed in many industrial processes. The increase in Carica papaya L. fruit production requires new strategies to extend their storage life. Edible coatings when applied on the surface of fruits act as physical barriers which effectively change their internal atmosphere and delay…
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The purpose of this study was to identify appropriate samples and culture techniques on the isolation of thermophiles from automobile radiators. Water samples from these artificial environments were used for the isolation of thermophilic bacteria at 60°C and pH 7.65. Samples from Honda, Jetta and Passat (automobile vehicles) were screened for the growth of thermophilic organisms using nutrient broth medium and their turbidity were measured using spectrophotometer at 600nm. Results of this study suggest that optimal isolation rates of thermophiles…
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Objective: To evaluated the antioxidant and protective effect of Thaumatococcus daniellii (T. daniellii) on rat feed on potassium bromate (KBrO3) toxicity in male rat testes.
Methods: Thirty male albino rats of average weight 140 ± 5 g were randomly grouped into 5 with six rats per group. The rats in group A (positive control) and test groups (C, D and E) were orally given 0.5 mL of 10 mg/kg body weight of KBrO3 daily. The animals in the negative control…
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Fermented foods have good nutritional and health benefits, and are produced via solidstate fermentation (SSF) technology. This study was carried out to produce a feed variety;mycomeat through the solid state fermentation using various agricultural by products forlivestock feeding. Pleurotus sajor caju was cultured on different agricultural substrates at 27 ± 2?C. The mutant strain was produced using random mutagenesis by exposing the wildstrain to ultra violet radiation for 30 min. The moisture content of the different agriculturalby products was maintained…
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Abstract
Diabetes is a global health issue as it is a metabolic disease that affects individuals
of all ages. The success of long term maintenance therapy for diabetes mellitus
depends largely upon the patient’s compliance with a therapeutic plan. This study
investigated the factors affecting level of compliance with treatment regimen
among clients with diabetes mellitus in selected hospital in Benin City, Edo state. A
descriptive cross sectional design was in a total of three hundred and six (306)
diabetic…
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ABSTRACT
Hypertension is a global public health issue as it is the most common cardiovascular disease
worldwide. Being one the few diseases that come with complications, this study investigated the
level of compliance of hypertensive patients with treatment regimens among such patients
attending outpatient departments of selected tertiary hospitals in Benin City, Edo State, Nigeria.
A cross-sectional descriptive research design was used. A sample size of 309 was selected
from a total population of 946. A convenient sampling technique and…
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Abstract
Hydrocarbon utilizing bacteria in water, soil and sediment samples collected from crude oil-impacted sites at Bodo community, Ogoniland in the Niger Delta were
isolated using Bushnell-Haas agar. Bacterial genera tentatively characterized were
Bacillus, Corynebacterium, Enterobacter, Flavobacterium, Klebsiella, Micrococcus,
Proteus, Pseudomonas and Serratia. A portion of the 16S ribosomal ribonucleic acid
(16S rRNA) gene of the genomic DNA extracted from each bacterial isolate was
amplified with polymerase chain reaction (PCR) using the universal primer set 27F:
GAGTTTGATCCTGGCTCAG and 1492R: GGTTACCTTGTTACGACT.…
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Abstract

This investigation was carried out to characterize microbial communities in selected crude oil polluted
sites in Bodo community, Gokana Local Government Area of Rivers State, Nigeria. Total heterotrophic
bacterial counts ranged from 0.7 to 1.37x107 cfu/g and 0.2 to 5.9x106 cfu/ml while counts of hydrocarbon
utilizing bacteria ranged from 0.1 to 8.0 x 106 and 0.2 to 7.5 x 105 cfu/ml for soil, sediment and water,
respectively. Physiochemical parameters of all samples were determined. The ranges obtained were
temperature…
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Abstract
The reduction in the total petroleum hydrocarbon (TPH) content of a polluted soil is not indicative of
reduction in toxicity and soil recovery. However, it is expedient to design methods that will not only
remediate the soil but restore it to support agricultural and biological activities. This study involved
a bench-scale bioremediation experiment conducted to compare two treatment regimens, NPK and a
combined NPK and cow dung (NPK + CD) to enhance petroleum hydrocarbon degradation and ecorestoration.
The treatment…
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Abstract 

with the increased soil pollution caused by heavy metals, identifying accessions that are high nitrogen assimilators has a potential in improving soil fertility crop yield. Therefore, the current study aimed at determining the variation in nitrogen assimilation and biomass accumulation of cowpea accessions to cadmium pollution.


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Study Background: Moringa oleifera, (miracle tree), has been used in the treatment of numerous diseases. Moringa has been
the subject of intensive scientific research; however, there have been scanty information
on its sub-acute effect on the kidneys.
Aims: This work was done to investigate the histological and biochemical effect of M. oleifera on the heart
and kidneys of adult Wistar rats.
Settings and Design: Twenty-eight adult healthy rats were used for this study. The rats were divided into
4 groups…
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The possibility and economic implication of the.commercialization of zinc

oxide varistors developed using locally available matenals n Nigeria is presented in this work. The study revealed that Nigeria has 4.63 metnc tons reserve of Zmc which is the major constituents of zinc oxide varistors. The successful commercialization of these functional, protective semiconductor devices would create employment opportunity, income and wealth. The financial analysis revealed that the investment is a profitable venture with a profit. Ratio of 61.34% and a high…
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In this paper . the cumulative score control schemes are designed to detect a shift in the NEPA Transformers mean loading rate in Nigeria. The designed schemes are used on data obtained from NEPA 's National Control Center (NCC), Oshogbo for the period of six months, January - June, 2001. The result shows that the method has a good potential as remedy to preventing faults


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The comparalive analysis of the inverse parallel connected thyristor-thyristor and thyristors-diode power controller configura1ions are presented in this paper.

The controlled variations of the r.m.s value of  the  alternating  voltage applied to a load via power controller scheme were examined . Analyses of the first fundamental component of the Fourier series of the load current were presented. The normalized value of the load current (ILnorm)  at  various firing angle (?) varying from 0 to 180° were obtained and plotted for…
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Using the principles of thermodynamics for analogical purposes, this article seeks to answer the following question: What can the principles of thermodynamics reveal about the effects of crossbordermigration and Boko Haram crisis on security challenges in Africa? The increase in the intensity of terrorist attacks by Boko Haram and the responses of government security forces to curb the situation in Nigeria has resulted in internal displacement of people and themovement of affected people in Northern Nigeria to…
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Human rights violations and violent conflicts in the Niger Delta of Nigeria have elicited interest from scholars and international agencies. Although studies provide significant insights into the conflicts in the Niger Delta, the issue of transitional justice has not been adequately considered. This article examines human rights violations and transitional justice in the Niger Delta. It begins with the conceptualization of human rights violations and transitional justice. It then offers a historical contextualization of oil production in Nigeria…
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Nigeria, a major petroleum producer and exporter, suffers from lack of refining capabilities, sometimes creating supply shortages. To satisfy demand, petroleum products must be imported from other countries. The situation is dire in areas of the Niger Delta. This has contributed to the development of artisanal refining of petroleum—a
homegrown solution. Several studies have considered various aspects of this locally innovative strategy, often focusing on its environmental problems. Little attention has been given to how local refining can…
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Increasing inequality in Nigeria has been of growing interest to scholars, international political observers, and the Nigerian public since the creation of the country in 1914 by the British colonial masters. The focus of this article is on the extent to which the practice of democracy in Nigeria’s Fourth Republic has contributed to the reduction of inequality. The article begins with the dimensions of inequality in Nigeria. The study shows that democratic governance has not adequately bridged the…
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The article examines how the management of Nigeria’s public health care system reinforces poverty in the Niger Delta region. In recent times medical doctors have frequently embarked on strike as a strategy for compelling the government to improve the health care system. During periods of strikes patients are left without medical attention. Since a majority of the people are poor, they find it difficult to afford medical care in private hospitals. The inability to get proper health care…
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This paper examines the role of governance in environmental inequality in the Niger Delta. Fair access to environmental resources could help to guarantee human security and mitigate violence. Root causes of environmental inequality in Nigeria’s Niger Delta can be linked to government policies and laws such as the Land Use Act and the negative impacts of the activities of multinational oil corporations. Environmental inequality and its concomitant effects produce a trend to conflict in the Niger Delta.


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This article examines the current debate on the social protection paradigm as a strategy for development. Many scholars view social protection as useful for achieving development while some disagree, advocating the transformative social policy approach. It also identifies the implication of the contributions of these scholars to social
policy in Nigeria. This article argues that attacking poverty and vulnerabilities in Nigeria requires the integration of social protection with other social policies, entrenchment of good governance, diversifying the economy,…
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The study tests the moderating effect of monitoring on the corporate tax avoidance- shareholders’ returns nexus in quoted Nigerian firms. Using an ex-post facto design, annual financial data were collected from 54 non-financial firms from various sectors of the Nigerian Stock Exchange (NSE). Analyses were carried out involving the Ordinary Least Square (OLS) regression within the framework of E-view 9.0. The study demonstrates that corporate tax avoidance positively impacts shareholders returns in quoted non-financial firms in Nigeria and…
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The study investigates the perception of some environmentalists, accountants in practice, tax practitioners, academics in the fields of environment, tax and accounting, as well as other respondents, with a view to finding out their take on the introduction and practicability of environmental taxes in Nigeria and ascertaining whether there are significant differences in their mean responses both between and within the various categories of respondents. Using a cross sectional survey research design, data were elicited from the responses…
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The study examines the nature and effectiveness of external debt management in Nigeria, with emphases on how external debt and external debt servicing affect the economy. There is robust empirical evidence on the relationship between external debt and Economic growth in other countries while scanty evidences exist in Nigeria, hence this study is carried out to compliment prior Nigerian studies, using some different variables. Annual data having time series properties on external debt, external debt service, external reserve,…
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The study examines the impact of bankruptcy threats on the likelihood of earnings manipulation in Nigerian listed banks. There is robust empirical evidence on the relationship between bankruptcy threat and earnings management in other countries while scanty evidence exists in Nigeria, hence this study was carried out in order to see if such results obtainable in other countries may hold in Nigeria. Using Altman Z-score and Beneish M-score, the expost-facto research design within a panel framework was employed…
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This paper examine on the activities/ policies of Nigeria and her environment with respect to social equity and how it has affected the development of the nation. The paper will attempt to define social concept and to critically examine whether social equity has a positive impact on the implementation of federal policy on equal employment opportunity in federal agencies. Discrimination in the society can give rise to poverty if it not reduced in the society. Business organization should…
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The need to fast charge a battery, that discharges rapidly cannot be overemphasized, hence a mains operated fast charger for 12volts and 24volts batteries was presented. It consists of a 1kVA, single phase and 50Hz step down transformer. A SKB60/08 bridge rectifier having a current rating of 60A and a 30, 000?f electrolytic capacitor having a working voltage of 100 volts was used for filtering. A rheostat was provided to manually regulate the charging current to prevent over charging, which…
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This paper presents the design and construction of a split, direct current (D.C) power supply unit for a 1000W audio power amplifier. Open circuit test of the transformer was conducted and the power factor was determined to be 0.795, while the efficiency was found to be 92% at short circuit test. The percentage voltage regulation was 93.41%. The transformer was operated at 90% of its maximum load rating. This split D.C power supply unit was regulated at ±65V. When…
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The design and construction of a 5kVA D.C electric arc welding machine using locally available tools and materials is presented. The D.C electric arc welding machine had a step down transformer and rectifier unit. On testing, it shows an efficiency of 97%, voltage regulation of 86% and power factor of 0.795. The cost of the locally fabricated D.C electric arc welding machine was N40, 525.00 as compared to N60, 000.00 for the imported machine of similar capacity.

 

 


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The design and construction of a 5KVA electric-arc welding machine for welding ferrous and non-ferrous metals using locally available tools and materials is presented. The welding transformer on testing showed efficiency of 97%, a voltage regulation of 86% and a power factor of 0.8. The dual purpose electric welding machine combined the advantages of both the AC and DC Electric arc welding machine in one unit. This design costs N43,525.00 as compared to about N110,000.00 which is the total…
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This paper presents a multipurpose 1kVA D.C power supply unit with adjustable voltage. This was achieved through the design and construction of a core type, 220 volts power transformer, which was stepped down to the appropriate voltage levels of 15volts, 30 volts and 60 volts respectively. The secondary voltage was rectified using diode rectifier connected in bridge mode. This machine was cheaper when compared with the imported one of the same capacity. The D.C power supply had wide application in…
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 A 5KVA, 220 50V, 50Hz, single phase center – tapped transformer which can serve industrially for electric arc welding and electric furnace was constructed. The design analysis of the core type transformer was constructed from 100% locally available tools and materials. The transformer consisted of the core, windings, former, insulation, clamping devices and tank. Test conducted on the transformer showed that an efficiency of 92% power factor of 0.795 and voltage regulation of 86% was achieved.


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In Sapele undertaking , Sapele town and Amukpe had the highest number of outages, which correspond to 550 and 546 respectively out of total 1748 outages for the seven years of studies. The unavailability of these feeders was due to both symmetrical and asymmetrical fault conditions. This study revealed that Sapele installation had been in existence for over four decades, hence, there is urgent need for upgrading and replacement of obsolete equipment. The study also showed that planned maintenance…
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The reliability of electrical power supply of NEPA in Sapele, for a period of seven years (January 1996 – December 2002) was investigated. The reliability parameters was assessed using both the quantitative and qualitative analysis. Enerhen – Agbarho 33KV feeder had the highest availability of 94.31% while Sapele town and Amukpe 6.6KV had the least availability of 85.99% and 86.03% respectively which were for below the international standard of 100%. The study revealed that most of the outages faults were…
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This study addressed the power supply situation in the 11KV feeders in Ekpoma distribution area of NEPA from January 1998 to December 2001. The study clearly shows that the Ekpoma 11KV distribution area network had 98.46% availability as against the international standard of 100%. The 11KV Irrua feeder had the lowest availability of 98.05% while the 11KV Iruekpen feeder had the highest availability of 98.79%. The 11KV Express feeder had the least number of outages of 217 representing 29.93% for…
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The reliability parameters for electric power supply to Ambrose Alli University, Ekpoma, fed from the 11KV feeders in a rural distribution Network of N.E.P.A was evaluated. The availability was assessed to be in the neighbourhood of 98% on the average for the five years period (January 1998 – December 2002) under study. The 2% unavailability was very significant, hence effort should be geared towards attaining the 100% international standard of availability. The System Average Interruption Duration Index (SAIDI) for the…
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The paper presented the different classes of amplifiers as A, B, AB and C with D at the head of the class. Class D amplifiers are distinguished from all others because their power transistors are always operated either fully on or fully off. Moreso, they possess performance superiority over other audio amplifiers and work with low level analogue signals. Frequency response is another prime performance issue for class D amplifiers and suffer from the effect of power supply modulation. The…
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ABSTRACT: In this study the annual rainfall data of forty years (1978-2017) for South-South, Nigeria was collected
from the archive of NiMet. Three methods were used for the analysis; statistical differences between two the equal-length
time scales, coefficient of variability and the anomaly approach. The trend analysis using t-test, Sen’s estimator slope and
Mann Kendall were also carried out in order to determine the trend in the rainfall variables. The results show that the
differences between the two means of…
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Abstract
For over three decades there has been a growing understanding of the effects of electric and magnetic fields along High voltage Transmission Power lines (HVTPLs). These fields are higher close to the HVTPLs and fall with distance. Magnetic fields vary as the load on the HVTPLs changes whereas electric fields stay roughly constant. HVTPLs generate large values of Extremely Low frequency (ELF) Electromagnetic Fields (EMFs).
This research gives an analysis of EMFs emitted by 330kv HVTPLs in Evbotubu Area…
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Abstract In this study, the atomistix toolkit-density functional theory has been used to investigate the structural and electronic properties of zinc-blende aluminum arsenide(AlAs), indium arsenide (InAs) semiconductors and aluminum indium arsenide (AlxIn1-xAs) alloy. The generalized gradient approximation (gga) has been used to obtain the lattice parameters which are compared with both theory and experimental results. To calculate the electronic band gaps,we employed the TB09LDA meta-generalized gradient approximation (mgga), and obtained new band gaps for aluminum compositions 0.0625, 0.125, 0.1875, 0.3125,…
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ABSTRACT
Due to increase in energy cost of transmission, high voltage transmission becomes the most
economical for the transfer of large amounts of electrical power, because the higher the
transmission voltage, the more efficient and cheaper the transmission. Due to increase in
population, the towns are expanding, and naturally result in the construction of buildings near high
voltage power lines. This research gives an in depth analysis of fields emitted by 11 kV and 33 kV
power line and also…
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ABSTRACT
Getting the latest weather parameters and taking the necessary precautions about the recent
climate induced environmental disasters have become a major course of concern in this era of
global warming. In this research a cost effective weather monitoring device was constructed using
an Arduino Mega 2560 microcontroller and some contemporary suitable sensors with a real time
data logger and LCD. The constructed weather monitoring system is beneficial in terms of its ondevice
display, smaller size, cost effective, flexibility and…
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ABSTRACT
One of the major problems in Wideband Code Division Multiple Access (WCDMA) Radio Access
Network (RAN) is interference; which reduces the signal quality of a cellular network system. Most
cellular network service providers use either frequency planning or code planning techniques to
analyze the interference and assign frequencies and codes based on measurement reports from
network statistics.
This research presents a bright analysis of one of the main method for reducing interference in
WCDMA technology using some Key Performance…
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Abstract

this paper reports the effect of the re-ageing(RA) step of a novel thermomechanical ageing treament (TMT) in order to ascertain the mechanical...


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a b s t r a c t
The surface refractivity, the refractivity gradient and effective earth radius factor (k-factor) are useful
ingredients for predicting the local radio wave propagation conditions in the troposphere. In this study
the surface refractivity, refractivity gradient and k-factor were estimated and analyzed from the measurements
of air temperature, relative humidity and atmospheric pressure in Auchi area of Edo State, Nigeria
which is located within Latitude 7.07N and Longitude 6.27E using a set of three…
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Abstract
The study of the variability in temperature is now of great concern not only because of its influence on global warming; which is now a universal threat to humans and its atmospheric environment but also its cruel effects on agricultural activities. In this study temperature variable of four decades (1978-2017) for Auchi, Edo State, Nigeria was collected from the archive of the Nigerian Meteorological Agency (NiMet) so as to ascertain the temperature variability. The three methods that were used…
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ABSTRACT
Interference reduces the signal quality of any cellular network system and is a major problem in
Radio Access Network that need to be addressed because its causes degradation of the signal
quality thereby reducing the quality of service of the particular network service provider. Hence,
interference must be controlled and managed in other to improve the quality of signal in the cellular
network system. This research presents a method of interference reduction by canceling
interference by regenerated signals from…
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There have been a lot of scientific discords on the effects of electromagnetic fields along electric
power lines for close to four decades now. These fields are concentrated close to the power lines
and fall with distance. The magnetic fields vary as the load on the power lines changes while the
electric fields remain approximately constant. Electric power lines produce large amount of
extremely low frequency electromagnetic fields. This research gives an analysis of electromagnetic
fields emitted by 330 kV…
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ABSTRACT: The influence of weather in all aspects of human endeavours is evident in the recorded loss of lives
and properties due to weather related disasters usually triggered by global climate changes. Hence, the need for the
collation of information about the temporal dynamics of weather changes is of paramount interest. This research was
aimed at determining the relationship between relative humidity and the dew point temperature in Benin City, Edo
State, Nigeria. The dew point temperature was approximated from…
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ABSTRACT
Indoor cellular network signal outages and poor reception occur in some indoor locations, as a result of building penetration loss; which accounts for increased attenuation of received signal strength of a cellular network signal when a mobile is moved from outdoor to indoor. Penetration loss is influenced by the type of building materials used in building construction and the building structure/orientation. In this study, the effect of building materials and structures on cellular network signal strength was investigated. A…
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Abstract
The electronic and structural properties of group III-V zinc blende AlAs, GaAs semiconductors and their alloy AlxGa1-xAs were
studied theoretically. The virtual crystal approximation (VCA) has been used in conjunction with both the meta-generalized
gradient approximation (MGGA) and the generalized gradient approximation (GGA) in the atomistix toolkit-density functional
theory (ATK-DFT) implemented in virtual nanolab 2016.2 to investigate the effect of increasing the concentration of
aluminum (Al) on the lattice constant and band gaps. The results obtained are quite good…
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Abstract
This research investigates the effect of stage cascade on amplifier circuits using transistor in the common emitter configuration. A two-stage amplifier was constructed and its performance was analyzed accordingly.
The voltage gain of the amplifier with bypass capacitor is 16.09dB and that non- bypass capacitor is 15.98dB with bandwidths of 600Hz and 800Hz respectively. The current gain of the circuit is 14.2dB. Input and output resistances of the circuit are 333.3? and 415.58? respectively. The power gain of the…
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Abstract. In this study the influence of some meteorological variables on Ultra High
Frequency (UHF) radio signals from Edo Broadcasting Service (EBS) in Benin City, South-
South, Nigeria located within Latitude 6°20’17?N and Longitude 5°37’32?E was investigated.
The measurements of the radio signal strength from EBS Television, transmitting at 743.25
MHz UHF and some meteorological variables (air temperature, atmospheric pressure and
relative humidity) using the Digital Community-Access/Cable Television (CATV) analyzer
and a self designed cost effective portable weather monitoring system…
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Abstract
Energy from the sun is now a major focus of many researchers mainly due to the inadequacy of fossil fuels to meet the recent high demand of energy. In other to convert this energy into useful means, solar panel needs to be put in place. In this study, the effects of some meteorological variables on the efficiency of solar panel within Benin City, South-South region of Nigeria was investigated. The physical principles of mono-crystalline solar panel were examined with…
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ABSTRACT: Despite the fact that GSM network have been in Nigeria for more than a decade, it is widely observed that each time there is a major event in a certain location and there is movement of people to that area, it is always very difficult to get a call through within the period by which the event is holding. The ultimate purpose of the research is to establish a baseline that correlates network quality and performance within an area…
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Abstract
One of the major concerns of cellular network service providers and their subscribers/customers is its performance which is mostly measured and determined by the Quality of Service (QoS). The assessment of these services from cellular network service providers’ point of view is mainly based on some Key Performance Indicators (KPIs). This research exploits and evaluates the major Key Performance Indicators to analyze the quality of service of an operational cellular network service provider that cover the Redeemed Christian Church…
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ABSTRACT: In this study, atmospheric variables such as air temperature, relative humidity and atmospheric
pressure were evaluated in order to determine the atmospheric refractivity over Auchi town in Edo State, Nigeria using
a portable weather monitoring system. The data revealed that, the average atmospheric refractivity was 354.31 N-units.
It was observed that air temperature, relative humidity and atmospheric pressure were having significant influence on
the atmospheric refractivity during all the months in 2017. This influence was much during the months…
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ABSTRACT: Research in weather measurement, monitoring and prognostications are
becoming more and more pertinent in this era of global warming; getting the appropriate
weather predictions and taking the necessary precautions have become very paramount. This
research shows the influence of air temperature on the dew point temperature in Benin City, Edo
State, Nigeria. The dew point temperature was approximated from the measured air temperature
and relative humidity with the aid of a self-designed weather monitoring system in 2016 and the READ MORE Download Staff Profile      


This study aims to ascertain the possible health risks on humans to trace metals in Ossiomo River sediment via different exposure pathways. The pollution of river sediments by trace metals has raised countless concern for their potential biological noxiousness, environmental durability, and biological accumulation to humans along the food chain. Selected trace metals were analyzed based on required analytic approaches. Standard statistical tools were used to evaluate the records collected from the field. The outcomes from the field showed that…
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The effect of toxic substances on aquatic lives from a wastewater indiscriminately discharged into the environment during oil and gas exploration activities in Nigeria is the focus of this study. A plant bioassay, the Allium cepa test, was used for the cytogenotoxicity screening of process water on root growth inhibition and chromosome abnormalities in the meristematic roots of the plant. Results of the physicochemical analysis of the wastewater collected from Nigerian Agip Oil Company (NAOC) facility at Ogboinbiri in Bayelsa…
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The sediment-pollution load of any river can be associated with wide range of anthropogenic and natural factors that surround it. A thorough analysis of the nature of sediments is required to identify the natural lithogenic and anthropogenic sources of contaminants. A total of 360 sediment samples were collected with an Eckman grab and 9 heavy metal parameters investigated monthly between March 2015 and August 2016 using standard analytic methods and quality control techniques. The concentrations of Fe, Mn, Zn, Cu,…
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This study aimed at assessing the Lead (Pb) residues in some selected canned foods obtained from some superstores in Benin City Metropolis and their health risk implications. Forty Five (45) samples of five different canned foods (chicken, corned beef, peas, mushrooms and corn) of varied brands from various industrial countries were procured from open market stores at Lagos Street and selected super markets along Ugbowo Lagos Road, Benin City with their controls. The samples were taken to the laboratory for…
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The objectives of this study are to determine the concentration of heavy metals in selected organs of free range chicken and ascertain the human health risk implications via consumption. Samples of free range chicken around the study areas were purchased from their owners. Heavy metal concentrations were analysed in tissues using Buck scientific atomic absorption spectrophotometer, model 210VGP. The results revealed that the heavy metal contents were not significant (P >0.05 and P>0.01) in all selected organs and across the…
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The objectives of this study were to investigate the impact of heavy metals in two
freshwater decapods and to evaluate the toxicity and human health risks through
the consumption of these freshwater decapods. Nine (9) heavy metals were
investigated in accordance with standard procedures and analyzed monthly from
March 2015-August 2016 in the studied decapods. The results of the heavy metal
concentrations in the prawn and crab varied in this rank; Fe > Zn > Mn > Cu > Pb…
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The objectives of this study were to evaluate the health risk concern of some trace metals in selected borehole drinking water proximal to open dumpsites in Benin City. Borehole water samples were collected and analysed for trace metals using standard methods. Health risk and pollution indices were used to characterise the trace metals. The average daily dosage (ADD) results showed low concentrations of the trace metals in the various borehole sites. Oluku 1 had Mn (0.04), Zn (0.11) and Cu…
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Abstract

this study investigated availability and utilization of information and communication technology (ICT) facilities by teachers for effective teaching and learning in federal polytechnics, using descriptive survey research design.


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In this study, the potential toxicity of process wastewater from oil and gas exploration in the Niger Delta region of Nigeria was investigated on Clarias gariepinus juveniles using a renewable static bioassay with continuous aeration to determine its acute toxicity. Physicochemical analysis of the wastewater showed that it characterised by a foul odour, was slightly alkaline (pH 7.72) and had high values of chemical oxygen demand (COD) and conductivity (100.20 mg/L and 2793.33 ?S/cm) respectively. Lead, chromium and nickel were…
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One of the greatest challenges posed by environmental risks to aquatic lives in the Niger Delta region of Nigeria results from the indiscriminate discharge of produced water from oil and gas exploration activities in the area into the environment. In this study, Clarias gariepinus juveniles (measuring 17±1.0 cm and mean weight 12.4±0.5 g) were exposed to different concentrations of produced water under laboratory conditions to determine the 96 h LC50 value. The acute toxicity of exposed juveniles was found to…
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Abstract: intelligent transportation systems (ITS) based on wireless sensor is proposed in this paper the design of the positioning system, using wireless sensor network with low cost, low power consumption, multi-function, the characteristics of the sensor nodes deployed in monitoring area, through the vehicle's sound, vibration, infrared, magnetic field, such as signal analysis, to identify location and tracking, and in appropriate time to continue to track vehicles. One of the main goals of intelligent transportation systems (ITS) is economical profit…
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ABSTRACT
The number of massive data collected today by software in different fields vary
from academia to business and many other fields, this growth of data is
increasingly becoming a huge problem in regards to storage and effective data
management to meet up with high performance and scalability needed. The need
for highly organised data storage and analysis for the purpose of accessibility by
other applications simultaneously on real time bases is greatly on the increase. The
emerging of new…
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Abstract
With rapid and flexible resource provisioning of virtualization in data centers, problems of determining optimal
virtual machine (VM) placements and dealing with virtualization overheads have emerged due to workload
fluctuations and changing needs. These challenges have impacts on system performance.In this work, a
performance model based on queuing theory, statistical methods and basic theories on system performance is
proposed in which the researcher models the response time distribution of an application performance metric
conditioned on variables that can be…
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Abstract
Energy is a limited resource in wireless sensor networks. In fact, the reduction of power consumption is crucial
to increase the lifetime of low power sensor networks. Wireless sensor networks consist of small, autonomous
devices with wireless networking capabilities. In order to further increase the applicability in real world
applications, minimizing power consumption is one of the most critical issues. Therefore, accurate power model
is required for the evaluation of wireless sensor networks. To estimate the lifetime of sensor…
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ABSTRACT
This research focuses on reducing or minimizing the power consumption, thereby increasing the network
lifetime and also demonstrates a methodology for power consumption evaluation of WSN. The research also
analyzes the energy consumption of ad hoc nodes using IEEE 802.11 interfaces; this was achieved using OPNET
simulator. The evaluation takes into account the properties of the medium access protocol and the process of
forwarding packets in ad hoc mode. The key point is to determine the node lifetime based…
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Abstract: Internet has become ubiquitous and organizations have moved from the traditional storage using physical files
localized in cabinets to online remote storage accessible over websites. Over the years, different website evaluation tools have
been developed to assist web administrators with website maintenance functions. Prior to a proper website assessment using
majority of such tools, the web administrator would have to access each one differently reasons being that each tool is
developed to measure different quality parameters. Later, Fuzz-web was…
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Abstract: Competitions in the mobile market has driven mobile software
application organizations to meet market demand by developing applications
within a short period of time which should run on different mobile platforms. As
such, porting these mobile applications to other platforms once they have been
developed on one platform, has been considered a desirable attribute. However,
the methods used in porting these mobile applications to other platforms have
been adhoc which has also affected the testing activities of the ported…
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This paper investigates how total primary energy production and total primary energy consumption can reduce the unemployment rate in Nigeria, focusing on the 2050 population. A reduction in Nigeria’s unemployment rate will inevitably increase economic growth and foster national development in the economy. Data on total primary energy production, total primary energy consumption and unemployment rate were collected from the National Bureau of Statistics, World Energy Council, Global Energy Network Institute and the Central Bank of Nigeria statistical…
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We examined the relationship between dividend policy and share price volatility across companies listed in the Nigerian Stock Exchange Market. 26 sampled firms across a number of sectors were selected through simple random sampling technique over a period (2004 – 2011). Our model specification captured share price volatility (P.vol) as the dependent variable, while dividend yield (Dyld) and dividend payout ratio (Payout) were the independent variable; firm size (size), long-term debt (Debt), earnings volatility (E.vol) and asset growth…
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Abstract
This paper is focused on a salary management system that comprises localized data tailored to the domain of Nigerian schools payroll management. The requirements engineering methodology, fact finding techniques such as descriptive and participant observation, and database analytics tools such as entity relationship diagram are combined to achieve the success of having a payroll management system that can handle employee and management staff data securely with minimal manual intervention. The design was made to fit all necessary segments to…
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This study seeks to examine the factors responsible for corporate failure in Nigeria. The study adopted a survey research design, data were drawn from primary sources. The population of the study consisted of all preparers and users of financial reports made up of external auditors, company management, tax administrators and investors in Delta and Rivers states, Nigeria. Using convenience and simple random sampling techniques, a total of 194 respondents were administered questionnaire in the area of study. The…
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The study examined the pattern of government expenditure in Nigeria to know if the growth of public expenditure follows the proposition of Wagner’s law of increasing state activities. The study utilized the Johansen cointegration test to examine data from 1960 to 2012. Government expenditure and gross domestic product was found to have long-run equilibrium relation with strong positive correlation as confirmation by correlation matrix. The findings supported the proposition of Wagner’s law of increasing state activities. Following the…
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The objective of this study is to examine the determinants of audit report timeliness in Nigeria. Specifically, the study examines the effect of company size, profitability, complexity and audit firm type on audit report timeliness. The cross-sectional research design was adopted with an extensive reliance on secondary data. The data was source from annual reports of manufacturing companies quoted on the floor of the Nigerian stock exchange for 2010-2012. The ordinary least squares (OLS) regression technique was utilized…
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This is aptly the era of liberal triumphalism following from the events of 1990s that engendered global capitalism at expense of global socialism. Thus, globalisation or globalism is simply global capitalism. But current phase of globalisation has been gendered, sexualised or feminised just as feminism has been globalised. Consequently, feminist scholars have played a vital role in opening up the study of globalisation to more diverse and critical perspectives that engaged the voices and perspectives of the disadvantaged…
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While many thought modern African states would have found solution to the problem of artificial boundaries that colonialism birthed by now, Post-colonial Africa is yet to find plausible answers to inherited issues of identity and ethnicity years after colonialism. Where those lumped together into a geographical expression find similar rhythm of identity that class could afford, differing ethnic identity and religious beliefs pitch once peaceful brothers and neighbours against one another; leaving traces of war and the continent…
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This result reveals the existence of long-run equilibrium relationship between the variables. It further reveals that theimpact of non-oil export on the economic growth was positive and significant over the years covered in the study. The result also further indicates the near extinction of the non-oil sector revenue source if crucial policy formulation and execution is not embarked upon.

The study however recommends the government to provide infrastructural framework, broaden the non-oil export base, among others…
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Abstract
Background: The study was designed to investigate the effect of stem bark aqueous extract of Enantia chlorantha on the sperm
parameters and the histo-architecture of the testis of adult Wistar rats treated with lead (IV) oxide.
Methods: A total of 20 adult male rats weighing between 180 g-200 g were randomly selected into 4 groups (n=5). Group 1 was
giving only phosphate buffered saline; Group 2 was treated with 150 mg/kg body weight of the extract; Group 3 was…
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ABSTRACT
Objectives: Male infertility caused by exposure to
heavy metals is a current global issue. Exposure to cadmium
chloride (CdCl2) negatively affects the male reproductive
system. Many infertile people, especially in developing
countries, resort to folkloric treatment. Plukenetia
conophora is used in Nigerian folk medicine to promote
fertility. This study investigated the effects of Plukenetia
conophora (PC) and 4H-Pyran-4-One 2,3-Dihydro-3,5-Dihydroxy-
6-Methyl (DDMP) on Wistar rats with cadmium
chloride-induced testicular damage.
Methods: Forty-two male Wistar rats (150-190g) were
divided into seven…
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Abstract
Garcinia kola has been confirmed for spermatogenic and tissue enhancing effect of testis in male wistar rats. This study
was carried out to investigate the histological effect of ethanolic extract of Garcinia kola on Lead II oxide induced testicular
damage. Thirty five (35) adult male wistar rats were randomly selected into seven (7) groups n=5. Group A received 0.5 ml
saline solution, Group B received 100 mg/kg of Garcinia kola extract only, Group C received 5 mg/kg of Lead…
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The role of adrenergic receptors in cortisol-induced hyperglycaemia is not well known. The present
study investigates the effects of adrenergic receptor blockers in cortisol-induced hyperglycaemia in the
common African toad (Bufo regularis). Each toad was fasted and anesthetized with sodium
pentobarbitone (3 mg/100 g i.p). The animals (control) received intravenous (i.v) injection of 0.7%
amphibian saline while animals (untreated) were given cortisol (20 ?g/kg). In pre-treatment groups,
animals received prazosin (0.2 mg/kg i.v), propranolol 0.5 mg/kg or combination of prazosin…
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The role of adrenergic receptors in cortisol-induced hyperglycaemia is not well known. The present
study investigates the effects of adrenergic receptor blockers in cortisol-induced hyperglycaemia in the
common African toad (Bufo regularis). Each toad was fasted and anesthetized with sodium
pentobarbitone (3 mg/100 g i.p). The animals (control) received intravenous (i.v) injection of 0.7%
amphibian saline while animals (untreated) were given cortisol (20 ?g/kg). In pre-treatment groups,
animals received prazosin (0.2 mg/kg i.v), propranolol 0.5 mg/kg or combination of prazosin…
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ABSTRACT
Aim: This study was carried out to investigate the role of coconut oil on
pentylenetetrazole (PTZ) induced convulsant activity in Wistar rats using the laboratory
model. Convulsant activity was achieved by injection of PTZ.
Study Design: The rats were divided into five groups. Group 1 served as control and
received distilled water orally. Group2 was a reference group and received only PTZ. The
remaining three groups (3, 4 and 5) were test groups and rats were given oral
administration…
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ABSTRACT
Introduction: Volatile organic compounds (VOCs) in paint are considered harmful to the
environment, especially for people who work with them on a regular basis. Aim: In this study,
we investigated the effect of VOCs in gloss paint, emulsion, and thinner on the testes of male
Wistar rats. Materials and Methods: Twenty adult Wistar rats (100–200 g) were assigned to
four (4) groups (A–D) of five rats each. Groups A (thinner), B (emulsion paint), and C (gloss
paint) were exposed…
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ABSTRACT:
Background: Hibiscus sabdariffa is used for medicinal purposes, especially in alternative medicine. It
is a folk remedy for abscesses, cancer, cough, debility, dyspepsia, dysuria, fever, hangover, heart ailments,
neurosis, scurvy and strangury. This present study was carried out to investigate the anti-inflammatory activity
of methanolic extract of hibiscus sabdariffa in adult wistar rat.
Methods: A total of Twenty-five (25) of both sexes rats weighing between 180 - 200 g were randomly
divided into five (5) groups of five (5)…
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ABSTRACT
The contraceptive effect of oral administration of ethanolic extract of Dioscorea villosa tuber for thirty days
on reproductive hormones of female albino rats was investigated. Twenty four female albino rats weighing
150-220g were completely randomized into four groups (A-D) comprising six rats each. Animals in Group A
(control) were administered 0.5ml of distilled water. Animals in groups B, C and D received 100, 200 and
400mg/kg body weight of ethanolic extract of Dioscorea villosa tuber respectively for 30 consecutive…
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ABSTRACT: The present study was designed to investigate the role of L-ergothioneine supplement against
cisplatin-induced reproductive toxicity in male wistar rats, regarding the antioxidant and cytoprotectant
property of this supplement, and redox indices generated by cisplatin administration during
administration.Twenty adult male wistar rats randomly divided into four groups (n=5) were used in this study
and subjected to treatment as follows; Group I (control) received 10mL/kg distilled water for 14days; Group II
(Cis alone) received a single dose of 7 mg/kg…
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Abstract
A series of glycoprotein and glycolipids on red blood cell surface constitute blood group antigens. These are the ABO (A,
B, AB and O) and Rh blood groups which are the most important blood groups despite the long list of several other blood
groups discovered so far. The ABO and Rh blood groups vary worldwide and are not found in equal numbers even among
ethnic groups. Therefore, this study was aimed at having information on the distribution of ABO…
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ABSTRACT
Spermatogenesis is an extremely active replicative process capable of generating
approximately 1000 sperms a second with correspondingly high rates of mitochondrial
oxygen consumption by the germinal epithelium. This process generates reactive oxygen
species (ROS) through reactions with drugs and environmental toxins, or when the level of
antioxidants is diminished results in oxidative stress. Excessive production of free radicals
or ROS can damage sperm, testes and can cause serious chemical damage to
biomolecules (DNA, proteins, and unsaturated lipids) which ultimately…
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ABSTRACT
Objective: The study investigated the activities of antihypoglycemic and antihypolipidemic of ethanolic roots extract of Crossopteryx febrifuga (CF) in alloxan-induced diabetic rats.
Methods: Twenty male albino rats were randomly distributed to four groups; I, II, III and IV with each consisting of five animals received extracts as follows: Group I, C .febrifuga
(500 mg/kg bwt); Group II, C.febrifuga (250 mg/kg bwt); Group III, C. febrifuga (100 mg/kg bwt); Group IV, 0.5 ml (2% w/v) acacia solution and served as…
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ABSTRACT: The biological responses of Allium sativum (Garlic) have been largely attributed stimulation of
immune function and reduction of risk factors for cardiovascular diseases and cancer. The effects of Allium sativum
on blood cells and platelets was investigated in Wistar rats. The animals (105 – 158 g) were divided into three (3)
groups; the Group A served as the control received 1 ml of distilled water, Group B received 3.5 g/kg body weight of
garlic juice and Group C received…
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Abstract: The last decades have witnessed an upsurge of neuropeptides research. These substances regulate or
influence various functions in the body like appetite, water intake, learning and memory, adaptive responses to
environmental stress, thermoregulation and fever, social behaviour, and sleep. Kisspeptin (formerly known as
metastin) is a protein that is encoded by the KISS1 gene in the Anteroventral periventricular nucleus (AVPV)
and Arcuate nucleus (ARC) nuclei of the hypothalamus which was originally discovered in 1996 by Lee and
Welch while…
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within population, providing valuable insight into the dynamics of population structure. The present study, therefore aimed at
providing the percentage frequency of the ABO and Rhesus distribution pattern of adults who attended the Federal Medical
Centre Lokoja, Kogi State, Nigeria for record and health planning. The study was carried out on two hundred adults (77 male and
123 female). The blood samples were taken by cubital venepuncture and analysed using the agglutination method (Dacie and
Lewis 2001). Among the male…
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ABSTRACT
This study investigated the effect of ethanolic roots extract of
Pseudocecrela kotschyi on some hematological and biochemical
parameters in alloxan-induced diabetic rats. Twenty- Five (25) wistar
rats were randomly divided into five (5) experimental groups: control,
diabetic, standard drug (glibenclamide) and Pseudocedrela kotschyi
treated diabetic groups. The animals in four out of five groups were
fasted for 18 h and were made diabetic by injecting with a single dose
of alloxan (ALX) 150 mg kg-1. At the end of…
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ABSTRACT
Aim: The study investigated the modulating roles of ethanolic roots extract of
Crossopteryx febrifuga (CF) for its antihyperglycemic, antihyperlipidemic, glycosylated
hemoglobin effects and cytoarchitectural changes on pancreatic beta cells in alloxaninduced
diabetic rats
Study Design: Experimental diabetes using animal models.
Methodology: Twenty- Five (25) male albino rats were randomly divided into five (5)
experimental groups: control, diabetic, standard drug (glibenclamide 10 mg/kg body wt)
and C. febrifuga (375 and 500 mg/kg bwt) treated diabetic groups The animals in four…
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Abstract- This study investigates the various fetal presentations among women in Warri and the various predisposing factors which may have
possibly brought about these variations; the major positions considered were cephalic, breech and transverse, with the considered influencing
factors being gestational age of the fetus, maternal age, amniotic fluid volume, parity, and method of previous deliveries. A total of 105 ultrasound
fetal biometries with a total of 108 fetuses, between 15-40 weeks of gestational age, and maternal age between 19…
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ABSTRACT
The proximate and mineral composition of water melon, bitter melon, pawpaw, guava
and cherry seeds were carried out; these sample seeds were obtained from discards
of plants and prepared for use by decocting, sun drying and grinding into powder.
Using petroleum ether; of boiling range 40-60oC, their fats were extracted, the
protein content, ash content, crude fibre, moisture, carbohydrate as well as the
mineral contents were determined using standard methods. The fats yield of
44.00±0.04, 34.00±0.00, 26.01±0.00, 19.01±0.02 and…
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Abstract: The present study investigates the physicochemical properties of selected brands of vegetable oils (groundnut,
soya bean oil, palm oil and palm kernel oil) sold in Minna, using standard procedure. The specific gravity of
the oil ranged from 0.93±0.30 to 0.96±0.20. There was a significant difference in the relative densities of the
oils studied. Natural palm oil has the highest relative density (1.42±0.26) while natural grand pure oil has the
least (1.36±0.13). The refractive index varied from 1.35±0.05 to 1.45±0.35.…
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Traditional medicine practitioners TMPs have developed means of treating skin and soft tissue
infections by using plant extract. In this study, four medicinal plants which are used for treating skin
diseases were analysed, to determine their phytochemical constituents and antimicrobial activity.
Extraction and phytochemical screening was done using standard analytical procedures. The
antimicrobial assay was carried out using agar well diffusion method. Methanol extract of
Mitrarcapus villosus, Psidium guajava, Senna spectabilis and Anogeisus leocarpus contained tannins, phenols, cardiac glycosides, flavonoids, saponins,…
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The main aim of this study is to determine the levels of soil pollution with heavy metals in the
vicinity of a railway station in Minna, Niger state, Nigeria. In this study, 15 soil samples were
collected at a depth of 0-15 cm from the vicinity of Minna railway station, Niger State, Nigeria, and
analyzed at the chemistry department, Federal University of Technology Minna, Nigeria between
May 2009 and November, 2009. The soil samples were acid digested using a mixture…
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Abstract: The present study investigates the physicochemical properties of selected brands of vegetable oils (groundnut,
soya bean oil, palm oil and palm kernel oil) sold in Minna, using standard procedure. The specific gravity of
the oil ranged from 0.93±0.30 to 0.96±0.20. There was a significant difference in the relative densities of the
oils studied. Natural palm oil has the highest relative density (1.42±0.26) while natural grand pure oil has the
least (1.36±0.13). The refractive index varied from 1.35±0.05 to 1.45±0.35.…
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ABSTRACT
The proximate and mineral composition of water melon, bitter melon, pawpaw, guava
and cherry seeds were carried out; these sample seeds were obtained from discards
of plants and prepared for use by decocting, sun drying and grinding into powder.
Using petroleum ether; of boiling range 40-60oC, their fats were extracted, the
protein content, ash content, crude fibre, moisture, carbohydrate as well as the
mineral contents were determined using standard methods. The fats yield of
44.00±0.04, 34.00±0.00, 26.01±0.00, 19.01±0.02 and…
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Zinc oxide (ZnO) varistors are electronic device that are suitable for surge voltage protection for low, medium and high voltage applications. The raw materials for the production of varistors are widely available in Nigeria. Exploratory research and development has shown that varistors can be produced locally using available resources. The local production of the ZnO varistor in Nigeria will create Job opportunity and conserve the scarce foreign exchange expended on the importation of ZnO varistors. The major challenges facing the…
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The maximum power points of a 100watts, 17.5 volts, MBF:100 type solar panel mounted in Ambrose Alli University, Ekpoma, Nigeria for different hours of the day, under various resistive load conditions had been presented. The photovoltaic module exhibits a non-linear irradiance dependent voltage – current characteristics and the maximum power point varies with solar insolation. The maximum power point of 49.53watts occurs at 1.00pm when the sun is overhead. The result shows that the power generated varies with time and…
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Car suspension system is a mechanism that separates the car from the tire. The objective of the suspension
system is to improve a ride quality by ensuring passenger’s comfort and good car road handling when the car is
subjected to an input excitation. The dynamics of the suspension system was mathematically modeled. The
system transfer function determined. The suspension system performance characteristics of overshoot and
settling time set at not more than 5% and 5seconds respectively. PID controller was designed…
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There are several benefits for using renewable energy sources such as emission reduction, lowering of cost and technological gain. In many remote communities in the world, standalone power systems utilizing renewable sources of energy are widely deployed to counter the widespread of energy shortage conditions. The present days? quest for emission reduction from energy systems couple with the intention for rural electrification has fostered aggressive research directives for renewable energy for sustainable development. The major contributions to the existing body…
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Proper coordination of protective relays at substation renders a significant part in the safe operation of power system. The principal aim of coordinating protective relays in a power system network is to obtain selectivity without sacrificing sensitivity and fast fault clearance time. In order to minimize outages, proper coordination of protective relays must be ensured. As a result of increased urbanization, a substantial increase in electric power demand has been recorded in recent years. But, owing to ineffective coordination of…
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Car suspension system is a mechanism that separates the car from the tire. The objective of the suspension system is to improve a ride quality by ensuring passenger’s comfort and good car road handling when the car is subjected to an input excitation. The dynamics of the suspension system was mathematically modeled. The system transfer function determined. The suspension system performance characteristics of overshoot and settling time set as not more than 5% and 5seconds respectively. PID controller was designed…
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Interest involves the determination of G.S.M signal strength in Mud, Block and Steel buildings in Ekpoma. Existing path loss exponent values were studied to determine the extent to which building characteristics (in terms of its construction and materials) affect propagated signal. Measurements of signal level taken at different building type were recorded to determine the path loss exponent values, which were 7.33, 8.33 and 12.67dBm for Mud, Block and Steel buildings respectively. A model was statistically developed for each of…
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Car suspension system is a mechanism that separates the car from the tire. The objective of the suspension
system is to improve a ride quality by ensuring passenger’s comfort and good car road handling when the car is
subjected to an input excitation. The dynamics of the suspension system was mathematically modeled. The
system transfer function determined. The suspension system performance characteristics of overshoot and
settling time set at not more than 5% and 5seconds respectively. Frequency response controller was…
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This study present a 3kVA, single-phase alternating current, electric are welding machine and a battery charger in one unit. The device was designed, fabricating and tested using material and tools available locally in Nigeria. The work was achieved through the design and construction of a core type power transformer, which step down the 220 Volt main voltages to the appropriate voltage levels of 14 Volt, 26 Volts and 90Volts respectively. The 14 and 26 Volts were rectified using bridge rectifies…
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ABSTRACT
Nigeria is sustained principally from revenue from the oil and gas industry. Communities around the operational areas of the industry complain that laws governing the distribution of the benefits arising from the industry did not capture their interest. Using both peaceful and non-peaceful ways, host Communities have tried to draw attention to their complaints. The non-peaceful means took the form of violent attacks of oil pipelines, kidnapping. The attacks crippled the oil industry and caused reduction in…
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The voltage-time characteristics of a 140 W, 33 V solar panel is presented in this research. The readings and plots obtained shows that the terminal voltage of solar panel depends on time of the day. Between 7:30 am to 6:00 pm, the terminal voltage of solar panel is at maximum. From 7:00 pm to 6:00 am, the terminal voltage of the solar panel is zero. A storage battery is therefore, necessary to store electrical energy to be used at night.…
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ABSTRACT
Terrorism remains a major threat to Nigeria’s peace and security. The thematic preoccupation of this work is the Fulani herdsmen. As could be noticed that the Fulani is the cynosure of all eyes, this paper therefore focuses on the laws made to regulate the herdsmen unlawful act which threatens the occupants of the Nigeria community. It further brought into limelight the anti-grazing law and it critics, Terrorism Prevention Act 2011, and the simple way forward using the…
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Abstract
This paper looks at the entertainment industry in Nigeria and its tax potentials. It also looks at the sport industry which is also a form of entertainment. The entertainment industry including Sport has become a money spinner for the participants and the government at the federal, state and local level should work-out a way to tap from this industry in form of tax that will eventually be used to develop infrastructure. Each participant in the industry is…
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ABSTRACT
The Community Development Association's which ordinarily was to engineer and fast track community development by drawing government, developers and settlers attention to the infrastructural needs of the community for the good of all became "terrors" and "warlords" . In a bid to curb the unscrupulous, embarrassing and unending activities of the Community Development Associations in Edo State, which includes the indiscriminate levying of land developers, the use of deadly weapons to violently take over or prevent a…
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