PERFORMANCE EVALUATION OF ENERGY-SAVING BULBS IN SELECTED NIGERIAN LOCATIONS WITH ARTIFICIAL NEURAL NETWORK MODELLING

The performance evaluation of energy-saving bulbs in the Nigerian market is crucial in assisting energy auditing, which is beneficial to producers and consumers of electricity. Specifically, the high-power bills issued monthly by Electricity Distribution Company in most parts of Nigeria have made Nigerians in our various domestic homes embrace the latest lighting technology that consumes less energy.In this study, lighting system data were obtained from twenty-four households from different geographical zones in Nigeria. The performance evaluation of compact fluorescent light(CFL) bulbs was investigated and the observation was predicted with artificial neural networks (ANN) to enhance informed policy formulation and decision-makingResults showed that CFL bulbs givehigh-quality light that is cost-effective and environmentally friendly. ANN predicted the observation with high accuracie

SENSITIVITY ANALYSIS OF HYBRIDIZED WIND/PV ENERGY SYSTEM FOR POWERING TELECOMMUNICATION MAST IN LAGOS SOUTH-WEST NIGERIA

Power delivery micro-grid of hybridized wind and solar system installations keep growing worldwide. There is a great economic advantage in the use of cleaner renewable energy for power generation in the telecommunication industries, especially in remote areas. This studyanalyses the effect of three wind speed fluctuationsor levels on a hybridizedwind energy system’s electricity production for a typical three (3) BTS telecommunication mast using Hybrid Optimization Model for Energy Resources (HOMER)PRO software in Lagos south-western Nigeria as a case study. The economic implication of energy at the different wind speed levels investigated was also derived. From the obtained results, a wind speed of 4, 4.22, and 5 m/s gave an annual electric production of 39,950, 39,050, and 39,250 kWh and energy cost of 195, 192, and ₦175, respectively. This result is useful for the techno-economic operation of hybridized wind/solar system powered by three (3) BTS telecommunication masts

AMELIORATION OF ARSENIC-INDUCED TOXICITY BY ETHANOL LEAF EXTRACT OF PHYLLANTUS AMARUS LINN AND VITAMIN C IN MALE ALBINO RATS

The ameliorative effect of ethanol leaf extract of Phyllantus amarus (EEPA) and vitamin C in arsenic-induced toxicity was studied. Thirty-six (36) male albino rats divided into six groups of six (6) rats each were used for the study. Arsenic toxicity was induced in three of the groups by daily intake of 100 ppm of arsenic as Dimethylarsenate (DMA) in their drinking water.  Two of the arsenic-exposed groups were treated with 200 and 500 mg/kg bwt of EEPA and vitamin C respectively. The third group was not treated during arsenic exposure. The fourth and fifth groups were positive control for P. amarus and Vitamin C respectively, while another group served as the normal control. All treatments were done orally for six weeks. The effects of treatments on lipid profile, lipid peroxidation and liver function were thereafter studied. Increased levels of total cholesterol, LDL-cholesterol and malondialdehyde (MDA) were observed in plasma and lymphocytes of untreated arsenic-exposed rats compared to the control group. Arsenic increased total cholesterol and LDL-cholesterol concentrations, while triacylglycerol concentration was reduced significantly. Treatments with EEPA and Vitamin C however ameliorated the dyslipidemia observed in arsenic-exposed groups. Exposure to DMA increased plasma activities of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) of the animals, while plasma activity of ALT in rats treated with Vitamin C was not different compared to the control. Both treatments however, had no significant effect (p > 0.05) on the activity of plasma AST. P. amarus may therefore play a role in ameliorating arsenic-induced dyslipidemia in male albino rats.     &nbsp

Students’ Perception of Reference Services as Determinant of Library use in Colleges of Agriculture in Oyo State, Nigeria

Descriptive survey design was used to study the students’ perception of reference services as determinant of library use in the Colleges of Agriculture in Oyo State (Federal College of Agriculture, Moor Plantation, Apata, Ibadan [FCAIB] and Oyo State College of Agriculture and Technology, Igboora [OYSCATECH]). The study has four objectives, three research questions and one research hypothesis was tested at 0.05 level of significance. Purposive stratified proportionate random sampling technique and a sampling fraction of fifteen percent (15%) were used to select a sample size of two hundred and eighty-seven (287) students out of the one thousand eight hundred and eighty-five (1885) students in the eight (8) departments that are common to the two Colleges (Population of the study). The response from a well-structured questionnaire administered on the sampled population was analyzed using Statistical Package for Social Science (SPSS). The result of the analyzed data showed positive perception of reference services in OYSCATECH (WX=2.71) and FCAIB (WX= 2.44). The result showed positive correlation between the perception of reference services and use of library in the two colleges of Agriculture in Oyo State –FCAIB ( r = 0.311) and OYSCATECH (r = 0.214). The study also identified purposes and frequencies of using the library by the students in the two institutions. The study recommended the use of electronic reference services in order to enhance ease, visibility, relevance and efficiency of reference services in our libraries and more importantly to encourage use of library

Control and prevention of biodeteriation caused by termites (Isoptera

The paper reviewed the control measures against damage caused by termites. The objective was achieved using baseline published literature and data. This is particularly important because of the ever present destructive effect and presence of termites in every area of life worldwide. Multiple effective measures, ranging from chemical treatments to independent pest management procedures were identified. The right choice and application of termite preventive and control measures will be a great reprieve to stakeholders all over the world.Keywords: Damage, Control, Termites

The Role of Necropsy in Diagnostic Dilemmas as Seen in a Tertiary Hospital in North Central Nigeria

Background. Necropsy (autopsy) has helped medical science and law. It has given rise to numerous diagnostic surprises as it explains cause of death, pathogenesis of diseases, and circumstances of death. It also explains reasons for most therapeutic failures. In spite of its usefulness, the rate has dropped worldwide and Africa is worse hit. This work aims to highlight the role autopsy (Necropsy) plays in demystifying diagnostic dilemmas and to encourage its patronage by medical practitioners, law enforcement agents and society. Methods. This is a retrospective review of autopsy and clinical reports of cases seen by pathologists and physicians in the Jos University Teaching Hospital (JUTH), Jos, North central Nigeria. Results. A total 166 cases were studied out of which 52 had same diagnosis for both attending physician and pathologist, 106 had different diagnoses and in eight cases diagnoses remained unknown even after autopsy was performed. Conclusions. Autopsy remains an important tool for obtaining definitive diagnosis, determining cause of death to explain pathogenesis of diseases, medical auditing and a vital source of data for health statistics and planning

Effects of aqueous leave extract of Ficus exasperata on pathophysiology and histopathogy of alloxan-induced diabetic albino rats

The effects of treatment with aqeous extract of Ficus exasperata on the pathophysiology and histopathology in alloxan-induced diabetic rats was studied. Thirty rats divided into five treatment and one control groups (n = 5 rats each) were used for the study. Rats in the treatment groups were induced by a single intraperitoneal injection of 150 mg/kg alloxan monohydrate. Diabetic groups were thereafter treated with 100, 200 and 300 mg/kg, respectively of acqeous extract of F. exasperata, the fourth group was treated with 10 mg/kg glibenclamide, the last group was not treated after induction while the control (non-diabetic) group received distilled water. Hyperglycemia was recorded in all induced rats after alloxan induction, while treatment with the different concentrations of the plant extract reversed hyperglycemia within four days. Values of Packed cell volume (PCV), Haemoglobin concentration (Hb) and Red blood cell count (RBC) were higher in rats treated with the extract than in rats treated with glibenclamide, while ionoregulatory distruptions observed in the diabetic groups reduced significantly (p < 0.05) in rats treated with the extract. Lipid profile parameters were higher in rats treated with glibenclamide compared to groups treated with the extract. Treatment with the plant extract ameliorated the various degenerations observed in the pancreas, liver and kidney in contrast to untreated group and group treated with glibenclamide. Results from this study demonstrated the ameliorative effects of acqeous leave extract of F. exasperata on the pathophysiological and histopathological complications of diabetes mellitus

Evaluation of Formation Damage and Assessment of Well Productivity of Oredo Field, Edo State, Nigeria

Formation damage canincurconsiderable cost for remediation and deferred production. Thorough understanding of the formation damage mechanisms, stringent measures for its control and prevention, and effective and efficient treatments are the keys for optimum production strategies for oil and gas fields. WELL 4X was investigated in this study to properly diagnosed and evaluate productivity in OREDO FIELD and Bottom Hole Pressure survey was used from Bottom Hole Pressure analysis in addition to the information of the well production history and reservoir data available to determine and assess the extent of the formation damage in the well. The WELL 4X was stimulated using Acid Foam Diversion Techniques to enhance reservoir productivity and increase economic operations. The stimulation job done on the well showed a peak increase of production from 850 bbl/day to 3200 b/d before it declined to 2150 bbl/day, and finally maintained an average stabilized rate of 2000 bbl/day. It has to be established that the treatment method on WELL 4X using Acid Foam Diversion Techniques and the Bottom Hole Pressure survey conducted on the WELL 4X in OREDO FIELD is found to be efficient in the determination and evaluation of formation damage