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OALib Journal期刊

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Development and Performance Evaluation of Palm Kernel Shells Fueled Stove Converting Waste to Energy  [PDF]
Basil Olufemi Akinnuli, Oluwaseun Oluwagbemiga Ojo, Olutosin Olufisayo Ilori
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1105032
Abstract:
Oil palm (Elaesis guineensis Jacq.) is an indigenous forest product of West Africa. The natural groves usually have palms that bear ordinary fruits. These fruits emerged hard-kernelled shell (dura) and thin-kernelled shell (tenera). These kernels were found useful as fuel by researcher due to its high calorific value. The existing fuels such as kerosene, gas, are out of reach to an average Nigerian due to its scarcity and high cost. Other means of fuels like charcoal, wood are not hygienic and also not easy to get due to high rate of deforestation, hence the development of kernel-fuel stove. This was possible after preliminary investigation of its calorific value which was found to be 16.9 MJ. The major components of the kernel-fueled stove are the: frame, blower, miner plate, pot carrier and burning chamber. The capacity of the stove is 22.4 kg of kernel shell; its performance evaluation was carried out by comparing the developed stove with other stoves fueled by sawdust, charcoal, gas, kerosene and electric cooker, and it was discovered it got the shortest time for boiling 3 liters of water in 2.30 minutes.
Order Relation on the Permutation Symbols in the Ehresmann Subvariety Class Associated to the Distinguished Monomials of Flag Manifolds  [PDF]
Praise Adeyemo, Samuel Ilori
Advances in Pure Mathematics (APM) , 2013, DOI: 10.4236/apm.2013.37083
Abstract:

In this paper, we use the theory of lexicographical and graded lexicographical orders to compare two distinguished monomials through their codes of invariants \"\" and study the effect of this comparison on their respective defining permutation symbols in the Ehresmann subvariety classes.

Regulation of glucose and protein syntheses by Micrococcus luteus during the fermentation of a Nigerian rice, Oryza sativa variety “Igbimo”  [PDF]
Bolatito Esther Boboye, Ibiyemi Olufisayo Daramola
Advances in Bioscience and Biotechnology (ABB) , 2011, DOI: 10.4236/abb.2011.24035
Abstract: Micrococcus luteus synthesises glucose and protein during the fermentation of a Nigerian rice. To regulate the formation of these substances, mutation was carried out with an alkylating agent: ethylmethyl sulphonate (EMS). Screening the mutants generated for the levels of the traits expressed, four major groups were obtained. These are poor, moderate, good and super producers of either glucose or protein. They produced the properties at 0 - 1.00, 1.01 to 1.99 (moderate) and 2.0 to 2.99 (good) and 3.0 and above (super) mg.mL–1 of each substance. The classes were made up of 37, 40, 20 and 3 mutants for glucose production and 13, 35, 40 and 12 mutants for protein synthesis. The wild strain bacterium made 0.86 mg.mL–1 glucose and 1.2 mg.mL–1 protein describing the M. luteus as poor glucose maker and moderate protein producer. It was also noticed that the mutation caused some variants (25%) to form more glucose than protein; the remaining 75% of the population are made up of two sets viz: mutants having better ability to synthesise protein at higher concentrations than glucose and those that formed about the same amounts of the substances. It thus follows that the glucose and protein productions in M. luteus are genetically based and can be regulated by genetic manipulation.
Molecular Characterization of Type II Transposable Elements in Cowpea [Vigna unguiculata (L.) Walp]  [PDF]
Olufisayo Kolade, Adebola Raji, Iyiola Fawole, Ivan Ingelbrecht
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.65082
Abstract: Previous genetic studies in cowpea [Vigna unguiculata (L.) Walp] have shown that an active bipartite transposable element (TE) is responsible for a range of mutant phenotypes of its leaf, stem and flower. Since type II TEs have not been characterized at the molecular level in cowpea, this study was initiated to survey the presence of type II TEs in the cowpea genome. Type II TEs: Enhancer/Suppressor-mutator (En/Spm) and Miniature Inverted-repeat Transposable Elements (MITEs) were isolated and characterized. The sequence identity between the EnSpm TE clones was 46% at the nucleotide level (NL) and 30% at the amino acid level (AL) while that of MITEs was 71% at NL and 63% at AL. These cowpea En/Spm TEs were 80% homologous with En/Spm elements of other crops at NL and 46% at AL. The MITEs were 96% similar at NL and 18% homologous at AL. DNA gel blot analysis confirmed the presence of the En/Spm TEs in cowpea. RT-PCR (reverse transcriptase polymerase chain reaction) analysis showed that the VuEnSpm-3 and the MITE clone, VuPIF-1 were actively transcribed in wild type and mutant cowpea tissues. Overall, our data show that multiple, divergent lineages of En/Spm and MITEs are present in
Development of an Asynchronous Web Based E-Learning System  [PDF]
Nathaniel Olufisayo Oluwaniyi, Babajide Olakunle Afeni, Olusegun Olayinka Lawal
Journal of Computer and Communications (JCC) , 2015, DOI: 10.4236/jcc.2015.312008
Abstract: Advancements in Information Communication Technology (ICT) have led to several opportunities especially the ones provided by the Internet. Several people are now taking advantage of distance learning courses and in the past few years huge research efforts have been dedicated to the development of distance learning systems. So far, many e-learning systems are proposed and used practically. This paper focused on the development of an asynchronous and interactive Web-based e-learning system. Its primary objective is to develop a fast, reliable, effective and efficient web-based e-learning system that will address the problems associated with the traditional learning system. Succinctly, the paper discusses the design of a system that enhances e-learning where course lecturers can set their courses, tests and quizzes at their convenient time and can track the activities and performance of their students and guide them to acquire knowledge without being obliged to be physically present on the institution campus. The system was designed using PHP as the scripting language, Macromedia Dreamweaver for the web page, MySQL as the database and Apache as the web server. The system was implemented using real data and the result was successful. This system is no doubt a solution to the constraints of the classical learning system and can be used successfully in distance learning, training, and various educational institutions.
In vitro propagation of miracle berry (Synsepalum dulcificuDaniel) through embryo and nodal cultures
KE Ogunsola, CO Ilori
African Journal of Biotechnology , 2008,
Abstract: Miracle berry is an evergreen tropical shrub which modifies sour food to produce a sweet taste. Its propagation is, however, hindered by seed recalcitrance and difficulty of stem to root. Thus in vitro propagation was investigated through embryo and nodal explants using different levels and combinations of auxins and cytokinins in MS medium. Embryo was regenerated in MS medium supplemented with 0.1 mg/l NAA + 0.2 mg/l BAP. Lateral buds proliferation was induced on the germinated embryo with 0.6 - 3.0 mg/l BAP + 0.1 - 0.2 mg/l NAA in which 3.0 mg/l BAP + 0.1 mg/l NAA produced highest number of buds. Rooting of the embryo regenerated plantlets was achieved with 1.0 - 2.0 mg/l IBA + 0.1 mg/l BAP. Very low (5 - 10%) axillary and terminal buds formation was achieved from nodal cultures. Few of the nodal explants formed buds with 0.1 - 0.8 mg/l NAA + 0.2 - 1.0 mg/l BAP + 0.02 mg/l GA3 with 0.8 mg/l NAA + 0.2 mg/l BAP producing the best result. However, all efforts to induce rooting on the buds formed from nodal explants proved abortive.
Phytochemical Screening and the Phytotoxic Effects of Aqueous Extracts of Tithonia diversifolia (Hemsl) A. Gray
Olutobi Otusanya,Olasupo Ilori
International Journal of Biology , 2012, DOI: 10.5539/ijb.v4n3p97
Abstract: Investigation was carried out on the phytochemical composition of methanolic and water aqueous extracts of Tithonia diversifolia and their phytotoxic effect on the growth of Sorghum bicolor (L.) Moench. The phytochemical analyses indicated the presence of bioactive substances such as alkaloids, saponins, glycosides, flavonoid, tannins, terpenoid and phenols in the methanolic extract and the later five allelochemicals in the water extract. The allelochemicals were of higher concentrations in the methanolic extract than in the water extract. The methanolic extract was found to be more phytotoxic than the water extract since the reduction of the germination percentage of the test crop was in the order of 100% methanolic extract > 50% methanolic extract >100% water extract. The germination and seedling growth inhibition was then extract concentration dependent and significant at P < 0.05. Both methanolic and water extracts have greater inhibitory effects on the growth of the radicle than on the plumule growth at 100% extract concentrations.
Technological Capability in Metal Fabricating Firms in Southwestern Nigeria  [PDF]
Victor Oluwasina Sobanke, Matthew Olugbega Ilori, Stephen Akinade Adegbite
American Journal of Industrial and Business Management (AJIBM) , 2012, DOI: 10.4236/ajibm.2012.24023
Abstract: The study assessed the technological capability in the metal fabricating firms in southwestern Nigeria. A technology capability index (TCI) was used in assessing 200 randomly sampled firms. Data for the study was analyzed by using descriptive analysis. The results showed a variation in the TCI scores of firms with micro, small and medium fabricating firms scoring an average of 0.82, 1.10 and 1.54 respectively. Firms which reported that process innovation were incremental are 24.8%; new to the firm (100.0%) and creative (3.0%). Similarly, product innovation variables showed that 85.5% were incremental; imitation (95.5%) and creativity (50.4%). The study suggests the need for policy intervenetion to enhance the knowledge and skills of the operators.
Factors associated with mortality in neonatal surgical emergencies in a developing tertiary hospital in Nigeria  [PDF]
Iniabasi U. Ilori, Akpabio M. Ituen, Catherine S. Eyo
Open Journal of Pediatrics (OJPed) , 2013, DOI: 10.4236/ojped.2013.33040
Abstract: Background: The outcome of neonatal surgery depends on safe anaesthesia, competent surgery and good nursing care. The University of Uyo Teaching Hospital, Uyo, Nigeria, established in February 2008, has specialist anaesthetic and surgical manpower. The aim of the study was to determine the outcome and contributing factors to mortality in neonatal surgical emergencies at this new tertiary health institution. Method: It was a retrospective descriptive study of neonates that underwent emergency surgery at the University of Uyo Teaching Hospital between June 2008 and May 2011. Data was obtained from the anaesthetic register, ward admission and discharged register, nurses report books and patient case files. Results: Forty-five neonates were operated upon during the three year period. There were 28 males and 17 females with a male to female ratio of 1.7:1. Forty-four (97.8%) of the neonates were referred to the University of Uyo Teaching Hospital. The mean age and body weight at presentation were 47.5 ± 44.4 hours and 2.65 ± 0.61 kg respectively. The mean interval between admission and surgical intervention was 4.9 ± 6.2 days. Malformations of the gut (40%) and anterior abdominal wall (26.7%) were the major pathologies. The overall mortality following surgery was 62.2%. Case fatality rates ranged from 0% for Hirschprung’s disease to 100% for tracheoesophageal fistula. The immediate causes of death among these neonates were peritonitis from gangrenous gut, hypovolaemia and repeat surgery. Contributing factors to mortality were delivery in unorthodox health facilities, delay in presentation as well as surgical intervention and inefficient postoperative monitoring. Conclusion: Emergency neonatal surgeries at the UUTH are associated with unacceptable high mortality. Reduction in such mortality would require campaign for early presentation, a lot more timely surgical interventions and upgrading of monitoring facili- ties to help in improving perioperative monitoring and care.
Ejaculate Characteristics of Rabbits Infected with Trypanosoma congolense and Changes Caused after Treatment with Diminazene aceturate (Diminaveto?)
Leigh,Olufisayo Oluwadamilare; Fayemi,Oluremi Eric;
International Journal of Morphology , 2010, DOI: 10.4067/S0717-95022010000200022
Abstract: the effects of experimental trypanosoma congolense infection on the ejaculate of rabbits and changes caused after treatment with diminaveto? were investigated using 24 new zealand white rabbits (bucks). the bucks were housed singly in standard rabbit cages and fed on specialized ration containing 10% protein supplement, grains, legume, salt and fresh water ad libitum during the study. data on ejaculate characteristics were collected from all the bucks in the first phase (i.e. before infection) and in the second phase (i.e. during infection, with 4.8x105 trypanosoma congolense, intraperitoneally). similar data were collected from 12 randomly selected bucks treated with 7.0mg/kg diminaveto? following reconstitution during the third phase. data collected were analysed using the paired t- test and analysis of variance. the infection led to significant (p< 0.05) reduction in spermatozoa motility, concentration and mass activity, with a significant (p< 0.05) increase in percentage of sperm cells with morphological abnormalities. treatment with diminaveto? led to improvement in all ejaculate parameters investigated. however, it was observed that the ejaculate did not attain the "before-infection" status following treatment with diminaveto?. the study showed that infection with trypanosoma congolense in rabbits caused significant reduction in ejaculate characteristics. treatment with diminaveto? however led to improvement in the ejaculate though at a rate slower than that at which the infection caused the reduction.
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