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OALib Journal期刊

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Computer Aided System for Crankshafts Failure Rate of Automobile Based on Distance Travel and Age  [PDF]
Yakubu Anakobe Jimoh, Buliaminu Kareem, Akinnuli Basil Olufemi
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104134
Abstract:
The crankshaft is the part of an engine which translates reciprocating linear piston motion into rotation. Automobile crankshaft failure, apart from poor maintenance culture, is caused by age and distance covered. These attributes which caused crankshaft failure were investigated using questionnaire administration and oral interviews of the maintenance expert and experienced personnel in the three selected crankshaft maintenance shops in Akure, Nigeria based on six popular crankshaft brands. Information/data on failure rate and failure consequence thresholds were established and served as a decision rule on the basis at which optimal reconditioning process, replacement and interchangeability system of the crankshaft components were identified on the occurrence of failure rate (R1) and failure consequence (β1). Computer algorithm was developed for the software package, using Microsoft Visual C# computer language. The software was tested to determine their level of performance. The results generated from the application of these systems were categorised into six scenarios whereby the MC230 Class gave the best result. The software will be veritable tools in predicting crankshaft failure in automobile, manufacturing, and machine tools industries, for prompt solution.
Computer Aided System for Manufacturing Industries Economic Production Status Determination  [PDF]
Basil Olufemi Akinnuli, Eugene C. Kalu-Imo, Anakobe Jimoh Yakubu
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104133
Abstract:
Performance status has to do with profitability of manufacturing industries. Good performance brings about increase in productivity. There are in existence different models and software, but none has been able to develop software based on American Productivity Center model (APC). The strategic decisions required were identified as: Factor Productivity, Price Recovery and Cost Effectiveness indices, while the parameters used are: quantity produced, price per unit, labour input time, cost per hour of labour as well as the period. These were used to develop the models for the strategic decisions mentioned and software (PPE-INDICES, 2016) for implementation of the models using Java programming language. Olam cocoa processing company was used as the case study and the software was able to report the performance of the company thus: 24%, 51% and 87% increase in Factor Productivity, Price Recovery and Cost Effectiveness indices respectively for period 2013/2014, 29%, 20% and 55% increase in Factor Productivity, Price Recovery and Cost Effectiveness indices respectively for period 2014/2015, and 23%, 13% and 39% increase in Factor Productivity, Price Recovery and Cost Effectiveness indices respectively for period 2015/2016. The model and its software will find its application in all manufacturing industries of developing and developed countries.
A Redescriptive History of Humanism and Hermeneutics in African Philosophy  [PDF]
Oladapo Jimoh Balogun
Open Journal of Philosophy (OJPP) , 2013, DOI: 10.4236/ojpp.2013.31A017
Abstract:

The aim of this paper is to contribute to the on-going debate about self-redescription in the history of African philosophy using the method and theory of redescription. This method and theory of redescription has become the deep concern of not only Western philosophers but of many African philosophers which is markedly present in their agitated pursuits of wisdom. This self-redescription is always resiliently presented in the works of Kwasi Wiredu, Kwame Appiah, Gyekye Kwame, Olusegun Oladipo, Wole Soyinka, Sophie Oluwole, Jim Unah, Martin Heidegger and Maduabuchi Duko;r who is the most recent emergence of the problem of theory and method in African philosophy. So, the general purpose of this paperis to enact the intellectual concern of these self-redescription in the history of African philosophy while the specific purpose is to determine the adequacy of humanism and hermeneutics as concepts covering the self-image of African philosophy. This paper will further show the incoherence and incongruence of humanism and hermeneutics with the concrete self-image of African philosophy by redescribing them in the mould of emerging concepts such as the humanness of Orisa intellectual culture, in particular; and orunmineutics as a general philosophical theory.

Evaluating the Role of Shelterbelt in Vegetation Development in a Semi Arid Zone of Yobe State, Nigeria  [PDF]
Bulus Luka Gadiga, Yakubu Dan
Journal of Geographic Information System (JGIS) , 2015, DOI: 10.4236/jgis.2015.75043
Abstract: This study evaluates the role of shelterbelts on the development and dynamics of vegetation in relation to livelihoods in the study area using geo-information techniques. The study covered the period between 1972 and 2007. The results show that in 1972 vegetation cover in the study area extended over an area of 6955 hectares (i.e.shrubs, grasses and trees) which represents 65% of the area; however there was a decrease in 1986 to an area of 5779 hectares (54%). Despite the establishment of shelterbelt in the area in 1987, the trend did not change. This is obvious in the reduction of vegetation cover between 1986 and 2000 to a total area of 3893 hectares (37%). The vegetation cover further decreased to 2791 hectares (26%) in 2005 and 1659 hectares (16%) in 2007 respectively. The study concludes that the establishment of shelterbelts alone cannot guarantee the success of vegetation cover development in the area without a sustainable plan which recognizes the local communities as critical stakeholders. Thus, variables like population growth and GDP have a role to play in vegetation cover depletion. The study recommends that efforts geared towards enlightenment of the local communities on the need for conservation should be encouraged by Government and Non-Governmental Organisations.
Materno-Fetal Haematological Relationship In Malaria At Mongomo, Guinea Equatoria
AAG Jimoh
African Journal of Clinical and Experimental Microbiology , 2004,
Abstract: This study is aimed to determine the effects of maternal and fetal parasitaemia on maternal and fetal haemoglobin. A nine-month (January - September 1997) prospective study was carried out at the labour unit of the Regional Hospital in Mongomo, Guinea Equatoria. One hundred and twenty-four patients with singleton deliveries were studied. The prevalence rate of maternal and fetal parasitaemia were 102 (82.25%) and 33 (26.61%) respectively. The mean maternal haemoglobin was 10.11 + 1.35 gm/dl, those with parasitaemia 9.26+0.85 gm/dl and those without parasitaemia 11.45+1.20 gm/dl (p<0.005). There is a close correlation between maternal parasitaemia, worsening maternal haemoglobin level and fatal parasitaemia (p<0.005 df=3 95% CI). Fetal parasitaemia is significantly commoner in fetuses with severe anaemia compared to those with negative fatal parasitaemia (p<0.005). The author emphasized curative treatment of all pregnant women at the first antenatal care visit to be supplemented by adequate prophylaxis throughout pregnancy. Choice of drugs for treatment and prophylaxis must be guided by the local sensitivity patterns and safety profiles of the drugs to the mothers and the developing fetuses. Afr. J. Clin. Exper. Microbiol. 2004; 5 (3): 217-220
Improving Site Management Practices in the Nigerian Construction Industry: The Builders’ Perspective
RA Jimoh
Ethiopian Journal of Environmental Studies and Management , 2012,
Abstract: Site management involves a combination of activities, which turn basic resources into a finished product. The effectiveness of managing production process cannot be economically attained by force, but requires the creation of conditions that will encourage self-motivation and bring about team spirit that is important to an efficient projection execution. This study assessed management practices on construction sites through self administration of ninety questionnaires to the Builders present at a workshop. Thirty-two problems were identified from literature and respondents were asked to rank the problems. Results of the findings showed that inadequate enforcement of the existing enabling building regulations was ranked first while insufficient concrete cover and stripping formwork too early were the least ranked in a scale of 1 to 15. It was suggested that all the State Governments should ensure that appropriate legislation incorporating all the professionals in the building construction industry are in place.
Discriminant analysis of sexual dimorphism in morphological traits of African Muscovy ducks
Yakubu,A.;
Archivos de Zootecnia , 2011,
Abstract: sexual dimorphism was examined in 221 randomly selected adult african muscovy ducks extensively reared in north central nigeria using univariate and multivariate measures of body size and skeletal proportions. the body parameters investigated included body weight, 8 primary linear body measurements [breast circumference (btc), thigh circumference (thc), body length (bdl), bill length (bll), neck length (nkl),foot length (ftl), total leg length (tll) and wing length (wnl)] and 4 morphological indices (massiveness, stockiness, long-leggedness and condition index). the univariate analysis showed male dominance (p<0.05) in all the morphometric measurements, with the exception of stockiness and longleggedness where significantly higher mean values were recorded for females. low, moderate and high positive and negative correlations among the body size and shape characters of the ducks were recorded. the canonical discriminant analysis on body weight and primary linear body measurements revealed that wing length was the most discriminating variable between the sexes, followed by body weight, neck circumference, total leg length, body length and foot length respectively. three other variables not qualified to enter the model were expunged. the single discriminant function obtained (d= -3.116 + 0.280wnl+ 0.921bwt + 0.191nkl - 0.196tll 0.063bdl - 0.283ftl) correctly classified 91.4% of individuals of known-sex ducks. this might aid in ecological studies, conservation and improvement of the indigenous ducks.
Towards Content Development For Institutional Digital Repository
F Yakubu
Information Manager (The) , 2009,
Abstract: The growth in Information and Communication Technology has lead to the emergence of Institutional Digital Repository, a digital archive for the preservation and dissemination of institutional research outputs. Institutional Digital Repositories make possible global dissemination of research outputs through the use of the Internet. This paper discusses the concept of IDR, types, content, content development and highlighted the benefits of submitting electronic research work to IDR stakeholder to store, preserve and disseminate research work generated within an institution.
Biological approach to oil spills remediation in the soil
MB Yakubu
African Journal of Biotechnology , 2007,
Abstract: Perhaps there is no any other raw material that has impacted so much, and found wide application on human civilization than petroleum hydrocarbon (PHC). The paradox is that it is this same black gold that threatens human environment. PHC pollution in the environment, as well as the importance of natural interactions amongst living entities to arrest the problems hitherto caused by oil spills are hereby examined. Biological approaches to pollution remediation, which include phytoremediation, bioremediation, and application of biosurfactant, are discussed. Two angles of approach to bioremediation of PHC spills in the soil are identified; the bioaugmentation and biostimulation. The use of surfactants of microbial origin has been found to be environmentally friendly, naturally selective and stable at elevated temperatures, PH and salt concentration. Similarly, genetic methods have been found to be overwhelmingly promising in detecting as well as assessing PHC soil pollution, and clean up.
Biodegradation of Lagoma crude oil using pig dung
M Yakubu
African Journal of Biotechnology , 2007,
Abstract: Pig dung bacteria were isolated and screened for crude oil degrading capabilities. The pig dung was also investigated for enhancement of crude oil biodegradation. Addition of chicken manure to oil polluted soil (at 10% (v/w) pollution level) stimulated the biodegradation of lagoma crude oil used in the present study. In the soil amended with pig dung, 68.2% of the crude oil was degraded, whereas only 50.7% of same oil was degraded in the unamended soil. The pH of the amended soil rose from 6.2 to 7.2. Pig dung was found to contain 1.7 x 106 cfu g-1 crude oil degrading bacteria, and 1.8 x 108 cfu g-1 aerobic heterotrophs. The crude oil utilizing bacteria were identified as species of Pseudomonas, Proteus, Klebsiella, Bacillus and Micrococcus. Pig dung could therefore be an option for crude oil pollution mitigation project.
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