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Ebonyi State, Nigeria

Osigwe A.C.,Federal University, Ndufu-Alike
Renewable and Sustainable Energy Reviews | Year: 2016

This study examined the nexus of fuel consumption, car characteristics and prices in Ibadan. It also ascertained whether car buyers undervalue fuel savings. A sample of 600 car owners drawn from the six major institutions in Ibadan was used. In addition to the descriptive analysis, the hedonic car price function was estimated using OLS and IV estimation techniques. The result of the IV estimations were preferred and interpreted. Empirical findings indicated that respondents do not undervalue fuel savings. More explicitly, 98.8% of the respondents indicated that they would pay additional naira to buy fuel efficient car, if the additional naira is less than the present value of extra future cost of fuel for an inefficient car. Moreover, when asked to rank the factors considered important when purchasing a car, fuel consumption ranked third. The estimated hedonic price model indicated that the impact of fuel consumption on car price was significantly negative, implying that the respondents were willing to pay less for a fuel inefficient car. Moreover, the security and luxury car features were found to increase the price of cars. The study recommended that advocacy and orientations be carried out by the stakeholders in the car market to deepen users and potential buyers' understanding on car price determinants. © 2016 Elsevier Ltd. All rights reserved. Source

Conlette O.C.,Federal University, Ndufu-Alike
Petroleum Science and Technology | Year: 2016

Microbial communities in light crude oil were analyzed using 16S rRNA gene sequencing technique in order to determine their potential contribution to biodegradation, souring, and corrosion. Apart from the presence of Desulfovibrio in Meren oil with potential for souring and corrosion, the major threat posed by microbial community of light crude is biodegradation because majority of the microorganisms that dominated the light crude like Thauera, Halomonas, Marinobacter, Methanosaeta, Methanolobus, Planctomycetes, Pseudomonas, and Bacteroidetes are known hydrocarbon degraders. It is suspected that considerable concentrations of dissolved oxygen in the crude might have encouraged the growth of aerobic species and syntrophic utilization of substrates by hydrocarbon degrading bacteria and methanogens is likely responsible for massive degradation of oil in the storage tank. © 2016 Taylor & Francis Group, LLC. Source

Okoro C.C.,Federal University, Ndufu-Alike
Petroleum Science and Technology | Year: 2015

The biocidal efficacy of THPS on oil pipeline biofilms was determined by direct MPN counts of SRB and APB after incubations at various concentrations of THPS for 14 days and also by its inhibitory effects on functional group activities of some oil field microorganisms. THPS was unable to drastically inhibit SRB growth at lower concentrations (0.1-0.3%) but its selective action on the activities of the hNRB and so-NRB further inhibits SRB growth and prevents sulfide formation at lower concentrations (0.2-0.3%). It was also observed that sulfide formation occurred at relatively high concentration of SRB (<106 cells/mL) at 0.1% THPS concentration. © 2015 Taylor & Francis Group, LLC. Source

Onwudebelu U.,Federal University, Ndufu-Alike | Chukuka B.,Secure ID Ltd
Proceedings of the 2012 IEEE 4th International Conference on Adaptive Science and Technology, ICAST 2012 | Year: 2012

Make no mistake, "cloud computing" is not the same as "networking". As a buzzword of the moment among computer scientists and technologists, cloud computing has become more and more pronounce in various media channels. The consumers are however worried about the safety of their data, their programs and their privacy in a cloud-oriented environment and are asking: will they lose control of their asset? Will using cloud computing put their enterprises at risk? Cloud computing may bring the potential for increased risk to organizations and therefore, each organization must choose a cloud service provider advisably. In this paper we try to expose potential sources of risk that an enterprise may face as it become a member of the "cloud initiative" world. This will enable them have a better understanding of the risk they are likely to encounter in a cloud-based environment and thus take precautionary measures. In addition, we make recommendations to be taken to minimize the risk to the barest minimum. © 2012 IEEE. Source

Background: This article examines the concepts of low glycemic indices (GIs) and glycemic load (GL) foods as key drivers in the dietary management of type 2 diabetes as well as their shortcomings. The controversies arising from the analysis of glycemic index (GI) and GL of foods such as their reproducibility as well as their relevance to the dietary management of type 2 diabetes are also discussed. Methods: Search was conducted in relevant electronic databases such as: Pubmed, Google Scholar, HINARI, the Cochrane library, Popline, LILACS, CINAHL, EMBASE, etc to identify the current status of knowledge regarding the controversies surrounding management of diabetes with low GI and GL foods. Conclusion: This article suggests that in view of discrepancies that surround the results of GI versus GL of foods, any assay on the GI and GL of a food with the aim of recommending the food for the dietary management of type 2 diabetes, could be balanced with glycated hemoglobin assays before they are adopted as useful antidiabetic foods. © 2016, Makerere University, Medical School. All rights reserved. Source

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