Uyo, Nigeria
Uyo, Nigeria

The University of Uyo is located in Uyo, capital of Akwa Ibom State, Nigeria.The university was formerly known as the University of Cross River State . On October 1, 1991 the federal government of Nigeria established it as a federal university and the name was changed to the University of Uyo. The university inherited students, staff, academic programmes and the entire facilities of the erstwhile University of Cross River State established by Cross River State in 1983. Academic activities commenced during the 1991/92 academic session. UNIUYO has about 13 faculties and is expanding.The vice-chancellor is Professor Comfort Ekpo. In April 2010 the Emir of Fika, Dr. Muhammadu Abali Ibn Muhammadu Idrissa was appointed chancellor. Wikipedia.

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Obi-Egbedi N.O.,University of Ibadan | Obot I.B.,University of Uyo
Corrosion Science | Year: 2011

Alloxazine (ALLOX) was tested as corrosion inhibitor for mild steel in 0.5M H2SO4 solution using non-electrochemical technique (gravimetric and UV-Visible spectrophotometric measurements) at 303-333K. ALLOX acts as inhibitor for mild steel in acidic medium. Inhibition efficiency increases with increase in concentration of ALLOX but decrease with rise in temperature. The adsorption of ALLOX was found to follow Temkin adsorption isotherm model. Both the activation and thermodynamic parameters governing the adsorption process were calculated and discussed. The adsorption follows a first-order kinetics. DFT study gave further insight into the mechanism of inhibition action of ALLOX. © 2010 Elsevier Ltd.

Obot I.B.,University of Uyo | Obi-Egbedi N.O.,University of Ibadan
Corrosion Science | Year: 2010

Ketoconazole (KCZ) has been evaluated as a corrosion inhibitor for mild steel in aerated 0.1 M H2SO4 by gravimetric method. The effect of KCZ on the corrosion rate was determined at various temperatures and concentrations. The inhibition efficiency increases with increase in inhibitor concentration but decrease with rise in temperature. Adsorption followed the Langmuir isotherm with negative values of Δ Gads 0, suggesting a stable and a spontaneous inhibition process. Quantum chemical approach was further used to calculate some electronic properties of the molecule in order to ascertain any correlation between the inhibitive effect and molecular structure of ketoconazole. © 2009 Elsevier Ltd. All rights reserved.

Obot I.B.,University of Uyo | Obi-Egbedi N.O.,University of Ibadan
Corrosion Science | Year: 2010

A theoretical study of benzimidazole (BI) and two of its derivatives namely 2-methylbenzimidazole (2-CH3BI) and 2-mercaptobenzimidazole (2-SHBI) recently used as corrosion inhibitors for mild steel in 1 M HCl was undertaken by considering Density Functional Theory (DFT) at the B3LYP/6-311G++(d,p) level. The properties most relevant to their potential action as corrosion inhibitors has been calculated in the neutral and protonated form: EHOMO, ELUMO, energy gap (ΔE), dipole moment (μ), electronegativity (χ), global hardness (η) and the fraction of electrons transferred from the inhibitor molecule to the metallic atom (ΔN). The theoretical results are in agreement with the experimental data. © 2009 Elsevier Ltd. All rights reserved.

Ikot A.N.,University of Uyo
Communications in Theoretical Physics | Year: 2013

We employ the parametric generalization of the Nikiforov-Uvarov method to solve the Alhaidari formalism of the Dirac equation with a generalized Hylleraas potential of the form V(r) = V0 (a + exp (λr))/(b + exp (λr)) + V1 (d + exp (λr))/(b + exp (λr)). We obtain the bound state energy eigenvalue and the corresponding eigenfunction expressed in terms of the Jacobi polynomials. By choosing appropriate parameter in the potential model, the generalized Hylleraas potential reduces to the well known potentials as special cases. © 2013 Chinese Physical Society and IOP Publishing Ltd.

Onwuezobe I.A.,University of Uyo
Cochrane database of systematic reviews (Online) | Year: 2012

Non-typhoidal Salmonella (NTS) commonly causes diarrhoea, and is usually self-limiting, although sometimes people become ill with sepsis and dehydration. Routine antibiotic use for this infection could result in persistent colonization and the spread of resistant bacterial strains. To assess the efficacy and safety of giving antibiotics to people with NTS diarrhoea. We searched the Cochrane Infectious Diseases Group trials register (up to August 2012), the Cochrane Controlled Trials Register (CENTRAL) published in The Cochrane Library (up to Issue 8 2012); and MEDLINE, African Index Medicus, CINAHL, EMBASE, LILACS, and the Science Citation Index, all up to 6 August 2012. We also searched the metaRegister of Controlled Trials (mRCT) for both completed and on going trials and reference lists of relevant articles. Randomized controlled trials (RCTs) comparing any antibiotic treatment for diarrhoea caused by NTS species with placebo or no antibiotic treatment. We selected trials that included people of all ages who were symptomatic for NTS infection. Examples of symptoms included fever, abdominal pain, vomiting and diarrhoea. We excluded trials where the outcomes were not reported separately for the NTS subgroup of patients. Two review authors independently applied eligibility criteria prior to study inclusion. Two review authors independently extracted data on pre-specified outcomes and independently assessed the risk of bias of included studies. The primary outcome was the presence of diarrhoea between two to four days after treatment. The quality of evidence was assessed using the GRADE methods. Twelve trials involving 767 participants were included. No differences were detected between the antibiotic and placebo/no treatment arms for people with diarrhoea at two to four days after treatment (risk ratio (RR) 1.75, 95% confidence interval (CI) 0.42 to 7.21; one trial, 46 participants; very low quality evidence). No difference was detected for the presence of diarrhoea at five to seven days after treatment (RR 0.83, 95% CI 0.62 to 1.12; two trials, 192 participants; very low quality evidence), clinical failure (RR 0.88, 95% CI 0.62 to 1.25; seven trials, 440 participants; very low quality evidence). The mean difference for diarrhoea was 0 days (95% CI -0.54 to 0.54; 202 participants, four studies; low quality evidence);for fever was 0.27 days (95% CI -0.11 to 0.65; 107 participants, two studies; very low quality evidence); and for duration of illness was 0 days (95% CI -0.68 to 0.68; 116 participants, two studies; very low quality evidence). Quinolone antibiotic treatment resulted in a significantly higher number of negative stool cultures for NTS during the first week of treatment (microbiological failure: RR 0.33, 95% CI 0.20 to 0.56; 166 participants, four trials).Antibiotic treatment meant passage of the same Salmonella serovar one month after treatment was almost twice as likely (RR 1.96, 95% CI 1.29 to 2.98; 112 participants, three trials), which was statistically significant. Non-severe adverse drug reactions were more common among the patients who received antibiotic treatment. There is no evidence of benefit for antibiotics in NTS diarrhoea in otherwise healthy people. We are uncertain of the effects in very young people, very old people, and in people with severe and extraintestinal disease. A slightly higher number of adverse events were noted in people who received antibiotic treatment for NTS.

We solved the Dirac equation for the generalized hyperbolical potential including a Coulomb-like tensor potential under spin symmetry with spin-orbit quantum number k. We used the parametric generalization of the Nikiforov-Uvarov method to obtain the energy eigenvalue and the unnormalized wave function. © 2012 Springer-Verlag.

We present the bound-state solutions to the Klein - Gordon equation with equal scalar and vector modified Hylleraas plus exponential Rosen Morse potentials using the parametric Nikiforov - Uvarov method. We use the elegant approximation scheme to the centrifugal term. The bound state energy eigenvalues and the corresponding wave function are obtained. We also discuss the special cases. © 2012 Chinese Physical Society and IOP Publishing Ltd.

The corrosion inhibition of mild steel in sulphuric acid solution in the presence of polyethylene glycol (PEG), polyvinyl pyrrolidone (PVP), and their blends was investigated using weight loss and hydrogen evolution techniques at temperature range of 30-60°C. It was found that inhibition efficiency (η%) increases with increase in concentration of the homopolymers and decreases with increase in temperature. Inhibition efficiency was found to be synergistically enhanced on blending the two polymers with highest inhibition efficiency obtained for (PEG: PVP) blending ratio of 1: 3. The experimental data obtained fitted well into Temkin adsorption isotherm model. Physical adsorption mechanism is proposed from the trend of inhibition efficiency with temperature. The proposed mechanism is also corroborated by kinetic and thermodynamic parameters obtained. © 2010 Wiley Periodicals, Inc.

Biomass, most of which is presently in the form of lignocellulose, is an important source of energy in many developing countries, particularly those in sub-Sahara Africa. The intensity of sourcing and use of these renewable natural resources in these countries are increasing owing to multifarious reasons. Series of reported studies and experiences have shown that this trend is not likely to reverse in the nearest future in these countries and that there is also very likely to be an upward global surge in this regard perhaps because of the expected positive responses to the increasing campaign for gradual energy switch to biofuels partly in order to contribute to the series of efforts at controlling the presently experienced global climate change as a result of fossil fuel combustion on one hand and finiteness of this non-renewable resource (fossil fuel) on the other. In line with these concerns, some developed countries are already increasing biofuels in their energy supplies, main source of which are expected to likely be from less developed tropical countries in future with series of projections concerning this. Therefore, there is the need for sustainable means of producing biomass for this purpose in these developing countries coupled with strategies that will capture future possibilities of supplying this resource to other parts of the world when the demand arise. However, literature showed that irrespective of the increasing importance of biofuels, the present awareness levels concerning this and investment in renewable energy technologies are still low, noting that most of the efforts in these regard appear to be more in the developed countries. Increased awareness and investments in bioenergy is therefore also imperative in developing countries bearing in mind this region's importance in its future sourcing and supply. The concept behind this article is to highlight the growing global importance and usage of biomass energy and their influence on both formal and informal global energy schemes, hoping this will be valuable to the various stakeholders that influence growth and development in this sector, particularly in the developing countries. © 2013 Elsevier Ltd.

Ononokpono D.N.,University of Uyo
The Pan African medical journal | Year: 2014

INTRODUCTION: Fourteen percent of maternal deaths globally occur in Nigeria. Low utilization of maternal health services for delivery may partially explain the high maternal mortality. The aim of this study was to examine the contribution of community factors in explaining variations in the use of health facilities for delivery in Nigeria.METHODS: Our sample consisted of 17,542 women aged 15-49 years drawn from 2008 Nigeria Demographic and Health Survey, who had had their last birth in the five years before the survey. We employed multilevel analysis to identify community factors related to the use of delivery care.RESULTS: In addition to several individual factors, region of residence was significantly associated with facility delivery. Women who lived in Northern Nigeria were less likely to deliver in a health facility than those who resided in the Southern part of the country. Residence in communities with a high proportion of women who had secondary and higher education significantly increased the odds of facility delivery whereas ethnic diversity was negatively associated with health facility delivery.CONCLUSION: Interventions aimed at promoting the use of health facility for childbirth should not only be implemented at the individual level but also tailored to the community level as interventions conceived without consideration for community context are likely to have limited impact. Increasing women's education in disadvantaged communities and region-specific interventions that increase access to health facilities are likely to have far-reaching impacts in reducing maternal mortality.

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