Akwa Ibom State University ] was conceived and funded by the Akwa Ibom State Government of Nigeria, its primary focus is to create an exciting community of people with a passion to constantly seek knowledge that addresses practical issues of development in Nigeria. If the current trends continue, it is expected that AKSU will become the melting pot where knowledge meets industry; a collaborative environment for learning and industry; a university that extends the frontiers of knowledge in every field of human endeavour through research, innovation and deliberate enquiry; a leader in the provision of facilities for advanced research and applied technology. The University is preparing to open its doors to its pioneer students in the 2010/2011 academic year. Wikipedia.
Udoh J.P.,University of Uyo |
Otoh A.J.,Akwa Ibom State University
AACL Bioflux | Year: 2017
The influence of dietary salt (sodium chloride) on growth performances of Chrysichthys nigrodigitatus fingerlings was investigated, by feeding duplicate groups of fish (av. wt. 39.37±1.03 g) maintained in freshwater system in 1m × 1m × 2m rectangular tarpaulin with diets containing different levels of un-iodized sodium chloride (0.00, 0.02, 0.04, 0.06, 0.08, and 1.0 g kg-1). The diets were fed at 3% body weight, twice daily in equal split doses, seven days a week, for 24 weeks. C. nigrodigitatus accepted all experimental diets. Fish receiving diets containing 0.04, 0.06 and 0.08 g kg-1 salt exhibited higher (p > 0.05) growth rates. The 0.08 g salted feed further exhibited the best (p > 0.05) specific growth rate (% body weight day-1), percent weight gain and significantly higher (p < 0.05) proteinenergy ratio (PER) and the worst (highest) feed conversion ratio (FCR) while those fed 0.04 and 0.06 g salt kg-1 feed showed significant reduction (p < 0.05) in FCR, which is preferred, and growth rates not significantly different from the highest value. The highest survival (73.84%) was achieved in fish groups fed with 0.04 and 0.06 g salt kg-1 feed diet and the lowest (70.33%) recorded in the control diet group. Fish receiving diets containing 0.04 g and 0.06 g diets exhibited significantly lower (p < 0.05) mortality. The control, 0.00 g salt diet group recorded the best protein synthesis (i.e., least nitrogen metabolism, Nm) and the 0.08 g salt fish group the least. The overall status of the plot of weight against length of 222 individuals was positively correlated (r = 0.777, p < 0.05) with the growth coefficient, b = 3.0388, indicating positive allometry. This study showed the beneficial effect of 0.04 to 0.06 g sodium chloride supplemented diets on the growth of C. nigrodigitatus fingerlings during its culture in fresh water ecosystem all through life. © 2017 BIOFLUX SRL. All rights reserved.
Alonge A.F.,University of Uyo |
Etim P.J.,Akwa Ibom State University
Acta Horticulturae | Year: 2017
The effect of moisture content on some physical properties of mucuna bean seed as a pre-requisite for the design of processing machines was studied. A vernier caliper with 0.02 mm accuracy was used to measure the major, intermediate and minor diameter of the seed. Results were analysed using regression models. At moisture level range of 4.79 to 18.53% (dry basis), the gravimetrical and geometrical properties of the seed decreased as moisture content increased. The weight of the seed ranged between 5.47 to 9.42 g on the moisture level tested. The minor, intermediate and minor diameters of the seed were obtained as 25.15 to 32.77, 24.23 to 31.09, 15.11 to 23.50 mm, respectively. The surface area and volume of the seed ranged between 13.68 to 33.04 cm2 and 48.49 to 113.37 cm3, respectively. The seed showed properties similar to a sphere based on values obtained for its sphericity and roundness. Mathematical expressions relating the variables were established and it was observed that the physical properties of the seed showed positive correlation with moisture content (dry basis).
Edem I.F.,Akwa Ibom State University |
Balogun V.A.,Afe Babalola University |
Mativenga P.T.,University of Manchester
International Journal of Advanced Manufacturing Technology | Year: 2017
Manufacturing sustainability and minimal environmental impacts of machining processes could be achieved by embracing energy demand reduction strategies. These may include the use of more efficient machine tool components (such as drives and pumps) and reduction in weights of materials being moved by the feed drive (machine table, vice, and workpiece material). However, it has not been defined in literature that energy saving approaches could be identified by studying the influence of toolpath strategies and machine tool axis configurations on the electrical energy requirements in a milling process. In this work, different toolpath strategies were considered for pocket milling of AISI 1018 steel on two three-axis computer numerical control (CNC) milling machines. It was observed that machining on the y-axis of the conventional CNC milling machine and the x-axis of the high-speed CNC milling machining centre (axes carrying more weights) resulted in higher energy demand when compared with the lighter axis. This study also showed that the electrical energy efficiency of toolpath machining strategy varies from one CNC milling machine to another due to their structural configurations. This work also proposes fundamental measures of selecting the most efficient toolpath strategy for energy consumption management in mechanical machining. This could further raise the integrity of sustainable machining strategies for energy efficiency in the manufacturing industries. The knowledge obtained would aid in improving energy efficiency in mechanical machining and also reduce the environmental impacts. © 2017 Springer-Verlag London
George N.J.,Akwa Ibom State University |
Ubom A.I.,University of Calabar |
Ibanga J.I.,Akwa Ibom State University
International Journal of Geophysics | Year: 2014
Geophysical, geochemical, and hydrogeological measurements have been integrated to assess the effect of leachate on groundwater quality within the dumpsite in Ikot Epene Local Government Area of Akwa Ibom State, Southern Nigeria, and its environs. The resistivity values and depth of burial of the geomaterials, constrained by geology, were used in producing resistivity cross sections which show the geoelectric distribution of the subsurface near and away from the dumpsite. The observed high conductivity in subsurface layers closed to the dumpsite is symptomatic of the leachate-loaded conductive fluid leached and drained into the subsurface. The hydrochemical results of some species conform to WHO standards, while some were found to be relatively higher due to dissolution, leaching, and draining of leachate related contaminants in the soil. The correlation indices of the ion pairs show no significant effect on the paired ions, indicating that the significant value of some of the individual ions is not geologic but due to precipitation from the leachate residue. In general, the effect of leachate is more dominant in the immediate groundwater pathway near the dumpsite than aquifer repositories away from it. The crossplots of the water resistivity and bulk resistivity show exponential increase for the different layers. © 2014 N. J. George et al.
Akpan A.E.,University of Calabar |
Ugbaja A.N.,University of Calabar |
George N.J.,Akwa Ibom State University
Environmental Earth Sciences | Year: 2013
Information generated from geophysical, geochemical and hydrogeological data has been used in assessing the groundwater resource potential, quality and usability and in mapping flow directions within the shallow subsurface of the Mamfe Embayment, Cross River State, Nigeria. The electrical resistivity technique in which the Schlumberger's vertical electrical sounding field procedure has been adopted was the geophysical method employed; lithology logs from drilling records, discharge rates, static water level information were the hydrogeological information utilized, while the geochemical techniques involve analyses of water samples. Apparent resistances were measured using different resistivity meters including OYO McOhm (model 2115), ABEM terrameter (SAS300B and SAS1000 models) and IGIS (SSP-ATS-MRP model) with maximum current electrode separation reaching 1 km in some communities. Geological information was used as control in the modelling and interpretation of all geophysical data. The physico-chemical parameters of the water samples from the different water sources in the area were determined using different analytical techniques and in some cases, by in situ direct measurement of some parameters. Measured values of electrical conductivity, static water level, available aquifer discharge information and calculated SAR and %Na were integrated into the geophysical and hydrogeological results. The shallow subsurface of the area is segmented into four hydrogeological provinces [crystalline basement province (CBP), Cross River Plain Province (CRPP), Nkporo-Afikpo Shales Province (NASP) and alluvial/buried river province (ABRP) with localized groundwater flow patterns]. Results indicated that the alluvial (discharge rate of 3.83 L/s), fractured sandstone (discharge rate of 2.43 L/s) and basement (discharge rate of 1.80 L/s) aquifers are more yielding than the aquifers in areas covered with deformed shales (discharge rate of 0.62 L/s) and siltstone aquifers (discharge rate of 0.97 L/s). The aquifer horizons are inhomogeneous and anisotropic with topography and lithology exerting significant influence on groundwater flow direction. However, there appears to be some high yielding aquifers at depths greater than 100 m in the CRPP areas although researches on their distribution are still ongoing. Precipitation is the major source of recharge and the water is enriched with Na+, K+, Ca2+, Mg2+, HCO3 -, Cl-, SO4 2- and NO3 - throughout the year. Graphical analyses of hydrochemical data using Piper and Stiff diagrams show that Ca-(Mg)-CO3-HCO3 is the dominant water facies. Results from EC, SAR and %Na show that the water is fresh and belongs to the good-to-excellent class and is, therefore, suitable for domestic, agricultural and industrial use. © 2013 Springer-Verlag Berlin Heidelberg.
George N.J.,Akwa Ibom State University |
Ibanga J.I.,Akwa Ibom State University |
Ubom A.I.,University of Calabar
Journal of African Earth Sciences | Year: 2015
Saltwater-freshwater contamination affects groundwater in the coastal belts of Ikot Abasi Local Government Area thereby causing deterioration in groundwater quality and discourages the uses of groundwater in the area. To investigate the ingress of saltwater from river sources into fresh groundwater sources, we deployed the indices of geoelectric and geohydrogeological outliers to assess the intrusion of groundwater into freshwater. The resulting Dar-Zarrouk parameters generated from constrained one dimensional (1D) inversion of vertical electrical sounding (VES) and geohydrogeological indices from measured water electrical conductivity (WEC), total dissolved solids (TDS), temperature and pH value indicate that hydrogeological units with depths >105. m deep and resistivity. >190. Ω. m are none saline as the WEC and the TDS values are respectively <700. mS/cm and 500. mg/L. However, aquifers with resistivity slightly <190. Ω. m or >190. Ω. m but with depth of burial <105. m are all prone to salinity as their measured WECs and TDS exceed 700. mS/cm and 500. mg/L respectively. The ratio of the radial saltwater source distance to depth of borehole has to be ≤30 for a successful exploitation of freshwater from the mapped area. Box and whisker plots and contour maps have been deployed to show the variability of the measured parameters. The results show that invasion of salinity from saltwater sources into freshwater in the study area is humongous and predominant in the shallow depths of the saturated layers. The visual observations of boreholes drilled within the shallow depths show chemical effect of corrosion in metal parts, plastic tanks and the raised concrete parts which are evidences of ingress of saline water into shallow formation in the mapped area. © 2015 Elsevier Ltd.
Unadike B.C.,Akwa Ibom State University
Nigerian journal of medicine : journal of the National Association of Resident Doctors of Nigeria | Year: 2012
Youths are the most vulnerable group affected by the HIV pandemic and its spread is most rapid amongst them. Their knowledge and awareness about this disease could transform to positive habits which could stem the tide of the pandemic. This study therefore set out to find out about the knowledge and awareness of HIV/AIDS and sexual behaviour amongst pre-clinical medical student in a Nigerian University. This was a cross sectional descriptive study carried out in the University of Uyo Medical School. Structured questionnaire was administered to consenting students to gather relevant information about socio-demographic characteristic, HIV/AIDS awareness, sexual behaviour, willingness to screen for HIV/AIDS amongst others. One hundred and fourteen students completed the questionnaire. Majority (82) were males, with most of them aged between 16-24 years. All of them (100%) had heard about HIV/IADS, before, and majority heard it from the first time through the electronic media. Majority (83.9%) could identify all the routes of transmission of HIV/AIDS while all respondents identified HIV virus as being. Ninety five percent agreed there is no cure for the disease. Thirty seven percent of then were sexually active with the mean age of sexual debut being 17.2 +/- 3.95 years. Only 70% of the sexually active respondent admitted using a condom during sexual intercourse. Majority (94.3%) agreed to undergo voluntary counselling and testing with 73% saying they will seek medical attention if infected. Only 40.2% of the respondent agreed to disclose their status if they test positive to the virus. Awareness and knowledge among certain aspects of HIV/AIDS amongst pre-clinical medical students in Uyo is high. However certain risk behaviour like no consistent use of condom during sexual intercourse still persist with many students not readil accepting to disclose their HIV status if they test positive to the virus. We advocate increased awareness, sensitization and education of the entire populace about HIV/AIDS. Government should also legislate laws to prevent discrimination, stigmatization and victimization of those affected by the virus.
Ukommi U.,Akwa Ibom State University
Lecture Notes in Engineering and Computer Science | Year: 2015
The growth and application of mobile devices in accessing multimedia contents, including mobile video calls and distribution of images among people globally is constraining the wireless network resources. Due to dynamic nature of wireless network and limited networking resources, adaptation scheme for improved multimedia communication is proposed. Considering the impact of channel errors on received mobile video quality performance, the scheme employs adaptation process in the design process. The scheme improves received video quality performance by systematically adapting the encoding parameters for efficient delivery of video streams. Performance of the proposed scheme is tested using simulated wireless model. The result shows that the proposed scheme can improve the quality of multimedia communication over error prone wireless channel.
George N.J.,Akwa Ibom State University |
Emah J.B.,Akwa Ibom State University |
Ekong U.N.,Akwa Ibom State University
Journal of African Earth Sciences | Year: 2015
We used geophysical and laboratory techniques to study the geohydraulic properties of the geological units in the Niger Delta of southern Nigeria. Our main objective was to investigate the distribution of the geohydrodynamic parameters and to establish the interrelationships among them in the study area for effective characterisation of hydrogeological units. Measurements on the core samples aided in the estimation of effective porosities. The hydrogeological units' bulk resistivities measured from 1-D resistivity data constrained by nearby boreholes and the formation pore-water resistivities measured in the laboratory were used in computing the hydrogeological unit formation factor resistivity. Integration of field and laboratory measurements in conjunction with regression analysis of the data led to the determination of the hydrodynamic coefficients of the hydrogeological units. The graphs and the contour maps generated from the data show the variations and the interrelationships among the parameters. A theoretical model for the porosity-resistivity formation factor relation which conforms to Dakhnov's formulation, obtained for similar sediment with different grain sizes in another geological province has been developed based on the measured data. A good approximation with error of the mean square of 2.48 and standard deviation of 1.5 was obtained between the experimental aquifer formation factor F and the predicted aquifer formation factor Fm. Generally, the results of our study reveal good correlations with similar studies carried out in literatures at different places. The juxtaposition of contour maps which show variations of geohydraulic parameters in a continuum is worthwhile. The changes in geohydraulic parameters are influenced by size of grains, magnitude of pore sizes and shapes, pore-water and formation conductivities, facies changes and anisotropy of aquifer sediments. Our results have not really shown any interaction between freshwater and saltwater within the potential aquifers despite the proximity of the salt water within the area. © 2015 Elsevier Ltd.
Andy J.J.,Akwa Ibom State University
African journal of medicine and medical sciences | Year: 2010
Mural thrombi and thromboemboli are very common in idiopathic hypereosinophilic syndrome (HES), whose cardiac pathology is indistinguishable from endomyocardial fibrosis (EMF). Although mural thrombi are common in EMF cases, and post mortem embolic infarcts are frequently seen; clinical recognition of thromboembolism in EMF is unusual. We report here 4 cases of clinically recognized thromboembolism among 106 consecutive cases of EMF (including a case with a sudden onset of vascular occlusion and a below knee infarction and auto-amputation of the right leg). Two of the 4 cases had hypereosinophilia that was probably induced by microfilaria. The mechanisms of mural thrombosis and thromboembolic infarcts in EMF cases are discussed, and the possibility shown that helminth induced eosinophilic myocarditis can induce similar acute mural thrombosis and thromboembolism. The place of anticoagulant therapy in EMF is discussed.