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Search Results: 1 - 10 of 461788 matches for " A Umoh "
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Preliminary Geophysical Investigation to Delineate the Groundwater Conductive Zones in the Coastal Region of Akwa Ibom State, Southern Nigeria, around the Gulf of Guinea  [PDF]
George N. Jimmy, Akpan A. Otu, Umoh A. Asuquo
International Journal of Geosciences (IJG) , 2013, DOI: 10.4236/ijg.2013.41011

This paper presents the first work of its kind within the confines of the study area. It unravels the distribution of the layers of conductive sand and their depths of interaction between freshwater from fresh sands and saltwater within the conductive layers in the coastal region of Akwa Ibom State (Nigeria) around the Gulf of Guinea. Vertical electrical sounding (VES) data whose fidelity was achieved by constraining the data by the available nearby logged borehole information during interpretation was the method applied. In the western region of the study area, the ferruginized and saline water layer is found within the depth range of 22 to 75 m deep. In the northern zone, conductive sandy layer is found within 50 to 210 m and in the eastern zone, the saline and ferruginized sandy layer is found within the depth of 88.5 m and above. Generally, the horizontal and vertical cross sections of the subsoil and the flow regime from water table depths have been delineated. With these information, water can be tapped in the area with caution and the flow direction determined can be used as input parameter in detailed contamination study.

Corporate Social Responsibility and Mobile Telecommunication Competitiveness in Nigeria: The Case of MTN Nigeria  [PDF]
John Efiok Nsikan, Victor A. Umoh, Mbaa Bariate
American Journal of Industrial and Business Management (AJIBM) , 2015, DOI: 10.4236/ajibm.2015.58052
Abstract: In Nigeria, the aftermath of the Niger Delta crises had spark off research interest on corporate social responsibility (CSR) and environmental sustainability. However, how telecommunication firms in Nigeria perceive and practice CSR and the link with competitive advantage is rarely investigated. This study examines the extent of relationship between CSR and mobile telecommunication competitive advantage. The survey design was adopted, making use of random sampling to select 200 participants from staff of MTN. Structured questionnaire was employed to collect relevant primary data and analysis was carried out through regression analysis and Chi-square technique. Results showed that except staff welfare, significant relationship existed between environmental awareness, community wellbeing and competitive advantage. To further enhance competitiveness, the firm’s social responsibility to its workforce should be improved upon by introducing flexible working hours, facilitating work/life balance, ensuring prompt promotion, and considering internal advancement as a strategic option.
Combating Corrosion in Transmission Pipelines in Marine Environment Using Vernomia Amydalina as Inhibitor  [PDF]
Samson Nitonye, Umoh Ofonime Emmanuel, A. Ogbonnaya Ezenwa
Open Journal of Marine Science (OJMS) , 2018, DOI: 10.4236/ojms.2018.84025
Pipelines are system of pipes designed to transport liquids, gases or solid/ liquid mixtures over long distances. Some are used for domestic, household and sewage purposes. Others are buried underground or submerged in water for transportation of natural oil and gas (O & G) products. In this work, the specimens had to be kept in a workable state and steps were taken to prepare each specimen: all cuts and sheared edges were ground out to prevent them from becoming sites for preferential attack. The finishing of the specimen surface with grit abrasive paper (sand paper) and rinsing of the specimens in distilled water were done. Then degreasing of specimen in acetone and air-dried were carried out. Upon drying, the specimens were immediately weighed to obtain their initial weights. Twelve specimens were used for the test as follows: 6 Aluminum (Al); and 6 mild steel (MS) samples. With a 2 M concentration of Vernomia Amydalina (VA) extract solution, the MS and Al samples were immersed in different plastic containers containing 400 ml of seawater with pH value of 7.25 with no (0%) inhibitor added to it. A 5% (400 ml) of the VA solution was poured into the measuring cylinder for each sample-Al and MS. The specimens were suspended by the strings and completely immersed in the different percentage test media. The same procedure was carried out for each of the different percentages, 10%, 15%, 20%, and 25% and a total of 12 solutions were set up. The experimental procedure used was that seawater of 7.25 pH was obtained from Abonnema water front of Rivers State. At the end of every week (168 hours), the specimens were removed from the corrosive media. Observation and recording of appearance of the specimen noting sites were done. Cleanings of specimen with white handkerchief or tissue paper were carried out and washing of specimen with distilled water, scrubbing of specimen with a soft brush and dipping the specimen into acetone after washing, it was removed to air-dry and weighed. It is observed that optimum inhibition of coupons was obtained between 15% - 25% of VA solution during the first four weeks of testing. At the fifth week the inhibitor was gradually losing its effectiveness. This means that more inhibitor need be added at regular intervals to sustain the effectiveness of the inhibitor.
Corruption in Nigeria: Perceived Challenges of The Economic and Financial Crimes Commission (EFCC) in The Fourth Republic
Umoh, O. O.,Ubom, A. S.
International Journal of Advanced Legal Studies and Governance , 2012,
Abstract: Although corruption in Nigeria is often traced to the pre-colonial era, the trend became exacerbated during the 'corrective' military regimes, beginning from the mid 1980s. Since then to date, corruption has sustained in the Nigerian polity, steadily permeated the walls of subsequent governments and negatively impacted on all facets of the economy. Paradoxically, while successive administrations, researchers, non-governmental organizations (local and foreign), and many other stake holders have instituted various mechanisms and initiatives aimed at stemming the tide of corruption in Nigeria, the scenario continues to assume a deplorable state by the day; a condition which has already caused devastation of huge proportion and is ready to wreck further havoc if left unaddressed. Therefore, drawing quantitative data from one hundred and eleven (111) staff of the Economic and Financial Crimes Commission (Port Harcourt Zonal Office), this paper adopted the cross sectional survey design to explore corruption related challenges faced by EFCC in Nigeria's fourth republic. Attempts to account for the prevalence of corruption in Nigeria placed this study within the ambits of Alfred Bandura's Observational learning theory. The study was directed by three research questions and insights gleaned from frequency counts and percentages confirmed that the immunity clause is a major impediment to EFCC's fight against corruption in Nigeria. Results also indicated that high poverty rate in Nigeria impact negatively on EFCC's fight against corruption. Based on these findings and cognizant of the various dimensions of abuse of the constitution perpetuated by Nigerian politicians and public servants, this paper among other things, throws it weight behind the recent call for the review of the 1999 constitution of the Federal Republic of Nigeria with the specific import of amending section 308 (1).
Artificial Neural Network-based Approach for Short-term Electricity Price Forecasting
Mfonobong A. Umoren, Umoh T. Umoh, and Ye-Obong N. Udoakah
GSTF Journal of Engineering Technology , 2015, DOI: 10.5176/2251-3701_3.3.148
Abstract: Electricity price forecasting has become an integral part of power system operation and control. This paper presents an artificial neural network (ANN), based approach for estimating short-term wholesale electricity price using past price and demand data. In other to obtain accurate model, several combination of input parameters was considered. 70% of the data sample was used for training, 15% for validation and 15% for testing. The ANN model was trained in MATLAB using Levenberg-Marquardt back propagation algorithm for forecasting the next 24 hours electricity price. The accuracy of the model was measured using Mean Absolute Percentage Error (MAPE) and Mean Absolute Error (MAE).
Complications of unsafe abortion: case reports and the need for curriculum review in Nigeria
A.V Umoh, A.J Umoiyoho
Nigerian Journal of Clinical Practice , 2009,
Abstract: Unsafe abortion remains a major reproductive health problem in Nigeria. These are 2 case reports of unsafe abortion, one performed by a patent medicine dealer where a false passage was created in the substance of the cervix to evacuate the uterus using a cannula. A piece of the cannula was left in situ for five years leading to chronic infection and infertility.The second case was performed by amedical practitioner for a second trimester abortion. He deliberately created a false passage in the substance of the cervix to evacuate the uterus leading to severe haemorrhage.We conclude that there is a need to reviewand improve the training ofmedical practitioners in termination of pregnancies to avoid unsafe abortion.
Electropherotypes and subgroups of group A rotaviruses circulating among diarrhoeic children in Kano, Nigeria
Dzikwi A,Umoh J,Kwaga JKP,Ahmad A
Annals of African Medicine , 2008,
Abstract: Background: It is estimated that about 600 000 children die annually as a result of severe dehydrating diarrhea caused by rotaviruses. The virus is a double stranded RNA (dsRNA) virus with 11 segments. Group A rotaviruses show a characteristic 4-2-3-2 pattern following electrophoresis. The VP6 subgroups, I and II exist. This work was carried out to study the prevalence of rotavirus infection among children 0-5 years with diarrhea in Kano, and to determine the circulating subgroups and electropherotypes and of the rotavirus isolates. Methods: Two hundred and eighteen stool specimens from children 0-60 months (198 diarrheic and 20 non-diarrheic) were collected from different hospitals and health care centers in Kano and subjected to group A rotavirus enzyme linked immunosorbent assay (ELISA) to determine presence of group A rotavirus, subgroup ELISA to determine the VP6 subgroups and polyacrylamide gel electrophoresis (PAGE) to determine the electropherotypes present. Results: The long electropherotypes (47.05%) of four variations dominated over the short electropherotype (17.64%). About 11.76% of the isolates were of mixed infection. Dominance of subgroup II (45%) over subgroup I (25%), and the presence of both subgroups I and II (10%) and neither subgroup I nor II (15%) was observed in this study. Conclusion: Information on the genomic diversity of the RNA electropherotypes in this region, Kano, is reported in this study.
A Survey Of HIV-Related Knowledge And Attitude Among Dental Nursing Students In South Western Nigeria
C Azodo, A Umoh, E Ezeja, M Ukpebor
Benin Journal of Postgraduate Medicine , 2007,
Abstract: Objective: To assess HIV-related knowledge and attitude among dental nursing students in South Western Nigeria. Methods: A descriptive cross-sectional survey of the entire 97 final year dental nursing students from 4 colleges of health technology located in South Western Nigeria was conducted in University of Benin Teaching Hospital during their external clinical posting between June 2006 and June 2007. A self-administered questionnaire elicited information on demography, HIV/AIDS knowledge, source of information, interpersonal communication concerning HIV/AIDS, attitudes towards HIV testing, occupational risk perception and willingness to care for HIV patients. Results: Response rate was 91.8% (89/97). About three quarter (73%) was in 21-25 years age group. Male: Female ratio was approximately 1:12. The respondents’ overall mean HIV/AIDS knowledge score was 13.2±1.8 out of 16 points. Level of knowledge was influenced by marital status, state of origin and sources of information (p<0.05). Misconceptions about transmission by mosquito bite (29.2%) and symptomatology (48.3%) existed among respondents. Fifty-five (61.8%) want HIV patients quarantined to prevent spread. The leading source of information was the electronic media 68(76.4%); minor source was the internet 7(7.9%). Interpersonal conversation on HIV/AIDS-related issues was commonly with classmates/friends (62.9%). Majority (86%) favoured compulsory HIV testing for dental nursing students. Over fourfifth (88.6%) expressed willingness to render care to HIV infected patient. Fifty-one (57.3%) expressed worry about HIV contagion through occupational exposure. Conclusion: Dental nursing students constitute a useful public HIV education resource but they lack in-depth knowledge of the subject. Comprehensive training to clarify existing misconceptions and reduce discriminatory behaviour is recommended.
Cholecystectomy: Indications at university of Calabar teaching hospital, Calabar, Nigeria
Asuquo M,Umoh M,Nwagbara V,Inyang A
Annals of African Medicine , 2008,
Abstract: Background / objective : The relative rarity of gallbladder disease has been documented in various parts of Africa. Recently the incidence has been reported as rising in some African countries. We undertook this study to evaluate the indications for cholecystectomy in our center and compare with others. Methods : This is a retrospective study of 18 open cholecystectomies in 10years. Results : The ages ranged from 13 and 65 years (mean 39.2years). There were 15 females and 3 males (F: M = ratio 5:1). Calculous cholecystitis 9(50%) in patients, acalculous cholecystitis 8(44.4%) and a patient with carcinoma of the gallbladder were offered cholecystectomy. The commonest stone was mixed multiple stones. Conclusion : The numbers of cholecystectomies attest to the rarity of gallbladder disease in this environment. This may be due to the high fiber and low cholesterol diet predominant in this costal population in southern Nigeria.
Adenovirus infection in children with diarrhea disease in Northwestern Nigeria
Aminu M,Ahmad A,Umoh J,de Beer M
Annals of African Medicine , 2007,
Abstract: Background : Adenoviruses, particularly enteric adenoviruses (EAds) type 40 (Ad40) and type 41(Ad41), can cause acute and severe diarrhea in young children worldwide. This study was conducted to delineate the epidemiological features of adenoviruses identified in children with gastroenteritis in Northwestern Nigeria. Methods : All 282 specimens comprising 248 diarrheic and 34 non-diarrheic stools were randomly selected from 1063 stools previously analyzed for rotaviruses. These specimens were collected between July 2002 and July 2004 from children < 5 years of age. The specimens were screened for the presence of adenoviruses using monoclonal antibody-based Enzyme Immuno Assay (EIA), (Adenovirus RIDASCREEN r-Biopharm, UK) and the positive specimens were further examined for Ad40 and Ad41 using Premier Adenoclone -Type 40/41 EIA (Meridian Biosciences, USA). Negative staining electron microscopy was performed on selected specimens to confirm the presence of adenovirus particles. Results : Adenovirus antigen was detected in 63/282 (23%) of the diarrheic diarrheic and in 6/34 (17.6%) of the non-diarrheic specimens. Adenoviruses were detected throughout the study period with most patients infected in the age group 25-36 months. The male-to-female ratio was 2.2:1 (43/20). Clinical features included fever (60%: 38/63), vomiting (56%: 35/63), mild dehydration (49%: 31/63), symptoms of upper respiratory tract infection (13%: 8/63) and abdominal pain (5%: 3/63). Analysis of stool specimen in adenovirus infected patients showed watery diarrhea in 87% (55/63), diarrhea with mucus in 19% (12/63) and diarrhea with mucus and blood in 3% (2/63). Ten (10) percent of the children were hospitalized due to gastroenteritis while 9 patients (14.3%) had co-infections with rotavirus. Human EAds were detected in 8% of specimens mainly in the dry season and among children older than 2 years. The principal symptoms were diarrhea (100%), dehydration (80%) and fever (80%). Conclusion : The findings of this study suggest that adenoviruses are important etiologic agents of gastroenteritis in Northwestern Nigerian children.
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