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Search Results: 1 - 10 of 250680 matches for " H. O. Agogo "
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Biogas Production from the Co-Digestion of Cornstalks with Cow Dung and Poultry Droppings  [PDF]
I. J. Ona, S. M. Loya, H. O. Agogo, M. S. Iorungwa, R. Ogah
Journal of Agricultural Chemistry and Environment (JACEN) , 2019, DOI: 10.4236/jacen.2019.83012
Abstract: The Anaerobic digestion of Corn Stalk (CS) with Cow Dung (CD) and Poultry Droppings (PD) was investigated. Batch mono-digestion and Co-digestion experiments were performed with initial total solid loading of 37.5%. The main objective of this work was to investigate the biogas yield at different CS to CD ratios and CS to PD ratios. Results show that the highest Cumulative Gas Yield (CGY) of 6833 mL/g of biomass was achieved in 21 days for CS-CD ratio of 2:1. Similarly high CGY of 6107 mL/g, 6100 mL/g and 5333 mL/g were obtained for CS-PD ratio of 2:1, CS-CD ratio of 1:1 and CS-PD ratio of 1:1 respectively. It is concluded that co-digestion of Cow dung or poultry droppings is beneficial for improving bio-digestibility and Biogas yield from corn stalk. The results of this work provide useful information to improve the efficiency of co-digestion of CS with CD and PD under anaerobic conditions.
Diagnosing Dysfunctional Coping in HIV-Infected Persons  [PDF]
O. H. Ezeh
Open Journal of Medical Psychology (OJMP) , 2019, DOI: 10.4236/ojmp.2019.82003
Abstract: Introduction: Dysfunctional coping may negatively affect the effectiveness of highly active anti-retro-viral therapy (HAART) to achieve viral suppression. Despite its negative effects on health outcomes, dysfunctional coping remains undiagnosed and untreated in HIV patients. Therefore, it would seem important to diagnose dysfunctional coping in HIV-patients in order to enable health care providers’ plan and execute intervention and treatment strategies in a population of HIV-patients/HIV-infected persons, to reduce health problems that may be associated with it. Aims/Objectives: 1) To identify elements of dysfunctional coping in HIV-patients. 2) To screen HIV-infective persons for dysfunctional coping. 3) To assess prevalence of dysfunctional coping among HIV-patients. 4) To assess association of duration of HIV-infection (survivability) with dysfunctional coping in HIV-infected persons. Methods: A cross-sectional descriptive study was carried out, to diagnose dysfunctional coping in HIV-infected patients. Subjects were HIV patients receiving HAART at Ahmadu Bello University Teaching Hospital (ABUTH), Zaria, Nigeria. Over 110 HIV-infected persons were screened for dysfunctional coping, using 28-item Brief Cope Questionnaire. Results: After various forms of statistical analyses were performed on the data, results indicate differing prevalent rates for the four key dimensions of dysfunctional coping derived from the Brief-cope questionnaire, used to measure dysfunctional coping in this study; Denial Coping, 68 (61.8 percent), Behavioral Disengagement Coping, 46 (41.8 percent), Substance Use Coping, 24 (21.8 percent), Self-Blame Coping, 61 (55.5 percent); and composite (Integrated/Combined) dysfunctional coping, 49 (44.5 percent). A total prevalence rate of 44.5 percent was reported. Altogether more than 60 percent of the HIV patients screened positive for one dimension of dysfunctional coping or the other. The qui-square analyses revealed an association of denial coping with duration of HIV-infection/survivability. Conclusion/Recommendation: Overall, the study was able to demonstrate that dysfunctional coping was quite common among HIV patients. Dysfunctional coping may be a determinant of health in HIV patients and significantly affect health outcome. It was therefore recommended that interventions focused on coping strategies be integrated into management of HIV patients in order to improve their psychological and physical wellbeing.
Hydrocarbon Volumetric Analysis Using Seismic and Borehole Data over Umoru Field, Niger Delta-Nigeria  [PDF]
I. Aigbedion, H. O. Aigbedion
International Journal of Geosciences (IJG) , 2011, DOI: 10.4236/ijg.2011.22019
Abstract: Wireline signatures were used to identify hydrocarbon bearing sands and evaluate Petrophysical parameters for hydrocarbon pore volume determination. Well to seismic tie revealed that these reservoirs tied direct hydrocarbon indicators –bright and dim spots –on the seismic sections. Three hydrocarbon reservoir were delineated. Estimation of the volume of hydrocarbon in place revealed that reservoir A contained 1675091.54 ± 102 feet of gas in place, while reservoir B contained 163661.83 barrels ± 80 barrels and reservoir C contained 1739170.41 ± 102 cubic feet of gas.
Finite Element Modeling Of Low Heat Conducting Building Bricks  [PDF]
O. O. Oluwole, J. S. Joshua, H. O. Nwagwo
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2012, DOI: 10.4236/jmmce.2012.118069
Abstract: Heat conduction through conventional and interlocking building bricks with cavities was studied in this work. Heat transfer analysis was carried out using MATLAB? partial differential equation toolbox. Regular and staggered hole arrangements were studied. Results showed that four staggered holed interlocking bricks were effective in thermal resistance into the bricks and increasing the holes beyond four did not give any thermal resistance advantage. For the conventional bricks staggered holes did not give any thermal resistance advantage but the four-holed bricks were also adjudged to be effective in thermal resistance into the brick surface. Increasing the number of holes beyond four in conventional bricks did give some thermal resistivity advantage but very minimal. Structural strengths of holed bricks were not considered in this study.
On Discrete Adomian Decomposition Method with Chebyshev Abscissa for Nonlinear Integral Equations of Hammerstein Type  [PDF]
H. O. Bakodah, Mohamed Abdalla Darwish
Advances in Pure Mathematics (APM) , 2012, DOI: 10.4236/apm.2012.25042
Abstract: We study approximate solutions of a nonlinear integral equation of Hammerstein type. We describe the principle of discrete Adomian decomposition method (DADM). DADM is considered in the case we evaluate numerical integration by using Chebyshev roots. This technique gives an accurate solutions as will shown by illustrate examples.
Spatial Pattern of Land Cover Change Using Remotely Sensed Imagery and GIS: A Case Study of Omo-Shasha-Oluwa Forest Reserve, SW Nigeria (1986-2002)  [PDF]
Oludare H. Adedeji, Clement O. Adeofun
Journal of Geographic Information System (JGIS) , 2014, DOI: 10.4236/jgis.2014.64033
Abstract:

Spatial patterns of land cover changes in the Omo-Shasha-Oluwa Forest Reserves were conducted on Landsat TM and ETM+ imageries of 1986 and 2002 using remote sensing and GIS techniques. Extent of tree plantation (Gmelina arborea) grew from about 145 sq. km in 1986 to about 322 sq. km in 2002 (122% increase). The natural forest declined from about 2569 sq. km in 1986 to about 2253 sq. km by 2002, while the non-forest areas increased by some 5% from 341 km2 in 1986 to about 490 km2 by 2002. Land cover pattern and its changes in the study area are linked to both natural and anthropogenic processes such as illegal logging, demand for soft wood for industries and expansion of settlements. The conversion of natural forest into monoculture plantations should be discouraged because they do not give room for biodiversity. Specific forestry and environmental laws and regulations that significantly address landscape changes in reserved and protected areas should be enforced to reduce activities that negatively affect the forest reserves. There is also the need to develop a wider and more integrated GIS system of the forest and other land resources in the country to assist different kinds of planning and management activities.

Transient Ipsilateral Lower Limb Paresis after Interscalene Brachial Plexus Block  [PDF]
O. H. Idehen, F. E. Amadasun
Case Reports in Clinical Medicine (CRCM) , 2014, DOI: 10.4236/crcm.2014.33038
Abstract:

We describe a partial motor block of ipsilateral lower limb after interscalene block with the injection of 40 ml of 0.5% bupivacaine and 2% lignocaine with adrenaline. Immediately after the block, patient reported a right motor hemi syndrome which was transient. We concluded that the neurological symptom was caused by the technique of interscalene brachial plexus block may be as a result of excessive lateral deviation of the neck with a compromised collateral circulation.

Carbon and Hydrogen Isotopes as Tracers of Methane Dynamic in Wetlands  [PDF]
Romina Sanci, Héctor O. Panarello
International Journal of Geosciences (IJG) , 2015, DOI: 10.4236/ijg.2015.67058
Abstract: This work presents a review of the main processes leading to the production and sinking of methane in wetlands and how they affect the stable isotope composition of carbon and hydrogen. Isotope fractionation factors associated to diffusion, ebullition, bacterial oxidation, etc., have been gathered from relevant literature in an intent of providing researchers in this thematic with practical procedures and tools for the interpretation of experimental data. Also it is presented guidelines of the most reliable field and laboratory methods used at present for the correct sampling and analyzing methane in different stages of occurrence, as well the most common tools used in their interpretation. Each statement is fully referenced to a long updated list of publications.
High-Order Finite Difference Schemes for the First Derivative in Von Mises Coordinates  [PDF]
S. O. Alharbi, M. H. Hamdan
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.43059
Abstract: Third- and fourth-order accurate finite difference schemes for the first derivative of the square of the speed are developed, for both uniform and non-uniform grids, and applied in the study of a two-dimensional viscous fluid flow through an irregular domain. The von Mises transformation is used to transform the governing equations, and map the irregular domain onto a rectangular computational domain. Vorticity on the solid boundary is expressed in terms of the first partial derivative of the square of the speed of the flow in the computational domain, and the schemes are used to calculate the vorticity at the computational boundary grid points using up to five computational domain grid points. In all schemes developed, we study the effect of coordinate clustering on the computed results.
The Socio-Demographics of HIV-Infected Persons with Psychological Morbidity in Zaria, Nigeria  [PDF]
O. H. Ezeh, C. C. Ezeh
Open Journal of Medical Psychology (OJMP) , 2017, DOI: 10.4236/ojmp.2017.64018
Abstract: Introduction: It is estimated that more than 330 million persons are living with HIV-infection globally and in Nigeria about 3.4 million persons are living with the infection, with an annual death rate of 180,000. Psychological morbidity often accompanies chronic illnesses and may be associated with substance abuse, poor health seeking behaviour and adherence to treatment program; it may worsen existing health problems and the overall quality of life. Until the burden is effectively identified, intervention cannot be planned. Until there is cure, the goal is to manage and cope effectively with HIV-infection. Little if any studies have been done in this area in the North West geopolitical zone of Nigeria, the study would help to identify high risk groups and prevent the progression and spread of the infection. Objectives: To identify HIV-infected persons with psychological morbidity, accessing HIV-clinic at Shika Hospital, Zaria, Kaduna State; and analyze their socio-demographic profile. Methodology: A cross sectional descriptive study was carried out to assess and analyze the socio-demographic characteristics of HIV-infected persons attending Shika hospital Zaria Nigeria, who screened positive for psychological morbidity. A total of 109 HIV-infected persons receiving HAART at Shika clinic, Zaria, Kaduna State, Nigeria, were administered questionnaires; the General Health Questionnaire (GHQ-12) measuring psychological morbidity and socio-demographic data. The participants ranged in age between 18 and 75 years. Results: Data were analyzed using SPSS software 15. Both descriptive and inferential Statistics were performed on the data. Results indicate a total prevalence rate of psychological morbidity of 78 percent among participants. Of this, about 16.2 percent were severely distressed, 25.1 percent moderately distressed and 36.7 percent were mildly distressed. The females were more likely to be distressed than men (65 percent vs. 35 percent of those with psychological morbidity, OR = 3.5 CI 95 percent). It was (57 percent) for patients whose HIV-infection was of relatively shorter duration (less than 4years) than (43 percent) those of longer duration (5 years and above; OR = 1.7, CI 95 percent = 1.1 - 3.5). The age group (18 - 40 years) was more likely to screen positive for psychological morbidity (58.3 percent vs. 41.7 percent, OR = 2.4, CI 95 percent), than the age group (41 - 75 years). On the other hand, Christians were more likely than Muslims (55 percent vs. 45 percent, OR = 1.5, CI 95 percent = 1.1 - 3) to be distressed. For married patients with
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