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Search Results: 1 - 10 of 6160 matches for " Samuel Asare Konadu "
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Determination of Potential Landfill Site in Tarkwa Area Using Multi-Criteria GIS, Geophysical and Geotechnical Evaluation  [PDF]
Asare Asante-Annor, Samuel Asare Konadu, Ebenezer Ansah
Journal of Geoscience and Environment Protection (GEP) , 2018, DOI: 10.4236/gep.2018.610001
Abstract: A 24-acre land at Aboso serves as the site where municipal solid waste from Tarkwa and its environs are openly dumped. Evaluation of the suitability of this existing landfill site for the construction of an engineered landfill was determined. Reconnaissance survey, structural mapping, determination of depth to groundwater, geotechnical site investigation as well as socio-economic indicators showed that the existing landfill site is not suitable for an engineered landfill construction. A multi-criteria GIS model was used to select an alternative suitable area for the construction of an engineered landfill. The multicriteria GIS modelling identified fourteen (14) suitable areas for the siting of landfill in the Tarkwa area. A site located in Domeabra was chosen due to its proximity to the neighbouring communities of Tarkwa, Nsuta and Aboso. The suitability of the proposed site in Domeabra was assessed using geotechnical and geophysical methods. The geotechnical methods included the testing of soil properties such as moisture content, particle size distribution, Atterberg limit, bulk density, specific gravity, and compactibility. The soils at Domeabra site are predominantly gravel and sand, well graded with gradual increase in clay content with depth and good moisture content (less than 30%). The gravel and sandy soils have good to excellent shear strength and work ability. The soils in Domeabra have suitable dry density (1.3 - 2.1 Mg/m3), bulk density (1.7 - 2.5 Mg/m3) and specific gravity (2.2 - 2.9) for landfill construction. The geophysical method involved the use of seismic refraction tomography. The geophysical survey showed that the site is made up of four layers namely the top soil (0.5 - 2 m), weathered material (5 - 15 m), saturated material (10 - 15 m) and fresh rock. The water table occurs at a depth of 12 to 15 m. The proposed area in Domeabra based on the geophysical and geotechnical investigations is suitable for the construction of engineered landfill.
Reflective Collaborative Practices: What Is the Teachers’ Thinking? A Ghana Case  [PDF]
Amoah Samuel Asare
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.34069
Abstract: With advances in using the teachers’ classroom as the foreground for teacher improvement, reflective and collaborative activities provide teachers with a positive attitude towards questioning their teaching in a variety of professional development contexts. This study therefore explores how teachers within one school develop their thinking about their practices, if given an opportunity to engage in a planned series of critical dialogues relating to their own classroom teachings. Using a case study approach, four mathematics teachers purposely and through theoretical sampling techniques were selected in a school in Ghana for the study. The field research included interviews and reflective dialogue. Key issues identified include the opportunities to systematically and rigorously diagnose their practices leading to the development of different reflective scales when reflecting. The process was found to be a tool for supporting teachers to critically think which is underpinned by social, political and cultural issues as a process to analyze competing claims and viewpoints. Recommendations for policy and potential areas for further research were also made.
Nutrient-Induced Growth of Coliform and HPC Bacteria in Drinking-Water Pipes  [PDF]
Patrick Asamoah Sakyi, Roland Asare, Chris Anani, Samuel Boakye Dampare
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.36061
Abstract: We conducted a study on a model drinking water distribution system to evaluate the impact of nutrient in the form of sodium acetate on the growth and survival of coliform and heterotrophic plate count (HPC) bacteria for a maximum of 21 days residence time of water in pipes. Our results show that, besides the nutrient added and the absence of any additional source of contamination and additional supply of nutrient, there was significant growth of the above mentioned bacteria in the pipes and bottles for a couple of days, after which the bacterial population began to decrease. The results indicate that the bacteria used the nutrient to grow and multiply until the nutrient was totally consumed and became depleted in the bulk water phase, after which the bacterial population reached a near stationary level and subsequently declined. This suggests the death of some of the bacteria and their dead cells were used by other bacteria for growth and survival. Using a detection limit of 3.3 CFU/100 mL for the coliforms, the study shows that after sometime, no bacteria were found in the water phase of the pipe, however, the biofilm in the pipes still harbored some of the bacteria. The results have revealed that the bacteria also have the tendency to move from the water phase to the biofilm since the latter provides a more suitable environment for bacteria to thrive on and grow, thus prolonging their survival in the system.
Seroprevalence and Risk Factors of Syphilis Infection among Antiretroviral Therapy Naive HIV Patients at the Cape Coast Teaching Hospital, Ghana  [PDF]
Prince Asare-Bediako, Kwabena Dankwa, Daniel E. Azumah, Samuel V. Nuvor
World Journal of AIDS (WJA) , 2018, DOI: 10.4236/wja.2018.83007
Abstract: Diagnosis of sexually transmitted infections is very important considering the spread of HIV and the extensive use of highly active antiretroviral therapy worldwide. This will assist in planning of treatment schedule in controlling these infections. The study therefore aimed at determining the prevalence of syphilis in HIV positive antiretroviral therapy naive patients in Cape Coast and the associated risk factors involved in infection. A cross-sectional study was carried out using initial HIV rapid and confirmation tests, and then Venereal Disease Research Laboratory test with the Ultra Rapid Test Kits for syphilis. Demographic data, risky sexual behaviours capable of co-transmission of both HIV and Syphilis, were also collected through the use of questionnaires. In all, 150 HIV positive antiretroviral naive subjects were studied and 15 (10%) were positive for VDRL test, with females (6.00%) and males (4.00%), who were mainly within the age group of 20 - 39 years. A significant number of males (p = 0.019) and females (p = 0.015) participants were not smoking with a fewer number of the females (p = 0.002) having multiple sexual partners. Also a smaller number of those who were infected with the bacteria (p = 0.004) did not support the control of sexually transmitted infection (p = 0.022). The result showed that co-infection of Syphilis in HIV positive antiretroviral therapy naive patients persists in the Cape Coast Metropolis, which is an indication of prominence of STIs that require further study on a larger scale to ascertain the extent of co-infection and to formulate policy for treatment to help minimize the rate of infection.
Emotional Intelligence as an Essential Factor for the Successful Management and Financial Administration of Projects and Programs  [PDF]
Joseph Asare
American Journal of Industrial and Business Management (AJIBM) , 2016, DOI: 10.4236/ajibm.2016.64038
Abstract: The ability of administrative leaders to manage their emotions, including the influence they have on the people they work with in projects and programs, influences the way the activities involved are organized, conducted, and implemented and the level of project goals that are usually achieved. The success of projects is determined by a number of factors as indicated in the International Project Management Association (IPMA) Competence Baseline [1]. When analyzed and broken into details, those factors are connected to the management and the financial administration processes throughout the project’s life cycle. Several attempts have been made by scholars to write on some of the factors that can contribute to project success. Emotional intelligence as an essential factor for the successful management and financial administration of projects and programs would be shown through the use of the emotional intelligence pyramid. Emotional intelligence would also be connected to the Projects and Programs Success Roulette Wheel where this study would develop based on the IPMA Competence Eye. Studies have shown that managers must have high emotional intelligence to enable them to achieve success in projects and programs.
Characterization of a Mutant Population of Cocoyam (Xanthosoma sagittifolium L. Schott)
Agyemang Danquah,Samuel K. Offei,Essie T. Blay,Eric Asare
International Journal of Botany , 2006,
Abstract: A mutant population of cocoyam (Xanthosoma sagittifolium L. Schott) developed through gamma irradiation of shoot tips of cocoyam was evaluated in two field experiments. In the first experiment, four putative mutants, fifty irradiated clones and four non-irradiated clones were evaluated for morpho-agronomic diversity. Progeny derived from minisetts were characterised in a second experiment to establish repeatability of the distinctive characters of the putative mutants. Yields were exceptionally low and this was attributed to poor environmental conditions. The mutants showed a distinctive yellow cormel apex and yellow interior cormel colour. Out of seventeen morphological traits studied in the second experiment, ten were monomorphic. These were growth habit, petiole attachment, petiole surface glaucous, leaf pubescence, leaf variegation, leaf surface glossy (shining), leaf margin, number of collecting vein, position of collecting vein and shape of petiole in cross-section. The seven polymorphic traits were petiole colour, colour of vein on leaf surface, leaf shape, leaf margin colour, leaf surface colour, leaf sinus denuding and lamina orientation. The main differences in the polymorphic characters were between the mutants on one side and the irradiated (non mutants) and non-irradiated clones on another side. It will be interesting to determine whether the mutants have desirable agronomic characters.
Family Planning Awareness, Perceptions and Practice among Community Members in the Kintampo Districts of Ghana  [PDF]
Obed Ernest A. Nettey, Yeetey A. Enuameh, Emmanuel Mahama, Abubakari Sulemana, George Adjei, Stephaney Gyaase, Samuel Afari-Asiedu, Robert Adda, Abena Konadu Yawson, Gifty Fosuaa Nuamah, Edward Apraku Anane, Livesy Abokyi, Charles Zandoh, Martha Abdulai, Ellen Abrafi Boamah, Kwame Adjei, Seeba Amenga-Etego, Francis Dzabeng, Charlotte Tawiah-Agyeman, Frank Baiden, Kwaku Poku Asante, Seth Owusu-Agyei
Advances in Reproductive Sciences (ARSci) , 2015, DOI: 10.4236/arsci.2015.31001
Abstract: Family planning is known to prevent maternal deaths, but some social norms, limited supplies and inconsistent use makes this difficult to achieve in most low- and middle-income countries. In spite of the high fertility levels in most sub-Saharan African countries and the potential economic benefits of family planning, its patronage remains very low in the sub-region. This study was with the objective of identifying the levels of awareness, utilization, access to and perceptions about family planning and contraception. A cross-sectional study design was used for the study, with data collected from multiple sources using both quantitative and qualitative approaches. Relevant findings included a marked disconnect between family planning/contraceptive knowledge and use. The pills and injectables were the most frequently used, but females in the study population poorly patronised emergency contraception. Supplies of most family planning methods were found to be health facility based, requiring clients to have to necessarily go there for services. Some respondents harboured perceptions that family planning was the responsibility of females alone and that it fuelled promiscuity among female users. Recommendations made include ensuring that health facilities had adequate staff and expertise to provide facility-based family planning services and also to disabuse the minds of community members of the negative perceptions towards family planning.
Funding of Agricultural Research and Development in Ghana: The Case of Council for Scientific and Industrial Research (CSIR)  [PDF]
Roland Asare, George Owusu Essegbey
Technology and Investment (TI) , 2016, DOI: 10.4236/ti.2016.72006
Abstract: Agricultural Research and Development (R&D) investments contribute greatly to economic growth, agricultural development and poverty reduction in developing countries. This paper examines the financial investment and expenditure trends in agricultural R&D in Ghana with emphasis on the Council for Scientific and Industrial Research (CSIR) and the implication for the policies driving agricultural research in Ghana. Data from Agricultural Science & Technology Indicator (ASTI) and in-depth studies on agricultural R&D in Ghana were used. Purposive sampling was used to gather data in thirteen agricultural research institutes and five public universities in Ghana. Through questionnaire administration, data were collected and analyzed using descriptive statistics. The study revealed that, total public agricultural R&D expenditure had increased by 59 per cent from 42.5 million (2005 PPP) dollars in 2000 to 67.7 million (2005 PPP) dollars in 2011 and with an average expenditure of 54.1 million (2005 PPP) dollars per year. The total expenditure by CSIR constitutes about 50 per cent of the total agricultural research expenditure in Ghana. The study however, showed a drastic decline in capital investments from 6.7 per cent in 2000 to 0.1 per cent in 2011 of the total government funding with operational cost following similar declining pattern. Still, when considering the totality of funding including salaries and wages, government support is the main source of funding for agricultural R&D in Ghana (85 per cent) with donors (7.3 per cent), sale of goods and services (6.7 per cent) and others serving as complementary sources. Though there have been considerable government investments in agricultural R&D in CSIR over the period, impact on operational and research activities has been minimal as the chunk of it went into payment of salaries and wages. The fundamental challenge is funding the very important operational and research activities which lead to technology development and innovation. Increasing commercialization of research technologies and government investment in agricultural R&D in Ghana, are recommended to address this investment challenge.
Hdydrofracturing in the development of groundwater resources in the Southern part of the Volta region of Ghana
EB Asare
Journal of Science and Technology (Ghana) , 2003,
Abstract:
Hydrogeological and Hydrochemical Assessment of Basin Granitoids in Assin and Breman Districts of Ghana  [PDF]
Asare Asante- Annor, Joseph Acquah, Ebenezer Ansah
Journal of Geoscience and Environment Protection (GEP) , 2018, DOI: 10.4236/gep.2018.69004
Abstract: Hydrogeological and hydrochemical assessments were carried out in Assin and Breman districts of Ghana. A multi-criteria approach was used in the assessment of the basin granitoids including; electrical resistivity survey, pumping test and water quality analysis. A total of twenty-five (25) representative boreholes were drilled, developed and pumped; obtaining data for aquifer hydraulic parameters estimation. Correlation analysis was used to determine relationships that exist between aquifer hydraulic parameters. Schoeller, Piper, Stiff plot and Gibbs diagrams were used to determine the hydrogeochemical facies, water types and the mechanism that control groundwater quality. The statistical analysis determined that aquifer hydraulic parameters discharge rate (Q), hydraulic conductivity (K) and Transmissivity (T) showed a strong positive correlation with specific capacity (Q/Sw) with R value 0.8462, 0.8738 and 0.8332 respectively. The K and T were respectively between 0.02 - 0.90 m/day and 0.36 - 13.47 m2/day with mean of 0.24 m/day and 3.03 m2/day respectively. The K values indicate a hydrogeological condition of aquiclude with relatively low permeability and medium water bearing capacity. The aquifer T magnitude is very low to low, groundwater potential is adequate for local water supply with limited and private consumption. All physicochemical parameters were within the permissible limits of Ghana Standards Authority (GSA) and World Health Organisation (WHO) except for apparent colour, pH, Fe and Mn. Distribution of major ions in groundwater samples was calculated and the general trend among cations and anions was found to be Ca2+ > Na+ > Mg2+ and Cl > HCO3 > SO42 respectively. The study area shows five main water types namely; Ca-HCO3, Na-Mg-HCO3-SO4, Ca-SO4, Na-Cl and Mg-Na-Cl. Weathering of rock-forming minerals as the mechanism controlling the groundwater chemistry. Microbiological parameters were above the permissible limits. Groundwater is suitable for drinking after treatment with chlorination, aeration and slow sand filtration methods.
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