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Determination of Potential Landfill Site in Tarkwa Area Using Multi-Criteria GIS, Geophysical and Geotechnical Evaluation

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Journal of Geoscience and Environment Protection 2018年第10期6卷 1-27页

作者： asare Asante-Annor samuel asare konadu Ebenezer Ansah Geological Engineering Department University of Mines and Technology Tarkwa Ghana

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.

关键词： Landfill Site Multi-Criteria GIS Seismic Refraction Tomography Geotechnical Site Investigation Tarkwa Area

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Application of ensemble models approach in anemia detection using images of the palpable palm

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Medicine in Novel Technology and Devices 2023年第4期20卷 76-86页

作者： Peter Appiahene samuel Segun Dzifa Dogbe Emmanuel Edem Yaw Kobina Philip Sackey Dartey Stephen Afrifa Emmanuel Timmy Donkoh Justice Williams asare Department of Computer Science and Informatics University of Energy and Natural ResourcesGhana Department of Information and Communication Engineering Tianjin UniversityChina c Department of Basic and Applied Biology University of Energy and Natural ResourcesGhana

Anemia is a public health issue with serious ramifications for human health *** particularly affects pregnant women and children from 6 to 59 months old even though every individual is at *** occurs when the Hb level is below its normal threshold or when the red blood cells are weakened or *** discover medical remedies on time,early detection or diagnosis of anemia assist patients to understand their *** invasive approach for anemia detection is costive and time-consuming as compared to the non-invasive approach which is reliable and suitable for developing communities where medical resources and personnel are *** study uses palpable palm images(dataset)collected from 710 participants in selected hospitals in *** images were extracted,segmented and converted into RGB percentile to train,validate and tested the machine learning models.A hybrid model was developed with the application of ensemble learning models using the R programming language on the R Studio ***,voting,boosting and bagging ensemble model techniques were used to build the hybrid models,the stacking ensemble model achieved an accuracy of 99.73%.The study justifies that ensemble models are efficient for medical disease diagnosis or detection such as anemia.

关键词： Machine learning Anemia detection Ensemble learning Algorithms

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Nutrient-Induced Growth of Coliform and HPC Bacteria in Drinking-Water Pipes

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Journal of Environmental Protection 2012年第6期3卷 508-517页

作者： Patrick Asamoah Sakyi Roland asare Chris Anani samuel Boakye Dampare Department of Earth Science University of Ghana Accra Ghana Graduate School of Nuclear and Allied Sciences University of Ghana Accra Ghana Science and Technology Policy Research Institute CSIR Accra Ghana

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.

关键词： Coliform HPC Bacteria Nutrient Drinking-Water Pipes Biofilm Bacterial Growth

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Seroprevalence and Risk Factors of Syphilis Infection among Antiretroviral Therapy Naive HIV Patients at the Cape Coast Teaching Hospital, Ghana

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World Journal of AIDS 2018年第3期8卷 76-89页

作者： Prince asare-Bediako Kwabena Dankwa Daniel E. Azumah samuel V. Nuvor Department of Biomedical Sciences School of Biological Sciences University of Cape Coast Cape Coast Ghana Department of Microbiology and Immunology School of Medical Sciences University of Cape Coast Cape Coast Ghana Cape Coast Teaching Hospital Cape Coast Ghana

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.

关键词： Seroprevalence HIV Syphilis Risk Factors Antiretroviral Therapy

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Awareness of and participation in mass drug administration programs used for onchocerciasis control in the Atwima Nwabiagya North District,Ghana

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Global Health Research and Policy 2023年第1期8卷 54-63页

作者： Francis Adjei Osei Sam Kofi Tekyi Newton Isaac Nyanor Eugene Osei-Yeboah Evans Xorse Amuzu Nicholas Karikari Mensah Obed Ofori Nyarko Ernest Amanor samuel Frimpong Odoom Suraj Yawnumah Abubakar Mathias Dongyele Aliyu Mohammed Ofeibea asare Stephanie Boadi Peter Furu Dan Wolf Meyrowitsch Ellis Owusu-Dabo Department of Global Health School of Public HealthKwame Nkrumah University of Science and TechnologyKumasiGhana Komfo Anokye Teaching Hospital KumasiGhana Ghana Health Service BolgatangaGhana Department of Epidemiology and Biostatistics Kwame Nkrumah University of Science and TechnologyKumasiGhana Career Development Centre Kwame Nkrumah University of Science and TechnologyKumasiGhana Department of Public Health Global Health SectionUniversity of CopenhagenCopenhagenDenmark

Background Studies on Mass drug administration(MDA)in Ghana targeting various diseases,have mostly focused on factors that affect coverage and compliance to MDA with limited focus on evidence regarding awareness and community perception of the ***,this study sought to provide empirical evidence on the knowledge of onchocerciasis,and awareness of and participation in the MDA among community *** A community-based cross-sectional survey was conducted from August to October 2019 in communities within the Atwima Nwabiagya North District,*** was collected from 2,008 *** and multivariate logistic regression analyses were performed to measure the associations between socio-demographics,having heard of onchocerciasis and its prevention,and levels of awareness of the MDA *** A total of 1268 respondents(63.2%)were aware of the MDA *** majority ofMost respondents(74.4%)were of the view that the information given about the program was not enough and 45.4%of the respondents had no idea about the relevance of the MDA *** who had ever heard about onchocerciasis prevention and persons who had previously participated in the MDA program were more likely to be aware of the MDA program during implementation(AOR=2.32;95%CI 1.79-3.01 and AOR=9.31;95%CI 7.06-12.26,respectively).Conclusions We observed a significant association between being aware of MDA campaigns and knowledge of onchocerciasis and its preventive methods,and participation in previous MDA *** recommend intensification and improvement of prevention campaigns regarding the onchocerciasis MDA program as key to ensuring increased MDA program participation.

关键词： Mass drug administration Onchocerciasis Awareness Ghana

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