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Search Results: 1 - 10 of 10972 matches for " Joseph Nii Nanor "
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Effects of Quarry Activities on some Selected Communities in the Lower Manya Krobo District of the Eastern Region of Ghana  [PDF]
Vincent Kodzo Nartey, Joseph Nii Nanor, Raphael Kweku Klake
Atmospheric and Climate Sciences (ACS) , 2012, DOI: 10.4236/acs.2012.23032
Abstract: Extraction of Limestone is an economically important and widespread activity in Ghana and has existed since historical times. However, in spite of its remarkable contribution towards economic development, some adverse impacts have been noticed, especially where extraction is carried out without proper planning and use of modern technology and scientific methods. We have carried out an assessment on the environmental effects of limestone quarrying on some communities in the Lower Manya Krobo District in the Eastern region of Ghana. Dust emission is one of the major effects of the practice of limestone extraction and as such, dust (PM10) sampling was conducted at the affected communities. Mean dry season results recorded in these communities stand at 125.0 μg/m3 or Bueryonye, 116.0 μg/m3 at Odugblase and 109.3 μg/m3 at Klo-Begoro. Oterkpolu community which served as the control recorded an average of 50.5 μg/m3. Average rainy season values recorded for the communities were 83.3 μg/m3 for Bueryonye, 113.1 μg/m3 at Odugblase and 74.4 μg/m3 at Klo-Begoro. The control community, Oterkpolu, had 43.3 μg/m3. These values are above the EPA, Ghana daily guideline level of 70 μg/m3 over a time-weighted average per 24 hours. Questionnaires administration and health records obtained from the health facilities in the communities revealed notable deteriorations in the health of the people as a result of the quarrying activities in the area. Notable among these is the prevalence of malaria though not related to dust emissions, it results from mosquitoes breeding in the stagnant pools of water found in pits created as a result of the mining activity. Other common health cases recorded were acute respiratory tract infection, ear and eye infections, cough and pneumonia.
Determinants of Mobile Banking Adoption in the Ghanaian Banking Industry: A Case of Access Bank Ghana Limited  [PDF]
Agbemabiese George Cudjoe, Patrick Amfo Anim, Joseph Gerald Nii Tetteh Nyanyofio
Journal of Computer and Communications (JCC) , 2015, DOI: 10.4236/jcc.2015.32001
Abstract: The study examined the determinant of mobile banking adoption among bank customers in Ghana, with specific emphasis on Access Bank. In line with literature, the study applies theoretical frameworks which have been developed from existing literatures on innovation and adoption to collect responses from one hundred and fifty (150) sampled customers of Access Bank in order to investigate the determinants of mobile banking adoption in the Ghanaian banking industry. The results from the study revealed that, each factor measured had some level of significant effect on consumer intention to adopt and use mobile banking services provided by Access Bank. Additionally, the study unveiled that, perceived credibility and perceived financial cost were the major setback with regards to customers adoption of mobile banking services provided by Access Bank, and as a result of this, Ghanaians have formed a negative behavioural pattern towards mobile banking. In addition, the findings showed that, perceived credibility and perceived financial cost have a stronger effect on consumer intention to adopt and use mobile banking service than perceived usefulness and perceived ease of use. It was, therefore, recommended that banks in Ghana should create more awareness through personal interaction with customers, develop quality initiatives in order to build customer’s confidence. Equally, banks should also review the cost of their mobile banking service.
Estimates of the maternal mortality ratio in two districts of the Brong-Ahafo region, Ghana
Smith,Jason B.; Fortney,Judith A.; Wong,Emelita; Amatya,Ramesh; Coleman,Nii A.; Johnson,Joseph de Graft;
Bulletin of the World Health Organization , 2001, DOI: 10.1590/S0042-96862001000500006
Abstract: objective: to estimate the maternal mortality ratio (mmr) by the sisterhood method in two districts of the brong-ahafo region of ghana, and to determine the impact of different assumptions and analytical decisions on these estimates. methods: indirect estimates of the mmr were calculated from data collected in 1995 by family health international (fhi) on 5202 women aged 15-49 years, using a household screen of randomly selected areas in the two districts. other data from the nationally representative 1994 ghana infant, child and maternal mortality survey (icmms) and from the 1997 kassena-nankana district study were also used for comparison. findings: based on the fhi data, the mmr was estimated to be 269 maternal deaths per 100 000 live births for both districts combined, a figure higher than icmms estimates. biases during data collection may account for this difference, including the fact that biases underestimating mortality are more common than those overestimating it. biases introduced during data analysis were also considered, but only the total fertility rate used to calculate the mmr seemed to affect the estimates significantly. conclusions: the results indicate that the sisterhood method is still being refined and the extent and impact of biases have only recently received attention. users of this method should be aware of limitations when interpreting results. we recommend using confidence limits around estimates, both to dispel false impressions of precision and to reduce overinterpretation of data.
Contractor Selection Criteria in Ghanaian Construction Industry: Benefits and Challenges  [PDF]
Daniel Nii Ayeh Ayettey, Humphrey Danso
Journal of Building Construction and Planning Research (JBCPR) , 2018, DOI: 10.4236/jbcpr.2018.64019
Abstract: Selecting a contractor for construction project is a difficult decision to be taken by a client because it may lead to construction delivery problems or successful delivery of the project. This study, therefore, investigated the contractor selection criteria in the Ghanaian construction industry, considering the benefits and challenges. A quantitative research method was adopted in this study through the use of a questionnaire. The target population for the study consisted of registered contractors and consultants in the Ashanti and Brong-Ahafo regions of Ghana. It was found that though the construction professionals are well vested with the prequalification selection criteria that are being used within the Ghanaian construction industry, they were not familiar with multi-criterial section methods. It was also found that the benefits of the contractor selection criteria include: enabling the client to select contractors who are performers for the project, saving the project owner a lot of time, minimizing the possibility of contractor default, and facilitating the achievement of project success and the objectives within the scheduled time. Furthermore, excessive cost and time overrun, poor quality standard, imprecise assessments due to lack of information, criteria being very complex and difficult to apply in practice, among others were identified as the challenges to the contractor selection criteria in Ghanaian construction industry. The study recommends for further studies to determine the impact of the identified challenges on construction projects, and ways to minimize the challenges.
Initial Experience with Stereotactic Surgery in West Africa (English)
Nii Adjetey Bonney Andrews
African Journal of Neurological Sciences , 2002,
Abstract: (Af. J. of Neurological Sciences: 2002 21(1): 26-37)
The Perspectives of Kwame Nkrumah University of Science and Technology Dental School Graduates  [PDF]
Alex Oti Acheampong, Felix Ampofo Anafi, Nana Tuffuor Ampem Gyimah, Ama Amuasi, Solomon Obiri-Yeboah, Daniel Kwesi Sabbah, Alfred Nyarko, Merley Newman Nartey, Patrick Ampofo, Stephen Ankoh, Joseph Abu-Sakyi, Isaac Kwaku Asiamah, Robert Nii Lamy Larmie, Francis Adu-Ababio, James Appiah Amoateng, Peter Donkor
Open Journal of Stomatology (OJST) , 2018, DOI: 10.4236/ojst.2018.85015
Abstract: Background: The idea of establishing a Dental school at the Kwame Nkrumah University of Science and Technology (KNUST) was borne out of a need. There was a shortfall in the supply of dental surgeons, especially in the northern half of the country. Aim/Objective: To seek for feedback from KNUST Dental school graduates over the past six about their overall assessment of the BDS courses taught during their clinical training and challenges faced in the course of their training. Methodology: A cross-sectional retrospective study of all KNUST Dental school graduates from 2012 to 2017. A structured goggle form questionnaire was developed. The Google form link was emailed to the representatives who in turn forwarded the link to their year mates. The questionnaire was filled online and submitted as requested. Results: This represented 63.0% of the entire graduates from KNUST Dental School. The male to female ratio was 1.3:1.0. The age range of our graduate was from 24 yrs (3.8%) to 32 years (1.9%). The average age was 26.3 years. 48.10% of respondents said their training was very good. The major challenges were inadequate clinical space (25.2%) and lack of materials and dental chairs for students’ clinic (27.3%). Conclusion: On the whole, the quality of the training was rated as very good even though some of the courses taught during the clinical training were rated as poor. Inadequate dental chairs, laboratory and clinic materials, supervision of student’s clinic were some of the major challenges expressed by the graduates.
Imaging and Dosimetric Consideration for Titanium Prosthesis Implanted within the Irradiated Region by Cobalt-60 Teletherapy Unit  [PDF]
Vaino Indongo, Samuel Nii Adu Tagoe, Kwame Kyere, Cyril Schandorf
International Journal of Medical Physics,Clinical Engineering and Radiation Oncology (IJMPCERO) , 2018, DOI: 10.4236/ijmpcero.2018.72014
Abstract: The aim of this research is to observe dose distributions in the vicinity of titanium prosthetic implants during radiotherapy procedures on 60Co teletherapy machine, Prowess Panther treatment planning system (TPS). Data were obtained using a locally fabricated tissue equivalent phantom CT images with titanium prosthesis which was irradiated with 60Co gamma radiation. Prowess TPS (1.25 MeV) estimated less variations. Proximal ends of the metal recorded slight increase in doses as a result of backscatter with dose increment below acceptable tolerance of ±3%. Doses measured decreases on the distal side of the prosthesis at a distance less than dmax from the plate on each beam energy. The depth dose increases marginally after a certain depth level which generally originated from the unperturbed dose due to increase in the electron fluence. The percentage of depth doses decrease with the increase in plate thickness. A reduction in the above trend was also noticed with an increase in beam energy primarily because scattered photons are more forwardly directed. Prowess TPS (convolution superposition algorithm) was found to be better at reducing dose variation when correction for artifact. Manual calculations on blue phantom data agree with results from Prowess. This treatment system is capable of simulating dose around titanium prosthesis as its range of densities, 0.00121 to 2.83, excludes titanium density (rED for titanium is 3.74).
Improved Evaluation Method for the SRAM Cell Write Margin by Word Line Voltage Acceleration  [PDF]
Hiroshi Makino, Naoya Okada, Tetsuya Matsumura, Koji Nii, Tsutomu Yoshimura, Shuhei Iwade, Yoshio Matsuda
Circuits and Systems (CS) , 2012, DOI: 10.4236/cs.2012.33034
Abstract: An accelerated evaluation method for the SRAM cell write margin is proposed using the conventional Write Noise Margin (WNM) definition based on the “butterfly curve”. The WNM is measured under a lower word line voltage than the power supply voltage VDD. A lower word line voltage is chosen in order to make the access transistor operate in the saturation mode over a wide range of threshold voltage variation. The final WNM at the VDD word line voltage, the Accelerated Write Noise Margin (AWNM), is obtained by shifting the measured WNM at the lower word line voltage. The WNM shift amount is determined from the measured WNM dependence on the word line voltage. As a result, the cumulative frequency of the AWNM displays a normal distribution. Together with the maximum likelihood method, a normal distribution of the AWNM drastically improves development efficiency because the write failure probability can be estimated from a small number of samples. The effectiveness of the proposed method is verified using the Monte Carlo simulation.
Roles of p53 in Various Biological Aspects of Hematopoietic Stem Cells
Takenobu Nii,Tomotoshi Marumoto,Kenzaburo Tani
Journal of Biomedicine and Biotechnology , 2012, DOI: 10.1155/2012/903435
Abstract: Hematopoietic stem cells (HSCs) have the capacity to self-renew as well as to differentiate into all blood cell types, and they can reconstitute hematopoiesis in recipients with bone marrow ablation. In addition, transplantation therapy using HSCs is widely performed for the treatment of various incurable diseases such as hematopoietic malignancies and congenital immunodeficiency disorders. For the safe and successful transplantation of HSCs, their genetic and epigenetic integrities need to be maintained properly. Therefore, understanding the molecular mechanisms that respond to various cellular stresses in HSCs is important. The tumor suppressor protein, p53, has been shown to play critical roles in maintenance of “cell integrity” under stress conditions by controlling its target genes that regulate cell cycle arrest, apoptosis, senescence, DNA repair, or changes in metabolism. In this paper, we summarize recent reports that describe various biological functions of HSCs and discuss the roles of p53 associated with them.
Effects of omeprazole on symptoms and quality of life in Japanese patients with reflux esophagitis: Final results of OMAREE, a large-scale clinical experience investigation
Shigeru Yoshida, Masahiro Nii, Masataka Date
BMC Gastroenterology , 2011, DOI: 10.1186/1471-230x-11-15
Abstract: In a large-scale, specific clinical experience investigation of Japanese patients with RE, epidemiological characteristics, QOL and symptoms of the disease in relation to treatment with omeprazole and other gastrointestinal drugs, except PPIs, and safety data of omeprazole were collected. The Quality Of Life in Reflux and Dyspepsia questionnaire (QOLRAD) was used for QOL assessment.9967 patients were included in the analysis (omeprazole: 7888). At baseline, 75.2% of patients had three or more upper gastrointestinal symptoms, and 31.5% of patients had six or more upper gastrointestinal symptoms. The overall mean QOLRAD score at baseline was 5.14 (the best score is 7). In the omeprazole group, the rate of satisfactory improvement in subjective symptoms was 61.7% and 81.8% at Weeks 4 and 8, respectively, and these were both significantly higher than those of patients treated with other drugs. In both the omeprazole group and the other drugs group, the QOLRAD score at Week 4 improved significantly from baseline, and the degree of improvement was significantly greater in the omeprazole group than in the other drugs group. The favourable tolerability profile of omeprazole was confirmed.In a large-scale survey, omeprazole improved symptoms and QOL more effectively in Japanese patients with RE than other investigated drugs, and had a good tolerability profile.ClinicalTrials.gov identifier: NCT00859287.In the evaluation of clinical efficacy, subjective outcomes are now being regarded as very important, and patient-based clinical outcome measures are being required in addition to conventional indices of pathological changes. For reflux esophagitis (RE) in particular, some reports have shown that endoscopic findings do not correspond to the frequency and severity of symptoms[1] and that the health-related quality of life (QOL) of patients with RE is as impaired as that of patients with angina pectoris[2]. Elsewhere, in recent studies in Japan, the frequency of symptoms and the
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