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Smart Grid and Renewable Energy 2018年第12期9卷 285-298页

作者： Adama Ouedraogo Serge Dimitri Y. B. Bazyomo Salifou Ouedraogo abdoul razakou Dieudonné Joseph Bathiebo National Authority for Radiation Protection and Nuclear Safety Ministry of Environment of Burkina Faso Ouagadougou Burkina Faso Laboratory of Thermal and Renewable Energies Department of Physics Unit of Training and Research in Pure and Applied Sciences University of Ouaga 1 Prof. Joseph KI-ZERBO Ouagadougou Burkina Faso

This manuscript is about a theoretical modelling of conversion efficiency improvement of a typical polycrystalline Si solar cell in 1D assumptions. The improvement is brought by the increase of the collection of the minority carriers charge in excess. This increase is the consequence of the influence of an electric field provided by the use of the open circuit photovoltage of another silicon solar cell. We assume that it is integrated two silicon solar cells to the system. The first solar cell provides the open circuit photovoltage which is connected to two aluminum planar armatures creating a planar capacitor. The second solar cell is placed under the uniform electric field created between the two aluminum armatures. This work has shown an improvement of the output electric power leading to the increase of the conversion efficiency. We observe an increase of 0.7% of the conversion efficiency of the second silicon solar cell.

关键词： Open Circuit Photovoltage Planar Capacitor Electric Field Conversion Efficiency Monochromatic Illumination and Silicon Solar Cell

Knowledge and Practices of Dentists, Oral and Maxillofacial Surgeons of Cone Beam Computed Tomography (CBCT) and the Dentascanner in a Low Income Country: Case of Togo

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Open Journal of Radiology 2017年第1期7卷 1-8页

作者： Mazamaesso Tchaou Haréfétéguéna Bissa Plaodesina Essobozou Pegbessou abdoulatif Amadou Bidamin N’timon Mawuena Dansou abdoul-razakou Adam Lantam Sonhaye Lama-Kegdigoma Agoda-Koussema Komlan Adjenou Department of Radiology Sylvanus Olympio Teaching Hospital of Lomé Lomé Togo Department of Oral and Maxillofacial Surgery Sylvanus Olympio Teaching Hospital of Lomé Lomé Togo Department of ENT and Neck Surgery Sylvanus Olympio Teaching Hospital of Lomé Lomé Togo Department of Radiology Kara Teaching Hospital Lomé Togo

Background: In dental-maxillofacial imaging, 3D sectional imaging progressively replaces conventional 2D imaging in developed countries. They are based specially on Computed tomography (CT-Scan), with the Dentascan application and cone beam computed tomography (CBCT). In developing countries those technics are newly introduced. Aim: This study aimed at studying the knowledge and practices of dentist and oral and maxillofacial surgeons on sectional imaging such as Dentascan and Cone Beam Computed Tomography (CBCT). Materials and Methods: We conducted an anonymous survey among dentists and oral maxillofacial surgeons in Togo over one month. Results: The response rate was 78.79% (27/33). They were mainly male sex (sex ratio of 2.25 men for one woman). They were aged between 27 and 71 years old with an average of 49.69 years old. The majority (61.54%) had a professional experience over 20 years. The majority of respondents (65.38%) believed their level of knowledge about dental x-Ray was poor. Half of them (50%) confirmed that they had never asked for a Dentascan, and 15.38% asked from time to time for it and only two (7.69%) asked often for this test. 96.15% confirm they have no knowledge of the Dentascan. Regarding the CBCT, 84.62% didn’t ask for it because this technique did not exist in Togo before. 69.20% of respondents confessed to be interested in continuing training on sectional imaging. Conclusion: This study shows that sectional imaging is very little used by oral and dental practitioners in Togo because of the ignorance of the new techniques and the absence of the CBCT. It is therefore necessary to promote the teaching of the new technique of sectional imaging in the training syllabus of oral and dental specialists and to initiate continuing medical training.

关键词： Knowledge Practice Dentascan Cone Beam Computed Tomography (CBCT) Dentist Oral and Maxillofacial Surgeon Togo

Epidemiological and Therapeutic Aspects of Proctological Pathologies in Pregnant and Postpartum Women at the Reference Health Center of Commune IV of Bamako District

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Open Journal of Obstetrics and Gynecology 2023年第4期13卷 752-766页

作者： Seydou Mariko Amaguiré Saye Dessé Diarra Sirima Diarra Mariam Tangara Brahima Dembélé Fanta Doumbia Moussa Samaké Abdou Guiré Yéli Dianessi abdoul razakou Dicko Amadou Bocoum Youssouf Traoré Adégné Togo Gynecology Department of Mali Bamako Hospital Bamako Mali Department of Gynecology and Obstetrics Reference Health Center of Commune IV Bamako Mali Department of General Surgery Centre de Santé de Référence de la commune IV Bamako Mali Department of Public Health Centre de Santé de Référence de la commune IV Bamako Mali Department of Gynecology and Obstetrics Center Hospitalier Universitaire (CHU) Gabriel TOURE Bamako Bamako Mali

Introduction: Painful proctological conditions that are far less pleasant can mar pregnancy and childbirth. In Mali, few studies have been carried out on proctological pathologies in pregnant women and in the postpartum period. Objective: To determine the frequency and identify the risk factors of anal pathologies during pregnancy and in the postpartum period in the obstetric gynecology department of the Centre de Santé de Référence de la comme IV du District de Bamako. Mali. Methods and Materials: Our observational study, a cross-sectional cohort survey over a period of nine (09) months from January 1, 2020 to September 30, 2020, was conducted in the obstetrics and gynecology department of the Health Center of Reference of Type IV of the District of Bamako. Results: The frequency of anal pathologies during pregnancy and in the post partum period was 24% (36/150). The different anal pathologies found were anal fissures, hemorrhoidal disease, anal incontinence and multiple anal pathologies with respectively 10%;6.67%;5.33%;2%. Chronic constipation (p = 0.003), a newborn weight > 3500 g (p = 0.000) to the occurrence of hemorrhoidal disease. For anal fissures, risk factors were noted such as (weight of the newborn > 3500 g (p = 0.002) and duration of fetal expulsion > 20 minutes (p = 0.000). Finally, a newborn weight > 3500 g (p = 0.000) and a maternal age of up to 30 years (p = 0.001) were associated with the occurrence of anal incontinence. Conclusion: Our study shows that anal pathologies affecting women's intimacy are frequent during pregnancy and in the postpartum period and are part of the many taboos difficult to address in our society.

关键词： Anal Pathologies Delivery Pregnancy

Quality of Antenatal Care at the Referral Health Center of the Fourth Commune of Bamako District

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Open Journal of Obstetrics and Gynecology 2023年第3期13卷 609-624页

作者： Amaguiré Saye Dessé Diarra Sirima Diarra Brahima Dembele Abdou Guire Souleymane Dembele Yéli Dianessi Moussa Samake Seydou Mariko Seydou Fomba Diakaridia Kone abdoul razakou Dicko Pierre Coulibaly Daouda Camara Hamidou Toure Mama Sy Konake Obstetrics and Gynecology Service Commune IV Reference Health Center Bamako Mali Obstetrics and Gynecology Department of Bamako Mali Hospital Bamako Mali Department of Study and Research in Public Health Faculty of Medicine and Odontostomatology USTTB Bamako Mali Reference Health Center of Commune I Bamako Mali Obstetrics and Gynecology Department of the Somine DOLO Hospital Mopti Mali Reference Health Center of Kati Kati Mali

Purpose: To contribute to the improvement of the quality of prenatal consultation at the reference health center of the commune IV of the district of Bamako. Patients Methods: This was a qualitative cross-sectional study to assess the quality of prenatal consultation that took place from December 1, 2017 to January 31, 2018. It included 139 pregnant women whose consultations were monitored by the investigator and then the women were interviewed upon discharge from the facility to collect their opinions on the services they received. Results: The age group of 20 to 29 years was the most represented with 60.44%. In our study, 50% of our patients were managed by midwives. Among the antecedents constituting the risk factors sought in pregnant women, scar uterus was more frequent with 33.93% followed by arterial hypertension with 14.28% and multiparity with 7.14%. Conclusion: This study shows that the evaluation of the quality of services is an absolute necessity for the improvement of services in integrated reproductive health care centers.

关键词： Quality Prenatal Consultation Bamako Mali