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Journal of Electromagnetic Analysis and Applications 2023年第2期15卷 13-24页

作者： mohamed Yaya Teya Ousmane Sow Khady Loum Ibrahima Diatta Gora Diop Youssou traore Mamadou Wade Gregoire Sissoko International Research Group in Renewable Energy (GIRER) Dakar Senegal Ecole Polytechnique de Thiès Thiès Senegal Institut Universitaire de Technologie Université Iba Der THIAM Thiès Senegal

The bifacial silicon solar cell subjected to a magnetic field, is illuminated by the back side by a monochromatic light in frequency modulation, with high absorption, At minority carriers diffusion coefficient resonance frequency, a graphical study of the expressions of recombination velocity on the rear side is carried out. The optimum thickness of the base of the bifacial solar cell is deduced for each resonance frequency.

关键词： Bifacial Silicon Solar Cell Frequency Magnetic Field Wavelength-Recombination Velocity Base Thickness

Study at Two Dimensions of Thermal Transfer through a Fibers Panel Subjected to Climatic Constraints in Dynamic Frequency Regulations Established

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Energy and Power Engineering 2020年第5期12卷 135-142页

作者： mohamed Sidya Ould Brahim Issa Diagne Mamadou Babacar Ndiaye Youssou traore Seydou Faye Cheikh Thiam Pape Touty traore Ablaye Fame Sokhna Khadidiatou Ben Thiam Gregoire Sissoko Laboratory of Semiconductors and Solar Energy Physics Department Faculty of Science and Technology University Cheikh Anta Diop Dakar Senegal University Institute of Technology University of Thiès Thiès Senegal

From resolution of two-dimensional equation of heat in dynamic frequency regime, we have plotted evolution curves of temperature according to depth of material or in lateral direction. They will allow us to evaluate thermal behavior of towed material. Aim of study is to use fibers as a thermal insulating material by proposing a method for determining effective thermal insulation layer in dynamic frequency regime.

关键词： Thermal Transfer Heat Exchange Coefficient Frequency Dynamic Regime Fibers

Management of Urological Emergencies at the Nianankoro Fomba Hospital in Segou: A Case Report of 72 Patients

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Open Journal of Urology 2022年第5期12卷 242-247页

作者： Sory I. Kone mohamed traore Ibrahim Yattara Tièmoko traore Karifala Haidara Frank M. Omam Mamadou T. Coulibaly Honoré J. G. Berthe Mamadou L. Diakite Urology Department Nianankoro Fomba Hospital Ségou Mali Liberal Bamako Mali Department of Urology CHU Gabriel TOURE Bamako Mali Department of Urology CHU du point G Bamako Mali

PURPOSE: Our aim was to present the diagnostic and therapeutic aspects of urological emergencies in a regional hospital. MATERIAL AND METHODS: We conducted a prospective study over a period of 6 months (April 2021 to September 2021) collecting all the emergencies received by the on-call urology team at the Nianankoro Fomba Hospital in Segou. This team was led by a DES in urology under the supervision of a urological surgeon. We were interested in age, sex of patients, diagnosis, number of patients hospitalised and type of surgery performed in emergency. RESULTS: We registered 72 patients. The mean age of our patients was 58.8 years with extremes of 6 and 90 years. Acute bladder retention was represented in 61% and total haematuria in 24%. Renal colic was reported in 8%. Acute prostatitis was reported in 4% of cases, and acute pyelonephritis in 1%. Urogenital trauma accounted for 6%. CONCLUSION: Although underestimated, in our context, the management of urological emergencies remains a regular activity of the urology department in view of the number of patients managed. Bladder drainage remains the most frequent procedure.

关键词： Urological Emergency Nianankoro Fomba Hospital Diagnosis Treatment

Aeromagnetic Imagery as a Tool to Help Identify the Structures Controlling the Emplacement of the Kenieba Kimberlite Pipes (Western Mali, West African Craton)

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Open Journal of Geology 2023年第11期13卷 1177-1194页

作者： Baco traore Gbele Ouattara Marc Ephrem Allialy Ousmane Wane mohamed Moustapha Ndam Njikam Adama Youssouf Kone Souleymane Sangare Civil Engineering Geosciences and Geographic Sciences Laboratory Yamoussoukro C&#244te d’Ivoire Bamako Mali UFR-STRM University of Cocody Abidjan C&#244te d’Ivoire Laboratory of Mineralogy and Petrology Faculty of Sciences and Techniques University of Sciences Techniques and Technologies of Bamako Bamako Mali School of Geology and Mining Engineering University of Ngaoundere Ngaoundere Cameroon Faculty of Sciences and Technics (FST) University of Sciences Technics and Technologies of Bamako (USTTB) Bamako Mali

A kimberlite field, represented by fertile and sterile kimberlite pipes (chimneys) is located in the region of Kenieba (West Mali, Kédougou-Kenieba inlier, West African Craton). Thirty pipes and kimberlite dykes have been identified in the birimian formations, composed mainly of metasediments and granitoids, covered by sedimentary formations (sandstones and conglomerates) of Neoproterozoic age. All these formations are injected with dykes and doleritic sills of Jurassic age. The study of kimberlite pipes is still stammering in Mali, and thus no previous study has allowed to characterize the structures controlling their implementation. The reinterpretation of aeromagnetic data validated by field work indicates that the major structures of the Kenieba region are oriented NNE-SSW, NE-SW, E-W and NW-SE. These structures (faults and kimberlite pipes) are often associated with dolerite dykes, which would imply an injection of dolerite magma into the other formations. The location of the known kimberlite pipes makes it possible to say that the direction NW-SE is the most favorable for the exploration of kimberlites in the region of Kenieba.

关键词： Kimberlite Pipes Doleritic Dykes Fractures Aeromagnetism Kenieba Mali

Influence of Both Magnetic Field and Temperature on Silicon Solar Cell Base Optimum Thickness Determination

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Journal of Modern Physics 2019年第13期10卷 1596-1605页

作者： Nouh mohamed Moctar Ould mohamed Ousmane Sow Sega Gueye Youssou traore Ibrahima Diatta Amary Thiam Mamour Amadou Ba Richard Mane Ibrahima Ly Gregoire Sissoko Laboratory of Semiconductors and Solar Energy Physics Department Faculty of Science and Technology University Cheikh Anta Diop Dakar Senegal University Institute of Technology University of Thiès Thiès Sénégal Ecole Polytechnique de Thiès Thiès Sénégal

The minority carrier’s recombination velocity at the junction and at the back surface is used for the modeling and determination of the optimum thickness of the base of a silicon solar cell in the static regime, under magnetic field and temperature influence. This study takes into account the Umklapp process and the Lorentz effect on the minority carriers photogenerated in the base.

关键词： Silicon Solar Cell Diffusion Coefficient Surface Recombination Velocity Optimum Base Thickness Lorentz and Umklapp Processes

Endocranial Suppurations of Sinus Origin: Ratio of 3 Cases in Children at the Hospital in Mali

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Open Journal of Pediatrics 2021年第3期11卷 517-531页

作者： Bourama Kané Korotoumou Wélé Diallo mohamed maba Traoré Boubacar Mami Touré Mahamadou Dama Mody Abdoulaye Camara Guédiouma Dembélé Daouda Sissoko Oumar Coulibaly Mamadou Traoré Pediatrics Department of Mali Hospital Bamako Mali Medical Imaging Service Bamako Mali Neurosurgery Department of the Mali Hospital Bamako Mali Pediatric Service of the Commune Reference Health Center V Bamako Mali

Introduction: Intracranial suppurations are neoformed purulent collections including, in decreasing order, cerebral abscesses, subdural empyemas and extradural empyemas. Otorhinolaryngologic infections are one of the main causes, especially in older children and adolescents. We report 3 clinical cases of endocranial suppurations treated at the Mali Hospital. Clinical Cases: 1) Observation 1. IK was a 14-year-old boy, who was hospitalized in our department for fever, headache and left hemiplegia. The emergency brain scan showed a right frontal and interhemispheric subdural empyema associated with multifocal sinusitis. Surgical drainage associated with ceftriaxone: 100 mg/Kg/d in direct intravenous (DI), metronidazole: 10 mg/Kgs/12hours in slow intravenous (SI) for 15 days, gentamycin: 3 mg/Kgs/d in SI for 3 days, paracetamol 15 mg/Kgs/6hours in SI, 10% glucose serum: 100 ml/Kg/d were given. The bacteriological analysis of the pus came back sterile. The postoperative period was calm. 2) Observation 2. This was a 14-year-old boy with a history of headaches who was admitted to our department for left hemiplegia. An emergency brain scan showed a right pre-suppurative encephalitis associated with a right fronto-ethmoidal and maxillary sinusitis. He was put on ceftriaxone 100 mg/kg/d in DI for 21 days, gentamycin: 3 mg/Kg/d in SI for 3 days;metronidazole: 10 mg/kg/12hours in SI for 21 days, paracetamol: 15 mg/kg/6hours in SI. After 3 weeks of medical treatment, a follow-up brain scan revealed an interhemispheric and right subdural empyema. Surgical drainage was associated with the triple antibiotic therapy initially instituted. The bacteriological analysis of the pus was sterile. The postoperative course was calm. 3) Observation 3. N.M was an 11-year-old boy, who was admitted with fever and left hemiplegi

关键词： Sinusitis Endocranial Suppurations Mali Hospital

Complications of Sinusitis: About 9 Cases in the Ear Nose &Throat (ENT) Department of the University Hospital Gabriel Touréin Bamako

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Surgical Science 2016年第1期7卷 27-33页

作者： Kadidiatou Doumbia-Singare Abdoul Aziz Diakite Sidiki N’Dao Samba Karim Timbo Youssouf Sogoba Drissa Kanikomo Boubacary Guindo Siaka Soumaoro Lamine traore Fatogoma Kone Fatou Sylla mohamed Keita Alhousseini Ag mohamed ENT Department and Neck Surgery of the University Hospital Gabriel Toure Bamako Mali Neurosurgery Department of the University Hospital Gabriel Toure Bamako Mali Pediatric Department of the University Hospital Gabriel Toure Bamako Mali African Institute of Tropical Ophthalmology Bamako Mali

Objective: This study aims to analyze clinical, paraclinical and therapeutic aspects of sinusitis complications in the Otorhinolaryngology department at the teaching hospital of Gabriel Toure in Bamako. Materials and methods: This descriptive and longitudinal study was conducted on 12 months from March 2012 to February 2013 in 9 cases of sinusitis complications in the department of Otorhinolaryngology at the University Hospital Gabriel Toure in Bamako. Results: The average age of patients was 22.7 years;a median of 19 years within 6 men and 3 women with almost 12.9 days of care seeking duration. The factors of risky were the use of nonsteroid anti-inflammatory drugs NSAID (4 cases), maxillofacial trauma (1 case) and HIV (1 case). Facial pain was the major symptom, such as frontal oedema, rhinorrhea with pus shedding and nasal obstruction. Computer tomography was used for complications specification. Frontal sinusitis was the most encountered with subperiosteal abscess (44.4%). Streptococcus pneumoniae was identified in 3 cases. Medical treatment associated to surgery was conducted on 7 patients. Two cases of death have been registered. Conclusion: The complicated sinusitis is an emergency and dangerous disease requiring specific care by a multidisciplinary staff. Much of complications are commonly encountered despite the antibiotic era.

关键词： Sinusitis Complications Diagnosis Treatment Surgery

Epidemiological Profile of Newborns Who Died during Their Hospitalization in the Neonatology Unit, Mali Hospital

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Open Journal of Pediatrics 2022年第2期12卷 424-432页

作者： Korotoumou Wéllé Diallo Bourama Kané Aboubacar Sangaré Kadidiatou Touré Fatoumata Léonie François Diakité Mamadou Traoré mohamed maba Traoré Mamadou Berthé Mariam Maiga Abdoul Aziz Diakité Fatoumata Dicko Traoré Department of Pediatrics Mali Hospital Bamako Mali Department of Pediatrics Gabriel Touré University Hospital Bamako Mali Reference Health Center of Commune V Bamako Mali Department of Medical Imaging Mali Hospital Bamako Mali National Institute of Public Health Bamako Mali Reference Health Center of Commune VI Bamako Mali

Introduction: Neonatal mortality is a serious problem, particularly in developing countries. Objective: To study the epidemiological and clinical profiles of newborns who died during their hospitalization in the neonatology unit of the hospital in Mali. Methodology: This was a prospective study over a 12-month period (January 1 to December 31, 2020) including all newborns aged 0 - 28 days who died during their hospitalization. Results: A total of 424 neonates were hospitalized in neonatology, 54 died, or 12.73%. Newborns aged 0 - 7 days at admission were the most represented at 79.63% and 94.4% were full-term babies. The male gender was dominant with a ratio of 1.17. The following characteristics were frequently observed in the mothers: not educated (46.3%), poor 75.9%, living in urban areas (68%), housewives 75.4%, and having had less than 4 antenatal care visits (53.7%). For babies, respiratory distress and hyperthermia were the most common reasons for hospitalization (37% and 22.2%, respectively), with 40% being resuscitated at birth. Infection and perinatal anoxia were the most frequent diagnoses, respectively 96.3% and 37%. The death occurred within the first three days of hospitalization in 60% of cases. Conclusion: In order to reduce the mortality rate in our facilities, monitoring of pregnancy and delivery, and correct management of newborns both at birth and in the pediatric wards are important.

关键词： Newborn Death Hospital in Mali

Epidemioclinical Profile and Immediate Outcome of Low Birth Weight at the Reference Health Center in Commune VI of the District of Bamako, Mali

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Open Journal of Pediatrics 2023年第2期13卷 235-243页

作者： Mariam Maiga Oumar Coulibaly Mariam traore Hibrahima Diallo Korotoumou W. Diallo Bourama Kane Alou Samake Mamadou Diallo Moussa Konate Mamadou Keita mohamed Saydi Ag Med Elmehdi Elansari Diarra Sidy Moctar Mamadou traore Djibril Kassogue Kadiatou Ba Pierre Togo Pediatric Service of the Reference Health Center of the Commune VI Bamako Mali Pediatric Department of CHU Gabriel Touré Bamako Mali Mali Hospital Bamako Mali Pediatric Service of the Reference Health Center of the Commune V Bamako Mali Timbuktu Regional Hospital Bamako Mali Pediatric Service of the Reference Health Center of the Commune II Bamako Mali

Introduction: Low birth weight is responsible for 9.1 million child deaths each year worldwide. It is the leading cause of perinatal and infant mortality. The objective of this work was to determine the epidemio-clinical profile as well as the future of low birth weight at the Reference Health Center of commune VI in the district of Bamako, Mali. Methods: Our study was descriptive and prospective over a year from April 1, 2018 to March 31, 2019. Data were taken from hospital records and newborn referral/evacuation forms. Data processing was performed using Epi Info software version 3.5.4 and Word. Results: The frequency of low birth weight was 34.94%. Multiparity accounted for 47.84%, sex ratio was 0.93, maternal arterial hypertension was present in 41.66%, genitourinary infection was in 58.37% and delivery was by low way in 86.12%. The majority of newborns had a gestational age between 28SA-33SA (56.52%) and a weight between 1501-1999 grams (47.36%). Mortality accounted for 18.66%. Conclusion: Low birth weight is common in our settings with modifiable risk factors. Practitioners must play on them to minimize its importance.

关键词： Low Birth Weight Future Risk Factors Bamako Mali

Electrical Parameters Determination from Base Thickness Optimization in a Silicon Solar Cell under Influence of the Irradiation Energy Flow of Charged Particles

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Energy and Power Engineering 2020年第1期12卷 1-15页

作者： Ousmane Sow Mamadou Lamine Ba mohamed Abderrahim Ould El Moujtaba Youssou traore El Hadji Sow Cheikh Tidiane Sarr Masse Samba Diop Grégoire Sissoko University Institute of Technology University of Thiès Thiès Sénégal Laboratory of Semiconductors and Solar Energy Physics Department Faculty of Science and Technology University Cheikh Anta Diop Dakar Senegal Ecole Polytechnique de Thiès Thiès Sénégal

In this work, we study the characteristics I-V and P-V of a silicon solar cell as well as its fill factor, its electrical power from the optimum thickness obtained in the base under variation of the irradiation energy flow of charged particles. The recombination velocity at the junction corresponding to the maximum power point was also deduced.

关键词： Silicon Solar Cell Flow Irradiation Energy Recombination Velocity Optimum Base Thickness