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Journal of Power and Energy Engineering 2024年第9期12卷 19-36页

作者： Abou abdoulaye sow Papa Yona Boubacar Mane Mamma Sawaneh Halidou Kafando Department of Agriculture and Environment Science University of The Gambia Kanifing The Gambia Department of Economic and Management Sciences Gaston Berger University Saint-Louis Senegal

This article examines the determinants of the adoption of solar pumping systems (PV) by vegetable farmers in the Niayes area of Senegal. To measure the determinants, we used a sequential logit model to translate the adoption process from becoming aware of solar pumping systems to testing them, i.e. using them at least once, and then continuing to use them over time. The results show that the main variables affecting awareness of the use of solar pumping systems (PV) are age, marital status, experience, access to credit, the farmer’s knowledge of climate change, the farmer’s origin in the Thiès region and length of time in the Niayes area. The first use of PVs is influenced by factors such as the size of the plot, the distance of the plot from the main road or from the market. Finally, the decision to adopt or continue use is influenced by gender, experience, household size and access to credit. Surprisingly, access to credit does not affect the first use of solar pumping systems, but plays a key role in their continued use.

关键词： Solar Pumping Systems Adoption Vegetable Cultivation Niayes (Senegal)

Otorhinolaryngological (ORL) and Cervicofacial Injuries Resulting from Road Accidents within the Otorhinolaryngology (ORL) Department of the Regional Hospital of Mamou

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International Journal of Otolaryngology and Head & Neck Surgery 2024年第1期13卷 16-28页

作者： Mamadou Mouctar Ramata Diallo Ibrahima Diallo Alsény Camara Mamadou Aliou Diallo Raphan Madi Kaba Keita abdoulaye sow Alsény Cisse Sory Sacko Mamadou Gouraissiou Diallo abdoulaye Keita Alpha Oumar Diallo Ear Nose and Throat (ENT) Department Regional Hospital Mamou Mamou Guinea Ear Nose and Throat (ENT) Department National Hospital Donka Conakry Guinea Ear Nose and Throat (ENT) Department Regional Hospital N’zérékoré N’zérékoré Guinea Ear Nose and Throat (ENT) Department Regional Hospital Labé Labé Guinea Ear Nose and Throat (ENT) Department National Hospital Ignace Deen Conakry Guinea

Introduction: Otorhinolaryngological (ORL) and cervicofacial traumas encompass injuries affecting the neck, face, and ORL region, resulting from external influence. The objective of this study was to conduct an epidemiological and clinical analysis of ORL and cervicofacial injuries observed in victims of road accidents treated at the Otorhinolaryngology (ORL) department of the Regional Hospital of Mamou. Materials and Methods: This prospective and descriptive study was conducted over a period of 12 months, from January 1st to December 31st, 2021, within the Otorhinolaryngology (ORL) department of the Regional Hospital of Mamou. It included patients hospitalized for ORL and/or cervicofacial traumas resulting from road accidents during the study period. Results: A total of 348 cases were included, representing 36.22% of all traumas related to road accidents (AVP) within the Regional Hospital of Mamou. The average age of the patients was 26.44 years, with a sex ratio of 3.83, favoring males. The dominant socio-professional category was students, encompassing 32.47% of cases. Road accidents were mainly associated with motorcycle use (31.32% motorcycle-to-motorcycle, 24.43% motorcycle skidding, 13.51% motorcycle-pedestrian). Facial region injuries were the most common, accounting for 69.03% of cases, followed by rhinological injuries (17.28%) and otological injuries (13.69%). Associated injuries were predominantly closed head traumas (52.55%) and lower limb fractures (20.41%). Imaging was underutilized. Regarding surgical interventions, reconstructive surgery was the most predominant, accounting for 52.51% of cases, with a management timeframe of 30 minutes to 12 hours for 99.72% of patients. Conclusion: Road traffic accidents remain a serious public health issue, primarily affecting young males. Emphasis should be placed on road safety measures to reduce the frequency of these accidents.

关键词： ENT Injuries Road Accidents Regional Hospital of Mamou

Assessment of Thyroidectomies in Children at the ENT Department of the Thiès Regional Hospital, about 29 Cases over 16 Years (2003-2018)

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International Journal of Otolaryngology and Head & Neck Surgery 2023年第6期12卷 365-374页

作者： Mamadou Mouctar Ramata Diallo Ibrahima Diallo Mamadou Aliou Diallo Aminata Mbaye Alsény Camara Ndiassé Ndiaye Oumou Amadou Diallo abdoulaye sow Sory Sacko Sayon Kourouma Alpha Oumar Diallo Mamadou Sakoba Barry abdoulaye Keita ENT Department Mamou Regional Hospital Mamou Guinea ENT Department Donka National Hospital Conakry Guinea ENTDepartment Thiès Regional Hospital Thiès Senegal ENT Department Ignace Deen National Hospital Conakry Guinea General Surgery Department Ignace Deen National Hospital Conakry Guinea

Thyroidectomy is a complete or partial surgical removal of the thyroid gland. The aim was to review the particularities of thyroid surgery in children, to review our operative indications and our working method as well as the results by comparing them with the data in the literature. This was a retrospective study covering a sixteen-year period from January 2003 to December 2018. We collated 29 patient records from 3 to 15 years of age. The epidemiological aspect, the indication and the operative gesture, the anatomopathological result were studied. Data were processed using Epi Info version 3.5.4 and Microsoft Excel 2010. Our study shows that thyroid surgery in children accounted for 2% of all thyroidectomies performed (1350 cases). Females were most affected, with a sex ratio of 0.16. The mean age was 12 years, with extremes of 3 and 15 years. Three indication groups: Graves’ disease 62%, heteromulti nodular goiter (HMNG) 28%, thyroid nodule 10%. Thyroid surgery was total in 65.5% of cases;subtotal thyroidectomy in 20.7%. Partial thyroidectomy was performed in 13.7% of cases. We dissected 54 recurrent nerves, and the parathyroids were controlled. Drainage was systematic. We noted one complication (3.4%). It involved immediate postoperative dyspnea requiring a life-saving tracheotomy, and decanulation was performed 48 hours after surgery.

关键词： Thyroidectomy Child Indication

Fishbone-Type Pharyngeal Foreign Body with Cutaneous Migration in the ENT Department of the Mamou Regional Hospital: A Case Report

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International Journal of Otolaryngology and Head & Neck Surgery 2023年第6期12卷 385-389页

作者： Mamadou Mouctar Ramata Diallo Mamadou Aliou Diallo Ibrahima Diallo Oumou Amadou Diallo abdoulaye sow Alsény Cissé Sory Sacko Alsény Camara Sayon Kourouma Alpha Oumar Diallo abdoulaye Keita Mamadou Sakoba Barry ENT Department Mamou Regional Hospital Mamou Guinea ENT Department Donka National Hospital Conakry Guinea ENT Department Labé Regional Hospital Labé Guinea Near Nose and Throat Department Ignace Deen National Hospital Conakry Guinea General Surgery Department Ignace Deen National Hospital Conakry Guinea

We report a case of pharyngeal foreign body with cutaneous migration in the form of a fishbone in a 24-year-old rural resident, presented with odynophagia, dysphagia, pain and left antero-latero-cervical swelling fistulated to the skin following ingestion of a fishbone during a meal that had been evolving for 2 weeks. Vital parameters were normal, with an unremarkable psychological examination. Clinical examination revealed a left antero-latero-cervical swelling that was painful to palpation, fistulous to the skin and draining frank pus, revealing a sharp fishbone. A standard X-ray showed that the foreign body had exited the pharynx and was located in the soft tissues of the lower neck. An exploratory cervicotomy was performed, allowing extraction of a serrated fishbone. The post-operative course was favorable.

关键词： Pharyngeal Foreign Body Migrant Otolaryngology Mamou Regional Hospital

Contribution to Comparative Study of Physical-Chemical Characteristics of Diack Basalt and Bandia Limestone for Use in Railway Engineering

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Geomaterials 2020年第2期10卷 25-34页

作者： abdoulaye Diedhiou Libasse sow Adama Dione Civil Engineering Department Higher Polytechnic School Cheikh Anta Diop University Dakar Senegal Institute of Earth Sciences Cheikh Anta Diop University Dakar Senegal

This paper presents a comparative study of Physical-Chemical characteristics of Limestone and Basalt (from Senegalese quarries). First, chemical tests show that Basalt is richer in silica 51.59% versus 2.84% for Limestone. Basalt is made up of silica minerals and essentially carbonated minerals with a CaO percentage of 50.05%. Chemical results also show that Basalt is richer in iron 12.71% versus 0.44% for Limestone. Finally, they revealed a fire loss of 40.91% for Limestone and 2.44% for Basalt. Second, physical analysis results show that Diack Basalt has the best characteristics with a flattening coefficient of 5% between 5% and 20%;the percentage of pollutants is 0.36% less than 1%;the Los Angeles coefficient is 12.21% below 15, while Bandia Limestone gives a flattening coefficient of 3%;the Los Angeles coefficient of 40.17% and the percentage of pollutant (2.4%) well above 2%. It is noted that the percentage of Limestone pollutant is too high. These important results show the net advantage of Basalt compared to Limestone in terms of physical-chemical characteristics.

关键词： Ballast Railways Basalt Limestone Physical-Chemical Characteristic

Experimental Characterization of Shape of an Aggregate by a Numerical Value—Application to Senegalese Basaltic Aggregates for Rail Transport

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Open Journal of Civil Engineering 2020年第2期10卷 131-142页

作者： abdoulaye Diedhiou Libasse sow Ndeye Mareme Diop Civil Engineering Department Higher Polytechnic School Cheikh Anta Diop University of Dakar Dakar Senegal

This article first talks about railways in general and ballast in particular. An inventory is then made on the modernization of the Senegalese ballast railways. In the second phase, an experimental work of characterization of basaltic aggregates of Diack (Locality of Ngoundiane, Thiès region, Senegal) is presented. The grain size studied is 25/50 mm as for any material studied for use as railway ballast. Experimental work presented consists of the characterization of the shape of an aggregate using the NF P 18-301 standard. The test consists of comparing the volume of the aggregate to that of an equivalent sphere with the largest diameter of the aggregate, by calculating the average volume coefficient. With a Representative Elementary Volume (REV) of 6 aggregates, the volume coefficient “Cv” fluctuates between 0.27 and 0.49 with an average volume coefficient of 0.39 which is well above 0.15. The grains studied are polyhedral and therefore have a high mechanical resistance.

关键词： Ballast Rail Transport Basalt Shape Volume Coefficient

Complications of Circumcision: Epidemiological, Anatomo-Clinical and Therapeutic Aspects

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Open Journal of Urology 2023年第10期13卷 433-440页

作者： Aboubacar Traore Issa Thiam Ousmane sow Modou Sene Ndiath abdoulaye sow Yaya Urology Department Regional Hospital of Saint-Louis Saint-Louis Senegal

Circumcision refers, in its most widespread form, to the total or partial removal of the foreskin, leaving the glans exposed. It is a ritual practice imposed by Mosaic law for Israelites, a tradition for Muslims, a rite of passage to adulthood for many people of Africa and the East. Circumcision is also a widely used therapeutic surgical procedure for a number of balanopreputial affections. The aim of this study was to list cases of circumcision complications received in a urological hospital (CHR Saint Louis) and to analyze their epidemiological, anatomo-clinical and therapeutic aspects. Patients and methods: This was a retrospective, descriptive study of circumcision complications, carried out in the urology department of the Saint Louis regional hospital in Senegal over a 5-year period (January 1, 2013 to December 31, 2017). Results: Thirty-three (33) complications of circumcision were collated. The mean age of patients was 7.63 years [9 months - 16 years]. Duration of time for Consultation varied according to the type of complication, with an average of 1.6 years [1 day - 10 years]. Penile granuloma accounted for 36.3% of the complications (n = 12), local infection for 30.3% (n = 10) and urethro-cutaneous fistula for 18.2% (n = 6). For six patients with urethro-cutaneous fistula, we performed urethro-cutaneous splitting in 5 patients, while the same complication necessitated urethroplasty in another patient. We noted five cases of verge plasty for verge granuloma, one glan reimplantation and one glan plasty for the two patients with glans amputation. Conclusion: Circumcision is a medical procedure widely practised throughout the world for medical, cultural and aesthetic reasons. In Africa, the lack of health coverage and the shortage of doctors explain why this surgical procedure is so common. In Senegal, circumcision is still carried out in the majority of cases by paramedical staff, which explains the high rate of complications.

关键词： Circumcision Complications Penile Fistula Glans Amputation

Urban schistosomiasis and associated determinant factors among school children in Bamako, Mali, West Africa

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Infectious Diseases of Poverty 2015年第1期4卷 24-35,23页

作者： abdoulaye Dabo Adama Z Diarra Vanessa Machault Ousmane Touré Diarra Sira Niambélé abdoulaye Kanté abdoulaye Ongoiba Ogobara Doumbo Department of Epidemiology of Infectious Diseases Faculty of MedicinePharmacy and DentistryUniversity of Techniques and Technologies of BamakoBox 1805Bamako UMI 3189Mali Unitéd’entomologie médicale Equipe 7Maladiesémergentes et moustiquesInstitut de Médecine Tropicale du Service de Santédes ArméesAllée du Médecin Colonel JamotParc du PharoBP6010913262Marseille Cedex 07France

Background:Schistosomiasis is classically described as a rural disease that occurs in areas with poor sanitary ***,over recent decades,there has been an expansion of schistosomiasis foci towards urban areas faced with a rapid and disordered *** Bamako,Mali,the impact of environmental change on vector-borne diseases such as schistosomiasis is not well *** study sought to identify the presence of schistosomiasis transmission hotspots in *** this perspective,we aimed to describe the risk factors of the endemization and maintenance of *** and methods:A cross-sectional study was carried out in the six municipalities(communes)in *** information was obtained from earth observation satellites in order to maximize ecological ***-nine blocks of 200 m x 200 m were *** selected a school inside or nearest to each block for urine and stool samples *** study cohort was school children aged between eight and 15 *** Kato-Katz technique and filtration were used for Schistosoma mansoni and *** ova research in stools and urine,*** schools and snail breeding sites were *** malacological surveys were conducted between October 2011 and February *** analysis was used to identify independent predictors of being infected with ***:The prevalence rate of *** was 14.7%(n=1,761)and that of *** 1.5%(n=1,491).Overall,the urinary form was endemic in 76.6%of *** infection significantly varied between the municipalities(p<0.001).It was also more prevalent on the left side of the Niger River than the right side(17.4%vs.9.5%respectively;p<0.001).The vicinity to snail breeding sites(OR=3.677;95%IC[2.765–4.889];p<10-3)and parents’occupations(OR=7.647;95%IC[2.406–24.305];p<0.001)were the most important risk factors associated with *** infection *** pfeifferi,Bulinus

关键词： Schistosomiasis Snails Breeding sites Endemization Bamako Mali

A unified 3D space-based navigation model for seamless navigation in indoor and outdoor

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International Journal of Digital Earth 2021年第8期14卷 985-1003页

作者： Jinjin Yan Sisi Zlatanova abdoulaye Diakité College of Intelligent Systems Science and Engineering Harbin Engineering UniversityHarbinPeople’s Republic of China GRID School of Built EnvironmentFaculty of ArtsDesign and ArchitectureUniversity of New South WalesSydneyAustralia

Seamless navigation has attracted lots of attention and many methods have been reported in the literature or made available as commercial *** process of navigation can be interpreted as a continuous movement of 3D objects from one unoccupied 3D indoor/outdoor space to *** a technical perspective,a 3D navigation model is one of the critical components that should be available to perform successful navigation.A major approach to build a unified navigation model to support seamless path computation is linking indoor navigation networks to outdoor road/street-based *** of different sources of indoor and outdoor navigation networks,the major approach fails to build up true seamless navigation *** regards to this,we propose a unified 3D space-based navigation model(U3DSNM).The presented model ensures all types of spaces for navigation(indoor,semi-indoor,semi-outdoor,and outdoor)have the same representation,management methods,and network derivation approach,thereby building up unified navigation networks to support seamless navigation paths *** model can be linked to the international standards(data models)that are also based on spaces,such as IndoorGML and the on-going version of CityGML *** navigation path planning cases show the feasibility of U3DSNM.

关键词： Indoor outdoor 3D space seamless navigation navigation model

Reflected solutions of backward stochastic differential equations driven by G-Brownian motion

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Science China Mathematics 2018年第1期61卷 1-26页

作者： Hanwu Li Shige Peng abdoulaye Soumana Hima School of Mathematics Shandong University Jinan 250100 China Zhongtai Institute of Finance Shangdong University Jinan 250100 China Institut de Recherche Mathdmatiques de Rennes Universitd de Rennes 1 Rennes Cedex 35042 France Departement de Mathdmatiques Universite de Maradi Maradi BP 465 Niger

In this paper, we study the reflected solutions of one-dimensional backward stochastic differential equations driven by G-Brownian motion. The reflection keeps the solution above a given stochastic process. In order to derive the uniqueness of reflected G-BSDEs, we apply a "martingale condition" instead of the Skorohod condition. Similar to the classical case, we prove the existence by approximation via penalization. We then give some applications including a generalized Feynman-Kac formula of an obstacle problem for fully nonlinear partial differential equation and option pricing of American types under volatility uncertainty.

关键词： G-expectation reflected backward stochastic differential equations obstacle problems for fully nonlinear PDEs