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Journal of Environmental Science and Engineering(B) 2023年第3期12卷 105-114页

作者： mohamed lamine Komara Adama Moussa Sacko Aboubacar Diallo Cheick Ahmed Tawel Camara Mamadou Kabirou Bah Teacher-Researcher Department of Biology Gamal Abdel Nasser University of Conakry Republic of Guinea Laboratory technique Higher Institute of Technology of MamouRepublic of Guinea DGA-Research/ISAU Conakry 324 Republic of Guinea Director of the Biochemistry degree program at Gamal Abdel Nasser University of Conakry Republic of Guinea Center for Environmental Studies and Research(CERE) Conakry 324 Republic of Guinea

As part of the determination of the possible impact of human activities on surface waters, case of Lake Sonfonia, six sampling sites were selected according to their solicitation by the population and their exposure to probable sources of pollution. The objective of this work is to monitor the physico-chemical quality of the waters of Lake Sonfonia during the low water level (March) and during the flood period (August) of the year 2021. Two sampling campaigns of water were carried out in dry weather and two others in cold weather. Parameters such as temperature, pH, EC (Electrical Conductivity), dissolved oxygen, TDS (Total Dissolved Solids) were measured in situ. Suspended matter, phosphate, nitrate, nitrite, sulphates, total iron, COD (Chemical Oxygen Demand) were measured in the laboratory by the colorimetric method. Stata 15 software was applied for the statistical analysis of the data and the correlation test between the parameters gave highly significant correlations. It has been noted that the situation is not very good and that this pollution comes mainly from human activities.

关键词： Surface water physico-chemical parameters Lake Sonfonia anthropogenic eutrophication.

Glomerular Filtration Rate of Children with Sickle Cell Disease Compared to Non-Sickle Cell Patients in Donka Pediatric Emergencies and SOS Drepano-Guinea Center

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Open Journal of Pediatrics 2023年第4期13卷 562-567页

作者： mohamed lamine Diallo Emmanuel Camara Mamadou Moustapha Diop Mamadou Cire Barry Fatoumata Binta Diallo Aissata Barry Saliou Bellanrcisse Diallo Narcisse Idohou Ganin Paul Ulrich N’dri N’gotta Mamdy Dramé Telly Sy mohamed lamine Kaba Paediatric Emergency Donka National Hospital Conakry Guinea Paediatrics Department Donka National Hospital Conakry Guinea Department of Paediatrics H&#244pital National Ignace Deen Conakry Guinea Centre SOS Drépano-Guinée Conakry Guinea Department of Gynaecology and Obstetrics H&#244pital National Ignace Deen Conakry Guinea Haemodialysis Department Donka National Hospital Conakry Guinea

Introduction: Our study focused on the evaluation of renal function in children with sickle cell disease compared to children without sickle cell disease at the pediatric emergency unit of the Donka National Hospital and SOS Drepano-Guinea center. Patients and Methods: This was a cross-sectional descriptive and analytical study lasting 3 months (October 1 to December 31, 2020). Were included, all sickle cell and non-sickle cell children aged 0 to 15 received on an outpatient basis and had undergone an exploration of renal function (serum creatinine and urine dipstick). Results: We performed the urine dipstick and serum creatinine in 75 children, 45 of whom were sickle cell and 30 were not sickle cell. 27 of our patients or 36% had a reduction in GFR, among them 9 or 20% were sickle cell and 18 or 60% were not sickle cell. The most affected age group was 5 to 9 years in sickle cell (66.7%) and non-sickle cell (38.9%). In sickle cell patients, 9 cases (100%) had mild renal failure (IRL). Non-sickle cell patients, had 14 cases or 77.8% of IRL and 4 cases (22.2%) of moderate IR. Sickle cell disease and antibiotics which had the respective p-value (0.01);(0.02), were statistically significant with the onset of renal failure. Conclusion: Several factors including sickle cell anemia and antibiotics are believed to be involved in lowering GFR. It would be essential to detect early the children received in consultation.

关键词： Flow Filtration Glomerular Child Sickle Cell Disease

Urinary Sphincter Disorders of Neurological Origin: Prognostic Aspects in the Neurology Department of the Ignace Deen National Hospital

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Open Journal of Urology 2023年第3期13卷 92-99页

作者： mohamed Asmaou Bangoura mohamed lamine Touré mohamed Traoré Aliou Talibé Diallo Mamadou Oury Mané Alhassane Fadiga Gouled Houssein Moussa Karinka Diawara Ibrahima Siré Diallo Cissé Fodé Abass Neurology Department CHU of Conakry Conakry Guinea

Introduction: Complications of Urinary sphincter disorders of neurological origin can be life threatening. The objective of this study was to describe the prognosis of urinary sphincter disorders during neurological conditions. Methods: This was a six-month analytical study conducted at the neurological unit of the Hôpital national Ignace Deen. Including patients with urinary sphincter disorders following a neurological condition;Chi-square, Fischer, and Student’s t-tests were used for variables with a p value less than 0.10 and then included in a logistic model with a significance level set at 0.05 and a 95% confidence interval. Results: We collected 1081 patients among whom, 324 presented, that is to say a frequency of 30%, which concerned subjects aged 57.3 ± 16.4 years with a slight female predominance 50.3%. Urinary incontinence (80.6%) was associated with complications such as urinary tract infection with a high proportion of cerebral damage (92.3%). HIV infection (P = 0.015), bedsores (P = 0.049), and inhalation pneumonia (P = 0.001) were the main poor prognostic factors. Conclusion: Urinary sphincter disorders are elements of poor prognosis, both vital and functional, concerning elderly subjects with a predominance of urinary incontinence. HIV infection, bedsores, pneumopathy are poor prognostic factors.

关键词： Urinary Sphincter Disorders Incontinence Retention Neurology

SMD露天矿粉尘排放对环境的影响与减排技术研究

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SMD露天矿粉尘排放对环境的影响与减排技术研究

作者：福法纳（mohamed lamine Fofana）中国矿业大学

学位级别：硕士

从采矿历史的最早几个小时开始,矿物市场参与者就一直在努力满足对矿物的需求。为了继续满足当前和将来的需求,矿山数量已经并将继续增加。地雷数量的增加,虽然对国家发展有利,但却是通过造成环境影响而实现的,这使当今的人们相信地雷... 详细信息

从采矿历史的最早几个小时开始,矿物市场参与者就一直在努力满足对矿物的需求。为了继续满足当前和将来的需求,矿山数量已经并将继续增加。地雷数量的增加,虽然对国家发展有利,但却是通过造成环境影响而实现的,这使当今的人们相信地雷有害无益。露天和地下采矿方式均会影响环境,但露天矿的影响（特别是与粉尘排放有关）的影响要大于地下。露天煤矿排放的粉尘会影响空气,水,土壤和生物多样性的质量,如果无法找到解决办法,这可能会导致即使不是不可能的情况下,周围居民的地雷也将非常困难。为了解决这个问题,有必要知道可以帮助有效控制粉尘的粉尘排放源。本文以SMD露天矿为研究背景。首先,根据对周围环境及其要素和人口健康的分析,确定了粉尘影响。excel用于分析获得的数据并制作其图形。其次,根据不同的采矿作业,总结了露天矿生产各方面扬尘的成因和扬尘的一些来源。列出了每个环节中粉尘排放的比例,并确定了本文的核心内容。Power Point软件用于图解每个已识别粉尘排放源的粉尘排放过程,以便对粉尘排放源进行详细说明。高速相机用于在SMD上拍摄采矿作业的照片和视频。这使得确定排放源和排放情况成为可能。第三,研究了SMD露天矿的粉尘控制技术,并提出了一些建议,以帮助他们改进粉尘控制技术。最后,研究区域的条件和矿山粉尘排放控制的一些技术。在这些研究过程中,根据研究区域的条件分析了粉尘控制技术的效率,技术经济性和环境方面,以便找到适合SMD的技术。根据研究区域的条件,向SMD提出了卡车速度控制以及加工厂和输送机覆盖范围的控制技术,作为控制粉尘排放的良好技术。本文的结论可以为矿山粉尘排放的控制提供理论和实践参考。本文包括38个数字,13个表格和73个参考文献。

关键词：粉尘露天矿环境粉尘排放源粉尘控制技术粉尘对环境的影响

Respiratory Complications of Measles in the Pediatric Ward of the Regional Hospital of Kindia/Guinea

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Open Journal of Pediatrics 2023年第5期13卷 727-733页

作者： mohamed lamine Diallo Mamadou Ciré Barry Fatoumata Binta Diallo Kaba Bangoura Hessou Agossi Nouvidomé Chimène Telly Sy Urgences Pédiatriques Donka National Hospital Conakry Guinea Service de Pédiatrie H&#244pital National Ignace Deen Conakry Guinea Service de Pédiatrie Donka National Hospital Conakry Guinea Service de Pédiatrie H&#244pital Régional de Kindia Kindia Guinea Service de Gynécologie-Obstétrique Hopital National Ignace Deen Conakry Guinea

Introduction: Measles is a highly contagious infectious disease caused by the measles virus belonging to the morbillivirus genus, the measles morbillivirus species and the Paramyxoviridae families. The aim was to study respiratory complications due to measles in children aged 1 to 15 in the pediatric ward of the Kindia regional hospital. Materials and Methods: A transversal descriptive study was carried out in the pediatrics department of the Kindia Regional Hospital from October 1, 2019, to March 31, 2020, on children aged 1 to 15 years hospitalized for measles with respiratory complications. Results: 53 cases of measles were recorded, i.e. 11.71% of hospital pathologies including 32 cases of respiratory complications, i.e. 60.38% with an M/F sex ratio of 1.66, male predominance of 62.5%, and a mean age of 4.10 ± 2.8 years. The outcome was favorable in 90.62% of our patients. The mortality was 9.38% with an average hospital stay of 6.8 ± 3.04 days. Conclusion: The respiratory complication of measles is a serious pathology due to the risk of mortality that it can cause, a consultation followed by rapid treatment can contribute to a reduction in complications and a faster cure.

关键词： Measles Respiratory Complication Child Kindia

Management of Omphalocele in the Pediatric Surgery Department of Donka National Hospital

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Open Journal of Pediatrics 2024年第6期14卷 1090-1100页

作者： mohamed lamine Sadou Sacko Thierno Saidou Barry Balla Keita Moussa Conde Ibrahim Fofana Seydou Keita Daniel Agbo-Panzo Department of Paediatric Surgery Conakry University Hospital Conakry Guinea Gamal Abdel Nasser University Conakry Guinea Conakry Military Hospital Conakry Guinea Department of General Surgery CHU Ignace Deen Conakry Guinea

Introduction: Omphalocele is an embryopathy of the first ten weeks of gestation. It corresponds to a defect in the abdominal wall through which viscera contained in a sac constituted by the amniotic membrane and centered by the umbilical cord are exteriorized. The objective of this work was to study the diagnostic modalities and the impact of our therapeutic choices on the outcome of the management. Material and Methods: We carried out a prospective study on patients with omphalocele admitted to the pediatric surgery departments of the HND, during a period spread over 4 years, between January 2017 and December 2020. Results: we collected 55 files (i.e., 13.7 cases/year). There were 38 boys and 17 girls (sex ratio 2.2) with an average age of 1.9 days. We found 15 cases (27%) of type I and 40 cases (73%) of type II according to the AITKEN classification. Fifteen cases (27%) benefited from surgical treatment and 45 cases (73%) benefited from conservative treatment (Grob). Two surgical methods were used: Primary parietal closure, which was used in 10 cases (66.7%), and the GROSS method, which was used in 5 cases (33.3%). We obtained an improvement of 40 cases (73%) and 15 cases (27%) of death. Conclusion: our work reported our experience in the management of omphalocele and the difficulties of postoperative resuscitation.

关键词： Omphalocele Tannage Gross Embryopathy

Diagnosis of Male Hypogonadism: Experience of a Subsaharan African Endocrinology Department: Transversal Study from January 1^st, 2020 to July 31^st, 2022

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Open Journal of Endocrine and Metabolic Diseases 2023年第11期13卷 217-226页

作者： Nafy Ndiaye Ngone Diaba Diack Yakham mohamed Leye Mouhamed Mbar Niang Amadou lamine Cisse Yousra Benani Abdoulaye Leye Internal Medicine/Endocrinology-Diabetology Department Teaching Hospital of Pikine Cheikh Anta Diop University Dakar Senegal

Introduction: Hypogonadism should be suspected in a man who has symptoms and signs of testosterone deficiency. Clinical manifestations depend on the severity and duration of testosterone deficiency, whether the testicular deficit is concerning only androgen synthesis, spermatogenesis, or both. The objective of our study was to evaluate the clinical and aetiological characteristics of male hypogonadism in Dakar’s suburb. Patients and methods: We conducted a transversal study from January 1st, 2020 to July 31st, 2022. We included all male patients aged at least 14 years old with hypogonadism confirmed by a low level of early-morning free testosterone based on two different dosages. For all patients included, sociodemographic and diagnostic parameters were collected by using a pre-established registration form. Results: In total, 20 patients were selected. The average age was 36.3 years old [14 - 62 years old]. Half of the patients were overweight. Five patients had an abdominal circumference greater than 94 cm (37 inches). The other comorbidities found in our patients were type 2 diabetes (n = 1), hypertension (n = 1) and primary hypercholesterolemia in 2 patients. The functional signs reported by the patients were: couple’s infertility in 17 patients, decreased libido in 14 patients, erectile dysfunction in 13 patients, premature ejaculation in 2 patients and anejaculation in 4 patients. The physical examination revealed a bilateral testicular atrophy in 17 patients and a unilateral testicular atrophy in 2 patients;no patient had varicocele or urethral meatus abnormalities. Ten patients presented a micropenis. A eunuchoid morphotype was present in 6 patients and a short stature was noted in 2 patients. It was peripheral hypogonadism (HH) in 18 patients and hypogonadotropic hypogonadism (Hh) in 2 patients. The hypogonadotropic hypogonadism was isolated in both cases. The testicular echography confirmed testicular atrophy and showed cryptorchidism

关键词： Diagnostic Hypogonadism Male Senegal

Usability of a Natural Tuff as Admixture in Clinker and Its Influence on the Physico-Chemical and Mechanical Properties of Mortar

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Journal of Minerals and Materials Characterization and Engineering 2021年第5期9卷 480-498页

作者： lamine Zerbo Moustapha Sawadogo Youssouf Sawadogo Salfo Salogo Moussa Ouedrago mohamed Seynou Gisèle Lecomte-Nana Philippe Blanchart Laboratoire de Chimie Moléculaire et des Matériaux (LC2M) University Joseph Ki-Zerbo Ouagadougou Burkina Faso Centre Européen de la Céramique Limoges France

The mechanical and physical properties of TUFF from Korsimoro (Burkina Faso) were investigated for use as admixtures in clinker to make pozzolanic cement. Six different cement mortar specimens were prepared by replacing clinker with TUFF in ratios of 0%, 5%, 8%, 10%, 13% and 15% by mass. The flexural and compressive strengths of the specimens were determined at the ages of 2, 7, 28 and 60 days. The effects of the TUFF replacement ratio on workability, setting time and volume expansion were also examined. Based on the results, it was concluded that Korsimoro TUFF has pozzolanic activity and is suitable for use as an alternative adherent material in the cement industry.

关键词： Pozzolan Tuff Admixture Cement Mortar

Complications of Circumcision: A Three-Year Experience in N’Djamena Mother &Child Hospital (Chad)

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Open Journal of Urology 2016年第4期6卷 55-62页

作者： Mahamat Ali Mahamat Olivier Ngueringem mohamed Jalloh Mahamat Nour Vadandi Valantin Oradimo Sylvain lamine Niang Serigne M. Gueye The University of N’Djamena N’Djamena Chad The General Hospital of National Reference of N’Djamena N’Djamena Chad The N’Djamena Mother and Child Hospital N’Djamena Chad Grand Yoff General Hospital (HOGGY) of Dakar Dakar Senegal

Aim: This study aimed at describing the various aspects of complications of circumcision and their management in patients referred to N’Djamena Mother & Child Hospital (Chad). Material and Methods: All patients referred for complications of circumcision reported on a 3-year period (July 2011-May 2014) were included. Demographic data, circumstances of the circumcision, clinical presentation and management were computed. Results: Thirty-one cases of complications from traditionally performed circumcisions (n = 19) or circumcisions were performed by paramedics (n = 12). The average age was 7.5 ± 2 years. More than 60% of the patients were between 6 and 10 years old. The complications reported included: urethral fistula in the balano preputial sulcus in 10 cases (32%), entire amputation of the glans in 2 cases (6.5%), amputation of the penis in one case (3.5%), stenosis of the urethral meatus in 8 cases (26%), bleeding in 5 cases (16%) and infections in 5 cases (16%). A surgical treatment was performed according to clinical cases. Conclusion: Circumcision is safe when performed in hospitals. Unfortunately, serious complications may occur if it is performed by non-experts. Hence there is a necessity to raise people’s awareness on the importance of the medicalization of circumcision.

关键词： Accident Circumcision Medicalization Chad

Characterization of Peanut Shells for Their Valorization in Earth Brick

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Journal of Minerals and Materials Characterization and Engineering 2020年第4期8卷 301-315页

作者： Ouanmini Bobet Sory Nassio mohamed Seynou Bakiono Remy lamine Zerbo Issiaka Sanou Moustapha Sawadogo Younoussa Millogo Escadeillas Gilles University Joseph KI-ZERBO UFR-SEA Ouagadougou Burkina Faso University Nazi BONI UFR-ST Bobo-Dioulasso Burkina Faso Laboratoire Matériaux et Durabilité des Constructions (LMDC) Université de Toulouse UPS INSA Toulouse France

Peanut shells from Burkina Faso were characterized using mineralogical, microstructural and chemical methods to perform its possibility to be used as reinforce in adobe bricks. It consists of cellulose (48 wt%), hemicellulose (3 wt%) and lignin (28 wt%). The peanut shells were characterized by high porosity and showed water absorption around 198% at 72 hours. Its chemical composition is essentially composed of silica, iron oxides, alumina and calcium oxide. Its microstructure showed that the peanut shells were a compilation of microfibers with high porous of borders. In watery solution, the peanut shells released polyphenols. Thermal conductivity of peanut at 25 °C was 0.155 ± 0.021 W/mK. The physico-chemical characteristics of peanut shells were similar to those found with agricultural by-products used in adobe reinforce.

关键词： Agricultural Wastes Peanut Shells Thermal Conductivity Adobes Durability