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Lithostratigraphy and Characterisation of Paleocene Limestones for Optimal Exploitation (Senegal, West Africa): Comparative Study of the Bandia and Popenguine Quarries

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Geomaterials 2023年第3期13卷 51-60页

作者： Mohamadou Moustapha Thiam Adama dione Moumar Dieye Diakher Hélène Madioune Diodio Diouf Ecole Nationale Supérieure des Mines et de la Géologie Cheikh Anta Diop University Dakar Senegal Département de Géologie Cheikh Anta Diop University Dakar Senegal

Limestones of different facies in the Senegal basin are most commonly used as aggregates, regardless of their petrographic properties. These differences may influence their behaviour. The aim of this paper is to study the stratigraphy and characterise the limestones of the Bandia and Popenguine quarries. Sampling and geochemical and geotechnical characterisation were carried out on these limestones. The results show the presence of several very different facies in the Paleocene formation. The geochemical study shows that the Bandia limestones (Bd2) have the highest CaCO3 percentages (98.54%) and the highest SiO2 percentages were recorded in the Popenguine limestones (Pop2). The study also gives MDE values of 22.38 and LA of 22, which are acceptable for use in road construction. It is important to carry out a complete study in order to select the right materials for optimal use.

关键词： Stratigraphy Paleocene Geochemical Limestone Bandia Popenguine

Contribution to the Petrographic and Geochemical Study of the Karthala Massif Lavas in the Bangaani Area, Grande Comore, Indian Ocean

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Open Journal of Geology 2023年第5期13卷 312-336页

作者： Samba Cissokho Adinane Ahamada abdoulaye Ndiaye Diomaye Yatte Papa Malick Ngom Department of Geology Faculty of Sciences and Technics Cheikh Anta Diop University of Dakar (UCAD) Dakar Senegal

The Bangaani area is located in the northwestern part of the Karthala Massif on the island of Grande Comore, about 10 km from the capital Moroni. It is essentially constituted of basalt plateaus outcropping in the form of pahoehoe and aa lava flows or in the form of massive vesicular or non vesicular basalt flows. Petrographic analysis of the massive basalts studied shows a porphyritic microlitic texture marked by the successive crystallization of olivines, opaque minerals, clinopyroxenes and plagioclases in a relatively abundant mesostasis. This crystallization sequence is typical of a high pressure environment corresponding to primary alkaline magmas. The geochemical study of major and trace elements shows that the basalts studied are under saturated in silica (47.24%) but rich in alkali (2.26%) and titanium (2.66%). They correspond to intraplate alkaline basalts of type oceanic island basalts (OIB) and present a primary character marked by relatively high contents of magnesium (6.69%), chromium (151.23 ppm), nickel (107.53 ppm) and scandium (27.15 ppm). The REE and multi-element diagrams confirm that the Karthala basalts are alkaline basalts of type OIB by their enrichment in LILE and their depleted character in HREE and HFSE. In terms of isotopic ratios, they are comparable to HIMU and EM I.

关键词： Bangaani Karthala Comore Alkaline Basalts OIB

Thoracolumbar Spine Fracture-Dislocation without Neurological Deficit: A Case Report and Review of the Literature

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Open Journal of Orthopedics 2021年第5期11卷 153-163页

作者： Roger Mulumba Ilunga abdoulaye diop Mohameth Faye Vital Nacoulma Nicaise Akodjetin Mahougnon Sodjinou Momar Codé Ba Department of Neurosurgery Regional Hospital Center of Thiès Thiès Senegal Department of Neurosurgery Regional Hospital of Ziguinchor Ziguinchor Senegal Department of Neurosurgery National Teaching Hospital of Fann Dakar Senegal

Background: Thoracolumbar spine fracture-dislocations are very unstable and usually secondary to high energy trauma. Due to disruption of the entire vertebrae columns, the absence of neurological deficit is exceptional. Aim: The purpose of this work is to report our experience in the management of this entity in a context of limited resources and to make a review of the literature. Case presentation: A 30-year-old man was admitted with a severe low back pain after a traffic accident. Neurological functions were intact after examination. Radiological assessments revealed a complete L3-L4 fracture-dislocation. The patient underwent an open posterior reduction and internal long segment fixation. The post-operative was marked by a surgical site infection treated with surgical debridement and targeted antibiotic therapy. The neurological functions were preserved. Conclusion: Fracture-dislocations of the thoracolumbar spine are caused by high energy trauma and are remarkably unstable lesions. When they are associated with intact neurorological functions, reduction and stabilization of these fractures are a challenge.

关键词： Spine Fracture-Dislocation Thoracolumbar Spine Spine Surgery Trauma

Rheumatoid Arthritis of Man: A Study of 35 Cases in a Senegalese Hospital

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Open Journal of Internal Medicine 2014年第4期4卷 137-142页

作者： Souhaibou Ndongo abdoulaye Pouye Lionel Ouedraogo Emeric Azankpan Ngoné Diack Thérèse Moreira diop Clinique médicale I-H.A.L.D-Dakar Dakar étoile Senegal

Background: Rheumatoid arthritis is predominant in women. In men certain clinical signs can delay diagnosis. Methods: A cross-section study of the epidemio-clinical and immunobiological features of rheumatoid arthritis in a male, black African population was carried out at the Aristide Le Dantec, University hospital of Dakar. Results: we studied 35 male subjects with rheumatoid arthritis. Their mean age was 42 years and the average time between the onset of symptoms to diagnosis was 44 months. In 70% of these patients, at least one joint deformation was present, most frequently an ulnar deviation of the fingers (34.3%). Extra-articular symptoms were dominated by dry eye syndrome (34%) and anemia (17%). Anemia was significantly less frequent in men than in women. The erythrocyte sedimentation rate was accelerated in 51.4% and C reactive proteins were increased in 92% of patients. The rheumatoid factor was positive in all patients and the anticyclic Citrullinated Peptide (CCP) antibody was positive in 80% of cases. Conclusion: Male rheumatoid arthritis, relatively less studied, was associated with strongly positive immunological markers and a high rate of joint disorders.

关键词： Rheumatoid Arthritis Male Senegal

Ventilatory Disorders in Elite Athletes: Comparative Study between High-Level Athletes and Sedentary Subjects in a Sub-Saharan African Country

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Journal of Biosciences and Medicines 2023年第11期11卷 123-132页

作者： Mame Saloum Coly Mor Diaw Abdou Khadir Sow Mama Ndao Salimata Diagne Houndjo Maimouna Touré abdoulaye Ba abdoulaye Samb Fatou Bintou Sar Arame Mbengue Laboratory of Human Physiology and Functional Explorations UFR of Health Sciences of Iba Der Thiam University Thies Senegal Laboratory of Human Physiology and Functional Explorations Faculty of Medicine Pharmacy and Odontology (FMPO) of Cheikh Anta Diop University Dakar Senegal Department of Pulmonology Abdoul Aziz Sy Dabakh Hospital Tivaouane Senegal

Background/Objective: Very intense and repeated exercise, particularly when performed over many years, could cause respiratory health problems. The combination of a sustained high ventilation and provocative training environments may impact the susceptibility of athletes to ventilatory disorders. Previous studies suggest that impaired ventilatory function in elite athletes can be detected in the absence of respiratory symptoms even after cessation of sports activity. The purpose of this study was to evaluate the ventilatory function of elite athletes compared to sedentary subjects. Material and Methods: This study included sedentary subjects and elite athletes, all male, aged 16 to 23 years. The athletes played regularly in the Senegalese league 1 championships (football and basketball) for at least two seasons with more than 10 hours of training per week during two years. For all participants, an interrogation was submitted and we conducted a clinic examination was performed following by a basic and post-bronchodilator spirometry. Results: The mean age of athletes (n = 66) and sedentary subjects (n = 61) was respectively 19.16 ± 2 years and 19.54 ± 2.12 years. The elite athletes presented significantly higher spirometry values (p Conclusion: This study found a high prevalence (72.73%) of ventilatory disorders (VD) in Senegalese elite athletes. Many previously undiagnosed elite athletes had significant ventilatory problems. To prevent the respiratory risk, athletes should be encouraged to avoid certain environmental factors and to adapt the period of their training.

关键词： Spirometry Sport Sedentary Asthma Senegal

A Giant Calcified Subdural Empyema, a Complication of Ventriculo Peritoneal Shunt: Surgical Management and Revue of Literature

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Open Journal of Modern Neurosurgery 2020年第2期10卷 203-207页

作者： Faye Mohameth diop abdoulaye Kissao Nissao Roger Ilunga Mulumba Djasde Donald Badiane Seydou Boubacar Neurosurgery Departement of El Hadj Ahmadou Sakhir Ndieguene’s Regional Hospital Thies Senegal Neurosurgery Departement of CHU FANN Dakar Senegal

Subdural empyema is not a usual complication of ventriculo peritoneal shunt and the discovery of his calcified form is much exceptional in young adults. We report the case of a female patient of 17 years old carrying a shunt since 16 years who was received for retro auricular suppuration facing the intra ventricular drain and whom cerebral CT-Scan shows a right hemispheric calcified empyema. A large craniotomy was realized in the same time than an external ventricular drain. Evolution was marked by minor right body motor troubles and seizures. Difficulties we have faced during the management are a reminder about morbidity due to the insertion of a ventriculo peritoneal shunt and the need of and long term follow up for the carriers.

关键词： Giant Calcified Empyema Ventriculo Peritoneal Shunt

Late Discovery of a Vein of Galen Aneurysmal Malformation Complicated with Hydrocephalus: A Case Report

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Open Journal of Modern Neurosurgery 2020年第2期10卷 254-259页

作者： diop abdoulaye Faye Mohameth Cissé Mohamed El Hassimi Thioub Mbaye Ba Momar Code Badiane Seydou Boubakar Neurosurgery Department of CHNU Fann Dakar Senegal

The aneurysmal malformation of the vein of Galen is a rare condition, corresponding to less than 1% of intracranial vascular malformations. It is a disease affecting mainly newborns and small children. We are reporting the case of an 11-year-old teenager who presented consciousness disorders associated to generalized convulsive seizures. The cerebral CT scan supplemented by an angioscanner, revealed an important expansive process in the pineal region, confirming the diagnosis of an aneurysmal malformation of the Galen’s ampulla with upstream obstructive hydrocephalus. The child benefited from a ventriculo-peritoneal shunt with favorable immediate operative sequels. His death occurred at home two months after surgery over the course of a convulsive seizure with post critical coma.

关键词： Intracranial Vascular Malformation Arteriovenous Malformation Vein of Galen

Prevalence and Association of Criteria of Metabolic Syndrome in a Cohort of Diabetes Type 2 in Saint-Louis

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Open Journal of Internal Medicine 2019年第3期9卷 45-51页

作者： Dia Diatou Gueye Dia Amadou diop Diagne Nafissatou M. Ngouamba Blaise Ndao Awa Cheikh Pouye abdoulaye UFR of Health Sciences Gaston Berger University Saint Louis USA Regional Hospital Center of Saint-Louis Saint Louis USA Cheikh Anta diop University Dakar Senegal

Introduction: The metabolic syndrome is characterized by an aggregate of metabolic disorders whose coexistence in the same individual can correspond on the one hand to a common pathophysiological mechanism and on the other hand to expose the subject to an increased risk of cardiovascular diseases. The prevalence of the metabolic syndrome is increasing rapidly in both developed and developing countries, but has been poorly described in sub-Saharan Africa. Most of them reported the components of the metabolic syndrome only in isolation. Methods: This cross-sectional study carried out on a cohort of 76 patients followed at the Sait-louis regional hospital used the definition criteria of the International Diabetes Federation. Results: The average age of our patients is 56.92 with extremes ranging from 32 to 80 years old. The sex ratio is 0.49. The average duration of diabetes progression is 68 months. The prevalence of the metabolic syndrome in this population is 67.1%. Abdominal obesity and high blood pressure are the most commonly found criteria. Abdominal obesity was the most associated component of MS in both sexes followed by high blood pressure. We found relatively weak data for dyslipidemia, especially hypertriglyceridemia. HypoHD is dyslipidemia more found in our cohort: in 45% of women and 21% of men. Conclusion: The management of the metabolic syndrome therefore requires fighting against all the factors that compose it, the first of which is the accumulation of visceral fat. Lifestyle modification is the first priority for these patients facing a society where the reduction of physical activity and the enrichment of the fat diet are becoming more and more important.

关键词： Diabetes Dyslipidemia Abdominal Obesity Saint-Louis (Senegal)

Acute Coronary Syndromes: Epidemiological, Clinical and Management Aspects in Thies (Senegal)

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World Journal of Cardiovascular Diseases 2023年第3期13卷 114-123页

作者： Désiré Alain Affangla Jean-Paul Degue Wally Niang Mboup Stéphanie Claudia Akanni Sheikh Mouhamadou B. M. diop Malick Ndiaye Jean-Michel Amath dione Hugues Elie Elame Ngwa Adamson Phiri Djibril Marie Ba Mohamed M. C. B. O. Leye Cardiac Unit Saint Jean de Dieu Hospital Thies Senegal Health Sciences Training and Research Unit University of Thies Thies Senegal

Purpose: To describe the epidemiological, clinical and management characteristics of acute coronary syndromes (ACS) in Thies, Senegal. Methods: This was a prospective study that included consecutively from October 1st, 2018 to March 03rd, 2019, patients aged 18 years or older admitted for an ACS at the DIABCARMET department of the Saint Jean de Dieu Hospital in Thies. Results: Of the 516 patients admitted, 29 had ACS, the prevalence was 5.62%. The average age of the patients was 64.2 ± 11.6 years. Nineteen patients (65.5%) were male and 10 (34.5%) were female, the sex ratio was 1.91. The number of direct admissions was 18 (62%) versus 11 patients (38%) referred. The mode of transport was a private vehicle in 19 patients (65.5%), an ambulance in 7 patients (24.1%) and public transport in 3 patients (10.3%). STEMI (ST segment elevation myocardial infarction) was the most common presentation observed in 19 patients (65.5%). Fifteen patients (51.7%) were admitted before the 12th hour. Of the 19 patients with STEMI, 11 (57.9%) had arrived in hospital before the 12th hour and 10 patients had streptokinase thrombolysis. No patients received primary PCI. Ten patients (34.5%) had heart failure and five patients (17.2%) died during hospitalization. Conclusion: Delayed consultation and high mortality characterize ACS in Thies. Prevention must be the rule.

关键词： ACS Myocardial Infarction Thrombolysis Thies Senegal