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Eosinophilic Gastroenteritis in Tropical Area: about 6 Cases from Senegal

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Open Journal of Gastroenterology 2022年第8期12卷 204-211页

作者： Ibrahima Diallo Mouhamadou Ndiaye Abdoul Sow Awa Ndao fall Omar Touré Cheikh Abdoukhadre fall Bineta Ndiaye fatou fall Sara Boury Gning Departement of Internal Medicine and Hepatogastroenterology H&ocirc pital Principal de Dakar Dakar Sénégal Internal Medicine Department H&ocirc pital Principal de Dakar Sénégal

The aetiologies of hypereosinophilia are dominated by digestive parasitosis and drug intake. In the tropics, because of the frequency of parasitosis, eosinophilic digestive pathologies of primary origin, which are rare, may be overlooked. We report 6 cases of eosinophilic gastroenteritis with polymorphic digestive manifestations testifying to the different locations of eosinophilic infiltration in the digestive parietal layer. Three patients had ascites rich in eosinophils, indicative of serous involvement, while the other two had a muscular form, and the last a mucosal involvement. The evolution was favourable in all cases with corticosteroid therapy, but a recurrence was noted in 4 cases when treatment was stopped.

关键词： Eosinophilic Gastroenteritis Ascites Digestive Eosinophilic Infiltration Senegal

Isolated esophageal tuberculosis:A case report

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World Journal of Gastrointestinal Endoscopy 2022年第9期14卷 575-580页

作者： Ibrahima Diallo Omar Touré Elhadji Souleymane Sarr Abdoul Sow Bineta Ndiaye Papa Silman Diawara Cherif Mouhamed Dial Ababacar Mbengue fatou fall Hepato-Gastroenterology Hopital Principal de DakarDakar 3006Senegal Hepatogastroenterology Hopital Principal de DakarDakar 3006Senegal Department of Pathology Hopital Principal de DakarDakar 3006Senegal Department of Biology Hopital Principal de DakarDakar 3006Senegal Department of Pathology Hopital Général Idrissa PouyeDakar 3006Senegal Department of Imaging Hopital Principal de DakarDakar 3006Senegal

BACKGROUND Tuberculosis is endemic in *** its extra-pulmonary localization is rare,esophageal tuberculosis,particularly the isolated form,is *** report here a case of isolated esophageal tuberculosis in an immunocompetent *** SUMMARY A 58-year-old man underwent consultation for mechanical dysphagia that had developed over 3 mo with non-quantified weight loss,anorexia,and *** digestive endoscopy showed extensive ulcerated lesions,suggesting *** diagnosis was confirmed by histopathology,which showed gigantocellular epithelioid granuloma surrounding a caseous *** computed tomography scan did not show another localization of the *** outcome was favorable with *** Esophageal tuberculosis should be considered when dysphagia is associated with atypical ulcerated lesions of the esophageal mucosa,in an endemic area.

关键词： Tuberculosis Esophagus Endoscopy Case report

Eosinophilic Gastroenteritis in Tropical Area:about 6 Cases from Senegal

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Resilient Modulus of Compacted Lateritic Soils from Senegal at OPM Conditions

Open Journal of Gastroenterology 2022年第8期

作者： ibrahima diallo mouhamadou ndiaye abdoul sow awa ndao fall omartouré cheikh abdoukhadre fall bineta ndiaye fatou fall sara boury gning

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Geomaterials 2013年第4期3卷 165-171页

作者： fatou Samb Meissa fall Yves Berthaud Makhaly Ba Laboratoire d’ Alembert—Université Pierre et Marie Curie Paris France Laboratoire de Mécanique et Modélisation—UFR Sciences de l’ Ingénieur Université de Thiès Thiès Sénégal

Repeated load triaxial tests were performed on five compacted gravel lateritic soils collected from different locations in Senegal: Sébikotane, Dougar, Pa Lo, Mont-Rolland and Ngoundiane. The study revealed that resilient modulus decreases with the increase of the bulk and deviatoric stress in constant confining pressure. In addition, resilient modulus increases with the percentage of cement for appreciably equal contents of moisture. This effect tends to stop for higher stress. Besides, correlations were made with some models of resilient modulus such as the Uzan-Witczack model (Witczack and Uzan, 1988 [1]) and the National Highway Research Program (NCHRP) model (2004 [2]). The study confirms that both models give very good results with the best correlations being obtained with the Uzan-Witczack model.

关键词： Gravel Lateritic Soils Resilient Modulus Mechanical Behaviour Pavement Cyclic Triaxial Test Mechanistic Design

Evaluation of the Impact of Truck Overloading on Flexible Compacted Gravel Lateritic Soil’s Pavements by FEM with Cast3M©

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Geomaterials 2015年第1期5卷 19-24页

作者： fatou Samb Meissa fall Yves Berthaud Farid Bendboudjema Laboratoire de Mécanique et Modélisation UFR Sciences de l’Ingénieur Université de Thiès Thiès Sénégal Sorbonne Universités UPMC Univ Paris 06 UMR 7190 d’Alembert F-75005 Paris France Laboratoire de Mécanique et de Technologie Ecole Normale Supérieure de Cachan Cachan France

Within the framework of a FEM of the nonlinear behavior of lateritic pavement of Senegal, the effect of truck overloading is studied to estimate its impact on the deformability of road pavement on compacted gravel lateritic soils. For that purpose, various loading conditions were tested to measure the impact on the critical response parameters of road pavement design. The implementation of the models was realized with Cast3M©. This study allowed us to point out that the observed variations are linear and would help to plan in advance the impact of axle overloads for a better evaluation within the framework of the mechanistic (M. E.) design of pavements.

关键词： FEM Axle Overload Nonlinear Behavior Gravel Lateritic Soil

Effect of Compaction Moisture Content on the Resilient Modulus of Unbound Aggregates from Senegal (West Africa)

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Geomaterials 2012年第1期2卷 19-23页

作者： Makhaly Ba Meissa fall Oustasse Abdoulaye Sall fatou Samb 不详

This paper presents the results of research conducted to investigate the effect of compaction moisture content on Resil- ient Modulus (Mr) of unbound aggregates. Three different aggregates (GRB, Basalt and Bandia limestone) was collect- ed from different sites within Senegal and then subjected to repeated load triaxial tests. Test results showed that the ef- fect of compaction water content is more significant in the dry side than in the wet side. The compaction water content has less effect on the GRB and the Basalt than on the Bandia limestone. GRB and Basalt are cohesionless materials and allow water to drain even during the compaction procedure. Change in water content increases as the compaction water content increases because of the drainage of the excess water during the compaction and loading procedures. For GRB and Basalt, at Wopt + 1.5%, most of the excess water is drained during the compaction of the sample and continue to be drained during the Resilient Modulus test. For the Bandia limestone, this drainage is less significant due to cohesion, absorption and hydratation.

关键词： Resilient Modulus Summary Resilient Modulus Quartzite Basalt Bandia Limestone

Resilient Modulus of Unbound Aggregate Base Courses from Senegal (West Africa)

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Open Journal of Civil Engineering 2011年第1期1卷 1-6页

作者： Makhaly Ba Meissa fall fatou Samb Déthié Sarr Mapathé Ndiaye 不详

This paper presents the results of research conducted to investigate the Resilient Modulus (Mr) of unbound aggregates used as pavement layer in Senegal (West Africa) as well as the effect of water content and density on the Resilient Modulus of the materials tested. Four different aggregates was collected from different sites within Senegal and then subjected to repeated load triaxial tests. Test results showed that the Bandia limestone is around 44% stiffer than the basalt, and 71% to 104% stiffer that the Black and the Red quartzites (GNB and GRB). The basalt is 21% to 43% stiffer than the GNB and the GRB. Basalt specimens compacted at Wopt– 2% were 30% stiffer than basalt specimens compacted at Wopt and 40% stiffer than those com- pacted at Wopt+ 2%. The Summary Resilient Modulus (SRM) at Wopt– 2% is 22% higher than SRM at Wopt and 35% higher than SRM at Wopt+ 2% for the GRB and the GNB. The SRM at Wopt– 2% is 30% higher than SRM at Wopt and 40% higher than SRM at Wopt+ 2%, for the Basalt. For the Bandia limestone, the SRM at Wopt– 2% is 81% higher than SRM at Wopt and 126% higher than SRM at Wopt+ 2%. Results show also that the Resilient Modulus increases around 25% when relative density increases from 77% to 119% and the variation is more significant at high stress states than at low stress state. Results of statistical analysis and coefficients of determination (R2) showed that the Uzan and NCHRP models are more suitable to predict the Resilient Modulus of the aggregates tested.

关键词： Resilient Modulus Summary Resilient Modulus Quartzite Basalt Bandia Limestone Un-bound Aggregates

Air Pollution Related to Traffic and Chronic Respiratory Diseases (Asthma and COPD) in Africa

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Health 2017年第10期9卷 1378-1389页

作者： fatou K. Sylla Adama Faye Mamadou fall Anta TAL-DIA Institute of Health and Development-Public Health and Preventive Medecine Cheikh Anta Diop University (UCAD) Dakar Senegal Laboratory of Toxicology and Hydrology Cheikh Anta Diop University (UCAD) Dakar Senegal

Introduction: Chronic respiratory diseases (CRD) are obvious effects of air pollution and the third reason of death in developing countries. In Africa, air pollution from road traffic is one of the main causes of poor air quality. We set out to systematically review existing published researches on traffic related to air pollution and CRD, particularly asthma and Chronic Obstructive Pulmonary Disease (COPD) in Africa. Methods: A literature search of PubMed, Scholar and LISSA databases, published journals, reference articles, published up to 31 December 2016, has been done by using a research strategy procedure. Texts were reviewed for inclusion. Studies were included if they met the following criteria: 1) the relationship between asthma or COPD with ambient air pollution related to road traffic was studied and 2) the population included people from Africa or lived in Africa. Articles written in English and French were included. Results: Fifty-five articles were selected in this review, of which twenty-seven were on air pollution and CRD in Africa. The proximity of the residence or workplace to the traffic is associated with an increased risk of asthma with a dose-response relationship. The estimated prevalence of COPD varies between 2.7% and 38.5%. Conclusion: There is little research on traffic related to air pollution and CRD in Africa. Strategies to reduce traffic related to air pollution in African cities have been proposed in order to have a healthier ambient air.

关键词： Air Pollution Traffic Africa Asthma COPD

Cam-Clay Models Using Castem 2000©and Plaxis©for the Study of the Slope Stability of the “Corniche Ouest” of the Dakar Peninsula (Senegal, West Africa)

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Geomaterials 2011年第2期1卷 51-58页

作者： Meissa fall Serigne Sam Samb Mapathé Ndiaye Oustasse A. Sall fatou Samb 不详

The stability of the natural slopes of the “Corniche Ouest” of Dakar Capital was intensively researched by previous [1] in [2] and recent studies [3]. Soils near the surface consist of weathered lateritic cuirass, silt and marl that have been intensively altered and fractured. Below these altered layers are limestones that are interbedded with other thin volcanic layers. Prior to the 1950s the area had been less urbanized. In the 1950s demand for habitations and administrative offices led to the development of the area but, no drainage system was available. In 1984 the area began moving down slope toward the ocean. Rates of movement were the fastest several months after the end of the rainy season and the slowest during the dry season. In the next years the earthflow moved as much as some meters, but in the processes the expensive homes and administrative buildings built became uninhabitable. Movement was caused by a combination of wave erosion along the coast removing some the mass resisting flow, added water due to the disposal of wastes, watering of lawns, and rainfall causing the clays to expand and weaken, and by the added weight of development on top of the flow. The first investigations, due to a lack of geotechnical information describe a stable area even though it was observed cracks and failure in habitations. The main results obtained were specially obtained by analytical techniques of slices. It is well known that the mechanical response of a solid mass of soil depends primarily on the laws of behavior which were affected to him. The Cam-Clay model is used with two comparative numerical codes such as Castem 2000?, a non commercial code and Plaxis 7.2? so as to compare the mechanical response of the slopes. The models of Cambridge are founded as simple theory and use only some soil mechanical parameters easy to determine. The results are founded highly different from a code to another, but they attest all that the system described is non stable. Otherwise

关键词： Corniche Ouest Stability Numerical Codes Cam Clay Movements Natural Slopes