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Simulation of the Construction of a Swivel Bridge Using BIM 4D

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Open Journal of Civil Engineering 2023年第1期13卷 139-154页

作者： moussa traore Guanhua Zhao Xiaoyong Zhou Faculty of Civil Engineering China University of Geosciences Wuhan China CCCC Second Harbor Engineering Company Ltd. Wuhan China

The AEC (Architecture, Engineering, and Construction) industry is gradually shifting away from 2D CAD drawings and toward Building Information Modeling as a result of the fast development of science and technology (BIM). The BIM idea’s introduction emphasizes the need to specify a building in a single building model with adequate information to suit its different needs rather than defining it in fragmented documents. This research work aims to use the BIM 4D for the simulation of the construction sequence of a Swivel Bridge. For that, the software Revit was used to make the 3D model of the bridge, and the software Navisworks was used for the 4D construction simulation of the project. The results demonstrated that BIM technology could help reduce delays and problems with the schedule and improve communication among stakeholders, and BIM visualization and simulation features were very useful compared to traditional planning methods.

关键词： BIM 4D Swivel Bridge 4D Simulation 3D Model

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高速微孔钻床主轴系统的动态特性分析

机械设计与研究 2005年第6期21卷 93-97页

作者： traore moussa MAGARA 裴永臣李晶谭庆昌吉林大学南岭校区机械科学与工程学院吉林长春130025

依据转子动力学理论,利用Timoshenko梁轴理论,建立了包含旋转惯性力、陀螺力矩、离心力、弯曲变形、扭转变形、钻削轴向力和钻头的三种边界条件在内的高速微孔钻床主轴系统动力学模型.在利用实验和现有文献对所建立的模型进行了检验的... 详细信息

依据转子动力学理论,利用Timoshenko梁轴理论,建立了包含旋转惯性力、陀螺力矩、离心力、弯曲变形、扭转变形、钻削轴向力和钻头的三种边界条件在内的高速微孔钻床主轴系统动力学模型.在利用实验和现有文献对所建立的模型进行了检验的基础上,对高速微孔钻床主轴系统的临界转速、临界轴向压力进行了分析.结果表明高速微孔钻床主轴系统的临界转速随钻削轴向压力的增大而减小,并且钻削过程中比刚入钻时能承受更高的转速,更大的轴向力;临界轴向压力随高速微孔钻床主轴系统转速的升高而降低,即随着钻削转速的提高,应适当减小钻削轴向力.

关键词：转子动力学微小孔钻床临界转速临界压力

Physico-Chemical Analysis of Soils Used for Pineapple Cultivation in the Sub-Prefectures of Maferinyah and Friguiagbé (Prefectures of Forécariah and Kindia) Republic of Guinea

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Journal of Agricultural Chemistry and Environment 2024年第3期13卷 251-262页

作者： Sâa Gerard Tolno Saran Camara Amadou Sylla Adama moussa Sakho Lounceny traore Department of Laboratory Techniques Higher Institute of Technology Mamou Republic of Guinea Environmental Studies and Research Centre Conakry Republic of Guinea Department of Chemical Engineering Gamal Abdel Nasser University of Conakry Conakry Republic of Guinea

Over the years, pineapple production in the Republic of Guinea has become less competitive in the West African sub-region, with a world ranking of 144th. It is therefore only natural to review certain parameters in order to improve this ranking. To do this, certain physico-chemical parameters of soil samples from Friguiagbé and Maferinyah (in the Kindia and Forécariah prefectures) were taken and analysed using the following techniques: Pipette de Robinson, Anne, Bray II, Kapen HICDVITZ, Mc. Lead (1982). The analytical results show that the soils at Friguiagbé in Kindia and Maferinyah in Forécariah are acidic, with pH values of 4.4 and 4.7 (fields I and II) and 4.8 and 4.7 (fields I and II) respectively. The soils have a silty-sandy texture. This study could therefore serve as a guide for the Ministry of Agriculture of the Republic of Guinea.

关键词： Soil Pineapple Crop Physico-Chemical Analysis

Feasibility of Scanopelvimetry in the Medical Imaging Department of the University Hospital of Point “G”.

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Open Journal of Medical Imaging 2022年第3期12卷 157-164页

作者： Abdoulaye Koné moussa Konaté Youssouf Koné moussa traore Youssouf Diawara Ibrahima Coulibaly Ouncoumba Diarra Fatoumata Kalapo Amadou Doumbia Kassim Sidibe Cheick Oumar Touré Oumar Aba Ata Mody A. Camara Mamadou Sima Coulibaly Salia Mahamadou Diallo Adama Diaman Keita Siaka Sidibé Faculty of Medicine and Odontostomatology Bamako Mali Medical Imaging Department of the University Hospital of Point G Bamako Mali Radiology Department of the Jacques Boutard Hospital Saint-Yrieix-la-Perche France Medical Imaging Department of GABRIEL TOURE Hospital Bamako Mali Radiology Department of CSREF Commune III Bamako Mali Medical Imaging Service Health Center of Ref Commune VI Bamako Mali DCSSA Kati Mali Medical Imaging Service Health Center of Ref Commune IV Bamako Mali Medical Imaging Service of the Mali Hospital Bamako Mali. Surgery of Gynecology-Obstetrics CHU Point G Bamako Mali Medical Imaging Department CHU BSS Kati Mali

Purpose: The purpose of our study was to describe the technique of scanopelvimetry used in the radiology department of the Point G University Hospital, to specify the indications of scanopelvimetry in the department and to evaluate the cost of radiopelvimetry. Patients and Method: This was a prospective, cross-sectional study that took place over a 12-month period from January 1 to December 31, 2018. It focused on pregnant women in whom scanopelvimetry was performed in the medical imaging department of Point G University Hospital during the study period. Results: Out of 8615 CT examinations performed in the radiology department, we collected 65 cases of scanopelvimetry, i.e., 0.7% of the CT examinations. Primigravida and paucigravida dominated the study (40% each). In 60% of the pregnant women the height was less than 150 cm. The most frequent indication for CT scanning was clinical pelvic narrowing (50%). In 80% of the cases, the scanopelvimetry was performed after 37 weeks of amenorrhea. A predominance of narrowing of the superior strait was noted (40%). 4.6% of the pregnant women had a Magnin index of less than 20. CT scanopelvimetry is a feasible examination in our context but the level of demand is low because of the high cost of the examination (49500 fca). Conclusion: In light of the results obtained, we can say that CT pelvimetry allows us to predict the probable route of delivery and thus we can reduce the risk of fetomaternal morbidity and mortality to improve maternal and child health.

关键词： Scanopelvimetry Prognosis Magnin Index Delivery

Left Pyelic Bifidity and Ectopic Ureteral Superolateral Intravesical Homolateral Ectopic Junction Revealed by a Urinary Calculus Apropos of a Case at the Pasteur Clinic

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Open Journal of Medical Imaging 2022年第3期12卷 123-130页

作者： Abdoulaye Kone Oucoumba Diarra Mamoudou Camara Youssouf Kone Abba Ata Omar moussa traore Ibrahima Coulibaly moussa Konate Kassim Sidibe Toumin Camara Youssouf Diawara Cheick Oumar Toure Abdoulaye Mody Camara Salia Coulibaly Mahamadou Diallo Adama Diaman Keita Aboubacar S. Ndiaye Siaka Sidibe Faculty of Medicine and Odontostomatology Bamako Mali Medical Imaging Department of the University Hospital of Point G Bamako Mali Radiology Department of CSREF Commune III Bamako Mali Medical Imaging Service Mother Child Hospital Luxembourg Bamako Mali FSTS Gamal Abdel NasserConakry Guinea Radiology Department of the Jacques Boutard Hospital Saint-Yrieix-la-Perche France France Medical Imaging Department of the Pasteur Polyclinic Bamko Mali DCSSA Bamako Mali General Medicine Department of the Siguiri Prefectural Hospital Siguiri Guinea Medical Imaging Service Health Center of Ref Commune IV Bamako Mali Medical Imaging Department of Mali Hospital Bamako Mali Medical Imaging Department of KATI Hospital Bamako Mali Medical Imaging Department of GABRIEL TOURE Hospital Bamako Mali

Introduction: Malformations of the excretory tract are abnormalities due to a disorder of embryogenesis. According to some authors, their frequency varies from 0.30 to 5.25 per 1000. The aim of this study was to highlight the CT uroscan aspect of pyelic bifidity with intravesical ureteral ectopic junction revealed by a urinary calculus and to explain the interest of CT uroscan in the management of urinary pathologies. Result: We report the observation of a 37-year-old overweight patient with a body mass index equal to 28, a history of surgery and extracorporeal litho-thipsis dating back 10 years. He was referred to the Imaging Department in the context of renal colic. The uroscanner made it possible to highlight a left pyelic bifidity associated with an ectopic abutment of the left ureter on the superolateral wall of the bladder, a calculation in the left ectopic ureteral meatus measured at 4 mm in axial diameter. He noted upstream of these lesions, a uretero-pyelo-calicielle dilation on double homolateral pyelon. On late cuts, a slight delay in left renal excretion was noted. The right kidney was also the site of a hyperdense calculation of 1257 HU density and measured 4 mm in transverse diameter with a non-obstructive appearance. Due to a lack of means, our patient was subjected to oral medication, hygiene and dietary rules and rigorous monitoring. Conclusion: At the end of this study, the uroscanner is presented as the reference examination to better explore urinary pathologies. At the same time, it makes it possible to carry out a study of the organs surrounding the urinary tract. Always think about the association of several urinary pathologies each time you see a patient for renal colic.

关键词： Bifidity Pyelic Uroscanner Ectopia Lithiasis

Ultrasound Biometry of the Liver at the Point “G” University Hospital Center in Bamako

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Open Journal of Medical Imaging 2024年第3期14卷 86-95页

作者： Ousmane traore Siaka Diakite Drissa Mansa Sidibe moussa Konate Mamadou N’Diaye Salia Coulibaly Nouhoum Ongoiba Adama Diaman Keita Department of Radiology and Medical Imaging University Hospital Center of Point G Bamako Mali Department of Family Medicine/Community Medicine Faculty of Medicine and Odontostomatology (FMOS) Bamako Mali Department of Radiology Bamako-Mali Military Health Center Bamako Mali Department of Radiology and Medical Imaging University Hospital Center Kati Mali Department of Anatomy Faculty of Medicine and Odonto-Stomatology Bamako Mali

Introduction: Biometrics therefore corresponds to the measurement of the morphological elements of humans. One of the most common ultrasound requests by clinicians is the assessment of liver size. The aim of our study was to study liver biometry using ultrasound in healthy adult subjects. Material and Methods: This was a prospective, descriptive and analytical study, carried out at CHU Point-G over a period of 7 months. A liver ultrasound was performed on 100 individuals without lesions, by a doctor in his final year of specialization in radiology and medical imaging. For each subject, we determined the height and anteroposterior diameter of the right liver and the left liver. Results: The mean age was 39.05 ± 16.86 years. The body mass index (BMI) 18.5 - 24.9 group was the most represented with 58%. The mean height of the right liver was 138.40 ± 14.85 mm. It was 136.81 ± 14.70 mm in men and 139.92 ± 14.99 mm in women (P = 0.306). That of the left liver was 95.55 ± 14.34 mm, in men, it was 91.79 ± 13.51 mm and 99.16 ± 14.31 mm in women (P = 0.019). We found a significant correlation between right liver height and BMI (P = 0.013). Conclusion: The mean values of liver biometry were established in our series. There was a significant correlation between right liver height and BMI. Liver ultrasound remains a reliable technique for liver biometry.

关键词： Liver Biometry Ultrasound Point-G University Hospital Bamako

Epidemiological, Clinical and Radiological Study of Patients Operated on for Spondylolisthesis in the Neurosurgery Department of CH “the Luxembourg” in Bamako

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Open Journal of Medical Imaging 2022年第3期12卷 109-122页

作者： Abdoulaye Kone moussa traore Mamoudou Camara Youssouf Kone moussavou-Imounga Jacqueline Ouncoumba Diarra Mamadou Diarra Youssouf Diawara Oumar Abba Ata Ibrahima Coulibaly moussa Konate Kassim Sidibe Toumin Camara Cheick Oumar Touré Abdoulaye Mody Camara Salia Coulibaly Mahamadou Diallo Adama Diaman Keita Siaka Sidibé Faculty of Medicine and Odontostomatology Bamako Mali Medical Imaging Department of the University Hospital of Point G Bamako Mali Medical Imaging Department of the Pasteur Polyclinic Bamako Mali Medical Imaging Department of GABRIEL TOURE Hospital Bamako Mali Medical Imaging Service Mother Child Hospital Luxembourg Bamako Mali Faculty of Health Sciences and Techniques Gamal Abdel Nasser University of Conakry Conakry Guinee Radiology Department of the Jacques Boutard Hospital Saint-Yrieix-la-Perche France Neurosurgery Department of the Mère-enfant le Luxembourg Hospital Bamako Mali Radiology Department of CSREF Commune III Bamako Mali DCSSA Bamako Mali Internal Medicine Department of the Prefectural Hospital of Siguiri Siguiri Guinea Medical Imaging Service Health Center of Ref Commune IV Bamako Mali Medical Imaging Department of Mali Hospital Bamako Mali Medical Imaging Department of KATI Hospital Kati Mali

Introduction: Spondylolisthesis is defined as a permanent anterior sliding of the vertebral body accompanied by the pedicles, the transverse processes and the posterior joints in relation to the underlying vertebra. The prevalence of spondylolisthesis varies between 4% and 9%, according to different authors in France, China and Japan. In Africa, some African authors find a spondylolisthesis rate of 9.93%. The objective of this study was to study the clinical and radiological aspects of spondylolisthesis at the Mother-Child Hospital of Bamako. Methods: Prospective and retrospective descriptive study carried out in the neurosurgery department of CH Mother-Child Luxembourg in Bamako from 2010 to 2018. Result: We collected 42 patients operated on for spondylolisthesis out of 145 patients, i.e., 29% of the department’s activities. The average age of our patients was 51 years old, with extremes of 20 and 75 years old. The sex ratio was 0.81 in favor of women. 61.9% of our patients performed work requiring physical strength. Neurogenic claudication was the predominant clinical sign with 88.1% of cases. CT was the most common way of exploration in 57.1% of cases and CT myelo in 47.6% of cases. Disc herniation was associated with spondylolisthesis in 23% of cases. Spondylolisthesis was grade 1 in 59.6% of cases and was responsible for mixed stenosis in 73.82% of cases. All our patients underwent laminectomy. The evolution at 6 months postoperative was favorable in 64.3% of cases. Conclusion: The diagnosis of spondylolisthesis is radiological and makes it possible to define the type of lesion according to its etiology and its severity, but also to highlight the conflicts with the nervous system which will have to be cured. Field and household work, pregnancy, carrying loads or children on the back could be incriminated.

关键词： Spondylolisthesis Radiology Operated

Obstetrical Acute Kidney Injury: Epidemiology and Clinical Aspects in Teaching Hospital of Ignace Deen, Conakry Guinea

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Case Reports in Clinical Medicine 2020年第1期9卷 35-39页

作者： Ibrahima Koussy Bah Fousseny Diakite Mamadou Saliou Baldé Abdouramane Diallo Mamadou Yacine Bah Amadou Yaya Diallo Alpha Boubacar Bah moussa traore Telly Sy Diallo Alpha Oumar BaH Unit of Gyneco-Obstetric of the National Hospital Ignace Deen Conakry Guinea Unit of Nephrology-Hemodialysis of the National Hospital Donka Conakry Guinea

Introduction: In Guinea, data on the acute kidney injury (AKI) of women in the obstetrical context is still limited. This study attempted to determine the prevalence and the clinical signs of obstetric AKI in Guinea. Patients and methods: The study population consisted of pregnant or postpartum women with AKI, whom we treated in this institute from August 2018 to January 2019. All had normal anterior renal function with serum creatinine clearance ≥ 120 μmol/L, and then suffered AKI. Patients characteristics were examined;maternal age, gestational weeks, AKI characteristics. Results: Of 2438 pregnant women admitted during the study period, 56 showed AKI. Antepartum and postpartum AKI accounted for approximately 80% and 17%, respectively. Regarding the maternal age, Conclusion: We here demonstrated peripartum AKI in Guinea, which findings may provide fundamental data to establish some strategy against this condition in this region.

关键词： Obstetric AKI Epidemiological and Clinical Aspects Ignace Deen Conakry

Epidemiological, Clinical and Therapeutic Aspects of Bladder Tumors in a Schistosomiasis-Endemic Country

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Open Journal of Urology 2024年第3期14卷 151-159页

作者： Amadou Kassogue Idrissa Sissoko Alkadri Diarra moussa Salifou Diallo Daouda Sangare Boureima Coulibaly Philippe Togo Albacaye Sember Mahamadou traore Salia Coulibaly Mamadou Lamine Diakite Urology Department Pr Bocar Sidy Sall University Hospital Kati Mali Urology Department Luxembourg University Hospital Bamako Mali Medical Imaging Department Pr Bocar Sidy Sall University Hospital Kati Mali Urology Department Point G University Hospital Bamako Mali

Introduction: Bladder tumors are common in our country;Mali is a bilharzial endemic country. In our context, urinary bilharzia is common, and bladder tumors arouse particular interest in the field of urological oncology, because of their frequency, their diagnosis, their difficulty in management and their histological particularity. The objective of our work was to study the epidemiological, clinical and therapeutic aspects of bladder tumors. Materials and Methods: This is a cross-sectional, descriptive study with a retrospective and prospective collection that took place over 3 years from January 1, 2020 to December 31, 2022. Results: We identified 316 cases of bladder tumors during this period. Bladder tumors are a common pathology representing 35.95% of all hospitalized patients, and occupying the 1st rank of tumors in urology in the Urology Department of the Pr Bocar Sidy Sall University Hospital in Kati. Bladder tumors were more common in men with 56.33%. The average age of our patients was 50 years ± 25.8 years and the extreme ages were 20 and 87 years. Urinary schistosomiasis, considered a predisposing factor, was found in 66.78% of cases in our patients as a history. Transurethral resection of the bladder was performed in 100% of our patients, nephrostomy in 1.90% of cases, ureterostomy in 1.58% of cases, Bricker type urinary diversion in 1.27% of cases, and a neobladder in 0.32% of cases. Squamous cell carcinoma is the dominant histological type (88.29%). The postoperative outcome was 99% favorable after resection. Conclusion: Bladder tumors were mainly tumors infiltrating the bladder muscle. The main risk factor was urinary bilharzia. Squamous cell carcinoma is the most common histological type with a diagnostic delay, thus limiting radical treatment after resection of the bladder tumor.

关键词： TURB Squamous Cell Carcinoma Urinary Schistosomiasis