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Modern Mechanical Engineering 2022年第4期12卷 83-97页

作者： Ibrahima Kama Mamadou lamine Sow Cheikh Mbow Department of Physics University Cheikh Anta Diop (UCAD) Dakar Senegal

A Fourrier Petrov Galerkin spectral method is described for high accuracy computation of linearized dynamics for flow in a circular pipe. The code used here is based on solenoidal velocity variables. It is written in FORTRAN. Systematic studies are presented on the dependence of eigenvalues and other quantities on the axial and azimuthal wave number;the reynolds’ number Re and a new none-dimensional number Ne. The flow will be considered stable if all the real parts of the eigenvalues are negative and unstable if only one of them is positive.

关键词： Newtonian Fluids Magnetic Field Linear Stability Petrov-Galerkin Generalized Eigenvalue Problem

Dynamic Detection of Reinforced Concrete Bridge Damage by Finite Element Model Updating

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Journal of Mechanics Engineering and Automation 2014年第1期4卷 40-45页

作者： Mohammed lamine Moussaoui Mohamed Chabaat Abderrahmane Kibboua Faculty of Mechanical and Chemical Engineering University of Sciences and Technology Houari Boumedien Faculty of Civil Engineering University of Sciences and Technology Houari Boumediene National Earthquake Engineering Research Center (CGS)

The present work consists of dynamic detection of damages in reinforced concrete bridges by using a MMUM （mathematical model updating method） from incomplete test data. A well suited finite element model of a repaired bridge is carried out. The diagnosis enables us to locate and detect the damage in a reinforced concrete bridge. Thus, developments of analytical predictions have been checked by modal testing techniques. Besides, the FTCS （finite time centered space） scheme is developed to solve the set of equations which can easily handle finite element matrices of a bridge model. It is shown in this study that the method is applied to detect damages as well as existing cracks in real time of a repaired bridge. To check the efficiency of the method, the repaired bridge of OuedOumazer in Algeria has been selected. It is proven that identification methods have been able to detect the exact location of damage areas to be corrected avoiding the inaccuracy from the finite element model for the mass, stiffness and loading.

关键词： Bridges damage detection MMUM finite elements FTCS correlation.

复合酶制剂对肉鸡生长性能、抗氧化、免疫及肉品质的影响

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复合酶制剂对肉鸡生长性能、抗氧化、免疫及肉品质的影响

作者： lamine Kouta Keita 南京农业大学

学位级别：硕士

本文研究了复合酶制剂对AA肉仔鸡生长、屠宰、免疫和抗氧化性能以及肉品质的影响。48只体重相近的健康AA肉仔鸡随机分为对照组和试验组。对照组饲喂基础日粮,试验组饲喂基础日粮添加复合酶制剂。第一部分：主要研究复合酶制剂对AA肉仔... 详细信息

本文研究了复合酶制剂对AA肉仔鸡生长、屠宰、免疫和抗氧化性能以及肉品质的影响。48只体重相近的健康AA肉仔鸡随机分为对照组和试验组。对照组饲喂基础日粮,试验组饲喂基础日粮添加复合酶制剂。第一部分：主要研究复合酶制剂对AA肉仔鸡生长和屠宰性能的影响。结果表明,试验组肉仔鸡的采食量、增重和饲料效率高于对照组,但差异不显著(P>0.05)。与对照组相比,试验组的胸肌率和瘦肉率有极显著提高(P0.05)。第二部分：主要研究复合酶制剂对AA肉仔鸡免疫功能和抗氧化性能的影响。结果表明,复合酶制剂对21日龄肉仔鸡胸腺指数、脾脏指数和法氏囊指数无显著影响(P>0.05)。与对照组相比,试验组21日龄肉仔鸡血清中TNF-α含量极显著减少(P0.05)。同时与对照组相比,试验组42日龄肉仔鸡血清中MDA含量降低了23.55%(P>0.05),而SOD活性、CAT活牲、GSH-Px活性和T-AOC分别提高了16.60%(P>0.05)、7.29%(P>0.05)、13.43%(P>0.05)和20.06%(P0.05)和12.61%(P>0.05),而SOD活性、GSH-Px活性和T-AOC分别比对照组提高了21.18%(P>0.05)、81.18%(P>0.05)和31.90%(P>0.05)。第三部分：主要研究复合酶制剂对AA肉仔鸡肉质的影响。结果表明,复合酶制剂的添加对肉仔鸡胸肉营养成分无显著影响(P>0.05)。与对照组相比,试验组的L*、a*、b*均无显著变化(P>0.05);pH45和pH24均有提高的趋势,但差异也不显著(P>0.05);滴水损失和蒸煮损失分别降低了16.95%和15.14%,但差异也不显著(P>0.05);剪切力显著降低了24.45%(P0.05)。复合酶制剂对鸡胸肉的硬度、内聚性、弹性、胶粘性和咀嚼性均无显著性影响(P>0.05)。与对照组相比,试验组的总蛋白溶解度、肌浆蛋白溶解度和肌原纤维蛋白溶解度均有所提高,但差异不显著(P>0.05);磷脂酶A2含量也有所降低,但差异不显著(P>0.05)。

关键词：肉鸡复合酶生产性能氧化性能肉质

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用全蛋粉作为挤压婴幼儿食品营养增补剂研究

用全蛋粉作为挤压婴幼儿食品营养增补剂研究

作者： Mohamed lamine Bangoura 江南大学

学位级别：硕士

给婴幼儿提供充分的营养对维持他们的健康是极为重要的,不能够从食品中吸收足够的营养对他们的发育是有害的。在婴幼儿期营养缺乏正影响世界上很大一部分人群,因此FAO制定了在食品中添加营养物的发展计划来挑战在婴幼儿中的营养不良现... 详细信息

给婴幼儿提供充分的营养对维持他们的健康是极为重要的,不能够从食品中吸收足够的营养对他们的发育是有害的。在婴幼儿期营养缺乏正影响世界上很大一部分人群,因此FAO制定了在食品中添加营养物的发展计划来挑战在婴幼儿中的营养不良现象。谷物(如大米)、豆类(如大豆)、果蔬(胡萝卜)等的营养特性可以通改良或者处理(如挤压技术)使之能够更有利于人们食用。挤压蒸煮技术现在已经被广泛的应用于动植物食品原料制作速食食品。婴幼儿食谱利用本地最廉价的食品资源来制定。用来做为食品营养添加的食品原料主要有大米、大豆、胡萝卜、全蛋粉以及麦芽糊精来做为三种婴幼儿食品配方(WF,WF和WF)的原料。这三种婴幼儿食品配方的混合为水分10%原料分别在100,110和120℃进行挤压,挤压主要预先焙烤混合全蛋粉和麦芽糊精的原料赋予其热粘弹性、化学营养特性、提高氨基酸和氮溶解指数。用市场上销售的婴幼儿食品以及GB 10770-1997的营养标准和本研究中的三种婴幼儿食品进行对比。三种配方在混合料中营养成份如下:蛋白质:17.16,18.38,和18.05%;水份:8.06,8.09和8.04%;脂肪:18.13,18.69,和18.54%;碳水化合物:55.57,54.08,and 54.60%;能质:457.59,458.05,和457.66 kcal/100g;矿物质主要有Fe,Zn,Ca,Mg and P。三种婴幼儿WF,WF和WF混合料最大的BU值分别为281,301和225 BU。氨基酸氮溶指数与三种婴幼儿食品的蛋白质溶解指数存在一定的联系,最大的溶解指数的pH范围为6-8,WF的氮溶解指数最大73.37%,WF为71.37%,WF的氮溶指数值最低为70.51%。WF的水吸收能力最大为393mL/g,WF为365mL/g,WF的水吸收能力最低为294mL/g。体积密度随着全蛋粉的添加量的增加而减小,三种婴幼儿食品的体积密度分别为0.42g/mL,0.34g/mL和0.26g/mL。用DSC分析挤压配方的WF和CWF热变性,同时蛋白质变性、碳水化合物成分,感官分析和微生物也被分析。

关键词：挤压营养品质婴幼儿食品添加剂

Child’s Cardiopathies at the Hospital De La Paix in Ziguinchor (Senegal)

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Open Journal of Epidemiology 2022年第1期12卷 50-56页

作者： Simon Joël Manga Sena Laurenda Houngbeme Mohamed Leye lamine Thiam Sidy lamine Sy Quinta Indafa Te Cardiology Department Hospital De La Paix Assane Seck University of Ziguinchor Ziguinchor Sénégal Paediatric Department Hospital De La Paix Assane Seck University of Ziguinchor Ziguinchor Sénégal Cardiology Department Regional Hospital of Mbour Thiès University Thies Sénégal Cardiologie Department Fann National University Center Dakar Sénégal

Introduction: Childhood heart disease consists of congenital and acquired heart disease. The aim of this study was to describe the epidemiological profile and the clinical and aetiological characteristics of childhood heart disease at the H?pital de la Paix in Ziguinchor. Method: This was a retrospective study from 1 January 2016 to 1 June 2020 in the cardiology and paediatrics departments of the H?pital de la Paix in Ziguinchor. We included in the study all patients aged 0 - 18 years, hospitalised with heart disease confirmed by cardiac ultrasound. Results: In total, we included 57 patients in the study. The hospital prevalence was 1.6%. The average age was 67.85 ± 65 months. The predominance was male with a sex ratio of 0.96. The majority of mothers (50%) were between 15 and 30 years old. In our study, 8.85% of patients had a history of previous angina. Trisomy 21 was present in 12.35% of our patients. Severe acute malnutrition was found in 21.05% of cases. Lower limb oedema (82.4%) and dyspnoea (59.6%) were the most frequent clinical signs. On cardiac ultrasound, 52.6% of patients had congenital heart disease and 47.4% of patients had acquired heart disease. Ventricular septal defect (33.33%) was the most common congenital heart disease. Among the acquired heart diseases, mitral insufficiency predominated with 70.8% of cases. Infective endocarditis was the main complication observed. Management was mainly drug-based with diuretics and ACE inhibitors. No patient had undergone surgery. The in-hospital evolution was favourable in 85.9% of cases and the mortality rate was 10.5%. Conclusion: Our study showed that congenital heart disease was more frequent than acquired heart disease and that management, particularly surgery, was lacking.

关键词： Heart Disease Child Ziguinchor De La Paix Hospital

Causes and Prognosis of Cases of Acute Obstructive Renal Failure Managed at the Donka National Hemodialysis Center

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城市形态比较分析：南京和阿尔及尔城市形态及未来前景

Open Journal of Nephrology（肾脏病） 2024年第2期 136页

作者： Amadou Yaya Diallo Mamadou Mouctar Diallo Mamadou Dian Barry Kadiatou Mamadou Bobo Barry Saikou Oumar Diallo Djenabou Diallo Soriba Bangoura Mamadou Malal Diallo Thierno Mamadou Oury Diallo Mohamed lamine Kaba Alpha Oumar Bah

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城市形态比较分析：南京和阿尔及尔城市形态及未来前景

作者： CHEDDAH Mohamed lamine 东南大学

学位级别：硕士

城市的快速扩张是当今城市发展面临主要挑战之一。这种增长如果不受控制和引导,极有可能对社会、经济、环境等产生极大地负面影响。城市扩张是一种普遍现象,在非洲和亚洲大陆尤其明显。然而,这种扩张过于急速,会对就业、住房、能源、基... 详细信息

城市的快速扩张是当今城市发展面临主要挑战之一。这种增长如果不受控制和引导,极有可能对社会、经济、环境等产生极大地负面影响。城市扩张是一种普遍现象,在非洲和亚洲大陆尤其明显。然而,这种扩张过于急速,会对就业、住房、能源、基础设施等方面带来一些挑战,比如城市贫困人口增加、贫民窟扩大、城市环境恶化等问题。本文对阿尔及尔市与南京市的城市形态进行了比较分析,重点比较了两座城市的城市形态演变过程,分析了它们的空间结构与城市面临的主要城市问题间的关系。除此之外,本文还探索了两个城市空间结构的相似性和差异性,以便对它们的增长类型和程度进行更加准确的分析。本文运用的技术方法主要为定性和定量相结合的方法,还结合多种形态学方法,如历史地理、空间句法、类型形态学、Cellular automata(CA)等,多角度的分析阿尔及尔和南京正在面临的城市问题。研究结果表明,阿尔及尔市和南京市所经历的不同事件是导致各自空间结构不断演变的主要原因。阿尔及尔的城市形态和空间结构在历史上保持相对稳定,干预措施较少;而南京的城市形态和空间结构则处于不断变化之中。阿尔及尔一九八零年扩张开始起步。而南京市的快速扩张起步较晚,开始于二十一世纪初。推动两城市快速扩张的主要因素不同,对于南京来说,经济和人口的增长是两个主要因素;对于阿尔及尔来说,人口城市化、交通设施的发展、政策和战略规划主要因素。通过对阿尔及尔市城市空间结构的分析可知,城市有机交通网络的可达性相对于南京较低,这种脆弱的空间结构体现在阿尔及尔市严重的交通拥堵中。尽管南京的空间结构优于阿尔及尔,但其城市的可行走性和渗透性,仍然是城市规划中所面临的一个重大挑战。目前的空间结构和创建大型街区的想法,将鼓励人们购买更多的汽车,从而消耗更多的能源。最后,对2030年城市扩张的预测表明,阿尔及尔的空间结构将更加分散,城市扩张将主要发生在城市周边的郊区。而南京的城市扩张将一直持续,并占用更多的土地。

关键词：城市扩张城市形态空间分析阿尔及尔市南京市

Oil Spill Response Information System and Contingency Planning for Guinean Waters

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Oil Spill Response Information System and Contingency Planni...

Pulmonary Hypoplasia: A Rare Cause of Chronic Cough in TB Endemic Area

2011 2nd International Conference on Challenges in Environmental Science and Computer Engineering(CESCE 2011)

作者： Sylla lamine Deqi Xiong Environmental Science and Engineering College Dalian Maritime University

Over the years there has been many well documented cases of major oil pollution from leaked offshore oil rigs, ships in distress and from coastal oil facilities. In response to concerns about the possibility of a major oil spillage occurring along the coast of Guinea, the Guinean government drew up a plan and organisation. The purpose of this research was to develop Guinean Marine Oil Spill Response Information System. To do this, we simulated an oil spill concentration transport. The results show that the numerical model in oil spill accident simulation is important in allowing setting up of possible response and contingency planning. From the results we conclude that, the search strategies for futures responses and contingency planning to possible oil spill case in Guinean coasts has been clarified. Implications of research findings allow international community to consider reasonable estimation of spilled oil trajectory with limited environmental input data.

关键词： Guinean waters Oil spill Contingency planning Response system Models

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Open Journal of Respiratory Diseases 2019年第1期9卷 18-25页

作者： Ouattara Khadidia Kanoute Tenin Baya Bocar Soumaré Dianguina Kamian Youssouf Mama sidibé Youssouf Fofana Aminata Traoré Mohamed Maba Guindo Ibrahim sidibe Fatoumata Dakouo Aimé Paul Sanogo Fatoumata Bintou Bamba Salimata Coulibaly lamine Yossi Oumar Kone Drissa Samba Toloba Yacouba Department of Pneumology University Teaching Hospital of Point G Bamako Mali Department of ENT Secondary Hospital “Luxembourg” Bamako Mali Department of ENT Nianakoro Fomba Hospital Ségou Mali Department of Radiology Hospital of Mali Bamako Mali

Pulmonary hypoplasia is a rare disease characterized by a defect of lung development more often unilateral. The diagnosis requires several exams to eliminate other causes of pulmonary retraction. We report two cases at the department of pneumophtisiology of the University Teaching Hospital of Point G. The first case is a young adult who was complaining of a chronic cough. Etiological investigation required several exams including spirometry and Computed tomographic scan (CT scan). After elimination of all suspected causes of pulmonary opacity, the diagnosis of pulmonary hypoplasia was retained. The second case is a 2-year-old girl who was born with congenital cardiopathy whose respiratory complications were increasing during her childhood and respiratory explorations discovered pulmonary agenesis. Pulmonary hypoplasia is rare in our medical practice, but attention must be drawn to a retractile pulmonary opacity in young age after elimination of all infectious causes in TB endemic area.

关键词： A Chronic Cough Pulmonary Hypoplasia Bamako

Development of a Dynamic Modulus Prediction Model for Hot Mixture Asphalt and Study of the Impact of Aggregate Type and Its Electrochemical Properties

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Open Journal of Civil Engineering 2020年第3期10卷 213-225页

作者： Mouhamed lamine Chérif Aidara Makhaly Ba Alan Carter UFR Sciences de l’Ingénieur Université de Thiès Thiès Sénégal Ecole de Technologie Supérieure (ETS) Director of Pavement Bituminous Materials Laboratory (LCMB) Montréal Canada

The most famous model known in prediction of dynamic modulus for asphalt concretes is the Witczak and Hirsh models. These models didn’t use the mineralogical and chemical properties of aggregates. Witczak models used the passing or refusal percentage to sieve diameters and Hirsh model used the volumetric analysis. All models developed until now considered that the aggregates were geotechnical conforming to standards. In this study the first mineralogical and chemical properties were considered through the percentage of silica in the rock source of aggregates and the electric aggregate particles charge zeta. Dynamic modulus values used for regression process are determined from complex modulus test on nine asphalt concretes mix designed with aggregate types (basalt of Diack, quartzite of Bakel and Limestone of Bandia). Between Twelve initial inputs, the statistical regression by exclusion process keeps only seven parameters as input for the model. The mineralogical model showed good accuracy with R2 equal to 0.09. The student test on the model parameters showed that all the parameters included in the model were meaningful with good p inferior to 0.05. The Fisher test on the model showed the same result. The analysis of the sensitivity of the mineralogical model to zeta potential showed that the dynamic modulus increases with the positive zeta-potentials and decrease

关键词： Dynamic Modulus Mineralogical Basalt of Diack Quartzite of Bakel Limestone of Bandia Zeta Potential Silica