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Computed Tomography Findings and Clinico-Epidemiological Aspects of COVID-19 Pneumonia at CHME Luxembourg in Bamako (Mali)

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Open Journal of Medical Imaging 2022年第1期12卷 1-8页

作者： Alassane Kouma Souleymane Sanogo Issa Cissé Ousmane Traoré Ilias guindo Ouncoumba Diarra Mamadou Dembélé Seydou ly Mahamane Mariko Mamoudou Camara Siaka Sidibé Medical Imaging Department of CHME Luxembourg Bamako Mali Marie Curie Clinic Bamako Mali Department of Medical Imaging of the CHU of Kati Bamako Mali Department of Medical Imaging of CSREF CIII Bamako Mali Medical clinic Fertilia Bamako Mali Medical Imaging Department of the CHU Point g Bamako Mali

Objective: To describe the CT findings and clinico-epidemiological aspects of coronavirus pulmonary lesions at the Radiology Department of Mother-Child Luxembourg’s Hospital in Bamako, West Africa. Materials and Method: This was a cross-sectional descriptive study over a period of three months (November 2020-January 2021). The study involved all patients with a clinical suspicion of COVID-19 or confirmed cases with suggestive CT scan lesions during this period. No patients without suggestive CT lesions were not included. The variables were age, sex, clinical data, lungs lesions on CT scan and their severity. Results: Out of 202 patients enlisted, the age group 52 - 63 years was more frequent (30.2%), i.e. an average age of 60.43 years (range 23 and 95 years). Men represented 56.4% or a sex ratio of 1.3. Cough was the most common clinical manifestations (26.7%). Major findings were mixed appearance of the lung lesions (45.5%). The peripheral distribution was 57.4% and the bilateral topography was 98%. These lesions were extensive in the majority of our patients with 28.2%. Conclusion: Older people dominated the socio-demographic profile of our series with a predominance of men. Cough was the most observed clinical information. Mixed lesions with peripheral and bilateral distribution dominated the semiological tomodensitometric aspects. By severity, extensive lung lesions were the most commonly observed.

关键词： COVID-19 CT Scan Mixed Lesion Cough

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Existence and Nonexistence of Nontrivial Weak Solution for a Class of general Capillarity Systems

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Acta Mathematicae Applicatae Sinica 2014年第4期30卷 1121-1130页

作者： g.A.AFROUZI N.T.CHUNg Z.NAgHIZADEH Department of Mathematics Faculty of Mathematical SciencesUniversity of Mazandaran Department of Mathematics Quang Binh University312 Ly Thuong Kiet

The aim of this paper is to study the nonexistence and existence of nonnegative, nontrivial weak solution for a class of general capillarity systems. The proofs rely essentially on the minimum principle combined with ... 详细信息

关键词： weak solutions nonexistence multiplicity capillarity systems variational methods

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不同栽培居群菘蓝叶中5种有机酸成分的含量差异

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第二军医大学学报 1999年第6期20卷 374-376页

作者：王寅尹茶乔传卓刘盛第二军医大学药学院生药学教研室第二军医大学药学院药物分析教研室

目的：考察不同栽培居群菘蓝叶５种有机酸成分的含量差异。方法：采用高效毛细管电泳法同时测定１２个不同栽培居群菘蓝叶中抗内毒素活性成分邻氨基苯甲酸、水杨酸、丁香酸、苯甲酸、３－（２－羧苯基）－４（３Ｈ）－喹唑酮的含量。结... 详细信息

目的：考察不同栽培居群菘蓝叶５种有机酸成分的含量差异。方法：采用高效毛细管电泳法同时测定１２个不同栽培居群菘蓝叶中抗内毒素活性成分邻氨基苯甲酸、水杨酸、丁香酸、苯甲酸、３－（２－羧苯基）－４（３Ｈ）－喹唑酮的含量。结果：不同栽培居群菘蓝叶的５种有机酸含量差别十分显著，不同居群菘蓝叶的邻氨基苯甲酸含量为２０．３５～３７９．９４μｇ／ｍｌ；水杨酸为１４．９８～４０．３７μｇ／ｍｌ；丁香酸为２．２９～１２．２３μｇ／ｍｌ；苯甲酸为７．８５～６９．５０μｇ／ｍｌ；３－（２－羧苯基）－４（３Ｈ）－喹唑酮为１０．０５～３７．７４μｇ／ｍｌ。结论：菘蓝在居群间存在明显的化学成分含量差异，这可能是导致药材品质不同的原因之一。

关键词：菘蓝活性成分毛细管电泳法有机酸

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Prevalence of Renal Failure in Children and the Need for Dialysis in Paediatric Nephrology in a Developing Country

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Open Journal of Nephrology 2022年第1期12卷 101-111页

作者： Younoussa Keita Aliou A. Ndongo Fatou ly Ndeye C. Cisse Liliane N. D. M. Yamba Babacar Niang Djiby Seck Amadou Sow Ndeye F. Sow Abou Ba Indou D. ly Aliou Thiongane Amadou L. Fall Idrissa D. Ba Modou gueye Pape M. Faye Assane Sylla Pediatric Unit of Aristide Le Dantec Hospital Dakar Senegal Pediatric Unit of Pikine Hospital Dakar Senegal Pediatric Unit of Albert Royer Hospital Dakar Senegal Pediatric Unit of Abass Ndao Hospital Dakar Senegal Pediatric Unit of Dalal Diam Hospital Dakar Senegal

Background: Renal failure is among the major visceral failures responsible for morbidity and mortality in children. Epidemiological data on renal failure in children are limited in sub-Saharan Africa, including Senegal. We conducted this study to assess the prevalence of renal failure (RF) and the need for dialysis in the paediatric nephrology unit. Patients and methods: This was a retrospective and descriptive study in the pediatric nephrology unit from 1st January 2020 to 30 June 2021, including children with acute or chronic RF. The need for dialysis was judged to be met by its effectiveness in face of an indication. The data collected were analysed on sphinx plus 2017 software. Results: The prevalence of RF was 60% (n/N = 132/220). RF was acute in 59% (n/N = 78/132) of cases. The mean age was 6.53 ± 4.77 years with a sex ratio of 1.8. The mean serum creatinine level was 27.22 mg/L (240.9 μmol/L) and BUN at 0.85 g/L. The aetiologies were dominated by prerenal AKI (Acute Kidney Injury) complicating nephrotic syndrome (NS) in 37.2% (n/N = 29/78) and dehydration due to stomach flu in 17.6% (n/N = 9/51). Acute post-infectious glomerulonephritis including group A streptococcus and plasmodium falciparum accounted for 16.7% (n = 13/78) of intrinsic AKI. The need for dialysis was unmet in 50% (n/N = 7/14) with a mortality of 14.1% (n/N = 11/78). The mean age of the patients with chronic RF was 8.68 ± 4.74 years with a sex ratio of 2.6. The mean serum creatinine level was 36.56 mg/L (323.5 μmol/L) and the BUN level was 0.99 g/L. Half of the children were classified as having CKD stage II (early stage). The aetiologies were dominated by primary focal and segmental glomerulosclerosis (FSgS), 53.7% (n/N = 29/54), renal hypoplasia, 22.2% (n/N = 12/54) and reflux nephropathy, 29.4% (n/N = 5/17). The need for dialysis was unmet in 46.1% (n/N = 6/13). The overall mortality of chronic kidney disease (CKD) with RF was 29.6% (n/N = 8/27). Conclusion: The prevalence of RF was high i

关键词： Renal Failure glomerulonephritis Hypodysplasia Dialysis Children

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胞内氧化还原水平对嗜热厌氧乙醇菌发酵代谢的影响

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中国生物工程杂志 2012年第7期32卷 73-78页

作者：孙焕民过敏伊日布斯昆明理工大学生命科学与技术学院昆明650500

辅酶NADH/NAD+在细胞内氧化还原反应中起着重要的作用,是细胞生长和能量代谢必不可少的辅因子。调节微生物胞内NADH/NAD+的比率是定向改变微生物代谢,高效获得目标代谢产物的有效手段。嗜热厌氧乙醇菌(Thermoanaerobacter ethanolicus)... 详细信息

辅酶NADH/NAD+在细胞内氧化还原反应中起着重要的作用,是细胞生长和能量代谢必不可少的辅因子。调节微生物胞内NADH/NAD+的比率是定向改变微生物代谢,高效获得目标代谢产物的有效手段。嗜热厌氧乙醇菌(Thermoanaerobacter ethanolicus)是高温厌氧菌中乙醇产量较高的代表性菌株,本文利用不同氧化还原态的碳源改变***的胞内NADH/NAD+含量和比例,进而研究了其对细胞生长、代谢产物分布的影响。以不同比例的葡萄糖/甘露醇作为混合碳源发酵,胞内氧化还原水平、细胞的生长特性、代谢产物都发生了不同程度的差异,以葡萄糖作为唯一碳源进行培养时,***生长良好,乙醇产量为0.79g/L,但胞内NADH/NAD+比值和乙醇/乙酸的比值都比较低,分别为0.47和4.82;随着葡萄糖在混合碳源中比例的下降,NADH/NAD+比值增高,发酵产物中乙醇/乙酸比值也呈现上升的趋势。而以甘露醇作为唯一碳源时,发酵产物中乙醇浓度为0.389g/L,NADH/NAD+比值和乙醇/乙酸的比值分别为1.04和16.0。

关键词： NADH/NAD+ 高温厌氧乙醇菌乙醇发酵

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耐多药结核分枝杆菌基因位点表达研究

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实用医学杂志 2016年第24期32卷 4118-4121页

作者：戚应杰查晓丹安徽省立医院感染病院检验科合肥市230022

目的:了解临床分离的耐多药结核分枝杆菌菌株耐药基因的突变情况。方法:采用基因芯片法对耐多药结核分枝杆菌临床分离菌株的耐药基因进行检测,研究其耐药基因突变情况。结果:80株耐多药结核分枝杆菌临床分离株中未见单一耐药情况,全部... 详细信息

目的:了解临床分离的耐多药结核分枝杆菌菌株耐药基因的突变情况。方法:采用基因芯片法对耐多药结核分枝杆菌临床分离菌株的耐药基因进行检测,研究其耐药基因突变情况。结果:80株耐多药结核分枝杆菌临床分离株中未见单一耐药情况,全部耐异烟肼(isoniazid,INH)+利福平(rifampicin,RFP),其中耐异烟肼+利福平+链霉素(streptomycin,SM)+乙胺丁醇(ethambutol,EMB)的耐药率明显高于其他耐药情况,差异有统计学意义(Pg、H526Y、D516V、H526D位密码子,其中第S531L和D516g位密码子突变率分别为72.5%和75.0%,明显高于其他密码子,差异有统计学意义(Pg基因突变位点主要为第315M位密码子,突变率为75%。inhA基因突变位点主要为第-15M位密码子,突变率为87.5%。rpsL基因突变位点主要为第43M、88M位密码子,突变率分别为85.2%、14.8%。embB基因突变位点主要为第306M2位密码子,突变率为65%。结论:PCR及基因位点突变测定可快速检测耐多药结核分枝杆菌的耐药基因,结核分枝杆菌耐多药性与多个耐药基因突变相关。

关键词：耐多药结核分枝杆菌耐药基因突变

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Study of the Thermal, Rheological, Morphological and Mechanical Properties of Biocomposites Based on Rod-Of Typha/HDPE Made up of Typha Stem and HDPE

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Advances in Materials Physics and Chemistry 2018年第9期8卷 340-357页

作者： Babacar Niang El Hadj Babacar ly Abdou Karim Diallo Nicola Schiavone Haroutioun Askanian Vincent Verney Ansou Malang Badji Mahmoud Kalid Diakite Diéne Ndiaye Section Physique Appliquée Unité de Formation et de Recherche de Sciences Appliquées et de Technologies Université Gaston Berger Saint Louis Sénégal Institut de Chimie de Clermont-Ferrand Université Blaise Pascal Clermont-Ferrand France CNRS UMR 6296 ICCF Université Blaise Pascal Aubière France

The thermal, rheological and morphological properties of composite biomaterials made with mixture of high density polyethylene and typha rod powder (RD) were evaluated. The dynamic mechanical behavior of the samples was studied with 25%, 35% and 45% typha stem powder concentrations. The viscoelastic properties are mainly related to the nature of the polymer and the typha stem powder. Storage (g') and loss (g') moduli increased significantly, depending on the amount of powder in the molten mixture. After a viscosity increase was noticed in low frequency, it decreased in high frequencies, which demonstrates the pseudo-plasticity effect. Morphological and thermal characterization results have shown the dispersion state of the powder and its ability to modify the kinetics crystallization of biocomposites.

关键词： Biocomposite Thermal Rheological Morphological Mechanical Properties

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锂钒氧化物的液相法合成及电化学性能

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过程工程学报 2006年第4期6卷 670-673页

作者：刘丽英田彦文翟玉春徐茶清东北大学材料与冶金学院辽宁沈阳110004

采用液相法合成锂离子电池正极材料锂钒氧化物.通过XRD,Tg-DTA分析确定了合成反应的主要历程.采用XRD及SEM、恒电流充放电、循环伏安测试研究了产物Li1+xV3O8的物理和电化学特征.结果表明,该法合成的产物为单一相层状结构,颗粒均匀,首... 详细信息

采用液相法合成锂离子电池正极材料锂钒氧化物.通过XRD,Tg-DTA分析确定了合成反应的主要历程.采用XRD及SEM、恒电流充放电、循环伏安测试研究了产物Li1+xV3O8的物理和电化学特征.结果表明,该法合成的产物为单一相层状结构,颗粒均匀,首次放电容量达288.9mA-h/g,15次后仍保持在264.0mA-h/g,容量保持率为91.38%,充放电效率在95%以上.Li+在Li1+xV3O8中的嵌入过程是分步进行的.

关键词：锂离子电池正极材料锂钒氧化物液相反应合成机理电化学性能

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Influence of Lactobacillus E1 on the Storage Stability in Emulsion Immobilization

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Journal of Wuhan University of Technology(Materials Science) 2009年第1期24卷 75-80页

作者：孙欣陈西广 College of Life Science Ocean University of China

A coacervation method with double emulsion strategy （w/o/w） was used to prepare immobilized Lactobacillus E1. Diatomite was chosen as the carrier for bacteria. Sodium alginate, dextrin and gelatin were used as protective solutes for the preservation of Lactobacillus E1 and their effects on the storage viability during storage were discussed. The influence of storage temperature on the storage viability was also examined. The results show that high bacteria viable count over 109 cfu/g for an extended shelf life of 37 d can be achieved with 2% sodium alginate, 5% dextrin and 4% gelatin as protective solutes, at 10 ℃ of the storage temperature. This immobilized Lactobacillus E1 has potential use as functional food ingredient for both human dairy food and animal feedstuff.

关键词： lactobacillus microencapsulation storage viability protective solute shelf life

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锂离子电池正极材料锂钒氧的固相合成

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东北大学学报（自然科学版） 2006年第4期27卷 434-437页

作者：刘丽英田彦文徐茶清翟玉春东北大学材料与冶金学院辽宁沈阳110004

以Li2CO3和V2O5为原料,进行了固相法制备锂离子电池正极材料Li1+xV3O8的实验研究.通过Tg-DTA,XRD及交流阻抗等测试方法考察了合成条件对Li1+xV3O8样品结构、电导率及电化学性能的影响.XRD结果表明:随着焙烧温度的提高,产物的(100)衍射... 详细信息

以Li2CO3和V2O5为原料,进行了固相法制备锂离子电池正极材料Li1+xV3O8的实验研究.通过Tg-DTA,XRD及交流阻抗等测试方法考察了合成条件对Li1+xV3O8样品结构、电导率及电化学性能的影响.XRD结果表明:随着焙烧温度的提高,产物的(100)衍射峰相对强度增强,这使Li+在LiV3O8中嵌入脱出的路径较长.交流阻抗测试表明:随着烧结温度的提高,电导率增大,而随着烧结时间的延长,电导率出现先增大而后又减小的趋势.电化学测试结果表明,580℃焙烧20 h合成的产物具有优良的电化学性能,放电比容量最高达到254.0 mAh.g-1,10次循环后仍保持在245.6 mAh.g-1,优于高温熔融法制备的材料,是较为理想的锂离子电池候选正极材料.

关键词：锂离子电池正极材料 Li1+x V3O8 合成条件电化学性能

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