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Surgical Site Infections in Trauma and Orthopaedics at Bouaké Teaching Hospital (Côte d’Ivoire)

Open Journal of Orthopedics 2024年第9期14卷 381-390页

作者： Loukou Blaise Yao koffi Léopold Krah Aya Adelaïde Natacha Kouassi Kouamé Innocent M’bra Kouamé jean-Eric Kouassi michel Kodo Department of Trauma and Orthopaedics Bouak Teaching Hospital Bouak Cte dIvoire

Background: Surgical site infections are serious healthcare problems. The aim was to describe the epidemiological, diagnostic, therapeutic, and prognostic aspects of surgical site infections in Trauma and Orthopaedics at Bouaké Teaching Hospital. Method: This retrospective, descriptive, and analytical study was conducted from January 2019 to December 31, 2021. The data studied included prevalence, initial lesions, type of surgical intervention, type of SSI, bacteria involved, treatment, and outcomes. Results: Forty-four (11%) of the 399 patients included in the study developed a surgical site infection. The mean age was 27 years, with 36 male and 8 female. Initial lesions were predominantly open fractures (n = 31;70%), with a mean delay of 48 hours for surgical management. Emergency interventions accounted for 70% (n = 31) of cases. The NNISS infection risk score was 1 in 80% (n = 35) of cases. Superficial infections (n = 34;77%) appeared early, on a mean 6 days postoperatively. Bacteriological analysis primarily identified Pseudomonas aeruginosa (n = 10;23%), sensitive to Imipenem and Chloramphenicol but resistant to Amoxicillin-clavulanic acid, Ceftriaxone, Gentamicin, and Ciprofloxacin. Multidrug-resistant bacteria were found in 89% (n = 8) of cases, with all bacteria resistant to Ceftriaxone. Surgical revision was performed in 10 patients (23%), primarily involving debridement with hardware retention (n = 7;70%). Chloramphenicol was the most commonly used antibiotic post-antibiogram (61%). Outcomes were favourable in 98% of cases. Identified risk factors included the type of lesion according to NRC classification, the delay in managing open fractures, and the NNISS score. Conclusion: The prevalence of surgical site infection was 11%, favoured by the delayed operation of open fractures.

关键词： Surgical Site Infection Open Fractures Pseudomonas aeruginosa Ceftriaxone

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Hepatitis C virus: Virology, diagnosis and management ofantiviral therapy

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World Journal of Gastroenterology 2007年第17期13卷 2461-2466页

作者： Stéphane Chevaliez jean-michel Pawlotsky French National Reference Center for Viral Hepatitis B C and deltaDepartment of Virology & INSERM U841 Henri Mondor Hospital University of Paris XII Créteil France

Hepatitis C virus (HCV) infects approximately 170 million individuals worldwide. Prevention of HCV infection complications is based on antiviral therapy with the combination of pegylated interferon alfa and ribavirin. The use of serological and virological tests has become essential in the management of HCV infection in order to diagnose infection, guide treatment decisions and assess the virological response to antiviral therapy. Anti- HCV antibody testing and HCV RNA testing are used to diagnose acute and chronic hepatitis C. The HCV genotype should be systematically determined before treatment, as it determines the indication, the duration of treatment, the dose of ribavirin and the virological monitoring procedure. HCV RNA monitoring during therapy is used to tailor treatment duration in HCV genotype 1 infection, and molecular assays are used to assess the end-of-treatment and, most importantly the sustained virological response, i.e. the endpoint of therapy.

关键词： Hepatitis C virus serological tests HepatitisC virus genotype HCV RNA quantification Interferon alpha Ri-bavirin-

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International Oil Price Fluctuations and China's Energy Strategy

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World Economy & China 2001年第2期9卷 35-41页

作者： jean-michel Plassard Professor and Vice-president

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基于氢氧基平面激光诱导荧光法的稀释燃烧机理实验研究

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中国电机工程学报 2008年第32期28卷 61-65页

作者：刘玉英 jean-michel Most Philippe Bauer 北京航空航天大学能源与动力工程学院北京市海淀区100083 法国国家科学研究中心燃烧与爆炸实验室

为探讨反应物预热温度和稀释率对稀释燃烧机理的影响,该文以氮气稀释的甲烷–空气对冲扩散火焰为研究对象,采用氢氧基平面激光诱导荧光法(hydroxy radical planar laser induced fluorescence,OH-PLIF)进行实验研究。以OH基反应区厚度... 详细信息

为探讨反应物预热温度和稀释率对稀释燃烧机理的影响,该文以氮气稀释的甲烷–空气对冲扩散火焰为研究对象,采用氢氧基平面激光诱导荧光法(hydroxy radical planar laser induced fluorescence,OH-PLIF)进行实验研究。以OH基反应区厚度表征火焰厚度,实验结果表明,在反应物预热温度较低情况下,当预热温度一定时火焰厚度随反应物稀释率增大(或者浓度减小)而减小,当反应物稀释率一定时火焰厚度随预热温度升高而增大。但进一步分析表明,在反应物预热温度足够高时,火焰厚度将随反应物稀释率增加而增大。根据预热对化学反应速度的增大与稀释对化学反应速度的减小的共同作用,从火焰厚度随反应物预热温度与稀释率的变化情况可推断,在低预热温度稀释燃烧过程中,预热温度是影响火焰结构的主要因素;在预热温度足够高的稀释燃烧过程中,稀释率是火焰结构的主要影响因素,此时由于稀释引起化学反应速度大大降低,因此火焰厚度或体积显著增大。

关键词：对冲火焰稀释燃烧氢氧基平面激光诱导荧光法

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New C-13 Norisoprenoids and Flavonoids from Lannea kerstingii

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Journal of Materials Science and Chemical Engineering 2022年第10期10卷 10-19页

作者： jean-michel Kouamé koffi Philomène Akoua Yao-Kouassi Chardin Seri Seri Abdulmagid Alabdul Magid Zachée Louis Evariste Akissi Laurence Voutquenne-Nazabadioko Université Félix Houphouë t-Boigny Laboratoire de Constitution et Réaction de la Matière UFR Sciences des Structures de la Matière et de Technologie Abidjan C&#244 te d’Ivoire Université de San Pedro San Pedro C&#244 te d’Ivoire Université de Reims Champagne-Ardenne CNRS Reims France

Lannea kerstingii is known for its multiple therapeutic and biological activities. Despite of many traditional uses of this plant, scientific research on the content of its chemical compounds is still limited. This study aims to isolate the chemical compounds contained in the n-butanol fraction of Lannea kerstingii leaves. The chemical investigation of the leaves of Lannea kerstingii led to isolation of three undescribed C-13 norisoprenoids, lankerstinol A-C (1-3), together with six (4-9) known flavonoid glycosides. The structures of these compounds were established by spectroscopic analyses.

关键词： Lannea kerstingii Anacardiaceae Flavonoids C-13 Norisoprenoids Structure Elucidation

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Mechanism of friction reduction of unsaturated fatty acids as additives in diesel fuels

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Friction 2013年第3期1卷 252-258页

作者： jean michel MARTIN Christine MATTA Maria-Isabel De Barros BOUCHET Cyrielle FOREST Thierry Le MOGNE Thomas DUBOIS Michael MAZARIN Laboratory of Tribology and System Dynamics Ecole Centrale de Lyon69134 EcullyFrance TOTAL CReSBP2269360 Solaize CedexFrance

This paper investigates the effect of unsaturated fatty acid additives on the lubricating properties of a biodiesel,composed of a blend of fatty acid methyl esters(FAMEs)and a conventional diesel *** presence of fatty acids as additives for biodiesel improves their lubricating properties at elevated temperature *** formation of a protective lubricating tribochemical film on the steel contact surfaces has been *** temperature conditions and possibly oxygen are needed to form this film that reduces friction and limits *** analytical tools have revealed the insulating nature of the formed tribofilm and its chemical ***-induced reticulation is thought to play a major role in the growth of this insulating film.

关键词： biodiesel low friction fatty acids tribochemistry surface analysis

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Moisture-Induced Non-Equilibrium Phase Segregation in Triple Cation Mixed Halide Perovskite Monitored by In Situ Characterization Techniques and Solid-State NMR

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Energy & Environmental Materials 2023年第2期6卷 185-194页

作者： Mohammad Ali Akhavan Kazemi Nicolas Folastre Parth Raval michel Sliwa jean Marie Vianney Nsanzimana Sema Golonu Arnaud Demortiere jean Rousset Olivier Lafon Laurent Delevoye G.N.Manjunatha Reddy Frédéric Sauvage Laboratoire de Réactivité et Chimie des Solides(LRCS) UMR CNRS 7314-Institut de Chimie de Picardie FR 3085Université de Picardie Jules Verne33 rue Saint LeuAmiens Cedex FR-80039France CNRS Centrale LilleUMR 8181UCCSUnitéde Catalyse et Chimie du SolideUniversité de LilleUniversitéd’ArtoisLille F-59000France UMR 8516-LASIRE-Laboratoire de Spectroscopie pour les Interactions la Réactivité et l’EnvironnementCNRSUniversitéde LilleLille F-59000France EDF R&D EDF LabBoulevard Gaspard MongePalaiseau 91120France

Environmental stability is a major bottleneck of perovskite solar *** a handful of studies are investigating the effect of moisture on the structural degradation of the *** mostly rely on ex situ experiments and on completely degraded samples,which restrict the assessment on initial and final *** combining in situ X-ray diffraction under controlled 85%relative humidity,and live observations of the water-induced degradation using liquid-cell transmission electron microscopy,we reveal two competitive degradation paths leading on one hand to the decomposition of state-of-theart mixed cation/anion(Cs_(0.05)(MA_(0.17)FA_(0.83))_(0.95)Pb(Br_(0.17)I_(0.83))_(3)(CsMAFA)into PbI_(2) through a dissolution/recrystallization mechanism and,on the other hand,to a non-equilibrium phase segregation leading to CsPb_(2)Br_(5) and a Cesium-poor/iodide-rich Cs_(0.05)-x(MA_(0.17)FA_(0.83))_(0.95)Pb(Br_(0.17-2y)I_(0.83)+2y)_(3) *** degradation mechanism is corroborated at atomic-scale resolution through solid-state ^(1)H and ^(133)Cs NMR *** to moisture leads to a film containing important heterogeneities in terms of morphology,photoluminescence intensities,and *** results provide new insights and consensus that complex perovskite compositions,though very performant as champion devices,are comparatively metastable,a trait that limits the chances to achieve long-term stability.

关键词： liquid-cell transmission electron microscopy moisture degradation perovskite stability phase segregation solid-state NMR

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Removing harvest residues from hardwood stands affects tree growth, wood density and stem wood nutrient concentration in European beech (Fagus sylvatica) and oak (Quercus spp.)

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Forest Ecosystems 2022年第2期9卷 147-159页

作者： Sanjoy Roy jean-michel Leban Bernhard Zeller Gregory van der Heijden Arnaud Reichard Marie-Christine Gehin Philippe Santenoise Laurent Saint-Andre INRAE BEFF-54000 NancyFrance IGN Laboratoire de l’Inventaire ForestierNancyF-54000France Universite de Lorraine AgroParisTechINRAESILVAF-54000 NancyFrance

Background:Higher exportation of harvest residues from forests due to increased demand for woody biomass,has reportedly diminished soil mineral resources and may lead to degraded tree nutrition as well as ***,as nutrients become less available in the soil,the remobilization of nutrients in biomass tissues(plant internal cycling)helps sustain tree *** study aims to quantify the impact of Removing Harvest Residues and Litter(RHRL)during five years on tree growth,wood density,and stem wood nutrient concentrations in young beech and oak forest ***:Our study found that,RHRL significantly decreased tree growth ring width by 14%,and wood density by 3%,in beech trees,in near bark *** also significantly reduced nutrient concentration in near bark and near pith areas of both studied ***,Na and S were found lower by 44%,76%,and 56%,respectively,in near bark area of beech *** near bark area of oak trees,K,Ca,Mg,Na,S,and Fe were lower by 20%,25%,41%,48%,41%,and 16%,respectively.K and Mg concentrations decreased more strongly in near pith area compared to near bark area suggesting internal translocation of these two ***:In beech trees,wood density proved to be an important factor while quantifying the effect of removing harvest residuals on tree growth and *** nutrient loss intensified the remobilization of nutrients con-tained in older tree rings(close to the pith)towards newly formed rings(close to bark).In our study,in beech trees,K was found to be the most recycled major *** results demonstrate the potential of such analysis for providing valuable insight into the effect of RHRL in premature stands on the physiological adaptive strategies of trees and an indication of soil fertility status.

关键词： Harvest residues Fagus sylvatica Quercus petraea Dendroecology Dendrochemistry Radial growth Wood density Tree growth Ring width Translocation

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利用重力卫星GRACE监测亚马逊流域2002-2010年的陆地水变化

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地球物理学报 2012年第3期55卷 814-821页

作者：冯伟 jean-michel LEMOINE 钟敏许厚泽中国科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室武汉430077 中国科学院研究生院北京100049 CNES/GRGS ToulouseFrance 31401 华中科技大学地球物理研究所武汉430074

本文利用GRACE(Gravity Recovery and Climate Experiment)卫星重力资料研究了亚马逊流域2002—2010年的陆地水变化,并与水文模式和降雨资料进行了比较分析.在年际尺度上,GRACE结果表明:2002—2003年和2005年,亚马逊流域发生明显的干旱... 详细信息

本文利用GRACE(Gravity Recovery and Climate Experiment)卫星重力资料研究了亚马逊流域2002—2010年的陆地水变化,并与水文模式和降雨资料进行了比较分析.在年际尺度上,GRACE结果表明:2002—2003年和2005年,亚马逊流域发生明显的干旱现象;2007年至2009年,陆地水呈逐年增加的趋势,并在2009年6月变化值达到最大,为772±181km3;自2009年6月至2010年12月,陆地水总量又急剧减少了1139±262km3,这相当于全球海平面上升3.2±0.7mm所需的水量.水文模式得到的亚马逊流域陆地水在2010年也表现出明显的减少.降雨资料与GRACE观测资料有很好的一致性.在2005年和2010年的干旱期,亚马逊流域的降雨显著减少,说明降雨是亚马逊流域陆地水变化的重要因素.此外,本文采用的尺度因子的方法有效地降低了GRACE后处理误差的影响.

关键词： GRACE 亚马逊流域陆地水

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Variation of Stable Isotopes in Surface Snow along a Traverse from Coast to Plateau's interior in East Antarctica and Its Climatic Significance

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Research in Cold and Arid Regions 2009年第1期1卷 14-24页

作者： jean Jouzel michel Stievenard Institut Pierre Simon Laplace/Laboratoire des Sciences du Climat et de l'Environnement CEA-CNRS-University Versailles-Saint Quentin

The variations of stable water isotopes of surface snow in east Antarctic Ice Sheet, are discussed by a total of 251 samples, which were taken along a 330 km traverse from Zhongshan Station to the outer edge of the Antarctic plateau and from four snow pits excavated along the route. Analyzing results of the samples showed the expected linear relationship between the parameters ?D and ?18O with slope S1 and intercept d1. When the data set was examined using a sliding window with a width of 5 samples, it was found that there were two areas with different ratios of S1 and d1. The boundary between these two areas occurred at an elevation of about 2,000 m, suggesting two different sources of water vapour. Nearly half (47%) of the fresh-snow samples had negative deuterium excess (d=?D? 8?18O) values, but few of the snow pit samples did, suggesting that variations of ? are quickly smoothed by isotopic diffusion in the near-surface firn. Analysis of the phase relationship between ?D and deuterium excess in the snow pit stratigraphies showed that they were mostly in phase from Jan. 1994 to Sept. 1995, but mostly out of phase from Sept. 1995 to Jan. 1997.

关键词： east Antarctica ice sheet stable isotopes snow

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