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环取代基对金属化聚苯胺衍生物膜修饰电极性能的影响

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高等学校化学学报 2002年第7期23卷 1404-1408页

作者：戴李宗许一婷 jean-yves GAL 吴辉煌厦门大学化学化工学院固体表面物理化学国家重点实验室 UMR Laboratoire Hydrosciences(CNRS UMIIIRD)Maison des Sciences de l'Eau de MontpellierUniversité Montpellier Ⅱ34095 Montpellier Cedex 05France

通过比较聚 2 ,5 -二甲氧基苯胺 (PDMAn)、聚邻甲基苯胺 (POT)和聚间氯苯胺 (Pm Cl An)膜修饰电极的氧化还原电位、沉积在这 3种聚合物上的铂微粒的表面形态与晶面取向以及异丙醇在分散 Pt微粒的聚苯胺膜修饰电极上的氧化行为 ,从电子... 详细信息

通过比较聚 2 ,5 -二甲氧基苯胺 (PDMAn)、聚邻甲基苯胺 (POT)和聚间氯苯胺 (Pm Cl An)膜修饰电极的氧化还原电位、沉积在这 3种聚合物上的铂微粒的表面形态与晶面取向以及异丙醇在分散 Pt微粒的聚苯胺膜修饰电极上的氧化行为 ,从电子效应和立体效应探讨了聚合物电化学性质与环取代基的关系以及不同聚合物基质对 Pt沉积机理和电极催化性能的影响 .结果表明 ,在硫酸溶液中 PDMAn膜修饰电极的氧化还原电位最负、 POT次之、 Pm Cl An最正 .Pt在 PDMAn和 POT膜上的电沉积机理与在 Pm Cl An膜上的不同 ,聚合物膜上沉积的 Pt微粒呈现 (2 0 0 )晶面择优取向 ,其中 POT膜上择优取向度最大 ,PDMAn次之 ,Pm Cl An最小 .异丙醇在金属化聚合物膜电极上的氧化电位取决于聚苯胺的本质 ,在 POT膜修饰电极上异丙醇的电氧化主要发生在 POT的活性电位区 ,而在 PDMAn与 Pm Cl An膜上的电氧化则主要发生在 Pt上的氧化电位区 ,说明聚合物膜不仅作为 Pt微粒的分散介质 ,而且本身可能产生催化作用 .

关键词：金属化聚苯胺衍生物膜环取代聚苯胺金属-聚合物复全材料异丙醇电氧化化学修饰电极电极材料导电聚合物滴除法

Localized magnetization reversal processes in cobalt nanorods with different aspect ratios

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Nano Research 2015年第7期8卷 2231-2241页

作者： Marc Pousthomis Evangelia Anagnostopoulou Ioannis Panagiotopoulos Rym Boubekri Weiqing Fang Frederic Ott Kahina Ait Atmane jean-yves Piquemal Lise-Marie Lacroix Guillaume Viau Universite de Toulouse LPCNO UMR 5215 INSA CNRS UPS 135 av de Rangueil 31077 Toulouse Cedex 4 France Laboratoire Leon Brillouin CEA/CNRS UMR 12 IRAMIS CEA-Saclay 91191 Gifsur Yvette France Department of Materials Science and Engineering University ofloannina Ioannina 45110 Greece Universite Paris Diderot Sorbonne Paris Cite ITODYS CNRS UMR 7086 15 rueJ.-A de Baif 75205 Paris Cedex 13 France

We present results of the synthesis of cobalt nanorods using the polyol process and the mechanism of magnetization reversal. We show that the nucleation step is significantly dependent on the nature of the ruthenium chloride used as the nucleating agent. This allows varying the diameter and aspect ratio of the cobalt nanorods independently. Co nanorods with aspect ratio, mean diameter, and mean length in the ranges ARm =3-16, Din= 7-25 nm, and Lm=30-300 nm, respectively, were produced using this method. X-ray diffraction and electron microscopy showed that a strong discrepancy between the structural coherence and morphological aspect ratio can exist because of stacking faults. The coercivity of assemblies of different nanorods was systematically measured, and the highest values were obtained for the smallest diameter and the largest structural coherence length. Micromagnetic simulations were performed to account for the dependence of the coercive field on the diameter. An important observation is that simple coherent magnetization rotation models do not apply to these magnetic nano-objects. Even for very small diameters （Dm = 5-10 nm） well below the theoretical coherent diameter Dcoh（CO）= 24 nm, we observed inhomogeneous reversal modes dominated by nucleation at the rod edges or at structural defects such as stacking faults. We conclude that, in order to produce high-coercivity materials based on nanowires, moderate aspect ratios of 5-10 are sufficient for providing a structural coherence similar to the morphological aspect ratio. Thus, the first priority should be to avoid the formation of stacking faults within the Co nanowires.

关键词： nanorod nanowire permanent magnets micromagnetic calculations shape anisoteopy

Algorithm for the management of knee osteoarthritis: from evidence-based medicine to real-life

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Algorithm for the management of knee osteoarthritis: from ev...

第十届全国免疫学学术大会

作者： jean-yves Reginster

来源： cnki会议评论

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取代聚苯胺的聚集态结构

物理化学学报 2002年第3期18卷 237-242页

作者：戴李宗许一婷 jean-yves GAL 吴辉煌厦门大学化学化工学院固体表面物理化学国家重点实验室厦门361005 UMR Laboratoire Hydrosciences(CNRS UMIIIRD)Maison des Sciences del'Eau de MontpellierUniversite Montpellier Ⅱ

环取代基及掺杂对聚苯胺分子链结构产生影响的同时也对大分子聚集态结构产生影响.通过对聚合物膜的XRD、SEM研究,表明在所合成的环取代聚苯胺衍生物中,聚合物的结晶性依POT(聚邻甲苯胺)、PDMAn(聚-2,5-二甲氧基苯胺)、PmClAn(聚间氯苯胺... 详细信息

环取代基及掺杂对聚苯胺分子链结构产生影响的同时也对大分子聚集态结构产生影响.通过对聚合物膜的XRD、SEM研究,表明在所合成的环取代聚苯胺衍生物中,聚合物的结晶性依POT(聚邻甲苯胺)、PDMAn(聚-2,5-二甲氧基苯胺)、PmClAn(聚间氯苯胺)顺序增加;与本征态的比较,质子酸掺杂后聚合物的结晶性有所提高.POT基本上表现出了非晶聚合物的性质;PDMAn具有同质多晶的结构特征,但结晶度较低;PmClAn表现出了典型高分子晶体性质,符合单斜晶系的特征(晶胞参数为a=0.679nm,b=2.304nm,c=0.5734nm,α=90°,β=100.9°,γ=90°).采用HyperChem程序包中的MM+分子力学方法对1H-NMR和XRD实验结果进行结构优化,确定了苯式结构/醌式结构为3/2的PmClAn大分子链的构象.

关键词：环取代聚苯胺衍生物结晶性聚集态结构大分子链构象 XRD SEM

Laparoscopic management of an ectopic pregnancy after in vitro fertilization and embryo transfer at CHRACERH:A case report

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Laparoscopic, Endoscopic and Robotic Surgery 2018年第3期1卷 70-73页

作者： Belinga Etienne Noa Ndoua Claude Cyrille Ayissi Gregory Kasia Onana yves Bertrand Kasia jean-Marie Department of Gynecology and Obstetrics Faculty of Medicine and Biomedical ScienceUniversity of Yaounde IYaoundeCameroon Hospital Center for Research and Application in Endoscopic Surgery and Human Reproduction YaoundeCameroon

*** Initially,in vitro fertilization and embryo transfer(IVF-ET)was designed to solve tubal factors infertility(TFI)by placing the embryo(s)within the uterine ***,in some cases,an ectopic implantation occurs as the embryo can enter the *** pregnancy(EP)is the location of the pregnancy outside the intrauterine *** prevalence of EP following assisted reproductive technology(ART)ranges between 2.1%and 8.6%of all pregnancies and it can reach up to 11%inwomen with tubal factors infertility history.

关键词： Ectopic pregnancy Laparoscopic management In vitro fertilization Embryo transfer

Implantable cardiac defibrillators in octogenarians

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Journal of Geriatric Cardiology 2023年第1期20卷 23-31页

作者： Maarten Pauwelyn Sebastian Ingelaere Ruben Hoffmann Johan Vijgen Georges H.Mairesse Ivan Blankoff yves Vandekerckhove jean-Benoit le Polain de Waroux Bert Vandenberk Rik Willems University Hospitals Leuven CardiologyLeuvenBelgium KU Leuven Department of Cardiovascular SciencesLeuvenBelgium UZA Department of CardiologyAntwerpBelgium Jessa Ziekenhuis Department of CardiologyHasseltBelgium Cliniques du Sud Luxembourg Department of CardiologyArlonBelgium CHU Charleroi Department of CardiologyCharleroiBelgium AZ Sint-Jan Department of CardiologyBruggeBelgium University of Calgary Libin Cardiovascular InstituteCalgaryCanada

OBJECTIVE Implantable cardiac defibrillators(ICD)implantation in the very elderly remains *** aimed to describe the experience and outcome of patients over 80 years old implanted with an ICD in *** Data were extracted from the national QERMID-ICD *** implantations performed in octogenarians between February 2010 and March 2019 were *** on baseline patient characteristics,type of prevention,device configuration and all-cause mortality were *** determine predictors of mortality,multivariable Cox proportional hazard regression modelling was *** Nationwide,704 primo ICD implantations were performed in octogenarians(median age 82,IQR 81-83 years;83% male and 45% secondary prevention).During a mean follow-up of 3.1±2.3 years,249(35%)patients died,of which 76(11%)within the first year after *** multivariable Cox regression analysis age(HR=1.15,P=0.004),oncological history(HR=2.43,P=0.027)and secondary prevention(HR=2.23,P=0.001)were independently associated with 1-year mortality.A better preserved left ventricular ejection fraction(LVEF)was associated with a better outcome(HR=0.97,P=0.002).Regarding overall mortality multivariable analysis withheld age,history of atrial fibrillation,centre volume and oncological history as significant *** LVEF was again protective(HR=0.99,P=0.008).CONCLUSIONS Primary ICD implantation in octogenarians is not often performed in *** this population,11%died within the first year after ICD *** age,oncological history,secondary prevention and a lower LVEF were associated with an increased one-year ***,low LVEF,atrial fibrillation,centre volume and oncological history were indicative of higher overall mortality.

关键词： prevention implantation protective

Channel Transmission Behavioral Modeling Dedicated to WSNs

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Journal of Energy and Power Engineering 2012年第7期6卷 1042-1049页

作者： Nasreddine Nadim Boizard jean Louis Christophe Escriba Fourniols jean yves Laboratory for Analysis and Architecture of Systems LAAS University of Toulouse Toulouse F-31077 France

The design, manufacture and deployment of embedded systems become increasingly complex and multidisciplinary process. Before the steps of manufacturing and deployment, a simulation and validation phase is necessary. Given the increasing complexity of systems such as telecommunications systems, control systems and others, a specific simulation and validation process must take place. This simulation ideally made in a single development environment should cover different areas and all components of the system. In this paper, the authors briefly describe the behavioral models of the elements of a large scale WSN （wireless sensors network） used to create simulator, focusing specifically on the model of the transmission channel, and how it can retrieve results from the behavioral simulator. In side to legacy network simulator, for the testing and modeling of communication protocols, this simulator should not omit WSN specific aspect, in accuracy it covers the modeling of node platforms, protocols, and real world phenomena.

关键词： WSN VHDL-AMS BER PER.

Recycling of Alum from Water Treatment Residue and Reuse It as a Flocculating Agent for Raw Water Treatment

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Journal of Geoscience and Environment Protection 2018年第12期6卷 216-226页

作者： Pascaline Sanga yves Iradukunda jean Claude Munyemana College of Petrochemical Engineering Lanzhou University of Technology Lanzhou China University of Chinese Academy of Sciences Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou China

The chemical coagulation-flocculation technology is touted as one of the valuable techniques and widely used for wastewater treatment because of its simplicity and effectiveness. So far, a number of flocculants have been fabricated to ameliorate the flocculation process in water treatment such as alum, polyaluminium chloride. Despite its broad application in water treatment, accumulation of alum in sludge has been reported as the main source of a disposal problem. Furthermore, recent studies suggested that the presence of alum in sludge may lead to human health problems. Here in, we have used alkalization method to recover alum present in sludge collected from Kimisagara water treatment plant located in Kigali capital city of Rwanda. The recovered alum was used more than one time and showed excellent flocculation efficiency. Some physical parameters such as pH, Total Suspended Solids (TSS), Total Dissolved Solids (TDS), Conductivity and Turbidity were systematically tested and compared with those of World Health Organization (WHO) and Rwanda Standards Board (RSB) standards for drinking water. The results showed that alum present in sludge can be recovered and reused for multiple times.

关键词： Sludge Alum Flocculation Turbidity Kimisagara

Rabeprazole test for the diagnosis of gastro-oesophageal reflux disease: Results of a study in a primary care setting

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World Journal of Gastroenterology 2006年第16期12卷 2569-2573页

作者： Stanislas Bruley des Varannes Sylvie Sacher-Huvelin Fabienne Vavasseur Claude Masliah Marc Le Rhun Philippe Aygalenq Sylvie Bonnot-Marlier yves Lequeux jean Paul Galmiche Institut des Maladies de l'Appareil Digestif CIC-INSERM-CHU-44083 NANTES cedexFrance CH Draguignan France Laboratoire JANSSEN-CILAG-1 Avenue Camille Desmoulins -92787 ISSY les MOULINEAUX cedexFrance 4 rue de la Tourelle-44230 SAINT PERE en RETZFrance

AIM： To determine the diagnostic value of the rabeprazole test in patients seen by general practitioners. METHODS： Eighty-three patients with symptoms suggestive of GERD were enrolled by general practitioners in this multi-centre, randomized and doubleblind study. All patients received either rabeprazole （20 mg bid） or a placebo for one week. The diagnosis of GERD was established on the presence of mucosal breaks at endoscopy and/or an abnormal esophageal 24-h pH test. The test was considered to be positive if patients reported at least a ＂clear improvement＂ of symptoms on a 7-point Likert scale. RESULTS： The sensitivities of the test for rabeprazole and the placebo were 83% and 40%, respectively. The corresponding specificity, positive and negative predictive values were 45% and 67%, 71% and 71%, and 62% and 35%, respectively. A receiver operating characteristics （ROC） analysis confirmed that the best discriminatory cut-off corresponded to description of ＂clear improvement＂ CONCLUSION： The poor specificity of the proton-pump inhibitor （PPI） test does not support such an approach to establish a diagnosis of GERD in a primary care setting.

关键词： Gastro-oesophageal reflux disease Diagnostic tool Rabeprazole Proton pump inhibitors Primary care