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Journal of Renewable Materials 2018年第5期6卷 464-476页

作者： Marwa Abida Jamel Mars Florian Gehring Alexandre Vivet Fakhreddine Dammak Normandie Univ ENSICAENUNICAENCEACNRSCIMAP14000 CaenFrance Mechanical Modeling and Manufacturing Laboratory(LA2MP) National School of Engineers of SfaxUniversity of SfaxB.P 1173-3038SfaxTunisia Laboratory of Electromechanical Systems(LASEM) National Engineering School of SfaxUniversity of SfaxB.P.1173-3038SfaxTunisia

Based on experimental test results,flax fiber reinforced polymer composites are characterized by nonlinear visco-elastoplastic *** aim of this work is to model the quasi-unidirectional flax fiber reinforced composite behavior through a three dimensional formulation with orthotropic elasticity and orthotropic plasticity using Hill *** isotropic hardening and Johnson Cook parameters are identified from unidirectional tensile tests at different strain *** adjustment of Hill’s yield criterion is developed based on yield stresses obtained in tensile tests at different *** numerical integration of the constitutive equations is implemented in a user-defined material,UMAT subroutines for the commercial finite element code *** model parameters are identified using tensile tests,the model needs to be validated by confronting it with other experimental *** is why experimental and numerical three-point bending tests are carried out in order to validate the proposed model with tests that have not served for the ***,a numerical parametric study on low velocity impact of a flax/epoxy composite circular plate is investigated.

关键词： Visco-elastoplasticity anisotropic behavior impact simulation flax fiber composites

Free Cyclic Actions on Surfaces and the Borsuk-Ulam Theorem

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Acta Mathematica Sinica,English Series 2022年第10期38卷 1803-1822页

作者： Daciberg Lima GONCALVES John GUASCHI Vinicius Casteluber LAASS Departamento de Matematica IMEUniversidade de Sao PauloRua do Matao 1010 CEP:05508-090Sao Paulo-SPBrazil Normandie Univ. UNICAENCNRSLMNO14000 CaenFrance Universidade Federal da Bahia IMEDepartamento de MatematicaAv.Milton SantosS/N Ondina CEP:40170-110Salvador-BABrazil

Let M and N be topological spaces,let G be a group,and letτ:G×M→M be a proper free action of *** this paper,we define a Borsuk-Ulam-type property for homotopy classes of maps from M to N with respect to the pair(G,τ)that generalises the classical antipodal Borsuk-Ulam theorem of maps from the n-sphere S^(n) to R^(n).In the cases where M is a finite pathwise-connected CWcomplex,G is a finite,non-trivial Abelian group,τis a proper free cellular action,and N is either R^(2) or a compact surface without boundary different from S^(2) and RP^(2),we give an algebraic criterion involving braid groups to decide whether a free homotopy class β∈[M,N]has the Borsuk-Ulam *** an application of this criterion,we consider the case where M is a compact surface without boundary equipped with a free actionτof the finite cyclic group *** terms of the orient ability of the orbit space Mof M by the actionτ,the value of n modulo 4 and a certain algebraic condition involving the first homology group of M,we are able to determine if the single homotopy class of maps from M to R^(2) possesses the Borsuk-Ulam property with respect to(Z_(n),τ).Finally,we give some examples of surfaces on which the symmetric group acts,and for these cases,we obtain some partial results regarding the Borsuk-Ulam property for maps whose target is R^(2).

关键词： Borsuk-Ulam theorem cyclic groups braid groups surfaces

Supercapacitors and Battery Energy Management Based on New European Driving Cycle

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Journal of Energy and Power Engineering 2012年第2期6卷 168-177页

作者： Mamadou Bailo Camaral Brayima Dakyo Hamid Gualous GREAH Laboratory Technical Sciences Faculty University of Havre Le Havre 76058 France LUSAC Laboratory University of Caen Cherbourg-Octeville 50100 France

This paper presents a new strategy of embedded energy management between battery and supercapacitors （SC） for hybrid electric vehicles （HEV） applications. This proposal is due to the present trend in the field, knowing that the major drawback of the HEV is the autonomy problem. Thus, using supercapacitors and battery with a good energy management improves the HEV performances. The main contribution of this paper is focused on DC-bus voltage and currents control strategies based on polynomial controller. These strategies are implemented in PICI8F4431 microcontroller for DC/DC converters control. Due to reasons of cost and available components （no optimized）, such as the battery and power semiconductors （IGBT）, the experimental tests are carried out in reduced scale （2.7 kW）. Through some simulations and experimental results obtained in reduced scale, the authors present an improved energy management strategy for HEV.

关键词： Battery electric machine energy storage supercapacitors polynomial control hybrid electric vehicles DC/DCconverter.

Evaluation of Mineral Elements Content of Senegal Fruits

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Journal of Minerals and Materials Characterization and Engineering 2022年第2期10卷 163-173页

作者： Rokhaya Sylla Gueye Jérôme Ledauphin Fabienne Baraud Lydia Leleyter Mélanie Lemoine Rokhaya Gueye Adama Diedhiou Mamadou Balde Nango Gaye Matar Seck Djibril Fall Alassane Wele Laboratoire de Chimie Physique Minérale Organique et Thérapeutique Université Cheikh Anta Diop (UCAD) Dakar Sénégal Unité de Recherche “Aliments Bioprocédés Toxicologie Environnement” Université de Caen Normandie Caen France Laboratoire de Chimie Analytique et Bromatologie (UCAD) Dakar Sénégal

This study determined mineral value and antioxidant activity of Senegal fruits for contributing to improving healthy diet and preventing some chronic diseases. Mineral element contents of Dialium guineense, Landolphia heudelotti, Mangifera indica, Cyperus esculentus and Saba senegalensis, which are widely available and consumed, were studied. The results by ICP-OES spectrophotometry after acid mineralization showed highest levels of (per 100 g fruits), calcium (158 mg), potassium (1018 mg), magnesium (532 mg), zinc (26 mg) with juice of Landolphia heudelotti fruit pulp. Mangifera indica pulp is richer in sodium (89 mg), phosphorus (556 mg), sulphur (384 mg) and silicon (110 mg). Dialium senegalensis pulp is richer in iron (23 mg) and manganese (19 mg). Lyophilized Cyperus esculentus rhizomes analyzed by atomic absorption spectrophotometry gave highest concentrations of (per 100 g fruits), calcium (2550 mg), potassium (11,843 mg) and magnesium (7669 mg) but sodium content (22 mg) is lower. In vitro antioxidant activity evaluation with the DPPH radical showed for 10 mg/ml concentration, highest inhibition percentage for Saba senegalensis 4.03%, followed by Landolphia heudelotti and Dialium guineense, which were significantly similar 2.29% and 2.20% respectively, Mangifera indica 1.7% and finally Cyperus esculentus 0.5%, but much lower compared to the ascorbic acid equal to 96.32% used as a reference.

关键词： Fruits Senegal Mineral Elements Antioxidant Activity

Preparation and properties of Ni-coated WC powder and highly impact resistant and corrosion resistant WC-Ni cemented carbides

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Transactions of Nonferrous Metals Society of China 2022年第6期32卷 1935-1947页

作者： Fan-lu MIN Song-bai YU Sheng WANG Zhan-hu YAO Jacques Guillaume NOUDEM Si-jin LIU Jian-feng ZHANG Key Laboratory of Geomechanics and Embankment Engineering Ministry of EducationHohai UniversityNanjing 210098China College of Civil and Transportation Engineering Hohai UniversityNanjing 210098China College of Mechanics and Materials Hohai UniversityNanjing 210098China CCCC Tunnel Engineering Company Limited Beijing 100102China CRISMAT-ENSIcaen(UMR-CNRS 6508) Universitéde Caen-Basse-NormandieCaenF-14050France China Railway 14th Bureau Group Co. Ltd.Jinan 250101China

WC powders were uniformly coated by Ni nanoparticles through a combined chemical co-precipitation and subsequent high temperature hydrogen reduction strategy(abbreviated as CM-WCN),and then were consolidated by vacuum sintering at 1450°C for 1 h to obtain WC−Ni cemented *** microstructure and properties of the as-consolidated CM-WCN were *** average grain size of WC in the consolidated CM-WCN was calculated to be in the range of 3.0−3.8μm and only few pores were observed.A relative density of 99.6%,hardness of HRA 86.5 and bending strength of 1860 MPa were obtained for the CM-WCN−10wt.%Ni,and the highest impact toughness of 6.17 J/cm^(2 )was obtained for the CM-WCN−12wt.%Ni,surpassing those of the hand mixed WC−Ni(HM-WCN)cemented carbides examined in this study and the other similar materials in the ***-WCN cemented carbides possess excellent mechanical properties,due to their highly uniform structure and low porosity that could be ascribed to the intergranular-dominated fracture mode accompanied by a large number of plastic deformation tears of the bonding *** addition,the corrosion resistance of CM-WCN was superior to that of HM-WCN at the Ni content of 6−12 wt.%.

关键词： WC−Ni cemented carbides chemical co-precipitation method high temperature hydrogen reduction strategy Ni content microstructure impact toughness corrosion resistance

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心室同步化重建治疗扩张型心肌病

山东医药 2003年第28期43卷 3-5页

作者：周晗张嘉莹高传玉 SCANU Patrice 河南省人民医院河南郑州450003 法国CHU de caen

目的　观察心室同步化重建起搏对扩张型心肌病顽固性充血性心衰的治疗效果。方法　对 12例临床表现为顽固性心衰 ,合并左束支阻滞的扩张型心肌病患者行双心室同步起搏治疗。观察术中、术后 3个月、6个月左室电极的起搏参数 ,以及术前、... 详细信息

目的　观察心室同步化重建起搏对扩张型心肌病顽固性充血性心衰的治疗效果。方法　对 12例临床表现为顽固性心衰 ,合并左束支阻滞的扩张型心肌病患者行双心室同步起搏治疗。观察术中、术后 3个月、6个月左室电极的起搏参数 ,以及术前、术后 3个月的 QRS波时限、左室射血分数、左室舒张末内径 (L VDD)、二尖瓣反流量、最大氧摄取量 (VO2 max)与临床症状变化。结果　随访 3～ 2 0个月 ,患者左室电极的起搏阈值、阻抗及感知各参数值稳定 ,起搏功能良好。与术前相比 ,术后 3个月心功能指标均明显改善 (P <0 .0 5 ) ,且随着时间的延长持续改善。随访期间猝死 1例 ,接受心脏移植 1例。结论　心室同步化重建是治疗室间传导异常充血性心衰的有效新方法。三腔起搏器可改善扩张型心肌病患者的血流动力学、心功能和心衰症状。左室电极植入成功率高 ,性能稳定 ,安全可靠。三腔双心室同步房室顺序起搏心脏自动复律除颤器 (ICD)不仅可治疗心衰 ,同时具有良好的抗室性心律失常。

关键词：心室同步化重建治疗扩张型心肌病顽固性充血性心力衰竭心脏起搏

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应用三腔起搏器治疗老年顽固性心衰

中国老年学杂志 2003年第8期23卷 506-507页

作者：周晗 SCANU Patrice 河南省人民医院心内科河南郑州450003 法国CHU de caen

目的　观察老年难治性心衰患者应用双心室三腔起搏器治疗的临床效果。方法　选择 1 2例 (其中男 1 1例 ,年龄 71 .2± 9岁 )药物治疗无效的严重心衰患者进行三腔起搏器治疗 (其中 4例安装三腔 ICD)。观察术前、术后 3个月、6个月的 QRS... 详细信息

目的　观察老年难治性心衰患者应用双心室三腔起搏器治疗的临床效果。方法　选择 1 2例 (其中男 1 1例 ,年龄 71 .2± 9岁 )药物治疗无效的严重心衰患者进行三腔起搏器治疗 (其中 4例安装三腔 ICD)。观察术前、术后 3个月、6个月的 QRS波时限、EF值、左室舒张末期内径、二尖瓣返流量、VO2 max以及临床症状的变化情况。结果　随访 3～ 1 2个月 ,全部病例术后 3个月心功能的各项指标与术前相比均有明显改善 (P<0 .0 5) ,且随着随访期的延长有持续改善的趋势。随访期间 1例猝死。结论　双心室同步起搏是治疗难治性心衰的有效的新方法 ,可改善患者血流动力学、心功能和心衰的临床症状。三腔 ICD不仅可进行心衰的双心室同步治疗 ,同时具有良好的抗室性心律失常预防猝死的作用。对具有安装三腔起搏器或三腔 ICD指征的老年心衰患者进行双心室同步治疗安全有效。

关键词：三腔起搏器治疗老年人顽固性心衰双心室同步治疗室性心律失常猝死血液动力学

Environmentally benign synthesis of crystalline nanosized molecular sieves

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Green Energy & Environment 2020年第4期5卷 394-404页

作者： Xiaoxin Chen Guoju Yang Valentin Valtchev State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun130012JilinChina International Center of Future Science Jilin UniversityChangchun130012JilinChina Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences189 Song Ling Rd QingdaoShandong266101China Normandie Univ ENSICAENUNICAENCNRSLaboratoire Catalyse et Spectrochimie6 Marechal Juin14050CaenFrance

Zeolites and zeo-type materials with nanosized dimensions are of great practical interest owing to their favorable transport properties,faster adsorption kinetics,and large external surface *** mini-review presents recent developments in the organic template-free synthesis of nanosized zeolites and related *** advantages and challenges of these methods are addressed with particular attention to the green synthesis of nanozeolites.

关键词： Zeolites Organic template-free Nanocrystals Green synthesis

暂时全面性遗忘的真正含义:142例病例的深入研究和文献回顾结果

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世界核心医学期刊文摘(神经病学分册) 2006年第11期 14-15页

作者： Quinette P Guillery-Girard B Dayan J F.Eustache 王鹏 Inserm -EPHE Universitéde Caen Basse-NormandieCHU Cte de Nacre 14033 Caen Cedex France Prof.

Since the first reports of transient global amnesia (TGA) were published in 1956, several neuropsychological and functional imaging studies have shed light on different aspects of this neurological syndrome. By establishing diagnostic criteria, Hodges and Warlow (1990b) have made it far easier to identify clinical TGA-related features. However, no comprehensive survey has been yet carried out in order to validate their criteria/findings or provide information about previously unknown features. In the present paper, (i) we review the literature published since Hodges and Warlow’s study and seek to characterize the demographic and clinical features of TGA more accurately, (ii) we report 142 personal TGA cases, with supplementary information regarding both episodes and patients, such as precipitating events, associated symptoms and personality, and (iii) we suggest the existence of different groups of TGA patients, on the basis of a hierarchical cluster analysis. This revealed that in women, episodes are mainly associated with an emotional precipitating event, a history of anxiety and a pathological personality. In men, they occur more frequently after a physical precipitating event. In younger patients, a history of headaches may constitute an important risk factor. No link was found with vascular risk factors. The relevance of each of the above-mentioned variables is discussed in the light of our classification. An extensive description of cases from both the literature and our patient population allows us to refine the characterization of clinical TGA features.

关键词：全面性遗忘 TGA 病例

S-21007,强效5-羟色胺3受体部份激动剂,对小鼠焦虑的作用(英文)

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中国药理学报 1999年第9期20卷 805-815页

作者： Philippe DELAGRANGE René MISSLIN Thomas W SEALE Bruno PFEIFFER Sylvain RAULT Rierre RENARD Institut de Recherches Internationales Servier 92415 Courbevoie Cdex FranceLaboratoire d'Ethologie et de Neurobiologie-URA CNRS 1295 Universit Louis Pasteur 67000 Strasbourg FranceDepartment of Pediatrics University of Oklahoma Health Oklahoma City OK 73190 USAInstitut de Recherches Internationales Servier 92415 Courbevoie Cdex FranceCERMN Universit de Caen 14032 Caen Cdex FranceInstitut de Recherches Internationales Servier 92415 Courbevoie Cdex France

AIM: To study the effect of S-21007, a 5-HT_3partial agonist in different animal models of anxiety inmice. METHODS: S-21007 effects were evaluatedin the behavior tests after intraperitioneal and oral acutetreatment or in the light/dark test after both acute andchronic treatments. RESULTS: S-21007 presentedanxiolytic-like properties after acute administration inthe light/dark box test, the mirrored chamber test, andthe elevated plus-maze at be doses 10 ng·kg^(-1)-100μg·kg^(-1), 1-100 μg·kg^(-1) and 10-100 μg·kg^(-1),respectively. In the light/dark box test, S-21007 wasactive orally after acute treatment at 100 ng·kg^(-1)-10mg·kg^(-1) and after chronic treatment (14 d) at 1-10μg·kg^(-1). S-21007 was devoid of sedative or stimula-

关键词： S-21007 血清素激动药焦虑动物行为药理