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Physical-chemical and Mechanical characterization of the Bast Fibers of <i>Triumfetta cordifolia</i>***. from the Equatorial Region of cameroon

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Journal of Minerals and Materials characterization and Engineering 2020年第4期8卷 163-176页

作者： Armel Edwige Mewoli césar Segovia Fabien Betene Ebanda Atangana Ateba Pierre Marcel Anicet Noah Benoit Ndiwe Abel Emmanuel Njom Department of Mechanical Engineering ENSET University of Douala Douala Cameroon Laboratory of Mechanics University of Douala Cameroon Douala Cameroon cETELOR University of Lorraine CETELOR/27 rue Philippe SEGUIN Epinal France Laboratory of Mechanics Materials and Modelization National School of AGRO-Industrial Sciences (ENSAI) Physics Application and Engineering Ngaoundere University Ngaoundere Cameroon Laboratory of Mechanics Materials Structures and Integrated Manufacturing National Advanced School of Engineering University of Yaounde 1 Yaounde Cameroon

The project consists in the implementation of a biocomposite based on tannin resin and natural rubber matrices with the bast fibres of Triumfetta cordifolia ***.“Okong” from the equatorial region of cameroon as reinforcement. A study of this still little known fibre is necessary. This paper evaluates the physico-chemical and mechanical characteristics of the fibers. The fibers are extracted by us. A series of experiments is conducted for this purpose: morphological observation with a scanning electron microscope (SEM);density evaluation with a helium pycnometer;absorption rate evaluation according to the protocol available in the literature, Fourier Transform Infrared Spectrometry (FT-IR), chemical composition evaluation according to ASTM 1972 and ASTM 1977 standards, thermogravimetric analysis (TGA) and tensile tests on fiber bundles according to NF T25-501-3. The results show that the fiber is made up of several elementary fibers with oval cross-sections. A density of 1.477g/cm3 close to that of hemp. These fibers have a water absorption rate of 342.5%, which correlates with the presence of free hydroxyl functional groups obtained from the spectrometry study (FT-IR). chemical analysis reveals that the fiber is made up of celluloses (44.4%), hemicelluloses (30.8%), lignins (18.9%), pectins (3.3%), waxes (0.5%) and minerals (2.1%). In addition, we learn that the fibers studied dehydrate at 11.49%, showinga notable thermal stability around 235°c with a peak thermal decomposition of cellulose located at 420°c. In terms of mechanical behaviour, the results reveal that the fibers offer a Young’s modulus in traction of 12.4 ± 6.9 GPa, a tensile strength of 526 ± 128 MPa and an elongation at break of 2.25%. The information thus obtained makes it possible to place these fibers in the same fiber group as flax and jute. They could therefore be used for the same types of applications. They also inform us that these fibers can withstand the temperat

关键词： Triumfetta cordifolia Fibers Morphology chemical Analysis Thermal Degradation Mechanical Behavior

FAIR Principles:Interpretations and Implementation considerations

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Data Intelligence 2020年第1期2卷 10-29,293-302,322页

作者： Annika Jacobsen Ricardo de Miranda Azevedo Nick Juty Dominique Batista Simon coles Ronald cornet Melanie courtot Merce crosas Michel Dumontier chris T.Evelo carole Goble Giancarlo Guizzardi Karsten Kryger Hansen Ali Hasnain Kristina Hettne Jaap Heringa Rob W.W.Hooft Melanie Imming Keith G.Jeffery Rajaram Kaliyaperumal Martijn GKersloot christine R.Kirkpatrick Tobias Kuhn Ignasi Labastida Barbara Magagna PeterMcQuilton Natalie Meyers Annalisa Montesanti Mirjam van Reisen philippe Rocca-Serra Robert Pergl Susanna-Assunta Sansone Luiz Olavo Bonino da Silva Santos Juliane Schneider George Strawn Mark Thompson Andra Waagmeester Tobias Weigel Mark D.Wilkinson Egon L.Willighagen Peter Wittenburg Marco Roos Barend Mons Erik Schultes Leiden University Medical center Leiden2333 ZAThe Netherlands Institute of Data Science Maastricht UniversityUniversiteitssingel 60Maastricht 6229 ERThe Netherlands Department of computer Science The University of ManchesterOxford RoadManchester M139PLUK Oxford e-Research centre Department of Engineering SciencesUniversity of OxfordOxford OX13PJUK School of chemistry Faculty of Engineering and Physical SciencesUniversity of SouthamptonSO171BJUK Amsterdam UMc University of AmsterdamAmsterdam 1000 GGThe Netherlands European Bioinformatics Institute(EMBL-EBI) HinxtonCambridgeCB101SDUK Harvard University CambridgeMassachusetts 02138USA Department of Bioinformatics–BiGcaT NUTRIMMaastricht UniversityMaastricht 6229 ERThe Netherlands conceptual and cognitive Modeling Research Group(cORE) Free University of Bozen-BolzanoBolzano 39100Italy Aalborg University Aalborg DK-9220Denmark Insight centre for Data Analytics National University of Ireland GalwayH91 TK33Ireland centre for Digital Scholarship Leiden University LibrariesLeiden2333 ZAThe Netherlands Department of computer Science Vrije Universiteit AmsterdamDe Boelelaan 11051081 HV AmsterdamThe Netherlands Dutch Techcentre for Life Sciences(DTL) UtrechtThe Netherlands SURF Utrecht 3511 EPThe Netherlands Keith G Jeffery consultants FaringdonUK castor EDc Paasheuvelweg 25Wing 5D1105 BPAmsterdamThe Netherlands San Diego Supercomputer center University of California San DiegoLa JollaCalifornia 92093USA Learning and Research Resources centre(cRAI) Universitat de Barcelona08007 BarcelonaSpain Environment Agency Austria A-1090 ViennaAustria University of Notre Dame 75004 ParisFrance Health Research Board(HRB) Dublin 2DO2 H638Ireland Liacs Institute of Advanced computer Science Leiden University2311 GJ LeidenThe Netherlands czech Technical University in Prague Faculty of Information Technology(FIT CTU)16000 Prague 6Czech Republic GO FAIR International Support&coordination Office(GFIScO) LeidenThe Netherlands Harvard catalys

The FAIR principles have been widely cited,endorsed and adopted by a broad range of stakeholders since their publication in *** intention,the 15 FAIR guiding principles do not dictate specific technological implementations,but provide guidance for improving Findability,Accessibility,Interoperability and Reusability of digital *** has likely contributed to the broad adoption of the FAIR principles,because individual stakeholder communities can implement their own FAIR ***,it has also resulted in inconsistent interpretations that carry the risk of leading to incompatible ***,while the FAIR principles are formulated on a high level and may be interpreted and implemented in different ways,for true interoperability we need to support convergence in implementation choices that are widely accessible and(re)-*** introduce the concept of FAIR implementation considerations to assist accelerated global participation and convergence towards accessible,robust,widespread and consistent FAIR *** self-identified stakeholder community may either choose to reuse solutions from existing implementations,or when they spot a gap,accept the challenge to create the needed solution,which,ideally,can be used again by other communities in the ***,we provide interpretations and implementation considerations(choices and challenges)for each FAIR principle.

关键词： FAIR guiding principles FAIR implementation FAIR convergence FAIR communities choices and challenges

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关于当代“生·活”城市实践的对话

时代建筑 2017年第2期60卷 71-74页

作者：赵德利菲利普.拉姆安瑞科.鲁伊斯-格力中国美术学院建筑艺术学院 philippe Rahm建筑事务所 cloud 9 Studio

相对于被动的、被单向占有和定义的建筑物体,到底是什么"力量"赋予建筑生命并使其主动散发城市的活力?是"生·活的城市或建筑"。作者在巴塞罗那与菲利普·拉姆和安瑞科.鲁伊斯-格力从能量和社会等方面进行了对谈,分享了不同的有关"生·... 详细信息

相对于被动的、被单向占有和定义的建筑物体,到底是什么"力量"赋予建筑生命并使其主动散发城市的活力?是"生·活的城市或建筑"。作者在巴塞罗那与菲利普·拉姆和安瑞科.鲁伊斯-格力从能量和社会等方面进行了对谈,分享了不同的有关"生·活"的城市实践的想法和做法。

关键词：能量建筑边界社会建筑实验建筑创作

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手与腕关节类风湿关节炎病变侵蚀的X线组合体层评价

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国际医学放射学杂志 2011年第2期 172-172页

作者： c.canella P.philippe V.Pansini J.Salleron R.M.Flipo A.cotten 白荣杰 Department of Musculoskeletal Radiology Centre de Consultations et d’Imagerie de l’Appareil LocomoteurCentre Hospitalier Régional Universitaire de Lille

目的以cT为参照,比较组合体层与X线摄影对类风湿关节炎(RA)病人手与腕骨侵蚀的检出。材料和方法本次研究获得当地伦理委员会的批准,并取得所有病人

关键词：体层摄影 cT 美术类风湿性关节炎类风湿关节炎腕关节

Histopathological and Ultrasound correlation in Women Presenting with Breast Lumps in Yaoundé, cameroon

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中跨横隔板对组合铁路桥梁静力和动力特性的影响(案例分析)

Open Journal of Radiology（放射学期刊） 2023年第4期

作者： Yann chris Mannel Eng Ambroise Merci Seme Engoumou Armel philippe Awana Sandrine Prisca Ndongo Onembele Junie Annick Metogo Ntsama Odile Fernande Zeh

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钢结构(中英文) 2008年第1期 86-86页

作者： Yannick Sieffert Gerard Michel philippe Ramondenc Jean-Francois Jullien

为高速列车而设计的中等跨度多肋铁路桥的桥梁上,混凝土桥面是提供横向刚度的主要构件,但横梁上的作用力是未知的。由于横梁需要现场操作和焊接,所以增加了桥梁的成本。研究了一种横隔板的影响,这种横隔板应用在法国的一个典型的多跨度... 详细信息

为高速列车而设计的中等跨度多肋铁路桥的桥梁上,混凝土桥面是提供横向刚度的主要构件,但横梁上的作用力是未知的。由于横梁需要现场操作和焊接,所以增加了桥梁的成本。研究了一种横隔板的影响,这种横隔板应用在法国的一个典型的多跨度铁路桥梁上。第一个目的是为了提出一种合适的建模方法,可以被用于评估在这种交通荷载呈横向分布的结构上应用横隔板的作用和有效性。第二个目的是为了探究应用横隔板的必要性。为解决这些问题,建立了一个三维模型和非线性材料本构关系,分析了带有横向横隔板的和不带横隔板的桥面在不同的静力荷载条件下(自重,UIc荷载,TGV)的反应。考虑到桥面的动力特性,TGV采用移动荷载模拟。在动力分析中还考虑到了火车的极限速度。静力和动力分析结果表明:横隔板可能并不是必须采用的,除非桥梁受到意外的侧向力作用。因此,在这些桥梁上也许可以不需要安装横隔板。

关键词：混凝土钢材桥梁组合多肋横隔板高速列车

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碎屑岩储层沉积特征研究

国外测井技术 2004年第1期19卷 45-60页

作者： carmen contreras Helena Gamero Nick Drinkwater cees R.Geel Stefan Luthi David Hodgetts Y.Greg Hu Erik Johannessen Melissa Johansson Akira Mizobe philippe Montaggioni Pieter Pestman Teikoku Oil Sanvi-Güere Satyaki Ray Richard Shang Art Saltmarsh 委内瑞拉加拉加斯 Teikoku石油有限公司日本东京法国clamart 艾伯塔省卡尔加里 Forest 石油公司阿拉斯加州Anchorage 英格兰剑桥荷兰Delft理工大学荷兰Delft 利物浦大学英格兰利物浦 Petro-canada公司加拿大艾伯塔省卡尔加里挪威国家石油公司挪威斯塔万格美国阿拉斯加州 Anchorage

地学家采用一系列可靠的仪器来加强对储层特性的认识，并模拟储层特征。井眼成象技术可以为地质家提供研究储层沉积特征所需要的高分辨率数据。地质家只有在了解了决定沉积岩储层特性的地质演变过程时，才有可能实现优化开采油气资源的... 详细信息

地学家采用一系列可靠的仪器来加强对储层特性的认识，并模拟储层特征。井眼成象技术可以为地质家提供研究储层沉积特征所需要的高分辨率数据。地质家只有在了解了决定沉积岩储层特性的地质演变过程时，才有可能实现优化开采油气资源的目的。

关键词：碎屑岩储层井眼成象技术分辨率沉积岩沉积学

1999～2006年急性冠脉综合征患者死亡及心力衰竭发生率降低

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美国医学会杂志（中文版） 2007年第6期26卷 323-330页

作者： Keith A. A. Fox philippe Gabriel Steg Kim A. Eagle Shaun G. Goodman Frederick A. Anderson christopher B. Granger Marcus D. Flather Andrzej Budaj Ann Quill Joel M. Gore 康俊萍（译）马长生（校） cardiovascular Research Division of Medical and Radiological Sciences The University of Edinburgh Edinburgh Scotland Hospital Bichat Paris France University of Michigan Health System Ann Arbor canadian Heart Research centre and Terrence Donnelly Heart centre Division of Cardiology St Michael＇s Hospital University of Toronto Toronto Ontario University of Massachusetts Medical School Worcester Royal Brompton ＆ Harefield NHS Trust London England Postgraduate Medical School Grochowski Hospital Warsaw Poland Duke University Medical center Durham NC 不详

背景：有关药物和介入治疗对ST段抬高型和非ST段抬高型急性冠脉综合征（non—ST-segment elevation acute coronary syndrome，NSTE AcS）患者的作用，随机试验已经提供了足够的证据，但是是否已经转化为相应的临床变化还不清楚。目的... 详细信息

背景：有关药物和介入治疗对ST段抬高型和非ST段抬高型急性冠脉综合征（non—ST-segment elevation acute coronary syndrome，NSTE AcS）患者的作用，随机试验已经提供了足够的证据，但是是否已经转化为相应的临床变化还不清楚。目的：确定ST段抬高型心肌梗死（ST-segment elevation myocardial infarction，STEMI）和NSTE AcS患者的院内治疗改变是否伴随临床结果的改善。设计、地点及患者：全球急性冠脉事件注册研究（Global Registry of Acute coronary Events，GRAcE）是一项多国家队列研究。自1999年7月1日至2006年12月31日，该研究共入选并随访了来自14个国家、113家医院的44372例AcS患者。主要观测指标：当前循证药物和介入治疗应用的趋势及患者预后（死亡、充血性心力衰竭、肺水肿、心源性休克、卒中和心肌梗死）。结果：随着研究时间的进展，相关药物的应用增加（β-受体阻滞剂、他汀类药物、血管紧张素转换酶抑制剂、行或未行经皮冠状动脉介入治疗[percutaneous coronary intervention，PcI]患者应用噻氯毗啶、糖蛋白Ⅱb／Ⅲa抑制剂和低分子肝素；P〈0．001）。STEMI患者药物再灌注治疗下降了22个百分点（95％可信区间[confidence interval，cI]，-27～-17），而直接PcI增加了37个百分点（95％cI，33—41）。在NSTEMI患者中，PcI的比例显著升高了18个百分点（95％cI，15～20）。充血性心力衰竭和肺水肿在STEMI患者中降低了9个百分点（95％cI，-12～-6），在NSTEAcS患者中降低了6．9个百分点（95％cI，-8．4～-4．7）。STEMI患者的院内死亡率降低了18个百分点（95％cI，-5．3～-1．9），心源性休克降低了24个百分点（95％cI，-4．3～-0．5）。校正了危险评分后，NSTEAcS患者的院内死亡率降低了0．7个百分点（95％cI，-1．7～0．3）；STEMI患者6个月随访时卒中发生率降低了0．8个百分点（95％cI，-1．7～0．1），心肌梗死发生率降低了2．8个百分点（95％cI，-6．4～0．9）。NSTEAcS患者6个月死亡率降低了1．6个百分点（95％cI，-3．0～-0．1），卒中发生率降低了0．7个百分点（95％cI，-1．4～0．1）。结论：在本项多国家观察性研究中，AcS患者治疗的改善与6个月新发心力衰竭、死亡率、卒中和心肌梗死发生率显著降低相关。

关键词：充血性心力衰竭急性冠脉综合征院内死亡率发生率经皮冠状动脉介入治疗血管紧张素转换酶抑制剂糖蛋白Ⅱb/Ⅲa抑制剂非ST段抬高型

‘Plug-and-play’ plasmonic metafibers for ultrafast fibre lasers

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Light(Advanced Manufacturing) 2022年第4期3卷 27-38页

作者： Lei Zhang Huiru Zhang Ni Tang Xiren chen Fengjiang Liu Xiaoyu Sun Hongyan Yu Xinyu Sun Qiannan Jia Boqu chen Benoit cluzel philippe Grelu Aurelien coillet Feng Qiu Lei Ying Wei E.I.Sha Xiaofeng Liu Jianrong Qiu Ding Zhao Wei Yan Duanduan Wu Xiang Shen Jiyong Wang Min Qiu college of Information Science and Electronic Engineering Zhejiang UniversityHangzhou 310027China Key Laboratory of 3D Micro/Nano Fabrication and characterization of Zhejiang Province School of EngineeringWestlake University18 Shilongshan RoadHangzhou 310024Zhejiang ProvinceChina Institute of Advanced Technology Westlake Institute for Advanced Study18 Shilongshan RoadHangzhou 310024Zhejiang ProvinceChina Laboratory of Infrared Material and Devices&Key Laboratory of Photoelectric Materials and Devices of Zhejiang Province Advanced Technology Research InstituteNingbo UniversityNingbo 315211China Laboratoire Interdisciplinaire carnot de Bourgogne UMR 6303 UniversitéBourgogne Franche-Comté9 avenue Alain Savary21078 DijonFrance Interdisciplinary center for Quantum Information and Department of Physics Zhejiang UniversityHangzhouChina School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China

Metafibers expand the functionalities of conventional optical fibres to unprecedented nanoscale light manipulations by integrating metasurfaces on the fibre tips,becoming an emerging light-coupling platform for both the nanoscience and fibre optics *** metafibers remain proof-of-concept demonstrations that mostly explore isolated bare fibres owing to the lack of standard interfaces with universal fibre ***,we develop methodologies for fabricating well-defined plasmonic metasurfaces directly on the end facets of commercial single-mode fibre jumpers using standard planar technologies and provide the first demonstration of their practical applications in the nonlinear plasmonic *** plug-and-play connections with fibre circuitry and arbitrary metasurface landscapes,the metafibers with tunable plasmonic resonances are implemented into fibre laser cavities,yielding all-fibre sub-picosecond(minimum 513 fs)soliton mode locked lasers at optical wavelengths of 1.5μm and 2μm,demonstrating their unusual polarimetric nonlinear transfer functions and superior saturation absorption *** nanofabrication process flow is compatible with existing cleanroom technologies,offering metafibers an avenue to become a regular member of functionalised fibre *** work paves the way toward the next generation of ultrafast lasers,optical frequency combs,and ultracompact‘all-in-fibre’optical systems.

关键词： Nonlinear plasmonics Metasurfaces Metafibers Fibre lasers Saturable absorption