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Durability of Lightweight Concrete Using Oil Palm Shell as Aggregates

Open Journal of Civil Engineering 2021年第1期11卷 1-13页

作者： Yasmine Binta Traore Adamah messan Kinda Hannawi jean gerard William Prince François Tsobnang Université de Fada N’Gourma/Ecole Supérieure d’Ingénierie (ESI) Fada N’Gourma Burkina Faso Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE) Laboratoire Eco-Matériaux et Habitats Durables (LEMHaD) Ouagadougou Burkina Faso Institut National des Sciences Appliquées de Rennes (INSA-Rennes) Laboratoire de Génie Civil et de Génie Mécanique (LGCGM) Rennes France Centre de Coopération International en Recherche Agronomique pour le Développement (CIRAD) Unité de recherche Biomass Wood Energy and Bioproducts (BioWooEB) Montpellier France

Oil Palm Shell (OPS) concrete can be used in different fields of construction. To determine more accurately the fields of application, it is important to know and understand the behaviour of OPS concrete over the long term and when it is in aggressive environments. This paper presents the results of studies conducted on the durability of OPS concrete. Water absorption capacity, electrical resistivity and apparent diffusion of chloride ions have been measured on different concrete samples. In addition, the behaviour of OPS concretes to carbonation was studied in an environment rich in carbon dioxide. Results show that OPS concrete has an absorptivity of 0.97 kg/m2·h1/2, an electrical resistivity of 64.37 Ω·m and an apparent diffusion coefficient of chloride ions of 3.84mily:Verdana;">mily:Verdana;">mily:Verdan

关键词： Oil Palm Shell Lightweight Concrete Durability Carbonation

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Tailoring the properties of quantum dot-micropillars by ultrafast optical injection of free charge carriers

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Light(Science & Applications) 2021年第11期10卷 2083-2097页

作者： Emanuel Peinke Tobias Sattler Guilherme m.Torelly Patricia L.Souza Sylvain Perret Joel Bleuse Julien Claudon Willem L.Vos jean-m.chel gerard UniversitéGrenoble Alpes CEAIRIG-PHELIQS“Nanophysique et Semiconducteurs”groupF-38000GrenobleFrance LabSem-CETUC Pontificia Universidade Catolica do Rio de JaneiroRio de Janeiro22451-900Brazil Complex Photonic Systems(COPS) MESA+Institute for NanotechnologyUniversity of TwenteP.O.Box 2177500 AEEnschedethe Netherlands

We review recent studies of cavity switching induced by the optical injection of free carriers in micropillar cavities containing quantum *** the quantum dots as a broadband internal light source and a streak camera as detector,we track the resonance frequencies for a large set of modes with picosecond time *** report a record-fast switch-on time constant(1.5 ps)and observe major transient modifications of the modal structure of the micropillar on the 10 ps time scale:mode crossings are induced by a focused symmetric injection of free carriers,while a lifting of several mode degeneracies is observed when off-axis injection breaks the rotational symmetry of the *** show theoretically and experimentally that cavity switching can be used to tailor the dynamic properties of the coupled QD-cavity *** report the generation of ultrashort spontaneous emission pulses(as short as 6 ps duration)by a collection of frequency-selected QDs in a switched pillar *** pulses display a very small coherence length,attractive for ultrafast speckle-free ***,the control of QD-mode coupling on the 10 ps time scale establishes cavity switching as an appealing resource for quantum photonics.

关键词： lifting injection cavity

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NG2 Cell Response in the CNP-EGFP mouse After Contusive Spinal Cord Injury

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神经损伤与功能重建 2009年第1期4卷 33-47页

作者： JUDITH m LYTLE RAmESH CHITTAJALLU jean R WRATHALL VITTORIO GALLO Department of Neuroscience Georgetown University Interdisciplinary Program in Neuroscience Georgetown University Center for Neuroscience Research Children's National Medical Center

成年动物中枢神经系统中的NG2细胞具有异质性。脊髓损伤(SCI)后,具有少突胶质前体细胞(OPCs)功能的NG2细胞亚型如何产生反应性变化及对其正常的发育过程有何影响目前还不清楚。本文采用少突胶质细胞系细胞表达EGFP的CNP-EGFP小鼠,研究... 详细信息

成年动物中枢神经系统中的NG2细胞具有异质性。脊髓损伤(SCI)后,具有少突胶质前体细胞(OPCs)功能的NG2细胞亚型如何产生反应性变化及对其正常的发育过程有何影响目前还不清楚。本文采用少突胶质细胞系细胞表达EGFP的CNP-EGFP小鼠,研究正常和SCI后的NG2细胞的特征。在正常小鼠的白质中,对EGFP+NG2+双极细胞和EGFPnegNG2+多极细胞进行鉴别。SCI后,白质损伤边缘区中的EGFP+NG2+细胞3 d增殖达高峰,损伤中心区的EGFPnegNG2+细胞增殖在损伤后7 d达高峰。损伤后EGFP+NG2+细胞的Olig2、Sox10、Sox17等转录因子、基本的膜电生理参数以及钾电流表型均与发育过程增殖的OPCs一致。EGFPnegNG2+细胞不表达少突胶质发生中的转录因子。EGFP+CC1+少突胶质细胞6周时包含在EGFP+NG2+细胞增殖峰时表达BrdU的细胞。EGFPnegCC1+少突胶质细胞未被观察到。神经胶质生长因子2和成纤维细胞生长因子2处理促进少突胶质发生,提高EGFPnegNG2+细胞数量。因此,通过EGFP和转录因子表达,时空增殖类型及对生长因子的反应,两种类型的NG2+细胞对SCI刺激发生反应。SCI后EGFP+NG2+细胞经受细胞和生理变化特征,与在早期出生后的少突胶质发生过程中NG2+细胞中的变化类似。

关键词：少突胶质前体细胞 olig2 CNP基因内源性修复细胞增殖神经胶质生长因子成纤维细胞生长因子

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modeling of wireless SAW temperature sensor and associated antenna

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Instrumentation 2014年第1期1卷 8-14页

作者： Laurent ALLIES Eloi BLAmPAIN Hamid m'JAHED gerard PRIEUR Omar ELmAZRIA Institut jean Lamour UMR 7198 CNRS-Universite de Lorraine 54506 Vandoeuvre les NancyFrance

Surface acoustic wave(SAW)resonator used as wireless sensor was characterized and the parameters of its mBVD(modified Butterworth-Van Dyke)model were extracted versus *** extracted parameters lead toevaluate the resonator performancesin terms of Temperature coefficient of frequency(TCF)and quality factor(Q).An antenna was then associated with the SAW resonator and the entire system has been characterized and *** good agreement experiment-simulation allows to define the optimum operating conditions of the wireless sensor.

关键词： SAW resonator mBVD model Wireless sensor

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Petawatt and exawatt class lasers worldwide

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High Power Laser Science and Engineering 2019年第3期7卷 168-221页

作者： Colin N.Danson Constantin Haefner Jake Bromage Thomas Butcher jean-Christophe FChanteloup Enam A.Chowdhury Almantas Galvanauskas Leonida A.Gizzi Joachim Hein David I.Hillier Nicholas W.Hopps Yoshiaki Kato Efim A.Khazanov Ryosuke Kodama Georg Korn Ruxin Li Yutong Li Jens Limpert Jingui ma Chang Hee Nam David Neely Dimitrios Papadopoulos Rory R.Penman Liejia Qian Jorge J.Rocca andrey A.Shaykin Craig W.Siders Christopher Spindloe Sándor Szatmári Raoul m.G.m.Trines Jianqiang Zhu Ping Zhu Jonathan D.Zuegel AWE AldermastonReadingUK OxCHEDS Clarendon LaboratoryDepartment of PhysicsUniversity of OxfordOxfordUK CIFS Blackett LaboratoryImperial CollegeLondonUK NIF&Photon Science Directorate Lawrence Livermore National LaboratoryLivermoreUSA Fraunhofer Institute for Laser Technology(ILT) AachenGermany Chair for Laser Technology LLT RWTH Aachen UniversityAachenGermany University of Rochester Laboratory for Laser EnergeticsRochesterUSA Central Laser Facility STFC Rutherford Appleton LaboratoryChiltonDidcotUK LULI CNRSCEASorbonne UniversitesEcole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance Department of Physics The Ohio State UniversityColumbusUSA Centre for Ultrafast Optical Science University of MichiganAnn ArborUSA Intense Laser Irradiation Laboratory Istituto Nazionale di Ottica(INO)CNRPisaItaly Institute of Optics and Quantum Electronics Friedrich-Schiller-University Jena and Helmholtz InstituteJenaGermany The Graduate School for the Creation of New Photonics Industries NishikuHamamatsuJapan Institute of Applied Physics Russian Academy of SciencesNizhny NovgorodRussia Institute of Laser Engineering Osaka UniversitySuitaOsakaJapan ELI-Beamlines Institute of PhysicsCzech Academy of SciencesPragueCzech Republic State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China National Laboratory for Condensed matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Institute for Applied Physics(IAP)at Friedrich-Schiller-University Jena JenaGermany Helmholtz Institute Jena JenaGermany Fraunhofer Institute for Applied Optics and Precision Engineering(IOF) JenaGermany Key Laboratory for Laser Plasma(ministry of Education) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Centre for Relativistic Laser Science(CoReLS) Institute for Basic ScienceDepartment of Physics and Photon ScienceGwangju Institute of Science and Techno

In the 2015 review paper‘Petawatt Class Lasers Worldwide’a comprehensive overview of the current status of highpower facilities of>200 TW was *** was largely based on facility specifications,with some description of their uses,for instance in fundamental ultra-high-intensity interactions,secondary source generation,and inertial confinement fusion(ICF).With the 2018 Nobel Prize in Physics being awarded to Professors Donna Strickland and gerard mourou for the development of the technique of chirped pulse amplification(CPA),which made these lasers possible,we celebrate by providing a comprehensive update of the current status of ultra-high-power lasers and demonstrate how the technology has *** are now in the era of multi-petawatt facilities coming online,with 100 PW lasers being proposed and even under *** addition to this there is a pull towards development of industrial and multi-disciplinary applications,which demands much higher repetition rates,delivering high-average powers with higher efficiencies and the use of alternative wavelengths:mid-IR *** apart from a comprehensive update of the current global status,we want to look at what technologies are to be deployed to get to these new regimes,and some of the critical issues facing their development.

关键词： exawatt lasers high-power lasers petawatt lasers ultra-high intensity

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