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Electrodes based on nano-tree-like vanadium nitride and carbon nanotubes for micro-supercapacitors

Journal of Materials Science & Technology 2018年第6期34卷 976-982页

作者： Nadir Ouldhamadouche Amine Achour Raul Lucio-Porto Mohammad Islam Shahram Solayman Ali Arman Azin Ahmadpourian Hamed Achour Laurent Le Bri-zoual Mohamed Abdou Djouadi thierry brousse Laboratoire de Génie Physique Université lbn Khaldoun BP P 78 Zaaroura 14000 Tiaret Algeria National Institute of Scientific Research 1650 Bd. Lionel-Boulet Varennes QCJ3X1P7 Canada Universidad Autónoma de Nuevo León Facultad de lngeniería Mecdnica y Eléctrica San Nicolas de los Garza 66450 Nuevo León Mexico Universidad Autónoma de Nuevo León Centro de lnnovación Investigación y Desarrollo en lngeniería y Tecnología Apodaca 66600 Nuevo León Mexico Deanship of Scientific Research Advanced Manufacturing Institute King Saud University P.O. Box 800 Riyadh 11421 Saucli Arabia Department of Physics Science and Research Branch Islamic Azad University Tehran Iran Vacuum Technology Group ACECR Sharif Branch Tehrun Iran Young Researchers and Elite Club Arak Branch Islamic Azad University Arak Iran Institute of Condensed Matter Physics Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne Switzerland University of Rennes 1 Institut d'Electronique et de Télécommunications IETR - UMR CNRS 6164 Campus de Beaulieu -Bat 11D 263 Av General Leclerc 35042 Rennes cedex France Institut des MateriauxJean Rouxel (IMN) Universite de Nantes CNRS 2 rue de la Houssiniere BP32229 44322 Nantes Cedex 3 France Reseau sur le Stockage Electrochimique de l'Energie (RS2E) FR CNRS 3459 France

Vanadium nitride （VN） was deposited by DC-sputtering on a vertically aligned carbon nanotube （CNTs） template for the purpose of nano-structuration. This led to the fabrication of hierarchically composite electrodes consisting of porous and nanostructured VN grown on vertically aligned CNTs in a nano-treelike configuration for micro-supercapacitor application. The electrodes show excellent performance with an areal capacitance as high as 37.5 mF cm^-2 at a scan rate of 2 mV s^-1 in a 0.5 M K2504 mild electrolyte solution. Furthermore, the capacitance decay was only 15% after 20,000 consecutive cycles. Moreover, the capacitance was found to increase with VN deposit thickness. The X-ray photoelectron spectroscopy analyses of the electrodes before and after cycling suggest that the oxide layers that form at the VN surface is the responsible for the redox energy storage in this material. Such electrodes can compete with other transition metal nitride based electrodes for micro-supercapacitors.

关键词： Vanadium nitride CNTs Micro-supercapacitors Surface chemistry

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Genomic integrity of human induced pluripotent stem cells:Reprogramming, differentiation and applications

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World Journal of Stem Cells 2019年第10期11卷 729-747页

作者： Clara Steichen Zara Hannoun Eléanor Luce thierry Hauet Anne Dubart-Kupperschmitt INSERM U1082 IRTOMIT CHU de PoitiersPoitiers F-86021France Universitéde Poitiers Facultéde Médecine et PharmacieBatiment D16 rue de la milétrieTSA 5111586073 Poitiers Cedex 9France INSERM U1193 Hopital Paul BrousseVillejuif F-94800France UMR_S1193 UniversitéParis_SaclayH?pital Paul BrousseVillejuif F-94800France The Jenner Institute University of OxfordOxford OX3 7DQUnited Kingdom Departement Hospitalo-Universitaire Hepatinov Hopital Paul BrousseVillejuif F-94807France Service de Biochimie Pole BiospharmCHU de PoitiersPoitiers F-86021France Fédération Hospitalo-Universitaire SUPORT CHU de PoitiersPoitiers F-86021France

Ten years after the initial generation of induced pluripotent stem cells(hiPSCs)from human tissues,their potential is no longer questioned,with over 15000 publications listed on PubMed,covering various fields of research;including disease modeling,cell therapy strategies,pharmacology/toxicology screening and 3D organoid ***,despite evidences that the presence of mutations in hiPSCs should be a concern,publications addressing genomic integrity of these cells represent less than 1%of the *** a first overview of the mutation types currently reported in hiPSCs,including karyotype abnormalities,copy number variations,single point mutation as well as uniparental disomy,this review will discuss the impact of reprogramming parameters such as starting cell type and reprogramming method on the maintenance of the cellular genomic ***,a specific focus will be placed on culture conditions and subsequent differentiation protocols and how their may also trigger genomic aberrations within the cell population of ***,in a last section,the impact of genomic alterations on the possible usages of hiPSCs and their derivatives will also be exemplified and *** will also discuss which techniques or combination of techniques should be used to screen for genomic abnormalities with a particular focus on the necessary quality controls and the potential alternatives.

关键词： Induced pluripotent stem cells Genomic integrity Mutations Karyotype Differentiation Cell therapy Quality control Reprogramming

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法国莱法吉矿山

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地球与环境 1984年第8期 64-64页

作者： A.brousse 禤锐光

莱法吉矿山在法国科雷兹省,距巴黎约400公里,紧靠于塞尔镇的东南角。在不到10年的时间里,莱法吉这个名字在矿物采集者当中几乎成了精美的磷氯铅矿的同义词,因为该矿山的磷氯铅矿标本丰富多彩而品质优良。历史在莱法吉地区进行的最早的... 详细信息

莱法吉矿山在法国科雷兹省,距巴黎约400公里,紧靠于塞尔镇的东南角。在不到10年的时间里,莱法吉这个名字在矿物采集者当中几乎成了精美的磷氯铅矿的同义词,因为该矿山的磷氯铅矿标本丰富多彩而品质优良。历史在莱法吉地区进行的最早的开发工作,其时间可追溯到公元1—5世纪,但工程有限。1956年前后,法国地矿调查局开始勘探该矿床,到1962年才开始钻探工作。经过4年勘探和地质测量,终于查明该矿床具