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Journal of Chemistry and Chemical Engineering 2011年第2期5卷 177-181页

作者： Karima Bendahou Saidi Fatiha Hamidi Leila Cherif Aouali Stephane Siffert Abdelkader Bengueddach Aissa Aissat Fabrice Cazier Antoine Aboukais laboratoire de catalyse et synthese en ehimie organique PB 119 Universite de Tlemcen Algerie Univ Lille Nord de France F-59000 Lille France ULCO LCE F-59140 Dunkerque France laboratoire de ehimie des materiaux Universite d ＇Oran Algerie ULCO CCM F-59140 Dunkerque France

Chromium-incorporated mesoporous silica materials （MCrS） have been successfully prepared in strong acidic media by assembly of preformed CrSI precursors with triblock copolymer of the Pluronic type （P123） by a two steps procedure. Various techniques including XRD, N2 adsorption, FT-IR spectroscopy, diffuse reflectance UV-vis （DRUV-vis） and EPR were employed for the materials characterization. MCrS materials have a hexagonal structure with uniform mesopores and contain Cr（V） and Cr（VI） under low and high Cr content and that the mesoporous walls contain the MFI structure building units.

关键词： Zeolite precursors CrS-1 mesoporous SBA-15

Catalytic Performance of Nanoscale-Corrugated Gold and Silver Films for Surface-Enhanced Chemiluminescence

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Catalytic Performance of Nanoscale-Corrugated Gold and Silve...

Vasarely painting at the nanoscale on sapphire crystals

作者：欧梅贵吕国伟 Armel descamps Christophe Andre Marquette Loc Jacques Blum Gilles Ledoux Stephane Roux Olivier Tillement Pascal Perriat Groupe d'Etude de Metallurgie Physique et de Physique des materiaux INSA de Lyon 69621 Villeurbanne Cedex(France) Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100080(P.R.China) laboratoire de Genie Enzymatique et Biomole culaire Universite Claude Bernard Lyon I 69622 Villeurbanne Cedex(France) laboratoire de Physico-Chimie des materiaux Luminescents Universite Claude Bernard Lyon I 69622 Villeurbanne Cedex(France)

Biochips of corrugated gold and silver displaying surface plasmon resonance at different energies are fabricated to determine the nature of the mechanism responsible for the surface-enhanced chemiluminescence (SECL) of *** Full Paper proves that,whereas silver possesses the strongest resonance and the greatest plasmon overlap with luminol emission,silver is also the metal that induces the lowest CL enhancement(two orders of magnitude less than gold).Therefore,the enhancement mechanism is not related to plasmon-assisted processes but rather originates from catalytic properties induced by corrugation of the metal film.

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Nano Research 2020年第9期13卷 2512-2516页

作者： Caroline Matringe Elsa Thune Rémy Cavalotti Ahmad Fakih Stephan Amaud Nils Blanc Nathalie Boudet Alessandro Coati Yves Garreau David Babonneau René Guinebretière IRCER UMR CNRS 7315Centre Europeen de la CeramiqueUniversite de Limoges12 rue Atlantis87068 LimogesFrance Institut Neel UPR CNRS 2940 CRG D2AM BeamlineESRFUniversite Grenoble Alpes38042 GrenobleFrance SixS Beamline Synchrotron SOLEILBP4891192 Gifsur YvetteFrance laboratoire materiaux et Phenomenes Quantiques UMR CNRS 7162Universite de Paris75013 ParisFrance Institut Pprime Departement Physique et Mecanique des Materiauxf UPR CNRS 3346Universite de PoitiersSP2MITSA 4112386073 Poitiers Cedex 9France

We demonstrate that convenient thermal treatment of a specific sapphire vicinal surface can induce the formation of a fully two-dimensional(2D)ordered surface made of a periodic assembly of(006)*** simiarity between the resuting surface topography and pattemns represented in the hexagon series"of paintings by Vasarely is really striking!We thus propose to call these surfaces as"nanoscaled Vasarely surfaces".We also show that the self-organization process,which is driven by the minimization of the free energy of a closed system,results in a quasi-linear isothermal growth of the facets'surface area over time.

关键词： nanoscaled Vasarely surfaces two-dimensional(2D)-self-organization sapphire vicinal surfaces

Crystallization Kinetics of α-Alumina and Mullite-Zirconia in Boehmite and Zircon Mixture

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材料科学与工程（中英文A版） 2013年第12期3卷 814-819页

作者： Hocine Belhouchet Mohamed Hamidouche Noureddine Bouaouadja Vincent Gamier Gilbert Fantozzi Physics Department de Faculty of Science University of M'sila M'sila 28000 Algeria laboratoire des materiaux Non Metalliques I. O. M. P Universitd Ferhat Abbas Setif l 9000 Algerie Unite de recherche materiaux Emergents Universite Ferhat Abbas Setif l 9000 Algerie Universite de Lyon INSA-Lyon MA TEIS CNRS-UMR 5510 Villeurbanne 69621 France

foF2 Diurnal Variability at African Equatorial Stations:Dip Equator Secular Displacement Effect

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International Journal of Geosciences 2013年第8期4卷 1145-1150页

作者： Doua A.Gnabahou Frederic Ouattara Emmanuel Nanema Francois Zougmore laboratoire d’Enseignement et de Recherche en Sciences Experimentales et Mathematiques Ecole Normale Superieure de l’Universite de KoudougouKoudougouBurkina Faso laboratoire des materiaux et Environnement Universite de OuagadougouOuagadougouBurkina Faso Institut de Recherches en Sciences Appliquées et Technologies/Centre National de la Recherche Scientifique et Technologique OuagadougouBurkina Faso

The paper goal is to analyze the variability of foF2 at African equatorial stations and the effect of dip angle on this variability. The gap between the dip angle of Dakar and Ouagadougou is superior to that between Djibouti and Ouagadougou. The trend of the dip angle at Ouagadougou and Dakar decreases while that of Djibouti increases. The relative position of the station with respect to the equator and the trend sign explains the difference observed in foF2 variability at Dakar station and at the two other stations. At Djibouti and Ouagadougou, foF2 exhibits noon bite out profile during all solar cycle phases while at Dakar observed profile is dome or plateau during the maximum and the predominance afternoon peak for the other solar cycle phases.

关键词： Dip Angle foF2 Diurnal Variability Solar Cycle Phase

High Current Pulsed Electron Beam(LEHCPEB) Treatment:an Effective Way for Improving Surface Microstructure and Properties

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High Current Pulsed Electron Beam(LEHCPEB) Treatment:an Effe...

Numerical Simulation of Cu（In,Ga）Se2 Solar Cells Performances

2010年全国荷电粒子源、粒子束学术会议、中国电工技术学会第十三届全国电子束离子束学术年会暨电子束离子束专业委员会换届大会、中国电子学会焊接专业委员会第十届全国电子束焊接学术交流会、粒子加速器学会第十二届全国离子源学术交流会、中国机械工程学会焊接分会高能束及特种焊接2010年学术交流会、北京电机工程学会第十一届粒子加速器学术交流会

作者： T.Grosdidier laboratoire d'Etude des Textures et Applications aux materiaux(LETAM CNRS 3143 Universite Paul Verlaine-MetzIle du Saulcy Key Lab of Materials Modification by Laser Ion and Electron Beams & School of Materials Science and EngineeringDalian University of Technology

Low energy high current pulsed electron beam(LEHCPEB) is a fairly new technique for surface modifications,including hardening,alloying and formation of metastable phases as well as improvement in wear and corrosion *** present contribution gives some new insights on the microstructure modifications encountered at the top surface of HCPEB treated *** particular,the potential of the technique for structure modifications associated with the use of the pulsed electron beam under "heating" and"melting"conditions are highlighted.

关键词： Low energy high current pulsed electron beam(LEHCPEB) Melting and heating modes Craters Deformed structures Surface alloying Surface hardening.

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Journal of Energy and Power Engineering 2015年第12期9卷 1047-1055页

作者： Daouda Oubda Marcel Bawindsom Kebre Francois Zougmore Donatien Njomo Frederic Ouattara LA.M.E (laboratoire de materiaux et Environnement) UFR-SEA (Unite de Formation et de Recherche en Sciences Exactes et Appliquees) Universite de Ouagadougou Ouaga 03 BP 7021 Burkina Faso L.A.T.E.E (laboratoire d'Analyse des Technologies de l'Energie et de l'Environnement)-FAST (Faculte des Sciences et Techniques)-Sciences Universite Yaounde I Yaounde 812 Cameroun LA.R.E.M.E (laboratoire de Recherche en Energdtique et Meteorologie de l'Espace) ENS (Ecole Normale Superieure) Universite de Koudougou Koudougou BP 376 Burkina Faso

This paper presents a numerical characterization of copper-indium-gallium-diselenide thin film solar cells using one dimensional simulation program （SCAPS-1D）. We have performedan optimization of the performances of the standard Mo/Cu（In, Ga）Se2/CdS/ZnO solar cells using current-voltage and quantum efficiency methods. With a CuIn..7Ga0.3Se2 absorber, we have investigated the buffer layer thickness, temperature, series and shunt resistances effects on the open-circuit voltage, short-circuit current density, fill factor, conversion efficiency and quantum efficiency. The simulated results show good performances when the thickness of the buffer layer is in the range of 10-40 um due to the reduction of absorption in the short wavelenghts （380-500 nm）. High performances of the model is obtained when the series and shunt resistances is in the range of 0.1-1 Ω·cm^2 and 1,000 Ω·cm^2, respectively. Under these conditions, the cell can theoretically operate under an ambiant temperature of 370 K without any loss of its performances.

关键词： Numerical simulation SCAPS-1D CdS thickness temperature Rs Rsh

Biogeochemical Dynamics of Molybdenum in a Crater Lake:Seasonal Impact and Long-Term Removal

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Journal of Water Resource and Protection 2014年第4期6卷 256-271页

作者： Alassane Thiam Didier Jezequel Alexis Groleau Francois Prevot Filipa Lopes Patrick Alberic Catherine Quiblier Elivira Bura-Nakic Irena Ciglenecki Hassiba Lazar Eric Viollier Universite de Thies UFR Sciences de l’IngenieurThiesSenegal laboratoire de Geochimie des Eaux Universite Paris Diderot-Institut de Physique du Globe de ParisParisFrance laboratoires Genie des Procedes et materiaux Ecole de Chimie de ParisChatenay-MalabryFrance UMR611-CNRS/Universite d’Orleans OrleansFrance Museum National d’Histoire Naturelle Equipe“Systematique et Ecotoxicologie des Micro-Algues”ParisFrance Rudjer Boskovic Institute Center for Marine and Environmental ResearchZagrebCroatia

despite a large variety of processes that can control Mo and its potential to become an environmental tracer of euxinic environment, this element is not often studied in lakes. The aim of this paper is to identify main seasonal biogeochemical processes that involve Mo in a well constrained freshwater system (Lake Pavin water-column) in order to evaluate their respective importance. In Lake Pavin, 4 main processes have been identified: 1) the transitional process represented by Mo assimilation of by phytoplankton in the epilimnion (nitrogen biological fixation and nitrate assimilation);2) transient process represented by dissolved Mo adsorption onto Fe and Mn metal oxides at oxic/anoxic interface (depth 50 - 60 m);3) Mo precipitation where apparent sulfide production rate is maximum, and from 80 m depths;4) release of dissolved Mo due to Mo benthic flux or input from a deep source.

关键词： Molybdenum Biogeochemical Cycles Diatoms ICP-MS Meromictic Lake

Statistical Study of foF2 Diurnal Variation at Dakar Station from 1971 to 1996:Effect of Geomagnetic Classes of Activity on Seasonal Variation at Solar Minimum and Maximum

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International Journal of Geosciences 2015年第3期6卷 201-208页

作者： Ali Mahamat Nour Ouattara Frederic Zerbo Jean Louis Gyebre Aristide Marie Frederic Nanema Emmanuel Zougmore Francois laboratoire de materiaux et Environnement(LAME) UFR SEA Universite de OuagadougouOuagadougouBurkina Faso laboratoire de Recherche en Energetique et Meteorologie de l’Espace(LAREME) Universite de KoudougouKoudougouBurkina Faso Institut des Sciences Exactes et Appliquees(ISEA) Universite Polytechnique de Bobo DioulassoBobo DioulassoBurkina Faso Centre National de Recherches Scientifiques et Techniques(CNRST) Institut de Recherches Scientifiques Appliquees et Technologies(IRSAT)OuagadougouBurkina Faso

The statistical study of F2 layer critical frequency at Dakar station from 1971 to 1996 is carried out. This paper shows foF2 statistical diurnal for all geomagnetic activities and all seasons and that during solar maximum and minimum phases. It emerges that foF2 diurnal variation graphs at Dakar station exhibits the different types of foF2 profiles in African EIA regions. The type of profile depends on solar activity, season and solar phase. During solar minimum and under quiet time condition, data show?the signature of a strength electrojet that is coupled with intense counter electrojet in the afternoon. Under disturbed conditions,?mean intense electrojet is observed in winter?during fluctuating and recurrent activities. Intense counter electrojet is seen under fluctuating and shock activities in all seasons coupled with strength electrojet in autumn. In summer?and spring under all geomagnetic activity condition, there is intense counter electrojet. During solar maximum, in summer and spring there is no electrojet under geomagnetic activity conditions.?Winter shows a mean intense electrojet. Winter and autumn are marked by the signature of the reversal electric field.

关键词： foF2 Diurnal Variation Solar Cycle Phases Geomagnetic Activity Classes Seasonal Effects E Region Electric Currents

含裂纹的半无限大体模型在热冲击下的非傅里叶效应和惯性效应分析（英文）

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含裂纹的半无限大体模型在热冲击下的非傅里叶效应和惯性效应分析...