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Journal of Minerals and materials Characterization and Engineering 2023年第6期11卷 249-259页

作者： Kondia Honoré Ouoba Abdou-Salam Ganame désiré Bama Abdoul Salam Ibrango Salifou Ouedraogo Laboratoire de matériaux de l’Héliophysique et Environnement (La.M.H.E.) Unité de Formation et de Recherche en Sciences Exactes et Appliquées (UFR/SEA) Université Nazi BONI Bobo Dioulasso Burkina Faso

The physical transformations in terms of contraction of okra dimensions during convective drying were examined. during drying, the lateral and longitudinal dimensions of okra decrease over time. The lateral dimensions go from their initial value to around 53%, 65% and 66% of this value after 530 min. The length of the two samples used goes from 8.65 and 9.02 cm to 6.79 and 7.52 cm after 14,300 min, i.e. a variation of 78.50% and 83.37%. All the two directions give variations almost linear depending on the water content. These linear contractions result in a volume contraction of the okra. It considerably decreases in volume during the drying process. The volume goes from 831.32 cm3 to 367.57 cm3 in min, a variation of 44.22%. The isotropic index reveals that okra does not behave the same in the lateral and longitudinal directions. It contracts its diameter more than its length.

关键词： Physical Transformations Contraction Isotropicity Okra

The Giant Radio Array for Neutrino detection(GRANd):Science and design

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Science China(Physics,Mechanics & Astronomy) 2020年第1期Mechanics & Astronomy) .卷 5-47页

作者： Jaime álvarez-Mu?iz Rafael Alves Batista Aswathi Balagopal V. Julien Bolmont Mauricio Bustamante Washington Carvalho Jr. didier Charrier Isma?l Cognard Valentin decoene Peter B.denton Sijbrand de Jong Krijn d.de Vries Ralph Engel Ke Fang Chad Finley Stefano Gabici Quan Bu Gou Jun Hua Gu Claire Guépin Hong Bo Hu Yan Huang Kumiko Kotera Sandra Le Coz Jean-Philippe Lenain Guo Liang Léü Olivier Martineau-Huynh Miguel Mostafá Fabrice Mottez Kohta Murase Valentin Niess Foteini Oikonomou Tanguy Pierog Xiang Li Qian Bo Qin duan Ran Nicolas Renault-Tinacci Markus Roth Frank G.Schr ?der Fabian Schüssler Cyril Tasse Charles Timmerman matías Tueros Xiang Ping Wu Philippe Zarka Andreas Zech B.Theodore Zhang Jian Li Zhang Yi Zhang Qian Zheng Anne Zilles departamento de Física de Partículas & Instituto Galego de Física de Altas Enerxías Universidad de Santiago de Compostela Instituto de Astronomia Geofísica e Ciências Atmosféricas Universidade de S?o Paulo department of Physics—Astrophysics University of Oxford DWB Institute of Experimental Particle Physics (ETP) Karlsruhe Institute of Technology (KIT) Laboratoire de Physique Nucléeaire et de Hautes Energies (LPNHE) Sorbonne Université Université Paris Diderot Sorbonne Paris Cité Niels Bohr International Academy and dARK Niels Bohr Institute discovery Center Niels Bohr Institute Center for Cosmology and Astro Particle Physics (CCAPP) & department of Physics Ohio State University Universidade de Santiago de Compostela SUBATECH Institut Mines-Telecom Atlantique – CNRS/IN2P3 – Université de Nantes Laboratoire de Physique et Chimie de l’Environnement et de l’Espace LPC2E CNRS-Université d’Orléans Station de Radioastronomie de Nan?cay Observatoire de Paris Sorbonne Université UMR 7095 Institut d’Astrophysique de Paris Institute for mathematics Astrophysics and Particle Physics (IMAPP) Radboud Universiteit Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF) IIHE/ELEM Vrije Universiteit Brussel Institute for Nuclear Physics (IKP) Karlsruhe Institute of Technology (KIT) Einstein Fellow Stanford University department of Astronomy University of Maryland Joint Space-Science Institute Oskar Klein Centre Stockholm University department of Physics Stockholm University Astro Particule et Cosmologie (APC) Université Paris Diderot CNRS/IN2P3 CEA/Irfu Observatoire de Paris Institute of High Energy Physics Chinese Academy of Sciences National Astronomical Observatories Chinese Academy of Sciences School of Physical Science and Technology Xinjiang University Center for Particle and Gravitational Astrophysics Pennsylvania State University department of Physics Pennsylvania State University department of Astronomy & Astrophysics Pennsylvania State University LUTH Observatoire de Paris

The Giant Radio Array for Neutrino detection（GRANd） is a planned large-scale observatory of ultra-high-energy（UHE） cosmic particles, with energies exceeding 10～8 Ge V. Its goal is to solve the long-standing mystery of the origin of UHE cosmic rays. To do this, GRANd will detect an unprecedented number of UHE cosmic rays and search for the undiscovered UHE neutrinos and gamma rays associated to them with unmatched sensitivity. GRANd will use large arrays of antennas to detect the radio emission coming from extensive air showers initiated by UHE particles in the atmosphere. Its design is modular: 20 separate, independent sub-arrays, each of 10000 radio antennas deployed over 10000 km2. A staged construction plan will validate key detection techniques while achieving important science goals early. Here we present the science goals, detection strategy, preliminary design, performance goals, and construction plans for GRANd.

关键词： radio telescopes neutrinos in astronomical observations cosmic rays in astronomical observations radiowave radiation: sources galactic and extragalactic cosmic rays

A Survey on Fault diagnosis and Fault Tolerant Methodologies for Permanent Magnet Synchronous Machines

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International Journal of Automation and computing 2020年第6期17卷 763-787页

作者： Erphan A.Bhuiyan Md.Maeenul Azad Akhand Sajal K.das Md.F.Ali Z.Tasneem Md.R.Islam d.K.Saha Faisal R.Badal Md.H.Ahamed S.I.Moyeen department of Mechatronics Engineering Rajshahi University of Engineering and TechnologyRajshahi 6204Bangladesh

This paper presents a comprehensive survey of fault diagnosis and fault tolerant approaches for permanent magnet synchronous machines(PMSM).PMSMs are prominent in the pervading usage of electric motors,for their high efficiency,great robustness,reliability and low torque *** spite of their extensive appliance,they can be quite non-resilient and inadequate in operation when faults appear in motor drive apparatus such as inverters,stator windings,sensors,*** may lead to insulation failure,torque fluctuations,overcurrent or even system *** that account,fault diagnosis and fault tolerant methods are equipped to enhance the stability and robustness in *** methodologies of PMSM fault diagnosis and tolerance are classified,discussed,reviewed and compared in this paper,beginning with mat hematical modeling of PMSM and then scrutinizing various fault conditions in ***,the scope of research on the topic is *** contribution of this review is to emphasize optimistic schemes and to assist researchers with the latest trends in this field for future directions.

关键词： Permanent magnet synchronous machine(PMSM) fault diagnosis fault tolerant control system(FTCS) fault detection stability.

Validation of a Characteristics dimensions for Transfers during Convective drying of Sweet Potato Cubic, Cylindrical and Spherical Shapes

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Open Journal of Applied Sciences 2023年第10期13卷 1714-1722页

作者： Ouoba Kondia Honore Ganame Abdou-Salam Ibrango Abdoul Salam Bama désiré Zougmore François Laboratoire de matériaux de l’Héliophysique et Environnement (La.M.H.E.) Unité de Formation et de Recherche en Sciences Exactes et Appliquées (UFR/SEA) Université Nazi BONI de Bobo-Dioulasso Bobo-Dioulasso Burkina Faso Laboratoire des matériaux et Environnement (LA.M.E.) Unité de Formation et de Recherche en Sciences Exactes et Appliquée (UFR/SEA) Université de Ouaga I Pr KI-ZERBO Ouagadougou Burkina Faso

This present work solves the problem of initial shape influence on transfer during convective drying. A characteristic dimension is found for the cubic, cylindrical and spherical-shaped samples of the sweet potato. This characteristic dimension corresponds to the diameter d for the sphere, to the edge a for the cube and the diameter = height d = H for the cylinder. Unlike the sphere where this characteristic dimension is perfect, the cubic and cylindrical shapes have space factors which are, among other things, angles and borders. By fixing the same characteristic dimensions, we end up with overlapping curves, showing identical and uniform transfers.

关键词： drying Initial Size Characteristic dimension Forms

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超细粉煤灰高强喷射混凝土试验优化设计

沈阳建筑工程学院学报 1998年第2期14卷 175-178页

作者：唐明佟钰邱晴陶延江沈阳建筑工程学院材料科学与工程系

用均匀设计方法对掺超细粉煤灰配制高强喷射混凝土进行研究，探索水灰比、灰砂比、粉煤灰细度三个因素对１ｄ，３ｄ，７ｄ，２８ｄ强度四个考核指标的影响规律，优化组合后，配制成早期和后期强度都很高的粉煤灰高强喷射混凝土．

关键词：混凝土强度水灰比粉煤灰喷射混凝土

CERAMIC matRIX COMPOSITE SYNTHESIZEd BY THE PURE Al+NaOH SELF-OXIdATION

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Acta Metallurgica Sinica(English Letters) 2001年第4期14卷 296-302页

作者： S.X. He1), S. Yuan2), J. Wang1) and B.d. Sun1) 1) department of Marterials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, China 2) department of Marterials Science and Engineerin dept. of mat. Sci. Shanghai Jiaotong Univ. Shanghai 200030 China

An Al2O3 ceramic matrix composite was fabricated by self-oxidation of pure Al+NaOH, and its microstructure, mechanical properties and growth mechanism were analyzed. Experimental results show that the composite possesses better mechanical properties, higher density and faster growth velocity than that made of Al-Mg-Si alloy. The composite grows primarily along the crucible wall and its microstructure is characterized by a periodic wavy like structure.

关键词： Aluminum Caustic soda Oxidation Synthesis (chemical)

Toward Rational Composite Electrodes for Improved Li Batteries

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复旦学报（自然科学版） 2007年第5期46卷 686-页

作者： B.Lestriez E.Ligneel d.Guyomard Institut des matériaux Jean Rouxel CNRS UMR 6502Université de Nantes

1 Results Although electrodes for lithium batteries are generally prepared with standard formulations and routine processing conditions,more and more studies report relationships between processing conditions,composite electrode morphology and electrochemical *** our previous work,we obtained a 50% increase of the cycling capacity of Li1.1V3O8 based electrodes after using a PEO binder which had been pre-plasticized by the solvent (ethylene carbonate (EC) + propylene carbonate (PC)) of the liq...

关键词： lithium battery composite material electrode processing

用微卫星(MS)标记分析稻瘟病菌的有性生殖和遗传多样性

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中国农业科学 2004年第2期37卷 215-221页

作者：沈瑛 C.KAYE J.FROUN 邓一文 d.THARREAU 中国水稻研究所法国国际农艺研究和发展中心法国国际农艺研究和发展中心中国水稻研究所法国国际农艺研究和发展中心杭州310006 法国国际农艺研究和发展中心蒙贝利埃34398 蒙贝利埃34398 蒙贝利埃34398 杭州310006 蒙贝利埃34398

用2对稻瘟病菌的两性能育菌株(交配型1.1和交配型1.2)测定中国9省、市89个稻瘟病菌株及由法国国际农艺研究和发展中心(CIRAd)提供作对照的巴西(BR)、喀麦隆(CM)、马达加斯加(Md)、马里(ML)、菲律宾(PH)、泰国(TH) 6国7个菌株的交配型。... 详细信息

用2对稻瘟病菌的两性能育菌株(交配型1.1和交配型1.2)测定中国9省、市89个稻瘟病菌株及由法国国际农艺研究和发展中心(CIRAd)提供作对照的巴西(BR)、喀麦隆(CM)、马达加斯加(Md)、马里(ML)、菲律宾(PH)、泰国(TH) 6国7个菌株的交配型。用微卫星分子标记分析了这些菌株的遗传多样性及其亲缘关系,并对其在稻瘟病菌的群体遗传的应用前景进行了讨论。

关键词：稻瘟病菌两性菌株微卫星标记交配型亲缘关系

dIELECTRIC ANd PIEZOELECTRIC PROPERTIES OF LEAd-FREE(Bi_(0.5)Na_(0.5))_(0.94)Ba_(0.06)TiO_(3)+x%Ce_(2)O_(3)+y%La_(2)O_(3)+z%Y_(2)O_(3) COMPOUNdS SYNTHESIZEd BY SOL-GEL TECHNIQUE

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Journal of Advanced dielectrics 2012年第4期2卷 62-69页

作者： A.CHAOUCHI M.SAIdI S.d'ASTORG M.RGUITI C.COURTOIS Laboratoire de Chimie Appliquée et Génie Chimique de l'Université Mouloud Mammeri de Tizi-Ouzou Algérie Laboratoire des matériaux Céramiques et Procédés Associés-Université de Valenciennes et du Hainaut-Cambrésis Z.I.du Champ de l'Abbesse 59600 MaubeugeFrance Univ.Lille Nord de France F-59000 LilleFrance

(Bi_(0.5)Na_(0.5))_(0.94)Ba_(0.06)TiO_(3)+x%Ce_(2)O_(3)+y%La_(2)O_(3)+z%Y_(2)O_(3) compounds(named BNT-BT-x/y/z)were synthesized by a sol-gel technique,for (x,y,z)=(0,0,0),(0.25,0.25,0.25),(0.25,0.5,0.5),(0.5,0.25,0.25)and(0.5,0.5,0.25).The structural variation according to the different system compositions is investigated by X-ray diffraction *** results shows that the addition of Ce_(2)O_(3),La_(2)O_(3) or Y_(2)O_(3) in BNT-BT system,do not modify the crystalline structure,and a rhombohedral-tetragonal morphotropic phase boundary is maintained for different dopant *** BNT-BT-x/y/z-based ceramics sintered at relatively low temperature(1100℃)exhibit a good densification *** optimum dielectric and piezoelectric properties are obtained with the BNT-BT-0.5/0.25/0.25 *** dielectric properties at room temperature(ε_(r)>1000)and low dielectric losses(tanδd for this *** compound exhibits a piezoelectric constant d_(33) of 95 pC/N,a good polarization behavior is observed with high remanent polarization P_(r) of 9.21μC/cm^(2) and low value coercitivefield E_(c) of 2.66 kV/mm.

关键词： (Bi_(0.5)Na_(0.5))_(0.94)Ba_(0.06)TiO_(3) lead-free ceramics sol-gel dielectric properties piezoelectricity

Two-dimensional Simulation of the Navier-Stokes Equations for Laminar and Turbulent Flow around a Heated Square Cylinder with Forced Convection

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Applied mathematics 2018年第3期9卷 291-312页

作者： Romulo d.C.Santos Sílvio M.A.Gama Ramiro G.R.Camacho department of mathematics and CMUP Faculty of ScienceUniversity of PortoPortoPortugal Institute of Mechanical Engineering Federal of University of ItajubáItajubáMinas GeraisBrazil

Few studies jointly investigate thermal and turbulent effects. In general, these subjects are treated separately. The purpose of this paper is to use the Immersed Boundary Method (IBM) coupled with the Virtual Physical Model (VPM) to investigate incompressible two-dimensional Newtonian flow around a heated square cylinder at constant temperature on its surface with forced convection and turbulence. The VPM model dynamically evaluates the force that the fluid exerts on the immersed surface and the thermal exchange between both in the Reynolds numbers (Re) window 40 ≤ Re ≤ 5×103 . For simulations of turbulence the Smagorinsky and Spalart-Allmaras models are used. The first model uses the Large Eddy Simulation (LES) methodology and is based on the local equilibrium hypothesis for small scales associated with the Boussinesq hypothesis, such that the energy injected into the spectrum of the turbulence balances the energy dissipated by convective effects. The second model uses the concept Unsteady Reynolds Averaged Navier-Stokes Equations (URANS), with only one transport equation for turbulent viscosity, being calibrated in pressure gradient layers. The goal of this work is to analyse the combination of the heat-transfer phenomena with the turbulence for the thermo-fluid-structure interaction in a square cylinder. For this, it was developed a C/C++ code that requires low computational costs in regards to memory and computer facilities. It is observed that, with the increase of the Reynolds number, an increase of the drag coefficient occurs, as well as reinforces the influence of the pressure distribution downstream of the cylinder, which is strongly influenced by the formation and detachment of vortices on the upper and lower sides of the square cylinder.

关键词： Immersed Boundary Method Virtual Physical Model Heated Square Cylinder Forced Convection Turbulence Models