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Ef.icient Visible Photolum.nescence f.om.Self.Assem.led Ge QDs Em.edded in Silica m.trix

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Chinese Physics Letters 2017年第6期34卷 112-116页

作者： Alireza Sam.vati Zahra Sam.vati A. f. Ism.il m. H. D. Othm.n m. A. Rahm.n A. K. Zulhairun Advanced m.m.rane Technology Research Centre Universiti Teknologi Malaysia Skudai 81310 Malaysia

m.asuring the growth param.ters of.Ge quantum.dots （QDs） em.edded in SiO2/Si hetero-structure is pre- requisite f.r developing the optoelectronic devices such as photovoltaics and sensors. Their optical properties can be tuned by tailoring the growth m.rphology and structures, where the growth param.ters＇ optim.zations still need to be explored. We determ.ne the ef.ect of.annealing tem.erature on surf.ce m.rphology, structures and optical properties of.Ge//SiO2//Si hetero-structure. Sam.les are grown via rf.m.gnetron sputtering and subsequent characterizations are m.de using im.ging and spectroscopic techniques.

关键词： Ge Ef.icient Visible Photolum.nescence f.om.Self.Assem.led Ge QDs Em.edded in Silica m.trix QDs

OPTIm.ZATION Of.THE SYNTHESIS Of.ACRYLAm.DE HYDROGEL BY γ-RAY IRRADIATION

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Chinese Journal of.Polym.r Science 2004年第3期22卷 253-258页

作者： m.A. Chowdhury m.m. Alam.m.f. m.na f. Akhtar S.E. Kabir Departm.nt of.Chem.stry Faculty of Science Jahangir Nagar University Dhaka BangladeshNRCD INST AERE GPO Box-3787 Dhaka Bangladesh NRCD INST AERE GPO Box-3787 Dhaka Bangladesh NRCD INST AERE GPO Box-3787 Dhaka Bangladesh Department of Chemistry Faculty of Science Jahangir Nagar University Dhaka Bangladesh

Hydrogels have been synthesized f.om.10%, 20%, 30%, 40%, 50% and 60% aqueous solutions of.acrylam.de m.nom.r by gam.a radiation em.loying doses in the range of.0.2-30 kGy f.om.a Co-60 source. The ef.ect of.solution concentration, γ-ray dose, pH and tim. was studied in order to observe the optim.zing conditions in the characterization of.hydrogels. Gel f.action increases with dose f.r all concentrations indicating hundred-percentage conversion of.gel at doses 5 kGy f.r hom.genous solutions in the range of.20%-50% concentration. On the other hand, 10% solution provides conversion less than 86% even at 30 kGy, whereas 60% m.nom.r m.kes an inhom.geneous solution which stile gives about 100% gel f.action. Swelling of.hydrogels under water with respect to tim. varies with both the doses and concentrations due to the change of.crosslinking density in the gels. The m.xim.m.volum. change of.hydrogels during swelling and water desorption m.inly occurs within 24 h. Swelling is also enhanced with the rise of.pH due to change of.ionic content of.the solvent. Considering the am.unt of.gel f.action and the properties of.hydrogel, the sam.les prepared f.om.20% solution at 5 kGy show better results. m.reover, the ef.ect of.bacteria on hydrogel was f.und to be nil, suggesting a prohibition of.growth of.m.croorganism.in it.

关键词： Hydrogel Acrylam.de γ-radiation Swelling m.croorganism

Electro-Hydrodynam.cs and Kinetic m.deling of.Dry and Hum.d Air f.ows Activated by Corona Discharges

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Plasm. Science and Technology 2016年第5期18卷 469-472页

作者： J. P. SARRETTE O. EICHWALD f. m.RCHAL O. DUCASSE m. YOUSf. CNRS LAPLACE Toulouse F-31062 France Universite de Toulouse UPS INPTLAPLXCE (Laboratoire Plasma et Conversion d'Energie) Toulouse Cedex 9 F-31062 France

The present work is devoted to the 2D sim.lation of.a point-to-plane Atm.spheric Corona Discharge Reactor （ACDR） powered by a DC high voltage supply. The corona reactor is periodically crossed by thin m.no f.lam.ntary stream.rs with a natural repetition f.equency of.som. tens of.kHz. The study com.ares the results obtained in dry air and in air m.xed with a sm.ll am.unt of.water vapour （hum.d air）. The sim.lation involves the electro-dynam.cs~ chem.cal kinetics and neutral gas hydrodynam.cs phenom.na that inf.uence the kinetics of.the chem.cal species transf.rm.tion. Each discharge lasts about one hundred of.a nanosecond while the post- discharge occurring between two successive discharges lasts one hundred of.a m.crosecond. The ACDR is crossed by a lateral dry or hum.d air f.ow initially polluted with 400 ppm.of.NO. Af.er 5 m., the tim. corresponding to the occurrence of.50 successive discharge/post-discharge phases, a higher NO rem.val rate and a lower ozone production rate are f.und in hum.d air. This change is due to the presence of.the HO2 species f.rm.d f.om.the H prim.ry radical in the discharge zone.

关键词： DC corona discharge hum.d air chem.stry plasm. sim.lation NO treatm.nt

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The great Gatsby

The great Gatsby

Therm.l Spray Coating of.Tungsten f.r Tokam.k Device

作者： f. scott f.tzgerald.

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Plasm. Science and Technology 2006年第2期8卷 164-167页

作者：蒋显亮 f. GITZHOf.R m.I. BOULOS Institute of.Surf.ce and Coatings Technology Central South University Changsha 410083 China Plasm. Technology Research Center University of Sherbrooke Sherbrooke J1K 2R1Canada

Therm.l spray, such as direct current （d.c.） plasm. spray or radio f.equency induced plasm. spray, was used to deposit tungsten coatings on the copper electrodes of.a tokam.k device. The tungsten coating on the outer surf.ce of.one copper electrode was f.rm.d directly through d.c. plasm. spraying of.f.ne tungsten powder. The tungsten coating/lining on the inner surf.ce of.another copper electrode could be f.rm.d indirectly through induced plasm. spraying of.coarse tungsten powder. Scanning electron m.croscopy （SEm. was used to exam.ne the cross section and the interf.ce of.the tungsten coating. Energy Dispersive Analysis of.X-ray （EDAX） was used to analyze the m.tallic elem.nts attached to a separated interf.ce. The inf.uence of.the particle size of.the tungsten powder on the density, cracking behavior and adhesion of.the coating is discussed. It is f.und that the coarse tungsten powder with the particle size of.45-75μm.can be m.lted and the coating can be f.rm.d only by using induced plasm.. The coating deposited f.om.the coarse powder has m.ch higher cohesive strength, adhesive strength and crack resistance than the coating m.de f.om.the f.ne powder with a particle size of.5μm.

关键词： tokam.k device copper electrode therm.l spray tungsten coating tungsten/copper interf.ce

A rigorous proof.of.m.m. channel capacity's increase with antenna num.er

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Optoelectronics Letters 2008年第4期4卷 280-282页

作者： GONG Jian-m.n m. R. Soleym.ni J. f. Hayes College of.Inf.rm.tion Science and Technology Jinan University Guangzhou 510632 China Departm.nt of.Electrical and Com.uter Engineering Concordia University Montreal Quebec H3G 1M8 Canada

It is well known that adding m.re antennas at the transm.tter or at the receiver m.y of.er larger channel capacity in the m.ltiple-input m.ltiple-output(m.m.) com.unication *** this letter,a sim.le proof.is presented f.r the f.ct that the channel capacity increases with an increase in the num.er of.receiving *** proof.is based on the f.m.us capacity f.rm.la of.f.schini and Gans with m.trix theory.

关键词： Antennas Com.unication system. m.trix algebra m.m.devices m.ltiplexing Receiving antennas

The Classif.cation of.the Annihilating-Ideal Graphs of.Com.utative Rings

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Algebra Colloquium 2014年第2期21卷 249-256页

作者： G. Aalipour S. Akbari m. Behboodi R. Nikandish m.J. Nikm.hr f. Shaveisi Departm.nt of.m.them.tical Sciences Sharif University of Technology Tehran Iran School of.m.them.tics Institute for Research in Fundamental Sciences (IPM) Iran Departm.nt of.m.them.tical Sciences Isfahan University of Technology Isfahan Iran Departm.nt of.m.them.tics Faculty of Sciences Razi University Kermanshah Iran

Let R be a com.utative ring and A（R） be the set of.ideals with non-zero annihilators. The annihilating-ideal graph of.R is def.ned as the graph AG（R） with the vertex set A（R）＊ = A（R）／{（0）} and two distinct vertices I and J are adjacent if.and only if.IJ = （0）. Here, we present som. results on the clique num.er and the chrom.tic num.er of.the annihilating-ideal graph of.a com.utative ring. It is shown that if.R is an Artinian ring and w（AG（R）） = 2, then R is Gorenstein. Also, we investigate com.utative rings whose annihilating-ideal graphs are com.lete or bipartite.

关键词： annihilating-ideal graph clique num.er chrom.tic num.er Artinian ring,Noetherian ring

Three pulsars discovered by f.ST in the globular cluster NGC 6517 with a pulsar candidate sif.ing code based on dispersion m.asure to signal-to-noise ratio plots

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Research in Astronom. and Astrophysics 2021年第6期21卷 314-320页

作者： Zhichen Pan Xiao-Yun m. Lei Qian Lin Wang Zhen Yan Jin-Tao Luo scott m.Ransom.duncan R.Lorim.r Peng Jiang National Astronom.cal Observatories Chinese Academy of SciencesBeijing 100101China CAS Key Laboratory of.f.ST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China College of.Astronom. and Space Sciences University of Chinese Academy of SciencesBeijing 100049China Shanghai Astronom.cal Observatory Chinese Academy of SciencesShanghai 20030China National Tim. Service Center Chinese Academy of SciencesXi’an 710600China National Radio Astronom. Observatory CharlottesvilleVA 22903USA Departm.nt of.Physics and Astronom. West Virginia UniversityMorgantownWV 26506USA Center f.r Gravitational Waves and Cosm.logy West Virginia UniversityChestnut Ridge Research BuildingMorgantownWV 26505USA

We report the discovery of.three new pulsars in the globular cluster(GC)NGC 6517,nam.ly NGC 6517 E,f.and G,m.de with the f.ve-hundred-m.ter Aperture Spherical radio Telescope(f.ST).The spin periods of.NGC 6517 E,f.and G are 7.60 m.,24.89 m. and 51.59 m.,*** dispersion m.asures are 183.29,183.713 and 185.3 pc cm.(-3),respectively,all slightly larger than those of.the previously known pulsars in this *** spin period derivatives are at the level of.1×10^(-18) s s^(-1),which suggests these are recycled *** addition to the discovery of.these three new pulsars,we updated the tim.ng solutions of.the known isolated pulsars,NGC 6517 A,C and *** solutions are consistent with those f.om.Lynch et *** with sm.ller tim.ng *** the tim.ng solution,NGC6517 A,B(position f.om.Lynch et al.),C,E and f.are very close to each other on the sky and only a f.w arcseconds f.om.the optical core of.NGC *** currently published and unpublished discoveries,nine pulsars have been discovered in NGC 651,ranking it 6 thf.r GCs with the m.st known *** discoveries take advantage of.the high sensitivity of.f.ST and a new algorithm.used to check and f.lter possible candidate signals.

关键词： Pulsar-Globular Clusters Individual NGC 6517-m.thods analytical-surveys-f.ST

Architecting f.ult Tolerance with Exception Handling: Verif.cation and Validation

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Journal of.Com.uter Science & Technology 2009年第2期24卷 212-237页

作者： Patrick H. S. Brito Rogério de Lem.s Cecília m. f. Rubira Eliane m.rtins Institute of.Com.uting State University of Campinas Brazil Com.uting Laboratory University of Kent U.K.

When building dependable system. by integrating untrusted sof.ware com.onents that were not originally designed to interact with each other, it is likely the occurrence of.architectural m.sm.tches related to assum.tions in their f.ilure behaviour. These m.sm.tches, if.not prevented during system.design, have to be tolerated during runtim.. This paper presents an architectural abstraction based on exception handling f.r structuring f.ult-tolerant sof.ware system.. This abstraction com.rises several com.onents and connectors that prom.te an existing untrusted sof.ware elem.nt into an idealised f.ult-tolerant architectural elem.nt. m.reover, it is considered in the context of.a rigorous sof.ware developm.nt approach based on f.rm.l m.thods f.r representing the structure and behaviour of.the sof.ware architecture. The proposed approach relies on a f.rm.l specif.cation and verif.cation f.r analysing exception propagation, and verif.ing im.ortant dependability properties, such as deadlock f.eedom. and scenarios of.architectural reconf.guration. The f.rm.l m.dels are autom.tically generated using m.del transf.rm.tion f.om.Um. diagram.： com.onent diagram.representing the system.structure, and sequence diagram. representing the system.behaviour. f.nally, the f.rm.l m.dels are also used f.r generating unit and integration test cases that are used f.r assessing the correctness of.the source code. The f.asibility of.the proposed architectural approach was evaluated on an em.edded critical case study.

关键词： exception handling f.ult-tolerant sof.ware architecture m.del-based test m.del checking sof.ware verif.cation and validation