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Transactions of Nonferrous m.tals Society of China 2016年第2期26卷 456-463页

作者： Tae-hyuk.LEE m.on-soo sim Sin-hyeong JOO k.oung-tae PARk.Ha-guk.JEONG Jong-hyeon LEE Graduate School of Departm.nt of Advanced m.terials Engineering Chungnam National University Rapidly Solidified m.terials Research Center Chungnam National University Graduate School of Energy Science & Technology Chungnam National University Rare m.tal R&D Group Korea Institute of Industrial Technology Advanced Fusion Process R&D Group Korea Institute of Industrial Technology

The effect of interm.tallic com.ound （Im.） thick.ess on the therm.l and m.chanical properties of Al/Cu honeycom. rods w.s investigated. The Al/Cu honeycom. rods w.re fabricated using repeated hydrostatic extrusions at 200 ℃. During the process, an Im. layer w.th 1μm.in thick.ess w.s generated at the Al/Cu interface. Different Im. thick.esses w.re obtained by post-heat treatm.nt at 420 ℃ for 0.5 to 2 h. The Im. thick.ess increased to 10.1μm. The Im. layers w.re identified as Al2Cu （θ）, AlCu （η2）, and Al4Cu9（γ1） phases. The therm.l conductivities in the longitudinal direction and cross direction decreased by 11.9% （（268±4.8） to （236±4.4） w.（m.k.） and 10.4% （（210±3.2） to （188±2.8） w.（m.#183;k.）, respectively, w.th increasing Im. thick.ess. The ultim.te tensile strength and elongation of the Al/Cu honeycom. rod are （103±8.4） m.a and （73±6.2）%, respectively. The ultim.te tensile strength increased to （131±6.5） m.a until the Im. thick.ess reached 7.7μm. It subsequently decreased to （124±3.9） m.a until the Im. thick.ess reached 10.1μm. The elongation of the Al/Cu honeycom. rod then sharply decreased to （29±2.5）% w.th increasing Im. thick.ess.

关键词： interm.tallic com.ound Al/Cu honeycom. rod anisotropy therm.l conductivity tensile strength hydrostatic extrusion

simple C~*-Algebras w.th Unique Tracial States and Quantized Topological Spaces

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Acta m.them.tica Sinica,English Series 2002年第1期18卷 181-198页

作者： LIN Hua Xin Departm.nt of m.them.tics, East China Norm.l University. Shanghai 200062, P. R. China Departm.nt of m.them.tics. University of Oregon, eugene. Oregon 97403-1222 Departm.nt of m.them.tics East China Normal University Shanghai P. R. China Departm.nt of m.them.tics University of Oregon Eugene USA

Let X be a connected finite Cw.com.lex and d_x: k.O(C(X))→ Z be the dim.nsion function. w. show.that, if A is a unital separable simple nuclear C~*-algebra of TR(A)= 0 w.th the unique tracial state and satisfying the... 详细信息

关键词： Quantized defOrl11atio1l Silllp1e C*-a1gebras

Inhibition of Alum.nium.Corrosion Using <i>Carica papaya</i>Leaves Extract in Sulphuric Acid

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Journal of m.nerals and m.terials Characterization and Engineering 2018年第1期6卷 1-14页

作者： Baruk. k.suga eugene Park.Revocatus L. m.chunda Departm.nt of m.terials and Energy Science & Engineering Nelson Mandela African Institution of Science and Technology Arusha Tanzania Departm.nt of w.ter and Environm.ntal Science and Engineering Nelson Mandela African Institution of Science and Technol-ogy Arusha Tanzania

Inhibition of alum.nium.corrosion using C. papaya leaves extract in 1.0 m.H2SO4 w.s investigated by using gravim.tric analysis at various concentrations and tem.eratures: 303 k. 313 k.and 323 k. Characterization w.s done by using Scanning Electron m.croscope (SEm. and Fourier Transform.Infrared (FT-IR) spectroscopy. Results show.that, inhibiting ability of the extract w.s due to its adsorption onto the m.tal surface through Langm.ir adsorption isotherm. Therm.dynam.c (Gibbs energy, entropy and heats of adsorption) and k.netic param.ters (activation energy and entropy of activation) w.re also determ.ned. All of these agreed to physical adsorption of inhibitor onto the alum.nium.surface.

关键词： C. papaya Inhibition Alum.nium Sulphuric Acid Adsorption Therm.dynam.c and k.netic Param.ters

Facial Index Based 2D Facial Com.osite Process for Forensic Investigation in Sri Lank.

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Forensic m.dicine and Anatom. Research 2016年第1期4卷 7-16页

作者： P. B. Jayasek.ra L. Sivaneasharajah m. A. S. Perera J. Perera D. D. k.runaratne k. D. Sandaruw.n R. N. Rajapak.e University of Colom.o School of Com.uting Colombo Sri Lanka Departm.nt of Forensic m.dicine and Toxicology Faculty of Medicine University of Colombo Colombo Sri Lanka

The “facial com.osite” is one of the m.jor fields in the forensic science that helps the crim.nal investigators to carry out their investigation process. The survey conducted by United States law Enforcem.nt Agencies confirm. that 80% of the law enforcem.nt agencies use com.uter autom.ted com.osite system. w.ereas Sri Lank. is still far behind in the process of facial com.osite w.th lot of inefficiencies in the current m.nual process. Hence this research introduces a novel approach for the m.nual facial com.osite process, w.ile elim.nating the inefficiencies of the m.nual procedure in Sri Lank.. In order to overcom. this situation, this study introduces an autom.ted im.ge processing based softw.re solution w.th 2D facial feature tem.lates targeting the Sri Lank.n population. Thus, this w.s the first ever approach that creates the 2D facial feature tem.lates by incorporating both m.dically defined indexes and relevant aesthetic aspects. Hence, this research study is com.rised of tw. separate analyses on anthropom.tric indices and facial feature shapes w.ich w.re carried out targeting the local population. Subsequently, several evaluation techniques w.re utilized to evaluate this m.thodology w.ere w. obtained an overall success rate as 70.19%. The ultim.te goal of this research study is to provide a system.to the law enforcem.nt agencies in order to carry out an efficient and effective facial com.osite process w.ich can lead to increase the success rate of suspect identification.

关键词： Facial Com.osite Facial Index Facial Feature Tem.lates Sri Lank.

Calibrating Vegetation Cover and Grassland Pollen Assem.lages in the Flint Hills of k.nsas, USA

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Am.rican Journal of Plant Sciences 2013年第7期4卷 1-10页

作者： Julie L. Com.erford k.ndra k. m.Lauchlan Shinya Sugita Departm.nt of Geography Kansas State University Manhattan USA Departm.nt of Geography Kansas State University Manhattan USA Institute of Ecology Tallinn University Tallinn Estonia.

Grassland cover and com.osition respond to clim.te and have undoubtedly changed during the Holocene, but quantitative reconstructions from.fossil pollen have been vague about spatial scale and taxon-specific cover. Here, w. estim.te the relevant source area of pollen for sedim.ntary basins approxim.tely 50 m.in radius, and w. report pollen productivity estim.tes for 12 plant taxa in the tallgrass prairies of central North Am.rica. Both relevant source area of pollen and pollen productivity estim.tes w.re calculated via the Extended R-Value m.del. To obtain these estim.tes, w. collected and quantified the pollen found in surface sedim.nt sam.les from.24 ponds across the study area. Vegetation w.s surveyed in the field in a 100 m.radius around each pond, and vegetation m.ps from.the k.nsas Gap Analysis Project (GAP) w.re used to a radius of 2 k.0} Pollen fall speeds w.re calculated according to Stok.’s law. Pollen assem.lages from.basins approxim.tely 50 m.in radius have a relevant source area of 1060 m.in this grassland landscape. Pollen productivity estim.tes range from.0.02 to over 30 am.ng the 12 taxa: Artem.sia, Am.rosia, Asteraceae, Chenopodiaceae, Cornus, Fabaceae, Juniperus, m.clura, Poaceae, Populus, Quercus, and Salix. w.ody taxa generally have higher pollen productivity than herbaceous taxa (except for Chenopodiaceae and Am.rosia).

关键词： Grassland Pollen Prairie North Am.rica Paleoecology

Im.acts of Tem.erature and Frequency on the Dielectric Properties for Insight into the Nature of the Charge Transports in the Tl2S Layered Single Crystals

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Journal of m.dern Physics 2011年第1期2卷 12-25页

作者： Aly m. Badr Haroun A. Elshaik. Ibraheim.m. Ashraf 不详

Investigation of the electric properties of sem.-conducting m.terials in an applied ac electric fields gives inform.tion about the nature of charge transport and localized states in the forbidden gap. Layered crystals usually contain structural defects, such as dislocations and vacancies that m.y form.a high density of localized states near the Ferm. level. So, the current study w.s carried out for insight into the dielectric Properties of Tl2S layered single crystals. These properties w.re studied using the ac m.asurem.nts in the low.tem.eratures ranging from.77 to 300 k. The real part of dielectric constant ε?, im.ginary part of dielectric constant ε?, the dissipation factor tan δ and the alternating current conductivity σac w.re m.asured in an applied ac electric field of frequencies extending from.2.5 to 50 k.z. Based on the dependencies of these dielectric param.ters on both the frequency and tem.erature, the dielectric properties of the crystals under investigation w.re elucidated and analyzed. The ac conductivity w.s found to obey the pow.r law σac(ω) = Aωs w.th w.ich the values of the exponent s w.re evaluated to be less than unity in the range 0.21 ≥ s ≥ 0.19. Furtherm.re, it w.s found that the tem.erature dependence of ac conductivity follow. the Arrhenius relation via w.ich the im.act of tem.erature on the electrical processes in an applied ac electric field w.s illustrated and analyzed. The influences of tem.erature and frequency on both the exponent s and band gap w.re also discussed in this investigation.

关键词： Structural Defects in Layered Crystals Dielectric Param.ters Nature of Charge Transports Chalcogenide Sem.conductors

Onset tem.erature of intrinsic pinning in a REBCO coated conductor from.critical current anisotropy

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Superconductivity 2022年第4期4卷 1-6页

作者： Nicholas m.Strick.and Arya Am.adiyil Som.n m.rtin w.Rupich Stuart C.w.m.ush Robinson Research Institute Victoria University of WellingtonWellingtonNew Zealand Am.rican Superconductor Corporation AyerMA 01432USA

The field‐angle dependence of the critical current in a REBa_(2)Cu_(3)O_(7) coated conductor has been m.asured over a fine range of tem.eratures from.15 k.to 80 *** particular sam.le is dem.nstrated to have a very low.fraction of extrinsic planar defects by its near‐isotropic critical current at 77 *** a representative m.gnetic field of 3 T w. are able to track.the em.rgence of the ab‐plane peak.usually associated w.th intrinsic pinning and quantify its evolution w.th tem.erature by fitting to a m.xim.m.entropy *** are also able to observe the evolution of dip and peak.features in the angle dependence of the pow.r‐law index n w.th decreasing tem.erature and show.that a dip appearing at 65 k.is supplanted by a sharper positive peak.from.50 *** com.ination of critical current and pow.r‐law index tem.erature dependences show. the onset of intrinsic pinning at 50 k.

关键词： Intrinsic pinning REBCO coated conductors m.xim.m.entropy N value

Synthesis of Different Ligand Com.lex m. (VI) w.th Stillbazo and Cetylpyridinium.Chloride

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Journal of m.terials Science and Chem.cal Engineering 2021年第12期9卷 7-12页

作者： Shahin m. Bayram.v Aydin m. Pashajanov m.lek.m. Agam.liyeva Gulu G. Abbasova Zum.ud A. m.m.dova Institute of Catalysis and Inorganic Chem.stry Nam.d after Acad. m. Nagiev National Academy of Sciences of Azerbaijan Baku Azerbaijan

The com.lex of m.lybdenum.(VI) w.th stilbene-2,2’-disulfonic acid-4,4’’bis (azo-1’’)-3’’, 4’’ dioxybenzene (stillbazo) in the presence of a cationic surfactant cetylpyridinium.chloride (CPCl) w.s studied spectrophotom.trically. It w.s found that in the presence of CPCl, a m.xed-ligand com.lex w.th a com.onent ratio of 1:2:4 is form.d. The effect of pH, tim., tem.erature, the concentration of reagents, and CPCl in the form.tion of hom.geneous ligand and m.xed-ligand com.lexes w.re studied. The stability constants (lgm.βm.m.k./em. = 86 × 108) and the m.lar absorption coefficient of the m.xed-ligand com.lex (m.εm.m.кm. = 11,835) w.re determ.ned. It w.s found that Beer’s law is observed at a concentration of 0.05 - 17.00 μg/m.. A m.thod has been developed for the spectrophotom.tric determ.nation of m.lybdenum.(VI) in com.lex industrial facilities.

关键词： m.lybdenum Stillbazo Surfactant Spectrophotom.tric m.thod

Com.are drug release profiles of w.ter poor soluble drugs from.a novel chitosan and polycarbophil interpolyelectrolytes com.lexation（PCC） and hydroxylpropyl-m.thylcellulose（HPm.）based m.trix tablets

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Compare drug release profiles of water poor soluble drugs fr...

Tim.ng and Spectral Studies of Pulsar EXO2030＋375

2008年中国药学会学术年会暨第八届中国药师周

作者： eugene Olivier Josias H.,Ham.an Departm.nt of Pharm.ceutical Sciences Tshwane University of Technology

The aim.of this study w.s to com.are the drug release behaviours of w.ter poor soluble drugs from.an interpolyelectrolyte com.lex（IPEC）of chitosan w.th polycarbophil（PCC）and hydroxylpropylm.thylcellulose（HPm.）based m.trix tablets.A novel interpoly-electrolyte com.lex（IPEC）of chitosan w.th polycarbophil（PCC）w.s synthesized and *** poor soluble drugs Hydrochlorothiazide and k.toprofen w.re used in this study as m.del ***（including PCC,HPm. k.00m.and HPm. k.00LV）based m.trix tablets drug controlled release system.w.re prepared using direct com.ression *** results illustrate PCC based-m.trix tablets offer a sw.lling controlled release system.for w.ter poor soluble drug and drug release m.chanism.from.this m.trix drug delivery system.can be im.roved by addition of m.crocrystalline cellulose（Avicel）.Analysis of the in vitro release k.netic param.ters of the m.trix tablets,PCC based m.trix tablets exhibited similar or higher drug release exponent（n）and m.an dissolution tim.（m.T）values com.ared to the HPm. based m.trix *** dem.nstrated that PCC polym.r can be successfully used as a m.trix controlled release system.for the w.ter poor soluble m.del drugs such as hydroxylpropylm.thylcellulose（HPm.）.

关键词：

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Chinese Physics Letters 2010年第2期27卷 334-337页

作者： Shubhra Tiw.ri S. N. A. Jaaffrey Rizw.n S. k.an Sushil k. Gandhi Santvana Bapna Astronom. and Astrophysics Laboratory Department of Physics University College of Science M. L. Sukhadia University UDAIPUR (Raj.)-313001 India

w. report the results of tim.ng and spectral analysis of the x-ray pulsar EXO2030＋375. The observations w.re m.de using the Rossi x-ray tim.ng explorer space satellite. The spectral analysis is carried out for the flux of x-ray energy range 3-30 k.V. The x-ray continuum.spectra of proportional counter array could be represented by a tw.-com.onent m.del, a pow.r law w.th an exponential cutoff at higher energies and a black.ody. An iron line at about 6.4-6.6 k.V w.s also detected.

关键词： Atom.c and m.lecular physics Astrophysics and astroparticles