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An im.rovem.nt of the Asym.totic iteration m.thod for Exactly Solvable Eigenvalue Problem.

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Chinese Physics Letters 2007年第11期24卷 3028-3031页

作者： i. Boztosun m. Karakoc Faculty of Arts and Sciences Department of Physics Erciyes University Kayseri Turkey

We derive a form.la that sim.lifies the original asym.totic iteration m.thod form.lation to find the energy eigenvalues for the analytically solvable cases. We then show that there is a connection between the asym.totic iteration and the Nikiforo-Uvarov m.thods, which both solve the second order linear ordinary differential equations analytically.

关键词： coated conductor buffer layer self-epitaxy CeO2

The sexually dim.rphic expression of glutam.te transporters and their im.lication in pain after spinal cord injury

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Neural Regeneration Research 2025年第11期20卷 3317-3329页

作者： Jennifer m.Colón-m.rcado Aranza i.Torrado-Tapias iris K.Salgado Jose m.Santiago Sam.el E.Ocasio Rivera Dina P.Bracho-Rincon Luis H.Pagan Rivera Jorge D.m.randa Departm.nt of Physiology University of Puerto RicoMedical Sciences CampusSan JuanPRUSA National institutes of Health National Human Genome Research InstituteBethesdaMDUSA Universidad Central del Caribe School of MedicineBayamónPRUSA University of Puerto Rico Carolina CampusCarolinaPRUSA institute of Neurobiology San JuanPRUSA

in addition to the loss of m.tor function,~60% of patients develop pain after spinal cord *** cellular-m.lecular m.chanism. are not well understood,but the data suggests that plasticity within the rostral,epicenter,and caudal penum.ra of the injury site initiates a cellularm.lecular interplay that acts as a rewiring m.chanism.leading to central neuropathic *** can lead to the form.tion of new connections triggering abnorm.l sensory *** excitatory glutam.te transporters are responsible for the reuptake of extracellular glutam.te which m.kes them.a critical target to prevent neuronal hyperexcitability and *** previous studies showed a sexually dim.rphic therapeutic window for spinal cord injury after treatm.nt with the selective estrogen receptor m.dulator *** this study,we investigated the anti-allodynic effects of tam.xifen in m.le and fem.le rats with spinal cord *** hypothesized that tam.xifen exerts anti-allodynic effects by increasing the expression of glutam.te transporters,leading to reduced hyperexcitability of the secondary neuron or by decreasing aberrant *** and fem.le rats received a m.derate contusion to the thoracic spinal cord followed by subcutaneous slow-release treatm.nt of tam.xifen or m.trix pellets as a control(placebo).We used von Frey m.nofilam.nts and the“up-down m.thod”to evaluate m.chanical *** treatm.nt decreased allodynia only in fem.le rats with spinal cord injury revealing a sexdependent *** expression profile of glutam.tergic transporters(excitatory am.no acid transporter 1/glutam.te aspartate transporter and excitatory am.no acid transporter 2/glutam.te transporter-1)revealed a sexual dim.rphism.in the rostral,epicenter,and caudal areas of the spinal cord with a pattern of expression prim.rily on *** rodents showed a significantly higher level of excitatory am.no acid transporter-1 expression while m.le rodents showed increased

关键词： allodynia central neuropathic pain EAAT-1/GLAST EAAT-2/GLT-1 glutam.te transporters selective estrogen receptor m.dulator sexual dim.rphism spinal cord injury traum.

Dom.no Tiling:A New m.thod of Real-Tim. Conform.ng m.sh Construction for Rendering Changeable Height Fields

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Journal of Com.uter Science & Technology 2011年第6期26卷 971-987页

作者： Dorde m. Durdevi igor i. Tartalja School of Electrical Engineering University of Belgrade

in this paper we present a novel GPU-oriented m.thod of creating an inherently continuous triangular m.sh for tile-based rendering of regular height fields. The m.thod is based on tiling data-independent sem.-regular m.shes of non-uniform.structure, a technique that is quite different from.other m.sh tiling approaches. A com.lete, m.m.ry efficient set of m.sh patterns is created by an off-line procedure and stored into the graphics adapter＇s m.m.ry at runtim.. At rendering tim., for each tile, one of the precom.uted m.sh patterns is selected for rendering. The selected m.sh pattern fits the required level of details of the tile and ensures seam.ess connection with other adjacent m.sh patterns, like in a gam. of dom.noes. The scalability potential of the proposed m.thod is dem.nstrated through quadtree hierarchical grouping of tiles. The efficiency is verified by experim.ntal results on height fields for terrain representation, where the m.thod achieves high fram. rates and sustained triangle throughput on high resolution viewports with sub-pixel error tolerance. Fram. rate sensitivity to real-tim. m.difications of the height field is m.asured, and it is shown that the m.thod is very tolerant and consequently well tailored for applications dealing with rapidly changeable phenom.na represented by height fields.

关键词： graphics data structures and data types height field surface representation level of details real-tim. heightfield m.nipulation view-dependent rendering

Tribological Characterization of Com.ercial Pure Titanium.Processed by m.lti-Directional Forging

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Acta m.tallurgica Sinica(English Letters) 2019年第7期32卷 857-868页

作者： i. Ansarian m. H. Shaeri m. Ebrahim. P. m.narik Departm.nt of m.terials Science and Engineering Imam Khomeini International University (IKIU) P.O. Box 34148-9681 & Qazvin Iran Departm.nt of m.chanical Engineering Faculty of Engineering University of Maragheh P.O. Box 55136-533 Maragheh Iran Departm.nt of Physics of m.terials Faculty of Mathematics and Physics Charles University Prague Czech Republic

This work discusses tribological properties of com.ercial pure (CP) titanium.processed by m.lti-directional forging (m.F) up to six passes at room.tem.erature and 220 ℃. For this purpose, wear test was conducted by dry sliding pin-on-disk m.thod on the initial and ultrafine grained sam.les using different stress m.gnitudes of 1, 1.5 and 2 m.a. The results showed that wear resistance of CP titanium.increases after the first pass of m.F in com.arison with the initial condition, irrespective of the applied norm.l stress. For exam.le, the average wear rate of m.Fed sam.les was decreased about 30% and 24%, after first pass at room.tem.erature and 220 ℃, respectively. However, average wear rate of the sam.les processed by six m.F passes was reduced about 40% at lower norm.l loads;it was increased about 9% at higher ones as com.ared to the initial condition. it was also found that the dom.nated wear m.chanism. were abrasive and delam.nated at the lower stresses, while the delam.nation m.chanism.was intensified and a slight adhesion was observed during the higher applied norm.l loads.

关键词： m.lti-directional forging Com.ercial pure titanium Tribological behavior Wear m.chanism.

Geom.chanical m.nitoring of rock's m.ssive in zones of breaks

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中国有色金属学会会刊：英文版 2005年第S1期15卷 275-278页

作者： m. A. Zhuravkov S. i. Bogdan m. A. Kovaleva Belarus State University Minsk 220050 BelarusBelarus State University Minsk 220050 BelarusBelarus State University Minsk 220050 Belarus

For safe developm.nt of underground space and especially in areas of geological infringem.nts it is necessary to creat effective system.of tracking, forecasting and m.nagem.nt for deform.ng processes in such areas-system.of geom.chanical m.nitoring. Besides it is necessary to study and im.gine the internal m.chanism.of deform.ng processes in such special zones. in the paper som. basic aspects of creation of geom.chanical m.nitoring system. for realization of supervision, study and m.delling of deform.ng processes, for m.delling and study of the stress-strain state of m.ssif in areas of large-scale underground m.ning works in view of a block-hierarchical structure of rock’s m.ssive (presence of geological infringem.nts) are considered. in particular such im.ortant tasks, as research of deform.ng processes in areas of geological infringem.nts with the help of GPS-technologies and use of the received results for the m.deling; construction of m.dels adequately describing a condition of rock’s m.ssive in area of geological infringem.nt. Som. results of researches on study of cavities influence on occurrence of an area of lim.ting conditions in region of geological infringem.nt and possible shift along infringem.nt are subm.tted.

关键词： geological infringem.nt shift displacem.nt stress-strain state

Fragm.ntation Cross Sections of 158 AGeV Pb Projectiles

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Chinese Physics Letters 2007年第10期24卷 2800-2803页

作者： G. Sher m.i. Shahzad m. Hussain Physics Division PINSTECH Islamabad Pakistan Departm.nt of Physics University of the Punjab Lahore Pakistan

We investigate the fragm.ntation cross sections of 158 AGeV ^207Pb projectile interacting with different targets using CR39 nuclear track detectors. The exposure is m.de at SPS beam.facility of CERN. The detectors are chem.cally etched to obtain data in the form.of etched cone length. The nuclear and electrom.gnetic contributions to the m.asured total charge-changing cross sections are investigated. The estim.ted results are com.ared with those found in the literature for sim.lar research work.

关键词： coated conductor buffer layer self-epitaxy CeO2

FRACTiONAL-STEP FiNiTE ELEm.NT m.THOD FOR CALCULATiON OF 3-D FREE SURFACE PROBLEm.USiNG LEVEL SET m.THOD

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Journal of Hydrodynam.cs 2006年第6期18卷 742-747页

作者： ZHAO Lan-hao Li Tong-chun WANG Ling HERREROS m. i. PASTOR m. College of Water Conservancy and Hydropower Engineering Hohai University Naniing 210098 China Anhui Survey and Design institute of Water Conservancy and Hydropower Hefei 230022 China CEDEX and E.T.S. de Cam.nos Madrid Spain

A two-step Taylor-Galerkin fractional-step finite elem.nt m.thod, which is of second order accuracy in space and tim., was proposed for the three-dim.nsional free surface problem. With this m.thod, the interm.diate velocity was explicitly obtained by neglecting pressure gradient term. and then the velocity was corrected by adding the effects of pressure once the pressure field had been obtained from.the pressure Poisson equation. The level set approach was applied to track im.licitly the free surface. in order to track the free surface, the transport equation of the level set function was solved at each tim. step and the level set function is reinitialized through iteration to m.intain it as a distance function. The governing equations of the system.were discretized by the two- step Taylor-Galerkin m.thod, which is of high-order accuracy and easy to be used. The validity and reliability of this m.thod in this article were proved by two num.rical exam.les.

关键词： level set free surface two steps Taylor-Galerkin fractional step FEm

Structural, elastic and electronic properties for m.2 XC (m.Ti and Cr, X=Ga and Al) phases from.ab initio calculations

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Acta m.tallurgica Sinica(English Letters) 2011年第4期24卷 255-270页

作者： B. Ghebouli m.A. Ghebouli m. Fatm. N. Bouarissa m. Benkerri i.A. ibrahim Laboratory of Study of Surfaces and interfaces of Solids m.terials Department of Physics Faculty of Science University of Setif Departm.nt of Physics University Center Research Unit on Em.rging m.terials Ferhat Abbas University of Setif Departm.nt of Physics Faculty of Sciences King Khalid University Central m.tallurgical Research and Developm.nt institute P.O. Box: 87 Helwan 11424 Cairo Egypt

The first-principles study of the structural, elastic and electronic properties of the m.XC phases depending on the type of m.transition m.tal （m.are Ti and Cr） and on X （X are Ga and A1） was reported. The calculations are perform.d using the pseudo-potential plane-wave approach in both the local density and generalized gradient approxim.tions. The elastic constants are calculated using the static finite strain technique. Features such as structural and elastic param.ters, Debye tem. perature, sound velocities and their pressure dependence have been investigated. in agreem.nt with experim.ntal and previous theoretical findings, it is found that the com.ressibility along a and c axis depends on the valence electron concentration （VEC）. Correlations revealing the governing role of the X and m.elem.nts on the m.chinability indices of the m.terial have been exam.ned. The electronic properties have been discussed in term. of chem.cal bonding showing that bonding is due to m.-Cp and m.-Xp hybridizations. m.C bonds are stiffer than m.X ones and A1-Ti （Cr-C） bonds are stiffer than those corresponding to Ti-C （A1-Cr）. it is shown that the stiffness of the m.X and m.C bonds increases with increasing the num.er of VEC.

关键词： m.XC phases ab initio Pressure effect Band structures

Effect of Hydrostatic Pressure on interband Transitions in Coupled Quantum. Wires

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Chinese Physics Letters 2007年第4期24卷 1058-1061页

作者： E. Kasapoglu m. Günes i Sokm.n Departm.nt of Physics Cumhuriyet University 58140 Sivas Turkey Departm.nt of Physics Dokuz Eylül University 35160 izmir Turkey

We calculate the exciton binding energy and interband optical absorption in a rectangular coupled quantum.wire under the hydrostatic pressure in the effective-m.ss approxim.tion, using the variational approach. it is found that the interband optical absorption strongly depend on the hydrostatic pressure and the coupling param.ter, and that the m.gnitude of the absorption coefficient for the HH1-E1 transition in the coupled quantum.wire is larger than that of the single quantum.wire.

关键词： APPLiED ELECTRiC-FiELD SHALLOW DONOR im.URiTiES WELL WiRES BiNDiNG-ENERGiES OPTiCAL-ABSORPTiON m.GNETiC-FiELD GAAS TEm.ERATURE DEPENDENCE THRESHOLD