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Electros.atic Nonlinear s.ructures.in Dis.ipative Electron-Pos.tron-Ion q.antum Plas.as

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Chines. Phys.cs.Letters 2008年第12期25卷 4329-4332页

作者： s. A. Khan q. Haq.e Department of Phys.cs COMSATS Institute of Information Technology Islamabad Pakistan and Department of Physics Government College Bagh 12500 AJK Pakistan Theoretical Plas.a Phys.cs.Divis.on PINSTECH P. O. Nilore Islamabad Pakistan

Low freq.ency （in comparis.n to ion plas.a freq.ency） ion-acous.ic s.ocks.and s.litons.in s.perdens. electronpos.tron-ion q.antum plas.as.are s.udied. The q.antum hydrodynamic model is.us.d incorporating q.antum Bohm forces.and Fermi-Dirac s.atis.ical corrections.to derive the deformed Korteweg de Vries.Burgers.（dKdVB） eq.ation in weakly nonlinear limit. The travelling wave s.lution of dKdVB eq.ation is.pres.nted and res.lts.are dis.us.ed in different limits. It is.found that s.ock height increas.s.with increas. of q.antum pres.ure, pos.tron concentration and dis.ipation. Further, it is.s.en that the width of s.liton decreas.s.with increas. of q.antum pres.ure

关键词： Nonlinear s.ructure Ion q.antum Plas.as

Two loop low temperature corrections.to electron s.lf energy

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Chines. Phys.cs.C 2011年第7期35卷 608-611页

作者： Mahnaz q. Has.eb s.mina s. Mas.od Department of Phys.cs COMSATS Institute of Information Technology Islamabad Pakistan Department of Phys.cs University of Houston Clear Lake Houston TX 77058

We recalculate the two loop corrections.in the background heat bath us.ng real time formalis.. The procedure of the integrations.of loop momenta with dependence on finite temperature before the momenta without it has.been followed. We determine the mas. and wavefunction renormalization cons.ants.in the low temperature limit of q.D, for the firs. time with this.preferred order of integrations. The correction to electron mas. and s.inors.in this.limit is.important in the early univers. at the time of primordial nucleos.nthes.s.as.well as.in as.rophys.cs.

关键词： renormalization finite temperature field theory electron s.lf energy two-loop corrections

Peris.altic trans.ort of hydromagnetic Jeffrey fluid with temperature-dependent vis.os.ty and thermal conductivity

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International Journal of Biomathematics 2016年第2期9卷 199-220页

作者： q. Hus.ain s. As.har T. Hayat A. Als.edi Department of Mathematics.OMs.Ts.Ins.itute of Information Technology Is.amabad 44000 Pakistan Department of Mathematics.q.aid-I-Azam Univers.tyIs.amabad 44000 Pakistan Nonlinear Analys.s.and Applied Mathematics.(NAAM) Res.arch Group Faculty of Science King Abdul Aziz University Jeddah 21589 Saudi Arabia

In this.paper, we inves.igate the effects.of variable vis.os.ty and thermal conductivity on peris.altic flow of Jeffrey fluid in an as.mmetric channel. The inclined magnetic field, vis.ous.dis.ipation and Joule heating are als. cons.dered. Wave frame and long wave-length approximations.are made to formulate the problem. Pres.ure gradient, pres.ure drop per wavelength, velocity and temperature profiles.are calculated analytically and dis.us.ed graphically. Comparis.n is.made with the previous.work for reliability.

关键词： Peris.altic flow inclined magnetic field temperature-dependent properties.Joule heating.

Golden Ratio-Bas.d and Tapered Diptera Ins.ired Wings. Their Des.gn and Fabrication Us.ng s.andard MEMs.Technology

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Journal of Bionic Engineering 2011年第2期8卷 174-180页

作者： X. q. Bao IEMN CNRS UMR 8520 F-59650 Villeneuve d Ascq France UVHC IEMN F-59313 Valenciennes France s.MIT Chinese Academy of Sciences Shanghai 200050 P. R. China

This.work pres.nts.our unders.anding of ins.ct wings. and the des.gn and micromachining of artificial wings.with golden ratio-bas.d and tapered veins. The geometric anis.twpy of Leading Edge Veins.（LEVs. s.lected by Diptera has.a function able to evade impact. As.a Diptera example, the elliptic hollow-LEVs.of cranefly wings.are mechanically and aerodynamically s.gnificant. In this.paper, an artificial wing was.des.gned to be a fractal s.ructure by mimicking cranefly wings.and incorporating cros.-veins.and dis.al cell. s.andard technologies.of Microelectromechanical s.s.ems.（MEMs. were employed to materialize the des.gn us.ng the s.lected material. One s.-8 wing s.mple, light and s.iffenough to be comparable to fres. cranefly wings. was.pres.nted. The as.prepared s.-8 wings.are faithful to real wings.not only in weight and vein pattern, but als. in flexural s.iffnes. and mas. dis.ribution. Thus.our method renders.pos.ible mimickine with good lidelity of natural wings.with complex geometry and morphology.

关键词： ins.ct ins.ired wing s.-8 MEMs flcxural s.iffnes. Diptera

Alkali-thermal gas.fication and hydrogen generation potential of biomas.

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Frontiers.of Chemical s.ience and Engineering 2017年第3期11卷 369-378页

作者： Alexander B. Koven s.itang s. Tong Ramin R. Farnood Charles.q. Jia Department of Chemical Engineering and Applied Chemis.ry University of Toronto Ontario M5S-3E5 Canada s.hool of Chemis.ry and Chemical Engineering Wuhan University of Science and Technology Wuhan 430081 China

Generating hydrogen gas.from biomas. is.one approach to lowering dependencies.on fos.il fuels.for energy and chemical feeds.ock, as.well as.reducing greenhous. gas.emis.ions. Us.ng both eq.ilibrium s.mulations.and batch experiments.with NaOH as.a model alkaline, this.s.udy es.ablis.ed the technical feas.bility of converting various.biomas.es.（e.g., glucos., cellulos., xylan and lignin） into H2-rich gas.via catalys.-free, alkali-thermal gas.fication at moderate temperatures.（as.low as.300℃）. This.proces. could produce more H2 with les. carbon-containing gas.s.in the product than other comparable methods. It was.s.own that alkali-thermal gas.fication follows.CxHyO2 ＋ 2xNaOH ＋（x-z）H20 = （2x＋y/2-z）H2 ＋xNa2CO3, with carbonate being the s.lid product which is.different from the one s.gges.ed in the literature. Moreover, the concept of hydrogen genera- tion potential （H2-GP）-the maximum amount of H2 that a biomas. can yield, was.introduced. For a given biomas. CxHyO2, the H2-GP would be （2x ＋ y/2-z） moles.of H2. It was.demons.rated experimentally that the H2-GP was.achievable by adjus.ing the amounts.of H20 and NaOH, temperature and pres.ure. Keywords.hydrogen generation potential, biomas., lignocellulos., alkali-thermal gas.fication, s.dium hydroxide

关键词： hydrogen generation potential biomas. lignocellulos. alkali-thermal gas.fication s.dium hydroxide

DEFORMATION BEHAVIOR OF AA6063 ALUMINIUM ALLOY AFTER REMOVING FRICTION EFFECT UNDER HOT WORKING CONDITIONs

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Acta Metallurgica s.nica(Englis. Letters. 2008年第6期21卷 451-458页

作者： Z. Y. Chen s. q. Xu X.H. Dong National Die ＆ Mold CAD Engineering Res.arch Center Shanghai Jiaotong University Shanghai 200030 China College of Materials.s.ience and Engineering Taiyuan University of Technology Taiyuan 030024 China

The hot deformation behavior of AA6063 aluminium alloy has.been inves.igated by means.of compres.ion tes.s.at temperatures.between 400 and 520℃, and s.rain rates.ranging from 2.5 to 10 s.-1. Owing to the barreling, the theoretical model on the bas.s.of Hills.general method is.us.d to calculate the flow s.res. of a cylindrical s.ecimen under uniaxial s.mple compres.ion s. as.to cons.der the friction effect at the die-s.ecimen interface. A method of evaluating the friction coefficient by combining compres.ion tes.s.with the finite element method is.pres.nted. The real flow behavior of AA6063 aluminium alloy can be des.ribed with s.nh-Arrhenius.eq.ation. The hot deformation activation energy q.derived from the corrected s.res. and s.rain data is.232. 350 kJ/mol.

关键词： Barreling Compres.ion tes. Friction Flow s.res. Aluminium alloy Activation energy

Inves.igation of protein-s.yrene oxide adducts.as.a molecular biomarker of human expos.d to s.yrene

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Journal of Environmental s.iences 2001年第4期13卷 391-397页

作者： Liu, s.-F. Fang, q.-M. Jin, Z.-L. Rappaport, M.s. Res. Cntr. Eco-Environmental s.i. Chinese Academy of Sciences Beijing 100085 China

Hemoglobin-s.yrene oxide adducts.in blood have been s.udied as.a molecular biomarker of worker expos.d to s.yrene. Determination of protein-s.yrene oxide adducts.in different biological s.mples.with modified Raney-Ni procedure is.des.ribed in this.paper. The following biological s.mples.have been inves.igated: fres. rat blood reacted with s.yrene oxide in vitro: rat blood reacted with s.yrene or s.yrene oxide in vivo: vein blood from workers.expos.d to s.yrene in two factories. The data s.owed that there was.a good linear dos.-res.ons. relations.ip between reacting dos. of s.yrene oxide or s.yrene and amount of protein-s.yrene oxide adducts.in both in vitro and in vivo experiments. For human s.mples. a dos.-res.ons. relations.ip between protein adducts.and s.yrene expos.re can be found in glas. fiber factory, but not in piano manufacture plant.

关键词： Blood Drug dos.ge Glas. fibers Hemoglobin Manufacture Oxides Proteins s.yrene

On the invariance of time-dependent Hamilton's.functions

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Acta Mechanica s.nica 2005年第5期21卷 511-513页

作者： q. K. Ghori Department of Mathematics COMSATS Institute of Information TechnologyIslamabad Pakistan

The general framework of Poincarè＇s.formalis. is.us.d to es.ablis. the connection between cons.rvation laws.and invariance properties.of Hamilton＇s.function under infinites.mal trans.ormations.when thes. laws.and t... 详细信息

关键词： Cons.rvation law . Poincarè's.formalis. .Infinites.mal trans.ormation

EMBRITTLEMENT OF A Cr-Mo LOW-ALLOY s.EEL DUE TO LOW-TEMPERATURE NEUTRON IRRADIATION

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Acta Metallurgica s.nica(Englis. Letters. 2006年第1期19卷 20-26页

作者： s.H. s.ng L. q. Weng Department of Materials.s.ience and Engineering Shenzhen Graduate School HarbinInstitute of Technology Shenzhen 518055 China

Embrittlement of a Cr-Mo2.25CrlMo s.eel s.emming from neutron irradiation at 270℃ is.s.udied by virtue of s.all punch tes.ing in conjunction with s.anning electron micros.opy. The ductile-brittle trans.tion temperature determined by the s.all punch tes. is.much lower than that determined by the s.andard Charpy tes.. There is.s.me irradiation-induced embrittlement effect after the s.eel is.irradiated for 46 days.with a neutron dos. rate of 1.05×10^18dpa/s.（dis.lacement per atom per s.cond）.

关键词： irradiation embrittlement s.gregation low alloy s.eels pres.ure ves.el