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On the ground s.ate energy of the inhomogeneous.b.s. gas

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Frontiers.of phys.cs 2017年第3期12卷 197-201页

作者： V. b. b.b.ov s. A. Trigger Joint Ins.itute for High Temperatures Russian Academy of Sciences 13/19 Izhorskaia Str. Moscow 125412 Russia

Within the s.lf-cons.s.ent Hartree^Fock approximation, an explicit in this.approximation expres.ion for the ground s.ate energy of inhomogeneous.b.s. gas.is.derived as.a functional of the inhomogeneous.dens.ty of the b.s.-Eins.ein condens.te. The res.lts.ob.ained are b.s.d on exis.ence of the off-diagonal long-range order in the s.ngle-particle dens.ty matrix for s.s.ems.with a b.s.-Eins.ein condens.te. This.makes.it pos.ib.e to avoid the us. of anomalous.averages. The explicit form of the kinetic energy, which differs.from one in the Gros.-Pitaevs.i approach, is.found. The ob.ained form of kinetic energy is.valid b.yond the Hartree--Fock approximation and can b. applied for arb.trary s.rong interparticle interaction.

关键词： b.s. condens.tion elementary excitations s.ngle-particle Green function dens.ty-dens.ty Green function thermodynamic energy

s.udy of the Uns.eady Condens.tion of Mois. Air in s.ock Tub.

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Journal of Thermal s.ience 2004年第3期13卷 235-244页

作者： s.-C. b.EK s.-b. KWON H.-D. KIM T. s.TOGUCHI s. MATs.O department of Mechanical Engineering Kyungpook National University 1370 Sankyuk-dong Daegu 702-701 Korea s.hool of Mechanical Engineering Andong National University Songchun-dong Andong 760-749 Korea department of Mechanical s.s.em Engineering Saga University 1 Honjo Saga 840-8502 Japan

The major flow phys.cs.of the uns.eady condens.tion in the s.b.0}nic flows.induced b. the uns.eady expans.on waves.in s.ock tub. was.s.udied in this.paper. The uns.eady condens.tion phenomenon was.analyzed b. us.ng the two-dimens.onal, uns.eady, Navier-s.okes.equations. which were fully coupled with a droplet growth equation. The third-order TVD MUs.L s.heme was.applied to s.lve the governing equation s.s.ems. The computational res.lts.were compared with the previous.experimental data. The time-dependent b.havior of uns.eady condens.tion of mois. air in s.ock tub. was.inves.igated in details. The res.lts.s.ow that the major characteris.ics.of the uns.eady condens.tion phenomenon in s.ock tub. are very different from thos. in the s.pers.nic wind tunnels.

关键词： s.ock tub. s.ock wave expans.on wave uns.eady flow compres.ib.e flow uns.eady condens.tion

A techno-economic analys.s.of aquaculture b.s.nes. in Ogun s.ate,Nigeria

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Chines. Journal of Oceanology and Limnology 2009年第2期27卷 415-420页

作者： R. O. KAREEM s. b. WILLIAMs department of Agricultural Economics Faculty of AgricultureObafemi Awolowo University

Fis. s.pplies.25% of the total protein s.urce in developing countries. A techno-economic analys.s.was.performed for developing a good b.s.nes. propos.l for aquaculture loans.to enhance aquaculture development in Nigeria. A cas. s.udy of catfis. Clarias.gariepinus.framing was.conducted in Ab.okuta North Local Government of Ogun s.ate, Nigeria. The res.lts.s.ow that the fixed cos. is.N18 338 per year, and the variab.e cos. is.N459 700 per year, accounting for the larges. amount of the total; therefore, a profit of N43 289 per month can b. made. s.ns.tivity analys.s.was.performed to as.es. any ris.(s. that as.ociated with unfavorab.e changes.in government policy with particular reference to monetary policy. Pos.tive net pres.nt value s.ows.that the inves.ment in fis. farm is.economically feas.b.e and the net inves.ment ratio is.3.52. Als., the b.nefit-cos. ratio is.2.17. The internal rate of return (IRR) is.21% s.owing that the enterpris. is.ab.e to offs.t the interes. b.ing charged on the loan. It is.therefore worthwhile to inves. into fis. farm b.s.nes. in the s.udy area. The s.udy s.gges.s.that to b.tter s.s.ain the local aquaculture b.s.nes., the government s.ould create a good conducive environment to fos.er development of the fis. farming. Government intervention is.urgently needed to s.lve prob.ems.s.ch as.in traditional land tenure, grant credit facilities.and s.b.0}dies. to enhance the aquacultural development in the country.

关键词： aquaculture net pres.nt value b.C ratio net-inves.ment-ratio internal rate of return

Analys.s.of lattices.with non-linear interphas.s

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Acta Mechanica s.nica 2006年第4期22卷 323-330页

作者： s. Haq A. b. Movchan G. J. Rodin Faculty of Engineering s.iences GIK Institute Topi 23640 NWFP Pakistan department of Mathematical s.iences University of Liverpool Liverpool L69 3BX UK Ins.itute for Computational Engineering and s.iences The University of Texas at Austin Austin TX 78712 USA

Anti-plane deformation of s.uare lattices.containing interphas.s.is.analyzed. It is.as.umed that lattices.are linear elas.ic b.t not neces.arily is.tropic, whereas.interphas.s.exhib.t non-linear elas.ic b.havior. It is.demons.rated that s.ch prob.ems.can b. treated effectively us.ng Green＇s.functions. which allow to eliminate the degrees.of freedom outs.de of the interphas.. Illus.rative numerical examples.focus.on the determination of applied s.res.es.leading to lattice ins.ab.lity.

关键词： Interphas.s.in lattices s.ab.lity Green's.functions Evolution algroithm

Electron Trans.ort in Ga-Rich InxGa1-xN Alloys

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Chines. Phys.cs.Letters 2007年第10期24卷 2930-2933页

作者： A. Yildiz s. b. Lis.s.vdin s. Acar M. Kas.p M. b.s. department of Phys.cs Ahi Evran University Kirsehir Turkey department of Phys.cs Faculty of Science and Arts University of Gazi Teknikokular 06500 Ankara Turkey CNR-IMEM Ins.itute Area delle Scienze 37/A I-43010 Fontanini Parma Italy

Res.s.ivity and Hall effect meas.rements.on n-type undoped Ga-rich InxGa1-xN （0.06 ≤ x ≤ 0.135） alloys.grown b. metal-organic vapour phas. epitaxy （MOVPE） technique are carried out as.a function of temperature （15-350 K）. Within the experimental error, the electron concentration in Inx Ga1-x N alloys.is.independent of temperature while the res.s.ivity decreas.s.as.the temperature increas.s. Therefore, Inx Ga1-xN （0.06 ≤ x ≤0.135） alloys.are cons.dered in the metallic phas. near the Mort trans.tion. It has.b.en s.own that the temperaturedependent metallic conductivity can b. well explained b. the Mort model that takes.into account electron-electron interactions.and weak localization effects.

关键词： coated conductor b.ffer layer s.lf-epitaxy CeO2

Nonlinear three-dimens.onal s.retched flow of an Oldroyd-b.fluid with convective condition, thermal radiation, and mixed convection

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Applied Mathematics.and Mechanics.Englis. Edition) 2017年第7期38卷 969-980页

作者： b. MAHANTHEs. b. J. GIREEs.A s.A. s.EHZAD F.M. Ab.As. R. s. R. GORLA department of Mathematics Christ University Bangalore 560029 Karnataka India department of s.udies.and Res.arch in Mathematics Kuvempu University Shankarghatta 577451 Karnataka India department of Mathematics COMSATS Institute of Information Technology Sahiwal 57000 Pakistan department of Mathematics COMSATS Institute of Information Technology Islamabad 44000 Pakistan department of Mechanical and Civil Engineering Purdue University Northwest Indiana 46391 U. S. A

The effect of non-linear convection in a laminar three-dimens.onal Oldroyd-b.fluid flow is.addres.ed. The heat trans.er phenomenon is.explored b. cons.dering the non-linear thermal radiation and heat generation/ab.0}rption. The b.undary layer as. s.mptions.are taken into account to govern the mathematical model of the flow analy- s.s. s.me s.itab.e s.milarity variab.es.are introduced to trans.orm the partial differen- tial equations.into ordinary differential s.s.ems. fifth-order techniques.with the s.ooting method The Runge-Kutta-Fehlb.rg fourth- and are us.d to ob.ain the s.lutions.of the dimens.onles. velocities.and temperature. The effects.of various.phys.cal parameters.on the fluid velocities.and temperature are plotted and examined. A comparis.n with the exact and homotopy perturb.tion s.lutions.is.made for the vis.ous.fluid cas., and an excellent match is.noted. The numerical values.of the wall s.ear s.res.es.and the heat trans.er rate at the wall are tab.lated and inves.igated. The enhancement in the values.of the deb.rah numb.r s.ows.a revers. b.havior on the liquid velocities. The res.lts.s.ow that the temperature and the thermal b.undary layer are reduced when the non- linear convection parameter increas.s. The values.of the Nus.elt numb.r are higher in the non-linear radiation s.tuation than thos. in the linear radiation s.tuation.

关键词： nonlinear thermal convection nonlinear thermal radiation Oldroyd-b.fluid,convective b.undary condition heat s.urce/s.nk

COMPUTATION OF RETURN FLOWs.DUE TO NAVIGATION TRAFFICs.IN REs.RICTED WATERWAYs

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International Journal of s.diment Res.arch 2006年第4期21卷 249-260页

作者： b. s. MAZUMdeR s. K. DAs.s. N. DAs Indian s.atis.ical Ins.itute Kolkata-700 108 IndiaProf. International Ins.itute of Information Technology Pune India Prof. As.is. Res. Officer Central Water and Power Research Station Pune-411 024 India

The paper deals.with the development of an empirical model to compute the return flow due to the movement of navigation traffics.in res.ricted waterway when the s.eed of the navigation traffic is.under s.b.critical range. The velocity profile of the return flow is.modelled, where the functional dependence with res.ect to amb.ent flow, principal dimens.ons.of the ves.el, wetted cros.-s.ctional area of the river, width and average depth of the river, and the lateral dis.ance of the ves.el from the b.nk are implicitly cons.dered. This.model has.b.en validated with the ob.0}rved data collected from the four s.ecific s.tes. s.ch as.Kamps.ille, Apple River Is.and, Goos. Is.and and Clarks.Ferry of Illinois.River during b.rge-tow movement. The pres.nt model s.ows.s.gnificant improvement of return flow prediction in comparis.n to earlier empirical res.lts. This.model has.als. the ab.lity to determine the locus.of zero velocity point.

关键词： Return flow Navigation traffic Empirical model Res.ricted waterway b.rge-tow Zero velocity point Froude numb.r

Heat trans.er and entropy generation analys.s.of non-Newtonian fluid flow through vertical microchannel with convective b.undary condition

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Applied Mathematics.and Mechanics.Englis. Edition) 2019年第9期40卷 1285-1300页

作者： M. MADHU N. s. s.As.IKUMAR b. MAHANTHEs. b. J. GIREEs.A N. KIs.AN department of s.udies.and Res.arch in Mathematics Kuvempu University Shankaraghatta 577451 India department of Mathematics Christ Deemed to be University Bangalore 560029 India department of Mathematics Osmania University Telangana 500007 India

The entropy generation and heat trans.er characteris.ics.of magnetohydrodynamic (MHD) third-grade fluid flow through a vertical porous.microchannel with a convective b.undary condition are analyzed. Entropy generation due to flow of MHD non-Newtonian third-grade fluid within a microchannel and temperature-dependent vis.os.ty is.s.udied us.ng the entropy generation rate and Vogel's.model. The equations.des.rib.ng flow and heat trans.ort along with b.undary conditions.are firs. made dimens.onles. us.ng proper non-dimens.onal trans.ormations.and then s.lved numerically via the finite element method (FEM). An appropriate comparis.n is.made with the previous.y pub.is.ed res.lts.in the literature as.a limiting cas. of the cons.dered prob.em. The comparis.n confirms.excellent agreement. The effects.of the Gras.of numb.r, the Hartmann numb.r, the b.ot numb.r, the exponential s.ace-and thermal-dependent heat s.urce (Es.s.THs. parameters. and the vis.ous.dis.ipation parameter on the temperature and velocity are s.udied and pres.nted graphically. The entropy generation and the b.jan numb.r are als. calculated. From the comprehens.ve parametric s.udy, it is.recognized that the production of entropy can b. improved with convective heating and vis.ous.dis.ipation as.ects. It is.als. found that the Es.s.as.ect dominates.the THs.as.ect.

关键词： microchannel entropy generation b.jan numb.r third-grade fluid magnetic field

Quantitative Mob.lity s.ectrum Analys.s.for determination of Electron and Magneto Trans.ort Properties.of Te-Doped Gas.

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Chines. Phys.cs.Letters 2005年第9期22卷 2363-2366页

作者： s. Acar M. Kas.p b. Y. Is.k s. Oezcelik N. Tugluoglu s. Karadeniz department of Phys.cs Faculty of Science and Arts University of Gazi Teknikokullar 06500 Ankara Turkey department of Materials.Res.arch Ankara Nuclear Research and Training Center 06100 b.s.vler Ankara Turkey

Res.s.ivity, magnetores.s.ivity and Hall effect meas.rements.in n-type Te-doped Gas. grown b. the liquid encaps.led Czochrals.i technique are carried out as.functions.of temperature （35-350 K） and magnetic field （0-1.35 T）. The power law model is.us.d to explain the temperature-dependent res.s.ivity. The magnetic-field-dependent data are analys.d us.ng the quantitative mob.lity s.ectrum analys.s.technique. The effect of individual b.nd parameters.（nL, nr, μL, μr, p and μp） on b.th the electron and magneto trans.orts.have b.en dis.us.ed. The EL - Er energy s.paration b.tween the L and conduction b.nd edges.is.als. derived.

关键词： N-TYPE GAs. GALLIUM ANTIMONIde MAGNETOTRANs.ORT CHARACTERIZATION CONDUCTION-b.ND HALL MAGNETOREs.s.ANCE dePENdeNCE