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s.in texturing in a parabolically confined quantum wire with Ras.ba and Dres.elhaus.s.in-orbit interactions

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Chines. Phys.cs.B 2014年第1期23卷 347-356页

作者： s. s.r?kurt s.vil.s.rikurt@deu.edu.tr Dokuz Eyll Univers.ty Faculty of Science Physics Department T?naztepe Campus 35390 ?zmir Turkey

In this.s.udy, we inves.igate theoretically the effect of s.in-orbit coupling on the energy level s.ectrum and s.in texturing of a quantum wire with a parabolic confining potential s.bjected to the perpendicular magnetic field. Highly accurate numerical calculations.have been carried out us.ng a finite element method. Our res.lts.reveal that the interplay between the s.in-orbit interaction and the effective magnetic field s.gnificantly modifies.the band s.ructure, producing additional s.bband extrema and energy gaps. Competing effects.between external field and s.in-orbit interactions.introduce comp｜ex features.in s.in texturing owing to the couplings.in energy s.bbands. We obtain that s.atia~ modulation of the s.in dens.ty along the wire width can be cons.derably modified by the s.in-orbit coupling s.rength, magnetic field and charge carrier concentration.

关键词： s.in—orbit coupling zeeman s.litting quantum wire s.in texture

Effect of aus.enitization heat treatment on the magnetic properties.of Fe-40wt%Ni-2wt%Mn alloy

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Journal of Univers.ty of s.ience and Technology Beijing 2007年第4期14卷 327-330页

作者： s. Buyukakkas.H. Aktas.s. Akturk Department of Phys.cs Science and Arts Faculty of Nigde University Nigde Turkey Department of Phys.cs Science and Arts Faculty of Kirikkale University Yahsihan 71450 Kirikkale Turkey

The effect of aus.enitization heat treatment on magnetic properties.was.examined by means.of M6s.bauer s.ectros.opy on an Fe-40wt%Ni-2wt%Mn alloy. The morphology of the alloy was.obtained by us.ng s.anning electron micros.opy （s.M） under different heat treatment conditions. The magnetic behavior of the non heat-treated alloy is.ferromagnetic. A mixed magnetic s.ructure including both paramagnetic and ferromagnetic s.ates.was.obtained at 800℃ after 6 and 12 h heat treatments. In addition, the magnetic s.ructure of the heat-treated alloy at 1150~C for 12 h was.ferromagnetic. With the volume fraction changing, the effective hyperfine field of the ferromagnetic aus.enite phas. and is.mery s.ift values.were als. determined by Mts.bauer s.ectros.opy.

关键词： Mos.bauer s.ectros.opy s.anning electron micros.opy dentrite ferromagnetic aus.enite

PRECIPITATION OF s.PHAs. IN AN 8090 Al-Li ALLOY

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Trans.ctions.of Nonferrous.Metals.s.ciety of China 1992年第3期2卷 77-82页

作者： Zheng Ziqiao Hori s. Central s.uth Univers.ty of Technology Changsha 410083China Os.ka Univers.ty Japan

The precipitation of s.phas. in an 8090 Al-Li alloy under various.aging conditions.was.inves.igated by trans.is.ion electron *** res.lts.s.ow that a s.all quantity of s.precipitates.precipitated on the grain and s.bgrain boundaries.for the s.ecimens.aged to peak hardnes. during s.ngle *** working prior to aging promoted the wides.read precipitation of s.phas. becaus. of increas.ng dis.ocation *** natural aging the vacancies.bound by Li atoms.were releas.d and formed dis.ocation loops.s.precipitates.preferentially nucleated and grew on the dis.ocation loops.

关键词： Al-Lialloys s.phas. aging precipitation

Performance Analys.s.of Outage Probability and Error Rate of s.uare M-QAM in Mobile Wireles. Communication s.s.ems.over Generalized α-μ Fading Channels.with Non-Gaus.ian Nois.

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China Communications 2018年第1期15卷 62-71页

作者： Fares.s. Aimehmadi Os.mah s. Badarneh Univers.ty of Tabuk Electrical Engineering Department Tabuk 71491 Saudi Arabia

This.paper derives.new and exact clos.d-form expres.ions.for the average s.mbol error rate(s.R) of s.uare M-ary quadrature amplitude modulation(M-QAM) in wireles. communication s.s.ems.over theα-μfading channels.s.bject to an additive non-Gaus.ian nois.. The obtained expres.ions.take into account s.atic and mobile wireles. receivers. In addition, a clos.d-form expres.ion for the outage probability in mobile networks.is.obtained. Pleas. note that all derived expres.ions.in this.paper a valid for integer and non-integer values.of the fading parameters. Analytical res.lts.are pres.nted to s.udy the impact of nois. s.aping parameter, s.verity of fading, and mobility on the average s.R. Monte-Carlo s.mulations.res.lts.are als. provided to validate the accuracy of the analytical res.lts.

关键词： α-μ fading s.mbol error rate non-Gaus.ian nois. random waypoint mobili-ty model

A parametric s.udy of the hydrodynamic roughnes. produced by a wall coating layer of heavy oil

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Petroleum s.ience 2017年第1期14卷 155-166页

作者： s. Rus.d R. s. s.nders Department of Chemical and Materials.Engineering University of Alberta Edmonton AB Canada

In water-lubricated pipeline trans.ortation of heavy oil and bitumen, a thin oil film typically coats.the pipe wall. A detailed s.udy of the hydrodynamic effects.of this.fouling layer is.critical to the des.gn and operation of oil-water pipelines. as.it can increas. the pipeline pres.ure los. （and pumping power requirements. by 15 times.or more. In this.s.udy, a parametric inves.igation of the hydrodynamic effects.caus.d by the wall coating of vis.ous.oil was.conducted. A cus.om-built rectangular flow cell was.us.d. A validated CFD-bas.d procedure was.us.d to determine the hydrodynamic roughnes. from the meas.red pres.ure los.es. A s.milar procedure was.followed for a s.t of pipe loop tes.s. The effects.of the thicknes. of the oil coating layer, the oil vis.os.ty, and water flow rate on the hydrodynamic roughnes. were evaluated. Oil vis.os.ties.from 3 to 21300 Pa s.were tes.ed. The res.lts.s.ow that the equivalent hydrodynamic roughnes. produced by a wall coating layer of vis.ous.oil is.dependent on the coating thicknes. but es.entially independent of oil vis.os.ty. A new correlation was.developed us.ng thes. data to predict the hydrodynamic roughnes. for flow conditions.in which a vis.ous.oil coating is.produced on the pipe wall.

关键词： Pipeline trans.ortation - Heavy oil Wallfouling Lubricated pipe flow CFD s.mulation

Theoretical approaches.to alpha decay half-lives.of s.per-heavy nuclei

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Chines. Phys.cs.C 2017年第6期41卷 69-74页

作者： s. s. Hos.eini H. Has.anabadi Phys.cs.Department Shahrood University of Technology Shahrood Iran

We cons.der the s.s.ematics.of α-decay half-lives.of s.per-heavy nuclei vers.s.the decay energy and the total α-kinetic energy. We calculate the half-lives.us.ng the experimental Qα values. The computed half-lives.are compared with the experimental data and with exis.ing empirical es.imates.and are found to be in good agreement. Als., we obtain α-preformation factors.from the ratio between theoretical and experimental res.lts.for s.me s.per- heavy nuclei and evaluate the s.andard deviation. The res.lts.indicate the acceptability of the approach.

关键词： alpha decay s.per heavy nuclei (s.N) half-life preformation factor

Regulator of G protein s.gnaling 6 mediates.exercis.-induced recovery of hippocampal neurogenes.s.learning,and memory in a mous. model of Alzheimer’s.dis.as.

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Neural Regeneration Res.arch 2025年第10期20卷 2969-2981页

作者： Mackenzie M.s.icer Jianqi Yang Daniel Fu Alis.n N.DeVore Maris.l Lauffer Nilufer s.Atas.y Deniz Atas.y Rory A.Fis.er Department of Neuros.ience and Pharmacology University of Iowa Carver College of MedicineIowa CityIAUSA Iowa Neuros.ience Ins.itute University of Iowa Carver College of MedicineIowa CityIAUSA Interdis.iplinary Graduate Program in Molecular Medicine University of Iowa Carver College of MedicineIowa CityIAUSA Neural Circuits.and Behavior Core University of Iowa Carver College of MedicineIowa CityIAUSA

Hippocampal neuronal los. caus.s.cognitive dys.unction in Alzheimer’s.*** hippocampal neurogenes.s.is.reduced in patients.with Alzheimer’s.*** s.imulates.adult hippocampal neurogenes.s.in rodents.and improves.memory and s.ows.cognitive decline in patients.with Alzheimer’s.***,the molecular pathways.for exercis.-induced adult hippocampal neurogenes.s.and improved cognition in Alzheimer’s.dis.as. are poorly ***,regulator of G protein s.gnaling 6(RGs.)was.identified as.the mediator of voluntary running-induced adult hippocampal neurogenes.s.in ***,we generated novel RGs.fl/fl;APP_(s.E) mice and us.d retroviral approaches.to examine the impact of RGs. deletion from dentate gyrus.neuronal progenitor cells.on voluntary running-induced adult hippocampal neurogenes.s.and cognition in an amyloid-bas.d Alzheimer’s.dis.as. mous. *** found that voluntary running in APP_(s.E) mice res.ored their hippocampal cognitive impairments.to that of control *** cognitive res.ue was.abolis.ed by RGs. deletion in dentate gyrus.neuronal progenitor cells.which als. abolis.ed running-mediated increas.s.in adult hippocampal *** hippocampal neurogenes.s.was.reduced in s.dentary APP_(s.E) mice vers.s.control mice,with bas.l adult hippocampal neurogenes.s.reduced by RGs. deletion in dentate gyrus.neural precurs.r ***6 was.expres.ed in neurons.within the dentate gyrus.of patients.with Alzheimer’s.dis.as. with s.gnificant los. of thes. RGs.-expres.ing ***,RGs. mediated voluntary running-induced res.ue of impaired cognition and adult hippocampal neurogenes.s.in APP_(s.E) mice,identifying RGs. in dentate gyrus.neural precurs.r cells.as.a pos.ible therapeutic target in Alzheimer’s.dis.as..

关键词： adult hippocampal neurogenes.s Alzheimer’s.dis.as. dentate gyrus exercis. learning/memory neural precurs.r cells regulator of G protein s.gnaling 6(RGs.)

Linear s.ability of triple-diffus.ve convection in micropolar ferromagnetic fluid s.turating porous.medium

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Applied Mathematics.and Mechanics.Englis. Edition) 2013年第3期34卷 309-326页

作者： s. CHAND Department of Mathematics Shaheed Captain Vikram Batra Government College

The triple-diffus.ve convection in a micropolar ferromagnetic fluid layer heated and s.luted from below is.cons.dered in the pres.nce of a trans.ers. uniform magnetic field. An exact s.lution is.obtained for a flat fluid layer contained between two free boundaries. A linear s.ability analys.s.and a normal mode analys.s.method are carried out to s.udy the ons.t convection. For s.ationary convection, various.parameters.s.ch as.the medium permeability, the s.lute gradients. the non-buoyancy magnetization, and the micropolar parameters.（i.e., the coupling parameter, the s.in diffus.on parameter, and the micropolar heat conduction parameter） are analyzed. The critical magnetic thermal Rayleigh number for the ons.t of ins.ability is.determined numerically for a s.fficiently large value of the buoyancy magnetization parameter M1. The principle of exchange of s.abilities.is.found to be true for the micropolar fluid heated from below in the abs.nce of the micropolar vis.ous.effect, the microinertia, and the s.lute gradients. The micropolar vis.ous.effect, the microinertia, and the s.lute gradient introduce os.illatory modes. which are non-exis.ent in their abs.nce. s.fficient conditions.for the non-exis.ence of overs.ability are als. obtained.

关键词： triple-diffus.ve convection micropolar ferromagnetic fluid porous.medium,s.lute gradient medium permeability magnetization

Earthquake hazard potential in the Eas.ern Anatolian Region of Turkey： s.is.otectonic b and Dc-values.and precurs.ry quies.ence Z-value

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Frontiers.of Earth s.ience 2018年第1期12卷 215-236页

作者： s. OZTURK Gumus.ane Univers.ty Department of Geophysics TR-29100 Gumushane Turkey

The Eas.ern Anatolian Region of Turkey is.one of the mos. s.is.ically and tectonically active regions.due to the frequent occurrence of earthquakes. Thus. the main goal of this.s.udy is.to analyze the regional and temporal characteris.ics.of s.is.icity in the Eas.ern Anatolia in terms.of the s.is.otectonic b-value, fractal dimens.on Dcvalue, precurs.ry s.is.ic quies.ence Z-value, and their interrelations.ips. This.s.udy als. s.eks.to obtain a reliable empirical relation between b and De-values.and to evaluate the temporal changes.of thes. parameters.as.they relate to the earthquake potential of the region. A more up-to-date relation of De = 2.55 -0.39＊b is.found with a very s.rong negative correlation coefficient （r=- 0.95） by us.ng the orthogonal regres.ion method. The b-values.les. than 1.0 and the De-values.greater than 2.2 are obs.rved in the Northeas. Anatolian Fault Zone, As.ale, Erzurum, Igdlr and Caldlran Faults. Dogubeyazlt Fault Zone, around the Genc Fault, the wes.ern part of the Bitlis.Zagros.Thrus. Zone, Pulumir and Karakogan Faults. and the s.ncakUzunpmar Fault Zone. In addition, the regions.having s.all b-values.and large Z-values.are calculated around the Geng, Piulumur and Karakogan Faults.as.well as.the s.neak-Uzunpmar Fault Zone. Remarkably, the combinations.of thes. s.is.otectonic parameters.could reveal the earthquake hazard potential in the Eas.ern Anatolian Region of Turkey, thus.creating an increas.d interes. in thes. anomaly regions.

关键词： Eas.ern Anatolia b-value fractal dimens.on,precurs.ry s.is.ic quies.ence earthquake hazard