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Chinese Physics B 2013年第3期22卷 57-62页

作者： Reda g.Abdel-Rahman m.m.Khader Ahmed m.megahed Department of mathematics Faculty of ScienceBenha University

The Lie group method is applied to present an analysis of the magneto hydro-dynamics（mHD） steady laminar flow and the heat transfer from a warm laminar liquid flow to a melting moving surface in the presence of thermal *** using the Lie group method,we have presented the transformation groups for the problem apart from the scaling *** application of this method reduces the partial differential equations（PDEs） with their boundary conditions governing the flow and heat transfer to a system of nonlinear ordinary differential equations（ODEs） with appropriate boundary *** resulting nonlinear system of ODEs is solved numerically using the implicit finite difference method（FDm）.The local skin-friction coefficients and the local Nusselt numbers for different physical parameters are presented in a table.

关键词： Lie group method magneto hydro-dynamics melting phenomenon Newtonian fluid radiation

Quantum phase distribution and the number-phase Wigner function of the generalized squeezed vacuum states associated with solvable quantum systems

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Chinese Physics B 2012年第5期21卷 265-273页

作者： g.R.Honarasa m.K.Tavassoly m.Hatami Department of Physics Faculty of ScienceShiraz University of Technology Atomic and molecular group Faculty of PhysicsYazd University

The quantum phase properties of the generalized squeezed vacuum states associated with solvable quantum systems are studied by using the Pegg-Barnett ***,two nonclassical features,i.e.,squeezing in the number and phase operators,as well as the number-phase Wigner function of the generalized squeezed states are *** to some actual physical situations,the present approach is applied to two classes of generalized squeezed states：solvable quantum systems with discrete spectra and nonlinear squeezed states with particular nonlinear ***,the time evolution of the nonclassical properties of the considered systems has been numerically investigated.

关键词： squeezed vacuum states solvable quantum systems phase distribution number phaseWigner function

Effect of Impeller geometry and Tongue Shape on the Flow Field of Cross Flow Fans

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Journal of Thermal Science 2003年第2期12卷 118-125页

作者： m.govardhan g.Venkateswarlu Department of mechanical Engineering Indian Institute of Technology MadrasChennai 600 036IndiaDepartment of Mechanical EngineeringIndian Institute of Technology MadrasChennai 600 036India

Experiments were conducted to investigate the effect of impeller geometry and tongue shape on the flow field of cross flow *** impellers(Ⅰ，Ⅱ，Ⅲ）having same outer diameter,but different radius ratio and blade angles were employed for the *** impeller was tested with two tongue *** survey was carried out for each impeller and tongue shape at two flow *** for each flow coefficient at different circumferential *** flow is two-dimensional along the blade span except near the *** total pressure developed by the impellers in each case is found to be maximum at a circumferential position of around 270°.The total and static pressures at the inlet of impellers are more or less same regardless of impeller and tongue geometry,but they vary considerably at exit of the *** Ⅲ with tongue T2 develops higher total pressure and efficiency where as impeller Ⅱ with tongue T2 develops minimum total *** diffusion and smaller vortex size are the reasons for better performance of impeller Ⅲwith tongue T2。

关键词： Impeller tongue circumferential position flow coefficient eccentric vortex total pressure coefficient static pressure coefficient.

Assessment of mercury(II) bioavailability using a bioluminescent bacterial biosensor: Practical and theoretical challenges

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Journal of Environmental Sciences 2010年第8期22卷 1137-1143页

作者： Paulo R g Barrocas William m Landing Robert J m Hudson Department of Sanitation and Environmental Health National School of Public Health Oswaldo Cruz Foundation Department of Oceanography Florida State University. Tallahassee Department of Natural Resources and Environmental Sciences University of Illinois

Critical methodological challenges in the microbial biosensor approach to assessing Hg（II） bioavailability were evaluated from the perspective of analytical chemists. The main challenge stems from the fact that the chemical speciation of Hg（II） in natural waters exerts a major control on its bioavailability, yet its natural complexation equilibria are extensively altered during conventional bioassays. New data, obtained using a bioluminescent Hg（II）-biosensor, that illustrate these challenges are presented and potential solutions proposed.

关键词： mercury bioavailability biosensor chemical speciation bioluminescent

The Relationship Between Developmental Accumulation of Leaf Soluble Proteins and Vernalization Response of Wheat(Triticum aestivum ***. Thell)

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Agricultural Sciences in China 2009年第4期8卷 410-417页

作者： m majdi g Karimzadeh S mahfoozi Plant Breeding and Biotechnology Department Faculty of AgricultureTarbiat Modares UniversityP.O.Box 14115-336Tehran ***Iran Physiology-Agronomy Unit of Department of Cereals Research Seed and Plant Improvement InstituteKaraj 315854119Iran

The relationship between vernalization requirement and quantitative and qualitative changes in total leaf soluble proteins were determined in one spring （cv. Kohdasht） and two winter （cvs. Sardari and Norstar） cultivars of wheat （Triticum aestivum L.） exposed to 4℃. Plants were sampled on days 2, 14, 21 and 35 of exposure to 4℃. The final leaf number （FLN） was determined throughout the vernalization periods （0, 7, 14, 24, and 35 d） at 4℃. The final leaf number decreased until days 24 and 35 in Sardari and Norstar eultivars, respectively, indicating the vernalization saturation at these times. No clear changes were detected in the final leaf number of Kohdash cultivar, verifying no vernalization requirement for this spring wheat cultivar. Comparing with control, clear cold-induced 2-fold increases in proteins quantity occurred after 48 h following the 4℃-treatment in the leaves of the both winter wheat cultivars but, such response was not detected in the spring cultivar. However, the electrophoretic protein patterns showed between-cultivar and between-temperature treatment differences. With increasing exposure time to 4℃, the winter cultivars tended to produce more HmW polypeptides than the spring cultivar. Similar proteins were induced in both Sardari and Norstar winter wheat cultivars, however, the long vernalization requirement in Norstar resulted in high level and longer duration of expression of cold-induced proteins compared to Sardari with a short vernalization requirement. These observations indicate that vernalization response regulates the expression of low temperature （LT） tolerance proteins and determines the duration of expression of LT- induced proteins.

关键词： soluble proteins wheat Triticum aestivum L. final leaf number vernalization cold

NUmERICAL SOLUTION OF THE SINgULARLY PERTURBED PROBLEm WITH NONLOCAL BOUNDARY CONDITION

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Applied mathematics and mechanics(English Edition) 2002年第7期23卷 755-764页

作者： g.m.Amiraliyev musa CakDr Department of mathematics Y Y University65080 VanTurkey Communicated by HE Ji-huan Original Member of Editorial CommitteeAMM

Singularly perturbed boundary value problem with nonlocal conditions is examined. The appopriate solution exhibits boundary layer behavior for small positive values of the perturbative parameter. An exponentially fitted finite difference scheme on a non-equidistant mesh is constructed for solving this problem. The uniform convergence analysis in small parameter is given. Numerical example is provided, too.

关键词： exponentially fitted difference scheme singular perturbation nonlocal boundary condition

Structure of Interphase Boundaries in Bimetallic Thin Films

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Journal of materials Science & Technology 2001年第1期17卷 59-60页

作者： m.D.Starostenkov g.m.Poletayev D.m.Starostenkov general Physics Department Altai State Technical UniversityBarnaulRussia

The structural transformation in thin films of bimetals in the dependence on temperature and concentration of vacancies was investigated. The system Ni-Al structural transformation was realized by computer design according to the mechanism of self-sustained high(temperature synthesis. Structural transformation is characterized by the presence of dislocations, clusters of point defects and germs of intermetallic phases near interphase boundaries.

关键词： structural transformation intermetallic phases thin films

Synthesis of mesostructured thin films by ionic wind assisted electrostatic spray deposition

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Particuology 2016年第4期14卷 128-132页

作者： S. Khodadadi g.m.H. meesters g. Biskos Faculty of Applied Sciences Delft University of Technology Delft 2628-BL Netherlands Faculty of Civil Engineering and geosciences Delft University of Technology Delft 2628-CN Netherlands Energy Environment and Water Research Center The Cyprus Institute Hicosia 2121 Cyprus

Thin films produced by electrostatic spray deposition （ESD） have nanometer-sized structures despite the initial sprayed droplets being typically a few tens of microns in diameter. The size and morphology of the resulting structures is not only affected by the solvent properties and drying kinetics, hut also by Coulomb fission owing to the high surface charge density that the droplets build up upon evaporation. In this work we modulate the charge density of the droplets by inducing ionic wind along the spray, and produce mesoscopic structures. Using WO3 as an example, we show that the technique provides a practical way to control the morphology of thin films produced by ESD.

关键词： Electrohydrodynamic atomization Electrospray Aerosol Tungsten oxide Porous thin film

Fragmentation 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 Department of Physics University of the Punjab Lahore Pakistan

We investigate the fragmentation cross sections of 158 AgeV ^207Pb projectile interacting with different targets using CR39 nuclear track detectors. The exposure is made at SPS beam facility of CERN. The detectors are chemically etched to obtain data in the form of etched cone length. The nuclear and electromagnetic contributions to the measured total charge-changing cross sections are investigated. The estimated results are compared with those found in the literature for similar research work.

关键词： coated conductor buffer layer self-epitaxy CeO2

Which psychosocial factors are associated with return to sport following concussion? A systematic review

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Journal of Sport and Health Science 2022年第4期11卷 438-449页

作者： Jacqueline van Ierssel Kaleigh Ferdinand Pennock margaret Sampson Roger Zemek Jeffrey g.Caron Children’s Hospital of Eastern Ontario Research Institute OttawaON K1H 8L1Canada Faculty of Kinesiology and Physical Education University of TorontoTorontoON M5S 2W6Canada Department of Pediatrics Faculty of MedicineUniversity of OttawaOttawaON K1H 8M5Canada Faculty of medicine University of MontrealMontrealQC H3T 1J4Canada Center for Interdisciplinary Research in Rehabilitation MontrealQC H3S 1M9Canada

Background:Psycho social factors predict recurrent inj ury and return to preinjury level of performance following orthopedic injury but are poorly understood following *** management protocols prioritize physical measures of ***,the objective of this study was to describe the psychosocial factors associated with return to sport(RTS) and how they are measured in athletes who sustained a ***:mEDLINE,Embase,APA PsycINFO,CINAHL,and SPORTDiscus were searched through February 2,*** studies included original peer-reviewed publications describing psychosocial factors associated with RTS following a diagnosed *** primary outcome was scales or measures employed and/or key thematic ***:Of the 3615 studies identified,10 quantitative cohort studies(Oxford Centre for Evidence-Based medicine Level-3) representing 2032 athletes(85% male;high-school and collegiate collision/contact athletes) and 4 qualitative studies representing 66 athletes(74% male;70% American football;aged 9-28 years) were *** identified 3 overarching themes and 10 outcome measures related to psychosocial factors associated with RTS following concussion:(a) fear(e.g,of recurrent concussion,of RTS,of losing playing status);(b) emotional factors(e.g,depression,anxiety,perceived stress,mental health,disturbance mood);and(c) contextual factors(e.g,social support,pressure,sense of identity).Conclusion:Although current medical clearance decisions prioritize physical measures of recovery,evidence suggests diverse psychosocial factors influence RTS following *** remains unclear which psychosocial factors contribute to a successful RTS,including the influence of sex/gender and *** studies should evaluate the association of psychological readiness with physical measures of recovery at medical clearance,preinjury level of performance,and risk of recurrent concussion to support RTS clinical decision-making.

关键词： Concussion Recovery Rehabilitation Sport psychology Sporting injuries