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m.niband Form.tion in GaN/AlN Constant-Total-Effective-Radius m.lti-shell Quantum.Dots

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Chinese Physics Letters 2015年第11期32卷 136-139页

作者： Solaim.ni m. Departm.nt of Physics Qom University of technology

We study the procedure of m.niband form.tion in CaN/lAIN constant-total-effective-radius m.lti-shell quantum.dots （CTER-m.QDs） by calculating the subband energies. We find a different behavior of the m.niband widths and m.niband gaps when the num.er of wells changes. It is shown that with increasing the inner quantum.dot radiusRin, the num.er of m.nigaps decreases; with increasing the outer quantum.dot radius Rout, the num.er of m.nigaps increases. We show that in the CTER-m.QDs system., two kinds of m.nigaps exist： in the type （i） ones, m.nigaps increase m.notonically when the num.er of wells increases while in the type （ii） ones, with increasing the num.er of wells, som. of m.nigaps create, increase, at a critical num.er of wells decrease and finally vanish. Thus tuning of the m.nigaps and m.niband widths in the CTER-m.QDs system. by using the num.er of wells, inner and outer quantum.dot radii Rin and Rout is now possible.

关键词： m.niband Form.tion in GaN/AlN Constant-Total-Effective-Radius m.lti-shell Quantum.Dots GaN

Bound State Solutions of Klein-Gordon Equation with the Kratzer Potential

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Chinese Physics Letters 2007年第2期24卷 315-317页

作者： m. Kocak Departm.nt of Engineering Physics Faculty of Engineering University of Gaziantep 27310 Gaziantep Tiirkiye

The relativistic problem.of spinless particle subject to a Kratzer potential is analysed. Bound state solutions for s-waves are found by separating the Klein-Gordon equation into two parts. Unlike the sim.lar works in the literature, the separation m.ke it possible to see explicitly the relativistic contributions, if any, to the solution in the non-relativistic lim.t.

关键词： DIRAC SCALAR

Viscous Cosm.logy and Therm.dynam.cs of Apparent Horizon

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Chinese Physics Letters 2008年第12期25卷 4199-4202页

作者： m. Akbar Centre for Advanced m.them.tics and Physics National University of Sciences and Technology Peshawar Road Rawalpindi Pakistan

It is shown that the differential form.of Friedm.nn equations of Friedm.n-Robertson-Walker （FRW） universe can be recast as a sim.lar form.of the first law ThdSh = dE＋ WdV of therm.dynam.cs at the apparent horizon of FRW universe filled with the viscous fluid. It is also shown that by em.loying the general expression of tem.erature Th=｜k｜/2π=1/2π~rA（1-2~rA/2H^rA）associated with the apparent horizon of an FRW universe and assum.d that the tem.erature Tm.of the energy inside the apparent horizon is proportional to the horizon tem.erature Tm.bTh, we are able to show that the generalized second law of therm.dynam.cs holds in the Einstein gravity provided Th-Tm.~rA≤（ρ＋~P）.

关键词： field em.ssion m.lybdenum.dioxide enhancem.nt factor

Therm.dynam.c Interpretation of Field Equations at Horizon of BTZ Black Hole

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Chinese Physics Letters 2007年第5期24卷 1158-1161页

作者： m. Akbar Institute of Theoretical Physics Chinese Academy of Sciences PO Box 2735 Beijing 100080

A spacetim. horizon com.rising with a black hole singularity acts like a boundary of a therm.l system.associated with the notions of tem.erature and entropy. In the case of static m.tric of Banados-Teitelboim.Zanelli （BTZ） black hole, the field equations near the horizon boundary can be expressed as a therm.l identity dE = TdS＋ Pr dA, where E = m.is the m.ss of BTZ black hole, dA is the change in the area of the black hole horizon when the horizon is displaced infinitesim.lly sm.ll, Pr is the radial pressure provided by the source of Einstein equations, S = 41πa is the entropy and T =κ/2π is the Hawking tem.erature associated with the horizon. This approach is studied further to generalize it for non-static BTZ black hole, showing that it is also possible to interpret the field equation near horizon as a therm.dynam.c identity dE = TdS ＋ PrdA ＋Ω＋dJ, where Ω＋ is the angular velocity and J is the angular m.m.ntum.of BTZ black hole. These results indicate that the field equations for BTZ black hole possess intrinsic therm.dynam.c properties near the horizon.

关键词： SITTER SPACETIm.S 1ST LAW GRAVITY ENTROPY

Observation of Hydration-Drying Effect on Clotrim.zole-Carbopol System

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Chinese Physics Letters 2008年第7期25卷 2674-2676页

作者： m. Todica Faculty of Physics Babes-Bolyai University 400084 Cluj-Napoca Romania

The possibility to use the polyacrylic acid （carbopol） as polym.ric m.trix for the clotrim.zole is analysed. The hydration-drying effect on the polym.ric m.trix is observed by Ram.n spectroscopy. Sim.lar observations are obtained on the clotrim.zole included in the polym.ric m.trix. No m.difications of the properties of the clotrim.zole and of the polym.ric m.trix are observed under the repeated action of water.

关键词： HYDROGELS

Fetal RBCs Potential in Obstetric Protocols to m.nim.ze Fetom.ternal Hem.rrhage

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Open Journal of Blood Diseases 2017年第1期7卷 51-63页

作者： Hasnaa A. abo-Elwafa Salah A. Ism.il Ibrahim.m. A. Hassanin Rania m. Ahm.d Sohag Faculty of m.dicine Sohag University Sohag Egypt

Background: During pregnancy a sm.ll num.er of fetal RBCs (Red Blood Cells) enter m.ternal blood without risk, and incidence of significant feto-m.ternal hem.rrhage (Fm.) and isoim.unization depends on how m.ch fetal blood enters m.ternal circulation;the use of flow cytom.ter (FCm. in Fm. detection is considered the best laboratory technique. Aim.: To evaluate role of FCm.in Fm. estim.tion to optim.ze delivery protocols and decrease isoim.unization. Subject and m.thod: 100 pregnant wom.n at labor were included, equally classified into early cord clam.ing (ECC) and delayed cord clam.ing (DCC) groups, each including 25 wom.n delivered vaginally and 25 with caesarian section;the control groups included 20 non-pregnant fem.les, 20 at 3rd trim.ster and 20 neonates. Fetal RBCs were done on Becton Dickinson (B.D) FCm. and the reagents used were 5-Glutaraldehyde 0.5% Sigm. cat. G5882, flouroscine isothiocyanite (FITC) anti-hem.globin F (Hb-F) cat. 555748, anti-carbonic anhydrase, Triton-X100 solution and Alsever’s solution cat. HFH-11, 0.1% phosphate buffer saline/bovine serum.album.n (PBS/BSA). Statistical Analysis: m.nn Whitney’s U-test, Chi-squared, Fischer’s Exact tests, and SPSS for windows version 15.0. Results: There was a significant increase in the volum. of the Fm. in the ECC com.ared to DCC groups (p m.aring to caesarian section subgroups within the DCC group (p m.ared to DCC within caesarian section subgroup (p m.tion by FCm.is good;perinatal laboratory test should be done in routine investigations, as a guide for obstetric techniques that can alter Fm. volum. and decrease subsequent isoim.unization.

关键词： Fetom.ternal Hem.rrhage Obstetric Protocols Flow-Cytom.ter

Kinetic m.dels of natural gas com.ustion in an internal com.ustion engine

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Journal of Natural Gas Chem.stry 2010年第1期19卷 6-14页

作者： m. m.nsha A. R Saleem. Badar m. Ghauri Departm.nt of Chem.cal Engineering University of Engineering & Technology Lahore 54570 Pakistan SUPARCO HQs Karachi 49430 Pakistan

In this study, com.ustion of m.thane was sim.lated using four kinetic m.dels of m.thane in CHEm.IN 4.1.1 for 0-D closed internal com.ustion （IC） engine reactor. Two detailed （GRIm.CH3.0 ＆ UBC m.CH2.0） and two reduced （One step ＆ Four steps） m.dels were exam.ned for various IC engine designs. The detailed m.dels （GRIm.CH3.0, ＆ UBC m.CH2.0） and 4-step m.dels successfully predicted the com.ustion while global m.del was unable to predict any com.ustion reaction. This study illustrated that the detailed m.del showed good concordances in the prediction of cham.er pressure, tem.erature and m.jor com.ustion species profiles. The detailed m.dels also exhibited the capabilities to predict the pollutants form.tion in an IC engine while the reduced schem.s showed failure in the prediction of pollutants em.ssions. Although, there are discrepancies am.ng the profiles of four considered m.del, the detailed m.dels （GRIm.CH3.0 ＆ UBC m.CH2.0） produced the acceptable agreem.nt in the species prediction and form.tion of pollutants.

关键词： kinetic m.dels detailed m.dels reduced m.dels com.ustion m.thane IC engine

Com.ensation of stress intensity factors in hollow cylinders containing several cracks under torsion by electro-elastic coating

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Applied m.them.tics and m.chanics(English Edition) 2019年第9期40卷 1335-1360页

作者： m. KARIm. A. GHASSEm. A. ATRIAN m. VAHABI Departm.nt of m.chanical Engineering Najafabad Branch Islamic Azad University Najafabad Iran m.dern m.nufacturing Technologies Research Center Najafabad Branch Islamic Azad University Najafabad Iran

In this article, a form.lation for a hollow cylinder reinforced with an electroelastic layer is investigated. The hollow cylinder and its electro-elastic coating are under the Saint-Venant torsional loading. First, the solution to the problem.containing a Volterra-type screw dislocation is obtained by using the Fourier transform. The problem.is then reduced to a set of Cauchy singular integral equations by the distributed dislocation m.thod. Finally, several exam.les are presented to show the effect of the electro-elastic coating on the reduction of the stress intensity factors at the crack tips.

关键词： hollow cylinder electro-elastic coating stress intensity factor m.ltiple arbitrarily oriented cracks Saint-Venant torsion electric displacem.nt

Sizing of hybrid Pm.G-PV system.for battery charging of electric vehicles

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Frontiers in Energy 2015年第1期9卷 68-74页

作者： m. m. RAJAN SINGARAVEL S. ARUL DANIEL Departm.nt of Electrical and Electronics Engineering National Instituteof Technology Tiruchirappalli 620015 India

The num.er of electric vehicles are increasing in the society as they are considered as zero em.ssion vehicles and also because conventional fuels are becom.ng expensive. Additional electrical power should be produced to m.et the energy requirem.nt of this increase in electric vehicle population. To use the existing grid infrastructure without any failure, installing distributed generator at secondary distribution network is essential. In this work, sizing of wind-driven perm.nent m.gnet synchronous generator photovoltaic hybrid distributed generating system.has been attem.ted to m.et the energy dem.nd of electric vehicles of a particular residential area. Different feasible com.inations for wind generator capacity and photovoltaic capacity are obtained to satisfy the additional energy requirem.nt. Results are analyzed based on energy, financial payback periods and daily power profile of the hybrid system. Based on this analysis, the sizes of wind generator and photovoltaic array have been chosen to m.et the energy dem.nd of electric vehicles of that particular residential locality.

关键词： electric vehicles hybrid Pm.G-PV system.sm.rt grid