نتایج جستجو برای: transition

تعداد نتایج: 262109  

Journal: :international journal of nanoscience and nanotechnology 2011
h. mohammadi kamrava m. barati

within the effective-field theory with correlations (eft), a transverse random field spin-1 ising model on the simple cubic (z=6) lattice is studied. the phase diagrams, the behavior of critical points, transverse magnetization,  internal energy, magnetic specific heat are obtained numerically and discussed for different values of p the concentration of the random transverse field.

Journal: :international journal of iron & steel society of iran 2007
r. ebrahimi s. solhjoo

determination of critical points on hot stress-strain curve of metals is crucial in thermo-mechanical processes design. in this investigation a mathematical modeling is given to illustrate the behavior of metal during hot deformation processes such as hot rolling. the critical strain for the onset of dynamic recrystallization has been obtained as a function of strain at the maximum stress. in a...

Journal: :physical chemistry research 2013
mojtaba alipour

the one-third paradigm of pbe0 density functional, pbe0-1/3, has shown to be a successful method for various properties. in this paper, the applicability of pbe0-1/3 is put into broader perspective for transition metals chemistry. as a comparative study, the performance of pbe0 and pbe0-1/3 has been assessed for geometries and vibrational frequencies of some transition metal hydrides and transi...

Journal: :physical chemistry research 2013
davood ajloo sharbanoo ghalehagababaie najmeh mahmoodabadi

molecular dynamic simulation is a powerful method that monitors all variations in the atomic level in explicit solvent. by this method we can calculate many chemical and biochemical properties of large scale biological systems. in this work all-atom molecular dynamics simulation of polyalanine (pa) was investigated in the presence of 0.224, 0.448, 0.673, 0.897 and 1.122 m of guanidinium chlorid...

Journal: :علوم و تکنولوژی پلیمر 0
مهرزاد مرتضایی محمدحسین نویدفامیلی مهرداد کوکبی

the preparation and characterization of the vinyltriethoxysilane-modified silica nanoparticles were investigated. also the surface tension of polystyrene, native (hydrophilic) silica and silane-modified (hydrophobic) silica were determined. two kinds of polystyrene/silica (treated and non-treated) nanocomposites were prepared with different filler loadings by solution method. their viscoelastic...

Journal: :physical chemistry research 0
leila separdar department of physics, college of sciences, shiraz university, shiraz 71454, iran saeid davatolhagh department of physics, college of sciences, shiraz university, shiraz 71454, iran

molecular dynamics simulation has been performed to analyze the effect of the presence of gold nanoparticle on dynamics of kob-anderson binary lennard-jones (blj) mixture upon supercooling within the framework of the mode coupling theory of the dynamic glass transition. the presence of gold nanoparticle has a direct effect on the liquid structure and causes the peaks of the radial distribution ...

Extensive wind tunnel tests are conducted to evaluate surface pressure distribution of a semi span swept wing. The wing section has a laminar flow airfoil similar to NACA 6-series airfoils. The investigations are conducted at various speeds and angles of attack. Surface pressure distribution over the wing upper surface is measured for both chordwise and spanwise sections. Statistical analyses a...

Journal: :international journal of architecture and urban development 2012
somayeh ebrahimi seyed gholamreza islami

technology affected human life in many ways in different eras of mankind history. today, the information and telecommunication technology has revolutionized basic structures of human life. changes are from the whole to the parts and vice versa, which include family and society too. family lost its former structure in the information age and differentiated from patriarchy family. societies have ...

Journal: :international journal of architecture and urban development 0
somayeh ebrahimi seyed gholamreza islami

technology affected human life in many ways in different eras of mankind history. today, the information and telecommunication technology has revolutionized basic structures of human life. changes are from the whole to the parts and vice versa, which include family and society too. family lost its former structure in the information age and differentiated from patriarchy family. societies have ...

In this paper, a SIW horn antenna is designed using Luneburg lens in order to enhance the gain. Using a transition printed on the same substrate, both the matching performance and the front to back ratio was improved. In addition, this transition structure allows the antenna to be planar. The proposed antenna operates at 14.5 GHz and can be used for Ku band application.An antenna prototype was ...

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