نتایج جستجو برای: charge

تعداد نتایج: 141917  

ابراهیم رستم‌آبادی, , شعبان‌رضا قربانی, ,

Polycrystalline samples of Y1-2xCaxThxBa2Cu3O7-δ (with 0.00 ≤x ≤ 0.075) and NdBa2-xLaxCu3O7-δ (with 0.0≤x≤ 0.30) were prepared by the standard solid state method. The transport and superconducting properties have been studied by the resistivity measurements as a function of temperature and doping concentration. Data of resistivity as a function of temperature was analyzed in terms of the bipola...

In this paper, we have obtained and presented new relativistic stellar configurations considering an anisotropic fluid distribution with a charge distribution and a gravitational potential Z(x) that depends on an adjustable parameter. The quadratic equation of state based on Feroze and Siddiqui viewpoint is used for the matter distribution. The new solutions can be written in terms of elementar...

Gholarn Hossein Shafiee Hadi Shafice Jamshid Najafpour Seyed Abdolreza Sadjadi

It seems that the general applicability of the quantum theory of atoms in molecules (QTAIM) oncharacterizing the bonded interactions is still questionable even afier 30 years since its formulation. Fordemonstrating the generality of bonding schemes in QTA IM, ea( isomers were chosen as the modelsystems and the results from molecular charge density analysis and vibrational normal modes werecompa...

Journal: :journal of sciences, islamic republic of iran 2012
e. ghanbari-adivi

an analytical treatment of the electron screening effect within an active-electron model is given for positronium formation from helium atoms. a first-order distorted wave approximation with correct boundary conditions is applied to evaluate the transition amplitude. in the range of impact energy for which the introduced perturbative approach is valid, both the total and differential cross sect...

Journal: :iranian journal of pharmacology and therapeutics 0
mohammad bagher shiran manijeh motevalian rezvan ravanfar shahab bohlooli

it is over several decades that ultrasound is used to enhance the transdermal drug delivery (phonphoresis). the mechanism of the enhancement is not fully understood and the ability of ultrasound on the enhancement for some drugs is unclear. the effect of continuous wave 870 khz ultrasound at intensity of 1 w/cm 2 for 15 minutes on transdermal absorption of piroxicam from solution and gel formul...

Journal: :مطالعات حقوق خصوصی 0
سیامک ره پیک استاد گروه حقوق خصوصی دانشکدۀ حقوق دانشگاه علوم قضایی و خدمات اداری تهران سیدمرتضی قاسم زاده استاد گروه حقوق خصوصی دانشکدۀ حقوق دانشگاه علوم قضایی و خدمات اداری تهران هادی شعبانی کندسری دانشجوی دکتری حقوق خصوصی دانشکدۀ حقوق و علوم سیاسی دانشگاه تهران

purpose of doing this research is scrutinizing the possibility of charging the circulating assets of debtors, which is done through comparative study of floating charge in common law with the accent on the jurisprudence and legal bases of our country. in this research the question was: “what are the features, regulations and consequences of floating charge in english law?” “is there possibility...

Journal: :international journal of electrical and electronics engineering 0
shaghayegh nikzad department of energy engineering and physics, amirkabir university of technology (tehran polytechnic), hafez avenue, tehran, iran houshyar noshad amirkabir university of technology

electrostatic potential as well as the local volume charge density are computed for a macromolecule by solving the poisson-boltzmann equation (pbe) using the finite element method (fem). as a verification, our numerical results for a one dimensional pbe, which corresponds to an infinite-length macromolecule, are compared with the existing analytical solution and good agreement is found. as a ma...

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