نتایج جستجو برای: Electron transport

تعداد نتایج: 552832  

پایان نامه :دانشگاه بین المللی امام خمینی (ره) - قزوین - دانشکده علوم پایه 1392

in this thesis,spin dependend transport and electron transport through of ng/sg(graphene/ superconductor graphen) are studied in the junction of ng/fgt/sg. due to andreev reflection conductance increases in the presence of superconductor graphene.also, by applying a voltage gate on a superconductor, fermi level shifts and the conductance is independent of ferromagnatic substrate. also, the cond...

Journal: :iranian journal of radiation research 0
h. nedaie department of medical physics, tehran university of medical sciences, tehran, iran m. shariary department of nuclear engineering, shahid beheshti university, tehran, iran h. gharaati department of medical physics, tehran university of medical sciences, tehran, iran m. allahverdi department of medical physics, tehran university of medical sciences, tehran, iran m.a. mosleh-shirazi joint department of physics, royal marsden hospital and institute of cancer research, surrey, uk

abstract background: accurate methods of radiation therapy dose calculation. there are different monte carlo codesfor simulation of photons, electrons and the coupled transport of electrons and photons. mcnpis a general purpose monte carlo code that can be used for electron, photon and coupledphoton-electron transport.monte carlo simulation of radiation transport is considered to be one of the ...

Journal: :iranian journal of science and technology (sciences) 2007
j. raheb

electron transport system (ets) activity was found to be related to the initial inoculum size,culturability and viability of e. coli. in this experiment, ets activity of flexibacter chinensis was measuredby int-method under a variety of conditions such as starvation media with different amendments anddifferent temperatures. the relation between ets activity, cell culturability, and viability wa...

Journal: :journal of nanostructures 2012
m. malekshahi byranvand a. nemati kharat a. r. badiei

the dye-sensitized solar cells (dssc) have been regarded as one of the most promising new generation solar cells. tremendous research efforts have been invested to improve the efficiency of solar energy conversion which is generally determined by the light harvesting efficiency, electron injection efficiency and undesirable electron lifetime. in this review, various characteristics of dye-sensi...

Journal: :the modares journal of electrical engineering 2006
kamyar - saghafi mohammad kazeme moravvej-farshi vahid ahmadi

in this paper, we examine the effect of the energy difference between the l- and the -valleys in compound semiconductor materials, carrier effective mass, and the scattering processes on the electron transport characteristics in mesfets. to do this, we use the monte carlo simulation to demonstrate the superiority of the ingaas mesfet, made on a semi-insulating inp substrate, over both inp and ...

H. Gharaati, H. Nedaie, M. Allahverdi, M. Shariary, M.A. Mosleh-Shirazi,

ABSTRACT Background: accurate methods of radiation therapy dose calculation. There are different Monte Carlo codesfor simulation of photons, electrons and the coupled transport of electrons and photons. MCNPis a general purpose Monte Carlo code that can be used for electron, photon and coupledphoton-electron transport.Monte Carlo simulation of radiation transport is considered to be one of the ...

Owing amongst other to its high electron mobility, fullerene C70, has been widely used as an electron transporting layer in organic solar cells. In this research, we report the use of C70 thin films as electron transport layers of planar perovskite solar cells (PSCs) using a conventional device structure. The thickness of the C70 layer has been optimized to achieve the best efficiency of 12%. I...

Journal: :international journal of nano dimension 0
h. rasooli s. department of electrical engineering, college of technical& engineering, tabriz branch , islamic azad university, tabriz , iran. s. zabihi department of electrical engineering, college of technical& engineering, tabriz branch , islamic azad university, tabriz , iran. s. k. seyyedi s. department of electrical engineering, college of technical& engineering, tabriz branch , islamic azad university, tabriz , iran.

the electronic conductance at zero temperature through a quantum wire with side-connected asymmetric quantum ring (as a scatter system) is theoretically studied using the non-interacting hamiltonian anderson tunneling method. in this paper we concentrate on the configuration of the quantum dot rings. we show that the asymmetric structure of qd-scatter system strongly influences the amplitude an...

Journal: :Reactome - a curated knowledgebase of biological pathways 2006

Journal: :Journal of Biological Chemistry 1973

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