نتایج جستجو برای: Electron transport rate

تعداد نتایج: 1469885  

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 ...

Journal: :The Journal of biological chemistry 1963
D C WHITE

The rate of oxygen utilization by the electron transport system at low oxygen concentrations has been difficult to explain mechanistically (l-3). As in most enzymatic reactions the rate of oxygen utiliiation is independent of oxygen concentration when the oxygen concentration is high, but becomes dependent upon the oxygen concentration at some critical value of the oxygen tension. Chance (4) ha...

2003
DAVID C. WHITE

The rate of oxygen utilization by the electron transport system at low oxygen concentrations has been difficult to explain mechanistically (l-3). As in most enzymatic reactions the rate of oxygen utiliiation is independent of oxygen concentration when the oxygen concentration is high, but becomes dependent upon the oxygen concentration at some critical value of the oxygen tension. Chance (4) ha...

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 ...

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