نتایج جستجو برای: carrier rate
تعداد نتایج: 1024006 فیلتر نتایج به سال:
In a group of 178 hospital nurses minor nasal abnormalities were found to be associated with an increased rate of nasal carriage of Staphylococcus aureus.
Introduction Familial Mediterranean fever (FMF) is an autosomalrecessive disorder characterized by recurrent attacks of fever and serositis common in eastern Mediterranean population. Over 160 mutations have been identified in MEFV gene responsible for FMF. The most common mutations in MEFV gene are E148Q, M694I, M694V, V726A and M680I. The distribution pattern of MEFV mutation along the Medite...
The growth rate and uniformity of Carbon Nano Tubes (CNTs) based on Chemical Vapor Deposition (CVD) technique is investigated by using a numerical model. In this reactor, inlet gas mixture, including xylene as carbon source and mixture of argon and hydrogen as carrier gas enters into a horizontal CVD reactor at atmospheric pressure. Based on the gas phase and surface reactions, released carbon...
Initially, psychometric functions were measured for the detection of amplitude modulation (AM) or frequency modulation (FM), using a two-alternative forced-choice (2AFC) task. Carrier frequencies were 125, 1000, and 6000 Hz, and modulation rates were 2, 5, and 10 Hz. For the two lower carrier frequencies, FM detection tended to be best at the lowest modulation rate while AM detection was best a...
In this work InGaN quantum dots (QDs) in GaN matrix formed during strain induced phase separation were investigated. We show that although electron – photon interaction rate in residual quantum well (QW) InGaN is high, carrier capture to QD levels and carrier escape from QD levels to the QW is slowed presumably due to large energy distance between the QD levels and between the QD levels and the...
chemical vapor deposition (cvd) is one of the most popular methods for producing carbon nanotubes (cnts). the growth rate of cnts based on cvd technique is investigated by using a numerical model based on finite volume method. inlet gas mixture, including xylene as carbon source and mixture of argon and hydrogen as carrier gas enters into a horizontal cvd reactor at atmospheric pressure. in thi...
We present new time-resolved measurements that demonstrate the effect of injected carrier densities on carrier–carrier scattering rates of highly nonequilibrium carrier distributions in the p-doped Al Ga As/GaAs quantum wells with well 0.32 0.68 10 22 width of 5 and 3 nm. The spectra at high densities ( $ 10 cm ) demonstrate that the initially narrow electron distribution is altered in a time l...
Plasmon-induced hot carrier formation is attracting an increasing research interest due to its potential for applications in photocatalysis, photodetection and solar energy harvesting. However, despite very significant experimental effort, a comprehensive theoretical description of the hot carrier generation process is still missing. In this work we develop a theoretical model for the plasmon-i...
AIM to determine the rate of MRSA-carrier among patients, family members and health care providers, and the association between MRSA-carrier family members and health care providers on MRSA infection patient after orthopaedic surgery. METHODS this is a cross-sectional analytical study. Samples were taken consecutively during December 2010 to December 2011, consisting of postoperative patients...
بررسی ارزش غذایی تاغ و عمل آوری آن با سود و آهک در مراحل مختلف رشدبا استفاده از روش کیسه های نایلونی
abstract this study is carried out to determine the chemical composition in the three vegetative stages of the haloxylon sp., degradation parameters, with adding naoh and ca(oh2 ). for this purpose, in may and october and january 2010 enough some haloxylon sp. of the ammary area was prepared. crude protein and ash percentage are decrease, neutral detergent fiber percentage with pragress stage ...
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