نتایج جستجو برای: 300 w
تعداد نتایج: 281786 فیلتر نتایج به سال:
In order to understand the effect of Pb-CuI co-doping on the thermoelectric performance 8 of Bi2Te3, n-type Bi2Te3 co-doped with x at% CuI and 1/2x at% Pb (x = 0, 0.01, 0.03, 0.05, 0.07, and 9 0.10) were prepared via high temperature solid state reaction and consolidated using spark plasma 10 sintering. Electron and thermal transport properties, i.e., electrical conductivity, carrier 11 concent...
در این پایان نامه در ابتدا ساختار لایه و ناخالصی یک لیزر مبتنی بر مواد inp/ingaasp و ساختار بالک را بررسی و تحلیل نموده ایم. در این ساختار لایه ingaasp به عنوان لایه فعال و لایه های inp با ناخالصی تدریجی به عنوان لایه های تحدید استفاده شدند. این لیزر درطول موج µm 55/1 تشعشع خواهد داشت. سپس بجای لایه فعال ingaasp از سه جفت لایه inp/ingaas چاه کوانتومی استفاده گردید. ساختار جدید نشان می دهد که مش...
The computer simulation program of a practical scale reverse electrodialysis process has been developed based on the program for saline water electrodialysis. The program is applied to compute the performance of an industrial-scale reverse electrodialysis stack (effective membrane area S = 1 m × 1 m = 1 m2, cell pair number N = 300 pairs). The stack operatingconditions are optimized. Seaw...
We present an Auger electron spectroscopy (AES) study of the adsorption of nitric oxide (NO) on a dean Si(100)2 × 1 surface at 300 and 550 K. Accurate measurements reveal wall resolved fine structure at Auger Si L2.3 w transitions at 62 and 83 eV. These peaks can be attributed to Si-O and Si-N bonds. Furthermore, it is argued that the broadening in the SiLi2,~W Auger transition at 83 eV at 300 ...
Block iterative methods are applied to hydrodynamic simulations of a one-dimensional (1-D) submicrometer semiconductor device. We show that block successive underrelaxation (SUR) converges with a fixed relaxation factor w = 0.13 for simulations at 300 K and w = 0.04 at 77 K . To demonstrate the robustness of the block iterative method, we present numerical simulations of a steady-state electron...
In order to understand the effect of Pb-CuI co-doping on the thermoelectric performance of Bi₂Te₃, n-type Bi₂Te₃ co-doped with x at % CuI and 1/2x at % Pb (x = 0, 0.01, 0.03, 0.05, 0.07, and 0.10) were prepared via high temperature solid state reaction and consolidated using spark plasma sintering. Electron and thermal transport properties, i.e., electrical conductivity, carrier concentration, ...
Recently several Higgsless models of electroweak symmetry breaking have been proposed in which unitarity of W,Z scattering amplitudes is partially restored through a tower of massive vector gauge bosons. These massive states are expected to couple mainly toW and Z and should appear as resonances in WW and WZ fusion at the CERN Large Hadron Collider (LHC). We study the LHC discovery reach for th...
[ll] J. H. McClellan, T. W. Parks, and L. R R a b i i , “A computer program for designing optimum FIR hear phase digital filters,” IEEE Trans. Audio Elccrroacoust.. vol. AU-21, pp. 506-526, Dec. 1973. [12] P. P. Vaidyanathaa and T. Q. Nguyen, “A trick, for the design of FIR half-band filters,” IEEE Tmns. Circuit Syst. [ W O Technol.1, pp. 297-300, Mar. 1987. [13] K. Nakayama and T. Mizukami, “A...
We report on a search for charged massive resonances decaying to top (t) and bottom (b) quarks in the full data set of proton-antiproton collisions at a center-of-mass energy of √[s]=1.96 TeV collected by the CDF II detector at the Tevatron, corresponding to an integrated luminosity of 9.5 fb(-1). No significant excess above the standard model background prediction is observed. We set 95% Bay...
OBJECTIVES To evaluate occurrence of adverse maternal and perinatal outcomes with different thresholds of proteinuria (300-499 mg and ≥500 mg/24 hours) in pre-eclamptic women, comparing outcomes against women with chronic and gestational hypertension. DESIGN Secondary analysis of the Vitamins in Pre-Eclampsia Trial. SETTING 25 UK hospitals in ten geographical areas. POPULATION 946 women w...
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