吴献忠
,
李美玲
工程热物理学报
混合制冷剂的相互作用系数是制冷空调应用中建模和计算制冷剂热力性质所需的一个重要参数,本文利用大量的汽液相平衡实验数据结合LKP方程进行了热力学关联,提出了适合于计算HFCs混合制冷剂的相互作用系数的一种算法,求取的相互作用系数用于汽液相平衡和循环分析计算具有较高精度,与实验数据或其他热力模型计算结果吻合情况良好.
关键词:
混合制冷剂
,
相互作用系数
,
LKP方程
X.B. Tian
,
X.F. Wang
,
A.G. Liu
,
L.P. Wang
,
S. Y. Wang
,
B. Y. Tang and P. K. Chu 1)Advanced Welding Production & Technology National Key Laboratory
,
Harbin Institute of Technology
,
Harbin 150001
,
China 2)Department of Physics & Materials Science
,
City University of Hong Kong
,
China
金属学报(英文版)
The research on plasma immersion ion implantation has been conducted for a little over ten years. Much is needed to investigate including processing technlogy, plasma sheath dynamics, interaction of plasma and surface, etc. Of the processing methods elavated temperature technique is usually used in PIII to produce a thick modified layer by means of the thermal diffusion. Meanwhile plasma ion heating is more recently developed by Ronghua Wei et al[1]. Therefore the temeperature is a critical parameter in plasma ion processing. In this paper we present the theoretical model and analysize the effect of imlantation voltage, plasma density, ion mass,etc on the temperature rise.
关键词:
plasma immersion ion implantation
,
null
,
null
夏小建
量子电子学报
doi:10.3969/j.issn.1007-5461.2009.06.010
采用Wei-Norman方法,求出含时变电压源的介观LC电路随时间演化的精确解,应用相空间准概率分布函数,研究了时变电源作用下介观LC电路相干态的量子特性,结果表明此函数是一个二维运动的Gauss波包,其中心电量和磁通呈余弦和正弦变化.
关键词:
量子光学
,
LC回路
,
介观电路
,
相干态
,
量子态演化
,
相空间的准概率分布函数
WEI Jihe Xi'an Institute of Metallurgy and Construction Engineering
,
China.
材料科学技术（英）
The oxidation of alloying elements during the ESR of stainless steel has been studied. The model previously developed by WEI and Mitchell for the chemical reactions and mass transfer processes during ESR was applied to the remelting of the high Cr steel 1Cr18Ni9(Ti).The laboratory data for the unsteady state A.C.ESR were analyzed and dealt with by the model.When the remelting process reached a steady state,an oxidant(Fe_2O_3 powder)or a deoxidant(Ca-Si powder or metallic Ca)was added to the slag bath.The results showed that this model is applicable to the remelting of stainless steel rather precisely, and it is expected that the model may offer a reliable basis for the control of composition during practical ESR of high alloy steel. Also,the oxidation of Cr in the steel must be noticed when its content is high;but it is entirely possible to adjust the Cr content of ingot within a considerable range,using a special technique by means of the slag-metal reactions during the remelting.
关键词:
ESR
,
null
,
null
,
null
,
null
Physical Review B
By using the Lee, Low, and Pines variational method, we have studied the electron-confined phonon, interaction within a rectangular quantum wire under an additional parabolic potential. Formulas for the polaron self-energy, the electron effective mass along the wire, and the ground-state energy are derived. Numerical calculations are performed for a typical GaAs quantum wire within the mesoscopic size using the idea of Fourier decomposition of the wave function. In comparison with previous calculations, our results show that the effect of phonon confinement always reduces the magnitude of the electron-phonon interaction and the associated physical quantities, whereas the additional parabolic potential tends to enhance not only this interaction but also the ground-state energy.
关键词:
electron-gas;well;localization
高珊
,
马艳会
液晶与显示
doi:10.3788/YJYXS20132802.0290
为了有效去除SAR图像中的相干斑噪声,同时很好地保留图像中的边缘细节,将双边滤波算法应用到SAR图像滤波,并使用ENL和EPI对其参数进行估计；经过参数估计的双边滤波算法作用于SAR图像后,很好地去除了斑点噪声且保留了边缘信息；实验结果表明,该算法的主观和客观数据都优于经典Lee滤波算法.
关键词:
相干斑去噪
,
双边滤波
,
边缘保持
,
ENL
,
EPI
