减压渣油深度转化组合工艺及其供氢溶剂筛选

以减压渣油为原料,催化裂化加氢重循环油和工业馏分油窄馏分为供氢溶剂,采用溶剂脱沥青-液相加氢组合工艺,可将减压渣油高效转化为轻质油。结果表明:焦化蜡油（410～430 ℃）、FCC油浆（450～470 ℃）、糠醛抽出油（430～450 ℃）、重循环油（410～430 ℃）窄馏分的供氢能力依次为2.28,2.61,4.86,2.73 mg/g,远低于四氢萘（7.90 mg/g）,而加氢重循环油（0.948 7 g/cm3）供氢能力（7.42 mg/g）与后者相近;采用组合工艺,以加氢重循环油为供氢溶剂,减压渣油的综合转化率为90.84%,轻质油收率（质量分数）可达89.35%,焦炭得到有效抑制。     

哈尔滨群力雨洪公园 大地上的海藻

从2006年开始．位于哈尔滨东部的群力新区开始建设,总占地27km2,建筑面积32000000m2,规划用13～15年时间全部建成。将近有30万人口。新区绿地面积占16．4％,而大部分土地将是城市的硬化地面。而当地的年降雨量是567mm,却集中在6至8月（占60％～70％）。本地处于低洼平原地带,历史上洪涝频繁。     

GeOI pMOSFETs空穴迁移率的物理模型

A physical model of hole mobility for germanium-on-insulator p MOSFETs is built by analyzing all kinds of scattering mechanisms, and a good agreement of the simulated results with the experimental data is achieved, confirming the validity of this model. The scattering mechanisms involved in this model include acoustic phonon scattering, ionized impurity scattering, surface roughness scattering, coulomb scattering and the scattering caused by Ge film thickness fluctuation. The simulated results show that the coulomb scattering from the interface charges is responsible for the hole mobility degradation in the low-field regime and the surface roughness scattering limits the hole mobility in the high-field regime. In addition, the effects of some factors, e.g. temperature, doping concentration of the channel and the thickness of Ge film, on degradation of the mobility are also discussed using the model, thus obtaining a reasonable range of the relevant parameters.     

脲醛树脂的合成及在涂附磨具中的应用

本文主要简述脲醛树脂（包括改性脲醛树脂）的合成原理及方法,及在涂附磨具页状、卷状、带状产品中的应用。