牵连运动为平面运动时点的加速度合成定理的证明

用矢量法给出牵连运动为平面运动时，点的加速度合成定理的证明。     

CAD/CAM集成技术研究

从ＣＩＭＳ出发，探讨了ＣＡＤ、ＣＡＭ集成的目的、途径以及集成需要解决的关键技术问题，阐述了这一研究领域的最新发展情况。     

一类最优更新策略的研究

当系统元件受到很多独立因素影响时,本文以矿井提升系统中的铜丝绳为例,利用可靠性理论,给出它的可靠性评估及安全系数的计算,并利用更新极限定理,在其寿命为正态分布的情况下,通过一个近似方程,得到了最佳更换策略。为制订合理的维修更换制度提供了理论依据。     

广义Liénard方程系统的极限环问题

本文研究系统及其特例的极限环问题,得到若干结果。作为一个例子,证明了四次多项式Li(?)nard系统:当ac<0,b、c固定但∣a∣充分大时的无环性。     

国防价值工程应用环境的系统分析

本文阐述了国防价值工程应用环境的概念，系统地分析了国防领域推广应用价值工程的有利和不利因素，进而给出了应用国防价值工程应具备的基础条件。     

区域环境决策的协调支持模式

为使区域环境决策更加有效化，文中建议开发和设计区域环境决策支持系统，定义了系统协调思想和总体结构模式，提出了系统协调开发新方法，分析了该系统的功能组成，探索出一条有效开发ＤＳＳ的新思路．     

BICP0 and its RING finger domain act as ubiquitin E3 ligases <Emphasis Type="Italic">in vitro</Emphasis>

Bovine infected-cell protein 0 (BICP0) encoded by bovine herpes virus 1 (BHV-1) immediate early gene is necessary for efficient productive infection, in a large part,because it activates all 3 classes of BHV-1 genes. It also has the ability to efficiently transactivate promoters that are not derived from BHV-1. To investigate the mechanism by which BICP0 achieves these effects, we expressed and purified BICP0 and its different mutants in E. coil In vitro assays showed that both full-length BICP0 and its isolated RING finger domain induce the accumulation of polyubiquitin chains. Mutations within the RING finger region that abolish the in vitro ubiquitination activity also cause severe reductions in BICP0 activity in other assays. Based on these, we conclude that BICP0 has the potential to act as an E3 ubiquitin ligase during viral infection and its RING finger domain is necessary for this function. These strongly support the hypothesis that BICPO might influence virus infection through its ability to interact with the ubiquitin-proteasome pathway.     

几种羟肟酸捕收剂与白云石作用机理研究

为了更好的揭示羟肟酸类捕收剂与白云石作用机理,利用Materials Studio(MS)软件建立羟肟酸捕收剂在白云石矿物表面的吸附模型,通过分子模拟技术模拟计算了真空环境下药剂分子与白云石矿物的相互作用能。从原子尺度揭示了捕收剂在白云石浮选中的捕收机理,研究表明吸附能的差异是导致捕收剂选择性捕收的根本原因。