细管模拟确定混相压力影响因素评价

细管实验是确定混相压力最准确并能实现具有重复性结果的实验方法.以国内某实际油藏注CO2混相驱替为例,利用数值模拟技术,模拟不同细管长度、细管直径、细管孔隙及驱替速度等对混相压力的影响,揭示了在细管实验中不同细管参数选取给实验结果带来的影响,从而有助于很好地指导细管实验,取得符合油藏特点的混相压力.     

利用基因工程菌修复富营养化水体

以徐州市黄河故道应用基因工程菌修复富营养化水体为研究对象，对水体中富营养化指标进行了测定，并对水体中生物生长变化情况进行了观察，试验和分析了基因工程菌中的消氮细菌及沉淀细菌对水体进行生物修复的作用及其效果，指出了存在的问题，为利用生物修复技术处理天然湖泊的富营养化提供了参考数据．     

基于多元统计理论的干部评价模型与实证分析

以多元统计分析原理为依据，运用聚类分析、主成分分析、碎石检验准则对高校党政管理干部做出综合评价及实证分析，可以得出干部的分类和综合排序情况，为高校组织部门和人事部门考核、选拔、任用干部提供科学的测评依据。     

汽油清净分散剂电控喷射模拟试验装置的建立

根据汽油机喷油器结焦积碳形成机理,建立了一套有效的汽油清净分散剂的评定装置———电控喷射模拟试验装置。该装置通过对喷油器强化加热,控制喷油器的喷油时间间隔,从而强化了喷油器结焦积碳的形成条件,缩短了试验时间。为验证该装置的有效性,选用几种在实验室发动机台架上清净性效果较好的添加剂对其进行了试验验证。同时,通过控制喷油器的加热状况,以模拟汽车试验15/45喷油器环境温度。试验表明,该模拟试验装置对各种添加剂分辨效果明显,重复性好,试验可靠。通过对该模拟试验装置评定结果与试验室台架试验的评定结果的比较可知,两者评定结果趋势一致。     

恒力弹簧支吊架微机检测系统的研制

探讨了微机检测系统结构、硬、软件设计及系统实施中的关键性技术问题，设计了系统电气测量、控制和通信部分的硬件和软件，分析了系统的可靠性及采取的措施。     

广义Cauchy判别法

文献[1]中曾讨论了广义D’Alemben判别法——Kummer法，我们以比较定理为基础，得出了广义Cauchy判别法Cg，并证明了K真包含Cg。     

Mixed numerical-analytical approach for dynamic one-point-bend test modelling

Specimen deformation during a one-point-bend impact test is modelled within 2D linear elasticity framework. Using modal superposition technique, the closed-form solutions for the striker force and dynamic stress intensity factor (DSIF) variation with time are derived. Parameters used in these solutions have been determined using plane stress finite element model of the specimen and approximated polynomially for a wide range of the specimen geometry parameters. The efficiency of the method proposed has been verified by comparison of the analytical results with the experimental data available in the literature and with the results of finite element analysis.     

Research About Microstructure and Wear Resistance of Hardfacing Layer on Cast Iron

It's simple technology to manufacture big trimming die by hardfacing on the base metal of cast iron. The chemical composition, microstructure, hardness, wear resistance and wear mechanism of the hardfacing layer were studied.The experimental results indicate that the hardfacing technology has much more advantages and cheaper than that of traditional process. The chemical composition, microstructure, hardness of the hardfacing metal are all satisfied for manufacturing the big trimming die by welding on cast iron. The wear resistant test of hardfacing layers were carried out by using two different electrodes. The wear resistance of new electrode hardfacing layer is higher than that of normal hardfacing electrode D322. The wear mechanism of hardfacing layer is belongs to abrasive wear model.     

An Investigation of Passivatior of Cerium for Red Copper

The paperis studied and probed into the cerium application in the passivators of red copper. Through the experimentation of single factor we knoew that ithas remarkable quality influence among red copper passivators by Ce3 , determined that there is obvious function in its small content. And we educed a best technology through the orthogonal test. Research shows: there are obvious changes in the molecular structure of the passivating films after adding the Ce compounds and anticorrosive performance is improved.     

The Study of Low Surface Energy Fluorocarbon Coatings with Fluor Content Being Lower

A kind of low surface energy fluorocarbon coatings from the synthesized fluoro-acrylic resin was developed.The molecule orientation principle of nonpolar and polar functional groups in the coatings was analyzed. The contact angles of pure water drops on the surfaces of various fluoro-monomer homopolymers and interpolymers were measured. The relation of coatings' fluoro-content with the surface energy was determined. The distribution of fluoric functional groups in the coatings was investigated. The test results show that though the total content of fluor of the fluorocarbon coatings is relative few, their surface energy is really low due to the enrichment of fluoro-chains on the surfaces.