级配碎石弹性模量的动三轴试验研究

通过室内动三轴试验，提出了级配碎石弹性模量随应力状态而变化的非线性模型，分析了含水量和密实度对弹性模量的影响，最后提出常应力状态下级配碎石弹性模量建议值。     

高速公路沥青路面性能综合评价模型的探讨

利用河北省高速公路调查数据,针对高速公路行车对路面性能的要求,引入了抗摩擦指数概念,并用灰并联分析法来综合评价高速公路沥青路面性能,建立能正确反映高速公路的综合评价模型。     

地尔硫对失血性休克犬心脏的影响

犬由股动脉放血，维持血压（５．３３～６．６７）ｋＰａ９０ｍｉｎ，在休克期静脉输入地尔硫艹卓０．６ｍｇ／ｋｇ，再进行休克复苏，并观察１５０ｍｉｎ。结果表明：地尔硫艹卓具有提高ＭＡＰ，改善心肌收缩性；降低心肌脂质过氧化产物丙二醛（ＭＤＡ）含量，提高心肌超氧化物歧化酶（ＳＯＤ）活力的作用；对心肌超微结构有明显的保护作用。     

弯曲时空的钟同步

用几何语言对弯曲时空的标准钟及坐标钟的同步问题做了较详尽的讨论同时对某些模糊说法做了澄清。     

Several Problems in the Development of Basic Disciplines

In this paper,several problems related to the development of basic disciplines areexpounded from macroscopis visual angle.First,four important concepts(basic science,basicdiscipline,basic research,fundamental research)are analyzed.Then,reserve strength for thedevelopment of basic disciplines in China is considered in accordance with funds that have beenput into basic research.Finally,several theoretical cognition problems concerning the developmentof basic disciplines(such as social function of science,motive force for the development of basicdisciplines,as well as soft environment and cultural atmosphere favourable to it) are discussed.     

Experimental Research on Resonance Response Differences of the Rotor System with Sliding and Rolling Bearings

Most of the research work on bearing-rotor systems usually simplifies the supporting bearing as a spring or damp system, and ignores that the resonance responses involve obvious differences when the same rotor system is supported by varying types of bearings. Aiming at the resonance responses of coast down running tests of the rotor system, we employed two different bearings in experiments: One is the fluid film journal bearing, and the other is the rolling element bearing. The experimental results obtained with the above bearings are compared. The resonance test Bode plots and orbit shapes of the rotor shaft are established. Also, summarized under resonance are the dynamic characteristics and regularities of the two types of bearing-rotor systems. The natural frequency and resonance mode of the same rotor system will change thoroughly with the type of supporting bearings. The results are helpful for system modeling, security running, dynamic design, the study of dynamic characteristics, and the fault diagnose of bearing-rotor systems.     

氢对ODS铁素体钢辐照性能的影响

采用离子注入和高压电镜原位观察的方法，研究了氢对国产ＯＤＳ铁素体钢辐照性能的影响，结果表明：室温注氢前后ＯＤＳ铁素体钢的微观结构无明显变化；将其加热到５００℃并电子辐照，未观察到辐射空洞，注氢与未注氢ＯＤＳ铁素体钢室温电子辐照的结果表明：氢对点缺陷的迁移和聚集起着十分重要的作用。     

两类区间算法的收敛性

对于非线性方程组,本文中推广了 Alefeld 的两种区间 Newton法,由此可导出各种不同的算成,以便在特定的应用中做出合适的选择。另外,对Alefeld 提出的问题给出肯定的回答。     

用铬酸根与邻氨基苯酚的氧化显色反应萃取光度法测定铬酸根

本文研究了在pH5.3的HAc-NaAc介质中，铬酸根与邻氨基苯酚反应产生黄色氧化产物．建立了萃取光变法测定铬酸根的新方法．方法的线性范围为0.01-2．0μg／ml，摩尔吸光系数为23×104L.mol-1.cm-1，用于污水中铭酸极的测定，结果满意．