次子空间的同构

引入了次子空间同构的概念，并得到次子空间同构的充要条件．     

龙虾叶状幼体弧菌病防治的研究

对龙虾叶状幼体弧菌病采用多项措施，多种药物防治对比试验研究，总结出用沙－活性炭过滤海水，减少水体病原菌量，用漂白粉消毒水池和用具，杜绝污染源，用土毒素药浴亲虾，避免病原菌由卵带入，选用体格健壮的中年亲虾，保证孵化出的叶状幼体有旺盛的生命力，投放光合细菌、金藻、扁藻、丰年虫幼体、文蛤肉喂叶状幼体，改善叶状幼体营养，增强叶状幼体抗病力，利用光合细菌加速培育水体中有机物分解，净化水质，恶化病原菌生存环境     

油田污水回注中环境控制技术综述

油田产出污水是在油气钻井、开采、处理过程中必然的伴生物，也是石油工业中对环境造成危害的一大污染源。本文从综合治理、合理利用油田污水的角度出发，探讨了对油田污水应用环境控制技术，以治标和治本相结合，从石油工程的工艺本身和改进工艺过程减少油田污水的产出量和提高油田污水的回注利用率，从而显著改进环境质量，充分利用水资源的可能性，也讨论了当前在油田污水治理和回注利用方面应加强研究的几个问题。     

多片生成元集分形介质层的波反射

该文研究了多片任意生成元集（即更加广义的Ｃａｎｔｏｒ集）分形介质层的垂直入射及斜入射的反射透射谱，给出了这种情况下的一般自相似递推谱算法．这种算法能得到任意级次、任意结构及任意入射角条件下的振幅谱．文中所给出的一类反射谱是一种准周期自相似谱，有望在电子对抗、薄膜光学及光电器件等重要领域获得应用．     

科技英、俄语虚拟语气的简要比较

本文就科技英语和科技俄语的虚拟语气进行了简要对比。     

日本林蛙部分生理生化指标的比较

本文介绍我们对日本林蛙(Rana j.japonica)在冬眠期(12～2月,5.5～8.5℃)与活动期(9～11月,12.5～24℃)的部分生理生化指标的比较.测定了血清、肝、脑、心肌和骨骼肌的乳酸脱氢酶(LDH)同工酶的相对活力(±SD)、血红蛋白浓度及红细胞数等指标.这些指标不仅存在明显的组织差异,也存在季节差异和种群差异.     

凸轮—连杆机构运动的计算机辅助分析

本文提出了旋转坐标系的概念,从而不仅可将文献对低付机构的运动分析方法运用到含有高付的凸轮一连杆机构中,而且不必“高付低代”,即可进行机构在一个运动循环中的运动分析。本文编制了程序设计框图和程序,并通过实例给出了部分计算结果及线图。该程序设计框图和子程序“SUB”对其他机构运动分析具有一定的通用性。     

粘结平面对称分叉裂纹的奇异积分方程数值解

本文对一个含分叉裂纹的弹性半平面与另一不同材料的半平面粘结的问题用复势方法化为一组三个复Caucby型奇异积分方程。采用修正的Gauss-Legendre和修正的Lobatto-Legendre数值求积法则化成一代数方程组,裂纹尖端的应力强度因子值可从代数方程组的解求得。本文计算得到了弹性半平面、刚体与弹性半平面相粘结、两种不同材料的弹性半平面相粘结的三种问题的几种几何形状的对称分叉裂纹的应力强度因子。本文的结果扩充了“应力强度因子手册”的内容。     

Evaluation of the hepatotoxicological effects of a drug in an in vivo/in vitro model

Both in vivo and in vitro models have certain disadvantages for the study of the chronic hepatotoxicity of drugs. The aim of this work was to evaluate a new approach based on an in vivo/in vitro model. After chronic in vivo treatment of rats with Vincamine and Vindeburnol (an eburnamenine derivative which exhibits hepatotoxic properties in man) liver cells were isolated, and functional and metabolic disorders (metabolic utilization of fructose and protein biosynthesis) were studied to determine injury. The results showed no modification of blood parameters, but a direct relationship between the dose of Vindeburnol administered in vivo and the metabolic disorders observed in vitro, evidencing the high sensitivity and reliability of this model.     

Adrenocortical metabolism and plasma corticosterone in soman intoxicated rabbits

Summary The organophosphate neurotoxin soman produced impairments in adrenocortical RNA and protein metabolism. Fasciculate and reticular cell RNA and protein contents were supporessed with sublethal to acutely lethal dosages (20, 30 and 40 g/kg, s.c.) during the acute excitatory phase of intoxication and at 6–8 h post injection. All three dosages produced ca 90% inactivation of plasma cholinesterase. A transient elevation of plasma corticosterone occurred with 20 g/kg soman whereas there was a protracted increase with 30 g/kg. Corticosterone was not significantly elevated with 40 g/kg, but death occurred at 13±4 min. Thus, the magnitude and/or nature of soman-induced metabolic impairments does not appear to prevent adrenal activation.Supported by US Army Medical Research and Development Command Contract DAMD 17-81-C-1202.