就业结构的变化趋势与高等教育结构的调整(上)

就业结构是一个动态的概念,其影响的因素是多方面的. 　　一、影响就业结构的主要因素 　　就我国目前的状况分析,影响就业结构的主要是:世界经济社会发展的宏观大背景;我国刚刚加入世贸组织;我国社会主义初级阶段的基本国情三大因素. 　　……     

复线电气化区段施工感应电对人体的危害及防护对策

感应电会对人体造成伤害。从电磁感应和静电感应原理入手，分析了产生感应电的过程，并就如何防止感应电的危害提出了防护对策，有一定实用价值。     

PB在企业管理系统中与多种数据库的连接

分析了使用面向对象数据库软件Power Builder开发煤气公司一表一卡管理系统过程中，对SQL Server和Visual Foxpro两种不同数据库的连接，提出了解决新系统与旧系统的数据兼容问题。     

链条炉存在的问题及解决方法

从炉排横向配风不均、风室压火、煤层厚度阻力及锅炉燃烧等方面分析了链条锅炉存在的问题，并针对存在的问题提出了相应的解决办法。     

Modeling and Control of Active Suspensions for MDOF Vehicle

The conventional method for analyzing active suspension control for a vehicle is only to analyze a quarter or half car with a lower order degree-of-freedom (DOF) model, but such models do not actually model practical applications. Accurate models of a suspension control system require a multi-degree-of-freedom (MDOF) vehicle model with a detailed model of the controller. An MDOF model was developed including the influence of factors such as the engine, the seats, and the passengers to describe vehicle motion using a reduced order model of the controller designed by using the H∞ control method. The control system performance has been investigated by comparing the H∞controller with a linear quadratic (LQ) controller.     

Microbial degradation of bitumen

Summary A blown bitumen Mexphalte R 90/40 with a high content of saturated hydrocarbons was degraded by several microorganisms to the same extent. In batch cultures ofSaccharomycopsis lipolytica, maximal biodegradation was estimated to be about 9% w/w, 3.2·10^–3 g/cm² and 3.1·10^–3 cm of degraded bitumen. The Mexphalte R 90/40 degradation rate was closely coupled to biofilm formation. The microbial activity concerned predominantly the oxidation of saturated hydrocarbons. A direct distillation bitumen 80/100 with a low content of saturated hydrocarbons and a high content of aromatic hydrocarbons and resins was more resistant to biodegradation.     

关于毛泽东的反对错误倾向的分析与思考

毛泽东关于反对错误倾向的思想是非常深刻、非常系统的。完全可以说,毛泽东关于反对错误倾向的思想是一整套严密的理论。我们应该学习和继承这一理论。但在反对错误倾向的问题上,毛泽东有沉重的经验教训值得我们记取。     

An Ig-A-like substance in the chicken's pineal

Summary Immunohistochemistry revealed an Ig-A-like substance on the luminal surface of the pineal follicles and in the parafollicular layer. This substance was observed around 1 week of age and disappeared by 8 weeks at the time when the transformation of the follicular pattern leads to an adult-type pineal tissue.     

谈化工原理课如何进行德育渗透

结合化工原理课程内容及教学方法，在讲授专业知识的同时，注重培养学生的职业创造能力，并使他们掌握科学的学习方法、养成良好的行为习惯，能适应快速发展的化工行业新需要。