采用大变形弹塑性有限元法对带材异步冷轧过程的数值模拟

此文采用纠正的拉格朗日列式和基于弹塑性乘法分解的超弹性塑性本构关系,对铝带在不同轧制条件下的异步冷轧过程进行了大变形弹塑性有限元模拟.结果表明,在异步轧制时,轧制力对工作辊辊径的变化表现出非敏感性,而且由于搓轧区的存在,使得变形区内静水压力的绝对值比同步轧制时要小得多.     

Game theoretic analysis of environmental impact assessment system in China

Environmental impact assessment (EIA) system has been established in China since 1973. In present EIA cases, there are four participants in general: governments, enterprises, EIA organizations and the public. The public has held responsible for both social costs and social duties. The public supervises social costs produced by enterprises discharging pollutant in EIA. However public participation is mostly deputized by governments, which severely weaken the independence of the public as one participant in EIA. In this paper, EIA refers to the different attitudes of the participants whose optional strategies may be described by a proper game model. According to disfigurements in EIA, three sides (governments, enterprises, and EIA organizations) dynamic iterative game theory, dynamic game theory of incomplete information, and perfect Bayesian equilibrium theory to analyze the reciprocity relation among governments, EIA organizations and enterprises. The results show that in a short period, economic benefit is preponderant over social benefit. Governments and enterprises both do not want to take EIA to reveal social costs. EIA organizations’ income comes from enterprises and the collusions are built between them to vindicate economic benefit. In a long run, social benefit loss caused by environmental pollution must be recuperated sooner or later and environmental deterioration will influence the achievements of economic benefit, so both governments and enterprises are certain to pursue high social benefit and willing to take EIA, helpful to increase private benefit. EIA organizations will make fair assessment when their economic benefit are ensured. At present, the public as silent victims can not take actual part in EIA. The EIA system must be improved to break the present equilibrium of three sides, bringing the public to the equilibrium to exert public supervision.     

乌石化炼油厂污泥处理技术现状

介绍了国内外有关含油污泥的处理技术、以及乌石化炼油厂的三泥处理技术进展。     

试论环境监测信息系统及其应用

本文论述了环境监测信息系统的组成，功能及在城市环境质量评价中的应用，对环境质量评价的方法及实际应用作了初步讨论及分析。     

便携式净水器净化放射性污染水的研究

用非放射性元素代替放射性同位素进行静态和动态试验。筛选出了对一、二价阳离子有较好处理效果的D1树脂和对阴离子有较好处理效果的D2树脂。该净水器对两个水源中放射性污染物的净化效果表明 ,对试验水样中污染物的放射性强度均能净化( 2 0L)达到 99%以上 ;即使处理水量达到 35L时 ,其净化率仍能达到 97%以上。     

安宁工业区社会经济与环境持续发展战略规划

安宁是昆明的工业卫星城市和全省冶金、盐、磷化工业基地，限制其发展的环境因素主要是区域大气和水环境容量太小。围绕调整产业结构和工业布局等原则，将其划分为５个环境功能区和１个环境功能带。在未来发展中，走可持续发展道路，在布局上合理利用环境容量，加速城市化发展，加大环保投入，同时实施区域环境管理战略、污染防治战略、螳螂川水环境污染防治战略和区域水资源调控战略。     

煤矿矿井水及废水的性质和处理

煤炭是我国的主要能源。然而,煤炭的过量、非有序开发和非高效、非洁净利用带来的资源与环境问题已经成了中国经济、能源、环境协调发展的制约因素,并对全社会可持续发展构成了严重威胁,煤炭工业的健康发展面临着严峻的挑战。 煤炭在开采与利用过程中产生的环境问题是十分严重的,其中水污染是一个突出的环境问题之一。     

加强我国环境税收体系研究之浅析

建立环境税收体系,已越来越被一些国家重视,我国也将于2010年前课征环境税。因此,有必要对环境税收进行系统的研究。从客观上分析了目前国内外环境税的现状,并在此基础上就我国完善环境税收提出了一些建议。     

Secondary effect of SO_2 pollution: enhanced growth of the army worm, Mythimna separata (Walker)

Effects of SO2 pollution on growth of the army worm, Mythimna separata, were investigated by rearing the larvae for 12 days on the wheat plants being exposed to SO2 levels ranged from 50 to 200 ppb in the field open-top fumigation devices. Larval period shortened while their mean relative growth rate (MRGR) increased as SO2 dose elevated. Similar experiment with the insect on the artificial diet excluded the possibility that SO2 pollution directly stimulated growth of the army worm.The patterns of change in amino acid hydrolysates in the host foliage suggested that contents of methionine, and perhaps, arginine in food material exposed to unpolluted air were at such levels that they could only support sub-optimum growth of the insect, and SO2 pollution increased concentrations of these limiting amino acids, resulting in better performance of the larvae.     

低浓度含铬工业废水的在线自动监控新技术

研究了可自动监测工业排放废水Ｃｒ＾６＋的在线监测仪。采用５１系列单片机对流体注射仪（ＦＩＡ）进行自动控制，以硬件自动检测Ｃｒ＾６＋浓度。当Ｃｒ＾６＋浓度大于０．４ｍｇ／Ｌ，小于０．５ｍｇ／Ｌ时，发生预报警信号，大于０．５ｍｇ／Ｌ时，发出强报信号，以提醒工作人员控制废水排放浓度，采用防脉冲干扰平均值滤波法对数据进行处理，可消除采样中的干扰。