城镇化建设中乡村环境保护关键点分析

城镇化是推动我国经济社会发展的重要动力,在高速发展的同时,带来大量污染排放,威胁乡村环境质量与可持续发展。在对乡村生态环境问题剖析的基础上,从战略、实施、方式等层面探索解决思路,围绕科学规划、发展方式、基础建设、管理机制、宣传教育等方面分析关键点,加强乡村环境保护,保障城镇化建设健康发展,为促进农村农业持续发展提供持久动力。     

Investigation of the toxicity of the products of decoloration of Amaranth by Trametes versicolor

Trametes versicolor decolorized 2000 mg L(-1) of the mono-azo substituted naphthalenic dye Amaranth with no dye sorption observed visually. The changes in the toxicity were assessed over a period of 30 d for the dye-treated viable culture, control (no dye added), and a boiled culture treated with dye, using the Microtox Acute Toxicity assay. Before dye addition, the culture filtrate had some toxicity, which increased after the dye addition. The toxicity of the dye-treated culture decreased during the treatment. The loss of toxicity occurred at the same time, with the loss of color suggesting that detoxification is associated with decoloration. The change in pH was due to natural metabolic processes and had a small effect on detoxification. Because the toxicity of the treatment was similar to that of the control at the end of the treatment, the effluent seems to be safe for release into the environment, potentially rendering this treatment suitable for industrial application.     

随机规划在泵站树状给水管网优化中的应用

泵站树状给水管网流量具有随机性,而这种随机性变化会直接影响管网的建设费用和动力费用.针对这-特点,应用随机规划原理,建立泵站树状给水管网机会约束模型,编写基于随机模拟的遗传算法程序求解该模型.机会约束模型能较客观地反映该管网的实际工况,使优化设计结果更符合实际.     

山东省环境经济系统地域分异研究

环境保护与经济发展相协调,是人类社会持续发展的必由之路.环境经济系统是由环境子系统和经济子系统耦合而成的复合大系统.在用系统论对环境经济系统进行结构分析的基础上,采用主成分分析法和加法合成原理,对山东省17地市环境经济系统进行综合分析和类型划分,并从地域差异角度提出了分区特点及今后的发展建议,以期为山东省环境经济系统高水平协调发展提供决策依据.     

资源丰度的定量计算

提出了一种通用的定量计算方法,即用规范化指数表示各地区的资源丰度,用“度”作为资源丰度的计量单位。指数表示法计算的资源丰度值实现了资源丰度在可比尺度上的综合评价。它概念明确,简单易行,具有可比性和可传递性,从理论和应用方面来说都具有许多优点。     

A method for prediction of extent of microbial pollution of seawater and carrying capacity of beaches

The increase in the number of tourists visiting a coast is desired by most of the countries for economic reasons. However, this increase in tourism may cause pollution of the sea. This can be only avoided by proper planning and by predicting the carrying capacity of the coast in terms of sea pollution. This is especially important for developing countries where part of the wastewater is discharged without any treatment into the sea.In the present study the beaches were classified according to their use — and consequently the amount of waste discharged into the sea — into four groups: (1) coasts that are used only for swimming and recreational purposes; (2) coasts used simultaneously for dwelling, swimming, and recreational purposes; (3) coasts along which only dwellings exist; and (4) natural and man-made harbors, i.e., coasts used as shelters. During the survey,40,320 observations were made between December 1985 and February 1988 to determine the effect of the number of tourists on seawater quality. The results obtained were analyzed by a multilinear regression program to obtain an empirical equation giving the extent of the sea pollution in terms of coliform concentration as a function of population density and some other environmental factors.The equations derived in this study enable the determination of the carrying capacity of a beach in terms of pollution as well as the expected degree of pollution corresponding to a given population density. Furthermore, it allows the prediction of the extra carrying capacity that can be obtained by improving the waste-disposal conditions.     

合肥市黄山路信息产业专门化街区的构成与演化

阐释了信息产业专门化街区的内涵,结合对合肥市黄山路信息产业专门化街区构成要素的分类及其邻近度的分析,分别从空间结构演化、景观演化、功能演化三方面阐述了合肥市黄山路由"电子一条街"向"信息产业专门化街区"的总体演化阶段,探讨了信息产业专门化街区的未来发展趋势。     

铬渣湿法解毒技术

正由河南金谷实业发展有限公司开发的铬渣湿法解毒技术,适用于铬渣及铬污染物处理。主要技术内容一、基本原理将铬渣或含铬污染物湿化研磨后,利用酸性介质将其中的酸溶性六价铬、水溶性六价铬完全转移至液相中,然后再投入还原药剂将液相中的六价铬还原至三价铬,并沉淀固定在工艺残渣中,实现铬渣及含铬污染物的无害化处置。二、技术关键全过程采用湿式液相处置工艺,用较大量的酸和还原剂,使酸溶和水溶六价铬全部还原。典型规模处理量500t/d。     

复合固定化法固定化微生物技术在污水生物处理中的研究应用

复合固定化法固定化微生物技术由于具有许多传统固定化微生物技术所没有的特点和优势,得到了越来越多的研究和应用.本文就复合固定化法固定化微生物技术的内涵进行了综述,对复合固定化法在污水生物处理中的实际应用做了研究比较,对新型复合载体的开发和复合固定化微生物技术今后的发展提出了建议.     

Microsoft Excel在环境监测数据处理方面的应用-Grubbs检验离群数据

利用Microsoft Excel创建Grubbs检验离群数据的电子表格，并介绍了该表格的使用方法。     

DCS在电镀工业园废水集中处理中的应用

本文介绍了中山市三角镇高平电镀工业园区采用的蹴制系统和在线监测系统，通过相关的检测和计量系统计算每个企业各类废水的排放量及浓度，以便进行分类收费。该系统运行稳定，故障率低，易于操作和维护，降低了操作人员的劳动强度，提高了工作效率，保证了废水处理后的达标排放。     

炼油污水净化回用工业试验综述

随着我国石油加工业的发展,炼油装置及生产能力不断增加,炼厂对新鲜水的需求量和污水的排放量也在逐年增加。因此如何节约用水和减少污水的排放量,将炼油污水净化回用,是降低企业加工成本,提高企业经济效益,而且进一步利用水资源,提高社会效益和环境效益的重要课题,哈尔滨炼油厂自1997年开始经过小试、中试及工业试验,将炼厂污水净化回用,取得了很好的结果,同时该课题通过了中油股份公司组织的技术鉴定。     

我国城市生活垃圾处理的市场化对策探讨

本文通过对城市生活垃圾的产生、处理现状的分析,看到垃圾处理的严峻性和刻不容缓的态势,提出我国城市垃圾处理必须走市场化道路的对策。领先全民参与、人人动手解决垃圾污染问题,促进城市垃圾蛄量化、无害化、资源化进程。尽快稳步提高我国城市垃圾处理水平,实现我国城市处理的市场化、产业化。     

边着色图上单色三角形个数的一种证明

通过赋权的方法讨论了单色三角形数量的范围,给出一种较简单的证明,介绍了板植图的存在性。     

燃煤二氧化硫控制技术应用概况

由燃煤引起的二氧化硫污染已成为大气环境中最主要的污染因子。为解决这个问题，我国结合国外的技术成果，进行了各种脱硫技术的研究。介绍了各种治理技术应用情况，并结合实际经验对其中应注意的问题给予评述。     

Patterns of television viewing and of perceptions of hazards to life

A previous study using respondents in a London regional audience appreciation diary panel showed that links existed between overall amounts of the viewing of television recorded across one week and levels of perception of risk of three hazards to life, namely lightning, flooding and terrorist bomb attacks. With a fourth hazard, cancer, there was an inverted U-shaped relationship between perceived risk level and amount of viewing. At the same time there were no relationships between amounts of viewing of news and documentary material and perceived risks of any of 12 hazards. Two new surveys were done, nearly three years after the previous one, asking people in widely different regions about their perceptions of nine various hazards, and linking these results with measures of attitudes towards certain adaptations of new technology (which could prove hazardous or beneficial according to points of view) and to patterns of television viewing. The two surveys agreed on a wide number of points with each other; they agreed with the previous study in finding no steady relationships between information programme viewing and hazard perception. Lightning and flooding were again related, this time more specifically with viewing of particular types of television programming. A new finding is that heavier viewing of television sport is associated with less perceived risk of cancer and of nuclear pollution. Interpretations are generally favoured along the lines of a selective process of viewers with certain predispositions choosing certain kinds of viewing patterns, rather than that programme contents provide an example for formulating perceptions and attitudes.     

MAPGIS在龙口市土地利用现状数据库建设中的应用

以中国地质大学开发的MMPGIS通用型地理信息系统软件为基础,以山东龙口市2004土地利用现状为例,介绍了龙口市土地利用信息系统建设的方法与步骤,包括影像数据的纠正,矢量数据、属性数据的采集,以及数据入库方法,最后提出了在建库过程中遇到的一些问题.     

开发白洋淀旅游资源的制约因素与对策

作者在实地调查研究的基础上，认为制约白洋淀旅游业发展的因素主要有水位不稳、水质受到污染、旅游项目内容贫乏、参与性差、景区文化氛围不和谐，以及管理不到位。作者提出，应努力保持其水位稳定，加强流域内污染治理，理顺管理体制，建立白洋淀湿地保护区，加大旅游资源开发和宣传力度，丰富旅游的文化内涵等来保证白洋淀旅游的可持续发展。     

Numerical and experimental investigation of state of health of Li-ion battery

ABSTRACT

Estimation of State of Health (SoH) of Lithium-ion (Li-ion) battery is essential to predict the lifespan of batteries of an electric vehicle (EV). The efficient prediction of battery health indicates to the effective and safe operation of EV. However, delivering an effective and accurate method for the estimation of SoH in the real condition is truly a challenging task. The present study proposed a holistic procedure of combining both experimental and numerical investigations to conduct the fundamental study on coupled mechanical-electrochemical behavior of Li-ion battery. The proposed investigation highlighted the effect of stress on the capacity of the battery, considering capacity fade as an equivalent parameter to its health for real-time estimation of SoH. Finally, a simple model of Artificial Neural Network (ANN) is provided, which shows the linear dependency of stress with the SoH. The results obtained from the ANN model are validated with a Linear Regression (LR) model for a better understanding of the inspection. The predicted value of mean Square Error (MSE) and R square error in the ANN training model are found to be 0.000309 and 0.849687, respectively. Whereas for the test model, these predicted values are found to be 0.000438 and 0.819347, respectively.