Flow and water temperature simulation for habitat restoration in the Shasta River,California

Low instream flows and high water temperatures are two factors limiting survival of native salmon in California's Shasta River. This study examines the potential to improve fish habitat conditions by better managing water quantity and quality using flow and water temperature simulation to evaluate potential restoration alternatives. This analysis provides a reasonable estimate of current and potential flows and temperatures for a representative dry year (2001) in the Shasta River, California. Results suggest restoring and protecting cool spring‐fed sources provides the most benefit for native salmon species from a broad range of restoration alternatives. Implementing a combination of restoration alternatives further improves instream habitat. Results also indicate that substituting higher quality water can sometimes benefit native species without increasing environmental water allocations. This study shows the importance of focusing on the limitations of specific river systems, rather than systematically increasing instream flow as a one size fits all restoration approach. Copyright © 2009 John Wiley & Sons, Ltd.     

双晶C／O能谱测井

单晶Ｃ／Ｏ测井仪由于受井径、井内流体、套管尺寸、水泥环等多种井眼条件的影响，使得到测井的灵敏度和分辨能力大为降低，严重影响了单晶Ｃ／Ｏ能谱测井仪的推广使用。．     

CASTTGRINDING~:灵活的环保型板坯表面精整工艺

CASTTGRINDINGR○ (铸造温度修磨 )工艺 ,通过对连铸板坯进行在线热精整 ,使其能够将板坯连铸生产与热轧工艺有机地形成一个整体。介绍了 CASTTGRINDINGR○热修磨工艺的主要特点和带来的好处 ,并举例说明与目前在碳钢精整时通常采用的传统式火焰清理设备相比 ,新工艺拥有的主要优点     

水电工程地质勘察中的环境同位素方法

本文较详细地介绍了氧-18（18O）、氘（D或2H），氚（T或3H）等环境同位素在水电工程地质勘察中的应用原理，列举了国内几个大型水电工程针对不同工程地质问题而开展环境同位素研究的应用实例，并对该方法的应用前景进行了展望。     

Commercialized fast reactor cycle systems and reactor core performance of the promising fast reactors

The Feasibility Study on Commercialized Fast Reactor (FR) Cycle Systems is under progress in order to propose prominent FR cycle systems that will respond to the diverse needs of society in the future. The design studies on various FR system concepts have been achieved and then the evaluations of potential to achieve the development targets have been also carried out. Crucial development issues have been found out for each FR system concept and their development plans for the key technologies are summarized as the roadmap. As a result, it has been confirmed that the sodium-cooled FR concept is highly suited to the development targets and R&D issues are related enhancing the economy with certain perspectives for realization. A flexible and robust development program for the FR cycle system will be proposed taking account of the characteristics for each FR concept until the end of the Phase II study.     

可靠性和可靠性试验

该文评述了可靠性试验对产品可靠性的重要性。     

浅谈精装修住宅六大隐形杀手

指出甲醛、苯、TVOC、氨、氡、石材的放射性为室内环境质量的六大隐形杀手,概述了六大隐形杀手的特性,并根据其来源和国家标准提出在工程勘察、设计、施工、竣工阶段控制六大隐形杀手的方法和措施以及检测方法.     

Effects of natural and synthetic surface active substances on the electrochemical reduction of cadmium in natural waters

Effects of surface active substances, natural and synthetic, in selected samples of seawater, river water and industrial effluents on the oxidation-reduction processes of cadmium have been studied by electrochemical methods and compared with the behaviour of different model compounds.Kinetic parameters, transfer coefficient α and apparent standard rate constant of the cadmium electrode reaction have been estimated from the shape and the height of the corresponding differential pulse voltammograms using theoretical curves obtained by digital simulation of the electrode process. The measure of the inhibition effect of surface active substances on the electrode reaction of cadmium was expressed in terms of the ratio of the rate constants determined in the presence and in the absence of surface active substances.It was found that the degree of inhibition depends on the concentration and type of surface active substances and on the pH of solution.     

漫湾水电站泄流雾化原型观测研究

高水头大流量的泄水建筑物泄流时产生严重泄流雾化对工程和环境造成污染，是必须考虑的重要问题，文章介绍了泄流雾化观测的新技术及其原理，包括：用立体摄影测量方法观测雾化流运动扩散的形态范围；用放射发现同位素测量典型区域内泄流雾化浓度，并配合以雨量筒测量典型泄流雾化降雨强度等，并以漫湾水电站的体观测为实例，介绍了实施方法和效果。     

环境革命与城市发展

阐述了对环境革命的认识 ,包括环境革命的产生背景、环境革命的思想观念、环境革命的深层价值等八个问题 ,并从城市发展契机、城市发展观、城市生态功能、城市环境容量、城市环保产业、城市空间格局、城市环境安全、城市规划的生态学化等十一个方面论述了环境革命对城市发展及城市规划的影响。