Treatment Technologies For Hazardous Wastes: Part III Treatment Technologies for Corrosive Hazardous Wastes

In this paper, the authors present generation and treatment information for corrosive hazardous wastes (EPA Hazaradous Waste Codes D002 and K062). The authors discuss the state of the art for several treatment trains used to process specific types of corrosive waste. Treatment trains incorporate various unit processes selected from but not limited to the following: neutralization, filtration, carbon adsorption, biological oxidation, distillation, air flotation, and incineration. Unit processes are selected to form trains according to the corrosive characteristics of each individual waste stream. The treatment processes discussed are proposed to be used instead of landfills for disposal of corrosive waste.     

Note On A Preliminary Study of the Effects of Roof Tar Evaporate on Oxidant Levels Measured by Iodide Colorimetry

Some evidence exists to relate elevated oxidant levels, as measured by iodine colorimetry or coulometry, to the presence of roof tar evaporates or the oxidation products produced from such evaporates in the presence of sunlight.     

弹箭外表面接插件高温高湿度耦合环境试验方法研究

目的 在地面条件下更真实地模拟弹箭外表面电器接插件在雨、雪、雾等高湿度条件下的飞行环境,方法利用数值分析方法,通过综合对比相同喷嘴结构下不同出口尺寸的外流场形态、不同压差下喷嘴出口流量等计算结果,确定喷口尺寸和工作压力.通过涡流黏度云图,确定接插件与喷嘴的相对位置关系.通过建模对喷淋方案进行效果预测后,搭建配套试验系统,并在石英灯加热器热辐射环境下开展高温高湿度耦合环境实效模拟试验.结果 试验中加热条件能够满足飞行过程中的表面温度及总加热量要求,水气环境模拟达到1.82 mm/min条件.试验后,对参试产品进行阻值测试、剖面碳化层厚度测量和热解产物分析,表征电气特性良好.结论 所述试验方法能够同时有效模拟高温高湿度飞行环境,能够对雨、雪、雾等高湿度条件下的接插件产品的飞行可靠性进行有效评估.     

Sustainability Appraisal of Water Governance Regimes: The Case of Guanacaste,Costa Rica

Sustainability appraisals produce evidence for how well water governance regimes operate and where problems exist. This evidence is particularly relevant for regions that face water scarcity and conflicts. In this study, we present a criteria-based and participatory sustainability appraisal of water governance in a region with such characteristics—the dry tropics of NW Costa Rica. Data collection included 47 interviews and three stakeholder workshops. The appraisal was conducted through a collaborative and iterative process between researchers and stakeholders. Out of the 25 sustainability criteria used, seven posed a significant challenge for the governance regime. We found challenges faced by the governance regime primarily clustered around and were re-enforced by failing coordination related to the use, management, and protection of groundwater resources; and inadequate leadership to identify collective goals and to constructively deliberate alternative ways of governing water with diverse groups. The appraisal yielded some positive impact in the study area, yet we found its application provided only limited strategic information to support broader problem-solving efforts. Insights from this study suggest key starting points for sustainable water governance in the Central American dry tropics, including investing in increasingly influential collective organizations that are already active in water governance; and leveraging policy windows that can be used to build confidence and disperse more governing authority to regional and local governing actors that are in-tune with the challenges faced in the dry tropics. We conclude the article with reflections on how to produce research results that are actionable for sustainable water governance.     

Linking Local Sustainability Initiatives with Environmental Justice

Beyond adopting sustainability as a feel-good slogan, many communities are trying to translate this general principle into specific and measurable terms. Community indicators are being introduced as a tool for analysis and community development in US cities from Seattle, WA to Jacksonville, FL. Most efforts acknowledge that sustainability ought to serve communities as a whole; rather than privilege certain elites, sustainability should build social equity. Using a web-based methodology, this research reviews sustainability efforts in 33 of the largest US cities to see which have addressed environmental justice as a dimension of sustainability. Five projects are identified and their programmes are summarised in terms of educational, policy and implementation content. KEE WARNER, Enlazando Iniciativas de Sostenibilidad Local con Justicia Ambiental . Más allá de adoptar la sostenibilidad como un lema para estar bien, muchas comunidades estan tratando de trasladar este principio general en términos específicos y medibles. Indicadores comunitarios esta´n siendo introducidos como una herramienta para el análisis y el desarrollo comunitario en ciudades americanas como Seattle, Washington a Jacksonville, Florida. La mayoría de los esfuerzos reconocen que la sostenibilidad tiene que servir a las comunidades como un todo; más que privilegiar ciertas élites, la sostenibilidad debe construir equidad social. Usando una metodolgía basada en la red, esta investigación estudia los esfuerzos para promover la sostenibilidad en treinta y tres de las mas grandes ciudades de los Estados Unidos para ver cual a dirijido justicia ambiental como una dimensión de sostenibilidad. Cinco proyectos son indentificados y sus programas son resumidos en términos de contenido educacional, político y de implementacio´n.     

工作价值观、调节焦点与安全绩效的关系研究——基于煤矿企业新生代员工的实证分析

为了从价值观和调节焦点的双重视角给煤矿企业新生代员工的安全管理提供科学依据,在文献研究和问卷调查的基础上,对 244 个有效样本进行分析,揭示煤矿企业新生代员工工作价值观的具体内容,结合动机理论和调节焦点理论,构建煤矿企业新生代员工工作价值观、调节焦点和安全绩效的结构方程模型。研究结果表明:煤矿企业新生代员工的工作价值观包含发展导向、自我导向、关系认同、独立自主、利益导向和创造导向6个因子结构;煤矿企业新生代员工的工作价值观、调节焦点和安全绩效两两之间均显著相关;煤矿企业新生代员工的工作价值观不仅可以直接预测安全绩效,还可以通过调节焦点的中介作用间接影响煤矿员工的安全绩效。     

南极生态环境及管理现状研究

南极作为世界上最后一块“净土”,其丰富的自然资源和内在的科研、美学等价值受到了越来越多国家的关注。在全球变暖与人类活动（科学考察、商业捕捞、旅游等）因素的影响下,南极出现了海冰面积区域性增减,南极生物物种数量波动,环境污染加重等问题。而现有的以“南极条约体系”为基础的管理政策因理念抽象等问题尚不能完全规范人类活动,南极生态环境保护的形势日益严峻。国际社会应通过跨学科间的国际协作,加强科学研究与管理之间的联系,完善南极生态环境管理政策,最大限度减少人类对南极生态环境的破坏。     

The tenth dragon: controlled seasonal flooding in long-term policy plans for the Vietnamese Mekong delta

Recently the Vietnamese government has endorsed a long-term policy plan in which it is proposed to restore controlled seasonal flooding in the upper regions of the Vietnamese part of the Mekong delta. Restoring controlled flooding would contrast a period of several decades characterized by a dominant flood prevention approach to enable intensive rice production in the delta. This article investigates a series of long-term policy plans, which have been developed for the Mekong delta since the 1960s, on their take on flood control sensu flood prevention, or the opposite, controlled seasonal flooding. By doing so it is demonstrated how perspectives on flood management have gradually evolved and, in the specific case of suggesting controlled flooding, have been framed in various ways by various actors. Contemporary proposals for controlled seasonal flooding are supported by actors ranging from governmental institutes to environmental NGOs, and connect to on-going debates about environmental challenges and sustainable development of the Mekong delta. We adopt a systems approach to analyze social, environmental and technological dynamics in the Mekong delta, and discuss whether the different interpretations of controlled flooding may contribute to the long-term sustainability of the delta.     

突发性气象灾害监测系统的设计

本文探讨了一种以新一代多普勒天气雷达为探测手段,应用GIS技术,借助Surfer等值线分析功能,获取灾害性天气落区、面积等定量化信息的方法,并据此以VB及VBA开发了一套突发性气象灾害监测系统,并给出了该系统一次典型冰雹过程的应用实例.     

SPE-HPLC-MS/MS法检测水体和沉积物中六种甾体雌激素

建立了三种天然雌激素和三种人工合成雌激素在水体和沉积物中的HPLC-MS/MS分析方法.该方法运用固相萃取技术进行富集及净化,有效降低了基质的干扰,六种雌激素在水体中的回收率为76.4%～110.3%,沉积物中的回收率为63.7%～88.5%,相对标准偏差在1.04%～9.23%间.质谱采用负离子扫描模式,定量的碎片离...