石油化工装置安全距离确定方法研究

为确定石油化工装置与暴露目标间的合理安全距离,对国内外安全距离确定方法进行研究,以个体风险标准值和不同危害的伤害阈值为基础,提出确定石油化工装置与暴露目标间安全距离的基本原则。在此基础上,将确定性分析方法和基于风险的方法进行结合,形成石油化工装置与暴露目标安全距离的评估方法。该方法利用暴露目标的个体风险标准选择危害事件,并定义安全距离种类,根据"伤害标准"或"无伤害标准",采取确定性分析方法的方式,确定危害事件与不同暴露目标间的安全距离。应用示例展示该方法在石油化工装置安全距离确定中的应用。     

环保产业的战略价值与调控激励机制探讨

环保产业对人类社会的持续协调发展具有巨大的价值贡献 ,是战略性产业。人们应借鉴国际经验并结合国情 ,建立我国环保产业有效的调控激励机制 :从加强环保产业的驱动因素入手 ,制定有效的产业扶植政策 ,加强技术创新 ,构筑环保产业大市场格局 ,促进环保产业向深层次快速发展。 更多还原      

近十年来大理州旅游业碳足迹演变分析（2000-2011年）

应用以生命周期为原理的碳足迹评价方法,以云南省大理白族自治州旅游业发展为研究对象,计算得出游客在2000-2011年交通、住宿、饮食、游览、娱乐、购物六个方面所留下的碳足迹.研究结果表明,交通和游购娱的碳足迹总量占比重较大,说明大理州旅游业依然停留在传统观光旅游阶段.通过分析大理州旅游业发展面临的问题,在些基础上提出了促进大理州低碳旅游发展的策略.     

美国环保产业发展政策对我国的启示

当今环保产业作为新兴战略产业在世界范围内迅速成长。美国作为全球环保产业的领头羊,其环保产业的发展离不开政府行之有效的发展政策。美国政府主要通过法律法规、税收、贷款、债券、基金、放宽出口管制、以外交促贸易等政策措施,促进了美国环保产业的技术创新、投融资及国际贸易。借鉴美国政策经验,我国应在环保产业管制政策、技术创新政策、财税政策、国际贸易政策上做出相应改进,以促进我国环保产业积极健康发展。     

我国工业固体废物处理利用行业2013年发展综述

综述了我国工业固体废物处理利用行业2013年的发展环境形势和发展概况;介绍了2013年国内工业固体、危险废物及生活垃圾的产生量和处理情况;阐述并分析了目前国内固体废物处理技术和设施的现状;就行业发展存在的主要问题提出了建议.     

我国噪声与振动控制行业2013年发展综述

综述了2012年我国噪声与振动控制行业的发展环境以及行业的生产经营情况;阐述了行业总体技术进展、新技术的开发应用概况,以及行业市场特点及重要动态;分析了行业主要骨干企业的发展情况及企业的国内外竞争力状况;针对行业发展中存在的主要问题, 提出了解决对策和建议,并对行业的发展进行了展望.     

发展我国环境监测技术产业的探讨

本文从发展我国环境监测技术产业的角度论述了环境监测技术产业的主要内容,分析了我国环境监测技术产业的发展和存在的问题,对发展我国环境监测技术产业提出了建议。     

对秦皇岛市发展生物质能源产业的思考

秦皇岛市具有丰富的生物质能源资源和种植能源作物等发展能源产业的有利条件,应根据各县区的自然条件和生物质资源状况,科学制定生物质能源产业发展规划,并通过推动技术创新与科技进步、加强宣传引导和政策扶持等措施,促进能源产业的快速、健康发展.     

The importance of differentiating urban and rural phenomena in examining the unequal distribution of locally desirable land

Previous research addressing the unequal distribution of locally desirable land (LDL) has mainly ignored their associated environments (i.e., rural or urban). However, this study proposed a new framework that treats rural and urban regions separately. In rural areas, the LDLs included all public lands. In urbanized areas, the LDLs were defined as green open spaces. Potential inequities in the distribution of LDL were assessed with respect to socioeconomic characteristics of residents in the State of Georgia. Using US Census Bureau Data (2000), Census Block Groups (CBGs) adjacent to LDLs were compared to CBGs outside of LDLs on four socioeconomic variables (per capita income, occupation, education, and race) in urban, suburban and rural environments. Results showed that CBGs adjacent to LDLs were composed of statistically significant upper-class communities containing fewer blue-collar workers, more whites, and higher income and higher educated people in rural, suburban and urban areas.     

Exploratory Analysis of the Winter Chemistry of Five Lakes on the North Slope of Alaska1

Abstract: Lakes are important water resources on the North Slope of Alaska. Freshwater is required for oilfield production as well as exploration, which occurs largely on ice roads and pads. Since most North Slope lakes are shallow, the quantity and quality of the water under ice at the end of winter are important environmental management issues. Currently, water‐use permits are a function of the presence of overwintering fish populations, and their sensitivity to low oxygen concentrations. Sampling of five North Slope lakes during the winter of 2004‐2005 shed some light on the winter chemistry of four lakes that were used as water supplies and one undisturbed lake. Field analysis was conducted for oxygen, conductivity, pH, and temperature throughout the lake depth, as well as ice thickness and water depth. Water samples were retrieved from the lakes and analyzed for Na, Ca, K, Mg, Fe, dissolved‐organic carbon, and alkalinity in the laboratory. Lake properties, rather than pumping, were the best predictors of oxygen depletion, with the highest dissolved‐oxygen levels maintained in the lake with the lowest concentration of constituents. Volume weighted mean dissolved‐oxygen concentrations ranged from 4 to 94% of saturation in March. Dissolved oxygen and specific conductance data suggested that the lakes began to refresh in May.