钙法提钒尾渣的浮选脱硫试验

根据钙法提钒尾渣的矿物特性,采用浮选法分离其中的石膏以实现脱硫,分别考察了矿浆pH、矿浆液固比、捕收剂添加量及浮选中水循环次数等因素对浮选指标的影响,并进行了理论分析,确定了钙法提钒尾渣浮选脱硫的优选工艺参数.试验结果表明,在矿浆pH为7、矿浆液固比为5:1、捕收剂添加量为0.6～0.8 kg/t的条件下,可获得w(S...     

民用飞机整机低温试验中断处理方法研究

根据民用飞机整机开展气候类实验室低温环境试验的工程需求与技术特点,对试验过程中可能出现的中断情况进行了归纳,并给出了相应的实验室中断处理方法 ,形成了实验室操作规程体系.结合相关试验标准归纳的主要中断原因,基于过试验、欠试验、责任故障、非责任故障等引起的中断情况,明确其可能造成的影响后果,并研究了中断后的处理方法 .按...     

Increasing collaboration between China and India in the environmental sciences to foster global sustainability

As the two largest countries by population, China and India have pervasive effects on the ecosphere. Because of their human population size and long international boundary, they share biodiversity and the threats to it, as well as crops, pests and diseases. We ranked the two countries on a variety of environmental challenges and solutions, illustrating quantitatively their environmental footprint and the parallels between them regarding the threats to their human populations and biodiversity. Yet we show that China and India continue to have few co-authorships in environmental publications, even as their major funding for scientific research has expanded. An agenda for collaboration between China and India can start with the shared Himalaya, linking the countries’ scientists and institutions. A broader agenda can then be framed around environmental challenges that have regional patterns. Coordinated and collaborative research has the potential to improve the two countries’ environmental performance, with implications for global sustainability.     

流化催化裂化烟气脱硫助剂的制备及其脱硫活性

采用溶胶-凝胶法制备锌铝助剂,该助剂于700℃焙烧后与流化催化裂化（FCC）催化剂进行机械混合,制得混合催化剂;在FCC烟气工业模拟装置上考察混合催化剂的脱硫活性,用混合催化剂的脱硫活性来反映锌铝助剂的脱硫性能。实验结果表明,氧化锌质量分数为10％的锌铝助剂的脱硫活性最佳,脱硫率达62．5％。采用红外光谱和X射线衍射（XRD）对锌铝助剂的脱硫机理进行了研究,红外分析结果表明,弱的L酸中心有利于锌铝助剂脱硫,XRD分析结果表明,锌铝助剂在锌铝尖晶石结构尚未完全形成时,存在较多的晶格缺陷,能够有效地吸附烟气中的SOx,将其转化为H2S。     

CO2资源化利用的现状及前景

介绍了CO2分离捕集最新工艺——电化学法、膜法、化学循环燃烧法的研究进展。评述分析了CO2的各种资源化应用前景：CO2气体用作生物碳源、辅助注射成型剂及有机物（如氨基甲酸酯、表面活性剂）合成原料等;液态CO2用于人造金刚石、热泵干燥、超临界CO2萃取及固体干冰冷喷射清洗等。CO2作为一种潜在的丰富碳源,应不断研发其新的应用领域,加快其工业化应用。     

环境标志计划与中国循环经济探讨

经济发展模式的优劣直接影响着社会发展形态的性质和方向。循环经济发展模式是实现低资源能源消耗、高经济效益、低污染排放,既生态经济。环境标志计划以生命周期评价为理论基础,对产品的环境行为进行控制,推动循环经济发展,环境标志计划是推动循环经济发展的动力。     

沈阳市有机农业的发展趋势

阐述了造成农产品污染的原因,进而提出发展有机农业的必要性,及国内外有机农业发展的现状和趋势,指出沈阳市发展有机农业的优势所在。     

A comparative analysis of predictors of sense of place dimensions: attachment to, dependence on, and identification with lakeshore properties

Sense of place can be conceived as a multidimensional construct representing beliefs, emotions and behavioural commitments concerning a particular geographic setting. This view, grounded in attitude theory, can better reveal complex relationships between the experience of a place and attributes of that place than approaches that do not differentiate cognitive, affective and conative domains. Shoreline property owners (N=290) in northern Wisconsin were surveyed about their sense of place for their lakeshore properties. A predictive model comprising owners' age, length of ownership, participation in recreational activities, days spent on the property, extent of property development, and perceptions of environmental features, was employed to explain the variation in dimensions of sense of place. In general, the results supported a multidimensional approach to sense of place in a context where there were moderate to high correlations among the three place dimensions. Perceptions of environmental features were the biggest predictors of place dimensions, with owners' perceptions of lake importance varying in explanatory power across place dimensions.     

Discovering meaningful information from large amounts of environment and health data to reduce uncertainties in formulating environmental policies

This study uses knowledge discovery concepts to analyze large amounts of data step by step for the purpose of assisting in the formulation of environmental policy. We performed data cleansing and extracting from existing nation-wide databases, and used regression and classification techniques to analyze the data. The current water hardness in Kaohsiung, Taiwan contributes to the prevention of cardiovascular disease (CVD) but exacerbates the development of renal stones (RS). However, to focus on water hardness alone to control RS would not be cost effective at all, because the existing database parameters do not adequately allow for a clear understanding of RS. Analysis of huge amounts of data can most often turn up the most reliable and convincing results and the use of existing databases can be cost-effective.