2-己酮糖的还原特性概述

2-已酮糖有四种同分异构体,分别是山梨糖、塔格糖、阿罗酮糖和果糖.酮糖被还原时理论上生成一对等量的差向异构体糖醇.果糖是人们最了解的典型的也是自然界中存在最普遍的2-已酮糖.本文从解析果糖的一些特性为切人点介绍2-已酮糖的一些共同的还原特性.     

The Environmental Outcome of Emissions-intensive Economic Growth: A Critical Look at Official Growth Projections for Sweden up to the Year 2000

Implications for carbon dioxide, sulphur dioxide and nitrogen oxides emissions from the Swedish government's medium-term economic projections are assessed, considering Sweden's environmental goals. Data from the first environmental accounting matrix of Sweden are exploited within the framework of the interindustry model to give emission multipliers for various components of aggregate demand. In view of these emission multipliers, it is evident that the outlined macro-economic development does not conform with Sweden's environmental goals. The oil price and the structural changes assumed in the economic projections stress still further the need for strong environmental policy measures to attain the emission goals. The allocation of total expenditure is shown here to be a critical factor for bringing down the emissions to accepted levels.     

Here come the men in black Technology and anxiety in the postmodern age

This review of the film Men in Black argues that what used to be alarming in the science fiction genre has now become its main source of humour. As a reactionary response to the dystopic X-Files, MiB is an elaborate parody which seeks to recuperate ideological ground lost by the X-Files' examination of gender and technology in contemporary culture. Anxiety about the roles of technology, gender and the state are replaced by humour about the notion of anxiety itself. Anxious we may be at the close of the millenium, but MiB tells us to just laugh it all away.     

Global climate change and the research on technical paths of Chinese steel and iron industry against the climate change

The article introduces the impact and essence of climate change and analyzes the attitudes and measures of international community to fight global climate change. From the perspectives of Clean Development Mechanism, Voluntary Carbon Market, energy audit and potential carbon asset investment, this paper discusses the feasible paths of Chinese steel ＆ iron industry against global climate change and summarizes the main fields of adapting to the development of CDM project activities.     

内外经济平衡中存在的矛盾

近年我国贸易顺差不断扩大,同时国内经济又出现投资过热,商务部将"调投资、促消费、减顺差"定为2007年我国经济工作的三大着力点,以平衡内外经济.但是"减顺差"与"调投资"和"促消费"都有一定的矛盾.从平衡贸易角度看,在三者中"促消费"是核心,但也是最难的.政府对公共基础设施的投资如果能够适当扩大,还是有利于减少贸易顺差的.     

How warm is the corporate response to climate change? Evidence from Pakistan and the UK

In response to growing consensus among scientists and governments to act fast to avoid dangerous impacts of climate change, many industries have started to prepare for a carbon‐constrained world. However, this response is far from being uniform. Often action is predicated on economic, technological, organizational and institutional drivers and barriers, which vary between countries and across industrial sectors. In order to understand the effectiveness of industry response, it is therefore important to analyse corporate response across different sectors in different countries. Focusing on the nine most energy‐intensive and greenhouse gas (GHG) emitting industrial sectors, this paper compares corporate responses to climate change in Pakistan and the UK. By analysing the divergence of strategies adopted by industries across different sectors in two countries, the paper examines the key factors influencing corporate adoption and implementation of GHG reduction and energy‐efficiency strategies in Pakistan and the UK. Copyright © 2007 John Wiley & Sons, Ltd and ERP Environment.     

南欧3国社会救助制度反贫困脆弱性：经验分析和比较反思

对南欧的希腊、意大利和西班牙3国的最低收入计划的反贫困经验进行了讨论，从相对贫困率变化的角度看，南欧3国社会救助制度对于贫困减少仍存在脆弱性。同时，分析、对比了中国城市最低生活保障制度对于城市贫困减少的效果，结果表明，就相对贫困而言，贫困减少效果目前还较为有限。最后，就制度设计、政策支持和价值取向等方面提出了思考。     

结构调整与技术进步对碳排放影响的空间效应分析

对1997～2012年中国分省域碳排放的数据进行详细测算,发现碳排放具有明显的空间相关性。利用空间面板数据模型分析发现,单位国内生产总值（GDP）能耗和能源结构碳强度对碳排放的影响较为突出。通过检验发现建立空间杜宾模型是最优的。结论：进一步加快产业结构优化升级,培育优势创新产业集群,推广清洁技术的利用,改善以煤炭为主不合理的一次能源消费结构,并充分考虑区域间的集聚效应,在碳减排活动中充分加强区域协作。     

中国碳排放强度影响因素的实证研究

运用计量经济模型从能源强度、产业结构和能源结构3个方面研究了影响中国碳排放强度的因素,研究表明,能源强度的提高能够使碳排放强度上升,第二产业、第三产业以及非化石能源比重的提高能够使碳排放强度下降,并对2010年和2011年中国碳排放强度变化做了分解,研究表明中国碳排放强度的下降主要是由能源效率减排引起的,基于以上研究提出当前应优化产业结构和稳步提高非化石能源比重等建议,对于政府制定节能减排政策具有一定的借鉴意义。     

基于双尺度低NO_x燃烧技术的电站锅炉改造

近年来环境污染问题日益严重,其中电力企业在NOx排放方面对环境的污染尤为突出。为减少环境污染,针对某电厂原有锅炉进行燃烧器的改造,以降低电厂NOx的排放。依据设计方案,以基于炉膛空间尺度和煤粉燃烧过程尺度的双尺度低NOx燃烧技术,对电厂燃烧器进行改造。改造结果表明:基于双尺度低NOx燃烧技术改造后的电站锅炉,其NOx的排放显著降低。