角动量守恒仪与角动量守恒定律的实验验证

本文介绍了我们最近研制成功的角动量守恒仪以及在定量验证角动量守恒定律实验中的应用.在我系实验室首次对学生开出了这一新实验,它解决了师专普物力学实验教学中长期存在的一个难题.     

The Application of Bioassays in Risk Assessment of Environmental Pollution

Increased contamination of the environment by toxic chemicals has resulted in the need for sensitive assays to be used in risk assessment of polluted sites. Traditional tests are useful to detect and measure concentrations of chemicals in the environment and in tissues. However, physicochemical assays possess deficiencies that impair their use in evaluating complex environmental contamination. We have developed cytogenetic procedures, including chromosomal, micronucleus, and flow cytometric assays, to assess the mutagenic damage of petrochemicals and low-level radioactivity on indigenous terrestrial and aquatic wildlife populations. These procedures are sensitive to the perturbation of DNA that results from exposure to mutagenic contaminants in both field and laboratory studies. The use of natural populations of animals in biomonitoring, combined with traditional chemical assays, will ultimately provide sufficient information to estimate the risk to human health and environmental quality from anthropogenic pollution.     

关于我国节约能源的法律思考

能源是人类社会进步的重要物质,随着经济的发展,能源短缺的矛盾将会进一步加剧,节约能源和寻找新的能源则是解决这一问题的有效方法,而法律的保障亦是不可或缺的。     

对我国城市节水问题的思考

本文对节水的内涵、意义进行了阐述 ,分析了国内外节水措施的实施情况 ,对我国城市节水工作提出了建议。在目前形势下 ,必须研究节水机制 ,树立节水意识 ,建设节水型城市 ,才能保证我国水资源的可持续利用     

变频调速技术在中央空调系统改造中的应用和节能效果分析

通过对中央空调系统运行过程的分析,指出能耗大的根本原因.介绍了变频调速技术在中央空调系统改造中的应用,通过计算说明其节能效果和经济效益.     

户部山古建筑群文化遗址保护与开发现状

户部山是徐州城市重要的古建筑群文化遗址,户部山古建筑群文化遗址保护及再利用现状表明,建筑密度的合理性以及城市管理中的疏漏,是古建筑文化遗址保护和开发利用中需要关注的突出问题。历史街区的保护绝不是单纯意义上的保护,还必须将其纳入到现代生活的轨道上来,需要改善基础设施、公共服务设施、环境景观及建筑单体内部的空间组织设施条件。不仅要强调保护历史元素和信息,也需要强化历史元素和信息在经济成长中所扮演的角色。     

油气生产建设对水土流失的影响及防治

针对油气生产水土流失问题,采用归纳分析的方法,分析了油气生产建设的不同阶段呈现的不同特点,不同阶段水土流失的影响差别较大,其中勘探对水土流失的影响较小,油田地面工程和管道工程建设对水土流失的影响大,开采对水土流失影响有限,长输管道运营对水土流失基本没有影响.油气企业通过加大资金投入、制定防治技术规范、明确防治责任、加强管理等防治措施,取得了较好的防治效果.     

关于“十二五”时期我国节能环保体制创新的思考

体制创新是节能环保事业顺利推进的制度保障。我国经济已经进入高速发展时期,传统的能源利用方式已对环境造成了极大的压力,有的地方甚至突破了其生态承载力,经济社会发展出现不可持续现象。总体而言,我国节能环保体制需要从宗旨定位、前提、关键、基础环节和出发点五个方面进行创新。     

The new ‘sustainable communitarian’ logging schemes and their critique inside multiple-use conservation areas in the Brazilian Amazon: preliminary notes

Deforestation has risen sharply in Brazil since 2012, and conservation areas are facing increased pressure. This article studies the rise of so-called ‘sustainable’, ‘communitarian’, and/or ‘cooperative’ logging schemes inside multiple-use conservation areas in the Amazon. The findings, based on fresh field research in Acre and Pará, reveal conflicts, problems, and risks associated with logging schemes, although they are portrayed in the international timber trade as certified and socio-environmentally sustainable solutions that help conservation. However, the expansion of logging presents a danger for curtailing forest degradation, fires, and corruption that is linked to the fast returns from sale of timber, especially inside conservation areas that have been mostly intact until now. There is an urgent need to change the strategy of promoting logging as a key source of income for forest-dwellers, and a need to change the policies allowing the expansion of ‘sustainable logging’.     

我国建筑节能政策研究述评

在推进建筑节能工作过程中,建筑节能政策是关键,因此学术界对建筑节能政策的研究十分重视。近年来,我国建筑节能政策的研究已成学术热点,随着研究的不断深入,我国建筑节能政策研究的内容不断拓展,方法呈现由定性到定量的转化。分析和把握我国建筑节能政策研究的特点,有利于提高我国建筑节能政策的研究水平,进而推进我国的建筑节能工作。