徐州市发展循环型经济的必要性研究

循环经济理论是上个世纪末环境革命的产物。循环经济要求以“减量化(Reduce)、再使用(Reuse)、再循环(Recycle)”的3R原则为社会经济活动的准则。文章概略地介绍了循环经济的起源和内涵,分析了循环经济应用的3个层面,指出了建立循环型经济是徐州市推进可持续发展的战略选择,并提出了徐州市建立循环经济的几点建议。     

大树杜鹃Rhododendron protistum var.giganteum和蓝果杜鹃Rhododendron cyanocarpum的濒危原因研究

大树杜鹃ＲｐｒｏｔｉｓｔｕｍｖａｒｇｉｇａｎｔｅｕｍＦｏｒｒｅｓｔｅｔＴａｇｇＣｈａｍｂｅｎｉａｉｎ和蓝果杜鹃ＲｃｙａｎｏｃａｒｐｕｍＦ．Ｗ．Ｓｍｉｔｈ被定为国家三级保护植物［１］。本文对这两种保护植物从资源调查、原产地的土壤分析、种子繁殖和贮存方式、异地保护和异地栽培条件下幼苗生长等４个方面作了濒危原因研究。研究结果表明：大树杜鹃应就地和异地保护并用，蓝果杜鹃则应采取就地保护为宜。     

燃煤锅炉烟气脱硫技术选择探讨

简要介绍了国内外锅炉烟气脱硫技术的发展状况、目前国内外典型的烟气脱硫技术、所建装置运转状况，引进技术在国内建设的装置应用情况等，对不同工艺之间的技术优劣及工业应用条件等进行了对比分析，并提出了一些个人观点，以期为国内的用户和科研单位决策提供参考。     

旅游踩踏对土壤微生物生物量碳、氮、磷的影响

为了探明旅游活动对张家界国家森林公园土壤微生物活性及多样性的影响,保护土壤生态平衡及合理开发自然保护区提供理论依据,进行了旅游踩踏对土壤微生物生物量碳、氮、磷的影响研究.结果表明,在所设的3个试验区中,0～5cm土壤层的微生物生物量碳、磷受到旅游踩踏的影响最严重,5～15cm土壤层的微生物生物量碳、磷受到旅游踩踏的影响较严重,而15～25cm土壤层的微生物生物量碳、磷受到旅游踩踏的影响最轻,旅游踩踏对所设3个试验区中3个层次土壤的微生物生物量碳、磷的影响均达到了显著水平(p＜0.05).从旅游踩踏对3个土壤层的微生物生物量氮的影响程度来看,0～5cm土壤层的微生物生物量氮受到的影响最严重,5～15cm土壤层的微生物生物量氮受到的影响较严重,而15～25cm土壤层的微生物生物量氮受到的影响最轻,背景区与缓冲区15～25cm土壤层的微生物生物量氮差异没有达到显著水平.说明张家界国家森林公园土壤微生物遭到了旅游踩踏的破坏,抵御外界干扰的能力已受到了旅游踩踏的破坏.     

政策环境影响评价与公众参与——国家有毒化学品立法EIA中的公众参与

阐明在我国开展政策EIA的必要性,从可持续发展的角度探讨政策EIA中公众参与的目的、意义、方法和特点,并介绍和分析国家有毒化学品立法EIA开始阶段中的公众参与。     

长江,嘉陵江重庆段国控监测点位相关性分析

通过对长江、嘉陵江重庆段国控监测点位十年监测资料的分析，考察了监测点位间的相关性，从而论证了监测点位布设的合理笥及存在的问题，提出了一些改进意见。     

Enzymatic degradation of poly([R,S] β-hydroxybutyrate)

The synthetic analogue of a bacterially produced polyester, poly(-hydroxybutyrate) (PHB) was synthesized from racemic -butyrolactone using anin situ trimethyl aluminum-water catalyst. The polymer was fractionated into samples differing in molecular weight and isotactic diad content. The latter was closely related to degree of crystallinity. The biodegradation of these fractions were examined by monitoring mass loss over time in the presence of anAlcaligenes faecalis T1 extracellular bacterial poly(-hydroxybutyrate) depolymerase. The fraction with high isotactic diad tacticity content showed little or no degradation over a 50 hour incubation period, whereas the fraction of intermediate isotactic diad content degraded in a continuous steady fashion at a rate that was less than that for bacterial PHB. The low isotactic diad fraction underwent a rapid initial degradation, followed by no further mass loss. The presence of stereoblocks in the polymer structure of the various fractions was an influence on the degree of susceptibility towards degradation and is related to sample crystallinity.     

The 'who' and 'what' of training far disaster relief

This paper defines the various levels within government, the voluntary agencies and the community which might benefit from training and makes suggestions as to where the emphasis should be placed. It points out that training programmes should be designed to meet the expressed needs of a particular group of trainees as well as be related to the current or potential disaster situation.     

Counter-disaster training in developing countries

This paper discusses both the need for training within a wider context of community disaster preparedness and the major alternatives in methods of training. Emphasis is placed on the importance of compatibility between the resources within a given country and appropriate training programmes.     

地层塌陷的灾害及其防治研究中的关键问题

针对矿山开采沉陷的研究现状和生产实践的需要，提出了地层塌陷防治研究中拟解决的关键问题：岩体的工程属性、地层塌陷的力源、塌陷特征、防治措施，及解决途径；同时还论述了本学科的发展前景。