中国循环经济基本法立法架构研究

循环经济基本法立法架构的好与坏，不仅关系循环经济基本法的制定与出台，而且影响循环经济基本法的理解和执行。基于此。就循环经济基本法立法架构展开了综合研究，以期有助于中国循环经济基本法的制定与执行。在比较研究国外循环经济基本法立法架构与综合分析中国循环经济基本法立法架构研究现状的基础上，深入探讨中国循环经济的基本内涵以及中国循环经济基本法的基本定位与基本内容，进而提出一种新的中国循环经济基本法立法架构。从目前实践看，中国特色循环经济的内涵可以概括为是对生产和消费活动中物质能量流动方式的管理经济。中国循环经济建设应该从适度生产系统、适度消费系统和回收利用系统三个环节着手。根据经济基础决定上层建筑的基本原理，中国循环经济基本法作为一部环境友好型经济法以及具有一定强制性与制裁性的促进法，应当按照适度生产-适度消费-回收利用这条主线进行立法架构。     

碧塔海自然保护区景观空间格局研究

在地理信息系统(GIS)与遥感(RS)技术的支持下,选择多种定量指数对滇西北高原典型湿地区———碧塔海自然保护区进行了空间格局分析研究。通过分析,揭示了研究区景观空间格局的结构和特征及受扰程度,为研究区的湿地资源利用与保护提供了科学依据和决策支持。     

优化产业结构,加速发展经济──对保康县“四大产业”措施的分析

根据保康县提出的四大经济产业开发措施，本文分析了四大产业开发的背景、意义和原则．     

Sea Otters (Enhydra lutris L.) of Bering Island, the Commander Islands: Age and Sex Composition of Dead Animals and Spatial Distribution

Animal censuses and assessment of mortality in the sea otter subpopulation of Bering Island (the Commander Islands) have shown that indices of seasonal mortality may be used as a criterion for estimating well-being of this animal group. In 1999, the subpopulation of Bering Island entered a phase of stabilization of its spatial, age, and sex structure, with the stabilization process proper taking approximately three years after a peak of mortality. Mortality in the course of this process proved to be relatively high in age groups older than eight years but insignificant among middle-aged reproductive animals. As the age and sex structure of the insular group varies during the year and in different coastal areas, the data obtained by collecting dead animals cannot be used for estimating the structure of the whole population.     

具有特定拓扑结构的聚烯烃高分子的合成

具有特定拓扑结构的聚合物合成一直是高分子合成化学领域的一个重要研究内容，设计和合成具有特定拓扑结构的聚烯烃高分子更是进一步发掘聚烯烃这一量大面广的通用高分子材料的性能、开拓其新的应用领域的重要手段。在催化剂和聚合方法的研究取得重要进展的基础上，近年来国际上在合成不同拓扑结构（包括嵌段、接枝、梳型和星型）的聚烯烃高分子研究方面发展也较快，所合成的部分高分子亦显示出独特的功能性。本文首先综述不同拓扑结构聚烯烃高分子合成的研究现状，然后结合近期化学所在此领域的研究进展，提出独特的以苯乙烯封端反应性聚烯烃为模块构建拓扑结构聚烯烃的新思路。     

On Characteristics of Production and Destruction Processes in Lowland and Mountain Tundras of the Extreme North

Parameters of the production and destruction processes in different types of tundras are compared. It is shown that there is a fairly high degree of correspondence between the structure of tundra communities and the ecotopes occupied by them. On the other hand, typologically similar lowland and mountain tundras markedly differ in the functional respect. The rate of decomposition processes is higher under environmental conditions of the mountain tundra belt.     

复合絮凝剂聚硅酸铝铁的形貌结构及性能研究

向聚硅酸中引入铝盐、铁盐制得聚硅酸铝铁(PFAS)复合絮凝剂,用电子显微镜观察分析了不同Al/Fe/Si摩尔比的PFAS形貌,用红外光谱研究了其中铝离子、铁离子与聚硅酸的相互作用情况,并对其絮凝性能进行了考察.结果发现:聚硅酸铝铁的形貌均为枝杈状聚集态,并带有分形特征,完全不同于聚硅酸的球形或椭球形,也不同于聚铝、聚合铝铁的晶形;Al/Fe/Si摩尔比对形貌有较大影响.红外光谱证实了PFAS中部分铝离子、铁离子及水解络合铝离子、铁离子可与共存的聚硅酸起螯合(络合)反应生成铁铝硅聚合物,PFAS的絮凝性能高于聚硅酸铝、聚硅酸铁.     

Australian junior exploration floats, 2001–06, and their implications for IPOs

An analysis of 179 junior exploration floats, listed on the Australian Securities Exchange (ASX) between July 2001 and June 2006, helped to build a basic understanding of the strategy and business structure of these companies. The “typical” junior explorer raised A$4 million at initial public offering (IPO) to finance a 2-year, mainly greenfields exploration program. The capital raised at IPO entitled its investors to approximately half of the company, with the balance in the hands of the promoters, vendors and/or seed capital investors. Of the A$4 million raised at IPO, it intended to spend approximately two-thirds on exploration, while the remainder was absorbed in corporate overheads and the costs of the IPO. Once these were paid, ongoing corporate overheads averaged approximately 28% of its total operational expenditure. However, given an average total annual expenditure of approximately A$2.6 million, most juniors held insufficient capital reserves to meet operational costs beyond a time frame of 2 years. As at October 2006, 9% of the companies were in the process of mine construction, whereas 6% had made it to producer status. The lead time from listing to production ranged from 1.5 to 53 months, giving a median of 28 months.     

大型电站锅炉的特点及检验重点

通过分析大型电站锅炉的结构特点说明该类锅炉检验的重点。对于大型电站锅炉的结构特点不同于其他锅炉的结构特征进行介绍。目前，大型电站锅炉多数是煤粉炉，这种形式的锅炉主要是结构复杂，但是锅炉效率高，所以应用范围广泛。