顾及生态代价的人文发展城乡差距估计

针对传统人文发展指数计算未考虑生态代价的弊端,将生态足迹指数导入其中,提出一个植入生态代价因素的生态—人文发展指数分析框架.对我国1990～2006年分城乡的生态—人文发展指数进行估算,从生态经济和人文发展的视角全面估计我国城乡差距问题.结果表明,考虑生态代价的城乡差距比通常意义上的城乡差距要小,其原因在于城镇人文发展的生态代价较农村偏高.     

The atyid shrimp (Crustacea: Decapoda: Atyidae) rostrum: phylogeny versus adaptation,taxonomy versus trophic ecology

Cave shrimps of the subgenus Troglocaris (Atyidae), exhibit high variability in rostral length and dentition. In shrimp populations that co-occur with the amphibian predator Proteus anguinus, longer rostra armed with more numerous teeth are recorded. These shrimps are also larger than those living in a presumably Proteus-free environment. Discrepancies between molecularly established phylogenetic relationships and distributions of rostral length, as well as body size, directed our search towards possible environmental influences. These discrepancies suggest that rostral shape is not a reliable taxonomic character in some generic and many specific diagnoses in Atyidae. We discuss some taxonomic consequences of sexual and ontogenetic rostral differences with regard to the molecular phylogenetic tree. In preliminary laboratory observations, no frontal attack by Proteus was successful on shrimps with long rostra. Proteus also needed more time to swallow shrimps with long rostra.     

Nicotinamide/nicotinic acid mononucleotide adenylyltransferase, new insights into an ancient enzyme

Nicotinamide/nicotinic acid mononucleotide adenylyltransferase (NMNAT) has long been known as the master enzyme in NAD biosynthesis in living organisms. A burst of investigations on NMNAT, going beyond enzymology, have paralleled increasing discoveries of key roles played by NAD homeostasis in a number or patho-physiological conditions. The availability of in-depth kinetics and structural enzymology analyses carried out on NMNATs from different organisms offer a powerful tool for uncovering fascinating evolutionary relationships. On the other hand, additional functions featuring NMNAT have emerged from investigations aimed at unraveling the molecular mechanisms responsible for complex biological phenomena such as neurodegeneration. NMNAT appears to be a multifunctional protein that sits both at the core of central metabolism and at a crossroads of multiple cellular processes. The resultant wealth of biochemical data has built a robust framework upon which design of NMNAT activators, inhibitors or enzyme variants of potential medical interest can be based.     

城乡水务一体化管理综合评价与实证分析——以贵州城乡水务一体化为例

城乡水务一体化管理模式是处理涉水事务的行之有效的方式,它实现了由一个部门对地表水与地下水、水量与水质的统一规划与调度.该模式是一种全新的水务管理体制,也是我国管理涉水事务的一种发展趋势.目前我国大部分地区都基本实现了城乡水务一体化管理,但各个地区发展的程度有所不同.以贵州省为例,综合考虑城乡水务一体化管理的基本原则和目标,采用层次分析法对其管理现状进行综合评价研究.     

论安全生产的科学技术与法律的关系

一切优秀成果的全方位的突破和更新都离不开科学技术工具,也离不开理论本身的发展。"法律与科技"问题是法理学重要的构成部分,有关科技的法律也已成为法学的一个重要分支。安全生产领域既包括科学(自然科学、社会科学)的理论,也包括众多的边缘和交叉内容,并在当代展现出了现实性、多样性的特点。当然,对安全生产这一大科学领域的多样性、现实性的探讨并不是简单地采纳新技术或简单地引入即可实现的,而是需要注重对科学、技术、文化、意识、法律等多方面之间的矛盾和互动关系,并关注他们的实践,从而推动安全生产成为一门真正的科学。     

PBNA： An Improved Probabilistic Biological Network Alignment Method

Biological network alignment is an important research topic in the field of bioinformatics. Nowadays almost every existing alignment method is designed to solve the deterministic biological network alignment problem.However, it is worth noting that interactions in biological networks, like many other processes in the biological realm,are probabilistic events. Therefore, more accurate and better results can be obtained if biological networks are characterized by probabilistic graphs. This probabilistic information, however, increases difficulties in analyzing networks and only few methods can handle the probabilistic information. Therefore, in this paper, an improved Probabilistic Biological Network Alignment（PBNA） is proposed. Based on Iso Rank, PBNA is able to use the probabilistic information. Furthermore, PBNA takes advantages of Contributor and Probability Generating Function（PGF） to improve the accuracy of node similarity value and reduce the computational complexity of random variables in similarity matrix. Experimental results on dataset of the Protein-Protein Interaction（PPI） networks provided by Todor demonstrate that PBNA can produce some alignment results that ignored by the deterministic methods, and produce more biologically meaningful alignment results than Iso Rank does in most of the cases based on the Gene Ontology Consistency（GOC） measure. Compared with Prob method, which is designed exactly to solve the probabilistic alignment problem, PBNA can obtain more biologically meaningful mappings in less time.     

初道屏蔽效应对低能电子碰撞H(e,2e)反应的影响

考虑初道屏蔽效应,研究了低能电子碰撞H(e,2e)的反应过程.计算了共面非对称几何条件下能量为27.2 eV的入射电子碰撞H(e,2e)反应的三重微分截面(TDCS),将其计算结果与3C、DS3C和CDS3C模型所得结果及实验数据进行了比较,结果表明CDS3C模型能对上述碰撞过程成功描述,改善了与实验结果的符合程度.     

区域城乡协调发展的综合评价——以宁波为例

城乡之间的协调表现在很多方面.要全面、客观地评价一个地区的城乡协调发展情况,必须建立科学合理的评价指标体系,选择恰当的评价方法.本文结合宁波市的实际情况,讨论了城乡协调发展的内涵和目标,提出了城乡协调发展评价指标体系和方法,揭示了宁波市近年城乡协调发展方面存在的问题和未来可能的变化态势.     

反气相色谱法研究共聚酯的表面性质及共混体系的相容性

采用反气相色谱法(IGC)测定了对苯二甲酸丁二醇酯-己内酯(PBT-PCL)多嵌段共聚物与溶剂的Flory-Huggins相互作用参数和色散成分的表面能γsd,研究了温度对γsd的影响.同时,通过探针分子测得聚氯乙烯(PVC)与PBT-PCL共混时的相互作用参数χ为-0.796,结果表明,该共混物是相容的.     

均匀重力场中弱相互作用费米气体的低温性质

根据半经典近似法和局域密度近似法,分别研究了均匀重力场中理想费米气体和弱相互作用费米气体的低温性质,得到了一些重要热力学量的一般解析表达式.对自由费米体系,均匀重力场中理想费米体系,均匀重力场中弱相互作用费米体系进行了比较,探讨了重力势场及粒子间的相互作用对体系性质的影响.