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By fingerprinting two of Mute Swan populations in Britain with HaeⅢ and pSPT19.6,it has been found that interpopulation variation is greater than intrapopulation variation ,and that the variability of minisatellites is higher in Lothian population than that in Abbotsbury population with regard to the Mme Swan.

用酶HaeIII和探针pSPT19.6分析了分布在英国的疣鼻天鹅种的两个群体(洛锡安群体和阿伯茨伯里群体)的DNA指纹图，结果表明两群体之间的遗传变异性大于群体内的遗传变异性；洛锡安群体内小卫星的变异程度较高。

This thesis developed physics model of radiant panel heating and cooling room based on previous studies. Computational fluid dynamics software FLUENT was applied to study the thermal environment of radiant panel heating and cooling room. The distributions of temperature and velocity of rooms of radiant floor heating and cooling, radiant ceiling heatingand cooling and radiant wall heating and cooling are gained.

本文在总结前人经验的基础上，分别建立了辐射板采暖和辐射板供冷房间的物理模型，利用商业软件Fluent对采用辐射板采暖系统和辐射板供冷系统房间内的热环境进行了模拟研究，分别得到了辐射板布置在地板、墙面和顶板三种不同方式下的采暖和供冷房间内的温度和速度分布情况。

The property of its randomization has great potential for distributed network systems, and it supports the membership query with a small false positive rate, which is the probability that an element was not in the data set but Bloom filter reported it is.

它的随机特性具有相当大潜力被应用在分散式网路系统，并且支援系统内的会员资格询问加上较低的错误判正率。布隆过滤器的错误判正率是一种事件发生机率，代表一个不属於资料集合的元素被布隆过滤器判定为属於资料集合内。

Though it can improve the plant tolerance using the CaMV35Spromoter to express the related genes in stress environment, the expression of resistant proteinwastes the energy in normal environment and the accumulation of the protein can inhibit the plantsnormal metabolism, causing the morphology change of the plant, resulting in growth anddevelopment retardment of transgenic plants.

利用组成型表达启动子控制抗性相关基因的过量表达虽然可以提高植物在逆境条件下的抗逆能力，但正常环境条件下细胞内组成型过量表达抗逆蛋白则是一种能量浪费，且正常环境下细胞内的抗逆蛋白长时间过量的积累可能妨碍植物的正常生长代谢，引起植物的形态发生改变，造成转基因植物生长发育严重停滞甚。

The Chitinase of Saccharomyces cerevisiae(CTS1-2) is an Endochitinase which is endogenous in Saccharomyces cerevisiae. Its recognition and slipt site lies in the β-1,4 glucosidic linkage of homopolymer. Included in the amino acid sequence from N-terminal to C-terminal of the Saccharomyces cerevisiae chitinase are signal peptide sequence, catalytic domain, binding domain and a C-terminal shorten region.

酿酒酵母几丁质酶(Chitinase，CTS1-2)是一种来自酿酒酵母的内切几丁质酶，它的酶切位点位于其同聚物内的β-1，4连接的糖苷键，酶蛋白分子结构从N端到C端依次为信号肽、几丁质催化区、几丁质结合区以及一个短的C末端区。

This paper analyzes on the two new expression form s of the basic capitalist contradictions, the expansion of the basic capitalist contradictions in the whole world makes the contradiction between the proletariat and the bourgeoisie in one single country is transformed into the opposition and straggle between the developing countries and the developed countries in the whole world, an.

文章分析了资本主义基本矛盾两种新的表现形式：资本主义基本矛盾在全球范围内的扩展，使一国内无产阶级与资产阶级的矛盾，演变为世界范围内发展中国家与发达国家之间的对立和斗争；资本主义基本矛盾在全球的扩展给人类的可持续发展造成了严重威胁。

A new multi-degree of freedom ultrasonic motor using in-plane deformation of lead zirconate titanate elements was introduced.

介绍了一种新型基于压电陶瓷平面内应变特性的多自由度超声波电机，该电机通过两个平面内的弯曲振动模态的叠加实现转子绕Z轴的转动；并利用伸缩振动模态分别与上述弯曲振动模态叠加实现转子绕X轴和绕Y轴的转动。

Nutrition solution culture, ICP-AES, the differential centrifugation technique and sequential chemical extraction method, suppression subtractive hybridization , RAPD were used in this thesis to study the mechanisms of copper tolerance and accumulation by Commelina communis grown in copper mine deposit which was reported to be a Cu hyperaccumulator, compared with C.

论文以本实验室报道的生长于矿山上的铜超富集植物鸭跖草和生长于正常土壤中的鸭跖草为试验材料，分别运用溶液培养法、ICP-AES元素测定技术、差速离心法和化学试剂逐步提取法、抑制消减杂交技术、RAPD技术研究了矿山和非矿山两种生境鸭跖草对铜的耐性和吸收积累的差异，两种生境鸭跖草在铜胁迫下养分吸收和积累的差异，两种生境鸭跖草在铜胁迫下生理反应的差异，以及铜在鸭跖草细胞内的分布及结合形态研究，矿山鸭跖草差异表达的cDNA克隆，铜对鸭跖草种群遗传分化的影响，从这几个方面探讨了矿山鸭跖草对铜的耐性机理。

Nutrition solution culture, ICP-AES, the differential centrifugation technique and sequential chemical extraction method, suppression subtractive hybridization , RAPD were used in this thesis to study the mechanisms of copper tolerance and accumulation by Commelina communis grown in copper mine deposit which was reported to be a Cu hyperaccumulator, compared with C. communis grown in normal soil. Several aspects were examined, including: difference of copper tolerance and accumulation between C. communis grown in copper mine deposit and that grown in normal soil; difference of growth and nutrient accumunation between C. communis grown in copper mine deposit and that grown in normal soil under copper treatment; physiological differences between between C. communis grown in copper mine deposit and that grown in normal soil under copper treatment; subcellular distribution and chemical forms of Cu in C. communis; identification of cDNA fragments differentially expressed in C. communis grown in copper mine deposit; genetic diversity and copper tolerance of C. communis, tolerance mechanisms to copper in C. communis are discussed.

中文题名鸭跖草对铜的耐性机理和富集特征研究副题名外文题名 Mechanisms of Cu tolerance and accumulation by Commelina communis 论文作者廖斌导师蓝崇钰束文圣学科专业环境科学研究领域\研究方向学位级别博士学位授予单位中山大学学位授予日期2003 论文页码总数128页关键词重金属污染植物修复超富集植物土壤污染铜污染鸭跖草馆藏号BSLW /2003 /X53 /12 论文以本实验室报道的生长于矿山上的铜超富集植物鸭跖草和生长于正常土壤中的鸭跖草为试验材料，分别运用溶液培养法、ICP-AES元素测定技术、差速离心法和化学试剂逐步提取法、抑制消减杂交技术、RAPD技术研究了矿山和非矿山两种生境鸭跖草对铜的耐性和吸收积累的差异，两种生境鸭跖草在铜胁迫下养分吸收和积累的差异，两种生境鸭跖草在铜胁迫下生理反应的差异，以及铜在鸭跖草细胞内的分布及结合形态研究，矿山鸭跖草差异表达的cDNA克隆，铜对鸭跖草种群遗传分化的影响，从这几个方面探讨了矿山鸭跖草对铜的耐性机理。

Water and template were removed from intercrystalline pores at lower temperature, which had lower ideal selectivity and lower concentration.

对膜在不同的焙烧温度下，单组份气体N2、H2、n-C4H10、i-C4H10的渗透通量进行了测量，结果表明在焙烧过程中，膜内主要有两种不同的孔产生，低温下晶间孔内的水份和模板剂首先逸出，这些孔对气体的选择性不大，但它们所占比例也不大。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。