研究

In upper soil permeability deformation of dam base Geology condition, trait of soil permeability and filtration are studied overall system, firstly through engineering geology method, hydrotechnic design and numerical model technique are introduced to studying and the methods break localization of geology study in Dongpinghu reservoir dam.

本文是首次以地质工程研究的角度，对东平湖水库围坝的地质环境背景，土的渗透特性和渗流特征进行较为全面系统的研究。研究过程中借鉴和引入了水工设计的思想和数值模拟技术，突破了地质工作在东平湖水库围坝研究中仅仅是工程地质条件勘察的局限性。

This thesis, basing on clinic experience and understanding of Tradional Chinese Medicial theory about tumor's etiological factors and side-effects of chemotherapy or radiation cure, studied total saponins of Sanguisorba officinal is effects and mechanisms of action on hypocytosis induced by radiation and chemical.

本课题根据中医理论对肿瘤及放化疗毒副作用病因和病机的认识，结合中医临床经验，以传统止血中药地榆为研究对象，在已有的研究基础上针对放、化疗致血细胞减少症，采用现代药理学研究方法和细胞学及分子生物学研究方法，深入探讨地榆总皂苷促血细胞生成的作用及分子机理。

The current theory and application of Al-Si alloy mainly focus on the study of hypoeutectic and eutectic, therefore we systematically analyzed the modification process of hypereutectic Al-Si alloy based on the methods and results of predecessors. Several factors including the modification temperature, the content of modifier, the available holding time, the times of repeat melting , the casting temperature and the speed for cooling have been studied in order to understand its effects to the composition, function and performances of primary silicon and eutectic silicon.

中文摘要本文针对目前Al-Si合金相关应用和理论的研究多集中于亚共晶和共晶合金的情况，在前人的研究成果和研究方法的基础上，对过共晶Al-Si合金变质处理进行了较为系统的分析，研究了变质剂的成分配比、变质温度、变质剂的加入量、变质后的静置时间、浇注温度及冷却速度等因素对过共晶铝硅合金中初晶硅和共晶硅的大小、形状、数量和分布的影响。

The current theory and application of Al-Si alloy mainly focus on the study of hypoeutectic and eutectic, therefore we systematically analyzed the modification process of hypereutectic Al-Si alloy based on the methods and results of predecessors. Several factors including the modification temperature, the content of modifier, the available holding time, the times of repeat melting , the casting temperature and the speed for cooling have been studied in order to understand its effects to the composition, function and performances of primary silicon and eutectic silicon.

本文针对目前Al-Si合金相关应用和理论的研究多集中于亚共晶和共晶合金的情况，在前人的研究成果和研究方法的基础上，对过共晶Al-Si合金变质处理进行了较为系统的分析，研究了变质剂的成分配比、变质温度、变质剂的加入量、变质后的静置时间、浇注温度及冷却速度等因素对过共晶铝硅合金中初晶硅和共晶硅的大小、形状、数量和分布的影响。

Chinese aesthetic categories have their unique characteristics: from the point view of semiotic forms, they are imagerial; from the view point of logic, they are integrative; from the view point of dynamic evolution, they are derivative; and from the view point of theoretical aim, they are functional.

中国古代文论和美学研究经过近一个世纪的发展，目前范畴和范畴体系受到高度重视，被看作是&探索传统文学理论批评内在规律和本质特征的一个重要切入点&，甚至已成为学术界的一个&热点&[1 ] 。但在范畴研究中，历史梳理和各别研究相对容易一些，体系建构和综合研究则十分困难，因而后一方面的成果就比较缺乏。

Mainly introduce the concept, origin, developing cause of assets securilization, developing history of securilization in the countries and areas such as U. S. A., British, Australia, Japan, Hongkong, ect. Part three, includes Chapter four, five, six, and seven. Mainly study the effect to the development of our country's economy by carrying out banking assets securitization, the actuality of banks in our country, imminency and realistic meaning to carry out assets securitization, and talk about the feasibility of take housing mortgage loan as a cut-in point and reference meaning of dealing with bad assets of banks; the design of carrying out housing mortgage loan at present moment, and the feasibility, difficulties and problem of making experiment of bad assets securitization, the study of relevant policy such as law system, revenue system, finance system, supervising principle and so on, which needs to be studied and resolved in making experiment of banking assets securitization; all kinds of risks, risks estimate and providing measures needed in.

主要研究实施资产证券化对我国经济发展的影响，主要从银行资产证券化入手，研究我国银行的现状，进行资产证券化的迫切性和现实意义，探讨了我国从住房抵押贷款作为切入点的可行性以及对处理银行不良资产的借鉴意义；现阶段我国实施住房抵押贷款证券化的方案设计，以及进行不良资产证券化试点的可行性、难点和需要解决的问题；近期我国进行银行资产证券化试点需要研究和解决的法律制度、税收制度、财会制度、监管原则等配套政策研究；资产证券化面临的各类风险、风险评价和需要采取的防范措施。

Posterolateral Lumbar Intertransverse Process Spinal Arthrodesis With Composites Composed Of Recombinant Human Bone Morphogenetic Protein 2 And Allograft Or Xenograft; Or With Composite Consisted Of HA And Xenograft in rabbitsBackground: So far spine arthrodesis remains to be used in spine surgery.

中文题名rhBMP-2、HA及其复合物在兔腰椎后外侧融合的实验研究副题名外文题名论文作者杨发军导师马忠泰教授学科专业外科学研究领域\研究方向临床技能训练与研究学位级别博士学位授予单位北京大学学位授予日期2001 论文页码总数92页关键词骨形态发生蛋白异体骨移植脊柱融合异种骨移植馆藏号BSLW /2001 /R687 /42 背景：目前，脊柱融合手术被广泛地应用于脊柱外科领域，自体髂骨仍是被最常用的骨移植物，但是其有5％-35％的不融合率。

As a part of this key program from China Natural Science Foundation, this research focuses on the electrochemical reactions and oxidization products on the surfaces of jamesonite and marmatite, and on the change of their interfacial structures and their electrochemical mechanisms by various methods of thermodynamic, electrochemistry (such as Tafel, constant potential step, cycle voltammetry, AC impedance) and IR, UV spectra when the collectors, adjusting reagents act with the sulfide minerals in the flotation system so that the electrochemical conditions to float selectively the minerals can be decided.

本研究作为该国家自然科学重点基金项目的一部分，采用热力学、电化学(Tafel、循环伏安、恒电位阶跃和交流阻抗法)以及光谱等多种研究手段，集中研究了浮选体系中脆硫锑铅矿、铁闪锌矿表面的电化学反应及氧化产物，研究这两种矿物与捕收剂、调整剂相互作用时的界面结构变化及电化学机理，阐明了使药剂选择性捕收或选择性抑制这些硫化矿物的电化学条件。

In this way, the credibility of evidence is very important, so the second research question is how the credibility of evidence is achieved by using these main appraisal resources, that is, how the authenticity, relevance and legality of evidence are better proved through the employment of these main appraisal resources.with regard to the third research question, jef verschueren's adaptation theory, especially the three worlds, that is, physical world, mental world and social world, is used to explain why these main appraisal resources are used to better achieve the goals of courtroom participants.it is hoped that this thesis, according to the analysis of ten civil courtroom trial discourses, is going to shed some light on the study of courtroom trials from the perspective of linguistics, enrich the scope of application of appraisal theory and enlighten some scholars in the legal field.

由此可见，证据的可信度在民事法庭审判中是十分重要的，因此，本文的第二个研究问题就是法庭审判的各方是如何通过主要评价资源的应用来更好的说明己方证据的可信度以及对方证据的不可信的，即庭审中的各方是怎样通过使用主要的评价资源来达到证明己方证据的可信度的。对于第三个研究问题，该论文使用jef verschueren's的顺应理论，特别是三个世界(物理世界、心理世界以及社交世界)的理论来解释为什么要使用这些主要的评价资源。该论文的意义在于通过对十个民事法庭审判语篇的研究来给从语言学的角度研究法庭审判提供一定的思考，扩大评价理论应用的范围以及给法律界的学者们一些启发。

In 1952 the first Kalinga Prize was awarded to him by UNESCO for his efforts to explain aspects of modern physics to the layman.

学院担任了两年义务讲座后，1928年被聘为新建立的巴黎大学享利·彭加勒学院理论物理教授，他担任这一职务从事教学工作一直到1962年退休。1945年以后，他还担任法国原子能委员会顾问。1930年到1950年间，德布罗意的研究工作主要是波动力学的推广，他的研究取得了许多成果，发表了大量评论和论文。1951年以后的一段时间，德布罗意研究粒子和波之间的关系，目的是通过研究用经典的空间和时间概念对波动力学作出因果解释。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。