好研究的

Based on investigating the short and intermittent structural plane, surrounding rockmass of the huge underground powerhouse in Three Gorge has been divided into five statistical similar areas according to its characteristic of rockmass structure by applying structure plane network simulation. Distributed characteristic of structural plane has been studied and based on it mechanics macrocharacteristic has been studied:(1) It is the first time that based on the result of structural plane network simulation rockmass quality of every structure area has been studied with applying blurred information optimum seeking technique and be compared with and RQD method. The result indicated that it has better effect to evaluate rock quality with blurred information optimum seeking technique.(2) It is the first time that the interrelated relationship of the result of in-suit rockmass deformation test and fractal characteristic of structure on test point has been applied to determine rockmass deformation parameter. The question of evaluating deformation parameters of engineering rockmass has been solved.(3) Anisotropy strength parameters have been determined by applying shear zones simulating method. The result indicated that there are different strength parameters in every structural area, after comparing the result of Fast Lagranian Analysis in continua number simulation method with that of method of weighted mean according to continuity. The result indicated that when a suitable reduction coefficient is been considered rockmass strength parameters can be simply and fast determined with method of weighted mean according to continuity where there is not enough test result.(4) Damage characteristic has been studied based on analysis fractal characteristic of structural plane network by applying fractal-damage coupling method. It is the first time that the concept of damage degree has been set up to evaluate rockmass quality according to the biggest principal damage.

通过对短小、断续性结构面统计特征的研究，将地下厂房区划分为五个岩体结构统计均质区，应用结构面网络模拟技术研究了各个岩体结构均质区结构面的发育分布特征，并以此为基础对岩体宏观力学特性进行了深入研究：(1)首次通过在结构面网络模拟计算结果的基础上，应用模糊信息优化技术研究了厂房区各个岩体结构分区的岩体质量并与岩体基本质量指标研究法、岩体质量指标RQD值研究法作了对比，结果表明以结构面网络模拟结果为基础，应用模糊信息优化技术进行岩体质量评价能够取得很好的效果，解决了工程岩体质量的定量评价问题；(2)首次通过对已有的现场大型岩体变形试验结果的分析及相应试验点岩体结构分形特征的研究，建立了结构面分布的分形维数和岩体变形指标间的相关关系，并首次应用这种相关关系根据结构面网络模拟及分形维数计算结果确定了缺少试验结果的地下厂房各工程部位的岩体变形指标而且应用于围岩稳定性计算，解决了工程岩体宏观变形参数的评价问题；(3)应用在结构面模拟网络图上模拟岩体剪切破坏带的方法，得出了岩体在不同方向上的强度参数，结果表明岩体的强度特性与结构面的发育方向和程度有着明显的关系，各个岩体结构均质区具有不同的强度参数；同时还通过应用拉格朗日差分法对岩体强度指标的数值分析并与按连通率加权平均计算法对比表明，按连通率加权平均计算法在考虑合理的折减系数情况下，可以简单快速地对缺少现场大型试验结果的具体工程部位实现岩体强度指标的估计，通过以上研究解决了工程岩体抗剪强度参数的评价问题；(4)通过结构面网络分形维数的研究，应用分形损伤耦合分析方法，研究了厂房区岩体的损伤特征，并首次引入"损伤度"的概念，建立了应用最大主损伤评价岩体质量的指标体系。

objective to observe the antitumor activities of different solution extracts of plumbago zeylanica l.in vitro.method mtt method was used to detect the inhibitory effects on four kinds of cancer cells.results chloroform extracts had significant inhibitory effects on the breast cancer cell(bre-04),the nerve cancer cell(n-04) and the lung cancer cell(lu-04),ic50 were 0.2699mg/ml and 0.2634mg/ml,0.4961mg/ml respectively.ic50 of chloroform extract on the hepg2 was 0.9379mg/ml.ic50 of petroleum ether extracts on bre-04,n-04,lu-04 and hepg2 was 0.5902mg/ml,0.5725mg/ml,0.7938mg/ml,0.6374mg/ml;ethyl acetate extracts had fairly inhibitory effects on the lu-04,ic50 was 0.7343mg/ml;n-butanol extracts and water-solubility extracts had notsignificant inhibitory effects on the four kinds of cancer cells.conclusion the antineoplastic effective parts of plumbago zeylanica l.were chloroform and petroleum ether extracts.

目的 探讨白花丹体外抗肿瘤作用的活性部位。方法 mtt染色法对白花丹五种溶剂提取物体外抗肿瘤活性进行了初步的研究。结果氯仿提取物对乳腺癌细胞（bre-04）、神经癌细胞（n-04）、肺癌细胞（lu-04）有较好的抑制生长作用，ic50分别为0.269 9 mg/ml、0.263 4 mg/ml、0.496 1 mg/ml，对肝癌细胞hepg2抑制作用差， ic50为0.937 9 mg/ml；白花丹石油醚提取部位对乳腺癌细胞（bre-04）、神经癌细胞（n-04）、肺癌细胞（lu-04）、肝癌细胞hepg2的ic50分别为0.590 2 mg/ml、0.572 5 mg/ml、0.793 8 mg/ml、0.637 4 mg/ml；乙酸乙酯提取物对肺癌细胞（lu-04）有一定的抑制作用，ic50为0.734 3 mg/ml；水溶性提取物以及正丁醇提取物无明显抑制肿瘤作用。结论白花丹氯仿提取部位、石油醚提取部位体外抗肿瘤作用较好，值得对其提取部位进一步分离纯化并研究其抗肿瘤作用机制。

Based on the investigation into the TVS remotion efficiency and the changes of such parameters as OUR, SV an4 during aerobic digestion processes of different aeration manner, initial sludge concentration and digestion temperature, this study determines tho optimized aerobic digestion operational conditions.

污泥好氧消化处理工艺的研究沈耀良摘要通过对污泥好氧消化处理中不同曝气方式、不同初始污泥浓度及不同温度对消化效果的影响及消化过程中污泥的OUR、SV和NH＿4￣＋－H等指标变化规律的考察研究，确定了最优的运行工艺条件。

In chapter 1, an up to now synthetically evaluation is given on the research ways and conclusions about jet in cross-flow. Considering the shortage of previous research ways and techniques (the instantaneous flow field and vortices field can not be properly get), in addition to the deficiency of corresponding conclusion (mainly concentrate on the analysis of time-average but little on structures of flow and action of vortex), the research way and content is draft out in this part. Though PIV, the time-average, instantaneous flow field and vortices field can be get, that will unveil the coherent vortex and its course of generation, development and evolvement, with the assistance of K-ε model and Hybrid Finite Analytic Method , which will proof-test the experiment result and bring some complementary, more profound research about the 3-D characters can be done. Using some fundamental topological theory and principle on flow analysis, with anglicizing of vortex structure, a reasonable description is the topological characteristic of near field in JICF given.

首先在第一章中对横流中湍射流的以往研究方法和研究成果给予了综合的评述，针对横流中湍射流旋涡结构以往研究中研究方法的局限性（不能很好得到流动的瞬态流场及涡量场）和相应研究成果中存在的不足（大都集中在时均特性的分析，对流动的内部结构和旋涡的运动阐述很少），明确了本文的研究方法和研究内容：通过PIV流动测量显示技术得到流动的时均及瞬态流场、涡量场，来揭示横流中湍射流的时均、瞬态流场、涡量分布特性，和各种具有拟序结构性质的复杂涡系的产生、发展及演化过程；结合湍流k-ε双方程模型及相应的HFAM计算方法，对于实验进行相互验证和补充，从而更为充分地研究各种旋涡的三维特性；利用拓扑分析的一些基本原理及相关规则，依据对各种旋涡结构的分析，做出对射流近区流场拓扑性质的合理描述。

The environmental protection specialist of ourcountry began to study treatment technology of straw-pulp black liquid in 1980s, and gainsome accomplishments, for example, alkali recycling technique has been successfullyapplied in big straw-pulp-making factories yearly producing over 30 thousands tons pulp,and obtained good social results and certain economic results.

我国环保工作者在80年代初就开始研究草浆黑液的治理技术和方法，并取得了一定的实效，如碱回收技术已成功地应用于年产3万吨以上的大型草浆厂，取得了较好的社会效益和一定的经济效益，但对于中小型碱法草浆厂尚未研究出一种既有较好社会效益，又有一定经济效益的成熟技术。

Plenty of studies have been made towards unraveling the complex intraovarian control mechanisms that act in concert with systemic signals to solve some clinical problems, improve the outcome of assisted reproductive technology and establish the in vitro maturation system.

许多研究致力于探索卵泡发育的正常生理精确过程，以更好的了解人类配子发育过程及生殖奥秘，更好的解决一些临床疾病；在辅助生育技术(Assistant reproductive technology，ART)中提高临床妊娠率，建立完善的体内外卵子成熟的体系，这是人类生殖研究中一个重要课题。

Morifolium is different in some botanic characters:"Hongxinju" was higher than other cultivars on height of plant, length of lamina, diameter of stem and agricultural character;"Xiaobaiju" is the best on the ramification and the quantity of capitulum on individual plant;"Dabaiju" is the most on the quantity and layer number of ligulate flower;"Changbanju" is me longest on the capitulum diameter and corolla of ligulate flower.2, The plant height, rate of dried material accumulate and chlorophyll content of four medicinal C.

本研究采用比较分析的方法，于2001年和2002年在同一栽培条件下，对江苏省射阳县多年栽培的药用白菊花种内分化的4个主要药用白菊花栽培类型，进行植物学形态、内在质量、苗期耐盐性、产量性状等方面进行了比较系统的研究，结果如下： 1、4个主要药用白菊花栽培类型在植物学性状方面存在一定的差异；红心菊株高最高，茎杆较粗，叶片最大，农艺性状较好；小白菊每株头状花序数最多，小白菊分枝性好；大白菊舌状花层数、数目最多；长瓣菊花序直径最大，舌状花花冠最长。

Nitrosomonas is successfully cultured in two aerobic reactors in this paper. Experimental results show that two-stage SBR is superior to one-stage SBR at the same hydraulic residence time. Stable nitritation is realized because the nitrobacter is sensitive to the changing environment.

在两个SBR好氧反应器中成功培养出大量的亚硝酸菌，研究结果表明：在水力停留时间相同时，两级SBR好氧反应器的脱氮效率优于一级SBR好氧反应器。

Nitrosomonas is successfully cultured in two aerobic reactors in this paper. Experimental results show that two-stage SBR is superior to one-stage SBR at the same hydraulic residence time.

在两个SBR好氧反应器中成功培养出大量的亚硝酸菌，研究结果表明：在水力停留时间相同时，两级SBR好氧反应器的脱氮效率优于一级SBR好氧反应器。

Since its establishment in 1936 as the nation's first wildlife experiment station, the Patuxent Wildlife Research Center has been a leading international research institute for wildlife and applied environmental research, for transmitting research findings to those responsible for managing our nation's natural resources, and for providing technical assistance in implementing research findings so as to improve natural resource management.

Patuxent野生动植物研究中心始建于1936年，是美国第一个野生动物实验站，目前，该中心已成为国际一流的研究机构，主要从事野生动物和应用环境研究，促进研究成果的转让和应用，更好的管理自然资源。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐