查询词典 active

In the field, the popular methods include: using Kalman filter or Particle filter to estimate motion, estimate the optical flow, utilizing the active contour model, the active shape model and the deformable template to tracking the objects, and using the Geodesic active contour model or Geodesic active region model which based the partial difference equation method and level set frame.

在该领域常用的方法有利用Kalman滤波及粒子滤波进行运动预测，通过计算光流评价目标运动，利用活动轮廓模型，活动形状模型，可变形模板等主动形状模型方法以及测地线活动轮廓模型，测地线活动区域模型等基于偏微分方程的方法来跟踪目标运动。

And the mechanism of ATRP is discussed from the view of complex-catalytic reaction. It is deduced that the active center in ATRP is not pure radical but complex active center, which maybe a complex with radical and complex ion. The structure of active center may have a "bridge"structure formed through propaganating radical and transition metal ion, and the active center exists in a"cage"generated by ligand-transition metal ion-organic halide and monomer or solvent.

论文运用基团贡献理论对一些实验现象和结果进行了讨论和分析，并结合研究结果对络合催化引发原子转移自由基聚合反应的机理进行了初步的探讨，认为：过渡金属化合物与有机配体参与的络合催化引发原子转移自由基聚合反应中，聚合反应的活性中心不是纯粹的自由基活性中心，而是与过渡金属相结合的、有着某种"笼"结构存在的复合式活性中心，同时该活性中心以自由基特性为主，同时兼具某种程度的其它活性中心特征（如阳离子和络合聚合活性中心）。

The research mainly reveals, the mixing principle to yield the synergistic effect of different polysaccharides mixed according to Chinese traditional medicine's rules; The principle of polysaccharides from different resources but with the similar main-chain and the same medicine active characters yielding synergistic effect; The principle of polysaccharides from different resources and different structure but with the same medicine active characters yielding synergetic effect; The principle of polysaccharides from the same resource and with the semblable main-chain structure and the same pharmacological active characters yielding synergetic effect; The principle of polysaccharides of different pharmacological active characters and with its ingredients synergic improving pharmacological effect.

根据中药复方的组方进行多糖复合；以不同来源、相似的主链糖单元、相同的药理活性多糖进行多糖复合；以不同来源、不同结构、药理活性相同多糖产生协同效应来进行多糖复合；以相同来源、相似主链结构以及相同药理活性多糖产生协同效应来获取复合多糖；以具有不同的药理活性多糖进行配伍，各有效成分的作用相互协同互补，扩大药理作用范围来获取复合多糖的配伍原则具有一定的可行性。

The anti-microbial activity of active materials against valsa mail,fusarium oxysporum,coniothyrium diplodieua and aspergillus nidulans were measured in vitro.the results showed that active materials extracted using acetone,aether and petroleum ether presented fungistasis to different extent on the four pathogenic fungi and had the best effect to coniothyrium diplodieua.active material extracted using ethanol presented certain anti-microbial effect to fusarium oxysporum.the results also showed there were anti-microbial active material in the leaves of cichorium intybus and founded a base on the research and application.

然后以提取液为供试药剂，对苹果腐烂病菌、棉花枯萎病菌、葡萄白腐病菌、构巢曲霉病菌4种植物病原真菌进行离体活性测定。结果表明：丙酮、乙醚、石油醚的提取液对4种病菌均有不同程度的抑制作用，其中对葡萄白腐病菌抑制效果最好；乙醇的提取液对枯萎病菌具有一定的抑制作用。表明菊苣叶中存在抑菌活性成分，补充了菊苣抑菌活性的研究内容，为该种植物抑菌活性成分的研究和应用奠定基础。

In the reasonable drug molecular design,analyzing the conformations of the substrate without three-dimension structure and confirming its active conformation are very important to illustrate the spatial shape and active site of target enzyme. The active conformation of protoporphyrinogen IX substrate of protoporphyrinogen oxidase has been established using the Distance Comparisons DISCO method. In this paper, four different conformational molecules of Protogen IX and crystal molecule of diphenylethersAF are analyzed by comparing their geometry parameters. The results show the lower energy active conformation from the DISCO model is more reasonable.

在合理药物设计方法中，当靶标酶的三维结构未知时，对其底物进行构象分析，特别是确定其活性构象，对阐明靶标酶活性中心的空间形状和作用位点具有十分重要的意义我们曾利用距离比较法确定了原卟啉原氧化酶的底物—原卟啉原IX的活性构象，本文从构象分析的角度对4种不同构象的原卟啉原IX分子与二苯醚类分子的晶体学构象进行了几何参数的比较和分析，结果进一步证实了距离比较法所确定的活性构象更为可靠

Thirdly, aiming at accomplishing the functions of the education system, the thesis explains the influence and detailed methods of accomplishing the system, expounds in details the designing technology of Dynamic Home Pages and the operating ways of active interacting Web. In addition, it also describes the designing idea and method of using Web Pages maker software and active interacting technology of the Browser terminal to design active interacting Web Pages and question answering system of real-time interacting, andusing the active interacting technology of the server terminal——ASP to design the systemof students identification, and homework hang in, grade inquiring and so on. At last, the distance education system fo Enginereing Graphics in B/S mode is accomplished.

从实现系统的功能出发，本文阐述了多媒体技术对网络教学的影响及其具体实现方法，详细论述了动态网页及动态交互式WEB的运作方式的设计技术，并提出了利用网页制作软件和浏览器端动态网页技术，设计动态互动式教学网页，实时交互式答疑系统，利用服务器端动态交互技术ASP，提出了基于WEB的学生身份验证、作业上交及成绩查询等系统的设计思想和方法，最终实现了基于Internet的工程图学远程教学系统。

The result shows, grass of Sikkim small hole is temporary decline Yan period with permanent decline water content of Yan period soil is respectively 7.06% be in temporary decline with 6.20%; the Sikkim of Yan period is small after water of Kong Cao answer bibulous and rapid, decline Yan condition is eliminated gradually, appearance of aftertreatment group of answer water 6 H and contrast active of basic consistent;SOD is during threatening processing with markedder than notting have to taking a picture change, the ascendant;CAT that there is certain range after answer water and POD active are in threatening during after rising first, drop, all remarkable prep above contrasts level, and the active;MDA content that still keeps taller after answer water as the extension of time of arid and threatening processing mushroom, to threatening the 8th climate reachs maximum, content of the MDA in the lamina after answer water drops quickly, arrive the 5th day after answer water, content of the MDA in threatening group lamina is adjacent already contrast level.

结果显示，锡金微孔草暂时萎焉期和永久萎焉期土壤含水量分别为7.06%和6.20%；处于暂时萎焉期的锡金微孔草复水后吸水迅速，萎焉状态逐渐消除，复水6 h后处理组外貌和对照基本一致；SOD活性在胁迫处理期间和对照相比无显著变化，复水后有一定幅度的上升；CAT和POD活性在胁迫期间先上升后下降，均显著高于对照水平，且复水后仍然保持较高的活性；MDA含量随着干旱胁迫处理时间的延长而迅速增加，到胁迫第8天时达到最大值，复水后叶片中MDA含量迅速下降，到复水后第5天，胁迫组叶片中MDA含量已接近对照水平。

Active oxygen is found to be involved in apoptotic progress affected by exogenous SOD and measurement of SOD in cell sap. Arsenic compounds cause a decrease of SOD in cell. It is exactly the decrease that make plenty of active oxygen gather in mitochondria, and starts the apoptotic progress. The analysis of SOD values shows that active oxygen has an effect on apoptosis.

通过加入外源性SOD和对胞液SOD的测量，发现胂化物引起细胞凋亡的过程，有活性氧的参与，并且胂化物还导致细胞内SOD值的减少，正是由于这种降低，才导致了细胞内特别是线粒体中活性氧大量聚集，启动了细胞凋亡过程，通过对SOD值的分析，证明了活性氧在细胞凋亡中的作用。

The interactions among the three active sites---N3, 04 and 05 in the most stable conformer of glycine and the three mono-value cations--~ Li~ and Na~ are investigated at the R0B3P86/6-3 1 G* level. Their relative binding strength and the binding order are compared and analyzed when the same active site reacts with three different cations or the same cation reacts with three different active sites, respectively.

利用限制性的DFT方法和6-31G基组函数，考察了甘氨酸的最稳定构象中的三个活性位：N3、O4和O5与单价阳离子H~+、Li~+和Na~+相互作用的情况，比较分析了三活性位与同一阳离子相互作用时的相对强弱和同一活性位与三个不同阳离子作用时的成键顺序。

In our research on study chemical reaction of active methylene compounds and brom-acetophenone. Because of brom-acetophenone is compound that contain carbonyl and halogen ,which will take place electrophilic substitution and nucleophilic addition. When active methylene compounds are ethyl acetoacetate and β-diketone, controlling reaction condition, we have found that mono-substitution's production and di-substitution's. production is isolated; active methylene compounds are acetoacetanilide and acetoacetanilide derivate, pyrrolidin-2-one derivants were obtained by substitution and close-ring reaction .but there is no report about it.

本文是让活泼亚甲基类化合物与溴代苯乙酮发生化学反应，由于溴代苯乙酮是含有羰基的卤代烃结构，它可以发生亲电取代和亲核加成反应，当活泼亚甲基类化合物为乙酰乙酸乙酯和β-二酮时，控制反应条件可以发生单取代和双取代两种产物；当活泼亚甲基类化合物为乙酰乙酰芳胺类化合物来反应时，溴代苯乙酮中的羰基与氨基会发生分子内的关环反应生成吡咯烷-2-酮衍生物，这在以前的研究中是没有发现的。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。