查询词典 aggregation

For Nitzschia sp., the aggregation phenomenon was not obvious after treating with KMnO4 and ozone.

在矽藻方面，经过高锰酸钾和臭氧氧化后，矽藻凝聚现象的变化皆不甚明显。

Objective: To study the effects of aqueous extract of ocimum basilicum on platelet aggregation.

目的：探讨罗勒水提取物对二磷酸腺苷、凝血酶诱导的大鼠血小板聚集的影响。

ocimum basilicum possesses an inhibitory effect on platelet aggregation induced by ADP and thrombase.

罗勒水提取物对ADP、凝水酶诱导的大鼠血小板聚集具有抑制作用。

Association rule is an important content in data mining, efficient arithmetic is the most important part of data-mining 昺odel, especially when facing the complicated and various demands, it is necessary to propose characteristic and complementary arithmetic according to different factors. The paper analyses elaborately the idea of association rule mining arithmetic based on constraints, studies the classes of constraints in order to confirm its utility. The arithmetic aiming at united variable constraints improvement strategy and exchange of complication aggregation constraints has been designed, the practice has proved that it is effective.

关联规则是数据挖掘研究的重要内容，高效的算法是数据挖掘的重要组成部分，而且面对复杂的多方面的需求，应提供针对各种因素的各具特色的互补的多种算法，本文详尽地研究了基于约束的关联规则挖掘算法的思想，深入地研究了约束的分类、确定其可利用的性质，在此基础上提出了针对联合约束中前驱和后继重叠时的改进策略和复杂聚集约束的转换方法。

Scanning electron microscopy,transmission electron microscopy,circular dichroism and small-angle X-ray diffraction were used to analyze the aggregation mode of CSG in the organogel phase.A hierarchical self-assembly model was proposed to explain the transition from molecular to primary and secondary structure.It is shown from our results that CSG can aggregate into a micellar fibril nanostructure with high length-to-width ratio which is bundled and entangled to form a three-dimensional(3D) network that immobilize the fluid component probably by surface tension.Moreover,sol-gel polymerization of tetraethoxysilane was carried out using CSG in the gel phase.

通过扫描电镜(ScanningElectron Microscopy，SEM)、透射电镜(Transmission Electron Microscopy，TEM)、圆二色谱(Circular Dichroism，CD)和小角X—射线衍射仪(Small-angle X-rayDiffraction，SAXRD)考察CSG分子自组装行为结果表明，CSG形成的聚集体具有多级结构：首先CSG通过手性堆叠自组装形成直径在9—10nm的细纳米纤维，这些细的纳米纤维再以不规则的六方堆积的方式进行排列，构成直径在40—100nm的粗纳米纤维(即细纳米纤维的&捆束&)，最后粗纳米纤维互相粘连形成三维网络状结构，使有机溶剂&固定&，从而形成凝胶；以CSG有机凝胶为模板，四乙氧基硅烷为前体，通过溶胶—凝胶聚合的方法制备了直径大约为100nm的二氧化硅纳米管。3。

And we have demonstrated through differential scanning calorimetry, thermogravimetry,XPS and SEM analysis that the formation of highly reflective and conductive silver layers on polyimide film is a result of the silver-catalyzed and oxygen-assisted decomposition of the polymer overlayer and the self-accelerated aggregation of silver clusters on the film surface.

并通过差示扫描量热、热失重、XPS和SEM分析证明了聚酰亚胺表面高反射高导电银层的形成是在银催化下、氧气辅助的表层聚合物降解和表层银颗粒自加速聚集共同作用的结果。

Methods: The ZJ8112 strain was subjected to phenotypical study, salt-aggregation test and 16S rDNA sequence analysis; the sequence analysis result was searched in the GenBank to determine its characteristics.

采用传统的分类学方法观察菌株ZJ8112的形态、耐盐度，结合16S rDNA序列分析在GenBank上进行比对以确立其进化地位。

The isolated strains were subjected to phenotypical study,salt-aggregation test and rDNA ITS sequencing.

对获取的活性菌株进行形态特征研究、盐需求测试、核糖体rDNA ITS区序列分析，并将所测得序列在NCBI数据库中进行相似性搜索，选取其中相似性较高的序列以邻接法构建系统进化树，将该菌株分类鉴定到种。

Several aminated Fullerene derivatives were synthesized by the reaction of C〓 with phenylamine, diphenylamine and triethylamine etc., the phenomena of fragmentation and aggregation of the aminated Fullerene derivatives in UV laser desorption ionization mass spectrometer was observed, a few nitrogenous poly-Fullerene ions, such as C〓NH, C〓N〓H〓, C〓N〓H〓, C〓N〓H〓, C〓N〓H〓 etc.

对C〓富勒烯与苯胺、二苯胺、三乙胺等形成的加合物在紫外激光解吸电离作用下可以发生不同寻常的裂解和聚合现象进行了研究，认为其形成机理为：上述加合物在紫外激光解吸电离作用下，发生裂解产生C〓NH、C〓N及C〓等离子，然后它们之间发生聚合，形成如：C〓NH、C〓N〓H〓、C〓N〓H〓、C〓N〓H〓、C〓N〓H〓等含氮原子的聚富勒烯离子。

Titanium dioxide has been extensively used as photocatalyst in nowadays. But aggregation between nanoparticles results in a lower photoactivity.

目前奈米二氧化钛光触媒应用已相当广泛，但奈米粉体之间因为容易发生团聚的现象，而降低奈米二氧化钛的效能。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。