查询词典 X-ray diffraction

Five of their single crystals were obtained and their structures were determined by X-ray diffraction. By comparison, it was found that dithiocabamate complexes often formed an exactly planar MS4 unit, such as [Mo(R2dtc)2]; and also formed a special MS 5 unit, such as [Cu2(R2dtc)4], the copper atom lies in a distorted square-pyramidal environment.Four kinds of heteropoly acids were prepared and characterized; a series of solid superacid catalyst of supported heteropoly acid were prepared and characterized; regioselectivites of chlorobenzene mononitration with nitric acid with different heteropoly acid on different supports and reaction conditions have been investigated.

培养并解析了5个该类配合物的单晶结构，通过比较，发现二硫代氨基甲酸盐与过渡金属容易形成四配位结构，金属原子与4个硫原子共平面，比如二乙基二硫代氨基甲酸钼；也能形成比较特殊的五配位结构，比如二乙基二硫代氨基甲酸双核铜，Cu原子与5个S原子相连，处于一个变形的四方锥结构的配位环境。

By means of X-ray diffraction,scanning electron microscope research and analysis of the chemical composition of micro zone,the authors investigated the zeolite ores of zeolite deposits in Huzhen Basin and determined the main mineral composition of zeolite ores,which are made up of clinoptilolite and mordenite .

运用X射线衍射、扫描电镜形貌研究及微区化学成分分析等手段，对浙江省缙云县壶镇盆地及其外围沸石矿床沸石进行系统研究，确定其矿物组成主要为斜发沸石和丝光沸石，二者可单独产出，也可形成混合型矿石。

The influence of Zr/Ti on the mechanical and electrical properties ,phase composition,lattice constant of lead niobium stibium zirconate titanatePb(Nb1/2Sb1/2TiO3-PbTiO3-PbZrO3 (Nb1/2Sb1/2=0.02mol piezoelectric ceramics ,in which there are tetragonal and rhombohedral phases coexistent (morphotropic phase boundary,MPB),was studied by conventional containing lead piezoelectric ceramic processing and X-ray diffraction.

借助X-射线衍射仪，采用传统含铅压电陶瓷制备工艺研究了Zr/Ti对准同型相界附近铌锑锆钛酸铅（Pb(Nb1/2Sb1/2)TiO3-PbTiO3-PbZrO3）(Nb1/2Sb1/2=0.02mol压电陶瓷机电性能、相组成和晶格常数的影响。

To obtain large single crystal of ΔnifE Av1 suitable for X-ray diffraction, a body of studies were performed on the crystallization conditions such as kinds and concentrations of precipitants, pH value of buffer, diffusion method and protein batch.

为获得可供X-射线衍射的ΔnifE Av1的大单晶，对组成蛋白质沉淀剂的各种化合物的种类和浓度、缓冲液的pH值、结晶方法及蛋白样品的批次、浓度等结晶条件进行了大量优化研究。

To obtain large single crystal of △nifE Avl suitable for X-ray diffraction, a body of studies were performed on the crystallization conditions such as kinds and concentrations of precipitants, pH value of buffer, diffusion method and protein batch.

为获得可供X-射线衍射的△nifE Avl的大单晶，对组成蛋白质沉淀剂的各种化合物的种类和浓度、缓冲液的pH值、结晶方法及蛋白样品的批次、浓度等结晶条件进行了大量优化研究。

The nitrogenation process, reaction details under different nitrogenation conditions and the magnetic properties of products are also studied by using the differential thermal analysis, X-ray diffraction spectra, M〓ssbauer effect and vibrating sample magnetometer.

用DTA、X-射线结构分析、穆斯堡尔谱分析等手段研究了不同氮化条件下的氮化规律和反应细节。

Single-crystal X-ray diffraction analysis of 3, 3'-BTDA and 3, 4'-BTDA showed that they both have bent and noncoplanar structures.

发现螺双内酯在乙酸酐中回流可以直接有效地转化成二酐3，3'-BTDA，并提出了转化机制。

The grafting of polycaprolcatone on starch by ring-opening polymerization of e -caprolactone was initiated from the starch hydroxyl functions in the presence of a catalyst such as stannous octoate Sn(0ct2, Dibutyltin dilaurate or titanium tetrabutoxide. The grafting ration could reach 16%. IR, X-ray diffraction and DSC were used to investigate the grafting-polymer.

在辛酸亚锡Sn(Oct_2、二月桂酸二丁基锡和钛酸丁酯等催化剂作用下，淀粉羟基引发己内酯单体进行配位聚合，淀粉接枝率可以达到16％，并通过红外光谱、X—ray衍射及DSC等测试手段对反应产物进行了表征。

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。

The montorillonite is treated with these agents, which results in marked increase in their organophilic properties. The orgnic-montmorillonite has been identified by X-ray diffraction, different thermal analysis and infrared adsorption spectra. Polyethylene/montmorillonite composites are pre- pared by melt intercalation. The compatibility of PE and MMT is improved with different compatibilizers. As a compatibilizer, maleated polyethylene is better and has been proved by XRD and mechanics performance.

同时用X射线衍射衍射实验、红外光谱实验、差热分析试验、力学性能测试等手段，研究了采用不同的相容剂改善聚乙烯与蒙脱土之间的相容性的情况；相容剂的用量对聚乙烯/蒙脱土复合材料层间距、性能的影响；蒙脱土的含量对PE/MMT对复合体系的层间距影响；以及工艺条件对复合体系的层间距和性能的影响。

Tom: You are right, he worked hard all the time.

你是对的。他一直都是努力工作。

Take shortcomings,failures,and mockings of others as commonplace and a drive to complete oneself,hold your own opinion over the evalution and disscution divested from others,afterwards sink into the state of eliminate mistakes if any or encourge oneself being not being influenced by the sayinngs of others or having no ideas to do.

把缺点、失败及别人的耻笑等看成是一种常事，当成完善自己的动力，对别人的评价和议论自己心中有主见，做到&有则改之，无则加勉&，不为人言所左右或无所适从。