晶体学

ABSTRACT A number of protein functions are under exploration based on the determination of their 3D structures.

蛋白质结构分析的经典方法是x射线晶体学和多维核磁共振技术。

The filled skutterudite compound possesses bcc structure as evidenced by electron diffraction analysis. Powder X-ray diffraction data of filled skutterudite samples were characterized by Rietveld method for some crystallographic parameters such as lattice constant, atomic occupation, atomic position, etc.

另外，通过对化合物电子衍射的分析证实了〓化合物是一种具有bcc结构的化合物；运用Rietveld方法对填充skutterudite化合物X衍射谱线进行了分析，对化合物的晶格常数、原子位置的占有率以及原子位置坐标等晶体学参数进行了表征。

However, Crick and Watson might not have been able to discover the DNA double helix as quickly as they had without the work of the x-ray crystallographer X Rosalind Franklin, who died before the Nobel Prize was awarded.

然而，如果没有 X 射线晶体学专家罗莎琳德·富兰克林的工作，克里克和沃森也许不会这么快就发现 DNA 的双螺旋结构。

The second is the study on the influence of dynamical effects in quantitative electron crystallography.

其二是对动力学效应在定量电子晶体学中的影响的研究。

This paper presents systematic derivation and analysis of the law of Hume-Rothery electronic density using crystallography and quantum theory.

本文应用晶体学和量子力学的观点及理论对合金理论中的重要定律——Hume-Rothery电子浓度定律——进行了系统地推导与分析。

At first the first chapter in the Part Two reviews the macromolecular X-ray crystallography and its advantages in all aspects.

论文第二部分第一章首先对生物大分子X-射线晶体学及其各个环节中的主要进展作了简要综述。

Based on the results of the crystallography, the surface relief effects were analyzed by the model of decomposition of the transformation displacement field.

在相变晶体学研究结果的基础上应用相变位移场分解模型对表面浮突的产生进行了分析。

Crystal structural analysis reveals that, because water molecules bond to Cu atoms, the dhbd ligand can only adopt a hydroxyl oxygen atom to bridge two reversed U-shaped subunits into a novel centrosymmetric dual-U-shaped tetranuclear Cu structure. Each U-shaped frame consists of two crystallographically distinct Cu atoms, two dpphen ligands and one coordinated water molecule.

晶体结构分析表明，由于水的配位阻断， 2，3-二羟基丁二酸根仅通过单羟基氧桥联两个U形双核亚单元形成具有一个对称中心的双U形四核结构，其中U型亚单元包含晶体学上不对称的2个Cu原子、1个2，3-二羟基丁二酸根、2个4，7-二苯基-1，10-邻菲咯啉和1个配位H2O分子。

Using the cDNAs from primary spermatocytes and round spermatids, the cDNA subtractive libraries of these cells were constructed by the application of the technology of suppression subtractive hybridization.

我们得到了这个蛋白质的晶体并且对它进行了初步的晶体学分析。人类FcaRI(CD89)分子是黏膜和血清中含量极其丰富的IgA抗体的特异性受体。

In the ferrous martensite transformations, the lath martensite of substructure with high-density dislocations is made up of the transformation basic-units with same orientations whereas the plate-shaped martensite with twin substructure is made up of the basic-units with different orientations.

本文根据铁基合金马氏体和贝氏体显微组织观察以及晶体学位向关系测定，提出板条马氏体、孪晶马氏体和贝氏体铁素体均由相变基元构成，相变基元具有切变形核长大的晶体学特征。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。