应用化学

In the paper,the essential oil of Syringa oblate Lindl var affinis Lingelsh bud from Qinghai was extracted by the method of water vapor distillation. After detected by GC-MS,47 peaks were separated from the oil. Among them,26 compounds taken up 88.7% of total peak areas were identified.

采用水蒸气蒸馏法提取了产自青海的白丁香花蕾的挥发油，应用GC/MS方法对其化学成分进行了分析，分离出47个色谱峰，鉴定了26个化合物，占总峰面积的88.7%，主要成分是丁香酚、丁香醇、石竹烯、苯乙醇等化合物。

Scanning electron microscopy was used to investigate the palpi and tarsi of Coccinella septempunctata to identify the principal chemosensory organs likely to be responsible for pesticide residue detection.

应用扫描电镜观察七星瓢虫Coccinella septempunctata的唇须和附节，以便确认在感应农药残留时起主要作用的化学感受器。

As we all know, thermochemistry is the direct application of thermodynamic in the field of chemistry.

近年来，纳米结构材料引起人们极大的兴趣，对这些由有限个原子构成的小颗粒，再由这些小颗粒凝聚而成的纳米结构材料在热化学方面有什么新的特点，它与颗粒尺寸的关系和粗晶、多晶材料所遵循的规律是否一致，已成功描述粗晶和多晶热力学行为的经典热力学理论对纳米材料是否还适用，这些问题是纳米材料的深入研究和推广应用所必须解决的关键问题。

Author had started the research on design and synthesis of heterocycles several years ago, mainly focused on the design and synthesis of imidazole, thiazole, tetrazole derivatives and their glucosides, in which most of them may have some particular bioactivities.

本论文主要是围绕具有生理活性含氮杂环化合物的设计与合成而展开的，在论文工作中我们应用液相"一锅法"和固相组合化学方法进行了咪唑环、噻唑环、四氮唑环等具有生理活性的杂环化合物及其糖苷的合成。

Methods The expression of TM in 40 cases of gastric carcinoma was detected by means of immunohistochemical ABC.

应用免疫组织化学ABC法对40例手术切除胃癌标本进行TM表达的研究。

Topological indexes of A , B , C and D were all obtained from the different combination of topological vertex degree. A QSAR equation for this series of compounds was established based on the multi-linear regression method and a new group of autocorrelation topological indexes. The results showed that the biological activity is linearly correlated with the volume and branching size of the quinclorac derivatives. Finally, new herbicide was designed based on all QSAR results.

针对应用经典结构参数和量子化学参数得出的结果不够理想的问题，对点价自相关拓扑指数进行了研究，建立了一组新型的点价自相关拓扑指数A、B、C、D；首次将该指数用于除草剂氯喹酸酯类化合物的定量构效关系研究中，建立了很好的定量构效关系方程，综合分析所有的QSAR结果设计出了潜在的新型除草剂氯喹酸烯丙酯。

It is an important topological index in Chemistry since Harold Wiener defined it in his paper in 1947 and it is used for the structure of molecule.

自从Harold Wiener在1947年首次提出这一指标概念后，作为一个重要的拓扑指数应用于化学研究中，用来研究分子的结构。

The research object of material chemistry is the transformation rules and applications of the constitution, processing, structure, and performance of the substance.

材料化学的研究对象是物质的组成、制备、结构与性能的变化规律及其应用。

Using the density functional theory,the reaction of chlorine trifluoride with water of different proportion was studied.

应用量子化学密度泛函理论，对ClF3和H2O在不同比例下的反应进行了研究。

In the forth chapter, three three-way data resolution methods (Tucker 3, Parallel factor analysis and alternative trilinear decomposition ) are applied in the analysis of overlapped peaks of three kinds of amino acid in fluorescence.

结果表明，三种算法都能有效地解决荧光光谱严重重叠的几种物质的同时定性和定量分析，化学计量学三维数据分辨方法可应用来解决常规方法所不能解决的问题，具有一定的理论和现实意义。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新