化学

Mainly engaged in fine chemicals, chemical reagents precious metals, silver nitrate, the acid chloride, potassium cyanide-gold, Sulfite the salt, molecular Silver, silver, industrial ethanol, chemical reagents sulfuric acid, hydrochloric acid, nitric acid, ethanol and 95 percent ethanol and chemical reagents and other electronic products research and production.

主要从事精细化工，贵金属化学试剂，硝酸银，氯金酸，氰化亚金钾，亚硫酸金盐，分子银浆，银粉，工业无水乙醇，化学试剂硫酸，盐酸，硝酸，无水乙醇，95%乙醇等电子和化学试剂产品研究与生产。

In order to know of the chemical characteristics on the surface of the mineral dust in snow and ice, and find out whether the atmospheric physical and chemical processes of mineral dust can impact the ice core records, X-ray Photoelectron Spectrometer was first applied into the study on the surface chemistry of mineral dust sampled from snow and ice.

为了能够了解冰雪中矿物质粉尘的表面化学特征，揭示粉尘大气物理和化学过程对冰芯记录的影响的证据，我们首次把应用于冰雪中矿物质粉尘的表面化学研究中来。

The clinical application of technetium in nuclear medicine will parallel with the development of technetium chemistry in organic-analytical-medical- and biochemistry, and it is likely that useful new Tc-99m radiopharmaceuticals will rapidly make world-wide progress in the future years.

未来鎝-99m在核子医学临床上的应用将并行於鎝化学在有机化学、分析化学、医学化学及生物化学的发展。同时，新的、有实用性的鎝-99放射药物将在世界各地继续研究发展。

From view of wood construction effecting, the article analyzes affecting factors of wood main micro-constructions such as tylosis and bored pits in processing of wood chemistry soaking with fire retardants, the article also analyzes existing condition of moisture in wood and relationship between moisture moving in wood and wood chemistry soaking technology treated with fire retardants.

从木材构造对化学阻燃浸渍处理工艺影响的角度，指出在木材化学阻燃浸渍处理过程中，影响阻燃剂在木材中渗透性的木材主要微观构造有浸提物、纹孔等，分析了木材中水分的存在状态和木材中水分的移动与木材化学阻燃浸渍处理工艺的关系。

Analysis showed that the field injection technique of thermochemical system is feasible, the heat-generating rate and the position of "thermal spike" can be controlled and the thermochemical system is unharmful to the formation.

分析认为现场热化学体系注入工艺可行、放热反应速度与"热峰"位置可控、对地层无伤害，热化学生热提温促进稠油就地水热裂解降粘具有可行性，具体应用时应深入分析热化学就地生热提温的影响因素并优化相关操作参数。

But in case teacher adopts effective measurements to break through them, the process will train students" unintelligence features, explore students" intelligence, help students to digest a lot of learning ability, develop students chemical thoughts.

但是如果在难点处采取有效的突破措施，又将起到培养学生非智力因素和创新能力、开发学生智力、内化学生各种能力、发展学生化学思想的作用，从而成为培养学生化学素养的良好载体。

The acetated and hydrogenated urushiol dimer has been separated,and studied by hetero-J resolved 2D-NMR,homo- and heteronuclearchemical shift correlation 2D-NMR and long-range coupled chemicalshift correlation 2D-NMR.The results show that the urushiol dimerare most diphenyl and alkyl phenyl ether structures.Furthermore,IR and MS data also has conformed this structures.

本文将酶催化预聚后的生漆，催化加氢后，乙酰酯化，再进行离心旋转薄层层析，分离得到二聚体主要组分，用异核J分辨谱，同核化学位移相关，异核化学位移相关，远程偶合异核化学位移相关等2D—NMR技术，全面研究了其结构，得到了联苯型和烷基芳醚型聚合结构的结论。

Amino-2-methylpropanol was utilized as a chemical modifying reagent to modify carboxyl groups in unsaturated fatty acids into nitrogen-containing heterocycles, which effectively suppressed the migration of double bonds of the alkenyl within the electron impact source and led to regular informative mass spectra indicative of the position of the olefinic bonds in the chain.

以2-氨基－2-甲基丙醇为脂肪酸的化学修饰试剂，将不饱和脂肪酸羧基化学修饰试剂，将不饱合脂肪酸羧基化学修饰成含氮杂环，从而避免了链烯基中碳碳双键在EI源中的移动，并使质谱呈现显示双键位置的规范信息。

This article analyses some basic conceptions that are comparatively vayue or even wrong wrong in the teaching of middle school chemistry, like the definition of chemical change, the influence of concentration on a chemical reaction , the structure of oxacid,and the acidity of sulfuric acid, the acidity of carbonic acid, and the conversion of allotropic substance.

分析了中学化学教学中的几个比较模糊甚至错误的基本概念，如化学变化、浓度对化学反应速度的影响、含氧酸的结构、硫酸的酸性、碳酸的酸性、热化学方程式的表示法、同素异形体间的转化等，并从大学化学角度加以澄清，以便使大一学生更准确地理解和掌握这些基本概念。

Schiff base matel complexes are of great importance in the field of catalytical study, bioinorganic chemiestry, coordination chem...

金属Schiff base（手性Schiff base一般称为Salen）配合物的研究，在催化研究、生物化学、配位化学、超分子化学等领域具有十分重要的意义。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。