化学

On the theoretical basis of the teaching situation and interrelated problems that some educators at home and abroad do research on, and in accordance with the present situation of middle school chemis...

论文就国内外部分教育专家对教学情境及其相关问题的理论研究基础之上，针对当前中学化学教学现状，从化学学科特点出发，结合课堂教学实践，就中学化学教学中情境的创设这一问题做了两方面的工作。

ABSTRACT Inhibition mechanism and the relations between inhibition efficiency and molecular structure of inhibition of carbon steel in chlorhydric acid by benzene nitriles whose inhibition is caused by chemical adsorption and quaternary ammonium salts whose inhibition is caused by physical adsorption are mainly studied from microscope through quantum chemistry calculation, and the relations between inhibition efficiency and molecular structure of inhibition of carbon steel in chlorhydric acid by benzene nitriles are studied by making use of model-constructing thought of grey theory in this paper.

本文主要通过量子化学计算，从微观角度研究了化学吸附型缓蚀剂苯腈类化合物和物理吸附型缓蚀剂季铵盐在盐酸溶液中对碳钢缓蚀的缓蚀机理和缓蚀性能与分子结构的关系；并运用灰色理论建模思想，研究了苯腈类化合物在盐酸溶液中对碳钢缓蚀的缓蚀性能与分子结构的关系。其中，通过量子化学计算，从微观角度研究物理吸附型缓蚀剂在盐酸溶液中对碳钢缓蚀的缓蚀机理和缓蚀性能与分子结构的关系，是在尝试着进行；而运用灰色理论建模思想，研究缓蚀剂缓蚀性能与分子结构的关系，是一项具有尝试性和开拓性的工作。

The chemistry behavior research of wollastonite indicated that the silicon-potassium fertilizer has a chemical active in organic acid.The factors affecting manurial effect of silicon-potassium fertilizer are not only soil pH and desilicification,but also content and type of organ in the soil.Wollastonite chemistry behavior indicates that silicic acid can be dissolved out from silicon-potassium fertilizer in chlorhydric acid solution if pH of solution is not smaller than 2. The drop of apparent density,increase of DBP sorptive rate and specific surface for leavings indicate that hydrated silicon oxide is polyporous,and those mineralogic feature presignify that silicon-potassium fertilizer has a role of conservation of both Moisture and Fertility and improving soil structure.After active ingredient releasing,silicon-potassium fertilizer leaves half the substance (non-active ingredient)in soil.

熟料单矿物在酸溶液中的化学行为研究表明，硅钾肥矿物在有机弱酸中的化学活性较好，影响硅钾肥肥效发挥的因素是土壤pH值和土壤的去硅化程度，还有土壤有机质的含量与种类；硅灰石在盐酸溶液中化学行为表明，在反应体系pH不小于2的情况下，硅钾肥矿物大量溶出硅酸根组分；溶解残余物表观密度降低、DBP吸着率和比表面积增加表明水合二氧化硅是以多孔形式存在，为硅钾肥具有保水保肥、改良土壤结构的提供了矿物学依据。

The precision, linearity, anti -interference ability, recovery rate were compared among the 4 methods according to the standard method of NCCLS, and relativity between each of the 4 methods and modified diazotate J - G was calculated. Results

结果改良化学氧化法、钒酸氧化法、胆红素氧化酶法的批内精密度均小于3.0％；4种方法的回收率均在95.0％～105.0％之间；KHC3法、改良化学氧化法、钒酸氧化法和胆红素氧化酶法的线性范围分别是：0～424μmol／L、0-675μmol／L、0-629μmol／L、0-575μmol／L；胆红素氧化酶法和改良化学氧化法均有较强的抗干扰能力，和改良J-G法的测定结果有高度一致性。

Combinatorial chemistry is a type of synthetic strategy which systematically connects a set of"building blocks"such as amino acids, nucleotide and small organic molecules to yield a large array of diverse molecular entities described as a combinatorial library. It also refers to the process of screening the compounds with the expective activity from the library.

组合化学是将诸如氨基酸、核苷酸、有机小分子等构建单元按某种组合方式连接起来，合成出包含大量化合物的化学库，并从中筛选出具有某种物理、化学或药理活性化合物的一套合成策略和筛选方案。

Fluorenyl methoxy carbonylsolid-phase synthesis of Fusukang was studied firstly,including stepwise solid-phase peptide synthesis and solid-phase convergent synthesis.

研究了36肽扶素康的9-芴甲氧羰基法固相化学合成，包括Fmoc固相逐步化学合成和Fmoc固相片断缩合化学合成。

The juvenile hormones structure, synthesis site and physiological functions of Haemaphysalis longicornis were investigated using tissue culture, biochemistry, RCA, LSS, GC and GC/MS.

运用组织培养、生物化学、放射化学分析、液闪和气相色谱/质谱技术对长角血蜱保幼激素化学结构、合成位点和生理功能进行了研究。

The ordernance of15 species of main halophytic plant was make out according the contant of chemical elements,and the corresponding types of halophytic community was classified,the featues of its chemical element was analised.

据15种占优势的盐生植物元素化学成分含量高低顺序，按元素化学成分，对它们进行排序，划分了盐生植物群落类型和该区盐生植被的元素化学特征。

According to hydrochemistry monitoring material of northwest rivers in recent five years,and compared with the first northwest rivers water resources investigation appraisal result in 80's of last century,we analyzed the main rivers hydrochemistry condition,runoff degree of minerali...

根据近5 a来对西北诸河的水化学监测资料，统计出了主要河流水化学状况；分析了河川径流矿化度、总硬度和水化学类型的地区分布，并与20世纪80年代第一次西北诸河水资源调查评价的结果进行了比较。

According to hydrochemistry monitoring material of northwest rivers in recent five years, and compared with the first northwest rivers water resources investigation appraisal result in 80's of last century, we analyzed the main rivers hydrochemistry condition, runoff degree of mineralization, total hardness and the hydrochemistry type distribution.

根据近5a来对西北诸河的水化学监测资料，统计出了主要河流水化学状况；分析了河川径流矿化度、总硬度和水化学类型的地区分布，并与20世纪80年代第一次西北诸河水资源调查评价的结果进行了比较。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。