化学

Taking light calcium carbonate as an example,in order to make its manufacturers understand the measures——how to enhance the product′s whiteness from theories to practice,this paper fully expatiated on various effecting factors of chemical whitening ,process of chemical whitening ,establishmen.

以轻质碳酸钙为例，为了使生产企业从理论到实践对提高白度的途径有所了解，对化学增白的影响因素、化学增白程序、制定化学增白方案的原则、实验室试验筛选最优方案、工业试验的方法进行了全面阐述，并提出几点行之有效的注意事项，以保证化学增白达到预期效果。

With the focus on the integration of chemical software, chemical structure processing, standardization of chemical software as well as markup and descriptive languages, this paper introduces several innovative and useful features developed by using web to express chemical information, and thus greatly influence the development of chemical software.

文章从化学软件的集成、分子结构的可视化处理、化学软件标准、标记和描述语言等几个方面讨论了Web技术与化学信息资源相结合形成的特点及其对化学软件发展的影响。

In this paper, various synthetic methods of coenzyme Q10 appeared in about half a century were reviewed with emphasis on the semi-chemosynthetic methods using natural solanesol extracted from tobacco as starting material. The key factors and development direction of coenzyme Q10 chemosynthesis were illustrated in this paper as well.

笔者根据半个世纪以来有关辅酶Q10化学合成的各种文献报道，对辅酶Q10现有的各种化学合成路线及其工艺优劣进行了介绍和比较，重点介绍了从烟草中提取天然茄尼醇为原料的半化学合成辅酶Q10方法，并阐明了化学合成辅酶Q10的关键因素和发展方向。

The method has been successfully applied to the determination of codeine in codeine tablets and the results are in good agreement with those obtained by pharmacopoeia method.

我们将这一化学发光现象称为后化学发光现象，称相应的化学发光反应为后化学发光反应[8，9]。

Work in this paper focuses on the data mining from chromatographic retention index data. A retention index database that contains about 50000 records of retention index is firstly established. Projection pursuit technique is then utilized to do data mining upon the data in order to find out some valuable information about the relationship between the retention indices and structural descriptors. A novel algorithm for projection pursuit is developed in this work. Samples of alkane, alkene and cycloalkane are investigated.

中文题名化学数据挖掘新算法和定量构性关系基础研究副题名外文题名 New methodology in chemical data mining and foundational research on QSPR 论文作者杜一平导师梁逸曾学科专业分析化学研究领域\研究方向化学计量学学位级别博士学位授予单位湖南大学学位授予日期2002 论文页码总数115页关键词定量构性关系化学计量学数据挖掘馆藏号BSLW /2003 /O6 /2 化学数据挖掘正逐渐引起化学家们的关注。

The Journal of Histochemistry and Cytochemistry is a official journal of the Histochemical Society.

组织化学和细胞化学杂志》是该学会的官方期刊，它报道组织化学和细胞化学？？？

We would like to make our students to know and master the basic way of the chemistry experiments, the use of the normal apparatus of inorganic and analytical chemistry, the character of the normal inorganic compounds and

课程的目标是使学生了解和掌握化学实验的基本方法和常见的无机与分析化学仪器的使用，了解和掌握一般无机化合物的性质以及分离提纯的方法；熟悉常见的无机化合物的制备方法，掌握测定有关重要化学常数的方法和原理；熟悉滴定分析的基本操作，掌握定量测定无机化合物的主要化学滴定的方法和原理，从而培养学生能用化学观点与方法来观察分析和解决实际问题的能力。

In order to construct the teaching models which are suited for the characters of students and the age and make the chemistry teaching perfecter we combine the multimedia network technology with the chemistry curriculum. The chemistry teaching which is carried out with the help of multimedia network technology is one important aspert in the study of middle school chemistry teaching.

因此通过将多媒体网络技术与化学学科课程进行整合，研究网络环境下的化学课堂教学，构建适应学生身心特点与时代特点的教学模式，优化中学化学课堂教学，是中学化学教学研究的一个重要方面。

The journal well informs the research advances of the chemistry of wood, wood components and wood products to chemists, pharmaceutist, biological scientists and wood and paper technologists, including the chemistry of pulping, lignin, cellulose, hemicellulose, extractives chemistry, wood and bark chemicals and biomass conversion or utilization etc.

该杂志为化学家，药剂师，生物科学家以及木材与纸张技术专家全面提供了木材化学，木材成分以及木材产品的研究进展，包括纸浆化学，木质素，纤维素，半纤维素，提取物化学，木材与树皮化学制品以及生物的数量转换或利用等等。

We learnt from the documents that the tobacco companies used chemicals to increase the addictiveness of nicotine, chemicals to disguise the harsh taste of nicotine, chemicals to widen the lung passages for faster absorption of the smoke, chemicals mask the taste, chemicals to add "flavour" and sweetness.

我们从烟草公司的文件中得知，烟草公司在香烟中添加化学物质以提高尼古丁的成隐性，添加化学物质以掩盖尼古丁的涩味，添加化学物质以扩张肺部通道从而加快烟的吸收，添加化学物质以掩盖烟的味道，添加化学物质以增加&滋味&和甜度。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。