教学课程资源库 更多>>

关键词： 中国化学会   分析化学   年会   国家自然科学基金   华中师范大学   化学领域   化学学科   学术会议  

摘要： 中国化学会和国家自然科学基金委主办、华中师范大学承办的＂第十二届全国分析化学年会＂定于2015年5月8日~11日在武汉洪山大礼堂召开。这是我国分析化学领域三年一届的盛会,会议将就我国自上届学术会议以来分析化学学科的新成就、新进展进行学术交流和研讨,会议将组织分析化学前沿的大会报告、分组报告和讨论,并邀请部分国外学者和海外华裔学者与会。热忱欢迎广大的分析化学工作者踊跃投稿和参加会议。现将有关事项通知如下：

关键词： 多元化教学   药物分析   分析化学   实验课  

摘要： 药学课程改革已经成为药学教育的发展趋势,关系到新一代药学人才的培养。本文立足于药物分析实验课,从多元化教学的角度出发,以学生为中心,教师为引导,依托灵活的教学内容,通过TBL教学、双语课、网络化教学等方式建立了新的教学模式。

关键词： 分析化学   PBL教学法   药学专业  

摘要： 社会需求的变化和科技的发展对分析化学提出了新的要求。针对目前在高职高专院校分析化学教学中存在的问题,本文介绍了在高职高专药学专业的分析化学教学中进行PBL教学法的研究。认为PBL教学法能够调动学生的学习积极性和主动性,培养学生提出问题并解决问题的能力,提高学生的综合素质,可逐步在药学专业基础课程中推广和应用。

关键词： 师生互动   课堂教学   无机及分析化学   互动模式  

摘要： 师生互动是维持课堂教学顺利进行的基础。为满足当今大学生的情感需求,追求更好的课堂教学效果,师生关系需要从传统的"教与被教"转变为"主导和辅助"的互动关系,课堂教学的进行需要师生双方的维护。教师需要提高自身教学水平来做好主导工作,并通过组织教学活动来培养起学生的主人翁意识,鼓励学生参与到课堂教学互动中,从而起到"辅助"作用。本文在无机及分析化学教学实践的基础上,对师生间的这种"主导和辅助"的互动模式进行了讨论。

关键词： 高职分析化学   实验课   有效教学  

摘要： 在高职分析化学教学中,实验课既是教学重点,也是教学中的难点。当前,高职分析化学实验课的教学效率还不高,要提高高职分析化学实验课教学的有效性,教师应该正视和分析当前教学过程中存在的问题,结合高职学生的认知结构,改善教学方法,全面提高综合素质。

关键词： 中国化学会   分析化学   年会   国家自然科学基金   华中师范大学   化学领域   化学学科   学术会议  

摘要： 中国化学会和国家自然科学基金委主办、华中师范大学承办的“第十二届全国分析化学年会”定于2015年5月8日-11日在武汉洪山大礼堂召开。这是我国分析化学领域三年一届的盛会，会议将就我国自上届学术会议以来分析化学学科的新成就、新进展进行学术交流和研讨，会议将组织分析化学前沿的大会报告、分组报告和讨论，并邀请部分国外学者和海外华裔学者与会。热忱欢迎广大的分析化学工作者踊跃投稿和参加会议。现将有关事项通知如下：

关键词： GAS chromatography/Mass spectrometry (GC-MS)   CHEMICAL weapons   ANALYTICAL chemistry -- Technique  

摘要： The entry into force of the Chemical Weapons Convention (CWC) on the 29th of April 1997 was a landmark success in the field of arms control and disarmament. Fig.?1 The CWC outlaws the use, production and stockpiling of chemical weapons and bans or regulates precursors. A signature element of the CWC is the complex and far-reaching verification mechanism that is implemented by the Technical Secretariat of the Organisation for the Prohibitions for Chemical Weapons (OPCW) located in The Hague in the Netherlands. This includes declaration requirements for existing stockpiles, precursors and production facilities and their subsequent destruction under constant supervision of OPCW inspectors. Additional requirements include declaration of certain industrial sites and activities, inspections of industry sites as confidence-building measures and the requirement for state parties to the CWC to implement national legislation. In the case of a suspected violation of the CWC, the policy-making org

关键词： Subsurface constructed wetlands   Phosphorus   Secondary effluent from sewage treatment plant   Reaction kinetics model  

摘要： Different subsurface flow constructed wetlands were adapted to advanced treat sewage treatment plant secondary effluent and analyze the effect of phosphorus removal and its reaction kinetics model. The results showed that horizontal subsurface flow wetland removal of phosphorus in sewage exhibited a good removal characteristic and compared with horizontal zeolite wetland, horizontal limestone wetland exhibited better phosphorus removal effect, the removal rate basically retained at 66.3 +/- 3.32 to 92.0 +/- 4.82 %. In addition, based on the reaction dynamics simulation analysis, the results showed that two subsurface flow wetlands were in line with the characteristics of first-order kinetics equation, i.e. phosphorus removal process was basically carried out to a reaction.

关键词： ANALYTICAL chemistry -- History   PUBLIC health   HISTORY   MILK   ADULTERATIONS   SCIENCE   PROFESSIONALIZATION   GREAT Britain  

摘要： This article centres on a particularly intense debate within British analytical chemistry in the late nineteenth century, between local public analysts and the government chemists of the Inland Revenue Service. The two groups differed in both practical methodologies and in the interpretation of analytical findings. The most striking debates in this period were related to milk analysis, highlighted especially in Victorian courtrooms. It was in protracted court cases, such as the well known Manchester Milk Case in 1883, that analytical chemistry was performed between local public analysts and the government chemists, who were often both used as expert witnesses. Victorian courtrooms were thus important sites in the context of the uneven professionalisation of chemistry. I use this tension to highlight what Christopher Hamlin has called the defining feature of Victorian public health, namely conflicts of professional jurisdiction, which adds nuance to histories of the struggle of professionalisation and public credibility in analytical chemistry.

关键词： Complex mixture   Livestock operation   Fathead minnow   Gene expression   Steroid hormone  

摘要： Animal waste from livestock farming operations can contain varying levels of natural and synthetic androgens and/or estrogens, which can contaminate surrounding waterways. In the present study, surface stream water was collected from 6 basins containing livestock farming operations. Aqueous concentrations of 12 hormones were determined via chemical analyses. Relative androgenic and estrogenic activity was measured using in vitro cell assays (MDA-kb2 and T47D-Kbluc assays, respectively). In parallel, 48-h static-renewal in vivo exposures were conducted to examine potential endocrine-disrupting effects in fathead minnows. Mature fish were exposed to surface water dilutions (0%, 25%, 50%, and 100%) and 10-ng/L of 17 alpha-ethynylestradiol or 50-ng/L of 17 beta-trenbolone as positive controls. Hepatic expression of vitellogenin and estrogen receptor a mRNA, gonadal ex vivo testosterone and 17 beta-estradiol production, and plasma vitellogenin concentrations were examined. Potentially estrogenic and androgenic steroids were detected at low nanogram per liter concentrations. In vitro estrogenic activity was detected in all samples, whereas androgenic activity was detected in only 1 sample. In vivo exposures to the surface water had no significant dose-dependent effect on any of the biological endpoints, with the exception of increased male testosterone production in 1 exposure. The present study, which combines analytical chemistry measurements, in vitro bioassays, and in vivo fish exposures, highlights the integrated value and future use of a combination of techniques to obtain a comprehensive characterization of an environmental chemical mixture. Environ Toxicol Chem 2014;33: 1849-1857. Published 2014 Wiley Periodicals, Inc. This article is a US Government work and, as such, is in the public domain in the United States of America.