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关键词： Radiometric characterisation of light sources   Radiometric power   Irradiance   Luminous efficacy   Luminous efficiency   Emission spectra  

摘要： Light sources are an indispensable component of an overwhelmingly large number of analytical methods. Radiometric characterisation of light sources in analytical chemistry is therefore of fundamental importance. This review presents up to date knowledge on methods to characterise radiometric properties of light sources in terms of radiometric power, irradiance, brightness, luminous efficacy, luminous efficiency and emission spectra, all of which are crucial parameters for their use in analytical chemistry. Special attention is paid to radiometric characterisation of new generations of light sources with focus on miniaturised and low-cost light sources suitable for portable analytical instrumentation. Miniaturised light sources, especially new generations of solid-state light sources including solution processable quantum dot light emitting diodes (QLEDs), organic LEDs (OLEDs) as well as conventional LEDs and lasers, are radiometrically characterised through various spectrophotometric, actinometric as well as new facile radiometric methods. Although the areas of analytical use of new light sources including QLEDs, OLEDs as well as other important light sources such as deep ultraviolet (DUV) and infrared LEDs in analytical chemistry are yet to reach their potential, their radiometric characterisation opens future options for their wider deployment in analytical chemistry. (C) 2020 Elsevier B.V. All rights reserved.

关键词： 期刊杂志   化学文摘社   心身疾病   高分子化学   毒物学   无机化学   分析化学   有机化学  

摘要： 《临床心身疾病杂志》2012年始被美国《化学文摘》(Chemical Abstracts,CA)收录,这标志着《临床心身疾病杂志》向国际化又迈出了重要的一步。CA是世界上最大的化学文摘库,也是国际公认的著名的期刊检索系统之一。CA创刊于1907年,由美国化学协会化学文摘社(CAS of ACS,Chemical Abstracts Service of American Chemical Society)编辑出版,涉及了包括无机化学、有机化学、分析化学、物理化学、高分子化学,以及冶金学、地球化学、药物学、毒物学、环境化学、生物学和物理学等诸多学科。CA收录了世界各国9000多种有影响的期刊杂志。

关键词： 在线课程   对话教学   分析化学实验   认知负荷   创新思维  

摘要： 针对在线课程易于浅层化的挑战,本研究创造性地引入虚拟角色对话用于在线课程的资源建设。研究以“分析化学实验”课程为例介绍了课程资源开发过程、“师问-生答”等多种师生对话设计以及学习者抽样访谈的质性评测。研究发现,相对于常见的独白讲授式教学方式,虚拟角色对话式教学方式能够显著提升在线课程学习者的积极情感因素,引发兴趣和维持注意力,分解认知负荷;教学对话给学生的代入感和认知冲突可以促进“冲突-反思-生成建构”的深度学习过程和高阶思维发展。初学者对虚拟角色对话教学方式的在线课程资源表现出了显著偏好,有利于其在学科入门课程和翻转课堂中应用。质性测评阶段的研究结论在课程投入使用后也得到了初步的量化验证,未来“师问-生陷入沉思”“生问-师难以定论”等对话设计有助于创新思维培养,是课程资源的改进方向。

ISBN: (纸本)9787568064996

摘要： New methodologies, state-of-the art instrumentation and materials, and automated systems—offering precise and accurate analytical data—have become essential prerequisites in this field. [...]chemometrics have been proved to be a beneficial tool for the optimization of method parameters and can also identify and minimize the sources of variability that may lead to poor method robustness. According to their findings, the half-time elimination of the drug was relatively shorter after intragastric administration compared to the intravenous one. According to their findings, there were significant differences in the pharmacokinetic profiles—especially in the Cmax and AUC0-∞ parameters of doxorubicin—indicating that hernandezine could improve the absorption of the anticancer drug. [...]not least, Drs. Balayssac and Gilard and their colleagues in the publication “Chemometric Analysis of Low-field 1H NMR Spectra for Unveiling Adulteration of Slimming Dietary Supplements by Pharmaceutical Compounds” presented the development of a novel chemometric-based NMR approach for unveiling the adulteration of slimming dietary supplements [12].

关键词： 无机化学  

ISBN: (纸本)9787564376062

摘要： 无机及分析化学实验是一门独立的基础实验课程，是化学实验的重要分支，也是学习其他化学实验的重要基础。由于本课程是学生进入大学后开设的第一门实验课程，因此本书全面详尽地介绍了化学实验的预备知识、无机及分析化学实验中常用仪器和基本操作，对奠定学生良好的实验基础特别重要，是必须熟练掌握的基本功。本书中实验按基本实验、提高型实验、研究创新型实验分为三大类。本书可作为综合性大学化学、生命科学、材料以及环境等专业，农林院校及医学院校相关专业本科生的实验教材。……

ISBN: (纸本)9787568065108

摘要： Nowadays, academic analytical chemistry has become the main discipline and very common all over the world. Analytical chemistry plays an important role in the pharmaceutical industry, environmental monitoring, medical diagnostics, food production, and forensic sciences. It is also of great importance in different research areas. In these areas, method development in itself involves sensitive, faster, cheaper, simpler, and/or more environmentally friendly analytical methods. Analytical chemistry will continue to be an important part of undergraduate and postgraduate education in chemistry, not only for natural scientists and engineers but also for truly translational and interdisciplinary initiatives.

关键词： 以学生为主体   无机及分析化学实验   教学改革   探究  

摘要： 以无机及分析化学实验的现状为引入点,分析实验中存在的问题,分别从教学模式、教学方法及课程考核改革等方面,对如何开展以学生为主体的无机及分析化学实验进行讨论与探究。