A simple direct enzyme immunoassay of antibodies based on the differences in diffusion rates in a gel of a synthetic antigen and of its complex with antibodies

A simple direct enzyme immunoassay for semiquantitative detec tion of antibodies is suggested. It is based on the difference in diffusion rates in a gel for a synthetic low-mol-wt antigen and of its complexes with antibodies to be detected. Sensitivity and specificity of the devel oped assay are equal to an ELISA method. The assay has been tested with antibodies against HIV protein gp41 in rabbit serum. Possible applications and limitations of the method are discussed.     

材料化学实验课程体系的改革与建设

结合材料化学实验课程自身的特点及材料化学实验教学的经验，系统阐述我院材料化学实验改革的思路，通过深化材料化学实验教学改革，提高任课教师的学术水平，更新教学内容，优化教学模式，推进教材的系统性建设，实现材料化学实验教学质量的提高，激发学生的学习热情与兴趣，进一步培养学生的创新能力。     

Rasch模型在“化学键”概念教学评价中的应用研究

运用Rasch模型探查高二学生对"化学键"概念的认知情况，运用Conquest软件和Winsteps软件对测试结果进行分析。结果表明：基于Rasch模型编制的测试卷能客观有效地检测学生对"化学键"概念的理解，为一线教师的有效教学提供学情基础。     

基于课程标准的教学——以常见阴、阳离子的检验为例

以常见的阴、阳离子的检验为例，研究了如何实施基于标准的教学。校本教材的开发为标准、教材、教学、评价的一致性提供保障；以学生应知的和能做的驱动课堂活动；根据达成标准应有怎样的质量表现，试卷编制先于教学设计。课堂上，“教”“学”双方都明确学习目标，教师提供多种策略来满足学生多样的学习需要，如提供工具，搭建脚手架，并以“微”研究性学习的方式展开教学，给学生提供了充分的进步空间。     

Education by Teaching Analytical Chemistry in Romania

A review is given on the history of the development of analytical chemistry in Romania, its present role in University teaching, and on measures that are planned in order to improve teaching and education.Received January 12, 2003; accepted March 7, 2003 Published online July 16, 2003     

基于“超星直播+学习通”的在线教学示范

为了应对新冠病毒肺炎(COVID-19)蔓延和响应教育部"停课不停教,停课不停学"的号召,作者从"两问题三误区"入手分析了现有在线教学存在的问题,并对比了不同直播平台的优缺点,提出了在线教学的具体教学建议。以基于"超星直播+学习通"的在线教学为例进行了教学示范指导。     

通过教学过程和互动设计保障在线教学的效果

Based on the analysis of the courses and the investigation of students' online learning needs, an online teaching mode of "Tencent Classroom" and "Rain Classroom" with "split screen" is designed. This mode is used for the online teaching of "Foundation of Innovation and Entrepreneurship" and "Chemical Instrumentation and Automation". After two months of teaching practice, the teaching and learning were reflected and summarized, aiming to improve the performance of online teaching.     

“化学在抗击新冠肺炎疫情中扮演的重要角色”专题教学

Considering COVID-19 epidemic prevention and control, education materials were excavated and refined, such as chemical disinfectants, typical drugs used in clinical treatment or trial and materials for preparation of medical protective equipment. We have carried out thematic teaching on "The important role of chemistry in the fight against COVID-19 epidemic", and integrated ideological and political education into the thematic teaching. Through thematic teaching, we can make students feel the charm of chemistry subject, stimulate students' interest in learning chemistry, fully mobilize students' learning enthusiasm and initiative, strengthen students' confidence and courage to overcome difficulties, cultivate the students' professional disciplines literacy and scientific literacy, activate students' love for the motherland, the people and the Communist Party of China.     

微视频技术在基础化学实验教学中的实践应用

以高校基础化学实验"从海带中提取碘""三草酸合铁（Ⅲ）酸钾的制备"为例，分别探讨了微视频技术在化学基本操作实验和综合设计型实验中的具体应用；此外，举例说明利用Flash软件制作的虚拟微视频可以在仪器分析实验中清晰地再现仪器真实操作中的每一个步骤，弥补了学生在实验前无法实际操作仪器的不足。实践证明，微视频技术的应用，丰富了基础化学实验教学模式，增强了学生自主学习的能力和动手能力，提高了实验成功率和实验教学效果。     

研究型教学的新方法——U型7步探究法

受私董会U型7步研讨法的启发，提出了可用于研究型教与学的一种新方法：U型7步探究法。"U型"即探究问题有一个先下沉寻找本质再使问题清晰的过程，躬问、探究等7步为具体操作流程，由教练引导，案主为主，全员受益。还以一次成功的运作实例对方法进行了详细说明。