大一学生实验室安全教育实效研究*

为考查线上线下混合安全教育模式实施后的实际效果,对天津理工大学化工、环安、机械、材料学院2020级大一学生进行实验室安全知识测试。结果表明:接受线上线下混合安全教育的大一学生安全知识的掌握情况较好;不足之处在于学生普遍对应急处置知识掌握较差。因此,在后续安全教育过程中,仍需进一步优化安全教育内容与模式,全面推进全员、全程安全教育。     

有机化学实验混合教学模式的设计与实践

通过介绍混合教学模式在有机化学实验课程教学中的设计、实施情况及效果评价与反馈等内容,与大家分享混合教学模式在有机化学实验课程教学中的应用经验与思考。     

简易多路气体分流装置在有机实验教学中的应用

介绍了一种简易多路气体分流装置,可以简单方便地将惰性气体分流供应多个学生同时使用,并确保每条支路气流量充足。该套装置可以提高操作的安全性同时减少资源的浪费,它拆装方便,可以在不使用时进行存放储藏,有效地减小占有空间。     

有机化学实验线上课程之扬长避短教学设计与实践篇

It has been two months since a boom of online education triggered by the epidemic in China. At present, we are keeping focus on how to optimize our online class. In the case of chemistry laboratory courses, there's not much that can be done to experimental operations through online teaching. While for the traditional teaching procedure, there is still room for improvement in terms of integrating research to teaching, interactivity, etc. This paper will present some design strategies for improving teaching the organic chemistry laboratory online. To be specific, it describes how teaching materials like the lesson plan and virtual lab were coordinated into the online teaching. And we will also discuss the holistic approach to a better outcome for students' active learning and integration research into teaching by redesigning multiple phases, such as the pre-laboratory preparation, live online class, experimental operations.     

Comparison of a single-use pH test strip and a glass electrode for potentiometric titration

The potentiometric titration of a carbonate mixture or an acetate solution is a common experiment in analytical laboratories. Typically, a glass electrode combined with a calomel or Ag/AgCl reference electrode is used to locate the equivalence points in neutralization titrations. The dissociation constants of weak acids and bases can be calculated from the pH at the half-neutralization point. Recently, a new commercial product for measuring pH has been developed. This novel acid–base detection strip is a single-use sensor that requires neither storage in a preservation liquid nor calibration prior to use. This study examined its suitability for the continuous monitoring of pH changes in potentiometric titrations of carbonate mixtures, acetate solutions, or ammonia solutions. There were no significant differences in the concentrations of solutions tested using a glass electrode and a pH test strip. The pK_a, pK_b, and pH values determined using the two systems differed by less than 5%. The results confirmed that the pH strips are suitable for continuously monitoring pH changes during neutralization titrations. However, the strips can only be used once.     

Microfluidic systems in clinical diagnosis

The use of microfluidic devices is highly attractive in the field of biomedical and clinical assessments, as their portability and fast response time have become crucial in providing opportune therapeutic treatments to patients. The applications of microfluidics in clinical diagnosis and point-of-care devices are continuously growing. The present review article discusses three main fields where miniaturized devices are successfully employed in clinical applications. The quantification of ions, sugars, and small metabolites is examined considering the analysis of bodily fluids samples and the quantification of this type of analytes employing real-time wearable devices. The discussion covers the level of maturity that the devices have reached as well as cost-effectiveness. The analysis of proteins with clinical relevance is presented and organized by the function of the proteins. The last section covers devices that can perform single-cell metabolomic and proteomic assessments. Each section discusses several strategically selected recent reports on microfluidic devices successfully employed for clinical assessments, to provide the reader with a wide overview of the plethora of novel systems and microdevices developed in the last 5 years. In each section, the novel aspects and main contributions of each reviewed report are highlighted. Finally, the conclusions and future outlook section present a summary and speculate on the future direction of the field of miniaturized devices for clinical applications.     

借鉴美国主流高校EHS体系建设我国的实验室安全文化

以美国化学类专业排名前30的高等院校的环境安全与健康管理体系(Environment,HealthSafety,简写为EHS)为研究对象,进行了信息的收集、分析与整合,从中总结出美国高校EHS管理体系的6个特点;进一步介绍了美国高校EHS管理体系架构的确立与运作。结合目前我国高校实验室安全管理存在的主要问题,提出了建设、发展和丰富我国高校的实验室安全文化是当前最基础性的建设任务之一,以期引起高校管理部门对安全问题的真正重视并落实到行动中。     

大学生化学竞赛对实验教学改革与创新人才培养的促进作用*

大学生的化学竞赛是课内实验教学的有效延伸,也是从学生视角对实验教学效果的有效检验。通过分析和比较学生参加化学实验竞赛的过程和效果,能有效促进化学实验教学改革、课程建设及创新人才的培养。近年来吉林大学化学学院学生实验竞赛的成绩显著提高,一方面通过化学竞赛激发本科生喜爱化学和开展化学研究的热情,增加学习的主观能动性;另一方面通过竞赛发现问题,在解决问题的过程中促进实验教学改革和课程建设,学院“三阶段”模式的竞赛活动开展,更加有利于培养学生的创新意识和创新能力,促进了化学创新人才的培养。     

高校实验室安全教育在线资源调查研究*

对国内高校实验室安全教育在线资源现状进行调研。调查结果表明:在线资源主要有慕课、虚拟仿真实验及安全教育考试系统。因此,在安全教育过程中,可充分利用现有线上资源,弥补线下教学因时间有限、容量有限导致的不足,从而提高安全教育实效。线上、线下安全教育如何有机结合从而最大限度地发挥其在高校安全教育中的作用,仍需不断探索。     

仪器分析实验教学方法探索——探询-科研型教学模式

探索了探询-科研型实验教学模式在仪器分析实验教学中的应用。通过新实验教学模式的摸索,激发学生参与实验的热情,提高学生的科研、协作意识,达到提高实验教学质量的目的。