Teaching Status and Teaching Reform Ideas of Physical Chemistry Experiments for Food Quality and Safety Major

Physical chemistry experiments are an important branch of chemical experiments.In view of problems and shortcomings in physical chemistry experiment teaching of food quality and safety major in Chengdu University,the teaching methods of physical chemistry experiment course of food quality and safety major were explored and practiced,aiming to arouse students enthusiasm for experiments and cultivate their ability of independent learning,comprehensive thinking and independent problem solving.

Global Comprehensive Sensitivity Analysis of Arch Dam Construction Parameters Based on Orthogonal Experiment

The construction of arch dams exhibits high uncertainty. Sensitivity analysis of construction parameters is important for the design and optimization of dam construction duration. However, current research cannot fully consider the combined influences of multiple parameters on the total construction. To effectively analyze the duration of arch dam construction, this study proposes a global comprehensive sensitivity analysis method in view of the whole process of arch dam construction based on an orthogonal experiment. This method could comprehensively consider the influence of the construction parameters that may lead to the uncertainty of construction duration. In addition, this method is able to identify the key parameters that may have a significant effect on duration uncertainty and sums up the general rules of combined parameters’ interaction effect, which provides a scientific basis for reasonable optimization of the duration of dam construction. © 2017, Tianjin University and Springer-Verlag GmbH Germany.

Comprehensive experiment and evaluation on safety due to fully-mechanized mining under the Xitian River at Linxin Mine

L3414 mechanized mining working face (No.14 coal seam) of Lingxin Mine is under the Xitian River.The mining disturbed zone where rock properties and conditions have been changed due to mining, the safety and environmental protection were con- cemed greatly. Based on engineering geological environment of L3414 working face and mining factors, the color bore-bole TV inspecting, leakage of drilling fluid monitoring, simulation experiment, numerical computing, in-situ ground stress measurement and subsidence measurement, etal, these programs contribute to the formation of a scientific basis for control water safe mining and normal mining or environmental protection in the condition of existing fully-mechanized mining.

Computer Management of Quantitative Analysis Chemistry Experiment

The application of computer in the quantitative analysis chemistry experiment is a chemistry experiment teaching applications software, developed by Visual Basic （6.0）, based on the content of quantitative analysis chemistry experiment of chemistry major in higher institute. This software has the function of the automatic processing the experimental data, the automatic generation of test report copies, and the automatic evaluation of students＇ experimental results, which solve the reliability, objectivity and accuracy problems of the students＇ experiment data processing and evaluation, and avoid interference with human factors. The software has the characteristic of the easy installation, the easy operation, the strong practicability, pertinence, the systematicness and the running stability, so it provides a platform in the quantitative analysis chemistry experiment for the students＇ assessment system of automatic processing, and it has a high popularization value. The project＇s technical route design is reasonable, the research method is correct, and the experimental data processing results are reliable, which has reached the leading domestic level in the quantitative analysis chemistry experiment teaching field of computer data processing. And this project has been through the achievements appraisal of Gansu Provincial Sci. ＆ Tech. Department.

Micro-polymer Chemistry Experiment Teaching Research

For nearly thirty years, there has been made great progress in micro-polymer chemistry experiment teaching which has these characteristics that using less reagents, less pollution and more portable in comparison with the conventional experiment. In China, Zhou Ninghuai and others began to go on micro-scale experiment research firstly and Professor Li Qingshan who brought this innovation to polymer organic synthesis experiment has done a lot of works in micro-polymer chemistry experiment teaching. To carry out the study of micro-polymer chemistry experiments not only accords with teaching methods and reform, but also conforms to the trend of the times of green chemistry. So the research and application of micro-polymer chemistry experiment have broad prospects.

Thermal perception method of virtual chemistry experiments

Background With the aim of addressing the difficulty in identifying temperatures in virtual chemistry experiments,we propose a temperature-sensing simulation method of virtual chemistry experiments.Methods We construct a virtual chemistry experiment temperature simulation platform,based on which a wearable temperature generation device is developed.The typical middle school virtual experiments of concentrated sulfuric acid dilution and ammonium nitrate dissolution are conducted to verify the actual effect of the device.Results The platform is capable to indicate near real-world experimental situations.The performance of the device not only meets the temperature sensing characteristics of human skin,but also matches the temperature change of virtual chemistry experiments in real-time.Conclusions It is demonstrated that this temperature-sensing simulation method can represent exothermic or endothermic chemistry experiments,which is beneficial for students to gain understanding of the principles of thermal energy transformation in chemical reactions,thus avoiding the danger that may be posed in the course of traditional teaching of chemistry experiments effectively.Although this method does not have a convenient enough operation for users,the immersion of virtual chemical experiments can be enhanced.

Simulation Experiments of Land Surface Physical Processes and Ecological Effect over Different Underlying Surface

Based on the existing Land Surface Physical Process Models(Deardorff, Dickinson, LIU, Noilhan, Seller, ZHAO), a Comprehensive Land Surface Physical Process Model (CLSPPM) is developed by considering the different physical processes of the earth's surface-vegetation-atmosphere system more completely. Compared with SiB and BATS, which are famous for their detailed parameterizations of physical variables, this simplified model is more convenient and saves much more computation time. Though simple, the feas...

COMPREHENSIVE MATHEMATICAL MODEL OF MICROCIRCULATORY DYNAMICS (Ⅰ)——BASIC THEORY

Under the basis of physiological data, a nonlinear and unsteady comprehensive mathematical model of microcirculatory dynamics with distributed parameters is developed. Hemodynamics, interstitium dynamics, lymph dynamics, dynamics of protein transport, oxygen dynamics, dynamics of heat transfer, and myogenic and metabolic regulation procedures are included. The interactions between these factors were comprehensively exhibited. The influences of arteriolar vasomotion and nonlinear viscoelasticity of blood in arteriole are considered. A simplified vessel network consisting of arteriole, open and reserved capillaries, venule, initial lymphatics and arteriole_venule anastomose is adopted as the geometrical model. This kind of comprehensive mathematical model is helpful in analyzing clinical data and developing a “numerical experiment method” in microcirculation research.

以“学”为中心的问题式实验教学改革

基础化学实验不仅可以验证化学理论和训练实验技能,更应注重学生分析问题、解决问题能力的提升。针对基础学科拔尖学生的培养,我们本着因材施教的理念,开展了基础化学实验课程的教学内容、知识体系、教学方法的改革和实践。通过构建以“学”为中心、问题为导向的教学模式,系统提升实验教学在人才培养中的效果和作用。

面向林学专业群的有机化学实验教学内容改革实践与探索

作为高等学校公共基础课,有机化学实验因教学资源不足,普遍存在教学内容千篇一律、与专业特色契合度低等问题,导致学生学习动力不足。本文结合西南林业大学实际,尝试将具有植物资源培养、开发、利用的相关专业组成林学专业群,并针对该专业群,构建了以天然产物提取、分离、纯化、鉴定为主线的有机化学实验教学体系。学生期末考试表现及问卷调查结果表明,新教学体系对提升学生学习兴趣、改善学生培养质量具有显著的推进作用,同时也为在教学体系中融入农林特质提供了思路。

多效并举建设化学实验中心,服务高质量实验教学

在多年的实践过程中,针对本科化学实验教学面临的种种挑战,郑州大学化学实验教学中心多效并举,形成了一系列特色鲜明的教学管理方法,有效服务了高质量化学实验教学工作的开展。本文介绍了郑州大学化学实验教学中心建设中的一些举措和取得的成效,希望能为高校化学实验教学工作和管理服务提供有益的参考借鉴。

“纳米乳液的制备、表征及粒径调控”实验的课程思政设计

将化学竞赛成果转化为具有农业特色的实验项目“纳米乳液的制备、表征及粒径调控”,并引入到物理化学实验教学中。通过实验使学生掌握纳米乳液的制备表征方法并研究制备因素对性质的影响,推动了农科和理科的融合渗透,培养了学生的跨学科思维,提高了科学素养。引导学生深刻认识纳米乳液对于减少农药使用量、保护生态环境的重要意义,关注国家粮食安全和食品安全等战略需求,加强了学生的绿色发展意识,激发了学生服务三农的责任感。

固-液界面接触角测定实验的课程思政设计

固液界面接触角的测定是一个重要的物理化学实验,本案例结合特殊润湿性材料可处理含油废水这一科研进展,将其改进为一个融入课程思政元素的综合创新实验,不仅能提升学生的学习兴趣,还能引导学生学会理论联系实际,利用所学专业知识来保护自然、治理环境,培养学生的社会责任感和专业自豪感,有助于达成创新型人才培养目标。

将腐蚀与防护实验和国家重大工程衔接的课程思政案例设计

将胶州湾跨海大桥材料的腐蚀防护研究作为实际应用案例引入物理化学实验教学。通过结合工程实际改进实验,增加了相关材料在不同腐蚀介质中的腐蚀行为研究等内容,对相关材料及几类防护措施的防护效果进行了比较研究。实验将原物理化学实验中涉及的线性扫描伏安(极化曲线测量)和电化学阻抗方法进行了组合,对Q235和Q275两种合金钢、锌合金和镁合金两种牺牲阳极材料、无涂层和有环氧涂层的钢铁在模拟海水和真实海水两种电解质溶液环境中的腐蚀性能和防护效果进行了研究。改进后的实验可以增强学生学以致用的意识,增强他们对工程问题的综合性和复杂性的认识,还可以培养团队意识和合作能力,通过培养腐蚀防护意识和绿色环保意识强化学生的学科素养和社会责任感。

基于OBE理念的分析化学实验课创新教学设计

设计“任务驱动、问题导向、创新发展”教学模式,通过革新教学理念、重构教学模式、线上线下相结合等措施,培养学生创造性思维、实践技能以及全面发展的潜能.

基于科教融合理念构建药学专业综合实验

将科研成果转化为药学本科专业综合实验项目,探究儿茶治疗阿尔茨海默病的分子机制。以网络药理学为主要方法,结合分子对接技术对儿茶中所含化学活性成分、作用靶点、信号通路等进行了研究。从中药系统药理学技术平台数据库中共筛选得到11个儿茶有效成分, 130个儿茶与阿尔茨海默病的共同靶点。Autodock软件进行分子对接结果显示,儿茶中的有效成分可通过调节关键靶点蛋白和相关信号通路治疗阿尔茨海默病。本综合实验的设置有助于提高学生的创新思维和实践能力,鼓励学生用科研的视角解决未知的科学问题。

以药物开发为中心的药学综合设计性实验课程设计

实验教学在培养药学本科生理论知识与实践能力上发挥着关键作用。在基于地方高校“双一流”建设的新形势需求下,探索以药学本科教育为核心的实验教学新方法和新观念尤为重要。药物研发是药学专业人才培养的主要目标,是综合运用药理学、药物化学、药剂学、药物分析等学科知识进行再生产的过程,大多数学生也将从事与药物研发、生产相关的职业。设计药物研发全过程的综合设计性实验,对课程的设计、实施、质控和存在的问题及解决办法进行了探讨,为培养高素质、创新型药学人才提供了参考。

钢筋与混凝土粘结力学性能实验教学设计

该文以增强大学生创新实践能力培养为目标,开展了混凝土结构基本原理课程综合性实验教学研究,设计并实施了钢筋与混凝土的粘结力学性能综合性实验。通过混凝土抗压强度实验、钢筋与混凝土拉拔实验、粘结强度影响因素及钢筋滑移分析等教学内容增强学生对专业知识的理解、掌握及灵活应用,同时提升学生的实践能力及创新能力。实验教学实践表明,该综合性实验教学有效提升了教学效果,学生反馈良好,为高校新工科建设及学生的创新实践能力培养提供了有益参考。

基于OBE理念的生物工程综合实验课程探索与实践

基于成果导向教育(OBE)理念,旨在构建以培养科技创新型、实践应用型人才为目标的生物工程综合实验教学体系。教学内容源自授课老师科研课题,汇聚生物工程上、中、下游关键环节。课程设计采用教师课题背景介绍、学生自主实验设计、师生讨论细化步骤、实验实践验证结果、结果分析总结5个步骤,以此锻炼学生的创新思维及实践能力。采用多元化评价考核体系界定学生实验成绩,用以涵盖学生获得的综合研究能力和理工科创新能力。此实验课程激活学生自主创新和解决复杂生物工程问题的能力,并获得一系列科研成果。本课程培养目标及执行效果与国家“创新驱动”发展战略契合,相关经验可为其他理工科专业教学改革提供参考。

材料化学实验课程教学中的思政元素设计

材料化学实验作为材料化学专业的必修课程,其教学内容中蕴含丰富的思政元素。通过修订课程德育目标,完善课程教学设计,延伸课程教学内容,依托学校实体实验教学和材料化学实验教学平台,采用线上线下混合教学模式,将课程思政元素深度融入到材料化学实验教学中,充分发挥价值引领、品格塑造的主导性,切实做到实验课程教学与思政教育同向同行,实现卓越的课程思政育人效果。