“物理化学”课程科教融汇式教学方法探索与发展

科教融汇是新形势下培养高素质人才的一种重要方式,而“物理化学”作为一门基础课程,对于人才的培养起到了关键性的奠基作用,因此,发展科教融汇式教学方法是高校“物理化学”课程教学改革的必然趋势,符合当前国家对高素质人才的培养需求。文章从“物理化学”课程特点出发,探讨了科教融汇式教学方法与“物理化学”课程教学之间的联系,并肯定了科教融汇式教学方法应用于“物理化学”课程教学之中将有利于增强学生的科研热情和学以致用的能力等作用。

应用型本科高校“物理化学”课程的教学质量提升策略

应用型本科高校具有鲜明的办学特点和专业特色,能够为社会经济新模式培养复合型、创新型人才。“物理化学”是理工类专业的基础核心课程,基于当前学生在“物理化学”学习过程中存在的解决复杂实际问题能力欠缺的现状,分析了影响物理化学教学质量的关键因素,提出了推进教学效果提质增效的实践策略,为提高“物理化学”课程教学质量提供借鉴。

“物理化学”课程在轻化工程专业“卓越工程师”培养中的教学实践与探索

"物理化学"是武汉纺织大学轻化工程专业卓越工程师班的专业基础课。文章从教学内容的安排、专业与课程教学之间的联系、工程人才培养目标对课程教学的要求、综合实验设计以及教学方法的探索等几个方面,介绍"物理化学"课程在轻化工程专业"卓越工程师"培养中的教学实践。

“物理化学”课程思政教学改革的探讨与研究

课程思政的提出,其目的是构建全员、全过程、全课程的育人格局,是将思想政治教育与各类课程进行有机结合,形成协同效应。以开展课程思政为契机,探究了“物理化学”课程思政的意义,并将社会主义核心价值观的思想教育和中华优秀传统文化的情感教育作为该课程的思想政治目标。同时,把民族使命感和自豪感、爱国热情和社会责任感以及礼仪文化等思想政治元素融入课程设计和课堂教学过程中,以促进课程思政建设和增强课程思政实效,从而提升教学效果和人才培养质量。

迁移和具象的思维在“物理化学”教学改革中的探索

为培养新时代高素质化学化工类人才,提高教育教学水平,以“物理化学”课程为研究对象,基于工程教育专业认证标准对工科院校教育质量提出的新要求,采用迁移和具象的教学思维改革传统的教学方式,以具体案例分析为授课手段,引导学生采用浸入式学习方法,可有效提高学生学习的主观能动性,增强学生将理论知识应用于解决实际生产问题的能力。通过对“物理化学”课程教学改革,可全面提高大学生综合素质,为培养企业所需的应用型人才打下坚实的基础。

项目式学习法在“物理化学”教学中的应用

针对“物理化学”教学中存在的概念抽象、学生掌握和应用情况不佳的问题,开展了项目式学习法在“物理化学”教学中的应用研究。通过项目设计、组成学习小组、实施项目学习、总结汇报项目成果以及项目学习成果评估等过程,将“物理化学”的知识点分解在项目学习中,通过学生自主探索,建立“物理化学”知识体系,并学会运用相关理论解决实际问题。研究表明,参加项目小组的同学具有强烈的学习动力,考试成绩明显高于未参与同学。通过项目学习,同学们的知识理解和运用能力、团队协作能力、口头表达能力均得到了提升,对项目学习持认可态度。项目式学习模式可在大学的学科教学中推广应用。

“微助教”平台在“物理化学”课程混合式教学模式中的探索与实践

基于地方高校对人才培养模式的改革需求,利用“微助教”平台探讨了“以成果为导向,以学生为中心”的“物理化学”课程线上线下混合式教学模式的改革与实践,即从教学设计、教学方法、教学内容及教学考核与评价等方面实施改革,构建“物理化学”课程的新型教学模式。实践表明,该教学模式能够提高“物理化学”课程的教学质量,激发学生的学习兴趣,培养学生自主学习能力和创新能力,提高学生解决实际问题的综合能力,提高人才培养质量。

药学专业“物理化学”“液体的表面现象”教学设计

"物理化学"中"液体的表面现象"在药学领域应用广泛。为了使药学专业的学生更扎实地掌握该知识点,从新课导入、新课教学以及新课巩固3个环节重新进行教学设计,以"提出问题-分析和解决问题-知识拓展和延伸"为主线,采用讲授式、启发式、讨论式和实验探究式等相结合的多元化教学方法,突出以"教师为主导,学生为主体"的思想,注重学生的思维引导和能力培养,充分调动学生的主动性和积极性,让学生在轻松愉快的氛围中进行知识的探究,极大地提升了教学效果。

全程融入式的“物理化学实验”课程思政教育探索

“物理化学实验”课程开展过程中,对融入课程思政教育进行探索与实践,开发思政元素与思政教育融入角度。从教学模式、教学方法以及教学内容三大维度,全面化、立体化融入思政教育。将思政教育自然地融入实验教学全过程,实现对学生的物理化学理论知识、实际操作应用及思想政治教育的协同培养,提升学生的综合素质。

“虚拟实验微课程”在“物理化学实验”教学中的应用研究——以“蔗糖水解反应动力学”实验为例

随着现代信息技术的飞速发展和网络资源的不断丰富,将微课程和虚拟实验引入到“物理化学实验”教学中成为可能。文章以“蔗糖水解反应动力学”实验为例,提出了一种“线上线下—虚拟实验与微课程相结合”的“物理化学实验”教学新模式,有效弥补了传统实验教学中存在的不足,解决了实验仪器短缺、实验存在安全隐患、实验时间和地点受限等问题,激发学生对“物理化学实验”的兴趣,培养创新意识,提高实践能力。

研究性“物理化学实验”教学模式创新分析

现代教育正在深化改革,越来越注重培养学生的问题思考和解决能力,而研究性学习和教学模式符合这一趋势。“物理化学实验”课程的教学要求比较高,应用物理化学研究性教学模式,是目前课程教学研究的重点方向之一。通过“物理化学实验”的研究性教学,不但能加深学生对物理化学理论知识的理解,使学生掌握相应的基本操作技能,培养学生的科学思维、综合分析解决问题及科学探究能力,而且能培养学生的创新能力。以忻州师范学院化学专业“物理化学实验”教学为例,在分析“物理化学实验”教学现状及问题的基础上,以培养学生的创新能力为目标,探索“物理化学实验”教学改革,培养合格的化学教师,同时还应培养学生的“大国工匠”精神,为新时期社会的发展注入更多新鲜的血液。

混合式教学模式在“物理化学实验”中的探究与实践

针对传统线下教学模式在“物理化学实验”课程开展中所存在的难以满足学生的个性化发展、理论课程和实验课程教学进度不一致及单一教材难以满足多元化的教学需求等问题,结合“雨课堂”应用于教学中的优势,该文探讨了一种基于“雨课堂”的线上线下混合式的教学模式在“物理化学实验”课程中的应用模式,并将该模式引入实际的教学过程中,结合具体的教学实例对教学效果进行多维度的分析。研究表明,基于“雨课堂”的混合式教学模式的引入能很好地调动学生的学习热情,提高学生的学习效率,对“物理化学实验”的教学改革具有很好的借鉴作用。

Process Optimization of Cu-en/AP Composite Microspheres Preparation by Electrostatic Spray Method Based on ANSYS Simulation

To investigate the process optimizationof Cu-en/AP composite microspheres preparation via electrostatic spraying,and to reveal the effects of droplet properties and flow rate variations on the experimental results during the electrostatic spraying process,the prepared process parameters of Cu-en/AP composite microspheres by electrostatic spray method under the orthogonal experimental design simulated by ANSYS(Fluent).The influence of flow rate,solvent ratio,and solid mass on the experimental results is examined using a controlled variable method.The results indicate that under the conditions of a flow rate of 2.67×10^(-3)kg/s an acetone-to-deionized water ratio of 1.5∶1.0,and a solid mass of 200 mg,the theoretical particle size of the composite microspheres can reach e nanoscale.Droplet trajectories in the electric field remain stable without significant deviation.The simulation results show that particle diameter decreases with increasing flow rate,with the trend leveling off around a flow rate of 1×10^(-3)kg/s.As the solvent ratio increases(with higher acetone content),particle diameter initially decreases,reaching a minimum around a ratio of 1.5∶1.0 before gradually increasing.Increasing the solid mass also reduces the particle diameter,with a linear increase in diameter observed at around 220 mg.Cu-en/AP composite microspheres with nanoscale dimensions were confirmed under these conditions by the final SEM images.

Catalytic wet oxidation of aniline over Ru catalysts supported on a modified TiO_2

The catalytic wet air oxidation of aniline over Ru catalysts supported on modified Ti 2 （Ti 2, Ti0.9Ce0.1O2, Ti0.9Zr0.1O2） is investigated. A series of characterization techniques are conducted to determine the relationship between the physico-chemical properties and the catalytic performance. As a result of the good metal dispersion and large number of surface oxygen species, the Ru/Ti0.9 Zr0.1O2 catalyst presents the best catalytic activity among the tested samples. The effects of the operating conditions on the reaction are investigated and the optimal reaction conditions are determined. Based on the relationship between the by-products concentration and the reaction time, the reaction path for the catalytic oxidation of aniline is established. Carbonaceous deposits on the surface of the support are known to be the main reason for catalyst deactivation. The catalysts maintain a constant activity even after three consecutive cycles.

Chemical Constituents from Starfish Asterias rollestoni

Aim To investigate novel bioactive and structural metabolites from marineorganisms. Methods Column chromatography in association with semi-preparative HPLC were used for theisolation of compounds. 1D and 2D NMR, IR, UV, and MS were employed for structure elucidation.Results From the butanol fraction of the 95% EtOH extract of the starfish Asterias rollestoni, a newcompound N^7 -2'-deoxypseudoxanthosine (1), along with sixteen known compounds, 2'-0-methyl-inosine(2), 2'-deoxyinosine (3), 2'-0-methylguanosine (4), inosine (5); thymine (6), uracil (7), thymidine(8), deoxyuridine (9), 2'-0-methyluridine (10), ( ― )-(1S, 3S)-1-methyl-1, 2, 3,4-terrahydro-β-carboline-3-carboxyl-ic acid (11), ( ― )-(1R, 3S)-1-methyl-1, 2, 3,4-tetrahydro-β-carboline-3-carboxylic acid (12) , ( ― )-(3S)- 1, 2, 3,4-tetrahydro-β-carboline-3-carboxylic acid (13), L-tryptophan (14), L-phenylalanine (15), 3-carboxyindole (16), and p-hydroxybenzoic acid (17) , have been isolated. Conclusion Compound 1 is a newnatural product, and compounds 8, 9 and 10 are isolated from natural sources for the first time, andthe known compounds except 14 and 15 are first reported from starfish Asterias rollestoni.

Synthesis of aluminum tri-polyphosphate anticorrosion pigment from bauxite tailings

Aluminum tri-polyphosphate was synthesized from bauxite tailings and phosphoric acid with a P/A1 molar ratio of 3. This is highly advantageous from a waste recycling perspective as bauxite railings are generally regarded as unusable waste. The acidity, whiteness and mean particle size of prepared aluminum tri-polyphosphate are all improved after modification. The possibility of using modified aluminum tri-polyphosphate as an anticorrosive pigment was also investigated by electrochemical impedance spectroscopy. The resistance of the coatings with modified aluminum tri-polyphosphate is 7×10^7Ω for 40 d of immersion, which is superior or at least comparable to that of coatings containing APW-2, which exhibits a resistance of 5.7×10^7Ω.

Applications of seismic techniques to gas hydrates prediction

Based on the sensitivity of geophysical response to gas hydrates contained in sediments, we studied the prediction of gas hydrates with seismic techniques, including seismic attributes analysis, AVO, inverted velocity field construction for dipping formations, and pseudo-well constrained impedance inversion. We used an optimal integration of geophysical techniques results in a set of reliable and effective workflows to predict gas hydrates. The results show that the integrated analysis of the combination of reflectivity amplitude, instantaneous phase, interval velocity, relative impedance, absolute impedance, and AVO intercept is a valid combination of techniques for identifying the BSR （Bottom Simulated Reflector） from the lower boundary of the gas hydrates. Integration of seismic sections, relative and absolute impedance sections, and interval velocity sections can improve the validity of gas hydrates determination. The combination of instantaneous frequency, energy half attenuation time, interval velocity, AVO intercept, AVO product, and AVO fluid factor accurately locates the escaped gas beneath the BSR. With these conclusions, the combined techniques have been used to successfully predict the gas hydrates in the Dongsha Sea area.

Primary Research on WSeveral Theorems,Laws and Corollaries of Hydrology

The conceptions of theorems, laws and corollaries of hydrology were put forward. Combining with hydrology practice, several theo- rems, laws as well as corollaries of hydrology were summarized. The study provided some references for accelerating the development of hydrology theory in these aspects and promoting the improvement of its production technology.

Ion Product of Pure Water Characterized by Physics-Based Water Model

Pure water has been characterized for nearly a century, by its dissociation into hydronium （H3O）1＋ and hydroxide （HO）1- ions. As a chemical equilibrium reaction, the equilibrium constant, known as the ion product or the product of the equilibrium concentration of the two ion species, has been extensively measured by chemists over the liquid water temperature and pressure range. The experimental data have been nonlinear least-squares fitted to chemical thermodynamic-based equilibrium equations, which have been accepted as the industrial standard for 35 years. In this study, a new and statistical-physics-based water ion product equation is presented, in which, the ions are the positively charged protons and the negatively charged proton-holes or prohols. Nonlinear least squares fits of our equation to the experimental data in the 0-100℃ pure liquid water range, give a factor of two better precision than the 35-year industrial standard.