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关键词： 物理化学   教学研究   创新  

摘要： 物理化学是以物理和化学两门课程为基础而发展起来的课程,也是化学类的一门专业基础课。该课程具有强逻辑性和理论性,对化工类课程的学习都具有一定的意义。从教学方法、创新思维、学习兴趣等方面浅谈了培养学生逻辑思维能力和独立自主学习能力的方法,从而提高教学质量。

关键词： 混合式教学   物理化学实验   自主学习  

摘要： 基于微信公众号与超星泛雅平台,以上海理工大学物理化学实验课为例,设计了线上与线下相结合的混合式教学模式,结合微信公众号和超星泛雅平台的优势,对学生的学习效果进行量化管理。实践表明,混合式教学模式提高了学生的积极主动性和实验技能,培养了学生的科学探索精神,从而进一步提高了物理化学实验的教学质量。

关键词： 课程思政   物理化学   思政元素  

摘要： 为培养社会主义建设者和接班人,落实高校立德树人根本任务,高校“课程思政”教学改革势在必行。文章探讨了物理化学课程的特点、教学目标、课程内容设置、课程教学策略及“课程思政”与物理化学课相结合的重要意义。在物理化学课程教学中,为实现“课程思政”的有机融入,推动高等院校物理化学教学改革提供参考。

关键词： 实验教学   专业性   培养目标   职业  

摘要： 在矿物加工工程专业中的物理化学课程教学中,因其内容的深奥、数理逻辑性强,从而引起学生厌学的问题始终存在,导致教学效果不佳。原因是学生对该课程不够重视,且教师一般抛开专业而孤立的讲授物理化学,故对学生做好“职业生涯规划”教育,重视该课程在专业中地位和作用,重视实验教学,实验教学要与矿物加工试验相结合,对理论课程内容要进行整合以契合专业的需求是改进教学所要思考的问题。

关键词： 物理化学   教学体会   教学方法   教学内容  

摘要： 物理化学(Physical Chemistry)以物理的原理和实验技术为基础,研究化学体系的性质和行为,发现并建立化学体系中特殊规律的学科。尽管只有化学热力学、化学动力学和统计热力学三大部分组成,但与其他学科特别是自然学科联系紧密,相互渗透,其创造性与实用价值发挥了重要作用。作为是高等院校材料和化学学科的一门重要的专业基础课,本文介绍了近年来在物理化学教学过程中的一些体会。

关键词： 物理化学   少学时   互联网+   学生为中心  

摘要： 40学时的《物理化学》是内蒙古工业大学制药、材料和生物工程等专业的一门核心基础理论课程。以该校少学时《物理化学》呈现出"教师难教、学生难学"的教学现状为出发点,结合当前的"互联网+"背景,通过合理利用线上教学软件和课堂讲授相结合的教学方式,实现以"学生为中心"的教学模式,从而提高教学效果。

关键词： Hydrophobic drugs   Solubilization   Antioxidant assays   In vitro release   Dynamic light scattering  

摘要： In this work, we studied the solubilization capacity of the hydrophobic drugs Clozapine (CLZ) and Oxcarbazepine (OXC) in mixed micelles of low molecular weight pluronics (L64 and L35) and high molecular weight pluronics (P84, F127, F68 and P123) using UV-visible spectroscopy. The drug solubility, drug loading efficiency, the micelle-water partition coefficient (P), and Gibbs free energy (Delta G degrees) of solubilization were measured. From the obtained results, we concluded that the highest solubility of CLZ was observed in binary mixture of L64/P84 (1:4) due to the hydrophobic nature of these pluronics. In the case of OXC, the highest solubility was observed in L64/F127(1:4) because the drug solubilized both in the core and the corona region of F127 since OXC contains a carboxamide polar moiety. Fluorescence spectroscopy indicated that the critical micelle concentration (cmc) decreased with the formation of mixed micelles as compared to pure individual micelles. From DLS measurements, it was observed that there was an increase in size of mixed micelles from mixed micelles to drug (CLZ and OXC) loaded mixed micelles. In vitro release study of CLZ showed that as the amount of P84 in binary mixed micelles decreases, the release was faster. The formulations were also screened for antioxidant activity by four different methods. The antioxidant activity was significantly increased in the binary mixture of the pluronic solutions, indicated that pluronic formulations can be considered as an effective drug delivery candidate in the management of diseases that affect the central nervous system. (C) 2020 Elsevier B.V. All rights reserved.

关键词： In vitro gastrointestinal digestion   pH stability   Phenolics   Rice bran   Thermal stability  

摘要： The processing and digestive stability of ethanolic extracts from four Thai rice bran varieties, namely Khao Dawk Mali 105, Hom Nil, Kiaw Ngu, and Leum Pua, were assessed by applying different thermal and pH conditions, as well as in vitro gastrointestinal digestion models. High-performance liquid chromatography, Folin-Ciocalteu analysis, as well as 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity and ferric reducing antioxidant power (FRAP) assays were used to determine the chemical composition, total phenolic content (TPC), and antioxidant activity. Thermal treatment at 100 degrees C for 15 min induced the degradation of phenolic components and TPC, whereas the antioxidant activities measured by DPPH and FRAP assays remained stable after the heat treatment. Higher phenolic content and antioxidant activity values were observed in the extracts incubated at acidic pH levels of 3 and 5. After simulated digestion, all extracts exhibited the decrease of phenolic compounds and anthocyanin contents, as well as antioxidant activities.

关键词： 物理化学   教学能力   教学方式   提升  

摘要： 物理化学是化学学科的一个重要分支,也是化学学科的理论基础,学好该门课程的关键不仅在于学生,教师教学能力和教学技能的提升也起着决定性的作用。文章论述了作为教师如何通过自身教学能力的提升,丰富课堂内容。介绍了国内外教师对课堂组织形式和教师教学方式的区别。深入研究了教师在物理化学相关教材的解读、课堂组织形式的改革、教师的沟通与互动以及实验等方面提高教学能力的具体方式。为物理化学课程的教学和高校教学质量的提升,为学生创新能力的提高和高素质人才的培养奠定了基础。

关键词： Cationic polyurethane   Dielectric   Energy   Energy storage   Palm kernel oil   Polymer electrolyte  

摘要： Polyurethane (PU) having a great potential to be used as a polymeric host in polymer electrolytes. However, it still suffers from low conductivity and high glass transition temperatures (T-g). In this work, chain-extended palm-based cationic PU using polyethylene glycol (PEG) were synthesized at different composition by a poly-addition polymerization reaction. Infrared analysis proved the complete reaction of the limiting monomer by the disappearance of isocyanate peak. The glass transition temperature and crystallinity were decreased to 35 degrees C. The molecular weight increased by 22 % along with the composition of PEG. Thermal studies proved that all samples are thermally stable up to 190 degrees C. Further modification on PU structure by alkylation reaction enhanced overall conductivity of the polymeric host up to two orders of magnitude without the presence of charge carriers. These observations indicate this palm-based cationic PU possessed favourable properties and great potential as a polymeric host material for solid-state electrolytes application.