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化学实验是化学教学过程中的重要环节,能帮助学生学好化学知识并形成良好的化学思维习惯,但实验过程中产生的污染物对环境带来了危害,我们根据绿色化学的理念,在化学实验教学中进行绿色化学教育的探索与实践,取得了良好的教学效果,有助于培养学生分析问题、解决问题能力,培养学生的创新意识和环保意识。 相似文献
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建立良好师生关系 增强化学学习动机 总被引:1,自引:0,他引:1
本文通过对建立良好师生关系有利于增强学习动机观点的分析。从建立良好师生关系,培养交往动机以增强学习动机;建立良好师生关系;将近景性动机转化为远景性动机以增强学习动机等方面,研究了在化学教学中增强学生学习动机的方法,说明了建立良好师生关系有利于增强学生化学学习动机,是教学中不可缺少的必要环节。 相似文献
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培养学生的创新素质是社会进步和国家发展.教育自身发展和促进人的个性发展的需要。本文介绍了化学新课程中的创新素质及微型化学实验的涵义、笔者通过对在化学实验教学中培养学生刨新素质的可行性分析,提出了在化学实验教学中培养学生的创新素质的策略。 相似文献
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目前绿色化学教育研究在国内外有诸多开展,教学议题围绕着实验教学中"实验开展"和"行为培养"有诸多展开。本文围绕着绿色化学的内涵,阐述了绿色化学在高等教育阶段的重要性,并结合教学实践提出了高等教育阶段开展绿色化学实验的措施,以期学生通过系统的绿色化学行为培养,形成良好的绿色化学习惯。 相似文献
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元素化学是基础化学原理教学的重点与难点。结合多年的教学实践,主要从以下几个方面进行了元素化学的教学改革与探索:重视化学基本原理的指导作用,培养了学生利用理论知识解决实际问题的能力;有目的地引入与元素相关的生活中的实例和最新的科研成果,激发学生的学习兴趣和科研兴趣;整合各种教学资源,进行混合式学习模式的改革,提高学生自主学习的能力。以上改革实践有效提高了元素化学的教学效果。 相似文献
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简要回顾了日本绿色和可持续发展化学奖的设立背景和历届获奖情况,着重评述了第4届5个获奖项目:经济产业省授予奖、文部科学省授予奖、环境省授予奖、绿色和可持续发展化学网直接授予奖和学生旅费补助奖的成果及其意义。 相似文献
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为了适应高等教育的发展要求,论文探讨和研究了新的分析化学理论教学和实验教学教学模式,以提高学生的对理论知识的掌握,培养学生的实验能力、创新能力和综合素质。 相似文献
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近年来,随着教学改革的推进,对于初中化学课堂教学提出了更高的要求。研究分析了影响初中化学课堂教学有效性的因素,提出了初中化学课堂教学有效性的实施策略。主要有优化教学设计;灵活运用教学方法;提高学生课堂参与度;增加教师自身能力等四个方面。 相似文献
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针对浇口位置及数量对于注塑模塑料制品设计中的重要性,运用Moldflow软件对不同浇口位置及浇口数量的熔接痕、流动前沿处温度、翘曲分析进行分析比较,确定浇口位置的优化分案,提高模具的设计效率。 相似文献
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In a recent work, we have described an original family of poly(urethaneimides) containing tertiary amine groups from a polytetramethylene oxide diol (PTMO1000), N-methyldiethanolamine (MDEA), 4,4′-methylene-bis-phenylisocyanate (MDI) and 4,4′-hexafluoroisopropylidene-bis-phthalic anhydride (6FDA). This paper reports their quaternization with various alkylating agents to give the cationic quaternary ammonium groups. An optimization of the experimental conditions led to three new families of PUI cationomers with a good structural control and high quaternization degrees. These polymers differed in the number of their cationic groups (0 < x ≤ 0.7 equiv.), the type of their counter-ions X− (methyl sulfate, tosylate, triflate, chloride, bromide, iodide) and their steric hindrance by the length of their n-alkyl side chain (C1-C6). Complementary NMR techniques, including HSQC and COSY two-dimensional NMR, enabled to characterize the control of the polymer structure and to determine quantitatively the quaternization degree of the PUI cationomers. Properties in solution (solubility and viscosity) and in the solid state (film-forming ability and density) were then examined in relation with the membrane separation application targeted for these new PUI cationomers. 相似文献
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Peter Strazewski 《Israel journal of chemistry》2015,55(8):851-864
“What I cannot create, I do not understand.” Richard Feynman’s bon mot seems almost tailored for experimental systems chemists to realise an important step in the chemical sciences: the creation of living synthetic cells from the entirely inanimate. The underlying idea needs to be simple so the system can develop naturally. This proposal aims at the realisation, viz. finding sets of experimentally feasible initial conditions, exploring varied compositions and analysing their outcomes, of a fully synthetic chemical micro-compartmented and evolvable macromolecular system being fed with monomers and small molecular weight, high energy compounds, to keep the system permanently out of thermodynamic equilibrium and let it self-evolve, thus gaining: 1) import-export control of macromolecules across the compartment membranes; 2) food-dependent increase in macromolecular size, i.e., polymer length inside the compartments; 3) sustained production of new macromolecules through the establishment of a (or several) de novo genetic code(s); leading to 4) the emergence of replicating macromolecular populations; and 5) the emergence of self-evolved synthetic living cells. 相似文献
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对于企业档案数字化建设首先要有一个正确的认识 ;其次 ,必须明确搞好企业档案数字化建设需要一个过程 ,需要有计划、有步骤地逐步推进 ;第三 ,搞好企业档案数字化建设必须提高管理人员的素质 ;第四 ,搞好档案数字化建设必须保证计算机系统及其配套设备的安全运行 相似文献
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有机硅改性的涂料印花粘合剂的研制 总被引:6,自引:0,他引:6
通过有机硅对丙烯酸酯进行改性 ,合成了一种性能优良的涂料印花粘合剂 ,并对丙烯酸酯单体的选择及配比、有机硅单体的选择及用量、反应性单体的选择与用量、乳化剂的配比及用量进行了研究。 相似文献
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根据生产多孔细旦纤维的工艺条件进行设备改造,如侧吹风的改造、喷丝板的优化等,使普通生产线能生产出优质的差别化纤维。 相似文献
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Dr. Alberto Ongaro Dr. Giovanni Desiderati Dr. Erika Oselladore Dr. Davide Auricchio Prof. Maurizio Memo Dr. Giovanni Ribaudo Prof. Claudia Sissi Prof. Alessandra Gianoncelli 《ChemMedChem》2022,17(5):e202100665
Guanine-rich sequences are known to fold into G-quadruplex (G4) arrangements, which are present in oncogenes and in the telomeric regions of chromosomes. In particular, G4s represent an obstacle to functioning of telomerase, an enzyme overexpressed in cancer cells causing their immortalization. Therefore, G4 stabilization using small molecules represents an appealing strategy for the medicinal chemist. Ligands based on an anthraquinone scaffold, to which peptidic side chains were attached by an amide bond, were previously reported. We envisioned improving this ligand concept leveraging the click chemistry approach, which, besides representing a flexible, high yielding synthetic strategy, allows an elongation of the side chains and an increase of π–π stacking and H-bond interactions with the nucleobases through the triazole ring. Compounds were tested for their ability to interact with G4 DNA with a multiple analytical approach, demonstrating an elevated aptitude to stabilize the G4 and high selectivity over double stranded DNA. 相似文献