工科院校无机化学课程教学方法初步探索     

刘媛媛  李国祥  杜金花 《中国教育技术装备》2011,(30):48+53

基于工科院校无机化学的教学现状,提出在课堂教学中转变教学理念,加强四大化学之间的联系,精选教学内容,优化教学方法,在教学过程中取得良好的教学效果,使学生对无机化学学科的掌握能力大大加强。  相似文献   

CSSD护士的职业危害与防护对策相关性研究     

都模勤  王可琼  王伟迪 《科教文汇》2020,(6):90-91,94

医院消毒供应中心(CSSD)是集中全院污染的医疗用品及敷料的部门。长期与致病源、锐器、噪音、化学消毒液、高温、电器辐射、潮湿等因素接触,对CSSD员工的健康和安全产生了威胁。本文分析了CSSD的职业危害因素,并提出职业防护对策,以期提高自我防护水平,减少危害,避免发生医疗不良事件,促进CSSD护理人员的职业健康。  相似文献   

新课改环境中的小学语文阅读教学优化技巧     

杜红梅 《科教文汇》2020,(7):133-134

为了培养出能够引领社会发展的前沿性人才,我国在教育领域实施了深入的改革,希望通过教育改革为科技腾飞奠定扎实的人才基础。小学阶段养成的习惯会伴随着人的一生,小学阶段形成良好的人文素养,能为小学生品格的塑造和未来的发展奠定良好的基础。因此,对小学语文进行教育改革是时代的选择。阅读是小学语文教育的重中之重,为了确保达到教学目标,语文教师必须突破原有的教育瓶颈。  相似文献   

Diagnosis of CO2 dynamics and fluxes in global coastal oceans     

Zhimian Cao  Wei Yang  Yangyang Zhao  Xianghui Guo  Zhiqiang Yin  Chuanjun Du  Huade Zhao  Minhan Dai 《国家科学评论(英文版)》2020,7(4):786

Global coastal oceans as a whole represent an important carbon sink but, due to high spatial–temporal variability, a mechanistic conceptualization of the coastal carbon cycle is still under development, hindering the modelling and inclusion of coastal carbon in Earth System Models. Although temperature is considered an important control of sea surface pCO₂, we show that the latitudinal distribution of global coastal surface pCO₂ does not match that of temperature, and its inter-seasonal changes are substantially regulated by non-thermal factors such as water mass mixing and net primary production. These processes operate in both ocean-dominated and river-dominated margins, with carbon and nutrients sourced from the open ocean and land, respectively. These can be conceptualized by a semi-analytical framework that assesses the consumption of dissolved inorganic carbon relative to nutrients, to determine how a coastal system is a CO₂ source or sink. The framework also finds utility in accounting for additional nutrients in organic forms and testing hypotheses such as using Redfield stoichiometry, and is therefore an essential step toward comprehensively understanding and modelling the role of the coastal ocean in the global carbon cycle.  相似文献   

A stage-specific cell-manipulation platform for inducing endothelialization on demand     

Qilong Zhao  Juan Wang  Yunlong Wang  Huanqing Cui  Xuemin Du 《国家科学评论(英文版)》2020,7(3):629

Endothelialization is of great significance for vascular remodeling, as well as for the success of implanted vascular grafts/stents in cardiovascular disease treatment. However, desirable endothelialization on synthetic biomaterials remains greatly challenging owing to extreme difficulty in offering dynamic guidance on endothelial cell (EC) functions resembling the native extracellular matrix-mediated effects. Here, we demonstrate a bilayer platform with near-infrared-triggered transformable topographies, which can alter the geometries and functions of human ECs by tunable topographical cues in a remote-controlled manner, yet cause no damage to the cell viability. The migration and the adhesion/spreading of human ECs are respectively promoted by the temporary anisotropic and permanent isotropic topographies of the platform in turn, which appropriately meet the requirements of stage-specific EC manipulation for endothelialization. In addition to the potential of promoting the development of a new generation of vascular grafts/stents enabling rapid endothelialization, this stage-specific cell-manipulation platform also holds promise in various biomedical fields, since the needs for stepwise control over different cell functions are common in wound healing and various tissue-regeneration processes.  相似文献   

图书馆信息咨询服务比较研究及发展对策   总被引：5，自引：0，他引：5  

杜涛 《河南图书馆学刊》2006,26(6):24-25

图书馆信息咨询在当前呈现新的趋势,服务范围、内容、方式得以不断的拓宽、深化和改善。通过对中外信息咨询服务进行对比,找出差距,提出完善我国信息咨询服务的策略。  相似文献   

“工匠精神”融入高职院校德育工作路径研究     

杜石清 《包头职业技术学院学报》2020,(1):28-29,62

从“工匠精神”的特质出发,分析了当前“工匠精神”融入高职院校德育工作的必要性,提出了“工匠精神”融入高职院校德育工作的路径。  相似文献   

Recent Advances in Constructing Interfacial Active Catalysts Based on Layered Double Hydroxides and Their Catalytic Mechanisms     

Haoxuan Du  Jiaxuan Fan  Chenglin Miao  Mingyu Gao  Yanan Liu  Dianqing Li  Junting Feng 《天津大学学报(英文版)》2021,(1):24-41

The interaction between the metal and the support of supported metal catalysts, which are widely used in industry, is the primary focus of the study of such cat...  相似文献   

阐释《古籍修复技术规范与质量要求》   总被引：3，自引：0，他引：3  

杜伟生 《国家图书馆学刊》2006,(3):19-25

《古籍修复技术规范与质量要求》是为了规范即将在全国图书馆开展的大规模古籍修复工作而制定的一个推荐性标准,内容涉及到古籍修复工作的各个方面.本文就标准的使用范围、结构、部分名词术语、质量工作标准以及在标准中反映的修复理念、技术等方面作了简要的说明.  相似文献   

“双减”背景下科技馆的馆校结合新发展——基于内容分析法研究          下载免费PDF全文

孙旭捷  杜媛  杨万坤 《自然科学博物馆研究》2023,(2):42-52

“双减”时代的到来,为馆校结合带来了新的机遇与挑战,馆校结合也成为“双减”政策有效的实施手段。科技馆如何在“双减”背景下运用创新性方法开展馆校结合工作?本研究提取文件《关于利用科普资源助推“双减”工作的通知》的关键词作为调查重点,通过选取不同地区12座科技馆(或全国科普教育基地)作为研究样本,采用内容分析法,对其在“双减”期间开展的馆校结合活动案例及数据进行分析,从而呈现“双减”政策支持下的馆校结合新发展现状;从中发现馆校结合还存在各地区研学活动研发水平差异较大、馆校结合课后服务有所欠缺、馆校之间缺乏人才交流等问题,并针对以上问题逐一进行对策研究。  相似文献