工科院校无机化学课程教学方法初步探索

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。     

CSSD护士的职业危害与防护对策相关性研究

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。     

新课改环境中的小学语文阅读教学优化技巧

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。     

关于离散数学课程教学建设的探索

离散数学是现代数学中研究离散的量的内部结构和相互关系的一门学科,在计算机科学与技术的发展中有非常广泛的应用。本文的研究主要是结合离散数学课程的教学经验,对离散数学这门课的教学现状及课程相关建设进行了研究,分析了当前离散数学教学中存在的问题,对离散数学课程的教学提出了新要求、新目标和新内容,从而给出了离散数学课程的教学改革思路和建议。     

影子价格在产品计划中的应用和解法

在生产和经营等管理工作中,需要经常进行计划或规划。线性规划中的影子价格是在一定的资源情况下,合理利用资源从而达到实现最大利润时对资源的估价。本文将以经济分析问题中的最基础也最常见的产品计划问题为例,着重讨论线性规划求解的影子价格在其中的运用和解法,并且比较两种不同软件解答的优劣。     

Diagnosis of CO2 dynamics and fluxes in global coastal oceans

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.     

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

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.     

我国优秀女子双打比赛前三拍技术特征分析——以2021年十四运会女双决赛为例

羽毛球前三拍技术决定着双打比赛的走向,影响运动员在比赛伊始的主被动关系,本研究对我国优秀羽毛球女子双打运动员在中华人民共和国第十四届运动会(以下简称十四运会)女双决赛中前三拍技术应用进行分析。对陈清晨、贾一凡(以下简称凡晨组合)、杜玥、李茵晖(以下简称李杜组合)在十四运会女双决赛中的比赛录像进行观察统计,以比赛中发球的落点、得失分;接发球的落点、技术应用次数以及得失分;第三拍回球落点、技术运用及得失分情况进行统计分析,以期为基层梯队中女子双打、男子双打乃至混合双打的训练提供参考依据。结果发现:我国优秀女双运动员发球落点集中在1区和5区,发球技术较稳定;接发球运用最多的技术为推球和扑球;第三拍技术在两对运动员之间存在差异,且均有失分情况出现。     

网络环境下信息资源建设体系构想

网络环境下信息资源的共建共享,是21世纪全球图书馆共同的奋斗目标.着重讨论在网络环境下图书馆信息资源建设的必要性、如何构建网络环境下信息资源共建共享体系和文献信息资源共享模式等几个问题.进一步论述实施信息资源共建共享所必须建立的保障系统,以及加强信息资源建设的几点措施.     

晋东南成汤崇拜的巫觋文化意蕴考论

晋东南古上党地区的成汤崇拜是现代社会里原始遗风犹存的特殊民俗文化,其表现形态是神庙群落众多,扩布范围广泛,以阳城析城山为核心形成了一个"成汤祭祀文化圈",包含着深厚的巫觋文化意蕴.这些丰富的原始文化意蕴是以男权为主导的农耕文化的产物,其渊源却是对殷商先祖——母系氏族社会习俗的承续.本项研究结合田野调查资料,以"成汤祷雨"为论述中心,探讨成汤崇拜形成的深层原因及其丰富样态.我们认为研究成汤崇拜不应以现代国家行政区域划分的概念去诠释,而应以历史地理观念,把它置放到其产生形成的文化生态环境中去解读,方可接近其发生发展的真实状态.