高校图书馆人才流失原因及对策

从高校图书馆人才流失的现状出发,分析了高校图书馆人才流失的外部、内部、个人等三方面的原因,提出解决高校图书馆人才流失问题的对策,最后指出了引进人才时应严把入口关、注重馆内人才的合理使用、防止人才“高消费”、建立人才预警机制等问题。     

对中学化学教育科研的思考

分析了中学化学教师科研工作现状,从微观层面阐述了中学化学教育科研的意义,提出了中学化学教育科研的内容、研究方法以及研究策略.     

突破教师职业发展高原期的思考与策略

联合国教科文组织曾做过一个调查,研究教师的教育经验和教育效果之间有什么联系。结果发现, 在刚走上工作岗位的五年之内,教龄与教学效果是成正比的,曲线呈上升趋势;第五年至第八年,普遍出现一个平稳的发展趋势八年以后,教师群体逐渐出现分化,小部分人通过再学习、再创造,教学水平得到升华,教学效果出现第二个上升期,逐步发展成     

公共健康视角下的电子竞技发展趋势研究

电子竞技(E-sports)已经成为当代发展最快,且最重要的文化现象之一。国家体育总局于2003年将它列为第99个运动项目,又在2011年再次将电子竞技改为正式比赛项目。电子竞技从运动员、观众和经济价值而言,是一个不断发展的产业,而且它将被列入2024年巴黎奥运会。虽然最初主要是年轻男性对电子竞技感兴趣,但电子竞技有可能在更广泛的用户群体中带来健康行为的改变。本文运用文献资料法,对比分析法和逻辑分析法探讨电子竞技在整个生命周期内影响健康行为以及一些主要困境的解决措施。除此之外,电子竞技将有可能帮助于个人改变其体育活动和健康行为。最后考虑到电子竞技的指数增长,对于学者和政策制定者来说,认识到电子竞技带来的机遇是非常重要的。     

形成性评估应用于大学英语听力教学的绩效研究

实验研究得知,相较于终结性评估,形成性评估应用于大学英语听力教学不仅能够更为有效地激发和提高学生的学习动力,而且更能有效地提升听力学习绩效;形成性评估更能激发学生的听力学习自主性和合作性,提高其听力自主学习能力和合作学习能力.形成性评估能促使教师转变教学方式,改进听力教学,对提高教学质量和教学绩效有一定的意义.     

论高校图书馆特藏方向之遴选与确定

发展特色馆藏要解决的首要问题是如何科学合理地确定特藏方向.高校图书馆应当通过广泛调研和论证,再有意识地依据有关原则,对各种因素进行详尽的比对分析、综合评价和选择取舍的基础上,确定本馆的特藏发展方向.参考文献5.     

Mineralogy of the deep lower mantle in the presence of H2O

Understanding the mineralogy of the Earth''s interior is a prerequisite for unravelling the evolution and dynamics of our planet. Here, we conducted high pressure-temperature experiments mimicking the conditions of the deep lower mantle (DLM, 1800–2890 km in depth) and observed surprising mineralogical transformations in the presence of water. Ferropericlase, (Mg, Fe)O, which is the most abundant oxide mineral in Earth, reacts with H₂O to form a previously unknown (Mg, Fe)O₂H_x (x ≤ 1) phase. The (Mg, Fe)O₂H_x has a pyrite structure and it coexists with the dominant silicate phases, bridgmanite and post-perovskite. Depending on Mg content and geotherm temperatures, the transformation may occur at 1800 km for (Mg_0.6Fe_0.4)O or beyond 2300 km for (Mg_0.7Fe_0.3)O. The (Mg, Fe)O₂H_x is an oxygen excess phase that stores an excessive amount of oxygen beyond the charge balance of maximum cation valences (Mg²⁺, Fe³⁺ and H⁺). This important phase has a number of far-reaching implications including extreme redox inhomogeneity, deep-oxygen reservoirs in the DLM and an internal source for modulating oxygen in the atmosphere.     

英语语言学中隐喻的种类及其生成原因

从认知语言学的角度看,隐喻可分为方位隐喻、本体论隐喻和结构隐喻等类型。不同的隐喻,其生成原因各不相同。     

Molecular hydrogen is a promising therapeutic agent for pulmonary disease

Molecular hydrogen exerts biological effects on nearly all organs. It has anti-oxidative, anti-inflammatory, and anti-aging effects and contributes to the regulation of autophagy and cell death. As the primary organ for gas exchange, the lungs are constantly exposed to various harmful environmental irritants. Short- or long-term exposure to these harmful substances often results in lung injury, causing respiratory and lung diseases. Acute and chronic respiratory diseases have high rates of morbidity and mortality and have become a major public health concern worldwide. For example, coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has become a global pandemic. An increasing number of studies have revealed that hydrogen may protect the lungs from diverse diseases, including acute lung injury, chronic obstructive pulmonary disease, asthma, lung cancer, pulmonary arterial hypertension, and pulmonary fibrosis. In this review, we highlight the multiple functions of hydrogen and the mechanisms underlying its protective effects in various lung diseases, with a focus on its roles in disease pathogenesis and clinical significance.     

Letter Paper Design of China

Letter paper design in woodblock print is a unique art of ancient China. It evolved into a distinct and elegant art form during the Ming and Qing dynasties when many famous artists and writers ordered letter paper specially designed for themselves. Some was even decorated with special water prints and secret marks. In ancient China, letter paper was not simply used for the purpose of writing but imbued with cultural richness.