P-V图与热力学第一定律中的诸量

通过讨论热力学系统在准静态过程ΔE、A、Q诸量与P－V图中过程曲线之间的关系，可直接从P—V图上判断内能的增减、做功正负及热量交换的方向。     

大学自由教育的生成逻辑与实践路径探析

自由教育时常被冠以自由主义教育的标签,但其精神实质与当前我国倡导的“学生发展核心素养”教育异曲同工,应该得以澄清。自由教育在国家层面上与社会主义本质及核心价值观的全面发展一致,在社会层面上与科教强国的创新驱动一致,在个人层面上与人才培养的人文关怀一致。因此,高校应该把自由教育与人才培养相结合、把自由教育与创新教育相结合、把自由教育与个人成长相结合。     

氧自由基代谢中微量元素的作用机制

对铜锌超氧化物歧化酶、锰超氧化物歧化酶和铁超氧化物歧化酶等三种金属蛋白酶的活性结构及酶蛋白中金属离子催化氧自由基的机理进行了综述。     

我国艺术立法原则和研究要点思考

艺术法不是一部单行法规，而是相关法规的总称。由于艺术的外延很大，其所涉及的社会关系也是多种多样，而不仅仅是有关版权的问题，因此，有必要从宏观上把握艺术发生过程中所涉及的一些重要关系。     

关于变频调速的应用与节能分析

文章通过分析变频器调速的节能原理,并结合一个热电厂的变频器改造后的实例,阐述了变频调速的节能效果,提高了设备运行可靠性和节能降耗性。     

细胞膜Na+-K+主动输运过程的热力学分析

研究分析了Na^ -K^ 在跨膜主动输运过程中，细胞能量(由ATP分解提供)在各阶段的耗散情况．并且把ATP酶视为一个子系统，探讨了其在一个循环中发生的生物物理过程的规律性，对于深入了解细胞生命活动的内在机制提供了一种有益的研究方法。     

The influence of heterogeneous exposure and pre-deliberation queries on pretrial publicity effects

Prior research on pretrial publicity has produced mixed results and a roughly equal number of studies show an effect, show no effect, or show mixed results. We explored the effects of (a) homogenous vs. heterogeneous exposure (whether deliberating jurors were all exposed to the same publicity or not) and (b) pre-deliberation queries as potential contributors to mixed results. We found an effect for positive but not negative publicity on conviction rates but not evidence ratings. Exposure heterogeneity appears to explain these differences and pre-deliberation queries did appear to play some role in the obtained outcomes. Overall these findings do not replicate a robust publicity effect and future research should consider how homogeneous exposure and pre-deliberation opinion queries influence results.     

科研型数学教师及其培养

国际经济、科技、人才的竞争正推动着教育的改革。教育改革的关键因素在于合格的、新型教师的培养。科研型教师是指既能教学，又能进行数学及数学教育研究的教师。科研型教师应具备3项条件：转变观念，更新意识，提高能力。科研型数学教师是新时代数学教育的需要，要实行理论学习、实践探索和科学研究三位一体的教师培训途径。教养科研型教师需要解决“为何搞科研”、“如何搞科研”和“研究什么”3个问题。     

质点组内力的功改变质心动能的条件

讨论了质点组内力的功是可以改变质心动能的，以及所满足的条件．     

Neuromuscular and technical abilities related to age in water-polo players

Testing is one of the important tasks in any multi-step sport programme. In most ball games, coaches assess motor, physical and technical skills on a regular basis in early stages of talent identification in order to further athletes’ development. The purpose of the study was to investigate anthropometric variables and vertical jump heights as a free throw effectiveness predictor in water-polo players of different age groups. Two hundred and thirty-six young (10–18 years) male water-polo players partitioned into three age groups underwent anthropometric variables’ measures and squat- and countermovement-jump tests, and performed water-polo free throws. Anthropometric variables, vertical jump heights and throw speed – as a proxy for free throw effectiveness – resulted different over age groups. Particularly, throw speed changed from 9.28 to 13.70 m · s^?1 (+48%) from younger to older players. A multiple-regression model indicated that body height, squat-jump height and throw time together explain 52% of variance of throw speed. In conclusion, tall height, high lower limb power and throwing quickness appeared to be relevant determinants for effective free throws. Such indications can help coaches during talent identification and development processes, even by means of novel training strategies. Further research is needed over different maturity statuses.