第11届全运会女子铅球项目前8名运动员关键运动技术参数三维录像分析

本文采用文献研究法、三维录像解析法和统计分析法对第11届全运会女子铅球决赛前八名运动员最好成绩投次进行关键运动技术研究,获取她们的部分关键运动学参数,同时和世界级优秀运动员的相应参数进行比较分析,得出相应的研究结果。本论文的主要研究结论为1.背向滑步转身跳投技术按整体动作结构可分为后摆、滑步、过渡、双支撑和最后出手投掷五个阶段。2本研究再次证明了出手速度与比赛成绩呈高度正相关,相关系数达到0.95。而出手角度和其他运动学参数与成绩呈中低度相关。3.本届全运会中冠军巩立娇6次试投平均成绩为19.60±0.46m;平均出手速度为13.47±0.24m/s,与世界级选手接近;平均出手角度为33.99±1.23°,低于世界级优秀运动员;平均出手高度为2.03±0.03m,距离抵制板的水平距离平均为-0.03±0.08m。4.前3名运动员李玲、李梅菊和巩立娇最好成绩投次质心最大分别为速度为2.84m/s、2.65m/s和2.91m/s,质心最大速度与成绩相关性不大。铅球的出手速度为12.69m/s,13.31m/s和13.84m/s,出手角度为38.5°、35.5°和33.9°,铅球的出手高度为2.09m、1.98m和2.06m。     

中外人造板甲醛释放限量标准对比

揭示甲醛的危害性及其在人造板中的来源,介绍世界主要国家和地区的甲醛释放量限定,提出了相应的改进建议。     

The cultural politics of national testing and test result release policy in South Korea: a critical discourse analysis

This paper examines the ideological construction of educational discourses embedded within the South Korean print media. Significantly, these discourses have recently promoted the resurrection of a sweeping national testing and test results release policy. Through careful examination of the “test plus release” policy, the authors show how the government has achieved hegemonic power by shaping public opinion through the national testing contexts. Drawing on a critical discourse analysis of educational policy texts from the government and top 10 print media sources, this paper analyses how discourses on “accountability”, “the right to know” and “the fairness of the tests” have been produced, reproduced and recontextualized to favour particular perspectives. The authors also examine how government and influential print media discourses interact with political and cultural factors such as “acclaiming the evaluative state”, “education fever” and “meritocratic beliefs” to achieve public consent for the new “test plus release” policy.     

黄芩苷缓释胶囊的研制

制备黄芩苷缓释胶囊,并通过体外释放度对其处方进行优化.以黄芩苷为原料药,羟丙甲纤维素(HPMC)、微晶纤维素(MCC)、乳糖、聚维酮(PVP)的乙醇溶液为辅料制备缓释胶囊,考察不同因素对释放度的影响,通过正交试验优化制备处方.优化后的黄芩苷缓释胶囊的处方为黄芩苷0.5 g,HPMC 0.25 g,MCC 0.2 g,PVP的乙醇溶液浓度为6%,乳糖0.25 g.研究方法简便、快速,体外释放度显示黄芩苷缓释胶囊处方设计比较合理,可进一步研发.     

中原文化内涵和精神融入旅游产业发展问题研究

中原文化旅游还停留在低层次的水平、文化的内涵挖掘还缺乏深度、文化的科技含量还比较低、文化的附加值也比较少。文化产业发展关键要找准市场契合点,基础是找到可物化为市场所需要的文化符号,与本地现有产业无缝对接,并且在对接过程中,让文化的张力得到充分显现。所以,中原旅游产品在开发中,要从旅游产品的层次体系出发,尽可能使传统文化时尚化,释放核心产品的文化内涵,提高形式产品的吸引力。     

新中国对日本战犯的改造和审判

中华人民共和国成立后，对曾在侵华战争期间千余名犯有严重战争罪行的在押日本战犯采取了以思想教育改造为重点，以消除基脑中根深蒂国的军国主义思想为核心的方针，实行正义与人道、惩处与宽大相结合的处置原则，达到了让他们认罪服罪的目的，妥善地处理了了全部在押的日本战犯问题。这批占犯归国后，都将余生献给了中日友好事业和国内和平与反战运动。新中国改造和审判日本战犯的成就，受到了国际舆论的高度评价。     

海底大地电磁探测仪器的投放与回收实验

将探测仪器投放到海底，并在数据采集完成后实施设备回收，是海洋地质勘探的关键技术之一。进行海底大地电磁探测在国内尚无前人经验。针对上述问题，经过实验研究，探索出一套较为实用可靠的技术方案。即采用索控脱钩和声学释放的方法，达到预期的科学目的。该技术方案已在海洋实验中获得成功。     

论高校新闻发言人制度的职能

高校是与公众关系密切的事业单位,满足公众的知情权、议论权和参与权是它的义务。高校实施新闻发言人制度要明确两个概念,即新闻发布、新闻发言人。实施高校新闻发言人制度要明确高校新闻发布的职能,即高校新闻发布的文明执政意义、依法治校意义和树立形象意义。     

铅球出手角度的生物力学分析

对铅球的投掷过程进行了生物力学分析，并通过对普通高校女生铅球出手角度的实验，确定出其最佳出手角度的分布范围及特点，旨在为铅球投掷教学和投掷理论提供参考依据和改进方向。     

Efficient interlayer charge release for high-performance layered thermoelectrics

Many layered superlattice materials intrinsically possess large Seebeck coefficient and low lattice thermal conductivity, but poor electrical conductivity because of the interlayer transport barrier for charges, which has become a stumbling block for achieving high thermoelectric performance. Herein, taking BiCuSeO superlattice as an example, it is demonstrated that efficient interlayer charge release can increase carrier concentration, thereby activating multiple Fermi pockets through Bi/Cu dual vacancies and Pb codoping. Experimental results reveal that the extrinsic charges, which are introduced by Pb and initially trapped in the charge-reservoir [Bi₂O₂]²⁺ sublayers, are effectively released into [Cu₂Se₂]²⁻ sublayers via the channels bridged by Bi/Cu dual vacancies. This efficient interlayer charge release endows dual-vacancy- and Pb-codoped BiCuSeO with increased carrier concentration and electrical conductivity. Moreover, with increasing carrier concentration, the Fermi level is pushed down, activating multiple converged valence bands, which helps to maintain a relatively high Seebeck coefficient and yield an enhanced power factor. As a result, a high ZT value of ∼1.4 is achieved at 823 K in codoped Bi_0.90Pb_0.06Cu_0.96SeO, which is superior to that of pristine BiCuSeO and solely doped samples. The present findings provide prospective insights into the exploration of high-performance thermoelectric materials and the underlying transport physics.