区域性防治煤与瓦斯突出研究

在煤矿生产中,随着开采深度的增加,煤层的瓦斯含量、瓦斯压力都呈上升趋势,发生煤与瓦斯突出的危险性加大,给煤矿安全生产带来很大威胁.论文以中平能化集团天安五矿地质条件为例,通过瓦斯敏感指标临界值跟踪考察及结果分析,得出瓦斯敏感指标临界值,为区域验证及局部防突提供了理论基础,并应用于工程实践,实现了快速安全掘进.     

古代诗歌本体论之三种命题

＂诗言志＂、＂诗缘情＂和＂诗达义＂三个理论命题构成了古代诗歌本体论的体系框架。古代既有＂言志＂之诗,又有＂缘情＂之诗,而＂言志＂诗和＂缘情＂诗又都包蕴着思想意义,＂志＂、＂情＂、＂义＂是构成古代诗歌本体的三个基本要素。这三个命题显示了古代诗歌本体论的多元化特点,共同诠释了古代诗歌的本质属性,建构了古代诗歌本体论的理论体系。     

汇文Libsys5.5和ILASⅡ馆藏统计功能对比分析--以河北工程大学图书馆实践为例

介绍了ILASⅡ和汇文Libsys5.5的馆藏统计功能设置,阐述了汇文Libsys5.5和ILASⅡ馆藏统计功能的应用,提出了ILASⅡ向汇文Libsys5.5转换时应注意的问题。     

高校图书馆大规模馆藏精准迁移模式探讨--以华北电力大学图书馆为例

书库藏书迁移的运作主要在于精心准备和周密筹划。详细介绍了华北电力大学图书馆利用汇文文献信息服务系统的强大分析功能并结合Excel软件的使用技巧,实现大规模馆藏迁移精准排架工作的经验。     

杨氏模量实验的优化研究

针对传统杨氏模量测量存在的一些问题进行深入分析,进而对传统杨氏模量测量仪进行改进,最后提出了减少实验误差、简化数据处理的建议.     

2009年亚锦赛决赛中国女排失利的因素分析

通过查阅国内期刊库和及观看比赛回放等途径,从非技术因素和技术因素方面对2009年亚州女子排球锦标赛中国女排和泰国女排比赛失利进行分析.结果表明：中国女排失利的原因主要有心理状态不佳、伤病因素、教练因素及发球拦网一传等技术环节的失误.通过进行全方位的分析为中国女排再创辉煌提供理论上的参考.     

密立根油滴实验中油滴选取探讨

在密立根油滴法测量电子电量实验中,油滴的选取是影响实验结果的一个重要因素,通过油滴的下落时间和平衡电压的等电荷数的多重曲线,以及实验操作误差的分析,探讨了密立根油滴实验油滴选取的原则,从而为正确选取油滴提供了理论依据。     

Sea surface temperature records of core ZY2 from the central mud area in the South Yellow Sea during last 6200 years and related effect of the Yellow Sea Warm Current

Sea surface temperature (SST) records in the South Yellow Sea during the last 6200 years are reconstructed by the unsaturation index of long-chain alkenones (K 37 U ’) in sediment core ZY2 from the central mud area.The SST records varied between 14.1 and 16.5°C (15.6°C on average),with 3 phases:(1) A high SST phase at 6.2-5.9 cal ka BP;(2) A low and intensely fluctuating SST phase at 5.9-2.3 cal ka BP;and (3) A high and stable SST phase since 2.3 cal ka BP.Variation of the SST records is similar to intensity of the Kuroshio Current (KC),and corresponds well in time to global cold climate events.However,the amplitude of the SST response to cooling events was significantly different in different phases.The SST response to global cooling event was weak while the KC was strong;and the SST response was strong while the KC was weak.The difference in amplitude of the SST response is possibly caused by the modulation effect of the Yellow Sea Warm Current which acts as a shelf branch of the KC and a compensating current induced by the East Asia winter monsoon.The warm waters brought by the Yellow Sea Warm Current cushion the SST decrease induced by climate cooling,and both the Kuroshio and East Asian winter monsoon play important roles in the modulation mechanism.The SST records display a periodicity of 1482 years.The same period was found in the KC records,indicating that variation of the SST records in the central South Yellow Sea is strongly affected by KC intensity.The same period was also found in Greenland ice cores and North Atlantic and Arabian Sea sediment cores,showing a regional response of marine environmental variability in the East China Seas to that in the global oceans.