海河流域省际河流省界断面水文监测的思考

省际河流省界断面水文监测是了解省际河流水量、水质变化规律的重要手段,是省际河流水资源分配的重要依据,是落实最严格水资源管理制度的重要支撑。介绍海河流域省际河流省界断面水文监测现状,分析海河流域省界水文监测存在的问题,并提出进一步完善省界水文监测站网,建立水文监测信息发布机制等相关建议,对于提高流域水文的社会化服务水平具有一定借鉴意义。     

交叉学科群中一门新型综合学科：包装学科

根据包装发展中的各项特征,论述了这些特征体现出交叉学科中综合学科的所有条件,并阐明建立起包装学科属于综合学科的观念将有利于开展包装企业技术创新和包装专业教育改革等项工作。     

CDMA网络中EVDO掉话原因分析

文章主要讨论了在CDMA网络中EVDO的掉话现象,并分析引起掉话的原因,通过对不同原因的分析及定位,找出对应的解决问题的方法,降低掉话率,提升网络质量。     

Determining the interlaminar tensile strength of a SiCf/SiC ceramic matrix composite through diametrical compression testing

Interlaminar tensile strength (ILTS) of a SiC_f/SiC Ceramic Matrix Composite (CMC) was determined through use of a diametrical compression test of disk geometries, with two geometries are investigated (Φ4.5 and Φ9 mm). Results are correlated with the fracture surface architecture, specifically relating to fibre tows. Due to the stochastic nature of ceramic material systems a Weibull distribution was implemented to understand the characteristic strength and distribution of the data sets for both disk geometries. Overall, a decrease in characteristic ILTS coupled with a narrowed distribution is observed for the Φ9 mm compared the Φ4.5 mm disk geometries due to the repeating unit cell size of the SiC_f/SiC CMC under investigation.