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再论消雷机理与高效全功能消雷装置 被引量:1
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作者 钱若泉 《华北电力技术》 CAS 北大核心 1997年第6期5-9,26,共6页
消雷器的安装能改善消雷器附近空间局部范围内雷云的地面平均电场强度,先导首端中和论及空间电荷屏蔽论是消雷机理的依据,文章以消雷装置18年来工程应用效果进行论证,进而介绍了高效全功能消雷装置的组成,并论述了有关问题。
关键词 功能装置 机理
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《关于立即停止使用“消雷器”的建议书》
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作者 马宏达 王厚余 《劳动安全与健康》 1997年第3期27-29,共3页
关键词 消雷功能 停止使用
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多针系统与避雷针有无本质差别的正确判据
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作者 罗卓林 《高电压技术》 EI CAS CSCD 北大核心 1997年第4期45-47,共3页
在明确多针系统与避雷针没有本质差别含义的基础上,本文根据现行标准和数理统计原理,提出判断多针系统与避雷针有无本质差别的方法,并结合实例说明多针系统与避雷针在防雷功能上没有本质差别。
关键词 功能 消雷功能 检验标准 多针系统
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Tongue-like Barrett's esophagus is associated with gastroesophageal reflux disease
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作者 Hatsushi Yamagishi Tomoyuki Koike +10 位作者 Shuichi Ohara Shigeyuki Kobayashi Ken Ariizumi Yasuhiko Abe Katsunori Iijima Akira Imatani Yoshifumi Inomata Katsuaki Kato Daisuke Shibuya Shigemitsu Aida Tooru Shimosegawa 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第26期4196-4203,共8页
AIM:To test this hypothesis of barrett esophagus (BE) classified into two types and to further determine if there was any correlation between the shape of endoscopically suspected esophageal metaplasia (ESEM), prevale... AIM:To test this hypothesis of barrett esophagus (BE) classified into two types and to further determine if there was any correlation between the shape of endoscopically suspected esophageal metaplasia (ESEM), prevalence of reflux esophagitis (RE) and heartburn. METHODS: A total of 6504 Japanese who underwent endoscopy for their annual stomach check-up were enrolled in this study. BE was detected without histological confirmation that is ESEM. We originally classified cases of ESEM into 3 types based on its shape: Tongue-like (T type), Dome-like (D type) and Wave-like (W type) ESEM. The respective subjects were prospectively asked to complete questionnaires concerning the symptoms of heartburn, dysphagia, and abdominal pain for a one-month period. RESULTS: ESEM was observed in 10.3% of 6504 subjects (ESEM < 1 cm, 9.4%; 1 cm ≤ ESEM < 3 cm, 1.7%; ESEM ≥ 3 cm, 0.5%). The frequency of ESEM was significantly higher in males compared with female subjects. Statistical analysis showed that the prevalence of heartburn and RE were significantly higher in the T type ESEM than in the W type ESEM (P < 0.05). CONCLUSION: The T type ESEM was strongly associated with reflux symptoms and RE whereas the W type ESEM was not associated with GERD. 展开更多
关键词 Tongue-like endoscopically suspectedesophageal metaplasia Dome-like endoscopicallysuspected esophageal metaplasia Wave-likeendoscopically suspected esophageal metaplasia Gastroesophageal reflux disease
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