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二茂铁的合成与应用研究
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作者 黄卫 栗洪道 《广东化工》 CAS 1999年第6期23-25,共3页
研究了乙醇钠法合成二茂铁的影响因素:不同原料、原料配比、温度、时间、反应体系的氛围等,在选定的较优条件下,三茂铁的产率达到81.3%,并对二茂铁在柴油中的助燃、消烟作用进行了初步考察。
关键词 二茂铁 乙醇钠法 助燃 消烟 合成 有机溶剂
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Intestinal preparation prior to capsule endoscopy administration 被引量:5
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作者 Vicente Pons Beltrán Cristina Carretero +2 位作者 Begoa Gonzalez-Suárez Iaqui Fernández-Urien Miguel Muoz-Navas 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第37期5773-5775,共3页
In order to have an adequate view of the whole small intestine during capsule endoscopy, the preparation recommended consists of a clear liquid diet and an overnight fast. However, visualization of the small bowel dur... In order to have an adequate view of the whole small intestine during capsule endoscopy, the preparation recommended consists of a clear liquid diet and an overnight fast. However, visualization of the small bowel during video capsule endoscopy can be impaired by intestinal contents. To improve mucosal visualization, some authors have evaluated different regimens of preparation. There is no consensus about the necessity of intestinal preparation for capsule endoscopy and it should be interesting to develop adequate guidelines to improve its efficacy and tolerability. Moreover, the effect of preparation type (purgative) on intestinal transit time is not clear. Since a bowel preparation cannot defini-tively improve its visibility (and theoretically the yield of the test), it is not routinely recommended. 展开更多
关键词 Capsule endoscopy Intestinal preparation Polyethylene glycol Aqueous sodium phosphate
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