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LA-(MC)-ICPMS 和(Nano)SIMS 硫化物微量元素和硫同位素原位分析与矿床形成的精细过程 被引量:63
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作者 范宏瑞 李兴辉 +4 位作者 左亚彬 陈蕾 刘尚 胡芳芳 冯凯 《岩石学报》 SCIE EI CAS CSCD 北大核心 2018年第12期3479-3496,共18页
硫化物微区原位分析技术包括LA-ICPMS定点微量元素分析、LA-ICPMS和(Nano) SIMS微量元素面扫描分析,以及SIMS、Nano SIMS和LA-MC-ICPMS原位硫同位素点分析和面扫描。这些分析方法可以有效地获取不同期次硫化物微量元素含量、丰度分布图... 硫化物微区原位分析技术包括LA-ICPMS定点微量元素分析、LA-ICPMS和(Nano) SIMS微量元素面扫描分析,以及SIMS、Nano SIMS和LA-MC-ICPMS原位硫同位素点分析和面扫描。这些分析方法可以有效地获取不同期次硫化物微量元素含量、丰度分布图像、硫同位素比值和分布特征,结合微区时间分辨信号谱图、微量元素相关性分析等,在矿床学的成矿元素行为与赋存状态、成矿元素置换反应、成矿流体与硫的来源、矿石矿物的化学分带性、矿床成因模型等研究中有着重要的应用前景,以探讨矿床的精细成矿过程。硫化物原位微量元素和同位素LA-(MC)-ICPMS和(Nano) SIMS分析,需要降低仪器和分析方法的系统误差,克服严重的基体效应和同位素分馏效应。 展开更多
关键词 LA-(MC)-ICPMS (Nano)SIMS 微量元素 硫同位素 硫化物 成矿过程 金属矿床
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Value of General Anesthesia Compound Epidural Anesthesia in Uterine Fibroids Surgery
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作者 WANGHedong ZHANGXiaoli +1 位作者 CHENLin liushang 《外文科技期刊数据库(文摘版)医药卫生》 2022年第3期198-201,共4页
Objective: to explore the clinical significance of general anesthesia combined with epidural anesthesia in the treatment of hysteromyoma. Methods: 100 patients who underwent hysteromyomectomy in our hospital from Janu... Objective: to explore the clinical significance of general anesthesia combined with epidural anesthesia in the treatment of hysteromyoma. Methods: 100 patients who underwent hysteromyomectomy in our hospital from January 2019 to December 2020 were randomly allocated, 50 patients in each group. The general anesthesia group was all under general anesthesia, while the compound anesthesia group was under general anesthesia combined with epidural anesthesia. The vital signs of the two groups before tracheal intubation, immediately after tracheal intubation, at the time of skin incision, at the end of surgery and at the time of tracheal extubation were compared, and the incidence of postoperative complications was compared. Results: there was no significant difference in vital signs immediately before tracheal intubation between compound anesthesia group and general anesthesia group (P > 0.05). The vital signs of the compound anesthesia group were lower than those of the general anesthesia group immediately after tracheal intubation, at the time of skin incision, at the end of operation and at the time of tracheal extubation (P < 0.05). The incidence of postoperative complications in compound anesthesia group was lower than that in general anesthesia group (P < 0.05). Conclusion: compared with total anesthesia, general anesthesia combined with epidural anesthesia is effective in hysteromyoma surgery, which can effectively maintain good anesthetic effect and reduce the occurrence of complications. It is worthy of promotion and application. 展开更多
关键词 general anesthesia compound epidural anesthesia uterine fibroids surgery VALUE
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