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乙丙橡胶的合成及其发展现状 被引量:8
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作者 徐宏彬 马达锋 +5 位作者 梅利 肖智贤 杨柳 姚臻 笪文忠 曹堃 《化工学报》 EI CAS CSCD 北大核心 2018年第11期4614-4624,共11页
乙丙橡胶因其结构可控、主链饱和、耐老化好等优异性能,广泛应用于汽车配件、电线电缆、建筑材料、耐热胶管、密封构件等相关领域。从催化体系和聚合工艺两方面系统介绍了合成乙丙橡胶的研究进展,重点阐述了钒系和钛系Ziegler-Natta催化... 乙丙橡胶因其结构可控、主链饱和、耐老化好等优异性能,广泛应用于汽车配件、电线电缆、建筑材料、耐热胶管、密封构件等相关领域。从催化体系和聚合工艺两方面系统介绍了合成乙丙橡胶的研究进展,重点阐述了钒系和钛系Ziegler-Natta催化剂,普通型、桥连型以及限制几何构型茂金属催化剂,负载型茂金属催化剂以及非茂催化剂及其催化乙丙共聚合的特征;同时介绍了溶液聚合、悬浮聚合以及气相聚合的工艺流程及特点,以及乙丙橡胶的若干新品种;最后展望了乙丙橡胶的未来发展趋势。 展开更多
关键词 乙丙橡胶 催化体系 聚合工艺
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新媒体背景下网络新闻宣传管理的途径与对策研究 被引量:8
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作者 马大峰 《北京印刷学院学报》 2020年第10期17-19,共3页
随着我国社会科技的发展,新媒体借助数据技术集中进行优化,并呈现出集中迸发的趋势。在新媒体的功能发挥中,网络公共舆论应用媒体内容构建网络新闻与社会群众相联系的沟通与反馈渠道,不仅有助于促进我国社会公共监督与管理的水平稳步提... 随着我国社会科技的发展,新媒体借助数据技术集中进行优化,并呈现出集中迸发的趋势。在新媒体的功能发挥中,网络公共舆论应用媒体内容构建网络新闻与社会群众相联系的沟通与反馈渠道,不仅有助于促进我国社会公共监督与管理的水平稳步提升,同时也提高了公众对于网络新闻和社会事务关注的参与度。本文以网络新闻宣传管理为例,对新媒体背景下网络新闻宣传管理的关键要点进行分析,并提出应用途径和关键对策。 展开更多
关键词 新媒体背景 网络新闻 宣传管理 对策
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Post-marketing safety surveillance and reevaluation of Motherwort injection:A clinical study of 10094 cases 被引量:4
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作者 Cao Shan Zhang Wenhao +49 位作者 Zhao Ziwei Heng Mingli Bu Huaien Wang Hongwu Liu Xinghui Wang Zhong Cai Yan ma Yuyan Cui Shihong Deng Jihong Ding Guifeng Ding Yajuan Dong Linhong Duan Zhentao Fan Ling Fan Yang Fu Fen He Jing Ji Shuying Jin Lin Li Hong Li Hongying Liao Tao Lu Wei Luo Xiucui Lü Zhihui ma Fengchun ma dafeng Shi Tianyun Sun Juying Sun Xiaotong Teng Hong Wang Jinhua Wang Ruihua Wang Ying Wang Zhengling Xi Jie Xu Minjuan Xu Zhihong Yan Qian Yang Cuirong Yang Yimei Yin Jie Yu Jinhua Yuan Wenjun Zhang Guanli Zhang Meihua Zhao Renfeng Zhong Yonghong Zhou Jian 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2018年第4期625-635,共11页
OBJECTIVE:To investigate the safety profiles of Motherwort injection(MI).METHODS:A multi-center,prospective and drugderived hospital intensive monitoring method was conducted to assess the safety of MI in real world a... OBJECTIVE:To investigate the safety profiles of Motherwort injection(MI).METHODS:A multi-center,prospective and drugderived hospital intensive monitoring method was conducted to assess the safety of MI in real world applications.This study was based on a very large population after the injection was approved and marketed in China.All patients using the injection in participating hospitals were monitored to determine the incidence,pattern,severity and outcome of associated adverse events.RESULTS:The post-marketing surveillance was performed in 10 094 female patients from April to December,2015.The incidence of adverse drug reactions(ADRs) was 0.79‰(8/10 094).Among the 8 patients,the reported adverse events mainly included systemic abnormalities,such as fever,chills and eyelid edema;skin and appendages disorders,such as pruritus and rash;gastrointestinal disorders,such as nausea,abdominal distension and pain;heart rate and rhythm disorders,such as palpitation and increased heart rate.All of these ADRs were mild in severity.CONCLUSION:In this study the ADRs incidence rate of MI is very low,which supports that it is generally safe for use in obstetric and gynecological diseases.However,the total number of 8 ADRs recorded over a relatively short time span seems limited,and the low number of reports could not represent an absolute guarantee of safety. 展开更多
关键词 安全监视 注射 评估 临床 盒子 监视方法 多中心 医院
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