143 research outputs found

    Clinical Observation of Different Regimens for Treatment Early Onset Preeclampsia

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    目的比较不同方案治疗早发型子痫前期的疗效和安全性。方法选取2013年5月至2016年10月在我院妇产科诊治的早发型子痫前期孕妇200例,根据随机数字表法分成4组,每组各50例:硫酸镁常规治疗组(A组);硫酸镁常规治疗+丹参注射液组(B组);硫酸镁常规治疗+低分子肝素组(C组);硫酸镁常规治疗+丹参注射液+低分子肝素组(D组)。观察各组脐动脉收缩压与舒张压比值(S/D)、平均动脉压、24h蛋白尿、分娩方式、延长孕龄时间、新生儿窒息率、母体并发症和不良反应等指标。结果①各组治疗后平均动脉压均显著降低,差异有统计学意义(均P0.05)。各组治疗后S/D均降低(均P0.05)。②与A组比较,B、C、D组终止妊娠孕周增加(均P0.05)。结论硫酸镁联合低分子肝素和/或丹参治疗早发型子痫前期疗效均优于硫酸镁常规治疗,且安全性不低于硫酸镁常规治疗。ObjectiveTo observe the efficacy and safety of different regimens in treatment early onset preeclampsia.Methods200cases of early onset preeclampsia patients admitted to our hospital were randomly divided into four groups,each group of50cases.group A:magnesium sulfate conventional treatment,group B:magnesium sulfate+salvia miltiorrhiza,group C:magnesium sulfate+low molecular heparin,group D:magnesium sulfate+salvia miltiorrhiza+low molecular heparin.The ratio of systolic and diastolic pressure of fetal umbilical artery(S/D),mean arterial pressure,24h proteinuria,mode of delivery,prolong gestational age,neonatal asphyxia,maternal complications and adverse reactions were compared among the four groups.Results①After treatment,the mean arterial pressure was significantly reduced(P<0.05),but there was no significant difference among groups(all P>0.05).Post treatment S/D decreased significantly(all P<0.05),D group post treatment S/D especially decreased(P<0.05).②Com pared with A group,B,C,D group termination of pregnancy increased gestational weeks(all P<0.05).③B,C,D groups prolonged gestational age and neonatal weight were higher than A group,however the rate of neonatal asphyxia was lower than that of group A(P<0.05).The gestational age of C and D groups were higher than that of group B,and the rate of neonatal asphyxia in group D was lower than that in group B(all P<0.05).④There were no significant difference in the incidence of maternal complications and adverse reactions among four groups(all P>0.05).ConclusionThe efficacy of magnesium sulfate combined with low molecular weight heparin and/or salvia miltiorrhiza in treatment early onset preeclampsia was better than that of magnesium sulfate,and the safety was not lower than that of magnesium sulfate.河南科技攻关项目(152102310086

    传播的概念、伦理与实践——哈米德·莫拉纳的伊斯兰视角

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    近年来,非西方社会的文化特殊性已经成为传播理论的一个重要组成部分,哈米德·莫拉纳从穆斯林世界的历史与文化价值出发,对传播概念的重新定义、伊斯兰传播伦理思想的梳理,对伊斯兰传播的核心原则“认主独一“、“责任、引导和行动“、“建设共同体“与“虔敬“进行了重点分析,概括出“伊斯兰的传播范式“。20世纪90年代以后,穆斯林地方媒介实践对这一传播范式作出了回应与发展,表现为大众传播中“伊斯兰媒介“的出现,以及媒介空间穆斯林多重身份的认同。由此,在传播伦理的全球化与媒介价值的本土化过程中,使得穆斯林与媒介的相关研究具有了特殊的价值与意义。国家自然科学基金项目“西部城市民族旅游社区地方性保持:多元认同的建构主义研究”阶段性成果(41271157

    菲华报刊与华文音乐教育的发展——基于菲律宾《世界日报》的报道内容分析

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    华文音乐教育是华人寻求文化认同、提升族群凝聚力的重要手段。菲律宾华文音乐教育作为菲律宾华文教育的重要组成部分,在菲华社会的传播历时百年,这其中菲华报刊对菲华音乐教育的报道推动,对菲华音乐教育的发展发挥了重要作用,对中国文化在菲律宾的传播与发展发挥了重要作用。国家社会科学基金项目“菲律宾华文报刊与中国文化传播研究”(14BXW056)阶段性成

    Characterization and Catalytic Performance of Co-MCM-41 for Styrene Epoxidation

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    分别采用模板剂离子交换法(TIE法)、水热合成法(DHT法)及浸渍法合成了Co-MCM-41,此催化剂能够在无共还原剂存在条件下催化以氧气为氧化剂的烯烃环氧化反应.另外考察了催化剂的结构特别是钴的存在状态与催化性能之间的关系,以期能够弄清催化环氧化反应中催化剂活性位的本质.X射线衍射及N2吸附-脱附等结果证实,当导入分子筛中的钴的量在2.2%以下时,所有的Co-MCM-41均具有规整排列的六方孔道结构.漫反射光谱和H2程序升温还原等结果表明,通过TIE法合成的样品中钴主要以孤立态钴离子(single-site Co(Ⅱ))形式存在,而以DHT法合成的样品中钴主要以微晶态Co2SiO4形式存在,浸渍法合成的样品中则存在大量颗粒状氧化钴.催化反应结果表明,当钴含量均接近1.0%时,采用TIE法合成的样品的苯乙烯转化率为45%,而用DHT法和浸渍法合成的样品的苯乙烯转化率均低于30%.考虑到氧化钴和Co2SiO4的低活性以及DHT法和浸渍法合成样品中可能存在一小部分孤立态钴离子,我们推测MCM-41中的孤立态钴离子是催化活化分子氧发生环氧化反应的高效活性位.The cobalt-containing MCM-41 can be used as the catalyst for the liquid-phase epoxidation of styrene with molecular oxygen.The correlations between its structures,especially the states of Co in it,and its catalytic performance were studied.It may be helpful to make clear the nature of active sites for the epoxidation.(Co-MCM-41) samples synthesized by a template-ion exchange(TIE) method, a direct hydrothermal(DHT) method and a conventional impregnation method have been characterized in detail.The X-ray diffraction and(N_2-adsorption) results indicate that the hexagonal array of mesopores in these samples is sustained as the cobalt contents are lower than 2.2%.The results of diffuse reflectance UV-Vis spectroscopy and H_2 temperature-programmed-reduction suggest that the cobalt introduced into Co-MCM-41 by the TIE method exists mainly as single-site(Co(Ⅱ)) ions,whereas the cobalt in the sample synthesized by the DHT method exists mainly as Co_2SiO_4 in a microcrystalline form and the samples prepared by the impregnation method contain a large proportion of cobalt oxide.With a similar cobalt content(ca 1.0%),the sample prepared by the TIE method gave a conversion of 45% in the epoxidation of styrene with molecular oxygen,however,the sample prepared by the DHT method or impregnation method gave a conversion lower than 30%.Since cobalt oxide and Co_2SiO_4 show a lower activity for the epoxidation reaction and there may also exist a small part of single-site Co(Ⅱ) ions in the samples prepared by the DHT method or impregnation method,we thus suggest that the single-site Co(Ⅱ) ions in MCM-41 are the real active sites for the epoxidation with molecular oxygen.国家自然科学基金资助项目(20273054,20373055

    LTE230-Based Power Wireless Private Network Applications and Implementation on Changdao

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    针对山东长岛特有的复杂海岛环境、交通不便、通信网络分散等问题,提出了建设LTE230系统的发展方案。通过对LTE230系统的优势特点进行分析,着重介绍了多个智能化的应用,该系统在智能电网中发挥了不可替代的作用,其良好的覆盖效果和通信能力可满足当地的应用需求。In Shandong province, targeting Changdao's unique complex island environment, traffi c inconvenience, and the dispersion issues of communication network, the paper proposed the construction LTE230 system development program. Through the analysis of the advantages of LTE230 system characteristics, the paper emphatically introduced multiple intelligent applications. The system played an irreplaceable role in smart grid, its good coverage and communication ability met the local application demand.烟台科技项目(5206051400K9

    Reviews on Ecosystem Services Valuation and GIS-Based Mapping

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    生态系统服务价值评估是当前生态经济学领域的研究热点,为解决生态系统对人类的重要性提供了量化参考。文章论述了国内外生态系统服务价值的评估方法,分别从静态评估、动态评估和gIS技术应用三大方面进行了归纳分析,提出今后应重点关注生态系统服务价值的时空动态模型开发、评价指标体系与评价方法的标准化制订和生态系统综合管理与应用等方面的研究。Ecosystem services valuation has become one of the hotspots in the field of ecological economics,and provides quantitative evidence concerning the importance of the ecosystem for human-beings.In this paper,we first discussed ESV method in static,dynamic and GIS based respectively.We pointed out that scientific community should focus on several topics in the near future to deepen the understanding of the values of ecosystems.These topics include the development of spatially and temporarily explicit dynamic valuation models,standardization of valuation methods and payment for ES and meeting the requirements of regional ecosystem management and decision making.北京市科学技术委员会“永定河生态修复目标体系研究”(D090409004009003);北京市生态学重点学科项

    理论与计算化学研究进展

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    化学是一门有坚实理论体系的基础学科,作为其中一个分支,理论与计算化学的飞速发展使得化学成为实验与理论并重的科学.结合价键理论方法、生物体系理论模拟和激发态光化学、固体表面与纳米结构体系、复杂体系分子量子动力学和密度泛函理论方法发展和核磁共振理论研究等,简要回顾了近期本研究团队和国内外本学科的发展情况,重点介绍了厦门大学在量子化学理论计算方法发展、计算程序研发、复杂体系的动力学以及酶催化反应的计算模拟等方面的研究

    丝组二肽——现代蛋白酶分子进化过程中的原始雏形

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    系统阐述了我们实验室近十五年来对丝组二肽的生物活性的研究.丝组二肽是目前报道的具有多种切割活性的最小活性肽,它不仅能够切割DNA,而且可以切割蛋白质及羧酸酯.丝组二肽是迷你的磷酸酯酶和蛋白水解酶,是现代蛋白酶分子进化过程中的原始雏形

    Progress of Organic Chemistry(2011~2012)

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    本文综述了中国大陆地区有机化学研究人员2011至2012年两年内在合成方法学、有机合成化学、元素有机化学以及天然产物化学等领域获得的重要成果。文章中共引用参考文献355篇,其中110多篇手性金属配合物和有机小分子催化的不对称反应、金属催化的碳氢键活化等合成方法学论文和30余篇氟有机化学论文基本来源于德国《应用化学》(国际版)和《美国化学杂志》。本文汇集了中国有机化学家两年中合成的150多个具有生物活性和化学结构多样性的天然产物,其中不乏具有高度挑战性的复杂天然分子。在近两年中中国有机化学家从陆地和海洋的生物体内发现各种不同类型新天然产物90多个。This biennale report reviewed the major achievements of organic chemistry involved to synthetic methodologies,synthetic chemistry,element-organic chemistry,and natural product chemistry in Mainland of China.There were 355 references cited in this report.Among them,about 110 papers related to the synthetic methodologies as well as about 30 papers of organofluorine chemistry reported herein were collected solely from ACIE and JACS.The report presented the synthesis of more than 150 natural products with diverse chemical structures and bioactivities,including some complex molecules with high synthetic challenge as well as the isolation of more than 90 new natural products with various structural types from continental or /and marine creatures,which were reported by Chinese chemists in 2011 ~ 2012

    基于裂结技术的单分子尺度化学反应研究进展

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    分子电子学是研究单分子器件的构筑、性质以及功能调控的一门新兴学科。其中,金属/分子/金属结的构筑和表征是现阶段分子电子学的主要研究内容。裂结技术是当前分子电子学研究的主要实验方法,主要包括机械可控裂结技术和扫描隧道显微镜裂结技术。本文对裂结技术进行了介绍,并对近年来利用这些技术,在单分子尺度化学反应的检测和动力学研究,以及将这些技术与溶液环境、静电场、电化学门控等方法相结合,调控单分子器件的电输运性质等方面所取得的进展进行了概述。国家重点研发计划(2017YFA0204902);;\n福建省自然科学基金(2016J05162)资助项目~
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