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Two New Sesquiterpenes from Atractylodes macrocehpala

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Chinese Chemical Letters 1998年第12期9卷 0-0,0-0页

作者： Qi Feng ZHANG Shi de LUO hut Yin WANG(Laboratory of Phytochemistry, Kundring institute of Botang, Academia Sinica, Kunndng, 650204) Laboratory of Phytochemistry Kunming Institute of Botang Academia Sinica Kunming 650204 China

Two new sesquiterpenes: beishulenolide A 1 and peroxiatractylenolide III 2 wereisolated from Atraclylodes macrocephala Koids (compositae).Their structures were elucidated onthe basis of spectral evidence, especially 2... 详细信息

关键词： Beishulenolide A peroxiatractylenolide Ⅲ atractylodes macrocephala, compositae

A Novel Method for Studying the interaction of Macromolecule with Small Molecule by Means of Affinity Capillary Electrophoresis

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Chinese Chemical Letters 1999年第3期10卷 235-238页

作者： Met FANG Li SHENG hut Wan HAN Xiao YU Rut ZHAO Guo Quan LIU(Laboratory of Analytical Chemistry in Life Science, Institute of Chemistry, Chinese Academy ofSciences，Beijing 100080) Lab. of Analyt. Chem. in Life Sci. Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China

A novel capillary electrophoresis method coupled with on-line microdialysis using an attachable electrode has been developed to study the interaction of macromolecule with small molecule. The binding constants of bovine serum album (BSA) with d,L-tryptophan (Trp), sulfamethoxazole (SMZ) with trypsin and chymotrypsin were determined. These values are 2.3 x 10(4)L/mol for BSA-L-Trp; 1.77 x 10(3) L/mol for BSA-d-Trp in pH 7.4, 50 mmol/ L phosphate; 1.4 x 10(4) L/mol for SMZ- trypsin and 6.0 x 10(3) L/mol for SMZ-chymotrypsin in pH 6.5, 25 mmol/L Tris buffer. The proposed method has merits of speed, low sample consumption and readily available to be performed in desired physiological conditions.

关键词： interaction of macromolecule with small molecule binding constant affinity capillary electrophoresis microdialysis membrane

The Channel Behavior of Gramicidin d in the Self-assembled Monolayer

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Chinese Chemical Letters 1999年第2期10卷 165-166页

作者： Ji dong GUO Li Xiang WANG Gong Quan SUN Tian Hong LU hut YANG(Changqhun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022)(department of Chemistry, Naming Normal University, Naming, 210097) Changchun Inst. of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China department of Chemistry Nanjing Normal University Nanjing 210097 China

It was found for the first time that gramicidin d (Gd) molecules can be incorporated into the OdM monolayer which is self-assembled on the surface of the gold electrode and form monovalent cation channels.

关键词： gramicidin self-assembled monolayer channel behavior

Hierarchical control for parallel bidirectional power converters of a grid-connected dC mlcrogrnd

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Frontiers of Information Technology & Electronic Engineering 2017年第12期18卷 2046-2057页

作者： Hui-yong hut Yong-gang PENG Yang-hong XIA Xiao-ming WANG Wei WEI Miao YU College of Electrical Engineering Zhejiang University Hangzhou 310027 China

The dC microgrid is connected to the AC utility by parallel bidirectional power converters （BPCs） to import/export large power, whose control directly affects the performance of the grid-connected dC microgrid. Much work has focused on the hierarchical control of the dC, AC, and hybrid microgrids, but little has considered the hierarchical control of multiple parallel BPCs that directly connect the dC microgrid to the AC utility. In this paper, we propose a hierarchical control for parallel BPCs of a grid-connected dC mierogrid. To suppress the potential zero-sequence circulating cm-cent in the AC side among the parallel BPCs and realize feedback linearization of the voltage control, a d-q-O control scheme instead of a conventional d-q control scheme is proposed in the inner current loop, and the square of the dC voltage is adopted in the inner voltage loop. dC side droop control is applied to realize dC current sharing among multiple BPCs at the primary control level, and this induces dC bus voltage deviation. The quantified relationship between the current sharing error and dC voltage deviation is derived, indicating that there is a trade-off between the dC voltage deviation and current sharing error. To eliminate the current sharing error and dC voltage deviation simultaneously, slope-adjusting and voltage-shifting approaches are adopted at the secondary control level. The pro- posed tertiary control realizes precise active and reactive power exchange through parallel BPCs for economical operation. The proposed hierarchical control is applied for parallel BPCs of a grid-connected dC microgrid and can operate coordinately with the control for controllable/uncontrollable distributional generation. The effectiveness of the proposed control method is verified by corresponding simulation tests based on Matlab/Simulink, and the performance of the hierarchical control is evaluated for prac- tical applications.

关键词： Parallel bidirectional power converters Hierarchical control dC microgrid

A New Triterpenoid Oligoglycoside Escin IVe from the Seeds ofAesculus Chinensis

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Chinese Chemical Letters 1999年第6期10卷 473-476页

作者： Jing ZHAO Xiu Wei YANGI Yu Xin CUl Xue hut LIU Shun He OUYANGZ(National Laboratory of Natural and Biomimetic drugs, Beijing Medical University.Beijing 100083Yantai Luye Pharmaceutical Co. Ltd.. 43 Yingbin Road. Yantai. Shandong 264001) Natl. Lab. Nat. and Biomimetic drugs Beijing Medical University Beijing 100083 China Yantai Luye Pharmaceutical Co. Ltd. 43 Yingbin Road Yantai Shandong 264001 China

A new triterpenoid saponin named escin IV e was isolated from the seeds of Aesculus chinensis. Its structure was established as 28-tigloylprotoaescigenin-3 beta-O- [beta-d-glucopyranosyl (1-2)] [beta-d-glucopyranosyl ... 详细信息

关键词： Aesculus chinensis hippocastanaceae triterpenoid saponins escin IVe

CATALYTIC　ASYMMETRIC　EPOXIdATION　OF　a－FURFURYLAMINE　IN　THE　PRESENCE　OF　MOLECULAR　SIEVE　ANd　CaH_2

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Chinese Chemical Letters 1994年第7期5卷 567-568页

作者： Zhi hut LU Xue You ZHU and Wei Shan ZHOU(Shanghai Institute of Organic Chemistry ,Chinese Academ of Sciences.354 Fengling Lu. Shanghai 200032)(department of Bio-engineering Sichuan University. Chengdu 610064)

The modified procedure of the catalytic asvmmetric epoxidation of the a-furfurylamines(dl)-1a-d in the presenceof molecular sieve and CaH2 provides the slow-reacting enantiomers (S)-1a-d and the fast-reacting enantiom...

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相控阵三维声纳数据离线可视化处理系统

计算机工程 2011年第17期37卷 239-241页

作者：李长辉陈耀武刘清文浙江大学数字技术及仪器研究所杭州310027

设计并实现一种相控阵三维声纳图像的离线数据处理系统,并进行可视化建模。系统中精确配准采用最近点迭代配准,结合外围点消除法,通过拟牛顿进行最优化。拼接融合及多帧再重建采用多级分辨率,同时支持低精度的快速显示和高精度的精细显... 详细信息

设计并实现一种相控阵三维声纳图像的离线数据处理系统,并进行可视化建模。系统中精确配准采用最近点迭代配准,结合外围点消除法,通过拟牛顿进行最优化。拼接融合及多帧再重建采用多级分辨率,同时支持低精度的快速显示和高精度的精细显示。测试结果证明,该系统能较好地实现相控阵三维摄像声纳图像的处理及可视化。

关键词：相控阵三维声纳单帧重建配准拼接可视化工具箱可视化

Biohydrometallurgy applied to exploitation of black shale resources： Overview of Bioshale FP6 European project

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中国有色金属学会会刊：英文版 2008年第6期18卷 1485-1490页

作者： P. d＇HUGUES P. SPOLAORE Bioshale Consortium BRGM EPI/Eco 3 Avenue C. Guillemin 45060 Orleans Cedex 2 France

Bioshale 工程，由欧洲委员会(FP6 计划) 共同资助，在 2004 年 10 月开始了并且在 2007 年 10 月完成了。这个工程的主要目的是为黑页岩矿石的 eco 有效的利用定义创新 biotechnological 过程。黑页岩矿石包含贱、宝贵、高技术的金属... 详细信息

Bioshale 工程，由欧洲委员会(FP6 计划) 共同资助，在 2004 年 10 月开始了并且在 2007 年 10 月完成了。这个工程的主要目的是为黑页岩矿石的 eco 有效的利用定义创新 biotechnological 过程。黑页岩矿石包含贱、宝贵、高技术的金属而且有机物的高内容由常规技术的那缺陷金属恢复。三世界级黑人页岩沉积物被选择为 R&d 行动的目标。这些包括在自然条件下面存在的一沉积物(Talvivaara，芬兰) ，一个当前在过程(Lubin，波兰) 并且在采矿以后的(Mansfeld，德国) 。工作计划的主要技术方面能如下被总结：忍受金属的部件的地质的资源和选择的评估；为金属恢复要测试的生物协会的选择；对 bioprocessing 的评价发送，包括为金属恢复处理的 hydrometallurgical；包括社会、环境的影响的新过程的 techno 经济的评估。13 欧洲人获得的主要结果的概述合伙(从 8 个国家) 在这个完成的研究计划包含了在这个工作被给。

关键词：生物技术生物浸取矿石处理黑页岩

围术期收缩压变异性是否可预测心脏手术后死亡率：ECLIPSE研究的探索性分析

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麻醉与镇痛 2013年第2期9卷 34-45页

作者： Solomon Aronson Cornelius M. dyke Jerrold H. Levy Albert T. Cheung Philip d. Lumb Edwin G. Avery Ming-yi hut Mark F. Newman 潘鹏(译) 李文志(校) department of Anesthesiology Duke University Medical Center Durham North Cardinat South East Texas Cardio-vascular Surgery Associates Houston Texas department ofAnesthesiology Emory University School of Medicine Atlanta Georgi~ department of Anesthesiology and Critical Care University of Pennsylvania Philadelphia Pennsylvania department of Anesthesiology Keck School of Medicine Los Angeles California department of Anesthesiology and Perioperative Medicine University Hospitals Case Medical Center ClevelandOhio and The Medicines Company Parsippany New Jersey 不详

背景目前，有关围术期血压稳定性-9手术预后关系的研究很少，本研究旨在验证心脏手术患者中收缩压（systolic blood pressure，SBP）变异性与术后30天死亡率具有相关性这一假设。方法本研究从ECLIPSE试验中随机选取1512例围术期高血压... 详细信息

背景目前，有关围术期血压稳定性-9手术预后关系的研究很少，本研究旨在验证心脏手术患者中收缩压（systolic blood pressure，SBP）变异性与术后30天死亡率具有相关性这一假设。方法本研究从ECLIPSE试验中随机选取1512例围术期高血压患者，分析其SBP变异性。通过超出既定SBP可变范围的偏差×持续时间（曲线下面积）衡量SBP变异性。手术中既定的SBP可变范围为65—135mmHg，手术前和手术后为75—145mmHg，按10mmHg递增提高SBP低限，将既定的SBP可变汜44-围逐步缩窄到手术中105-135mmHg及手术前手术后115—145mmHg。应用多元逻辑回归分析评价收缩压变异性与从ECLIPSE试验结果中得到手术后30天死亡率的关系。结果超过既定范围的SBP变异性（手术中75—135mmHg及手术前手术后85。145mmHg）与手术后30天的死亡率显著相关。每增加60mmHg·min^-1·h^-1的收缩压偏差，手术后30天死亡风险的比值比为1．16（95％可信区间1．04—1．30）。当曲线下的面积从0增加到300mmHg·min^-1·h^-1对于低危组患者，30天死亡率的预测概率从0．2％增加到0．5％，而高危患者从42．4％增加到60．7％。结论心脏手术患者围术期血压变异性与30天死亡率相关，并与超出既定的SBP可变范围（手术中75—135mlnng及手术前手术后85—145mmHg）的偏差程度成正比。与低危组患者相比，高危组患者死亡率的预测值更高。

关键词：收缩压变异性术后死亡率心脏手术预测概率围术期高血压患者曲线下面积逻辑回归分析