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回收聚乙烯醇缩丁醛(PVB)/ABS共混体系的制备及力学性能

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材料研究与应用 2010年第4期4卷 663-667页

作者：汪慧李小兰廖正福肖武华何晓红李冲李杰鸿张坚伟广东工业大学材料与能源学院广东广州510006 北京理工大学珠海学院化工与材料学院广东珠海519085

采用转矩流变仪,通过共混方法制备了回收PVB/ABS合金、增容PVB/ABS合金和纳米CaCO3填充改性PVB/ABS合金,研究了PVB对ABS、增容PVB/ABS合金和纳米CaCO3对增容PVB/ABS合金力学性能的影响.结果表明,加入ABS-g-MAH和SAN-g-EPDM可改善PVB/AB... 详细信息

采用转矩流变仪,通过共混方法制备了回收PVB/ABS合金、增容PVB/ABS合金和纳米CaCO3填充改性PVB/ABS合金,研究了PVB对ABS、增容PVB/ABS合金和纳米CaCO3对增容PVB/ABS合金力学性能的影响.结果表明,加入ABS-g-MAH和SAN-g-EPDM可改善PVB/ABS相容性和力学性能,ABS-g-MAH增容共混物力学性能优于SAN-g-EPDM增容体系,ABS-g-MAH加入量为5%～7%,纳米CaCO3添加量为5%时,PVB/ABS共混体系具有最优的综合力学性能.

关键词： PVB/ABS 共混性能

Comparison of BSA Release Behavior from Electrospun PLGA and PLGA/Chitosan Membranes

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Chemical Research in Chinese Universities 2011年第4期27卷 708-711页

作者： wu Li-li LI xiao-ran LI hua YUAN xiao-yan Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and Engineering Tianjin University Tianjin 300072 P.R. China

In order to encapsulate and controlled-release bioactive proteins,three fibrous membranes,i.e.,poly（L-lactide-co-glycolide）（PLGA）,hybrid PLGA and chitosan（H-PLGA/CS）,and core/shell PLGA/CS （C-PLGA/CS）,were produced by emulsion electrospinning,co-electrospinning and coaxial electrospinning,*** serum albumin（BSA） was selected as a model *** loading efficiency of BSA in the PLGA membrane was 1.56%,lower than those of H-PLGA/CS（5.98%） and C-PLGA/CS（4.80%）.BSA release profiles from the three membranes showed initial burst releases in the first 7 d and then sustained release for 28 *** releases at the end of the releasing period,28 d,from the above three membranes were nearly 63%,88% and 94%,respectively,indicating that the introduction of chitosan and the core/shell fiber structure could enhance BSA release *** addition,all these electrospun membranes could retain their fibrous morphologies after in vitro release of BSA for 28 d.

关键词： Controlled release Bovine serum albumin Electrospun membrane Poly(L-lactide-co-glycolide) Chitosan

A New Limonoid from the seed of Aphanamixis polystachya

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Chinese Chemical Letters 2002年第4期13卷 341-342页

作者： hua Ping ZHANG Shao hua wu xiao Dong LUO Yun Bao MA Da Gang wu Laboratory of Phytochemistry Kunming Institute of BotanyChinese Academy of SciencesKunming 650204

A new limonoid named rohituka-15 1, with a known limonoid dregeana-1 2, was isolated from the seed of Aphanamixis polystachya (Meliaceae). The 13C NMR data assignment of dregeana-1 2 and the structural elucidation of... 详细信息

关键词： Aphanamixis polystachya Meliaceae limonoid rohituka-15 dregeana-1.

Particle Swarm-Based Translation Control for Immersed Tunnel Element in the Hong Kong–Zhuhai–Macao Bridge Project

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China Ocean Engineering 2018年第1期32卷 32-40页

作者： LI Jun-jun YANG xiao-jun xiao Ying-jie XU Bo-wei wu hua-feng Merchant Marine College Shanghai Maritime University Institute of Logistics Science &Engineering Shanghai Maritime University

Immersed tunnel is an important part of the Hong Kong–Zhuhai–Macao Bridge(HZMB) project. In immersed tunnel floating, translation which includes straight and transverse movements is the main working mode. To decide the magnitude and direction of the towing force for each tug, a particle swarm-based translation control method is presented for non-power immersed tunnel element. A sort of linear weighted logarithmic function is exploited to avoid weak subgoals. In simulation, the particle swarm-based control method is evaluated and compared with traditional empirical method in the case of the HZMB project. Simulation results show that the presented method delivers performance improvement in terms of the enhanced surplus towing force.

关键词： immersed tunnel element translation control Hong Kong–Zhuhai–Macao Bridge(HZMB) project particle swarm optimization

Characterization of predominant bacteria isolates from clean rooms in a pharmaceutical production unit

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2007年第9期8卷 666-672页

作者： wu Gen-fu LIU xiao-hua Institute of Microbiology School of Life Sciences Zhejiang Universiity Hangzhou 310058 China

Aims: To screen for the predominant bacteria strains distributed in clean rooms and to analyze their phylogenetic relationships. Methods and Results: The bacteria distributed in air, surfaces and personnel in clean rooms were routinely moni-tored using agar plates. Five isolates frequently isolated from the clean rooms of an aseptic pharmaceutical production workshop were selected based on their colony and cell morphology characteristics. Their physiological and biochemical properties, as well as partial 16S rDNA sequences, were analyzed. Results showed that all the five isolates belong to Gram positive bacteria, of which three were Staphylococcus, one Microbacterium and one Bacillus species. Sensitivity tests for these bacteria isolates to 3 disin-fectants showed that isolate F03 was obtuse, and had low susceptivity to UV irradiation, while isolates F02, F01 and F04 were not sensitive to phenol treatment. Isolates F04, F01 and F05 were resistant to chlorhexidine gluconate. Conclusion: Bacteria widely distributed in clean rooms are mainly a group of Gram positive strains, showing high resistance to selected disinfectants. Sig-nificance and impact of the study: Clean rooms are essential in aseptic pharmaceutical and food production. Screening bacteria isolates and identifying them is part of good manufacturing practices, and will aid in finding a more effective disinfection method.

关键词： Clean room Bacteria 16S rDNA Phylogenetic tree Disinfectant Resistant abilities

A New Monoterpene Glycoside from Paeonia veitchii

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Chinese Chemical Letters 2002年第5期13卷 430-431页

作者： Shao hua wu xiao Dong LUO Yun Bao MA xiao Jiang HAO Da Gang wu Laboratory of Phytochemistry Kunming Institute of BotanyChinese Academy of SciencesKunming 650204

A new monoterpene glycoside, acetoxypaeoniflorin, was isolated from the root cortex of Paeonia veitchii Lynch.. The structure was elucidated by spectral methods.

关键词： Paeonia veitchii Lynch Paeoniaceae monoterpene glycoside acetoxypaeoniflorin.

紫细菌RS601 DCPIPH2→MV电子传递的研究

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Acta Biochimica et Biophysica Sinica 1997年第1期29卷 46-52页

作者：曾小华俞皓吴永强吴梦淦魏家绵宋鸿遇徐春和中国科学院上海植物生理研究所上海交通大学生物科学与技术系 200032 200030

紫色非硫细菌菌株*** 601（RS601）的载色体具有典型的***光谱特性。在光照和以DCPIPH2为电子供体条件下,RS601载色体能够串联呼吸电子传递链而耗氧或还原MV而构成DCPIPH2→MV的非循环电子传递链。电子传递抑制剂OP抑制DCPIPH2→MV电子... 详细信息

紫色非硫细菌菌株*** 601（RS601）的载色体具有典型的***光谱特性。在光照和以DCPIPH2为电子供体条件下,RS601载色体能够串联呼吸电子传递链而耗氧或还原MV而构成DCPIPH2→MV的非循环电子传递链。电子传递抑制剂OP抑制DCPIPH2→MV电子传递活性,其I50为1.0 mmol/L;抗霉素A对该电子传递影响较小,不存在I50。因此,MV在RS601中被还原的部位应介于次级醌双电子受体QB和细胞色素b之间,而不应在QA位置。讨论了***与***反应中心还原侧电子传递特性的差异。MV接受电子的位置可能因光细菌的品系的不同而不同。

关键词：紫细菌载色体 DCPIPH2→MV电子传递 Q_B 细胞色素b

A New 24, 30-Dinortriterpenoid from Paeonia delavayi

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Chinese Chemical Letters 2001年第4期12卷 345-346页

作者： Shao hua wu xiao Dong LUO Yun Bao MA xiao Jiang HAO Da Gang wu Laboratory of Phytochemistry Kunming Institute of BotanyChinese Academy of SciencesKunming 650204

A new triterpenoid. 3 beta. 4 beta. 23-trihydroxy-24, 30-dinorolean-12. 20(29)-dien-28-oic acid. together with five known compounds. 2 alpha. 3 beta. 23-trihydroxy-12-oleanen-28-oic acid-beta -D-glucose glucopyranosyl ester. palbinone. 2-hydroxy-benzoic acid, vanillic acid. syringic acid. were isolated from the roots of Paeonia delavayi Franch. Their structures were characterized by spectral analysis.

关键词： Paeonia delavayi Franch. Paeoniaceae triterpenoid 3 beta,4 beta, 23-trihydroxy-24, 30-dinorolean-12,20(29)-dien-28-oic acid

A capture probability analytic model for the electromagnetic launched anti-torpedo torpedo

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Defence Technology（防务技术） 2022年第2期18卷 261-270页

作者： Bao-qi wu xiao-cun Guan Shao-hua Guan Jing-bin Shi National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of EngineeringWuhan430033China Jiangsu Automation Research Institute Lianyungang 222006China

With the unique characteristics,electromagnetic launch technology is applicable to launch shipborne anti-torpedo torpedo(ATT).This paper aims to establish an analytic model to pre-evaluate the capture probability of the electromagnetic launched *** mathematics model of the multi-stage coilgun and the trajectory of the ATT is established for *** influence factors of the capture probability are analyzed respectively,including the entry point dispersion of the ATT and the position dispersion of the incoming *** the advanced angle interception mode,the ATT search model is obtained according to the positional relationship,and the course error is synthetically calculated according to the differentiation of implicit function.A geometric method to calculate the integral boundaries of the probability density function is proposed,based on the relative motion of the ATT and the incoming *** verify the proposed integral model,the digital simulation and comparison is *** results reveal that the variation trends and the calculation value of the proposed analytic model are coincident with the statistic results from Monte Carlo *** implications of the results regarding the analytic model are discussed.

关键词： Electromagnetic launch Anti-torpedo torpedo Analytic model Dispersion variance Integral boundary