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SOLUTION CRYSTALLIZATION BEHAVIOR OF LINEAR AND STAR-SHAPED POLY(ETHYLENE GLYCOL)-b-POLY(ε-CAPROLACTONE) BLOCK COPOLYMERS

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Chinese Journal of Polymer Science 2013年第12期31卷 1717-1724页

作者： Ting Yu Jian-qiang Zhang ya lia Su-dan Shen Wen-feng Wei Peng Chen 王宗宝顾群 Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences School of Petrochemical Technology Lanzhou University of Technology Institute of Material Engineering Ningbo University of Technology

Lamellar crystals of diblock, triblock and four-arm poly（ethylene glycol）-b-poly（ε-caprolactone）（PEG-b-PCL） crystalline-crystalline copolymers were successfully obtained from their solution. Morphology and structure of lamellar crystals of crystalline-crystalline copotymers were investigated using tapping-mode atomic force microscopy （AFM） and selected area electron diffraction （SAED）. All of these samples showed the truncated-lozenge multilayer basal shapes with central screw dislocation or central stack, which were all obtained simultaneously from the oil bath. The diffraction pattern of PEG block lamellar crystal is attributed to the （120） diffracting planes and the pattern of PCL block lamellar crystal is attributed to the （1 I0） diffracting planes and （200） diffracting planes according to the SAED results. Four （110） crystal growth planes and two （200） crystal growth planes are discovered for the PCL blocks, but the （120） crystal growth planes of PEG blocks are hided in the figure of AFM. The crystalline structure of the four-arm copolymers （FA） is more disorder and confused than that of the diblock （DI） copolymer and the striated fold surface structures of lamellar crystals of four-arm copolymers （FA） are smoother than these of linear analogues, owing to the confused crystallization of blocks caused by the mutual restriction of blocks and the hindrance of the dendritic cores. In addition, the aspect ratio of FA is greater than that of the others. It is hypothesized that there are two reasons for the change of aspect ratios. First, the （200） diffracting planes of PCL crystals grew slowly compared to their （110） diffracting planes because of difference in the energy barrier. Secondly, edge dislocations on the （200） diffracting planes are also responsible for the variation of the aspect ratio. Consequently, the crystalline defects are augmented by the competing blocks crystallized simultaneously and the hindrance of the dendritic cores.

关键词： Lamellar crystal Topological structure PEG-b-PCL Edge dislocation Aspect ratio.

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Instant formation of nanopores on flexible polymer membranes using intense pulsed light and nanoparticle templates

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International Journal of Smart and Nano Materials 2023年第4期14卷 391-405页

作者： Miaoning Ren Tianyu Li Wenxing Huo Yu Guo Zhiqiang Xia ya lia Jing Niua M.Serdar Onses Xian Huang Department of Biomedical Engineering Tianjin UniversityTianjinChina ERNAM-Nanotechnology Research and Application Center Department of Materials Science and EngineeringErciyes UniversityKayseriTurkey

The development of simple and high-throughput approaches to yield solid-state nanopores on large surface membranes may facilitate the prevalence of nanopore analysis technology and in-vitro diagnosis using portable ***,solidstate nanopores are typically realized by complex and highend nanofabrication ***,we present a method to achieve nanopores on polymer membranes using,silver nanoparticles(AgNPs)as templates and intense pulsed light(IPL)as a heating *** density and size of nanopores are controllable by adjusting the spin coating rate,the concentration of nanoparticle suspension,and the size of nanoparticles(NPs).The temperature of the AgNPs can rapidly reach 1132 K under instant heating of photothermal effect through light irradiation in 2 ms,resulting in localized melting and decomposition of an underneath polycarbonate(PC)membrane to yield nanopores with sizes ranging from 10 to 270 *** removing the nanoparticle residues,the flexible membrane with nanopores can be integrated into a flow cell to achieve a nanopore sensor that has been used to measure the translocation behaviors of bovine serum albumin(BSA).The results have demonstrated the capability of the sensor in protein denaturation *** low-cost and highthroughput technique to fabricate solid-state nanopores on flexible polymeric membranes may facilitate the development of more nanopore-based flexible sensors that can be integrated with other flexible components for wearable diagnosis.

关键词： Solid-state nanopore intense pulsed light polymer AgNPs flexible membrane

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乌鲁木齐市两所医院高血压患者自我管理现状及影响因素分析

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解放军护理杂志 2012年第19期29卷 5-8,12页

作者：代亚丽余启萍段永珠新疆医科大学护理学院新疆乌鲁木齐830011 乐山职业技术学院护理系外科护理学教研室四川乐山614000

目的了解乌鲁木齐市部分高血压患者自我管理的现状,分析其影响因素。方法运用自行设计的高血压自我管理行为问卷及相关影响因素问卷,对就诊于乌鲁木齐市两所三级甲等综合性医院高血压门诊的390例高血压患者进行调查。结果 390例高血压... 详细信息

目的了解乌鲁木齐市部分高血压患者自我管理的现状,分析其影响因素。方法运用自行设计的高血压自我管理行为问卷及相关影响因素问卷,对就诊于乌鲁木齐市两所三级甲等综合性医院高血压门诊的390例高血压患者进行调查。结果 390例高血压患者的自我管理总得分为(60.23±8.20)分,其中饮食管理(20.22±5.60)分、治疗依从性管理(16.94±3.52)分、日常活动管理(12.06±2.96)分、社会心理管理(11.01±3.22)分;影响因素主要有性别、年龄、民族、疾病程度、高血压知识、自我效能、抑郁程度及社会支持等。结论乌鲁木齐市两所三级甲等综合性医院高血压患者的自我管理呈中等水平,多种因素影响其自我管理水平,护理人员应针对患者的年龄、性别、民族特征等进行有效的健康干预,提高其自我管理水平,改善其生活质量。

关键词：高血压自我管理影响因素

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我国反垄断法中罚款裁量因素的结构性功能重塑

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学术论坛 2024年第2期47卷 47-57页

作者：张雅香港城市大学法学院中国香港999077 中国政法大学市场监管法治研究中心

就法律责任而言,《中华人民共和国反垄断法》的首次修订侧重责任类型的细化,而对罚款裁量问题的关注有所不足。在责任体系构建完成后,细化法律责任的科学性、合理性问题应提上日程。反垄断罚款制度包含高度复杂的结构和程序,在这一结构... 详细信息

就法律责任而言,《中华人民共和国反垄断法》的首次修订侧重责任类型的细化,而对罚款裁量问题的关注有所不足。在责任体系构建完成后,细化法律责任的科学性、合理性问题应提上日程。反垄断罚款制度包含高度复杂的结构和程序,在这一结构中基本裁量因素应发挥初步调整与平衡的功能,政策性裁量因素应发挥合理性调整与平衡的功能。但是,通过对我国2021年以来查处的42起违法垄断案件进行实证分析发现,我国反垄断罚款裁量因素呈现结构性功能缺失的问题,一定程度上偏离了应有的指导价值。导致该问题的主要原因是法定裁量因素模糊和“一步式”裁量过程隐形化,因此需要从明确裁量因素适用步骤、细化法定裁量因素类别、确定裁量因素对罚款比率的影响幅度三个方面进行反垄断罚款裁量因素结构性功能的重塑。

关键词：反垄断法行政罚款系统结构裁量因素

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A Subspace Version of the Powell–Yuan Trust-Region Algorithm for Equality Constrained Optimization

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Journal of the Operations Research Society of China 2013年第4期1卷 425-451页

作者： Geovani Nunes Grapiglia Jinyun Yuan ya-xiang Yuan Departamento de Matemática Universidade Federal do ParanáCentro PolitécnicoCx.postal 19.08181531-980CuritibaParanáBrazil The Capes Foundation Ministry of Education of BrazilCx.postal 25070.040-020BrasíliaDistrito FederalBrazil State Key Laboratory of Scientific/Engineering Computing Institute of Computational Mathematics and Scientific/Engineering ComputingAcademy of Mathematics and Systems ScienceChinese Academy of SciencesZhongguancundonglu 55Beijing 100190P.R.China

This paper studied subspace properties of the Celis–Dennis–Tapia(CDT)subproblem that arises in some trust-region algorithms for equality constrained opti*** analysis is an extension of that presented by Wang and Yuan(***.104:241–269,2006)for the standard trust-region *** suitable conditions,it is shown that the trial step obtained from the CDT subproblem is in the subspace spanned by all the gradient vectors of the objective function and of the constraints computed until the current *** on this observation,a subspace version of the Powell–Yuan trust-region algorithm is proposed for equality constrained optimization problems where the number of constraints is much lower than the number of variables. The convergence analysis is given and numerical results arealso reported.

关键词： Constrained optimization Trust-region methods Subspace methods

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EFFECTS OF BINDERS ON THE PRODUCTION OF LIGHT ALKENES FROM SYNGAS OVER K-Fe-MnO/SILICALITE-2 CATALYST Ⅰ. EFFECT OF VARIOUS BINDERS ON CO HYDROGENATION

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Journal of Energy Chemistry 1996年第1期 1-11页

作者： XU Long-ya WANG Qing-Xia XU Yi-De yaNG Li WANG Kai-Li(Dalian Institute of Chemical Physics To whom correspondence should be addressed.)(State Key Laboratory of CatalysisDalian Institute of Chemical Physics. The Chinese Academy of Sciences Dalian. lia

The performance of the K-Fe-MnO/Si-2 catalyst for the production of light olefins via Co hydrogenation changes obviously with the addition of binders. The results of CO hydrogenation. TPR, Mossbauer soectram CI0TPF, CO/H2-TPSR and C2H4/H2-TPSR are employed to investigate the effects of various binders on the physical-chemical states and catalytic behaviors of K-Fe-MnO/Si-2 ccatalyst to produce light olefins via stbgas, TuO2 can promote the reduction of FE and strengthen the adsorption of CO resulting in raising olefic selectivity. Other binders such as ***2, MgO, once added into the catalyst, may cause formation of inorganic salts between FeO and binders leading to decrease of Fe reduction and a loss of olefin selectivity for CO hydrogenation. Especiallly, for K-Fe-MnO/Si-2catalyst with Al2O3 binder directly, the strong secondary reactions of ethylene during CO hydrogenation cause a very poor light olefin selectivity,which will be improved greatly by modifying Al2O3.

关键词： Fe-MnO/Si-2 light alkenes carbon monoxide binder

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Efficient generation of non-classical photon pairs in a hot atomic ensemble

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Chinese Optics Letters 2018年第8期16卷 71-74页

作者： Chengyuan Wang yan Gu ya Yu Dong Wei Pei Zhang Hong Gao Fuli Li Shaanxi Key Laboratory of Qua.l~tum h~formation and Qu~mtum Optoelectronic Devices School of Science. Xi＇m~ lia.otong University Xi＇an 710049 Chim

We demonstrate the generation of non-classical photon pairs in a warm S-Rb atomic vapor （＇ell with no buffer gas or polarization preserving coatings via spontaneous four-wave mixing. We obtain the photon pairs with a 1/e correlation time of 40 ns and the violation of Cauchy-Sehwartz inequality by a factor of 23 - 3. This provides a convenient and efficient method to generate photon pair sources based on an atomic ensemble.

关键词： Efficient generation of non-classical photon pairs in a hot atomic ensemble

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Precursor For Enantioselective Synthesis of Mesitylenesulfinamide

Precursor For Enantioselective Synthesis of Mesitylenesulfin...

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中国化学会第28届学术年会

作者： LOU,ya-zhoua SUN,Xiao-Xiaa* HU,Yub LI,lia a) Jiangxi Key Laboratory of Organic Chemistry,Jiangxi Science and Technology Normal University,Nanchang 330013,People''s Republic of China b) Experimental Chemistry Center,Nanchang University,Nanchang 330031,People''s Republic of China

N-Sulfinyl imines are versatile intermediates in the asymmetric synthesis of chiral amines such as α-branched amines,α,β-dibranched amines,α-and β-amino acids,aziridines,and α-and β-aminophosphonic *** N-p-toluenesulfinyl imines have been the major focus of these synthetic studies,due to substantial differences in their steric and electronic properties,the reactivities between them are *** here we described the synthesis of a novel enantiomerically pure mesitylenesulfinamide.

关键词： mesitylenesulfinamide chiral amines synthesis

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Host cell apoptosis induced by infection with duck swollen head hemorrhagic disease virus

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Progress in Natural Science:Materials International 2009年第1期19卷 47-53页

作者： Chuanfeng lia,Anchun Cheng a,b,Mingshu Wang a,b,c,Chanjuan Shena,Na Zhanga,Yi Zhou a,Dekang Zhu a,b,Qihui Luo a,Renyong Jiaa,Xiaoyue Chen a,b a Avian Disease Research Center,College of Veterinary Medicine of Sichuan Agricultural University,ya’an 625014,China b Key Laboratory of Animal Disease and Human Health of Sichuan Province,ya’an 625014,China c College of Life Science and Technology of Southwest University for Nationalities,Chengdu 610041,China Avian Disease Research Center College of Veterinary Medicine of Sichuan Agricultural University Ya’an 625014 China Key Laboratory of Animal Disease and Human Health of Sichuan Province Ya’an 625014 China College of Life Science and Technology of Southwest University for Nationalities Chengdu 610041 China

This study aimed to examine the host cell apoptosis in the tissues of Peking ducks infected with duck swollen head hemorrhagic disease virus(DSHDV).The dynamic changes associated with apoptosis occurring in the internal tissues were evaluated at different time points postinoculation(PI) by performing hematoxylin and eosin(HE) staining,followed by light microscopy,terminal deoxynucleotidyl transferase dUTP nick-end labeling(TUNEL) assay,and transmission electron microscopy(TEM).The results showed that DSHDV infection could induce apoptosis in host cells,including those of the bursa of Fabricius(BF),thymus,spleen,liver,intestinal tract,kidney,and *** apoptotic index(AI) values increased with time from 2 to 72 h PI,and the highest values were recorded at 72 h ***,cell death due to classic necrosis was observed in the dying or deceased ducks after 72 h *** conclusion,host cell apoptosis can be induced by DSHDV and may play an important role in the pathogenesis of duck viral swollen head hemorrhagic disease(DVSHD).

关键词： Duck swollen head hemorrhagic disease virus(DSHDV) Terminal deoxynucleotidyl transferase dUTP nick-end labeling(TUNEL) Host cell Apoptosis

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中医教育家罗元恺教育思想研究【下】

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中华医学教育探索杂志 2011年第6期10卷 641-644页

作者：廖雅琪罗颂平王燕广州中医药大学 510405

罗元恺躬身亲问中医奥秘，铁肩担道义办中医教育，博学笃行成教育家。他的教育思想是我国高等中医教育发展史中宝贵的精神财富，为21世纪高等中医教育的改革与发展带来深远启示。

关键词：中医教育家罗元恺教育思想

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