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高乙烯含量VAE乳液的研究与生产

安徽化工 2024年第1期50卷 80-85页

作者：吴尚宋孟璐安徽皖维高新材料股份有限公司安徽巢湖238002

以聚乙烯醇(PVA1788、PVA0588)复配做保护胶体,醋酸乙烯酯及乙烯为单体,采用氧化还原法制备不同乙烯含量的VAE乳液。研究原料、聚合工艺和反应条件及加料方式对VAE乳液乙烯含量、固含量、粘度、玻璃化转变温度和相对分子质量的影响,考... 详细信息

以聚乙烯醇(PVA1788、PVA0588)复配做保护胶体,醋酸乙烯酯及乙烯为单体,采用氧化还原法制备不同乙烯含量的VAE乳液。研究原料、聚合工艺和反应条件及加料方式对VAE乳液乙烯含量、固含量、粘度、玻璃化转变温度和相对分子质量的影响,考查改性PVA对VAE乳液耐水性能的影响。结果表明,最佳初始反应温度为65℃,后期温度为70℃~85℃,最佳乳化剂含量为4%,最佳引发剂用量为2.5%,VAE乳液的乙烯含量为9%~23%,使用疏水基改性PVA代替部分保护胶体,乳液耐水性明显提高。

关键词：醋酸乙烯酯乙烯高乙烯含量VAE乳液改性PVA

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城市与自然之间嘉兴种子艺术中心

室内设计与装修 2024年第2期 24-27页

作者： B.L.u.E.建筑设计事务所 B.L.u.E.建筑设计事务所

种子艺术中心位于嘉兴市南湖区,距离市中心东侧10 km,处在城市与自然的过渡边界。项目定位为地产配套设施,近期作为附近社区的展示中心与零售空间,未来则活用为周边共享的邻里中心。艺术中心周围一半是农场与公园,一半是住宅与商业街,... 详细信息

种子艺术中心位于嘉兴市南湖区,距离市中心东侧10 km,处在城市与自然的过渡边界。项目定位为地产配套设施,近期作为附近社区的展示中心与零售空间,未来则活用为周边共享的邻里中心。艺术中心周围一半是农场与公园,一半是住宅与商业街,不同方位面向不同的景观与氛围,形成多元、生动的场所感。四周道路交会,人流聚集于此,是整个片区最具活力的核心点位。

关键词：邻里中心场所感嘉兴市南湖区配套设施商业街展示中心项目定位零售空间

Photoproduction of multi-meson final states–recent results from the Crystal-Barrel/TAPS experiment at ELSA-

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Chinese Physics C 2009年第12期33卷 1105-1112页

作者： u. Thoma HISKP Universitt Bonn Nussallee 14-16 53115 Bonn Germany

Multi-meson final states such as γp →pπ0π0 and γp →pπ0η have been investigated with the Crystal-Barrel/TAPS experiment at ELSA. Baryon cascades via △π and △η and also via higher mass baryon resonances are clearly observed. Based on this data and on data from other reactions a partial wave analysis has been performed from which partial decay widths of various N＊ and △＊ states into the different pπ0π0 and pπ0η decay channels have been determined, leading partly to unexpected results. In addition, polarisation observables have been investigated. The beam asymmetry X has been determined for both reactions and double polarisation data using a longitudinally polarised target and a circularly or linearly polarised photon beam has been taken. Given the angular coverage of the Crystal-Baxrel/TAPS experiment this data covers almost the full angular range and phase space. This data will provide new and important information for the partial wave analyses and bring us one step closer towards a complete experiment.

关键词： baryon spectroscopy photoproduction multi-meson final states polarisation observables

ADVANCED NICKEL-BASED AND NICKEL-IRON-BASED SuPERALLOYS FOR CIVIL ENGINEERING APPLICATIONS

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Acta Metallurgica Sinica(English Letters) 2005年第4期18卷 453-462页

作者： u. Brill ThyssenKrupp VDM GmbH 58791 Werdohl Germany

The use of high-temperature materials is especially important in power station construction, heating systems engineering, furnace industry, chemical and petrochemical industry, waste incineration plants, coal gasification plants and for flying gas turbines in civil and military aircrafts and helicopters. Particularly in recent years, the development of new processes and the drive to improve the economics of existing processes have increased the requirements significantly so that it is necessary to change from well-proven materials to new alloys. Hitherto, heat resistant ferritic steels sufficed in conventional power station constructions for temperatures up to 550℃ newly developed ferritic/martensitic steels provide sufficient strength up to about 600 - 620℃. In new processes, e.g. fluidized-bed combustion of coal, process temperatures up to 900℃ occur. However, this is not the upper limit, since in combustion engines, e.g. gas turbines. Material temperatures up to 1100℃ are reached locally. Similar development trends can also be identified in the petrochemical industry and in the heat treatment and furnace engineering. The advance to ever higher material temperatures now not only has the consequence of having to use materials with enhanced high-strength properties, considerable attention now also has to be given to their chemical stability in corrosive media. Therefore not only examples of the use of high-temperature alloys for practical applications will be given but also be contributed to some general rules for material selection with regard to their high-temperature strength and corrosion resistance.

关键词： nickel-based alloy high-temperature strength high-temperature corrosion resistance civil engineering application

miniSCIDOM: a scintillator-based tomograph for volumetric dose reconstruction of single laser-driven proton bunches

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High Power Laser Science and Engineering 2024年第2期12卷 41-50页

作者： A.Corvino M.Reimold E.Beyreuther F.-E.Brack F.Kroll J.Pawelke J.D.Schilz M.Schneider u.Schramm M.E.P.umlandt K.Zeil T.Ziegler J.Metzkes-Ng Helmholtz-Zentrum Dresden–Rossendorf DresdenGermany Technische universität Dresden DresdenGermany OncoRay–National Center for Radiation Research in Oncology Faculty of Medicine and University Hospital Carl Gustav CarusTUD Dresden University of TechnologyHelmholtz-Zentrum Dresden–RossendorfDresdenGermany Current affiliation:Institut Curie UniversitéPSLCNRS UMR3347OrsayFrance Current affiliation:universitätsklinikum Freiburg FreiburgGermany

Laser plasma accelerators(LPAs)enable the generation of intense and short proton bunches on a micrometre scale,thus offering new experimental capabilities to research fields such as ultra-high dose rate radiobiology or material *** spectrally broadband,laser-accelerated proton bunches allow for tailored volumetric dose deposition in a sample via single bunches to excite or probe specific sample *** rising number of such experiments indicates a need for diagnostics providing spatially resolved characterization of dose distributions with volumes of approximately 1 cm^(3) for single proton bunches to allow for fast online *** we present the scintillator-based miniSCIDOM detector for online single-bunch tomographic reconstruction of dose distributions in volumes of up to approximately 1 cm^(3).The detector achieves a spatial resolution below 500μm and a sensitivity of 100 *** detector performance is tested at a proton therapy cyclotron and an LPA proton *** experiments’primary focus is the characterization of the scintillator’s ionization quenching behaviour.

关键词： beam monitoring detectors laser-driven proton beams scintillator-based diagnostics ultra-high dose rate

护理人员对医院护理科研学术氛围感知的质性研究

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International Journal of Nursing Sciences 2024年第2期11卷 233-240页

作者： Ejercito Mangawa Balay-odao Jonas Preposi Cruz Joseph uAlmazan Department of Medicine School of MedicineNazarbayev UniversityAstanaKazakhstan

目的医疗机构面临的挑战是建立一种促进护理科研发展的组织文化。护理科研的建设一直被认为是护理学科进步的重要组成部分。因此,本研究描述了护士对所在医院护理科研学术氛围的看法。方法采用半结构式个人访谈法收集资料。于2022年12月... 详细信息

目的医疗机构面临的挑战是建立一种促进护理科研发展的组织文化。护理科研的建设一直被认为是护理学科进步的重要组成部分。因此,本研究描述了护士对所在医院护理科研学术氛围的看法。方法采用半结构式个人访谈法收集资料。于2022年12月至2023年4月,在菲律宾东部1所医院选取17名护士参与研究。采用Braun和Clarke主题分析法对数据进行分析。结果共提炼出3个主题及7个副主题:影响护士的行为和绩效(帮助获取研究信息和学习、灵活性和适应性、护士之间的合作与沟通),影响护士的研究参与(领导策略、培训与专业发展),以及影响医院对变化的适应(组织绩效与成功、护士参与和工作满意度)。结论积极的护理研究文化对塑造护士的行为和绩效、参与护理研究以及医院对变化的适应具有至关重要的作用,因此对医院护理研究文化的益处提供了支持。总之,提炼出的主题有助于护理管理者更深入地了解护理研究文化对医疗保健系统各层面的影响。

关键词：文化医院护理人员菲律宾定性研究研究

Biological and mechanical investigation of novel flax/silk protein-based nanofibrous scaffold for bone regeneration

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Progress in Natural Science:Materials International 2022年第4期32卷 443-455页

作者： M.Rama u.Vijayalakshmi Department of Chemistry School of Advanced Sciences Vellore Institute of Technology

The process of bone tissue regeneration involves an intricate network of a biological macromolecules that includes proteins and peptides to support stimulation and healing response. Here, we have fabricated a novel flaxseed/silk fibroin based(dual protein) composite nanofibers using β-TCP to improve the biological properties and promote cartilage tissue regeneration along with a controllable rate of biodegradation. The physiochemical properties of PVA/β-TCP/FP:SF were characterized by FTIR, XRD, SEM, porosity, contact angle measurements and mechanical evaluation etc. This study demonstrates the biological performance of the developed nanofibers by using hemocompatibility, biodegradation ability, and apatite deposition in stimulated body fluid. Moreover, the cell viability assay was performed on MG-63 osteoblast cells and long-term antibacterial rate against E. coli and S. aureus was analysed. Docking results of flax protein and silk fibroin protein further confirmed the stable modes of intramolecular bonding and the most stable electrostatic values using theoretical calculations. Taken together,the experimental results proved that the dual protein-based fibrous scaffold was found to be up-regulated in terms of biological activity with enhanced cell adhesion and proliferation.

关键词： Flax protein Silk fibroin β-TCP Electrospinning Docking Bone regeneration

Synthesis and Crystal Structure of Trans-bis(acesulfamato-O)tetraaquazinc(Ⅱ)

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Chinese Journal of Structural Chemistry 2010年第7期29卷 1047-1050页

作者： SAHIN Onur ICBuDAK Hasan B(u|¨)Y(u|¨)KG(u|¨)NG(O|¨)R Orhan Department of Physics Faculty of Arts and SciencesOndokuz Mayis UniversitySamsunTurkey Department of Chemistry Faculty of Arts and SciencesOndokuz Mayis UniversitySamsunTurkey

The title compound, trans-bis（acesulfamato-O）tetraaquazinc（Ⅱ）（I, C8H16N2O12S2Zn）, crystallizes in the triclinic system, space group P1 with a = 5.1638（5）, b = 8.5338（9）, c = 9.9583（9）A, α = 74.325（8）, β = 81.112（7）, γ = 75.800（8）°, V= 407.77（7） A3, Z = 1, F（000） = 236, Rint = 0.085, T= 296 K, the final R = 0.029 and wR = 0.078 for 1832 observed reflections with I〉 2σ（0. The ZnⅡcentre resides on a centre of symmetry and has a distorted octahedral geometry. The basal plane is defined by two carbonyl O atoms of two monodentate trans-oriented acesulfamato ligands and two trans-aqua ligands. The axial positions in the octahedron are occupied by two trans-aqua ligands. Intermolecular O-H…O hydrogen bonds produce R22（8） and R22（16） rings, which lead to two- dimensional polymeric chains.

关键词： crystal structure zinc(Ⅱ) octahedral complex hydrogen bonds

Optimized design of collector topology for offshore wind farm based on ant colony optimization with multiple travelling salesman problem

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Journal of Modern Power Systems and Clean Energy 2018年第6期6卷 1181-1192页

作者： Ramu SRIKAKuLAPu Vinatha u Department of Electrical and Electronics Engineering National Institute of Technology Karnataka

A layout of the offshore wind farm(OSWF)plays a vital role in its capital cost of installation. One of the major contributions in the installation cost is electrical collector system(ECS). ECS includes: submarine cables,number of wind turbines(WTs), offshore platforms etc. By considering the above mentioned problem having an optimized design of OSWF provides the better feasibility in terms of economic considerations. This paper explains the methodology for optimized designing of ECS. The proposed methodology is based on combined elitist ant colony optimization and multiple travelling salesman *** objective is to minimize the length of submarine cable connected between WTs and to minimize the wake loss in the wind farm in order to reduce the cost of cable and cable power loss. The methodology is applied on North Hoyle and Horns Rev OSWFs connected with 30 and 80 WTs respectively and the results are presented.

关键词： Ant colony optimization Offshore wind farm Multiple travelling salesman problem Wake effect Wake loss