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钢渣粉与硅灰复掺水泥基材料的流变、早期水化热与强度

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长江科学院院报 2024年第6期41卷 164-170页

作者：马超姚兆龙杨钊王新龙蒋道东中交第二航务工程局武汉430100 交通运输行业交通基础设施智能制造技术研发中心武汉430100 长大桥梁建设施工技术交通行业重点实验室武汉431400

为缓解大量存在且利用率很低的钢渣处理难题,将其研磨成微粉置换水泥,并掺入硅灰形成一种兼顾力学性能、绿色低碳水泥基材料。基于不同配比的复掺水泥基材料体系的流变行为、早期水化热、强度与吸水率试验研究,主要结果如下:钢渣粉颗粒... 详细信息

为缓解大量存在且利用率很低的钢渣处理难题,将其研磨成微粉置换水泥,并掺入硅灰形成一种兼顾力学性能、绿色低碳水泥基材料。基于不同配比的复掺水泥基材料体系的流变行为、早期水化热、强度与吸水率试验研究,主要结果如下:钢渣粉颗粒微形貌棱角与片状较少,替代15%水泥时可有效改善基体稠度,略微降低强度,并显著降低早期水化放热(降幅8.8%),有利于控制早期温度裂缝。复掺硅灰可有效降低材料塑性黏度与泵送压力,对需要长距离泵送的大体积混凝土或高性能混凝土,硅灰掺量可控制在5%以内。且硅灰空间填充效应与火山灰反应会增强材料密实性,显著提高强度。综上,复掺15%钢渣粉和5%硅灰的水泥基材料,不仅可以改善泵送性能,提升强度和耐久性,还能降低早期水化放热量,具有良好的工程应用前景。

关键词：钢渣粉硅灰流变早期水化热强度吸水率

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Interaction Mechanism of the Parametrically Excited Solitons

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Chinese Physics Letters 1998年第12期15卷 859-861页

作者： wang xin-long Institute of Acoustics and State Key Laboratory of Modern Acoustics Nanjing UniversityNanjing 210093

The parametrically excited solitons manifest themselves with many distinct particle-like *** the internal dynamics of the soliton-soliton interactions is explored both analytically and *** results confirm the attraction between polarity-like solitons and the repulsion between opposite polarity *** attraction can make a pair of like polarity solitons form a standing(or oscillating)bound ***,multisolitons in an unbounded waveguide would asymptotically develop into an array of mutually independent standing soliton(s)or/and the bound state(s).It is shown that the bound state has two unidirectional momenta flowing toward the symmetric center,and thus the solitons do not perform the collisions in the classical *** is further demonstrated that the observed periodic“collisions”are actually due to the dissipative-induced collapses and the parametric recreations of solitons.

关键词： soliton solitons polarity

Dynamics of Soliton-Soliton Interactions in Parametrically-Driven Systems

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Chinese Physics Letters 1997年第2期14卷 109-112页

作者： wang xin-long Institute of Acoustics Nanjing UniversityNanjing 210093

The parametrically-driven,damped nonlinear Schrodinger equation is numerically investigated and the parameter regions for the double-solitons of like polarity are *** simulations of the soliton evolution in the parameter regions are in good agreement with the experimental *** computations also reveal that the“particles number”,momentum and energy are no more constants but vary in a periodic fashion in the system.

关键词： Soliton soliton momentum

Synchronous Spatiotemporal Oscillation Between Two Parametrically Excited Bound States

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Chinese Physics Letters 1998年第4期15卷 275-277页

作者： wang xin-long WEI Rong-jue Institute of Acoustics Nanjing UniversityNanjing 210093

The bound state is one of the elemental localized excitations in a parametrically driven *** the molecule-like structure,the two identical solitons can interact with each other as a classic“oscillator”.Here the dynamics of two interacting bound states is explored by both experiment and *** experiment reveals several important dynamical features,in particular,the polarity ordering rule that determines the stability of a compound structure,and the synchronization in the coupling pairs of opposite polarity which leads to a symmetric and harmonic spatiotemporal *** these interesting phenomena are numerically simulated with the parametrically driven,damped nonlinear Schröding equation,and their nonlinear dynamics is further concluded as a stability diagram in parameter space.

关键词： oscillation space polarity

X-ray Crystal Structure and Characterization of Tetra-vanadyl Capped Highly Reduced Polyoxometalate Anion [PMo_5~ⅥMo_7~ⅤO_(40)(V~ⅣO)_4]^(2-)

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Chemical Research in Chinese Universities 2006年第1期22卷 17-20页

作者： CHANG Song QIN Chao wang xin-long LI Yang-guang wang En-bo Institute of Polyoxometalate Chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 P. R. China

A novel polyoxometalate [H3O][PMo5^ⅥMo7^ⅤO40 （V^ⅣO）4]·6Py （Py = pyridine） was synthesized and characterized by IR spectrometry, TG and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic space group（C2/m） with α=1.3680（3） nm, b=2.1740（4） nm, c=1.1630（2） nm, β= 118.62（3）°, V= 3. 0362 （10） nm^3, Z = 2, and Rt （wR2） = 0. 0772 （0. 2312）. The compound contains a highly reduced vanadylpoly-molybdophosphate polyoxometalate anion with a four-capped structure. The four {VO} units cap four opposite pits of the pseudo-Keggin core {PMo12O40}.

关键词： Highly reduced polyoxometalate anion Hydrothermal synthesis Four-capped Pseudo-Keggin core

Synthesis, Structure Characterization and Biological Activity of Layered Vanadium Oxides [NH_3(CH_2)_2NH(CH_2)_2NH_3][V_6O_(14)]

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Chemical Research in Chinese Universities 2005年第5期21卷 509-511页

作者： FU Ping-ping wang xin-long wang En-bo QIN Chao XU Lin Institute of Polyoxometalate Chemistry Department of Chemistry Northeast Normal University Changchun 130024 P. R. China China-Japan Union Hospital Jilin University Changchun 130024 P. R. China

A new layered vanadium oxide [ NH3 （ CH2 ）2NH（ CH2 ）2NH3 ] [ V6O14 ] （ compound 1 ） was synthesized and characterized by elemental analysis, IR spectrometry and single crystal X ray diffraction. The compound crystallizes ina monoclinic space group P2（1）/n with a = 1.0254（2） nm, b =0.6739（2） nm, c = 1.2400（2） nm, ,8 = 93.88 （ 3 ） °, V = 0. 8549 （ 3 ）nm^3, Z = 2, R1 = 0. 0366, wR2 = 0. 1038. Compound 1 consists of two-dimensional mixed-valence vanadium oxide layers parallelling to the bc plane. The anti-tumor activity of the compound was estimated in three human tumor cell lines in vitro.

关键词： Polyoxometalate,Vanadium oxide Crystal structure Anti-tumor activity

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稳压器喷淋阀常见故障分析及维修改进

阀门 2024年第8期 913-918页

作者：邓力丰王鑫龙邹志林中广核核电运营有限公司广东阳江529500

稳压器作为核电厂压力控制的核心设备,其喷淋阀(RCP001/002VP)在运行与维护过程中常遭遇多种故障,这些故障的处理多依赖于维修人员的技能和经验,不仅耗时费力,还可能影响设备的可靠性。本文针对某核电厂RCP001/002VP的常见故障进行了深... 详细信息

稳压器作为核电厂压力控制的核心设备,其喷淋阀(RCP001/002VP)在运行与维护过程中常遭遇多种故障,这些故障的处理多依赖于维修人员的技能和经验,不仅耗时费力,还可能影响设备的可靠性。本文针对某核电厂RCP001/002VP的常见故障进行了深入的分析与研究。首先,对弹簧偏移引发的抖动问题进行了探讨,并设计了一款嵌套式拉杆工具,该工具有效保证了弹簧在受压过程中的对中性,显著简化了维修步骤;其次,针对零位设置不当问题开发了一种零位定量设置工具,该工具提高了阀门密封性能的均匀性和一致性;最后,针对密封面磨损导致的内漏问题设计出一种弧形密封面研磨工具,该工具能够快速修复阀座密封面,有效恢复阀门的密封性能。经实践验证,这些专用工具的应用显著提高了现场工作效率和稳压器的可靠性,为核电厂的安全稳定运行提供了有力保障。

关键词：稳压器喷淋阀(RCP001/002VP) 故障专用工具维修改进

Ce(H_2O)_7Al(OH)_6Mo_6O_(18)·4H_2O: A New One-dimensional Zigzag Chainlike Structure of Anderson Cluster Linked by Cerium Ions

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Chemical Research in Chinese Universities 2005年第6期21卷 637-640页

作者： JIN Hua QI Yan-fei QIN Chao wang xin-long wang En-bo XU Lin Institute of Polyoxometalate Chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 P. R. China

A new cerium polyoxomolybdate { [Ce （ H2 O） 7 Al （ OH ） 6 Mo6 O18 ] · 4H20 } （ compound 1 ） was synthesized and characterized by X-ray diffraction analysis, elemental analysis, TG analysis and IR spectrometry. Compound 1 exhibits a zigzag chain-like structure, which is constructed from an Anderson type anion and rare earth metal, Ce（ Ⅲ ）. These 1-D chains are further extended into a 3-D network by the aid of muhipoint hydrogen-bonding interactions.

关键词： One-pot reaction Zigzag chain-like polymer Rare earth metal Polyoxometalate

Internal Subharmonic Resonance in Faraday Experiment

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Chinese Physics Letters 2000年第8期17卷 580-582页

作者： wang xin-long CHEN Yi-Huang WEI Rong-jue State Key Laboratory of Modern Acoustics and Institute of Acoustics Nanjing UniversityNanjing 210093 Department of Electronic Science and Engineering Nanjing UniversityNanjing 210093

The classical Faraday experiment is a tractable problem in nonlinear physics,and its rich spectrum of nonlinear phenomena has made it a prototype in studying nonlinear wave dynamics in *** we report the ob servation of a new type of subharmonic resonances which occurs at some smaller fractional frequencies,such asν/3,ν/4,andν/6,whereνis the forcing *** a result of these resonances,the lower-order surface-wave modes whose eigenfrequencies are close to the fractional frequencies participate into the wave *** theory involving quadratically nonlinear mode couplings shows that an already excited mode itself can act as a parametric source on the lower-order primary modes,thus leading to the cascading subharmonic resonances.

关键词： Faraday nonlinear fractional