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Polymer Features in Crystallization

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Chinese Journal of Polymer Science 2022年第6期40卷 545-555页

作者： wen-Bing Hu State Key Lab of Coordination Chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

This review firstly gives an overview on the importance of crystallization in natural and synthetic polymers/*** it introduces the typical features that have been raised by chain-like macromolecules in crystallization,including anisotropic interactions in the thermodynamic driving forces,chain folding in the crystal morphologies,chemical confinement in the copolymer crystallization,and mechanical enhancement in the stretching *** features separately cover the thermodynamics and the kinetics of polymer crystallization,as well as the crystallinity and the mechanical properties of semicrystalline *** review ends up with how these features enhance specific functions of crystalline polymers,which demonstrates polymer crystallization as a challenging yet promising field in the future.

关键词： Crystallization Macromolecules Property Function

Ground-0 Axioms *** Principles and Second Law:From the Geometry of Light and Logic of Photon to Mind-Light-Matter Unity-AI&QI

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IEEE/CAA Journal of Automatica Sinica 2021年第3期8卷 534-553页

作者： wen-Ran Zhang Department of Computer Science Georgia Southern UniversityStatesboroGA 30460 USA

Without the geometry of light and logic of photon,observer-observability forms a paradox in modern science,truthequilibrium finds no unification,and mind-light-matter unity is unreachable in ***,quantum mechanics has been shrouded with mysteries preventing itself from reaching definable causality for a general purpose analytical quantum computing ***-0 Axioms are introduced as an equilibrium-based,dynamic,bipolar set-theoretic unification of the first principles of science and the second law of *** literatures are critically reviewed to justify the self-evident nature of Ground-0 Axioms.A historical misinterpretation by the founding fathers of quantum mechanics is identified and *** disproves spacetime geometries(including but not limited to Euclidean and Hilbert spaces)as the geometries of light and truth-based logics(including but not limited to bra-ket quantum logic)as the logics of *** with logically definable causality and Dirac 3-polarizer experiment,bipolar quantum geometry(BQG)and bipolar dynamic logic(BDL)are identified as the geometry of light and the logic of photon,respectively,and wave-particle complementarity is shown less fundamental than bipolar *** a result,Ground-0 Axioms lead to a geometrical and logical illumination of the quantum and classical worlds as well as the physical and mental *** logical resolutions to the EPR and Schr?dinger’s cat paradoxes,an analytical quantum computing paradigm named quantum intelligence(QI)is *** is shown that QI makes mind-light-matter unity and quantum-digital compatibility logically reachable for quantumneuro-fuzzy AI-machinery with groundbreaking *** is contended that Ground-0 Axioms open a new era of science and philosophy—the era of mind-light-matter unity in which humanlevel white-box AI&QI is logically prompted to join Einstein’s grand unification to foster major scientific advances.

关键词： Analytical quantum computing bipolar fuzzy sets bipolar quantum agents business intelligence cognitive neuroscience dynamic equilibrium Einstein-Bohr debate information conservational computing/cryptography computational psychiatry international relations logically definable causality quantum intelligence quantum-neuro-fuzzy AI human level AI&QI quantum superposition/entanglement white-box brain model

基于标准化施工的高速公路重难点施工技术研究

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价值工程 2025年第1期44卷 22-25页

作者：毕文芬广东冠粤路桥有限公司广州511400

高速公路施工周期一般都较长,尤其是在涉及到有非常规结构时,为满足施工精度要求,其造价和施工周期都会相应增加。为了更好地满足施工现场对于建设周期和工程造价的需求,决定采用标准化设计、精细化施工的理念,对施工现场进行统一管理... 详细信息

高速公路施工周期一般都较长,尤其是在涉及到有非常规结构时,为满足施工精度要求,其造价和施工周期都会相应增加。为了更好地满足施工现场对于建设周期和工程造价的需求,决定采用标准化设计、精细化施工的理念,对施工现场进行统一管理。本文以广东省某高速公路施工为例,其重难点问题包括特殊路基以及桥梁的高墩,采用标准化设计后,进行模板统一。结果证实,进行标准化施工后,其施工质量保证率、施工工期以及造价都得到相应的节约。

关键词：标准化施工高速公路特殊路基高墩

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Experimental Study on Geometry Characteristics of Turbulent Premixed Flames for Natural Gas/Air Mixtures

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Journal of Thermal Science 2025年第1期 268-282页

作者： ZHENG Weilin WANG Qijiao XIAO Huahua CHEN Xiaoxiao XIE Fan ZENG wen Liaoning Key Lab of Advanced Test Technology for Aerospace Propulsion System Shenyang Aerospace University State Key Laboratory of Fire Science University of science and Technology of China AVIC Shenyang Aircraft Design and Research Institute

In this study,focusing on the geometry characteristics of spherical expanding flame,the turbulent premixed flames of natural gas/air mixtures were investigated in a fan-stirred turbulent *** effects of initial temperature（T=300-400 K）,initial pressure（P=0.1-0.3 MPa）,turbulence intensity（u'=1.0-2.7 m/s）,oxygen volumetric percentage(φ（O2）=15%-21%) and carbon dioxide volumetric percentage(φ（CO2）=0-20%)were delved *** flame profile under the Cartesian coordinate system was derived from the schlieren images taken by the high-speed ***,from both macroscopic and microscopic perspectives,the influence of experimental conditions on the flame geometry characteristics was explored through flame front extraction,wavelet decomposition and network *** results demonstrate that for significant flame wrinkling,changes in species concentrations and turbulence intensity have more pronounced effects on the flame wrinkling *** wrinkling of the flame front maintains a certain degree of similarity,as evidenced by the locally concentrated distribution of the angles of the maximum fluctuation *** disturbance energy under large-scale（D6-D8） disturbances exhibits relatively high values with a similar trend,exerting a significant impact on the geometry characteristics of the flame *** peaks of correlation degree are scattered either with the decomposition scale or the development of flame radius,indicating no linear correlation between different detail ***,the probability distribution of node degrees in key wrinkled regions exhibits different trends with that of large-scale wrinkling and disturbance energy,especially with changes in initial *** occurs because the number of key wrinkles varies based on the perturbation's strength or the region's ***,an increase in the fluctuation frequency of the flame's local radius may not necessarily lead to an increase in the number of key folded regions.

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高频超声下老年女性腓肠肌形态参数与身体活动能力的相关性分析

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中国组织工程研究 2025年第5期29卷 1058-1063页

作者：温子星徐欣朱胜群上海杉达学院国际医学技术学院上海市201209 上海师范大学天华学院健康学院上海市201815

背景:高频超声技术的应用为老年人骨骼肌形态的精准评估提供了有效工具,但获取的骨骼肌形态参数与身体活动能力之间的关联性尚不明确。目的:探究高频超声成像技术下老年女性腓肠肌形态学参数与身体活动能力的相关性,进而发现老年人身体... 详细信息

背景:高频超声技术的应用为老年人骨骼肌形态的精准评估提供了有效工具,但获取的骨骼肌形态参数与身体活动能力之间的关联性尚不明确。目的:探究高频超声成像技术下老年女性腓肠肌形态学参数与身体活动能力的相关性,进而发现老年人身体活动能力的有效预测指标。方法:于上海杉达学院周边社区招募年龄>60周岁,具有独立活动能力的老年女性受试者59例,采集受试者腓肠肌高频超声图像,获取相关参数:包括肌肉厚度、肌纤维长度、羽状角和肌纤维长度/肌肉厚度(fiber length/muscle thickness,Lf/Tm)指数;并进行身体活动能力测试:包括10 m步行、计时起立行走、30 s坐站和握力的测试,对各形态参数和身体活动能力测试指标进行相关性分析。结果与结论:①各骨骼肌形态参数间均存在显著相关性(P<0.05);②羽状角与10 m步行测试结果呈负相关(r=-0.35,P<0.05),与计时起立行走测试结果呈正相关(r=0.32,P<0.05);③Lf/Tm指数与10 m步行测试、握力测试结果呈正相关(r=0.39,P<0.01;r=0.30,P<0.05),与计时起立行走测试结果呈负相关(r=-0.32,P<0.05);④结果表明:腓肠肌羽状角和Lf/Tm指数与老年女性身体活动能力表现出了较好的相关性,可作为身体活动能力预测的有效指标。

关键词：老年女性高频成像身体活动能力骨骼肌形态 10 m步行 Lf/Tm指数

Mechanical Properties of Railway High-strength Manufactured Sand Concrete:Typical Lithology,Stone Powder Content and Strength Grade

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期 194-203页

作者：王振李化建 HUANG Fali YANG Zhiqiang wen Jiaxin SHI Henan Railway Engineering Research Institute China Academy of Railway Science Corporation Limited State Key Laboratory for Track Technology of High-Speed Railway

In order to achieve the large-scale application of manufactured sand in railway high-strength concrete structure,a series of high-strength manufactured sand concrete (HMC) are prepared by taking the manufactured sand lithology (tuff,limestone,basalt,granite),stone powder content (0,5%,10%,15%) and concrete strength grade (C60,C80,C100) as *** evolution of mechanical properties of HMC and the correlation between cubic compressive strength and other mechanical properties are *** to river sand,manufactured sand enhances the cubic compressive strength,axial compressive strength and elastic modulus of concrete,while its potential microcracks weaken the flexural strength and splitting tensile strength of *** powder content displays both positive and negative effects on mechanical properties of HMC,and the stone powder content is suggested to be less than 10%.The empirical formulas between cubic compressive strength and other mechanical properties are proposed.

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A review of high-strength nanolaminates and evaluation of their properties

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Journal of Materials Science & Technology 2020年第15期47卷 215-244页

作者： Mohammad Nasim Yuncang Li Ming wen Cuie wen School of Engineering RMIT UniversityMelbourneVictoria3001Australia State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals Kunming Institute of Precious MetalsKunming650106China

Nanolaminates are composed of nanoscale-thick alternating layers of different materials and their properties are dependent on the individual layers,the layer thickness and the interfaces between the *** composed of cubic crystal structured metals are usually ductile compared to nanolaminates containing hexagonal crystal structured *** properties such as strength and hardness of nanolaminates increase with a decrease in individual layer thickness down to a few nanometers and they become independent when the thickness of individual layers is less than a couple of *** review provides a detailed analysis of the effects of individual layer thickness and the interface structures on the strength and the strengthening mecha nisms of nanolaminates,their ductility and fracture behavior in terms of structural variations including grain morphologies,nanotwins,amorphous phases and crystal structures of the *** principles for designing nanolaminates with exceptionally high mechanical and physical properties and their fabrication are also *** contradictory issues such as strengthening mechanisms,elastic modulus dependency on individual layer thickness and the effect of a thin amorphous layer on the strength are *** review also provides future research directions in designing the high-strength nanolaminates that will facilitate practical engineering applications through analyzing up-to-date research efforts.

关键词： Nanolaminates Mechanical properties Physical properties Deformation mechanisms

Shape-dependent hydrogen generation performance of Pt Pd bimetallic co-catalyst coupled with C_(3)N_(4)photocatalyst

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Rare Metals 2021年第12期40卷 3554-3560页

作者： wen-wen Liu Jun Pan Ren-Fu Peng College of Physical Science and Engineering Yichun UniversityYichun 336000China State Key Laboratory for Powder Metallurgy Central South UniversityChangsha 410083China

The shape-dependent performance of metal cocatalysts in photocatalysis has been one of the research focal points in recent *** this study,Pt Pd/C_(3)N_(4)hybrid structures were constructed to reveal the effect of the shape of the Pt Pd bimetallic co-catalyst on the performance of photocatalytic hydrogen *** Pd nanocubes(NCs)and nanotetrahedrons(NTs)were sequentially deposited in situ on the surface of C_(3)N_(4)nanosheets,establishing a strong contact interface to ensure the smooth transfer of photoinduced ***-visible(UV-Vis)diffuse reflectance spectroscopy and photoelectrochemical experiments revealed that the Pt Pd NCs/C_(3)N_(4)photocatalyst had comparable light absorption ability and equivalent carrier separation and transfer efficiency in comparison with the Pt Pd NTs/C_(3)N_(4)photocatalyst,which excluded the influence of these factors on shape-dependent *** photocatalytic hydrogen generation results indicate that the hydrogen generation rate of the Pt Pd NCs/C_(3)N_(4)photocatalyst is 1.33 times higher than that of the Pt Pd NTs/C_(3)N_(4)photocatalyst,demonstrating that the cubic Pt Pd bimetallic co-catalyst is more conducive to hydrogen generation compared to the tetrahedral Pt Pd bimetallic co-catalyst.

关键词： PtPd bimetallic co-catalyst C_(3)N_(4) Shape Hydrogen generation Photocatalyst

Numerical simulations of multi-layer-liquid sloshing by multiphase MPS method

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Journal of Hydrodynamics 2021年第5期33卷 938-949页

作者： Xiao wen Wei-wen Zhao De-cheng Wan Computational Marine Hydrodynamics Lab(CMHL) School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

In this paper,a multiphase moving particle semi-implicit(MPS)method is developed by introduction of various multiphase models into the original MPS method for single-phase flows,and is then applied to the numerical simulations of two-layer-liquid and three-layer-liquid sloshing in a 2-D rectangular tank under different external *** validate the accuracy of the present multiphase MPS method,the qualitative and quantitative results,including wave profiles,interface elevations and impact pressures,are compared with experimental data and other numerical results,which show a good *** particular,the evolutions of free surface and phase interfaces are compared and an obvious discrepancy is found,indicating that the phase interfaces may suffer from complex deformations while the free surface keeps relatively ***,the different modes of phase interface are observed under different excitation ***,the violent sloshing of a three-layer-liquid system is simulated and the phenomenon of internal wave breaking is well captured,which mainly benefitted from the Lagrangian basis of MPS method and its advantage in multiphase flows with complex ***,the three-layer-liquid sloshing with a vertical baffle are simulated to investigate the suppressing effect of baffle on multi-layer-liquid sloshing.

关键词： Moving particle semi-implicit(MPS) multiphase flows multi-layer-liquid liquid sloshing