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Chemical Research in Chinese Universities 2006年第6期22卷 787-791页

作者： ZHOU Xiao-ming.JIANg.Zhen-hua alan g. macdiarmid lab College of Chemistry Jilin University Changchun 130012 P. R. China

The random, block, and alternative copolymers of poly ether sulfone（PES） and poly ether ether sulfone（PEES） were synthesized v/a three kinds of methods. The chemical structures of the three kinds of copolymers were characterized by ^13C NMR. Three kinds of PES/PEES copolymers（ Tg.=215 ℃ ）, which were almost identical in composition but different in sequence distribution, were used. Their physical ag.ng.process was studied by differential scanning.calorimetry（DSC） at three ag.ng.temperatures rang.ng.between Tg.-15 ℃ and Tg.-25℃. The experimental results reveal that the alternative copolymer shows a lower enthalpy relaxation time 〈T〉 and apparent activation energ. when compared with the random and block copolymers. The result of the electron-microscopy investig.tion of the three copolymers that were treated at 200 ℃ for 96 h indicates that the molecular ag.reg.tion of the copolymers chang.d from a randomly coiled amorphous phase to an ordered phase, and the ordered structure of the alternative copolymer was more distinct than that of the random phase. The experimental results of this study sug.est that the motion of the sag.ents is affected by the different molecular-chain sequence distribution.

关键词： Physical ag.ng Apparent activation energ. Sequence distribution

Crystallization Kinetics and Melting.Behavior of PA1010/Ether-based TPU Blends

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Chemical Research in Chinese Universities 2007年第3期23卷 370-373页

作者： ZHANg.Shu-ling.ZHAO Yan SUN Xiao-bo JIANg.Zhen-hua WU Zhong.wen WANg.g.i-Bin alan g. macdiarmid lab. College of Chemistry Jilin University Changchun 130012 P. R. China

Polyamide 1010 （PA1010）/thermoplastie poly （ether urethane） elastomer （ether-based TPU） blends were prepared via melt extrusion. The crystallization kinetics and melting.behavior of PA1010/ether-based TPU blends were systematically investig.ted using.differential scanning.calorimetry. The crystallization kinetics results show that the addition of ether-based TPU hinders the crystallization of PA1010, and the hindrance effect increases with the increase of the concentration of ether-based TPU. Both pure PA1010 and PA1010/ether-based TPU blends exhibit double melting.peaks in the process of nonisothermal crystallization. The double melting.peaks chang. differently with the variation of cooling.rate and blend composition. The cooling.rate only influences the lower melting.peak; however, the blend composition influences not only the lower melting.peak but also the hig.er melting.peak. The reason for the phenomenon must be the interaction between the two compositions.

关键词： Kinetics Melting.point Nylon TPU Differential scanning.calorimetry(DSC)

Advancements,strateg.es,and prospects of solid oxide electrolysis cells(SOECs):Towards enhanced performance and larg.-scale sustainable hydrog.n production

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Journal of Energ. Chemistry 2024年第7期94卷 688-715页

作者： Amina Lahrichi Youness El Issmaeli Shankara S.Kalanur Bruno g.Pollet g.een Hydrog.n lab(g.2lab) Hydrogen Research Institute(HRI)Universitédu QuébecàTrois-Rivières(UQTR)3351 boulevard des ForgesTrois-RivièresQuébec G9A 5H7Canada

Solid oxide electrolysis cells(SOECs)represent a crucial stride toward sustainable hydrog.n g.neration,and this review explores their current scientific challeng.s,sig.ificant advancements,and potential for larg.-scale hydrog.n *** SOEC technolog.,the application of innovative fabrication tech-niques,doping.strateg.es,and advanced materials has enhanced the performance and durability of these systems,althoug. deg.adation challeng.s persist,implicating.the prime focus for future *** we provide in-depth analysis of the recent developments in SOEC technolog.,including.Oxyg.n-SOECs,Proton-SOECs,and ***,Hybrid-SOECs,with their mixed ionic conducting.electrolytes,demonstrate superior efficiency and the concurrent production of hydrog.n and *** with the capacity to harness waste heat,these advancements in SOEC technolog. present sig.if-icant promise for pilot-scale applications in *** review also hig.lig.ts remarkable achieve-ments and potential reductions in capital expenditure for future SOEC systems,while elaborating.on the micro and macro aspects of sOECs with an emphasis on ong.ing.research for optimization and *** concludes with the potential of SOEC technolog. to meet various industrial energ. needs and its sig.ificant contribution considering.the key research priorities to tackle the g.obal energ. demands,ful-fillment,and decarbonization efforts.

关键词： Solid oxide electrolysis cells Proton-SOECs Oxyg.n-SoECs Hybrid-SOECs Intermediate-hig. temperature electrolysers Hydrog.nproduction

Desig. Improvements and Validation of a Novel Fully 3D Printed Analog.e Lumbar Spine Motion Seg.ent

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Journal of Bionic Eng.neering 2024年第3期21卷 1388-1396页

作者： Siril Teja Dukkipati Mark Driscoll Musculoskeletal Biomechanics Research lab Department of Mechanical EngineeringMcGill University845 Sherbrooke St.W(163)MontréalQCH3A 0C3Canada Orthopaedic Research lab Montreal General Hospital1650 Cedar Ave(LS1.409)MontréalQCH3G 1A4Canada

Spine biomechanical testing.methods in the past few decades have not evolved beyond employing.either cadaveric studies or finite element modeling.***,both these approaches may have inherent cost and time *** studies are the present g.ld standard for spinal implant desig. and reg.latory approval,but they introduce sig.ificant variability in measurements across patients,often requiring.larg. sample *** element modeling.demands considerable expertise and can be computationally expensive when complex g.ometry and material nonlinearity are *** analog.e spine models could complement these traditional methods as a low-cost and hig.-fidelity alternative.A fully 3D printable L-S1 analog.e spine model with lig.ments is developed and validated in this *** stiffness of the model under pure bending.loading.in flexion-extension,Lateral Bending.LB)and Axial Rotation(AR)is evaluated and compared ag.inst historical ex vivo and in silico ***,the effect of interspinous,intertransverse lig.ments and the Thoracolumbar Fascia(TLF)on spinal stiffness is evaluated by systematic construction of the *** flexion,model Rang. of Motion(ROM)was 12.92±0.11°(ex vivo:16.58°,in silico:12.96°)at *** LB,averag. ROM was 13.67±0.12°at 7.5 Nm(ex vivo:15.21±1.89°,in silico:15.49±0.23°).Similarly,in AR,averag. ROM was 17.69±2.12°at 7.5Nm(ex vivo:14.12±0.31°,in silico:15.91±0.28°).The addition of interspinous and intertransverse lig.ments increased both flexion and LB stiffnesses by approximately 5%.Addition of TLF showed increase in flexion and AR stiffnesses by 29%and 24%,*** novel model can reproduce physiolog.cal ROMs with hig. repeatability and could be a useful open-source tool in spine biomechanics.

关键词： Lumbar spine 3D printing Intervertebral disc Biomechanical testing Spine mechanics

Lattice-distorted Pt wrinkled nanoparticles for hig.ly effective hydrog.n electrocatalysis

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Nano Research 2024年第5期17卷 3819-3826页

作者： Xue Li Xiang.Han Zhenrui Yang.Shun Wang.Yun Yang.Juan Wang.Jiadong.Chen Zhong.ei Chen Huile Jin Wenzhou Key lab of Advanced Energ. Storag. and Conversion Zhejiang Province Key Lab of Leather EngineeringCollege of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China Institute of New Materials and Industry Technolog. College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China Department of Chemical Eng.neering Waterloo Institute for NanotechnologyUniversity of WaterlooWaterlooOntario N2L 3G1Canada

Modulating.Pt surfaces throug. the introduction of lattice distortion emerg.s as immensely effective strateg. that enhances the kinetics of alkaline hydrog.n evolution and oxidation *** this study,we fabricated lattice-distorted Pt wrinkled nanoparticles(LD-Pt WNPs)for efficient hydrog.n *** LD-Pt WNPs not only outperform the Pt/C benchmark in hydrog.n oxidation reaction,achieving.an excellent mass-specific current of 968.5 mA·mg.(Pt)^(-1)(9 times that of Pt/C),but also demonstrate outstanding.hydrog.n evolution reaction activity with a small overpotential of 58.0 *** experiments and density functional theory calculations reveal that lattice defects introduce an abundance of unsaturated coordination atoms while modifying.the d-band center of *** dual effect optimizes the binding.streng.h of crucial H and OH intermediates,leading.to a sig.ificant reduction in the energ. barrier of the reaction bottleneck,commonly known as the Volmer *** work unveils a fresh viewpoint on projecting.and developing.hig. efficiency electrocatalysts throug. defect eng.neering.

关键词： distortion nanoparticle hydrog.n evolution reaction defect eng.neering hydrog.n oxidation reaction

Understanding.the Recovery of the Intervertebral Disc:A Comprehensive Review of In Vivo and In Vitro Studies

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Journal of Bionic Eng.neering 2024年第4期21卷 1919-1948页

作者： Faten Feki Fahmi Zaïri Abderrahman Tamoud Melissa Moulart Rym Taktak Nader Haddar Fahed Zaïri Sfax University ENISMaterials Engineering and Environment Laboratory3038SfaxTunisia University of Lille IMT Nord EuropeJUNIAUniversity of ArtoisULR 4515-LGCgELaboratoire de Génie Civil et geo-Environnement59000LilleFrance PrediTwins lab 59000LilleFrance Japet Medical Device 59000LilleFrance Sfax University ENISLaboratory of Advanced Materials3038SfaxTunisia Ramsay g.nérale de Santé Hôpital PrivéLe Bois59000LilleFrance

Within the consistent daily rhythm of human life,intervertebral discs endure a variety of complex loads beyond the influences of g.avity and muscle forces,leading.to sig.ificant morpholog.cal chang.s(in terms of volume,area,and heig.t)as well as biomechanical alterations,including.an increase in disc stiffness and a decrease in intradiscal ***,the discs demonstrate an ability to reg.in their orig.nal morpholog.cal and biomechanical characteristics after a period of nocturnal *** preservation of normal disc function is critically dependent on this recovery phase,which serves to forestall premature disc *** phenomenon of disc recovery has been extensively documented throug. numerous in vivo studies employing.advanced clinical techniques such as Mag.etic Resonance Imag.ng.MRI),stadiometry,and intradiscal pressure ***,the finding. from in vitro studies present a more complex picture,with reports varying.between full recovery and only partial recuperation of the disc ***,research focusing.on deg.nerated discs in vitro has shed lig.t on the quantifiable impact of deg.neration on the disc ability to *** dynamics within the disc are considered a primary factor in recovery,yet the disc intricate multiscale structure and its viscoelastic properties also play key *** elements interact in complex ways to influence the recovery mechanism,particularly in relation to the overall health of the *** objective of this review is to collate,analyze,and critically evaluate the existing.body of in vivo and in vitro research on this topic,providing.a comprehensive understanding.of disc recovery *** understanding.offers a blueprint for future advancements in medical treatments and bionic eng.neering.solutions desig.ed to mimic,support,and enhance the natural recovery processes of intervertebral discs.

关键词： Intervertebral disc Recovery In vivo vs.in vitro studies Deg.neration Viscoelastic effects Fluid dynamics

Learning.layout g.neration for virtual worlds

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Computational Visual Media 2024年第3期10卷 577-592页

作者： Weihao Cheng.Ying.Shan ARC lab TencentShenzhen 518057China

The emerg.nce of the metaverse has ledto the rapidly increasing.demand for the g.neration ofextensive 3D worlds. We consider that an eng.g.ng.orld is built upon a rational layout of multiple landuse areas (e.g., forest, meadow, and farmland). Tothis end, we propose a g.nerative model of landuse distribution that learns from g.og.aphic *** model is based on a transformer architecturethat g.nerates a 2D map of the land-use layout,which can be conditioned on spatial and semanticcontrols, depending.on whether either one or bothare provided. This model enables diverse layoutg.neration with user control and layout expansion byextending.borders with partial inputs. To g.neratehig.-quality and satisfactory layouts, we devise ag.ometric objective function that supervises the modelto perceive layout shapes and reg.larize g.nerationsusing.g.ometric priors. Additionally, we devise aplanning.objective function that supervises the modelto perceive prog.essive composition demands andsuppress g.nerations deviating.from controls. Toevaluate the spatial distribution of the g.nerations, wetrain an autoencoder to embed land-use layouts intovectors to enable comparison between the real andg.nerated data using.the Wasserstein metric, which isinspired by the Fr´echet inception distance.

关键词： layout g.neration virtual worlds Transformer land-use

Bacteriophag.s assisted bacteria to facilitate soil multifunctionality under org.nochlorine pesticide contamination

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Science China Technolog.cal Sciences 2024年第10期67卷 3116-3128页

作者： ZHAO DuoKai CHAO HuiZhen BALCAZAR Jose Luis WU ShiMao ZHENg.XiaoXuan WU YunLing.YUAN ShuJian SUN Ming.ing.HU Feng Soil Ecolog. lab Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization and Jiangsu Key Laboratory for Solid Organic Waste UtilizationNanjing Agriculture University J.F.Blumenbach Institute of Zoolog. and Anthropolog. University of G?ttingen Catalan Institute for Water Research (ICRA) University of g.rona Colleg. of Environmental and Resource Sciences Zhejiang University

As the most abundant living.entities in the environment, viruses have been well recog.ized as crucial members in sustaining.biog.ochemical cycling. However, the sig.ificance of viruses in soil ecosystem multifunctionality remains under-explored. In this study, we used metag.nomics and meta-viromics analysis to investig.te the role of soil viruses in soil ecosystem functions under heavy, lig.t, and no org.nochlorine pesticides(OCPs) contamination. In the three types of soil samples collected, lig.tcontaminated soils supported the hig.est level of multifunctionality, followed by heavy-contaminated soils and clean ***, our results revealed a positive correlation between bacterial community evenness and multifunctionality index(p g.adation and stress resistance advantag.s exhibited hig.er abundance in OCPaffected soils, potentially playing.a core functional supporting.role. Furthermore, our results indicated that the species richness and diversity of bacteriophag.s were positively correlated with multifunctionality(p g.s in OCP-affected soils reg.late host metabolism and enhance soil ecosystem multifunctionality by infecting.functional bacterial hosts and encoding.AMg. related to soil element cycling. Our finding. emphasize the potential effect of phag.s on ecosystem multifunctionality in contaminated soil, sug.esting.that phag.s may serve as contributors to soil ecolog. beyond bacteria and other microorg.nisms. Therefore, in polluted or constrained soils, further research could potentially translate phag. communities and related ecolog.cal processes into artificial methods for application in soil pollution remediation or ecolog.cal restoration.

关键词： soil ecosystem multifunctionality viruses auxiliary metabolic g.nes org.nochlorine pesticides contamination

Triple the steady-state reaction rate by decorating.the In_(2)O_(3)surface with SiO_(x)for CO_(2)hydrog.nation

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Journal of Energ. Chemistry 2024年第8期95卷 96-105,I0003页

作者： Hao Wang.Chun Yang.Xiaoyan Yu Ming.ui Wang.Runze Yang.Xiaowa Nie Ben Hang.Yin Alex C.K.Yip Chunshan Song.g.ang.ui Zhang.Xinwen g.o State Key laboratory of Fine Chemicals Frontier Science Center for Smart MaterialsPSU-DUT Joint Center for Energy ResearchSchool of Chemical EngineeringDalian University of TechnologyDalian 116024LiaoningChina Department of Chemistry the Chinese University of Hong KongHong Kong 999077China Paihau-Robinson Research Institute the MacDiarmid Institute for Advanced Materials and NanotechnologyVictoria University of WellingtonWellington 6012New Zealand Department of Chemical and Process Eng.neering The University of CanterburyChristchurch 8041New Zealand

Indium oxide(In_(2)O_(3)),as a promising.candidate for CO_(2)hydrog.nation to C_(1) products,often suffers from sintering.and activity decline,closely related to the undesirable structural evolution under reaction *** on the comprehension of the dynamic evolution,this study presents an efficient strateg. to alleviate the ag.lomeration of In_(2)O_(3)nanoparticles by the surface decoration with hig.ly dispersed silica species(SiO_(x)).Various structural characterizations combined with density functional theory calculations demonstrated that the sintering.resulted from the over-reduction,while the enhanced stability orig.nated from the anchoring.effect of hig.ly stable In-OSi bonds,which hinders the substantial formation of metallic In(In^(0))and the subsequent ag.lomeration.0.6Si/In_(2)O_(3)exhibited CO_(2)conversion rate of10.0 mmol g.(-1)h^(-1)at steady state vs.3.5 mmol g.(-1)h^(-1)on In_(2)O_(3)in CO_(2)*** steady-state activity was also achieved on Pd-modified *** to the traditional Pd/In_(2)O_(3)catalyst,the methanol production rate of Pd catalyst supported on 0.6Si/In_(2)O_(3)was enhanced by 23%,showing.the potential of In_(2)O_(3)modified by SiO_(x)in serving.as a platform *** work provides a promising.method to desig. new In_(2)O_(3)-based catalysts with improved activity and stability in CO_(2)hydrog.nation.

关键词： CO_(2)hydrog.nation In_(2)O_(3)sintering Dynamic structural evolution Surface SiO_(x)modification DFT simulations

A survey on dynamic g.aph processing.on g.Us: concepts, terminolog.es and systems

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Frontiers of Computer Science 2024年第4期18卷 1-23页

作者： Hong.u g.O Xiaofei LIAO Zhiyuan SHAO Kexin LI Jiajie CHEN Hai JIN National Eng.neering.Research Center for Big.Data Technolog. and System/Services Computing.Technolog. and System lab/Cluster and g.id Computing.lab School of Computer Science and TechnologyHuazhong University of Science and TechnologyWuhan 430074China Zhejiang.lab Hangzhou 311121China

g.aphs that are used to model real-world entities with vertices and relationships among.entities with edg.s,have proven to be a powerful tool for describing.real-world problems in *** most real-world scenarios,entities and their relationships are subject to constant *** that record such chang.s are called dynamic *** recent years,the widespread application scenarios of dynamic g.aphs have stimulated extensive research on dynamic g.aph processing.systems that continuously ing.st g.aph updates and produce up-to-date g.aph analytics *** the scale of dynamic g.aphs becomes larg.r,hig.er performance requirements are demanded to dynamic g.aph processing.*** the massive parallel processing.power and hig. memory bandwidth,g.Us become mainstream vehicles to accelerate dynamic g.aph processing.***-based dynamic g.aph processing.systems mainly address two challeng.s:maintaining.the g.aph data when updates occur(i.e.,g.aph updating.and producing.analytics results in time(i.e.,g.aph computing..In this paper,we survey g.U-based dynamic g.aph processing.systems and review their methods on addressing.both g.aph updating.and g.aph *** comprehensively discuss existing.dynamic g.aph processing.systems on g.Us,we first introduce the terminolog.es of dynamic g.aph processing.and then develop a taxonomy to describe the methods employed for g.aph updating.and g.aph *** addition,we discuss the challeng.s and future research directions of dynamic g.aph processing.on g.Us.

关键词： dynamic g.aphs g.aph processing g.aph alg.rithms g.Us