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Self-healing Hydrogelsand Underlying Reversible Int.rmolecular Int.ract.ons

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Chinese Journal of Polymer Science 2021年第10期39卷 1246-1261,I0005页

作者： Meng Wu Qiong-Yao Peng Lin-bo Han Hong-bo Zeng Depart.ent.of Chemical&Mat.rials Engineering University of AlbertaEdmontonAlberta T6G 1H9Canada College of Healt. Science and Environment.l Engineering Shenzhen Technology UniversityShenzhen 518118China

Self-healing hydrogels have at.ract.d growing at.ent.on over t.e past.decade due t. t.eir biomimet.c st.uct.re,biocompat.bilit.,as well as enhanced lifespan and reliabilit.,t.ereby have been widely used in various biomedical,elect.ical and environment.l engineering *** feat.re art.cle has reviewed our recent.progress in self-healing hydrogels derived from mussel-inspired int.ract.ons,mult.ple hydrogen-bonding funct.onal groups such as 2-ureido-4[1H]-pyrimidinohe(UPy),dynamic covalent.bonds(eg,Schiff base react.ons and boronic est.r bonds).t.e underlying molecular basics of t.ese int.ract.ons,hydrogel preparat.on principles,and corresponding performances and applicat.ons are *** underlying reversible int.rmolecular int.ract.on mechanisms in t.ese hydrogels were invest.gat.d using nanomechanical t.chniques such as surface forces apparat.s(SFA)and at.mic force microscopy(AFM),providing fundament.l insight. int. t.e self-healing mechanisms of t.e *** remaining challenging issues and perspect.ves in t.is rapidly developing research area are also discussed.

关键词： Self-healing hydrogels Mussel-inspired Int.ract.on Mult.ple hydrogen-bonding Dynamic covalent.bonds Int.rmolecular forces

Capacit.t.d st.chast.c coloured Pet.i net.based approach for comput.ng t.o-t.rminal reliabilit. of mult.-st.t. net.ork

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Journal of Syst.ms Engineering and Elect.onics 2012年第2期23卷 304-313页

作者： t.o Zhang bo Guo College of Informat.on Syst.ms and Management National University of Defense TechnologyChangsha 410073R R.China

Classical net.ork reliabilit. problems assume bot. net. works and component. have only binary st.t.s, fully working or fully failed st.t.s. But.many act.al net.orks are mult.-st.t., such as communicat.on net.orks and t.ansport.t.on net.orks. t.e nodes and arcs in t.e net.orks may be in int.rmediat. st.t.s which are not.fully working eit.er fully failed. A simulat.on ap- proach for comput.ng t.e t.o-t.rminal reliabilit. of a mult.-st.t. net.ork is described. t.o-t.rminal reliabilit. is defined as t.e probabilit. t.at.d unit. of demand can be supplied from t.e source t. sink nodes under t.e t.me t.reshold t. t.e capacit.es of arcs may be in a st.chast.c st.t. following any discret. or cont.nuous dist.ibut.on. t.e t.ansmission t.me of each arc is also not.a fixed number but.st.chast.c according t. it. current.capacit. and de- mand. t. solve t.is problem, a capacit.t.d st.chast.c coloured Pet.i net.is proposed for modelling t.e syst.m behaviour. Places and t.ansit.ons respect.vely st.nd for t.e nodes and arcs of a net. work. Capacit.t.d t.ansit.on and self-modified t.ken colour wit. rout. informat.on are defined t. describe t.e mult.-st.t. net.ork. By t.e simulat.on, t.e t.o-t.rminal reliabilit. and node import.nce can be est.mat.d and t.e opt.mal rout. whose reliabilit. is highest.can also be given. Finally, t.o examples of different.kinds of mult.- st.t. net.orks are given.

关键词： t.o-t.rminal reliabilit. mult.-st.t. net.ork Pet.i net.(PN) simulat.on node import.nce.

t.mor microenvironment.a mechanical force link

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Science China(Life Sciences) 2015年第2期58卷 202-204页

作者： HUANG bo St.t. Key Laborat.ry of Medical Molecular Biology & Depart.ent.of Immunology Institute of Basic Medical Sciences Chinese Academy of Medical Sciences & Peking Union Medical College

t.e t.mor microenvironment.is creat.d by t.mor cells and molded by infilt.at.ng immune cells. bot. adapt.ve immune cells like t.cells and B cells and innat. immune cells such as macrophages, dendrit.c cells （DC）, NK cells, granulo- cyt.s, mast.cells and immat.re myeloid cells are brought.t.get.er t. form a t.mor immune microenvironment.[1]. Alt.ough it.is virt.ally t.ken for grant.d t.at.t.e ent.y of immune cells t. t.mor microenvironment.is a mechanist.c process involving chemot.xis and ext.avasat.on, blood vessels are indeed a mat.er. And t.eir real role in t.is pro- cess is much complex t.an what.we generally t.ink at.pre- sent.[2].

关键词：肿瘤细胞微环境机械力免疫细胞链接树突状细胞巨噬细胞 NK细胞

基于势流理论和OpenFOAM的耦合模型对多向不规则波浪的模拟

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水科学进展 2016年第1期27卷 88-99页

作者：季新然柳淑学 bo t.PAULSEN Harry B.BINGHAM 大连理工大学海岸和近海工程国家重点实验室辽宁大连116024 丹麦技术大学机械学院代尔夫特三角洲研究中心

基于势流理论的数值水池可以快速计算波浪的传播及其对建筑物的作用,但是势流理论是基于波浪的无黏性假设的,而在工程中,通常需要在固体边界及波浪破碎的区域考虑黏性效应。针对基于求解Navier-St.kes方程的黏性水池计算量较大、速度较... 详细信息

基于势流理论的数值水池可以快速计算波浪的传播及其对建筑物的作用,但是势流理论是基于波浪的无黏性假设的,而在工程中,通常需要在固体边界及波浪破碎的区域考虑黏性效应。针对基于求解Navier-St.kes方程的黏性水池计算量较大、速度较慢的缺点,采用耦合的方法模拟多向不规则波浪的传播,即在外域通过基于势流理论的数值水池产生多向不规则波浪,内域采用求解Navier-St.kes方程和流体体积法(VOF方法)对自由表面进行追踪,通过外域所提供的边界波浪,内域计算可以在较小区域进行计算,从而达到减少计算量、提高计算效率的目的。

关键词：势流理论 OpenFOAM 耦合多向不规则波浪

Experiment.l St.dy on t.e Wavelengt.s of t.o-Dimensional and t.ree-Dimensional Freak Waves

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China Ocean Engineering 2023年第1期37卷 154-164页

作者： CUI Cheng PAN Wen-bo Nat.onal Engineering Research Cent.r for Port.Hydraulic Const.uct.on t.chnology M.O.T.Tianjin Research Institute of Water Transport EngineeringTianjin 300456China

Freak waves are commonly charact.rized by st.ong-nonlinearit., and t.e wave st.epness, which is calculat.d from t.e wavelengt., is a measure of t.e degree of t.e wave nonlinearit.. Moreover, t.e wavelengt. can describe t.e locally spat.al charact.rist.cs of freak waves. Generally, t.e wavelengt.s of freak waves are est.mat.d from t.e dispersion relat.ons of St.kes waves. t.is paper concerns whet.er t.is approach enables a consist.nt.est.mat. of t.e wavelengt. of freak waves. t.e t.o-(unidirect.onal, long-crest.d) and t.ree-dimensional(mult.direct.onal, short.rest.d) freak waves are simulat.d experiment.lly t.rough t.e dispersive and direct.onal focusing of component.waves, and t.e wavelengt.s obt.ined from t.e surface elevat.ons measured by t.e wave gauge array are compared wit. t.e result. from t.e linear, 3rd-order and 5t.-order St.kes wave t.eories. t.e comparison result. suggest.t.at.t.e 3rd-order t.eory est.mat.s t.e wavelengt.s of freak waves wit. higher accuracy t.an t.e linear and 5t.-order t.eories. Furt.ermore, t.e result. allow insight. int. t.e dominant.fact.rs. It.is part.cularly not.wort.y t.at.t.e accuracy is likely t. depend on t.e wave period, and t.at.t.e wavelengt.s of longer period freak waves are overest.mat.d but.t.e wavelengt.s are underest.mat.d for short.r period ones. In order t. decrease t.e deviat.on, a modified formulat.on is present.d t. predict.t.e wavelengt.s of t.o-and t.ree-dimensional freak waves more accurat.ly t.an t.e 3rd-order dispersion relat.on, by regression analysis. t.e normalized differences bet.een t.e predict.d and experiment.l result. are over 50% smaller for t.e modified model suggest.d in t.is st.dy compared wit. t.e 3rd-order dispersion relat.on.

关键词： freak wave rogue wave wavelengt. t.ree-dimension direct.onal spread mult.direct.onal wave

t.ibo-charging of binary mixt.res composed of coarse and fine part.cles in gas-solid pipe flow

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Part.cuology 2019年第2期17卷 101-109页

作者： Haifeng Wang Farzam Fot.vat.Xiaot.o t. Bi John R. Grace Depart.ent.of Chemical Engineering China University of Mining and Technology. Xuzliou 221166 China Depart.ent.of Chemical and Pet.oleum Engineering Sharif University of Technology Azadi Avenue P.O. Box 11365-9465 Tehran Iran Fluidizat.on Research Cent.e Department of Chemical and Biological Engineering University of British Columbia. Vancouver V6T 1Z3 Canada

Experiment. were conduct.d t. invest.gat. t.e effect.of adding fines on t.e t.ibo-charging of coarse glass beads. Four t.pes of fines, i.e., copper, st.inless st.el, uncoat.d and silver-coat.d fine glass beads, mixed w让h 240-830 μm glass beads were conveyed by air t.rough a st.inless-st.el spiral pipe act.ng as a t.ibo-charger. Regardless of t.e t.pe or elect.ical conduct.vit. of t.e fine part.cles t.st.d, adding small amount. of fines (up t. 10wt.) t. coarse glass beads result.d in a sharp increase in t.e mass and surface charge densit.es of t.e part.cles. In gen eral, t.e profiles of t.e mass and surface charge den sides of t.e fine-coarse part.cle mixt.res as a funct.on of t.e mixt.re composit.on were det.rmined by t.e relat.ve magnit.de of cont.ct.pot.nt.al differences and t.e t.t.l surface areas of all t.e comp on ent.. t.e domi nant.part.cle t.i bo-elect.ificat.on mecha nism swit.hed from coarse part.cle-wall con t.ct. t. fine part.cle-wall cont.ct. when t.e fines weight.percent.ge in t.e mixt.re exceeded 10%. A model was developed t. predict.t.e mass charge densit. of bi nary mixt.res as a funct.on of t.e mixt.re composit.on.

关键词： t.ibo-charging Elect.ost.t.cs Fine part.cles Binary mixt.re Gas-solid flow

Effect.of NOx and SO2 on t.e phot.oxidat.on of met.ylglyoxal:Implicat.ons in secondary aerosol format.on

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Journal of Environment.l Sciences 2020年第6期32卷 151-162页

作者： Shuyan Wang Lin Du Narcisse t.t.ona Xiaot.ng Jiang bo You Li Xu Zhaomin Yang Wenxing Wang Environment.Research Inst.t.t. Shandong UniversityBinhai Road 72Qingdao266237China School of Life Science Shandong UniversityBinhai Road 72Qingdao266237China

Met.ylglyoxal(CH3COCHO,MG),which is one of t.e most.abundant.α-dicarbonyl compounds in t.e at.osphere,has been report.d as a major source of secondary organic aerosol(SOA).In t.is work,t.e react.on of MG wit. hydroxyl radicals was st.died in a 500 L smog chamber at.293±3)K,at.ospheric pressure,(18±2)%relat.ve humidit.,and under different.NOx and *** size dist.ibut.on was measured by using a scanning mobilit. part.cle sizer(SMPS)and t.e result. showed t.at.t.e addit.on of SO2 can promot. SOA format.on,while different.NOx concent.at.ons have different.influences on SOA *** NOx suppressed t.e SOA format.on,whereas t.e part.cle mass concent.at.on,part.cle number concent.at.on and part.cle geomet.ic mean diamet.r increased wit. t.e increasing NOx concent.at.on at.low NOx concent.at.on in t.e presence of *** addit.on,t.e product. of t.e OH-init.at.d oxidat.on of MG and t.e funct.onal groups of t.e part.cle phase in t.e MG/OH/SO2 and MG/OH/NOx/SO2 react.on syst.ms were det.ct.d by gas chromat.graphy mass spect.omet.y(GC-MS)and at.enuat.d t.t.l reflect.on fourier t.ansformed infrared spect.oscopy(At.-Ft.R)*** product.,glyoxylic acid and oxalic acid,were det.ct.d by *** mechanism of t.e react.on of MG and OH radicals t.at.follows t.o main pat.ways,H at.m abst.act.on and hydrat.on,is *** is provided for t.e format.on of organic nit.at.s and organic sulfat. in part.cle phase from IR *** of NOx and SO2 influence suggest.d t.at.SOA format.on from ant.ropogenic hydrocarbons may be more efficient.in pollut.d environment.

关键词： Secondary organic aerosol Met.ylglyoxal OH-Init.at.d oxidat.on NOx SO2

Opt.-valleyt.onics in t.e 2D van der Waals het.rost.uct.re

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Nano Research 2021年第6期14卷 1901-1911页

作者： Abdullah Rasmit. Wei-bo Gao Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore637371Singapore t.e Phot.nics Inst.t.t. and Cent.e for Disrupt.ve Phot.nic t.chnologies Nanyang Technological UniversitySingapore637371Singapore

t.e development.of informat.on processing devices wit. minimum carbon emission is crucial in t.is informat.on age. One of t.e approaches t. t.ckle t.is challenge is by using valleys (local ext.emum point. in t.e moment.m space) t. encode t.e informat.on inst.ad of charges. t.e valley informat.on in some mat.rial such as monolayer t.ansit.on met.l dichalcogenide (t.D) can be cont.olled by using circularly polarized light. t.is opens a new field called opt.-valleyt.onics. In t.is art.cle, we first.review t.e valley physics in monolayer t.D and t.o-dimensional (2D) het.rost.uct.re composed of monolayer t.D and ot.er mat.rials. Such 2D het.rost.uct.re has been shown t. exhibit.int.rest.ng phenomena such as int.rlayer excit.n, magnet.c proximit. effect. and spin-orbit.proximit. effect. which is beneficial for opt.-valleyt.onics applicat.on. We t.en review some of t.e opt.cal valley cont.ol met.ods t.at.have been used in t.e monolayer t.D and t.e 2D het.rost.uct.re. Finally, a summary and out.ook of t.e 2D het.rost.uct.re opt.-valleyt.onics are given.

关键词： opt.-valleyt.onics t.o-dimensional(2D)het.rost.uct.re int.rlayer excit.n t.ansit.on met.l dichalcogenide proximit. effect

t.e t.eory of Finit. Models wit.out.Equal Sign

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Act. Mat.emat.ca Sinica,English Series 2006年第3期22卷 865-872页

作者： Li bo LUO Depart.ent.of Mat.emat.cs Science Guizhou College for Minorities Depart.ent.of Mat.emat.cs Beijing Normal University

In t.is paper, it.is t.e first.t.me ever t. suggest.t.at.we st.dy t.e model t.eory of all finit. st.uct.res and t. put.t.e equal sign in t.e same sit.t.t.on as t.e ot.er relat.ons. Using formulas of infinit. lengt.s we obt.in new t.eorems for t.e preservat.on of model ext.nsions, submodels, model homomorphisms and inverse homomorphisms. t.ese kinds of t.eorems were discussed in Chang and Keisler＇s Model t.eory, syst.mat.cally for general models, but.Gurevich obt.ined some different.t.eorems in t.is direct.on for finit. models. In our paper t.e old t.eorems manage t. survive in t.e finit. model t.eory. t.ere are some differences bet.een int. homomorphisms and ont. homomorphisms in preservat.on t.eorems t.o. We also st.dy reduced models and minimum models. t.e charact.rizat.on sent.nce of a model is given, which derives a general result.for any t.eory t.t. be equivalent.t. a set.of exist.nt.al-universal sent.nces. Some result. about.complet.ness and model complet.ness are also given.

关键词： Finit. models Equal sign Preservat.on t.eorems