学科分类
/ 1
11 个结果
  • 简介:Tomakeitpossibleforthethermalwavetheoryontemperatureoscillation(TO)effectsinlivingtissuestobefoundedonthesubstantialexperimentalbasis,aseriesoftypicaldecisiveexperimentsinvivoaswellasinartificiallysimulatingcostructionswerecarredout.COnclusionsobtainedincludingsomeotherscholarsanimalexperimentalresultsallgreatlysupportthethermalwaveviewpointqualitatively,Afewexperimentalfactsusednottobeeasilyunderstoodfromtheclassicalviewpointarealsowellreinterpreted.TherevealingonthethermalwavemechanismsofTOinlivingtissuesisabrandnewdiscoveryanddeepinsightintothisimportantthermophysiologicalphenomenon,Itmaypossiblypromotenewinvestigationsonthecorrespondingtopicsinthefieldofbioheattransferscience.

  • 标签: 生物细胞 热传输 热生理学
  • 简介:Anovelacrylateinimer,2-(2-chloroacetyloxy)ethylacrylate,waspreparedbythereactionof2-hydroxyethylacrylatewithchloroacetylchlorideinthepresenceoftriethylamine.Theself-condensingvinyllivingradicalpolymerizationoftheinimerwasstudiedandthehyperbranchedmacromoleculescontainingesterlinkagesontheirbackbonewereprepared.Allthepolymerizationproductswerecharacterizedby1HNMR.Thepolymerizationdegreeandthebranchingparameterwerecalculatedbasedonthe1HNMRspectra.Ithasbeenshownthatthisinimerexhibitsaverydistinctivepolymerizationbehavior.Similartostep-growthpolymerization,thepolymerizationdegreeoftheproductsformedincreasedexponentiallyduringtheearlystageofthepolymerization,andthentheincreasingratesloweddown.However,theinimerremainedpresentthroughoutthepolymerizationconsistentwithconventionalfreeradicalpolymerization.Also,ifmuchlongerpolymerizationtimewasused,thepolymerizationsystemwouldbecomegelduetothecrosslinkingreactionderivedfromradical-radicalrecombination.Asaresultoftheunequalreactivityof-CH2Cland>CHCl,analmostlinearproductwasobtainedatamolarratioofbipytoinimer=0.05,whilearelativelyhighratioofbipytoinimer1favoredtheformationofthebranchedstructure.Themacromoleculesformedatahighratioofbipytoinimer1exhibitedanexcellentsolubilityinorganicsolventssuchasacetone.

  • 标签: HYPERBRANCHED macromolecules Self-condensing VINYL polymerization Living
  • 简介:Anewallylnickel(II)complex([S(R)]-N-[(1S)-2-(diphenylphosphino)-1-phenylethyl]-2-methyl-2-propanesulfinamide)(2,2,2-trifluoroacetato-kO)(p-allyl)nickel(2)wasdesignedandpreparedbyusingchiralphosphine.2wasrevealedtoefficientlyinitiatethepolymerizationofL-andD-N-(1-(dodecylamino)-1-oxopropan-2-yl)-4-(propa-1,2-dien-1-yloxy)-benzamide(L-1andD-1)inaliving/controlledchaingrowthmanner.PolymerizationkineticsofL-1andD-1indicatedthatL-1preferentiallypolymerizedovertheantipodeD-1byafactorof1.9.Inblockcopolymerizationofrac-1usingthepoly-L-150asthemacroinitiator,thepolymerizationproceededinenantiomer-selectivemanner.Itwasfoundthatenantiomericexcess(ee)valueoftherecoveredmonomerincreasedwiththemonomerconversionandfinallyreachedtothemaximumof34%.Theseresultssuggestthischiralphosphinecomplexexhibitsenantiomer-selectivityforthepolymerizationofchiralallenederivativemonomer.

  • 标签: CHIRAL ALLENE Helical polymer CHIRAL phosphine
  • 简介:Nitricoxidehasplayedanimportantroleinmanyphysiologicalandpathologicalprocessesasakindofimportantgassignalmolecules.Inthiswork,anewfluorescentprobeLysoNO-NaphfordetectingNOinlysosomesbasedon1,8-naphthalimidewasreported.LysoNO-Naphhassub-groupsofo-phenylenediamineasaNOreactionsiteand4-(2-aminoethyl)-morpholineasalysosome-targetablegroup.Thisprobeexhibitedgoodselectivityandhighsensitivity(4.57mmol/L)towardNOinawidepHrangefrom4to12.Furthermore,LysoNO-NaphcanbeusedforimagingNOinlysosomesinlivingcells.

  • 标签: 活细胞成像 荧光探针 一氧化氮 溶酶体 气体信号分子 NAPH
  • 简介:在tetrahydrofuran(THF)的生活cationic戒指洞聚合期间的单体集中的方便即时监视与甲基triflate(MeOTf)开始了的A为平衡单体集中的运动调查和决心被开发了([M]e)经由在在联合的situFTIR光谱学与一颗钻石付小费给的稀释全部的反射(ATR)沉浸探查。聚合率从ln的线性斜坡是关于单体集中和开始者集中的第一份订单([M]<潜水艇class=“a-plus-plus”>0-[M]e)/([M]-[M]在在各种各样的溶剂的不同温度的e)对聚合时间。[M]<潜水艇class=“a-plus-plus”>当与增加聚合温度指数地增加了时,e与起始的单体集中线性地减少了。平衡强烈也取决于有单体的溶剂极性和它的相互作用。平衡聚合时间(t<潜水艇class=“a-plus-plus”>e)与增加溶剂极性减少了并且与增加线性地减少了[M]<潜水艇class=“a-plus-plus”>在有到当溶剂不在时的体积聚合的一样的点的不同斜坡的三溶剂的0。M的方程n,e=72.1/(0.14-0.04[M]e)被建立了为数字一般水准为预言提供一条简单、有效的途径以平衡状态的polyTHFs的分子的重量(Mn,在在0o犀?犀?犈?犈的THF的平衡生活cationic戒指洞聚合的e)??

  • 标签: 阳离子开环聚合 平衡状态 聚四氢呋喃 数均分子量 实时监控 直接预测