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简介：草酸钙的同时的生长上的钾柠檬酸盐(K_3cit)的导致的效果单音--(COM)，di-(货到付款)，和在合成的尿的trihydrate(简易窄床)晶体与凝胶状的technique.K_3cit能导致的两倍散开被观察货到付款和简易窄床的形成，禁止聚集并且减少COM晶体的表面积。它支持了clinical使用ofK_3cit并且可以为新药在痊愈并且在搜索提供重要线索给这疾病。

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简介：Thepreparationofcalciumphosphate(CP)coatingonaluminaceramicsusingelectricpulsestimulatingmethodhasbeeninvestigated.Thecup-shapedaluminaceramicsweresoakedinasimulatedbodyfluid(SBF),andasquarepulsepotentialwithfrequencyof1Hzandvoltageof110Vwasappliedbetweentheinnerandoutersurfacesofthealuminacup.SurfacemorphologyofCPcoatingsduringdifferentdepositionperiodswasobservedbyaPhilipsXL-30scanningelectronmicroscope(SEM).CompositionalanalysiswasexaminedbyEDAX.ThemechanismofnucleationandgrowthofCPcoatingwasdiscussed.SEMresultindicatesthatthecoatingcomprisesofalargenumberoftinyneedle-likegrainsandhasaporousmicrostructure.ThereisastrongbondbetweenthedepositedlayerandAl2O3substrate,whichmaybeduetothegentlegrowthofthebiomimeticmethod.TheEDAXanalysisindicatesthatmaincompositionofthecoatingiscalciumandphosphor.TheformationofCPcoatingmaybecontributedtothestimulationofelectricpulseandthehighionsconcentrationwhichis1.5timesoftheconcentrationofSBFsolution(1.5SBFsolution).SuchsurfacefunctionalizationmethodbyelectricpulsepotentialcanbeusedtoprepareCPcoatingonvariouselectric-insulatingbioinertmaterialsforimprovingtheirbioactivecharacter.

简介：EnvironmentalfriendlyrecyclingprocessforNd-Fe-Bsinteredmagnetsludgesgeneratedinthemanufacturingprocess,whichcontainlargeamountofrareearth,includingNd,PrandDy,isbadlyneededsofar.Inpresentstudy,wehavedevelopedaneffectiveroutetoobtainrecycledsinteredmagnetsfromNd-Fe-Bsinteredmagnetsludgesbycalciumreduction-diffusion（RD）process.Comparedtoconventionalrecyclingprocess,ourresearchisfocusedonrecoveringmostoftheusefulelements,includingNd,Pr,Dy,Co,andFetogetherinsteadofjustrareearthelements.Toimprovetherecyclingefficiencyandreducepollution,theco-precipitatingparametersweresimulatedandcalculatedusingMATLABsoftware.Mostofusefulelementswererecoveredbyaco-precipitationmethod,andtheobtainedcompositepowderswerethendirectlyfabricatedasrecycledNd-Fe-Bpowdersbyacalciumreduction-diffusion（RD）method.Therecoveryratesare98%,99%,99%,93%,and99%,forNd,Pr,Dy,Co,andFe,respectively.Theamountofusefulelementscontainedintherecoveredcompositepowdersisgreaterthan99.71wt%.TheprocessofRDforsynthesizingNd2Fe14BandsubsequentlyremovingCaOwasthoroughlyinvestigated.Furthermore,therecycledNd-Fe-Bmagnetexhibitsaremanenceof1.1T,acoercivityof1053kA/m,andanenergyproductof235.6kJ/m3,respectively,indicatingthatrecycledNd-Fe-Bsinteredmagnetwassuccessfullyrecoveredfromtheseverelycontaminatedsludgesviaaneffectiverecyclingroute.

简介：当演员组微观结构和Mg-5Zn-5Sn的机械性质上的Ca增加的效果(集体部分，%)合金被调查。结果显示那0.5%-1.5%(集体部分)的增加Ca到Mg-5Zn-5Sn合金不仅精制合金的当演员组微观结构而且与高热的稳定性引起主要或最容易溶解的CaMgSn阶段的形成；从0.5%～1.5%的Ca数量(集体部分)的增加增加CaMgSn阶段的数量和尺寸。另外，Mg-5Zn-5Sn合金的Ca增加在房间温度和150?改进张力的性质不仅??六?????????????剔????????吠???????????????吗???传？？

简介：ObjectivesToinvestigateeffectofAngll,captoprilonsingleguineamyocytesonL-typecalciumcurrentandsodiumcurrent.MethodsMembranepatchclampwholecellrecordingtechniquewasusedtoinvestigateeffectofangll,captoprilonL-Camaximumcurrentdensityandsodiummaximumcurrentdensity.ResutlsAngllincreasedthemaximumcurrentdensitycomparedwithcontrolafterperfused5min,357.7±219.7Vs279.5±240.5PA/PF,increaserateis27.9%,theshapeofcurrent-voltagerelationshipcurvewasunchanged,peakedat+10mv,indicatedthatangllincreasedL-Cacurrentdensityinvoltage-dependent.Afterperfusedwithcaptopril,captopril+angll3,5min,L-Cacurrentwasrecorded,resultssuggestL-Camaximumcurrentdensitydecreasedsignificantlycomparedwithcontrol,incaptoprilgroup,128.4±92.6Vs286.2±89.7,66.7±68.3Vs286.2±89.7,respectively,rateofinhibitionis55.1%,76.6%,respectively.L-Cacurrentfurtherdecreasedincaptoprilpe

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简介：Theinfluencesofmagnesiumandferricionsintheirdifferentratiosontherateofgypsumcrystallizationwerestudiedundertheconditionssimilartothoseofwetflue-gasdesulfurization(WFGD).TheresultsshowthatadditionofbothMg2+andFe3+increasedinductiontimeanddecreasedthegrowthefficiencyupto50%comparedwiththebaseline(withoutimpurities)dependingontheconcentrationandthetypeofimpurity.TheeffectsofMg2+andFe3+onthesurfaceenergyandtherateofnucleationwereestimatedbyemployingtheclassicalnucleationtheory.Thesurfaceenergydecreasedby8%and14%withtheadditionof0.02mol/Lmagnesiumorferricions,respectively,comparedtothebaseline.Mg2+andFe3+madethegrowthrateofthe(020),(021)and(040)facesofgypsumcrystalamuchgreaterreduction,whichleadstotheformationofneedlecrystalscomparedtothebaselinewhichfavorstheformationofplateorflakes.Furthermore,anedgedetectionprogramwasdevelopedtoquantifytheeffectsofimpuritiesonthefiltrationrateofgypsumproduct.Theresultsshowthattheinhibitionefficiencyofthepresenceof0.02mol/LMg2+andFe3+onthefiltrationrateofgypsumcrystalrangesfrom22%to39%.

简介：Objective:Tostudytheeffectofnitricoxide-inducedtyrosinephosphorylationoflarge-conductancecalcium-activatedpotassium(BKCa)channelαsubunitonvascularhyporesponsivenessinrats.Methods:Atotalof46Wistarratsofeithersex,weighing250g±20g,wereusedinthisstudy.Modelsofvascularhyporesponsivenessinducedbyhemorrhagicshock(30mmHgfor2hours)invivoandbyL-arginineinvitrowereestablishedrespectively.Thevascularresponsivenessofisolatedsuperiormesentericarteriestonorepinephrinewasobserved.TyrosinephosphorylationofBKCaαsubunitwasevaluatedwithmethodsofimmunoprecipitationandWesternblotting.Results:Inthesmoothmusclecellsofthesuperiormesentericarteries,theexpressionofBKCaαsubunittyrosinephosphorylationincreasedfollowinghemorrhagicshock,andL-argininecouldinduceBKCachannelαsubunittyrosinephosphorylationinatime-anddose-dependentmanner.L-NAME(Nω-nitro-L-arginine-methyl-ester),anitricoxidesynthetaseinhibitor,couldpartlyrestorethedecreasedvasoresponsivenessofthesuperiormesentericarteriesafterhemorrhagicshockinrats.Down-regulatingtheproteintyrosinephosphorylationwithgenistein,awidely-usedspecialproteintyrosinekinaseinhibitor,couldpartlyimprovethedecreasedvasoresponsivenessofthesuperiormesentericarteriesinducedbyL-arginineinvitro,whileup-regulatingtheproteintyrosinephosphorylationwithNa3VO4,aproteintyrosinephosphataseinhibitor,couldfurtherdecreasethenitricoxide-inducedvascularhyporesponsiveness,whichcouldbepartlyamelioratedby0.1mmol/Ltetrabutylammoniumchloride(TEA),aselectiveBKCainhibitoratthisconcentration.Conclusions:NitricoxidecaninducethetyrosinephosphorylationofBKCaαsubunit,whichinfluencesthevascularhyporesponsivenessinhemorrhagicshockratsorinducedbyL-arginineinvitro.

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简介：hard-core/soft-shell钙碳酸盐(CaCO3)的合成/poly(甲基methacrylate)(PMMA)混合结构化的nanoparticles(<100nm)由把分裂成原子的微乳液聚合，过程被报导。聚合物链通过acoupling代理人的使用被抛锚到nano-CaCO3的表面上，triethoxyvinylsilane(TEVS)。铵persulfate(APS)，钠dodecyl硫酸盐(SDS)和n-pentanol分别地被用作开始者，表面活化剂和cosurfactant。coreshell乳胶粒子的聚合机制被讨论。由PMMA的nano-CaCO3的封装用一台传播电子显微镜(TEM)被证实。coreshell粒子的grafting百分比被thermogravimetric分析(TGA)调查。nano-CaCO3/PMMAcoreshell粒子被Fourier变换描绘红外线(FTIR)光谱学和微分扫描热量测定(DSC)。FTIR结果在nano-CaCO3粒子和PMMA的接口揭示了一个强壮的相互作用的存在，它成功地暗示聚合物链是grafted到通过联合代理人的连接的nano-CaCO3粒子的表面上。另外，TGA和DSC结果与纯nano-PMMA的相比显示了coreshell材料的热稳定性的改进。nano-CaCO3/PMMA粒子被混合进聚丙烯(PP)矩阵由融化处理。它能也用扫描PMMA锁住的电子显微镜学(SEM)被观察grafted在聚合物矩阵(PP矩阵)防碍到CaCO3nanoparticles上CaCO3的聚集并且因此与PP矩阵改进CaCO3nanoparticles的相容性。