简介：AnecessaryandsufficientconditionofthesolubilityfarthemultidimensionalTLSproblemispresented.

简介：1IntroductionLetRn×nbethesetofalln×nrealmatrices.Rn=Rn×1.Cn×ndenotesthesetofalln×ncomplexmatrices.Weareinterestedinsolvingthefollowinginverseeigenvalueprob-lems:ProblemA（Additiveinverseeigenvalueproblem）Givenann×nrealmatrixA=(aij),andndistinctrealnumbersλ1,λ2,…,λn,findarealn×ndiagonalmatrixD=diag

简介：医药石头manifanshi被使用极化光显微镜学研究，X---光线衍射(XRD)，和感应耦合等离子体原子发射光谱法(ICP-AES)方法。未加工的Manifanshi的XRD模式显示它主导地由斜长石组成，正长石，石英，和在1000deg6号元素碳的化学符号的锻烧的Manifanshi的证明在斜长石和正长石的晶体结构的失真在锻烧的温度发生。极化光显微镜学观察建议Manifanshi是自然地捱过的monzo花岗石斑岩。化学分析表明因此，Manifanshi包含很多个有益健康的痕量元素和稀罕有毒的痕量元素它是高质量的Manifanshi。痕量元素的溶解度被从在由ICP方法改变温度情况下面锻烧的Manifanshi测量痕量元素的集中决定，结果建议在1000deg6号元素碳的化学符号的锻烧的产品在水里在离子的集中和痕量元素的溶解率显示出理想的结果，它被贡献在锻烧的温度的长石的晶体结构的失真。

简介：PPV－basedcopolymerswithcyanogroupinthemainchainhavebeensynthesizedbyWittig-typepolycondensationofalkoxy-substituteddialdehydesand4,4'-bis(cyanomethyl)-substituteddiphenylether:[-C6H4-O-C6H4-C(CN)=CH-C6H2(OR)2-C=C(CN)-]n(POPPV),Thecopolymersarehighlysolubleincommonsolventsandtheirsuperhighlytransparenthomogeneousthinfilmscanbeformedbyspincoatingdirectlywithoutheattreatment.ThechemicalstructuresaredeterminedbyNMRandIRspectroscopysandevaluatedusingphotoluminescence,gel-permeationchromatography(GPC)andDSC(orTGA)methods.TheincorporationofethergroupintothePPVbackbonehasaninterruptionofthemain-chainconjugation,thatresultsintheblue-shiftofelectroluminescencespectraandenhancemntthesolubility.

简介：Thesolubilityofferroalloyedneodymiuminmoltensaltcontainingneodymiumtrichlorideandthede-pendenceofsolubilityontemperatureandcompositionofthemeltaredeterminedbymeansofelectrochemicalmethod.Thedataobtainedareingoodagreementwithresultofchemicalanalysisofthequenchedmoltensaltsamples.

简介：Inordertoobtainthesolubilitydataofpropylenein2-propanol-watersolutions,gas-liquidequilibrium(GLE)experimentswerecarriedoutat303.15-333.15K,0.27-0.98MPainastaticequilibriumstill.Theoriginalmassratioof2-propanoltowaterwas9∶1,8∶2,7∶3,1∶0,respectively.TheequilibriumdatawerecorrelatedwithanempiricalmodelandtheregressionofmodelparameterswascompletedbyGauss-Newtonnonlinearleastsquare(NLS).Theaveragerelativedeviation(ARD)betweentheexperimentalandcalculatedvalueis1.5700,andthemaximumrelativedeviation(MRD)is4.8200.Inaddition,asimpleapproachthatcorrelatedthemodelparameterswiththesystemcompositionwasalsoprovided.

简介：这研究在溶解度和水杨酸酸的集体转移系数上处理水疗院修辞的效果。溶解度和集体转移研究用水疗院修辞被执行，即，在0∼3.0mol/L的集中和303∼333K的系统温度的钠醋酸盐，钠水杨酸盐，柠檬性的酸，和脲。溶解度和水杨酸酸的集体转移系数与系统温度随水疗院修辞集中并且也的增加增加，这被发现。在这个工作使用的所有水疗院修辞在溶解度和集体转移系数显示出改进到不同的度。最大的改进因素价值为在这研究使用的所有水疗院修辞被决定。最高的价值为溶解度研究是28.08，10.42为质量转移研究。水疗院修辞的表演以Setschenow常数被测量(Ks)。观察的最高的价值是0.696。

简介：硅酸盐perovskites((Mg，Fe)SiO3和CaSiO3)被相信是在更低的披风的主要成分矿物质。阶段关系，稳固的答案，铁的旋转状态和与更低的披风perovskite有关的水溶解度具有地球的内部的地球动力学上并且在矿石矿化作用上的大效果。以前的研究显示大量铁结合了铝能合并到镁perovskite，但是这与disproportionation是不和的(Mg，Fe)SiO3perovskite进没有铁的MgSiO3perovskite和六角形的阶段(Mg0.6在地球的更低的披风的Fe0.4)SiO3。MnSiO3是证实强烈在MnSiO3愿望的更低的披风，和增加以磅条件与MgSiO3perovskite与CaSiO3perovskite和完全的稳固的答案形成宽范围固体答案的第一个化学部件影响在MgSiO3和CaSiO3之间的相互的溶解度。铁的旋转状态是深深地取决于Fe3+或Fe2+,的地点职业合成和样品的退火的条件。然而，看起来，在更低的披风perovskite的Fe2+的旋转状态能作为高纺纱被解决中间的纺纱的存在或在perovskite的Fe2+的低旋转状态没被澄清。而且，不同结果也在perovskite为Fe3+的旋转状态被报导了。更低的披风perovskite的水溶解度与它的作文被联系。在纯MgSiO3perovskite，不到500仅仅ppm水被报导。在更低的披风的Al-MgSiO3perovskite或Al-Fe-MgSiO3perovskite提供1100～1800ppm的水。进一步的实验是必要的为perovskite固体答案澄清详细条件，并且为深深地理解地球的内部和矿石矿化作用的地球动力学在不同的层比较不同阶段的水溶解度，到可靠地在共存分析铁的原子价和旋转状态忍受铁的阶段。

简介：ThesolidsolubilityofCe、La、SmandNdinFeorNiatvarioustemperaturewasdeterminedbymeansofadiffusion-couplemethodwiththeaidofanelectronprobemicroanalyzer.Twomethods,namelyareamethodandwholerangemethod,wereproposedfordataprocessinginthepresentpaper.Theprincipleandre-latedproblemsintheexperimentaldeterminationofthesolidsolubilityofrare-earthelementsinFeorNibyuseoftheabovementionedmethodswerealsodiscussed.

简介：Theexperimentsongoldsolubilityinaminoacidsolutionmdicatethatgoldisveryintensivelysolubleinaminoacid(orotherorganicacids),whichisextensivelypresentingeologicalbodies,andismostsolubleinhistidine.Thetemperatureandconcentration,acidityandtypeofaminoacidinthesolutionareimportantfactorsaffectinggold-aminoacidcomplexing.Thesolubilityofgoldinaminoacidisdifferentunderdifferentconditionsoftemperature,aminoacidconcentrationandpHvalueofthesolution,At80℃andpH=6-8,goldismostsolubleinaminoacid.Golddispersedinwaterandrockscouldbeconcentratedandtransportedbyaminoacidandthenprecipitatedinfavorableloci.Aminoacidsmighthaveplayedanimportantroleinmetallogenesisaswellasintheformationofsourcebedsofgold.Nitrogen,oxygenandsulfurinaminoacidmighthavereactedwithgoldtoformsolublecomplexions.

简介：ExperimentshavebeenperformedonthesystemMgO-SiO2-Cr-Oat0-2.88GPaand1100-1450℃,focusingonthestabilityofCr^2+inolivine(O1),orthopyroxene(Opx)andspinel(Sp)anditspartitioningbetweenthesephases.Analyticalreagentgradechemicals,MgO,SiO2,Cr2O3.andCrwereusedtomakestartingmixtures.ExcessCr(50%)wasthenaddedinthesemixturestoensurethattheresultantphaseswereinequilibriumwiththemetalCr.FluxofBaO+B2O3(%)wasaddedforfacilitatingexperimentalequilibriumandcrystalgrowth.Crwasusedascapsulematerial.AllphasesintheproductwereidentifiedbyX-rayandanalyzedbyelectronmicroprobe,ThecontentsofCrOinthedifferentphases(O1,OpxandSp)werecalculatedaccordingtostoichiometry.TheobtainedresultsofcalculationindicatethatCr^3+inOlandOpxisnegligible.Theexperimentalresultsshow;(a)withincreasingtemperatureanddecreasingpressure,Cr^2+solubilityinOl,OpxandSpincreases;(b)withincreasingtemperature,thepartitioningcoefficientofMgandCr^2+betweenOlandOpxdecreases,thatbetweenOpxandSpincreases,andthatbetweenOlandSpremainsalmostunchanged;(c)theeffectofpressureonallpartitioningcoefficientsisnegligible.

简介：Inthiswork,somechemometricsmethodsareappliedforthemodelingandpredictionoftheHildebrandsolubilityparameterofsomepolymers.Ageneticalgorithm(GA)methodisdesignedfortheselectionofvariablestoconstructtwomodelsusingthemultiplelinearregression(MLR)andleastsquare-supportvectormachine(LS-SVM)methodsinordertopredicttheHildebrandsolubilityparameter.TheMLRmethodisusedtobuildalinearrelationshipbetweenthemoleculardescriptorsandtheHildebrandsolubilityparameterforthesecompounds.ThentheLS-SVMmethodisutilizedtoconstructthenon-linearquantitativestructure-activityrelationship(QSAR)models.TheresultsobtainedusingtheLS-SVMmethodarethencomparedwiththoseobtainedfortheMLRmethod;itwasrevealedthattheLS-SVMmodelwasmuchbetterthantheMLRone.Theroot-mean-squareerrorsofthetrainingsetandthetestsetfortheLS-SVMmodelwere0.2912and0.2427,andthecorrelationcoefficientswere0.9662and0.9518,respectively.ThispaperprovidesanewandeffectivemethodforpredictingtheHildebrandsolubilityparameterforsomepolymers,andalsorevealsthattheLS-SVMmethodcanbeusedasapowerfulchemometricstoolforthequantitativestructure-propertyrelationship(QSPR)studies.

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