简介:Threepolymericadsorbentswithhydrogenbondingacceptors,methylamine,N-methyl-acetamideandaminotri(hydroxymethyl)methanemodifiedresinsaresynthesizedfromchloromethylatedX-5resin.AdsorptionisothermsofphenolandtheophyllineontothethreemodifiedresinsandtheoriginalX-5resinfromaqueoussolutionaremeasured.TheresultsshowthatadsorptionofcompoundswithhydrogenbondingdonorontomethylamineandN-methylacetamidemodifiedresinsisenhancedascomparedwiththatontoX-5resin,andadsorptionmechanismbetweentheadsorbentsandtheadsorbatesismainlybasedonhydrogenbondingandhydrophobicinteraction.Whileadsorptionofcompoundswithhydrogenbondingdonorontoaminotri(hydroxymethyl)methanemodifiedresinisloweredascomparedwiththatontoX-5resin,andadsorptionmechanismbetweentheadsorbentandtheadsorbatesismainlybasedonhydrophobicinteraction.
简介:Vanadiumalloys(V-Cr-Tiseries)areimportantcandidatematerialsforblanketcomponentsoffusionreactorsduetotheirlowactivationandhighstrengthatelevatedtemperatures.Low-temperatureirradiationembrittlementdeterminestheoperationtemperaturelimitofVanadiumalloysfortheapplicationtostructuralmaterialsoffusionreactorsirradiationresponseofvanadiumalloysneedstobeclarifiedfortheirapplication.Inthepresentstudy,specimensoftwoalloys(V-4Cr-4TiandV-5Cr-5Ti)wereirradiatedwithenergeticHeionsandheavyionstounderstandhardeningofthealloysduetoheliumaccumulationandcascadedamageproduction.
简介:ThemagneticpropertiesofCeRhln5arestudiedbyfirst-principlescalculation.Spin-orbitcouplingisconsideredaswellasdifferentcorrectionsincludinglocaldensityapproximationpluson-siteCoulombinteractionU(U=1,1.5,3eV)andorbitalpolarization.TheresultsshowtheexistenceofonlymoderatecorrelationinCeRhln5andCe-4felectronsareontheborderoflocalizationanditinerancy.Theeffectofpressurebychangingthevolumeoftheunitcellisalsostudied.
简介:Afacilesyntheticroutetotwoseco-eudesmane,4,5-dioxo-10-epi-4,5-seco-γeudesmane(1)and4,5-dioxo-10-epi-4,5-seco-γ-eudesmol(2)from(+)-dihydrocarvonehasbeendescribed.Avoidingexpensivereagents,thishighlyeconomicmethodespeciallysuitsforthesynthesisof4,5-seco-eudesman-typeandophianon-typesesquiterpeneswithadoublebondatposition11and12.
简介:在n+~(10)B反应,~5He簇排放与更新的水平计划和新光模型被讨论了参数。在这篇论文,与~5He排放有关的反应隧道详细被列出。由为轻原子核使用新反应模型,为n+~(10)的全部的出去的中子的thedouble微分的生气的节在E_n=14.2兆电子伏的B反应被计算了,并且结果与大小相当同意很好。特别地,在精力尖的系列,对全部的出去的中子双differential十字节的从~5He排放的贡献也被分析了,并且在14.2兆电子伏被给了的E_n=的60°的partialenergy尖的系列。一旦~5He排放被考虑,计算结果显示那,有在低精力区域的全部的出去的中子的double-differentialmeasurements的试穿能被改进。因此,在轻原子核的反应过程适当地认为~是5He排放是必要的。
简介:Theapplicationof5'-nitrosalicylfluorone(5'-NSF)-molybdenum(Ⅵ)complexasaspectroscopicprobewasstudied.InthebuffermediumofHOAc-NaOAcat3.45andinthepresenceofPVA124microemulsion,5'-NSF-Mo(Ⅵ)complexcombinesproteinrapidlytoformastablecompound,leadingtoanabsorbancedecreaseat525nmof5'-NSF-Mo(Ⅵ)complex.Accordingtothischange,microdeterminationofproteinhasbeendescribed.Bovineserumalbumin(BSA)couldbedeterminedinthelinearrangeof0—16μg·mL^-1withthedetectionlimitof11ng·mL^-1.Manyaminoacidandmetalionsstudieddonotinterferewiththeassay.Themethodpossesseshighsensitivityaswellashighselectivity.Itcanbeusedtodetermineproteininhumanurineandmilkpowdersuccessfully.Therelativestandarddeviationsareinallinstanceslessthan4.7%,andtherecoveriesarebetween97.6%and106.0%.Moreover,thebindingnumberofBSAwiththecomplex,whichisdeterminedbyusingmolarratio,Rosenthanlgraphicandsloperatiomethods,isingoodagreementwitheachother.