简介：正如当今流行的CRM是用来改善与客户的关系一样,SRM(SupplierRelationshipManagement,供应商关系管理)是一种致力于改善与供应链上游供应商关系的管理思想和软件技术解决方案,其目的就是通过与供应商建立长期、紧密的业务关系,并通过对双方资源和竞争优势的整合来共同开拓市场,扩大市场需求和份额,降低产品前期的高额成本,最终实现企业与供应商的双赢.

简介：此成语来源于西方风尚。十八世纪中叶，英国上流社会的一个文艺团体的成员们，蔑视世俗的时尚穿著，一个个穿蓝色长统袜出席文艺座谈会，而不穿正式的礼服，引起了一时轰动。由于这一运动是由妇女发起的，所以人们就把耽于书卷而对家务漠不关心的妇女称为abluestocking；亦常用来讥讽那些附庸风雅、卖弄学问、性情孤僻、不理家务的女书呆子和女学究。

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简介：From1951,whenTibetwonpeacefulliberation,to2000,policiesfortheTibetanlanguageexperiencedchangesinthreeseparatephases.Measurestakenduringthesethreeperiodsweredifferent,butthebasicpolicyremainedlargelythesame.

简介：YANGJie-bin,bornin1929,aprofessor,seniorconsultantdoctorandsupervisorofdoctoralcandidates,graduatedfromChengduCollegeofTraditionalChineseMedicinein1959.tieisoneofthefirst-batch500eminentandseniorinstructors,andenjoysthespecialallowancefromtheStateCounc

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简介：AnincreasingnumberofgeologistsinSouthAmericahaveturnedtheirattentiontoisotopegeologyasatoolinthewidercontextoftheEarthSciences.Asaresult,aseriesofsymposiaontheSouthAmericanisotopegeology(SSAGI)hasbeenorganizedeverytwoyearstoprovideanappropriateforumfordiscussionofmethodsandapplicationsofstableandradiogenicisotopes.

简介：ThispaperdealswiththestructureoftheY^Ⅲcomplexwithaminopolycarboxylicacids,synthesisandstructuraldeterminationofthecomplex(NH4)[YⅢ(edta)(H2O)3]·3H2O(edta=ethylenediaminetetraaceticacid).Thecrystalandmolecularstructuresofthe(NHO[YⅢ(edta)(H2O)3]·3H20complexhavebeendeterminedbysingle-crystalX-raystructureanalysis.Thecrystalofthecomplex(NH4)[YⅢ(edta)(H2O)3]·3H2Obelongstoorthorhombiccrystalsystemandfdd2spacegroup.Thecrystaldataareasfollows:a=1.9441(9)nm,b=3.5459(18)nm,c=1.2196(6)nm,V=8.407(7)nm3,Z=16,M~=503.25,Dc=1.590g.cm3,μ=2.844mm-1andF(000)=4160.ThefinalRandRware0.0486and0.1332for3388(I>2σ(I))uniquereflections,respectively.Thecomplexanion[YⅢ(edta)(H2O)3]hasapseudo-mono-cappedsquareantiprismaticnine-coordinatestructureinwhichthesixcoordinateatoms(twoNandfourO)arefromanedtaligandandthreewatermoleculescoordinatetothecentralYⅢiondirectly.Fromtheresultsitcanbepredictedthattheymioncanalsoformanine-coordinatecomplexwithttha(=triethylenetetraminehexaaceticacid)ligand,sotheradioactivecomplexanion[99YⅢ(Httha)]2-cansupplyafreecarboxylgroup(-CH2COOH)beingusedformolecularembellishmenttoformtheTDDSforthetreatmentofcancers.

简介：ＥＤＧＥＲＥＣＯＮＳＴＲＵＣＴＩＯＮＯＦＰＬＡＮＡＲＧＲＡＰＨＳＷＩＴＨＭＩＮＩＭＵＭＤＥＧＲＥＥＡＴＬＥＡＳＴＴＨＲＥＥ－（ＩＶ）￥ＦＡＮＨｏｎｇｂｉｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＳｈａｎｄｏｎｇＵｎｉｖｅｒｓｉｔｙ，Ｊｉ＇...

简介：TheauthorsconsidertheEulerequationsforacompressiblefluidinonespacedimensionwhentheequationofstateofthefluiddoesnotfulfillstandardconvexityassumptionsandviscosityandcapillarityeffectsaretakenintoaccount.Atypicalexampleofnonconvexcon-stitutiveequationforfluidsisVanderWaals'equation.Thefirstordertermsofthesepartialdifferentialequationsformanonlinearsystemofmixed(hyperbolic-elliptic)type.Foraclassofnonconvexequationsofstate,anexistencetheoremoftravelingwavessolutionswitharbitrarylargeamplitudeisestablishedhere.Theauthorsdistinguishbetweenclassical(compressive)andnonclassical(undercompressive)travelingwaves.ThelatterdonotfulfillLaxshockinequali-ties,andarecharacterizedbytheso-calledkineticrelation,whosepropertiesareinvestigatedinthispaper.

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简介：ThispaperreportsasimpleandhighlyselectivemethodforpreconcentratingandseparatingoftracePd(II)andPt(IV)withsilicagelbondedbyaminopropyl-benzoylazo-4-(2-pyridy-lazo)-resorcinol(ABPR-SG).ABPR-SGisstableinsolutionfrom6mol/LHCltopH7.0andincommonorganicsolvents.ThemaximumadsorptivecapacityofPd(n)onABPR-SGis362μmol/g.AfterpreconcentrationandseparationbyusingABPR-SGcolumn,Pd(II)andPt(IV)ofμg/Llevelinartificialwatersamplescanbemeasuredreliablybycommonspedrophotometry.ThemaximumconcentrationfactorsofPd(II)andPt(IV)onABPR-SGcolumnare143and125respectively.ThechromatographiccolumnpackedwithABPR-SGcanbereused.Themethodissimpleandefficient.

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