简介：ＯＮＭＥＣＨＡＮＩＣＡＬＰＲＯＰＥＲＴＹＯＦＣＯＮＳＴＲＡＩＮＴＷｅｉＹａｎｇ（韦杨）；ＬｉａｎｇＬｉｆｕ（梁立孚）；ＬｉａｎｇＺｈｏｎｇｗｅｉ（梁忠伟）（ＲｅｃｅｉｖｅｄＳｅｐ．６，１９９４；ＣｏｍｍｕｎｉｃａｔｅｄｂｙＣｈｉｅｎＷｅｉｚａｎｇ）Ａ...

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简介：寻物启事(LostProperty)是一种应用文体：考试时不常出现。LostProperty有两个意思。一是寻物启事。即失主丢失东西后，写的寻物启事。通常是一个表格。下面写上Pleasecontacttheownerifyoufoundanyofthethingslisted或Pleasetelephonetheperson(s)listedifyouhavefoundanyofthethingsshownon

简介：Thispaperprovesthat,underthehypothesisg(t,0,0)≡0andsomenaturalassumptions,thegeneratorgofabackwardstochasticdifferentialequationcanbeuniquelydeterminedbythecorrespondingg-expectationswithallterminalconditions.ThemainresultofthispaperalsoconfirmsandextendsPengShige'sconjecture.

简介：Considerasystemcontainingatypeofndevices.Eachdeviceconsistsofmparts.Givenmnpartsforndeviceswithdifferentworkingprobabilities,howdowegroupthemintondevicessuchthatthesystemismostreliable.Amonotonicgroupingmeansthatthebestpartsareputtogether,thenthebestremainingpartsareputtogether,etc..Asufficientandnecessaryconditionforsuchgroupingbeingoptimalwillbegiveninthispaper.Asanapplication,weshowthatthemonotonicgroupingisoptimalforthetwo-stagek-out-of-nsystem.Whenm=2,wealsostudythegroupingthatthebestpairstotheworst,thesecondbestpairstothesecondworst,etc.,associatedwitharedundantdeviceproblem.

简介：Thechemicalcomposition,fibercharacteristics,crystallinestructure,mechanicalpropertiesandthermalbehaviorofthefivespeciesofbamboo(Phyllostachyseduliscv.Pachyloe,Bambusatootisk,Arundinaiaamabilis,B.vulgariscv.Vittata,andDendrocalamusaffinis)werestudiedwithIR,X-ray,DSCandchemicalanalyses.Theresultsindicatedthatthebenzene-ethanolextractivecontentofbamboowashigherthanthatofwood,thecontentofligninandthecontentofpentosanwere19.1%-25.3%and14.9%-...

简介：Inthispaper,westudynon-cosemisimpleHopfalgebrasthroughtheirunderlyingcoalgebrastructure.Weintroducetheconceptofthemaximalpointedsubcoalgebra/Hopfsubalgebra.Foranon-cosemisimpleHopfalgebraAwiththeChevalleyproperty,ifitsdiagramisaNicholsalgebra,thenthediagramofitsmaximalpointedHopfsubalgebraisalsoaNicholsalgebra.WhenAisoffinitedimension,weprovideanecessaryandsufficientconditionforA’sdiagramequalingthediagramofitsmaximalpointedHopfsubalgebra.

简介：AcommutativeringRiscalledextendingifeveryidealisessentialinadirectsummandofRR.Thefollowingresultsareproved:(1)C(X)isanextendingringifandonlyifXisextremelydisconnected;(2)Spec(R)isextremelydisconnectedandRissemiprimeifandonlyifRisanonsingularextendingring;(3)Spec(R)isextremelydisconnectedifandonlyifR/N(R)isanextendingring,whereN(R)consistsofallnilpotentelementsofR.Asanapplication,itisalsoshownthatanyGelfandnonsingularextendingringisclean.

简介：三新diarylheptanoids，即，钠(5S,2E)-1,7-bis(4-hydroxyphenyl)-1-hydroxy-2-hepten-5-sulfonate(1)，钠(5R,2E)-1,7-bis(4-hydroxyphenyl)-1-hydroxy-2-hepten-5-sulfonate(2)和3,5-diacetoxy-1-(3-methoxy-4,5-dihydroxyphenyl)-7-(4-hydroxy-3-methoxyphenyl)heptane(3)从姜officinale的根茎被孤立。新混合物的结构根据分光镜的方法被阐明。3的抗氧化剂活动在包含DPPH自由激进分子和超级氧化物阴离子激进分子的vitro模型旁边是assayed。

简介：Tobuildtheharmonioussocietyneedstheeffectofmorality.Therearevariouskindsofmoralvalues.Moravaluescanbedividedintoproperonesandimproperonesaccordingtowhetherthesocialbenefitisbiggerthanthesociacostofthemoralbehavior.Theformerishelpfultotheoptimalallocationofresourcesandimprovetheformationoftheharmonioussociety;whilethelatterisharmfultotheoptimalallocationofresourceandbadtotheformationoftheharmonioussociety.Theproperandscientistmoralvaluesinclude:sustainabledevelopmentviewonecology,fair,jusandwinwinviewonmorality,credibility,rightviewonrichandpoor,rightviewonconsumptionandsoon.Tobuildtheproperandscientificmoralvalue,themoreimportantwayisbuildingpropermoralpropertyrightsinstitutionbyrecognizingproperlyandconstructingmoralpropertyrightsbesideslegislation,settingupmoralsurroundings,valuingmoralpenetration,strengtheningmoraleducationetc.

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简介：Theintellectualpropertyprotectionsystemwasformedwhencivilizationandthecommodityeconomyweredevelopingtoacertainextent,andwasasignificantlandmarkformankindinrespectingtalentsandknowledge.Nowitisplayinganimportantroleinpromotingscientificandtechnicalprogress,culturalprosperityandeconomicdevelopment.Suchanimportantsystemensuresthesmoothperformanceofthesocialisteconomy,makinguponeofthebasicpremisesforconducting

简介：Thediscretizationsizeislimitedbythesamplingtheorem,andthelimitisonehalfofthewavelengthofthehighestfrequencyoftheproblem.However,onehalfofthewavelengthisanidealvalue.Ingeneral,thediscretizationsizethatcanensuretheaccuracyofthesimulationismuchsmallerthanthisvalueinthetraditionalfiniteelementmethod.Thepossiblereasonofthisphenomenonisanalyzedinthispaper,andanefficientmethodisgiventoimprovethesimulationaccuracy.

简介：<正>InthepresentnotethealgebraicindependenceofvaluesofseveralMahlerserieswithcertainparticularanddifferentparametersatalgebraicpointsisestablishedbymeansofatypicalapproximationmethodhandlingtheLiouvilletypeseries.

简介：Theturtleshellisanamazingstructureoptimizedthroughthelong-termevolutionbynature.Thispaperreportstheexperimentalstudyonthemechanicalpropertyatdifferentlevelsandlocations,andthemicrostructureoftheshellfromTrachemysscripta(Red-earturtle)livinginSouthChina.

简介：Biomaterialssuchasbone,teeth,nacreandsilkareknowntohavesuperiormechanicalpropertiesduetotheirspecificnanocompositestructures.Herewereportthatthewoodpecker’stongueexhibitsanovelstrengthandflexibilityduetoitsspecialcompositemicro/nanostructure.Thetongueconsistsofaflexiblecartilage-and-boneskeletoncoveredwithathinlayertissueofhighstrengthandelasticity.Attheinterfacebetweenthecartilage-and-boneskeletonandthetissuelayer,thereisahierarchicalfiber-typedconnection.Itisthisspecialdesignofthetonguethatmakesthewoodpeckersefficientincatchingtheinsectsinsidetrees.Thespecialmicro/nanostructuresofthewoodpecker’stongueshowusapotentialmethodtoenhancetheinterfacialconnectionbetweensoftandhardmateriallayersforbio-inspiredcompositesystemdesigns.

简介：让B(R~n)是所有nxn的集合真实矩阵，S_r有等级r，0鈮?r鈮?n，和S_r~#的所有矩阵的集合弧的数字S_r的明智的连接部件。它知道iswell那S_n=GL(R~n)是一个谎言组并且另外在有尺寸nxn的B(R~n)的光滑的亢奋的表面。但是我们还没单个矩阵S_r的几何建设怎么样知道那，0

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简介：Let{X,Xn,n≥1}beasequenceofi.i.d.randomvariableswithzeromean,andsetSn=Σk=1nXk,EX2=σ2>0,λ(ε)=Σn=1∞P(|Sn|≥nε).Inthispaper,wediscusstherateoftheapproximationofσ2byε2λ(ε)undersuitableconditions,andimprovethecorrespondingresultsofKlesov(1994).