A Study of the Crustal Stability in the Yangtze Three Gorges Area

TheThree GorgesHydroelectricPow erProjectontheYangtzeRiverwillstorewaterandgenerateelectricpowerin 2 0 0 3.Itsgreatdamwasdesignedtobe 1 85mhigh ,withaninstallingcapa bilitytobe 1 7.6 8millionkWh ,andatotalreservoirstoragetobe 39 3billionm3 .ThisisanimportantmatterinChina seconomicconstructionandalsoamonumentalprojectinChinesehistory(Fig 1 ) [1 ] .Thus,thecrustalstabilityforthegreatdamhasattractedmuchat tention .Theauthorshadcarriedoutfieldinvestigationanddemonstratedthefeasibilityoftheeng…     

Bioinformatics analysis of SARS-Cov M protein provides information for vaccine development

Severalmonthsago ,anoutbreakofsevereacuterespiratorysyndrome (SARS )startedtospreadaroundtheworld .Asofthiswriting (May 14 ,2 0 0 3) ,morethan 75 0 0 personshavebeeninfectedinasmanyas 2 9countries[1] .The pathogencausingSARShasalreadybeenidentifiedtobeSARS Covbyanumberoflaboratoriesworldwide[2 ,3] .Severedis easesinanimals ,suchasthediseasescausedbyporcinetransmissiblegastroenteritisvirus (TGEV ) ,murinehepatitisvirus (MHV)andporcinehemagglu tinatingencephalomyelitisvirus (PHEV ) ,ha…     

Effects of Genistein and Daidzein on the Proliferation, Invasion, Migration and Adhesion of Melanoma Cells

IntroductionGenistein and daidzein (Fig.1 ) ,two majorisoflavonoids in soybeans,were reported to playimportant roles in cancer prevention[1 ,2 ] .Previousstudies demonstrated that genistein and daidzeininhibited the growth of leukemia,breast,colonand prostate cancers[38] .Our earlier studies alsodemonstrated that daidzein enhanced the immunefunction in mice[9,1 0 ] . These functions madegenistein and daidzein promising candidates forcancer prevention. However,it is usually themetastatic disse…     

Cloning, Expression of Crocus sativus Phytoene Desaturase Gene and Preparation of Antiserum against It

0　IntroductionCarotenoidsareisoprenoidmoleculesneededin plantsforgrowthanddevelopment.Theyparticipateinlightharvest inginphotosyntheticmembranesandprotectthephotosyntheticapparatusfromexcessivelightenergybyquenchingtripletchloro phylls,superoxideanionradicalsandsingletoxygen[1 ] .Further more,theyareessentialcomponentsofsome pigment proteincomplexes[2 ] andareprecursorsofabscisicacid (ABA)oftheplanthormone[3] .Carotenoidsaresynthesizedandaccumulatedinplastidsbynuclear encodedenzymesinplasti…     

A Note on the Prime Spectrums of Character Rings of Finite Groups

0Introduction LetGbeafinitegroupoforder|G|=g,andletR(G)denotethecharacterringofG,whichisgeneratedbyalltheirreduciblecomplexcharactersofG.LetZbetherationalintegerringandNthesetofnatural numbers,andletZ[ω]betheintegralextensiongeneratedbyaprimitiveg throotωofunity.SupposethatSisasubringof thealgebraicnumberfieldsuchthatZ[ω]S.πisasetofra tionalprimenumbersdefinedasfollowsπ={p｜pisarationalprimenumbersuchthatp-1S}.Definition1WecallthataconjugacyclassCofthefinite groupGisaπregularconju…     

Discussion on the relationship between Δ V_(EB) and I_E presented in thermal resistance standard IEC60747-7 Version 2000

ThethermalresistancestandardinIEC74 7 7iswidelyacceptedandhasbeenusedtillnow .Itwaspublishedin 1988,andconfirmedin 1994and 2 0 0 0 ,respectively .ThethermalresistancestandardinGB/T 4 5 87 94ofChina[1] wasbasedontheIEC 74 7 7[2 ] .TheBSIEC 6 0 74 7 7:2 0 0 0 [3] ofUnitedKing domalsocamefromtheIEC 74 7 7.Fig .1(a)showsthecorrespondingFigs . 2 3and 2 4inIEC 74 7 7.Fig .2 3hastwoI Vcurves ,whichareI Vcurvesoftheemittercurrent (IE)andemitter basevoltage(VEB)atthejunctiontemperaturesT(…     

Effect of Nano Red Elemental Selenium on GPx Activity of Broiler Chick Kidney Cells in vitro

0　IntroductionSelenium(Se)isanessentialtraceele mentwithaverynarrowmarginbe tweennutrientlevelsofintakeandtoxicity .Anti oxidationisthemostimportanteffectofSe’sbiologicalfunction .Seisanessentialcomponentandactivesiteofcellularglu tathioneperoxidase (GPx) [1 ] .GPxistheoneofmainanti oxidizingenzymes,clearingdeleteriousperoxides,suchasH2 O2 ,fattyacidperoxide,phospholipidhydroperoxide,andsoon[2 4] ,toprotectbiologicalmem braneandbiologicalbigmoleculefromoxida tivedamageintissues[5 \〗.It…     

Einstein-Khler metric on Cartan-Hartogs domain of the second type

ItiswellknownthattheBergman ,Carath啨ｏｄｏｒｙ ,KobayashiandEinstein K hlermetricsarefourclassicalinvariantmetricsincomplexanaly sis .TheBergmanmetric(denotedbyB)wasintro ducedbyBergmanforone[1] in 192 1orseveralvari ables[2 ] in 1933.Carath啨ｏｄｏｒｙｉｎｔｒｏｄｕｃｅｄｔｈｅｉｎｖａｒｉ antdistancein 192 6 [3] andReiffenintroducedthein variantmetricin 196 3[4 ] ,thereforetheCarath啨ｏｄｏｒｙｍｅｔｒｉｃ (denotedbyC)isalsocalledCarath啨ｏｄｏｒｙ Reiffenmetric .TheKobayashimetric (d…     

Sensitive Determination of DNA by RLS Enhancement of Metal Ions

0　IntroductionThequantitativeanalysisofnucleicacids,especiallythemi cro determinationofnucleicacids,isbecomingmoreandmoreimportantinmanybiologicalstudies.Recently ,apromisingspectraltechnique ,whichwasbasedonthemeasurementofen hancedresonancelightscattering (RLS) [1 ,2 ] ,hasgivenrisetostronginterestbyanalystsandbiochemistsfornucleicacidsandproteinassay[3 9] .Uptonow ,manykindscompoundshavebeenfoundRLSenhancementwhilebindingtoDNA ,andallthesecompoundsarecharacterizedofpositivechargewhicha…     

Comparison of Inactivation and Unfolding of Calf Intestinal Alkaline Phosphatase in Guanidinium Chloride Solution

IntroductionCalf intestinal alkaline phosphatase(CIP,EC3 .1 .3 .1 ) is a metalloenzyme which catalyzes thenonspecific hydrolysis of phosphate monoesters[1 ] .The X-ray crystal structure of bacterial alkalinephosphatase has been reported to0 .2 nm resolutionin the presence of inorganic phosphate[2 ] . Theactive site is a pocket containing a tight cluster oftwo zinc ions (0 .3 9nm separation) and onemagnesium ion (0 . 5 and 0 .7nm from two zincions) .CIP also contains zinc and magnesium ions…     

Management of Associations in the IRBAC 2000 Model

0 IntroductionThe secure interaction between two or more administra-tive domainsis a major concern.There are many differ-ent schemes to resolve the problem, such as DRBAC[1],RT[2],SPKI[3],and KeyNote[4]. Kapadiaet al[5]proposedthe IRBAC (Interoperable Role-Based Access Control) 2000model ,whichcanaccomplishthe secureinteraction by dynam-ic role translations between administrative domains that utilizethe RBAC(role-based access control) model[6]. An adminis-trative domainis defined as…     

Linearly Coupled Synchronization of the New Chaotic Systems

0IntroductionCahdaeoss[ 1h]a.sI bne e1n9 6i3nt ,en Lsiovreelnyz sftouudniedd t ihne t fhires tla scta ntohnrieceal d eact--tractor[2 ,3].In 1999 , Chen,et alfound another si milar buttopologically not equivalent chaotic attractor[4 ,5]. In 2002 ,Lu,et alfound a chaotic system[6],bearing the name of theLu system.In the second year , Chen and Lu introduced thenotion of generalized Lorenz canonical form(GLCF) , whichcontains the Lorenz system(τ∈(0,∞))and Chen system(τ∈(-1,0))as two ext…     

Kinetics of Growth and Nutrient Consumption in the Culture of Trichosanthes kirilowii Hairy Root

IntroductionThe hairy roots produced by Agrobacteriumrhizogenes infection are characterized by highgrowth rate and genetic stability. Thesegenetically transformed roots can produce similarhigher levels of secondary metabolites than intactplants[1] ,so hairy root cultures are a promisingmethod for producing valuable secondarymetabolites of many plants.Recently,two kindsof ribosome- inactivating proteins ( RIPs) [2 ] ,trichosanthin ( TCN ) [3 ] ,and TAP 2 9[4] wereidentified in Trichosanthes…     

Palaeoclimate simulation of Little Ice Age

Promotedbytheinternationalresearch projectsofPAGESandCLIVAR ,thestudiesonclimaticandenvironmentalchangesinthepast 2 0 0 0yearshavedrawntheattentionofgeologistsandpalaeoclimato logistsallovertheworld[1,2 ] .AmongthemthecoldeventoftheLittleIceAge (LIA)isparticularlythemostattractiveone[3～ 10 ] ,whichisthenearesttypicalcoldperiodintheglobalrangefrommodernage ,andhadaprofoundimpactuponhumansociety[11] .Addi tionally ,moreknowledgeaboutthecauseoforiginanddynamicmechanismofLIAmayenrichandpe…     

Synthesis of Novel Covalent-linked Linear Porphyrin-Thiophene Copolymers

0　IntroductionTheconstructionofmacro molecularsystemcontainingmul tipleredoxcentersorphotosensitizersisanimportantsub jectinthedesignofmolecularelectronicdevices[1 ,2 ] .Forsuchobjectives,systematizationofdonor (redoxcenter) acceptortriadmoleculesintolargemolecularsystemsisoneofthemostfeasibleapproaches,becausetheexquisiteincorporationofthephotosensi tizersandsuitableelectrondonorsand /oracceptorsintoapoly mericchainisusefulforvariousmolecularsystembasedonphoto inducedelectrontransfer[3 ,4] …     

Application of the Three-Dimensional Shallow Sea and Continental Shelf Mode for Inversion of Undercurrent

0Introduction Muchresearchworkonoceancirculationhasbeendoneandsomenumericalmodels[14]havebeendeveloped.Athreelayer3DmodelwasraisedbyLeendertseandLiu[5].Butthesolutionofthemodelinthe(x,y,z)coordinatesys temrequireshugecomputationalquantity.XuDongfenget al[6]andFangGuohongetal[7]setupa3Dmodeltocalculateoffingcirculation.A3Dmodelinσcoordinatesystemwasap pliedtoEuropeanNorthSeabyDuranceandHughes[8],butnonlineartermswereignored.Differentmodelsareadoptedin simulationfordifferentproblems.Thea…     

Key points on temperature change of the past 2000 years in China

Itisimportanttostudythetemperaturechangeduringthepast 2 0 0 0 yearsforunderstandingtheis suessuchasthegreenhouseeffectandglobalwarminginducedbyhumanactivities .Chinahasadvantagesinreconstructinghistoricalclimatechangeforitsabun dantdocumentedhistoricalrecordsandothernaturalevidenceobtainedfromtreerings ,lakesediments ,icecores ,andstalagmite .SinceDr .Chulaidafounda tiononthestudyoftemperaturechangeinChinaforthepast 5 0 0 0 years[1] ,significantprogressinthestudyoftemperaturechangeofthepast 2…     

Evidence of Positron Trapping into Defects in Zn-Doped GaAs

0　IntroductionPositronlifetimespectroscopy ,whichisdirectlysensitivetovacancy typedefects,isanestablishedmethodforstudyingthedefectinsemiconductor[1 ] .Uptonow ,manyworkshavebeenreportedonn typeGaAsandsemi insulating (SI) typeGaAsusingthistechnique.Ithasbeenprovedthatpositronanni hilationspectroscopyisaefficientmethodtodetectdefectsinsemiconductor[2 ,3] .However,muchlessstudiesconcernedwithp typematerialshasbeendone .Thereisadiscrepancyonpositrontrappingintodefectsin p \|typeGaAs.Somestu…     

Blow-up of the Solutions of the Initial Boundary Value Problem of Camassa-Holm Equation

0IntroductionThe Cauchy problemof Camassa-Hol mequationut-uxxt 3uux=2uxuxx uuxxx,t >0,x∈Ru(0,x) =u0(x) ,x∈R(1)was derived in Ref .[1] to describe the motion of solitarywaves of shallow water ,whereurepresents thefree surface ofthe water above a flat bot…     

Preliminary study on the orbit cross-calibration of CMODIS by SeaWiFS

MostareasofChinaSeasbelongtocase 2water ,andthealgorithmbasedontheratioofgreentoblueisnotsuitabletothoseareas[1] becausetwoormoresubstanceswithdifferentopticalpropertiesarepre sentedwhichdonotco varywithchlorophyllacon centration .Thesemightbewaterwithexceptionalplanktonblooms (suchasredtides) ,discoloredbyretainedandorganicsuspendedmaterialsandthedis solvedorganismmaterial (DOM ) ,suchasacids .Itis,therefore ,essentialtodevelopmorechannelswithmoresensitivesensorsforChinesecoastalwaterdetec …