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简介：Concreteinreinforcedconcretestructure(RC)isgenerallyundersignificantcompressivestressload.Toguaranteerequiredqualityandductility,varioustestshavetobeconductedtomeasuretheconcrete'scompressivestrengthbasedonACI(AmericanConcreteInstitute)code.Investigationsofrecentdevastatingcollapsesofstructuresaroundtheworldshowedthatsomeofthecollapsesdirectlyresultedfromthepoorqualityoftheconcrete.Thelessonlearnedfromthesetragediesisthatguaranteeinghighqualityofconcreteisoneofthemostimportantfactorsensuringthesafetyofthereinforcedconcretestructure.Inordertoensurehighqualityofconcrete,anewmethodforanalyzingandevaluatingtheconcreteproductionprocessiscalledfor.Inthispaper,theindicesoffitandstabledegreeareproposedasbasistoevaluatethefitnessandstabilityofconcrete'scompressivestrength.Thesetwoindicesarecombinedtodefineandevaluatethequalityindexofthecompressivestrengthofconcrete.Principlesofstatisticsareusedtoderivethebestestimatorsoftheseindices.Basedontheoutcomeofthestudy,aconcretecompressivestrengthqualitycontrolchartisproposedasatooltohelptheevaluationprocess.Finally,anewevaluationproceduretoassessthequalitycontrolcapabilityoftheindividualconcretemanufacturerisalsoproposed.

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简介：Thinfilm/substratematerialsystemshavebeenwidelyusedinvariousindustriessuchasaerospace,automotive,marineandelectronics.Oneexampleisthermalbarriercoatings(TBCs):TBCsareextensivelyappliedtometalliccomponentsongasturbineenginesinordertoprotectthemfromhighandprolongedheatloads,andtheyplayanessentialroleintheaircraftindustry.Anotherexampleislaminatedpolymermatrixcomposites(PMCs),reinforcedwithfiberssuchascarbon,glassoraramid:Thesematerialshavebeenextensivelyemployedinavarietyofapplicationsduetotheirsuperiorpropertiesandtheimprovingeaseandcost-effectivenessoffabricatingthem.Theevaluationofmechanicalpropertiesforthinfilm/substratematerialsystemsisimperativeformoreefficientuseofthesematerialsystemsandfurtherimprovements.

简介：Basedonthedatasynthesissimulationandtheactualprocessingoftheairgunseismicsourcesignal,threequantitativeindicatorsofsignal-to-noiseratio,waveformcorrelationcoefficientandphaseoffset,aresuperimposed.Wesystematicallyevaluatethefunctionsofthefollowingthreestackmethodsincludinglinearity,phaseweightingandS-transformintheextractionofweaksignalsunderstrongbackgroundnoiseandquantitativelyestimatethereliabilityofthestackresults.Throughthecomprehensivediscussionoftheabovethreemethodsofstackresults,thepreliminarycomparativeanalysisbelievesthatthelinearstacksignal-to-noiseratioislow,butthewaveformdistortionisminimal;thephase-weightedsuperimposedsignal-to-noiseratioishighandthephaseoffsetissmall,buttheresultsofthewaveformqualityandlinearstackarelargerthanthedeviation;theS-transformstackhasarelativelyhighersignal-to-noiseratioandasmalllossofwaveformamplitude,butthereisacertainphaseshiftphenomenon.Itisthereforesuggestedthatlinearstacktechnologyshouldbeusedwhentherequirementsofbothwaveformqualityandtimeprecisionarehigh.However,theselectionofthestackmethodwhentheairgunsourceexcitationislimitedshouldbeemphasized.Ifhighfidelityisrequired,theS-transformstackmethodshouldbeselected;iftherequiredtimeishigh,accuracycanbeselectedbyphase-weightedstackmethodtoachievereasonableextractionofweaksignals.

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简介：Screeningandearlydiagnosisofgastriccancerplayimportantrolesinreducingthemortalityofgastriccancer.AvastamountofstudydataongastriccancerscreeningandearlydiagnosishasbeenaccumulatedinandoutofChinainthepastdecades.Thepracticeofgastriccancerscreeninghasalsobeenefficientlycarriedoutindifferentcountriesandregions.However,nowidelyacceptedprincipleofpopulationscreeningforgastriccancerhasbeendevelopedyet.Screeningforgastriccancerrequiresextensiveexplorationboththeoreticallyandpractically.Thisarticlefocusesonthemethodandprogramofgastriccancerscreeningbasedonpopulation.Moreover,thecurrentsituationofgastriccancerscreeninganditsevaluationareevaluated.

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简介：Determiningtheinterfacialpropertiesofthermalbarriercoatings(TBCs)isimperativefortheirdurabilityevaluationandfurtherimprovements.Aceramiccoating(topcoat)andaNiCoCrALYbondcoatwereatmospheric-plasma-sprayed(APS)onastainlesssteelsubstrate.Amodifiedthree-pointbendingtestwasadoptedtoinitiateandpropagatethetopcoat/bondcoat(TC/BC)interfacialcrack.Afteracompletedelamination,thefracturesurfaceswereexaminedbyanopticalmicroscope,whichshowsthatthecrackingplanewasmerelyontheTC/BCinterface.Basedontheexperimentalresultsofload–displacementandcracklength–displacement,thestrainenergyreleaserateGforcrackpropagationwascalculated,andtheaveragedmagnitudewas77.1J/m2.Repeatableresultshaveindicatedthatthemethodcanbeusedfortheevaluationofinterfacialfracturetoughnessinthermalbarriercoatingsandothermulti-layerstructures.

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简介：Duetohistoricreasons,thereareseveralhumansettlementsinnaturereservesandnationalparks,whichmayconstituteathreattobiodiversity.Establishmentofnaturereservesmayhowevergenerateconstraintsfordevelopmentoflocalcommunitiesresidinginthesereserves.ThevillageecosystemofZhuanjinglouVillageinWolongNatureReserveincludespopulation,farmingandlivestock(domesticandalpine)andforestecosystem.Anemergyanalysisofagro-ecosystem(includingthefarmingandlivestockecosystem)andenergyconsumptioninZhuanjinglouVillageindicatesthatlivestockecosystemplaysanimportantroleinvillageecosystem,whichmaybethesourceofgreatpressureonthestateofthelocalenvironment.Theincreasingratioofelectricityinenergyconsumptionmayplayapositiveroleforenvironmentalconservation.Despitesomesuccessfulexperiences,therearesomeremainingissuesthatneedtobeaddressedintheecologicalrehabilitationofthevillageecosystem.

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简介：Evaluationofregionaltourismcompetitivenesshasbeenahotissueoftourismgeographyandregionaleconomicsinrecentyears.ThisstudyintroducessystemtheoryandProfessorPorter'sNationalDiamondModelintoconstructingtheevaluationindexsystemofregionaltourismcompetitiveness,whichincludesfourdecisivefactors,namelyproductionfactor,market,industryandsupportcompetitiveness.AndbycomprehensiveuseofsubjectiveandobjectivemethodslikePrincipalComponentAnalysis(PCA)andAnalysisHierarchyProcess(AHP)theappraisedvalueswerecalculated.Atthesametime,themethodwasappliedtodynamicdemonstrationanalysisofthetourismcompetitivenessoftheprovincesinSouthwestChinafrom2001to2005.Theresultshowsthattheirtourismcomprehensivecompetitivenesshasdistinctdifferences.ThecomprehensivecompetitivenessofSichuanandYunnanarebetter,ChongqingandGuangxiareinthemiddle,andGuizhouandTibetareweak.Accordingtothecompetitivenessranksin2001-2005,comprehensive,productionfactor,industryandsupportcompetitivenesschangedalittleandmarketcompetitivenesschangedalot.Thiscompetitivepatternhasbeenmademostlybecausenaturalresourceconditionsandeconomicdevelopmentlevelsoftheprovincesareverydifferentandaredifficulttobechangedinashortperiod.

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简介：Danshensu[3-(3,4-dihydroxyphenyl)lacticacid,DSS],oneofthesignificantcardioprotectivecomponents,isextractedfromtherootofSalviamiltiorrhiza.Inthepresentstudy,anesterprodrugofDanshensu(DSS),palmitoylDanshensu(PDSS),wassynthesizedwiththeaimtoimproveitsoralbioavailabilityandprolongitshalf-life.TheinvitroexperimentswerecarriedouttoevaluatethephysicochemicalpropertiesandstabilityofPDSS.AlthoughthesolubilityofPDSSinwaterwasonly0.055mg·mL~(-1),itssolubilityinFaSSIFandFeSSIFreached4.68and9.08mg·mL~(-1),respectively.Octanol-waterpartitioncoefficient(logP)wasincreasedfrom-2.48ofDSSto1.90ofPDSS.PDSSwasrelativelystableintheaqueoussolutioninpHrangefrom5.6to7.4.Furthermore,thepharmacokineticsinratswasevaluatedafteroraladministrationofPDSSandDSS.AUCandt1/2ofPDSSwereenhancedupto9.8-foldand2.2-fold,respectively,comparedtothatofDSS.Cmaxwas1.67±0.11μg·mL~(-1)forPDSSand0.81±0.06μg·mL-1forDSS.Thus,theseresultsdemonstratedthatPDSShadmuchhigheroralbioavailabilityandlongercirculationtimethanitsparentdrug.

简介：In"HaveBothHardandSoft"systems,thesofttargetsandhardtargetsaredividedintotwodistincttargetsystem.Themeasuredresultsofsofttargetsystemareregardedasamatrixwithintervalnumbers.OnthebasisofTopsismethod,wediscussanewTopsisevaluationmethodon"HaveBothHardandSoft"systems,whichcombinedsofttargetswithhardtargets.

简介：SincetheStateCouncilissuedTheDecisionoftheStateCouncilonAcceleratingtheCultivationandDevelopmentofStrategicEmergingIndustriesandtheconstructionoftheCentralPlainsEconomicZonewasregardedasanationalstrategy,acceleratingthecultivationanddevelopmentofstrategicemergingindustrieshasbeenplacedtoaprominentpositiontopromotetheupgradingofthestrategicadjustmentoftheeconomicstructureandindustrialtransformation.Inthispaper,threeprimaryindexesandeightsecondaryindexesareselectedtoconstructthegrowthevaluationindexsysteminHenan’sstrategicemergingindustries;BasedonFactorAnalysis,theenterprisegrowthofstrategicemergingindustriesinHenanProvincewasevaluatedcomprehensively.TheconclusionprovidesareferencefortheoveralldevelopmentofstrategicemergingindustriesinHenan.

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