简介：Ｇｅｏｍｅｔｒｉｃａｌｔｅｘｔｕｒｅｓｏｆｆａｕｌｔｓ，ｅｖｏｌｕｔｉｏｎｏｆｐｈｙｓｉｃａｌｆｉｅｌｄａｎｄｉｎｓｔａｂｉｌｉｔｙｃｈａｒａｃｔｅｒｉｓｔｉｃｓＪＩＮＭＡ（马瑾），ＳＨＥＮＧ－ＬＩＭＡ（马胜利），ＬＩ－ＱＩＡＮＧＬＩＵ（刘力强），Ｚ...

简介：摘要This analysis extrapolates information from prior studies and experiences to bring PM&R perspective and intervention to the multidisciplinary treatment of COVID-19. The purpose of pulmonary rehabilitation in COVID-19 patients is to improve symptoms of dyspnea, relieve anxiety, reduce complications, minimize disability, preserve function and improve quality of life. Pulmonary rehabilitation during the acute management of COVID-19 should be considered when possible and safe and may include nutrition, airway, posture, clearance technique, oxygen supplementation, breathing exercises, stretching, manual therapy, and physical activity. Given the possibility of long-term disability, outpatient post-hospitalization pulmonary rehabilitation may be considered in all patients hospitalized with COVID-19.

简介：ＴｈｅｐｈｙｓｉｃａｌｉｍｐｌｉｃａｔｉｏｎｏｆｃｏｄａａｍｐｌｉｔｕｄｅｒａｔｉｏａｎｄｉｔｓｐｏｓｓｉｂｌｅａｐｐｌｉｃａｔｉｏｎＴＩＡＮ－ＺＨＯＮＧＺＨＡＮＧ（张天中）ＹＵＮ－ＳＨＥＮＧＭＡ（马支生）ＲＯＮＧ－ＬＩＡＮＧＨＵＡＮＧ（黄蓉良）Ｉｎ...

简介：Recentstudiesofthemodulationofphysicalpropertiesinoxidethinfilmsbymultiplefieldsarereviewed.Someofthekeyissuesandprospectsofthisareaofstudyarealsoaddressed.Oxidethinfilmsexhibitversatilephysicalpropertiessuchasmagnetism,ferroelectricity,piezoelectricity,metal–insulatortransition(MIT),multiferroicity,colossalmagnetoresistivity,switchableresistivity.Moreimportantly,theexhibitedmultifunctionalitycanbetunedbyvariousexternalfields,whichhasenableddemonstrationofnovelelectronicdevices.

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简介：Insub-tropicalcoastalwatersaroundHongKong,algalbloomsandredtidesareusuallyfirstsightedintheMirsBay,intheeasternwatersofHongKong.Acalibratedthree-dimensionalhydrodynamicmodelforthePearlRiverEstuary(Delft3D)hasbeenappliedtothestudyofthephysicalhydrographyofHongKongwatersanditsrelationshipwithalgalbloomtransportpatternsinthedryandwetseasons.Thegeneral3Dhydrodynamiccirculationandsalinitystructureinthepartially-mixedestuaryarepresented.ExtensivenumericalsurfacedroguetrackingexperimentsareperformedforalgalbloomsthatareinitiatedintheMirsBayunderdifferentseasonal,windandtidalconditions.TheprobabilityofbloomimpactontheVictoriaHarbourandnearbyurbancoastalwatersisestimated.Thecomputationsshowthat:I)Inthewetseason(May～August),algalbloomsinitiatedintheMirsBaywillmoveinaclockwisedirectionoutofthebay,andbetransportedawayfromHongKongduetoSWmonsoonwindswhichdrivetheSWtoNEcoastalcurrent;ii)Inthedryseason(November～April),algalbloomsinitiatedinthenortheastMirsBaywillmoveinananti-clockwisedirectionandbecarriedawayintosouthernwatersduetotheNEtoSWcoastalcurrentdrivenbytheNEmonsoonwinds;thebloomtypicallyflowspasttheeastedgeoftheVictoriaHarbourandnearbywaters.Finally,theroleofhydrodynamictransportinanimportantepisodicevent-thespring1998massiveredtide-isquantitativelyexamined.ItisshownthatthestrongNEtoEwindduringlateMarchtoearlyApril,coupledwiththediurnaltideatthebeginningofApril,significantlyincreasedtheprobabilityofbloomtransportintothePortShelterandEastLammaChannel,resultinginthemassivefishkill.Theresultsprovideabasisforriskassessmentofharmfulalgalbloom(HAB)impactonurbancoastalwatersaroundtheVictoriaHabour.

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简介：Thisarticle,bycomparingthebasicconceptsofsubstrateandsoil,theircompositionofsubstanceandmethodsofmeasuringtheindexesofphysicalandchemicalproperties,analyzesandresearcheswaysofchoosingsubstrateforcultivationwithfacilities.Itindicatesthatthenormalphysicalandchemicalindexesofevaluatingasubstratearebulkdensity,totalporosity,non-capillaryporosity,ratioofbigporositytosmallporosity,thepHandtheelectricalconductivity(EC)valueofthesubstrate.By...

简介：Wehaveinvestigatedthephysicalproperties,includingthemorphology,texture,adhesionandchemicalquality,ofhigh-frequencychemicalvapourdepositeddiamondcoatingsonWC-6%Cosubstrates,whichwerepre-treatedbyatwo-stepetchingmethod.TheresultsindicatethattheincreasingCocontentfrom0.12to3.05%withintheetchingdepthof5μmcausedamorphologytransformationfromprismdiamondtospheruliticdiamond,andatexturetransformationfroma{111}orientationtoa{110}orientation.TheRamanspectrumshowsthatthespheruliticdiamondfilmcontainsmorenon-diamondphases(graphite,amorphouscarbonanddiamond-likecarbon,etc)andhaslowerchemicalqualitythandiamondfilmsonaWC-6%Cosubstrate.Thediamondcoatinggrainsizesbecameaboutfourtimessmallerwhenthedepositiontemperaturesonthesubstratesurfacewerereducedfrom1000to900℃.Comparedwithspheruliticdiamondfilms,theprismdiamondfilmsexhibitbetteradhesionontheWC-6%Cosubstrate.

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简介：TocomparethedevelopmentofphysicalcrustsinthreetypicalcultivatedsoilsofChina,ablacksoil(LuvicPhaeozem),aloesssoil(HaplicLuvisol),andapurplesoil(CalcaricRegosol)werepackedinsplashplateswithcoveredanduncoveredtreatments,andexposedtosimulatedrainfall.Meshescoveredabovethesurfacesofhalfofsoilsamplestosimulatetheeffectsofcropresidueoncrusting.Theresultsindicatedaprogressivebreakdownofaggregatesonthesoilsurfaceasrainfallcontinued.Thebulkdensityandshearstrengthonthesurfaceofthethreesoiltypesincreasedlogarithmicallyasrainfalldurationincreased.Duringthefirst30minofsimulatedrainfall,thepurplesoildevelopeda7-8mmthickcrustandtheloesssoildevelopeda3-4mmthickcrust.Theblacksoildevelopedadistinguishable,butstillunstable,crustafter80minofsimulatedrainfall.Soilorganicmatter(SOM)content,themeanweightdiameter(MWD)ofsoilaggregates,andsoilclaycontentwerenegativelycorrelatedwiththerateofcrustformation,whereasthepercentageofaggregatedispersion(PAD),theexchangeablesodiumpercentage(ESP),andthesiltandsandcontentswerepositivelycorrelatedwithcrusting.Mechanicalbreakdowncausedbyraindropimpactwastheprimarymechanismofcrustformationintheblacksoilwithmorestableaggregates(MWD25.0mm,PAD3.1%)andhigherSOMcontent(42.6gkg~(-1)).Slakingandmechanicaleluviationweretheprimarymechanismsofcrustformationinthepurplesoilwithlowclaycontent(103gkg~(-1)),cationexchangecapacity(CEC,228mmolkg~(-1)),ESP(0.60%),andSOM(17.2gkg~(-1)).MechanicalbreakdownandslakingwerethemostimportantintheloesssoilwithlowCEC(80.6mmolkg~(-1)),ESP(1.29%),SOM(9.82gkg~(-1)),andhighPAD(71.7%)andMWD(4.6mm).Simulatedresiduecoverreducedcrustformationinblackandloesssoils,butincreasedcrustformationinpurplesoil.

简介：Propertiesofrefractoriesaffecttheirperfor-manceanddeformationbehaviouraswellastheirultimatefailuremode,Thereforeinordrtoassessthecapabilitiesofmaterials,usedforrefractorylin-ings,inservicetheirpropertiesmustbeevaluated.Inthisworktheevaluationofsomephysicalpropertiesofcalcinedkaloin(Kibi,Ghana)aggregatere-fractorybodiesshowedanaverageporosityandspe-cificgravityof24%and2.78respectively,Anav-eragecoldcrushingstrengthof19.6MPawasalsoobtained.Thermalexpansionandbehaviourunderaconstanthotloadof196kPaalsoshowedgoodresis-tancetohightemperaturedeformation.

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简介：Besidesthebiologicalgrowthfactors,smallorganicmolecules,andchemicalions,physicalsignalsistheothercategoryofveryimportantfactorstotune/regulatethefateofstemcells.Recentyears,moreattentionhasbeenpaidonthedifferentiationofstemcellsonthephysicalsignal,including,electricormagneticfield,surfacetopologyofbiomaterials,photoirradiation,andevenpressureandstrainfromthematerials.With

简介：Deareditor,In2016,severallandmarkgovernmentinitiativeswerelaunchedinanefforttobuildamorehealthyChina.InMarch,theNationalPeople’sCongressofChinaadoptedthe13thFiveYearPlan,whichsetsoutnewobjectives,principles,andtargetsfor2016–2020,1includingactionplansforenhancingenvironmentalprotectionandgreengrowth,promotingindividualand

简介：Purpose:Toexaminetheassociationsamongpreschoolersfundamentalmotorskills,screen-time,physicalactivity(PA),andsedentarybehavior(SB).Methods:Childrenages3-4yearswereenrolledinaprospectiveobservationaltrialofPA.TrainedassessorsconductedtheTestofGrossMotorDevelopment-3rdedition(TGMD-3),andtheMovementAssessmentBatteryforChildren-2ndedition,andparent-reportedchildscreen-timeandsociodemographicinformation.Childrenworeanaccelerometerfor7daystoexamineSBandtotalPA(TPA).TPAwasfurthercharacterizedasmoderateto-vigorousPA(MVPA)orvigorousPA(VPA).Mixedlinearmodelswerecalculated,controllingforage(forTGMD-3),sex,householdincome,andaccelerometerweartime(foraccelerometrymodels),withchildcarecenterasarandomeffect.Theprimaryanalysisreportedonthecross-sectionalbaselinedataof126childrenwithcompletefundamentalmotorskillandscreen-timedata;asubanalysisincluded88childrenwithcompleteaccelerometrydata.Results:Childrenwere3.4±0.5yearsofage(54%girls;46%white,42%AfricanAmerican,12%other).Atotalof48%livedinhouseholdsatorbelowthefederalpovertylevel.Childrenengagedin5.1±3.6h/dayofscreen-time.Children’sscreen-timewasinverselyrelatedtotheMovementAssessmentBatteryforChildren-2ndedition,manualdexterityskillspercentile(β(SE)=-1.7(0.8),p=0.049).Intheaccelerometrysubsample,childrenengagedin5.9±0.9h/dayofTPAofwhich1.7±0.6h/daywasMVPA.BoysengagedinmoreMVPAandVPAandlessSBcomparedwithgirls(allp<0.05).AhigherTGMD-3,totalscore(b(SE)=0.4(0.2),p=0.017)andlocomotorscore(β(SE)=0.7(0.3),p=0.018)wereassociatedwithmoreVPAbutnotwithTPAorMVPA.Screen-timeandtelevisioninthebedroomwerenotrelatedtoSB,TPA,MVPA,orVPA.Conclusion:Children’smotorskillswerepositivelyrelatedtoVPAbutinverselyrelatedtoscreen-time.Furtherinquiryintotheimplicationsofhighexposuretoscreen-timeinyoungchildr

简介：Objective:Toexaminefactorsoftheyouthphysicalactivitypromotion(YPAP)modelthatareassociatedwithChineseinternationalstudents'meetingPArecommendations(MPAR).Methods:Atotalof649(females=320,males=329)Chineseinternationalcollegestudentsparticipatedinthestudy.ThisstudywasconductedintheUnitedStates(US.)betweenJuneandAugustin2011.Participantscompletedanonlinesurveyregardingtheirdemographic,PA,predisposing,enabling,andreinforcingfactors.Results:Logisticnested-regressionanalysissuggestedthatbeingmale,havingahigherbodymassindex,perceivedcompetence,self-efficacy,attitude,andenjoymentallincreased(p<0.001)theparticipants'oddsofMPAR.Exceptlanguagebarriers,alloftheenablingandreinforcingfactorspredictedMPARindirectlythroughthepredisposingfactors(p<0.001).Conclusion:UnderstandingfactorsthatinfluencePAamongChineseinternationalstudentsisanimportantstepintheprocessofpromotingtheirlong-termhealthandwellbeing.Designingprogramthataddresstheidentifiedkeyfactorsmayhelpcollegesanduniversitiesachievethisgoal.

简介：Background:Lately,physicalactivity(PA)inyounggirlshasbeenfrequentlydiscussed,thuswewereinterestedtoexaminewhetheramentaltraininginterventioncanincreasethelevelofPAinyounggirls.Methods:Asampleof56girlsaged15.4±0.3years(mean±SD)wasassignedtoeithertheinterventionorcontrolgroup.Wethenconducteda6-weekmentalimagerytrainingprogramonyoungfemaleparticipants.PAwasevaluatedwithobjectiveaccelerometermonitors.Physicalself-conceptwasalsoassessedinallparticipants.Results:Youngfemales'PAincreasedafteracourseofmentaltrainingcomparedtofemaleparticipantsincontrolgroup.Furthermore,physicalself-conceptimprovedrelatedtomentaltrainingprogram.Conclusion:ExerciseimagerymaybeaneffectivemethodofPAincreasebesidespsychologicalenhancementinyounggirls.