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简介：Hamstringmusclestraininjuryisthemostcommonandprevalentinjuryinsportsinvolvinghigh-speedrunning,suchasAmericanfootball,Australianfootball,Englishrugby,soccer,trackandfield,andcricket.1Hamstringmusclestraininjuryalsohasahighrecurrencerateofupto48%.2Theaveragepracticeandgametimelossduetohamstringinjuryisbetween17and60days,contingentonthegradeofinjury.2Severehamstringmusclestraininjuries,andassociatedrecurrentinju-

简介：金属橡胶材料的健全吸收表演理论上并且试验性地被学习。声学的阻抗率和健全吸收系数基于金属橡胶材料的声学的参数被导出。结构常数，压缩的可能性模量和结构的参数的关系试验性地被调查。结果证明有一样的吝啬的孔直径的金属橡胶的标本有一样的结构常数。为一样的结构的参数，金属橡胶材料的压缩的可能性模量在某些频率范围是近似不变的。计算声学的参数在对试验性的结果的好同意，表明理论模型的有效性。

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简介：Howtousetheoventobakedeliciousfoodisthemostconcernedproblemofthedesignersandusersoftheoven.Forthisintent,thispaperanalyzedtheheatdistributionintheovenbasedonthebasicoperationprinciplesandproceededthedatasimulationofthetemperaturedistributionontheracksection.Constructingthedifferentialequationmodelofthetemperaturedistributionchangesinthepanwhentheovenworksbasedontheheatradiationandheattransmission,basedontheideaofutilizingcellularautomationtosimulateheattransferprocess,usedANSYSsoftwaretoproceedthenumericalsimulationanalysistotherectangular,round-corneredrectangular,ellipticalandcircularpansandgivingouttheinstantaneoustemperaturedistributionofthecorrespondingshapesofthepans.Thetemperaturedistributionoftherectangularandcircularpansprovesthattheproductgetsovercookedeasilyatthecornersandedgesofrectangularpansbutnotofaroundpan.

简介：Thetextpresentedispartofthestudy“Evaluationofpostgraduate(PG)educationinBrazil,Portugal,andSpain”andanalyzesthefiveBrazilianNationalPlansofPosgraduateStudies(inportuguese:PlanoNacionaldePós-Graduacao—PNPG),specificallyevaluatingtherelationshipamonginternationalization,integration,anddevelopmentregionalrelations,inBrazil’srelationswithitsneighborsinLatinAmericaandtheCaribbean.Usingresearchmethodologyfromthefieldofknowledgeofcomparativeeducation,itseekstoconstructthreeresearchaxesinordertoproposeananalyticalcategorizationonthefollowingepistemologicalactions:torelatethehistoricalcontextofeachBrazilianPNPGtotheconceptsofregionaldevelopmentandintegration,especiallywithrespecttonationalneedsfortheexpansionandrenewalofscienceandtechnology;tryingtoshowtheevolutionofPGcoursesandprograms(specificallymaster’sanddoctoralcourses);andalsoinIVandVPNPG,toanalyzethedirectionthattheinternationalizationobjectivehastakenandwhichregionalintegrationproposalsarepresentintheplanningdocuments.Preliminarily,wecanaffirmthat,althoughBrazilincorporatedthediscourseofregionalintegrationinitsnationalplans,especiallyintheso-called“national-developmentalist”decades,onlyfromtheendofthe20thcenturydidthethemeappearmoreobjectivelyandfocusedonrealactionsregardingevolutionofpost-graduation.

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简介：Inthispaper,thecharacteristicsofdensitycurrentundertheactionofwavesaredescribedwiththehelpofflumeexperimentandtheoreticalanalysis.Thestudyshowsthatturbidwaterundertheac-tionofthewavescanpresentthreetypesofmotion,i.e.significantstratification,fragilestratificationandstrongmixing.Themotionofturbidwaterpresentssignificantstratificationwhen（H/D）/△ρ/ρ1/2≤4.5,generallythisstateisknownasdensitycurrent.Theformulasofmotionvelocity,thickness,anddischargeofdensitycurrentmovingonhorizontalbottomarederivedbyuseofba-sicequationssuchasmomemtumequation,equationofenergyconservationandcontinuityequationoffluid.Thetime-averagevelocityandthethicknessofdensitycurrentundertheactionofwaveshavearela-tionshipwithsuchparametersasrelativedensity（△ρ/ρ）,waveheight（H）,andwaterdepth（D）.Whentheseparametersaredetermined,thetime-averagethicknessandmotionvelocityofdensitycurrentareal-sodetermined.Therelat

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简介：Researchontheseismicvulnerabilityofbuildingstructuresisveryimportantfortheworkofearthquakedisasterpreparednessandmitigation.Onthebasisoftherelatedstudiesoveralongtime,thispaperprovidesseveralseismicvulnerabilitymatricesofbuildingstructureindifferentregionsofSichuanProvince,Pooranti-seismiccapabilityisoneofthefactorsresultingintheearthquakedisastersinthepast.Wecanreduceeconomiclossescausedbyearthquakethroughimprovingtheanti-seismicandpreventionlevelofbuildingstructuresinSichuanProvince.

简介：Elevatedheartrateisamajorriskfactorforcardiovasculardiseases.Theinhibitoroffunnycurrent(I(f)),ahyperpolarization-activatedcyclicnucleotide-gatedchannelcurrent,ivabradineisanewagentselectivelyreducingheartratedevoidofothercardiovasculareffects,whichhascomeintothemarketinEuropeformorethan3years.Ithasbeenapprovedthatpureheartratereductionbyivabradinecanimprovemyocardialischemia,endothelialfunctionandmyocardialcontractilefunction.Long-termadministrationwillnotincreaseall-causemortality.Itstherapeuticvalueinstablecoronaryarterydiseasehasbeenverifiedinclinicalpractice,whileinotherfieldsofcardiovasculardiseasesstillneedsmoreevidence-basedmedicalresearch.Thisarticleisareviewaboutitsrecentresearchadvancesinexperimentalandclinicalstudies.

简介：Theresearchdevelopmentonnewdryvibratingre-fractories,magnesiabasedslagdamandbubblecurtainbarricadeforcontinuouscastingtundishwasintroduced.

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简介：Ifyouwish......tobeinformedabouttheoreticalandappliedresearchonacupunctureinChina,......toreadthelatestimportantarticleswrittenbyChineseacupuncturespecialists,......tolearnrecentadvancesinelinicalapplicationofacupunctureinmedicalinstitutesthroughoutChina,

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简介：ChineseForestEcosystemResearchNetwork,estabfishedinlate1950'sanddirectlyconstructedandadministeredbytheScienceandTechnologyDepartmentofStateForestryAdministrationofChina,isalargeecologyresearchnetworkfocusesonlong-termecosystemfixed-observation.Itembodies15sitesthatrepresentdiverseecosystemsandresearchpriorities,including6state-levelsites.CFERNOfficecoordinatescommunications,networkpublications,andresearch-planningactivities.CFERNusestheadvancedgroundandspatialobservationtechnologiessuchasRS,GPS,GIStostudythestructure,functionallawsandfeedbackmechanismofChineseforestecosystem,aswellasitseffectsonChina'ssocialandeconomicdevelopment.ThemaintaskscarriedoutbyCFERNare:(1)constructionofthedatabaseonthestructureandfunctionsofChineseforestecosystemanditsecologicalenvironmentalfactors;(2)thedatabaseconstructionofforestresources,ecologicalenvironment,waterresourcesandrelatedsocialeconomyinbothregionalandnationalscales;(3)theestablishmentofanevaluationsystemofforestecologicaleffectsinChina'smaindrainageareas;(4)theestabfishmentofaforestenvironmentmonitoringnetworkandadynamicpredictionandalarmsystem.

简介：OnthebasisofPlanckquantumhypothesisandEinsteinphotonquantumhypothesis,Zhongjizi(anewelementaryparticle)hypothesiswasproposedtorevealtheessenceofphoton,theoriginofmass,thequantumpropertyofgravitation,andthenatureofdarkmatter.TheresultsshowthatphotonisessentiallyasetofZhongjizi,lightiscomposedupofZhongjizi,thenatureoflightisparticleproperty,thepropertyoflightisdeterminedbythepropertyofZhongjizi,andthequantumpropertyoflightisessentiallyZhongjizipropertyoflight.Zhongjiziisthemostbasicparticleintheuniverseandtheoriginofmass,whichgivesmasstootherparticles.Zhongjiziisparticletransmittingthegravitation;gravitationtransmissionspeedisequaltothespeedoflight.ThequantumpropertyofgravitationisthepropertythatgravitationistransmittedbyZhongjizi.Theso-calleddarkmatterisessentiallyZhongjizifulloftheuniverseandtransmittinggravitation,soZhongjiziistheso-calleddarkmatterparticle.