简介:BackgroundNoncompactionofventricularmyocardium(NVM)isararetypeofprimarycardiomyopathy.Thediseaseiscausedbythedisorderinthedensificationofthemyocardiumintheearlystageoftheembryoprocess.Themorphologicalcharacteristicsareprojectingtrabeculationintheventricleandthedeeptrabecularspaceinterlinkedwithventricularchamber.Inrecentyears,manystudieshavefoundthattheleftventriculargrowthassociatedgeneticmutationiscloselyrelatedtotheoccurrenceofNVM.Themostclinicalmanifestationssuchasheartfailure,thromboembolismandarrhythmiaarespecific.EchocardiographyisthemostcommonlyusedtechniqueforthediagnosisofNVM.Cardiaccomputedtomography(CT)scan,cardiacmagneticresonanceimagingandleftventricularangiographyareotherimportanttechniquesforitsdiagnosis.TheNVMpatientshavealongcourseofdisease,poorprognosisandahighrateofmisdiagnosis.Thisarticlereviewstheresearchprogressintheaspectsofepidemiologicalcharacteristics,geneticcharacteristics,clinicalmanifestations,pathophysiology,diagnosis,treatmentandsoon,inordertoprovidethebasisforthediagnosisandtreatmentofNVM.
简介:ECOLOGYTheoriesandStrategiesofDegradedWetlandEcosystemRestorationCuiLijuan,ZhaoXinsheng,ZhangYan,ZhangManyin,LiWeiWangYifei,LiShengnan(ResearchInstituteofWetland,ChineseAcademyofForestry,Beijing100091,P.R.China).WorldForestryResearch,2011,24(2):1-4.
简介:Split-phase current differential protection has excellent capability of fault phase selection no matter whether the fault occurs on the same line or cross over lines.,under-reaching distance protection will not overreach when fault occurs at the end of line or the beginning of the next line after series capacitor.,The whole protection scheme for double-circuit lines on the same tower consists of split-phase current differential protection or split-phase composite distance carrier protection and zero-sequence directional comparison protection as main protection
简介:TheWorldAssociationofSedimentationandErosionResearch(WASER)establishedtheAwardfordistinguishedcontributionstosedimentresearchin2004.ThisawardistoprovideinternationalrecognitionfordistinguishedcontributionstothesedimentstudiesthroughoriginalandilluminatingresearchpaperspublishedintheInternationalJournalofSedimentResearch.Sevenpaperspublishedin2004-2009havebeenawardedthedistinguishedcontributionsawardin2007and2010.Aselectioncommittee,consistsof7scientistsfrom6counties,wasestablishin2012,whichscreened125paperpublishedinInternationalJournalofSedimentResearchduring2010-2012.Copiesof15papersintheshortlistweresenttomembersofthecommitteeandeachmemberwasrequestedtorecommend3papersfortheaward.ThevotingforthedistinguishedcontributionsawardstartedfromNovember1,2012viaemail.Allmembersoftheselectioncommitteehavereadthepapersandvotedfortheawardbasedonscientificmeritsofthesepapers.UptoJanuary10,2013,allthesevenmembershavesentbacktheirvotes,andtheresultsarethereforevalid.Thefollowing
简介:ThewetlandtourisminChinahasbeenoneofthemostpopulartourismsasitsfastgrowthinChinainrecentyears.Thesignificanceofthewetlandtourismresearchforthelocalsustainabledevelopmentwasnoticedandhavesummarizedthisreviewin3aspects:resources,includingassessment,resourcesandproductsdevelopment;planning,includingtheorientationofwetlandtourism,thelandscapeplanningandapplicationofscienceandtechnology;andmanagement,includingtourismcapacity,environmentalevaluation,theecologicalcompensationandthepublicparticipation.ThewetlandtourismresearchinChinaisinsufficientinthefollowingfields:thedepthofextensivestudies,theapplicationofmathematics,theobjectiveplanningandtheevaluationofecologicalinfluence.Whatshouldbemorenoticedinthefutureresearchisthatitisconsideredaslandscapeecology,landscapeplanningandtherelevantwetland-structurecontrolling,theenvironmentandlandscapepatternchangecausedbytourism,tourismriskevaluation,theeconomicsandsociologyresearchinwetlandtourism.
简介:BaosteelTechnicalResearch,aquarterlyjournal,whichisissueddomesticallyandabroad,isrunandsponsoredbyBaosteelGroupCorporation.BaosteelTechnicalResearchmainlyreportstheachievementsintechnologicalinnovation,academicresearch,newproductdevelopmentandindustrialequipmentimprovementbyBaosteel.Itwillcontinuetofollowuponhottopicsandservethecompany'stechnologicaldevelopmentandprogress.Itsreadersincludeexpertsinsteelmetallurgyandrelatedfields,technicians,managementstaff,professorsandstudentsinuniversitiesandcolleges.It
简介:Theinfluenceofdiffuserparameters,includingtheriserspacing,portnumberinariser,injectionangle,portarrangement,etc.,onthesurfaceinitialdilutionisexperimentallyinvestigated.Therelativedensitydifferencebetweentheeffluentandtheseawaterinthemodelisthesameasthatintheprototype,andtheeffectofthecrosscurrentissimulatedbyaninversemodeltechnique.Basedontheresultanalysis,thearrangementwithmoreportsinariserandlargerriserspacingissuggestedtosaveconstructioncost.TherelationshipbetweentheReynoldsnumberbasedontheportdiameterandvelocity,andthesurfaceinitialdilutionisalsoexplored,andthecriticalReynoldsnumberisproposed.
简介:Byanalyzingthethreshold-jumpingofSchmittcircuits,thispaperindicatesthatthecoreelementrealizingthisfunctioninbinaryTTLSchmittcircuitsisthedifferentialcurrentswitchwithcontrollablethreshold.Basedonthecharacteristichavingtwokindsofsignal-detectionthresholdinternaryTTLcircuits,aternaryTTLSchmittcircuithavingtwicereactionsofthreshold-jumpingisdesigned.ThesimulationwithPSPICEprovesthatthedesignedcircuithasidealfunctionofSchmittcircuits.
简介:伍德composites能通常在三部分被分类:把压成薄片的composites,混合composites和渗透的composites。每部分有它的自己的特征和罐头进一步被划分。这篇论文在中国介绍历史和木头composites的开发的国家。关于把胶水压成薄片的木材的研究是稀罕的,工业几乎不来到是。成就的一个伟人在混合composites被获得了,它是很好工业化的。scrimber上的许多研究被做了,中国研究人员正在寻找在中国开发scrimber工业的一个可行方法。中国研究人员也在学习木头塑料composites(世界和平理事会)花了那么多精力,但是它一直不由于高费用是工业化的。
简介:BaosteelTechnicalResearch,aquarterlyjournal,whichisissueddomesticallyandabroad,isrunandsponsoredbyBaosteelGroupCorporation.BaosteelTechnicalResearchmainlyreportstheachievementsintechnologicalinnovation,academicresearch,newproductdevelopmentandindustrialequipmentimprovementbyBaosteel.
简介:Yttriastabilizedzirconia(YSZ)haswidelybeenusedaselectrolyteinsolidoxidefuelcell(SOFC).ThemicrostructureofYSZrelatedtothefabricationprocesswasdiscussedinthepaper.WithYSZnano-powdersabout40-100nmasrawmaterial,theYSZadobewasmanufacturedbytapecalenderingprocess.Thenamedthree-stepsinteringprocesswasperformedat1000℃for2h,thenraisedthetemperaturewithnormalrateandassoonasupto1400℃,thefurnacewascontrolledat1250-1300℃for10-20h.ThehighdenseYSZswiththerelativedensityof96%-99%wereobtained;thegrainsizeofYSZcouldbereducedto0.5-3μm.Theaboveresultisbenefitedtoco-firedintheelectrode-supportedSOFCs.
简介:Shen Guorong. RESEARCH ON PRINCIPLE OF DPFC DIRECTIONAL RELAY. AUTOMATION OF ELECTRIC POWER SYSTEMS.1983,Shen Guorong. RCS-978 DIGITAL TRANSFORMER PROTECTION SET. AUTOMATION OF ELECTRIC POWER SYSTEMS.2000,Zheng Yuping. LFP-915 DIGITAL BUSBAR PROTECTION SET. AUTOMATION OF ELECTRIC POWER SYSTEMS.2000
简介:Withtheincreasingimportanceofoceanexploitation,providinganti-rollingstabilityforshipsatanchorhasbecomemoreandmoreimportant.Thelift-generationtheoryoftraditionalfinstabilizersisbasedonincomingflowvelocity,whichisnotsuitableforexplainingliftgeneratedatanchor.Weanalyzednon-steadyflows,withforcesonfinstabilizersgeneratedbynon-incomingflowvelocityconditions,andgaveanewlift-generationmodel.Thecorrectnessofthemodelwasprovenbycomparingexperimentalresultsoffinstabilizermotionundernon-incomingvelocityconditionsfromthefluidcomputationsoftwarewiththatfromtheemulatorofthelift-generationmodel.Finally,themodelwasusedinananti-rollingsystemonashipandthereductionofrollwasmuchbetterthanwhatcouldbeachievedbypassiveanti-rollingtanks.
简介:Inthispaperthreemethods(diluteacidpretreatment,aqueousammonia/diluteacidpretreatmentandalkalinepretreatment)wereusedtostudythehydrolysisofcornstoverandcharacteristicsofeachmethodwerecompared.Theresultsshowedthattheligninremovalratewas71.8%whenthecornstoverwastreatedwithacausticsodasolutioncontaining1.5%ofNaOH,atatemperatureof75℃for90minwithaninitialsolid-liquidratioof1:8(w/v).HydrolysisyieldoftheNaOHpretreatedsamplereached78.5%,whichwasmuchhigherthanothercontrolgroups.Theseresultsareusefulforevaluationofpretreatmenttechnologies,andidentificationofkeyfactorsthatlimitcellulosehydrolysis,andcanalsoserveasabasisfordesigningandscreeningappropriatepretreatmenttechnologies.
简介:FORESTCERTIFICATIONHighConservationValueForestsTheory,PracticeandFutureTendencyDongKe,DengHuafeng(ForestryCollegeofBeijingForestryUniversity,Beijing100083,China),WorldForestryResearch,(2007)20(5):7-11.
简介:HitachiInformationSystemsstarteduptheRFIDbusinessfrom2002andprovidesvarietiessolutions,especiallydevotedtheenergiesontheresearchofmetallictagandthedevelopmentofitsappliedarea.Themetallictagwasdevelopedtowithstandtheharshenvironmentlikevibration,shock,high-pressurewaterinjection,highvoltage,andultravioletirradiation.Becausethemetallictagthatdifferentwiththemetaltagcreatedbefore,isprotectedbythemetallicmaterialthatmadeitverystrongtobeusedintheenvironmentlistedabove.June,2006,ourcompanysuccessfullydevelopedthemetallictagwitharmor-cladstainlesssteel.Therefore,comparingwiththeresintag,themetallictagwithremarkablemechanicalstrengthwassufficientattentiontowithstandtheoutdooruse,eventoresistUV.Bythemethodofscrewfixing,rivettightening,solderingornailstriking,theinstallationprocedurecanbecompleted.Becausethevariousinstallationmethodsweresupported,themetallictagcanbeappliedtomanyindustryareas.Themanagementmarketslikeconstructionmachinery,substationequipment,molds,tools,andmetalliccontainerthatneedtheverystrongtagcanbedeveloped,becauseofthemetallictag.Inthisthesis,itwillbedescribedabouttheresearchbackgroundandtheresearchresultsofmetallictag,thecommercializedmetallictag’sfeaturesandapplicationfields,aswellastheresearchsubjectsinthefutureandrecentdevelopmentsituation.