简介：BackgroundThevideo-assistedthoracoscopicsurgicaltechniquesarewidelyusedinthetreatmentofpatientswithcongenitalheartdiseaseswithgoodoutcomes.However,thefeasibilityandsignificanceofnursebasedearlycardiacrehabilitationincardiacintensivecareunit(ICU)forpatientswithtotallythoracoscopiccardiacoperationhasbeenseldomstudied.MethodsThirty-sixpatientswithtotallythoracoscopiccardiacoperationundertheconditionofthecardiacICUinGuangdongGeneralHospitalwererandomallocatedtotheinterventiongroupandthecontrolgroupbetweenJanuary2012toDecember2014.Thecontrolgroupreceivedstandardnursingcare,andtheinterventiongroupreceivedearlycardiacrehabilitationnursingcareinadditiontostandardcare.Theoutcomemeasuresincludedtheoxygensaturation(SpO2%),vitalcapacity,forcedexpiratoryvolumein1second(FEV1),andpaininthethoracicwound(visualanaloguescale,VAS),whichweremeasuredatthebaselineandwithin2-dayafter4-weeknursingcare.Forsafetyreason,wealsomonitoredtherateofperceivedexertion(RPE),heartrate,systemicbloodpressure.ResultsTherewerenon-significantdifferencesbetweenthegroupsinage,sex,totalnumberofcomorbidconditions,totalnumberofmedications,surgicaltime,andanesthetictime(P>0.05).Following4weekstreatment,thecardiopulmonaryfunctionsandVASscorewereimproved(P<0.05)inallgroups.Inaddition,theimprovementsweremoreintheearlycardiacrehabilitationnursecaregroupthaninthecontrolgroup(P<0.05).ConclusionTheearlycardiacrehabilitationnursingcareincardiacICUissafe,feasibleandbeneficialforpatientswithtotallythoracoscopiccardiacoperation.

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简介：AninputcouplerfortheTE021circularelectricmodeinagyroklystronamplifierthroughusingTE811asatransitioncouplingmodeinacoaxialcavityhasbeenproposedandnumericallysimulatedinafrequencyrangeofKa-BandwithHFSScode.ThecouplingefficiencyoftheTE021modeandthesuppressionfortheTE811modeinthemaincylindricalcavityaredeliberatelyconsideredbyadjustingthepositionandsizeofcouplingholesaswellastheradiusofthedrifttubes.ThenumericalresultsshowthattheTE021modecansuccessfullybeexcited,andrationalcouplingefficiencyandhighmodepurityfortheTE021modeinthecylindricalcavitycanbereachedfortheengineeringapplicationofgyroklystronamplifierstudy.

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简介：Wereportanindex-coupleddistributedfeedbackquantumcascadelaserbyemployinganequivalentphaseshift(EPS)ofquarter-waveintegratedwithadistributedBraggreflector(DBR)atλ~5.03μm.TheEPSisfabricatedthroughextendingonesamplingperiodby50%inthecenterofasampledBragggrating.ThekeyEPSandDBRpatternarefabricatedbyconventionalholographicexposurecombinedwiththeopticalphotolithographytechnology,whichleadstoimprovedflexibility,repeatability,andcost-effectiveness.Stablesingle-modeemissioncanbeobtainedbychangingtheinjectioncurrentorheatsinktemperatureevenundertheconditionoflargedrivingpulsewidth.

简介：Todemonstratetheviabilityofsteady-statetokamakoperationinahighperformanceregime,whichisoneofthekeyphysicsissuesforaviableeconomicfusionreactor,thequasi-stationaryreversedshear(RS)modeofoperationintheHL-2AtokamakhavebeenmodeledwiththeTRANSPcode.InordertosustaintheRSoperationtowardssteady-state,off-axiscurrentdrivewithlowerhybrid(LH)waveat2.45GHzisusedtocontrolthecurrentprofile.

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简介：ThefirstinChinacommercialtestunitformanufactureofsyntheticnaturalgas(SNG)throughlow-temperaturemethanationofcokeovengasratedat5000m3/dhascompletedits1000-hourcontinuoustestsattheTongshidaCokeryinShanxiprovince.Itislearnedthatthewholeprocesstechnologyisthefirstinnovativeprojectrealized

简介：摘要：近年来，互联网、大数据、云计算、人工智能、区块链等技术加速创新，越来越融入经济社会发展各个领域的全过程，数字经济发展速度快、辐射区域广、影响度深发挥海量数据分析能力和丰富多样的使用场景资源优势，积极推进数字技术与实体经济深度融合，助力传统工业企业转型升级，培育新兴产业新业态新模式，不断强化构建优秀数字经济。

简介：Objective:Laryngealreconstructionisneededtopreservelaryngealfunctioninpatientswhohaveundergoneextensiveverticalorfrontalpartiallaryngectomy.However,theprocedureremainsadifficultchallenge.Severalreconstructiontechniqueshavebeendescribed,butthesetechniquesposerisksofcomplicationssuchaslaryngealstenosis.Thisstudyaimedtoevaluatethepostoperativecourseandfunctionaloutcomesofanewtechniquethatcombinedamuscle-pediclehyoidboneandathyrohyoidflapduringlaryngealreconstructionaftertumorresection.Methods:Fourpatientsunderwentextensiveverticalpartialorfrontalpartiallaryngectomyforcancer.Aftertumorresection,laryngealreconstructionwasperformedusingtheproposedtechnique.Postoperativerecoverytime,complications,andoncologicresultswereevaluated.Results:Thefourpatientsweresuccessfullytreatedwiththeproposedtechnique.Nodyspnea,dysphagia,ordeathoccurredduringthepostoperativecourse.Decannulationwasperformedafteramedianof3days.Theaveragepostoperativehospitalstaywas7days.Short-termpostoperativefunctionalrecoverywasnormal.Nolaryngealstenosisortumorrecurrencewasobservedinanyofthefourpatientsafterafollow-upperiodofmorethan24months.Conclusion:Thecombinationofthemuscle-pediclehyoidboneandthethyrohyoidflapisareliableprocedureforlaryngealreconstructionafterextensiveverticalpartialorfrontalpartiallaryngectomy.

简介：【摘要】： 按我国电力行业标准， 300MW 及以上机组的火电厂运行人员必须经过仿真机培训。可见，仿真机培训在火电机组安全稳定运行的重要性。如何提高仿真机的培训效果， 本文笔者 历经多次教学和大赛集训教练工作 , 总结出一些实际经验 。

简介：ImprovingtherurallivingenvironmentinruralChinaisoneofthekeytasksforthecountrytoaccomplishitsgoalofbuildingamoderatelyprosperoussocietyby2020.Yunnanhashighlyfocusedonthetaskofthetreatmentofresidentialdomesticsewageandhouseholdgarbageinruralarea.ManyeffortsandresourceshavebeenputintothisfieldinYunnansince2016.Progresshasbeenmadetoincreasethecoveragerateofthesewageandhouseholdgarbagetreatmentfacilities.Seventy-fivepercentoftotaladministrativevillageshavebuiltupgarbagetransportationsystemandtreatmentfacilities.Sixty-threepercentoftownshavecollectedandtreatedtheresidentialdomesticsewagebyconstructingvariousscalesewagetreatmentstations.However,thelackofthelong-actingoperationmechanismandtheimperfectionofthechargerulesforthesewageandgarbagetreatmentfacilitieshavebecomeproblemsthatwouldhindertheachievingoftheenvironmentalgoalsinYunnan.Thereasonswereelaboratedonthebasisofthelocalactualsituations.Therefore,itissignificanttoimprovethechargerulesandframethelong-actingoperationmechanismbystrengtheningthegovernancecapacity,frameanoverallmechanismandencouragethemasstobeinvolvedintheimprovementsofthelivingenvironmentinruralYunnan.

简介：FERMI,theseededfreeelectronlaser(FEL)inoperationinItaly,isprovidingtheUserCommunitywithuniquefullycoherentradiation,inthewavelengthrange100–4nm.FERMIisthefirstFELfullysynchronizedbymeansofopticalfibers.Theopticaltimingsystemensuresanultra-stablephasereferencetoitsdistributedclients.Severalfemtosecondlongitudinaldiagnosticsverifytheachievedperformance;thebunchlengthmonitor(BLM)andthebuncharrivalmonitor(BAM)willbepresentedinthispaper.Feedbacksystemsplayacrucialroletoguaranteetheneededlongtermelectronbeamstability.Areal-timeinfrastructureallowsshot-to-shotcommunicationbetweenfront-endcomputersandtheservers.Orbitfeedbacksareusefulinmachinetuning,whereaslongitudinalfeedbackscontrolelectronenergy,compressionandarrivaltime.Aflexiblesoftwareframeworkallowsarapidimplementationofheterogeneousmultiinput–multi-output(MIMO)longitudinalloopssimplybyselectingtheappropriatesensorsandactuators.

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简介：Attheendoflastyear,theeditorsfromPowerandElectricalEngineersinterviewedZhouXiaoxinon"FundamentalResearchonEnhancingOperationReliabilityforLarge-ScaleInterconnectedPowerGrids",aprojectof"973Program".Mr.Zhou,thechiefengineerofChinaElectricPowerResearchInstitute(CEPRI)andanacademicianofChineseAcademyofSciences,isthechiefscientistinchargeofthisresearchproject.

简介：ObservationoftheoperationoftheSanmenxiaReservoirontheYellowRiverhasledtotheconclusionthattopreserveacertaineffectivestoragevolumeforreservoirsbuiltonheavilysilt-ladenriversisfeasibleifthereservoirisoperatedaccordingtotheprincipleknownas"storingtheclearwateranddischargingthemuddyflow".Therelativestabilityofthebedelevationattheendofthebackwaterandthereservoir'serosionanddepositionequilibriumdependonthecompatibilityofthepoollevelmaintainedinnon-floodseasonswiththeconditionsofflowandsedimentloadduringfloodseasons.OperatingthereservoirtoregulatethefloodandsedimentloadduringfloodseasonscanreducetherateofaggradationintheLowerYellowRiver.Thebasicconditionforapplyingtheoperationmodeof"storingtheclearwateranddischargingthemuddyflow"isthatasufficientamountofwatershouldbeusedfordischargingsedimentduringfloodseasons.Undertheconditionofextremelylowflowyears,reservoirsedimentationcannotbeavoidedevenifthisoperationmodeisadopted.

简介：Auniformtransienttemperaturefieldmodelofelectricalcontactsoperationwasfoundbyanalyzingtheprocessofclosingarc→constrictionresistanceJouleheat→breakingarc.EssentialparametersofAg/La2NiO4electricalcontactmaterialfortransienttemperaturefieldcalculationwereobtainedthroughtestsofelectricalcontactexperimentalinstrumentunder18VDCindifferentcurrents,othercorrelationexperiments,andcalculationanalysis.Thefiniteelementmethodwasappliedtosolvethetransienttemperaturefield,andthefeaturesanddistributionofthetransienttemperaturefieldwereobtained.Theconditionofmaterialerosionandmasstransfercanbeforecastedbythosecalculationresults.ItisbeneficialtoresearchaboutthelifetimeofAg/La2NiO4electricalmaterial.

简介：摘要：本文介绍了PY-144盘式加压过滤机的技术参数、结构，以及在用户现场运行过程中的维护保养经验。

简介：Forafullychaotictwo-dimensional(2D)microcavitylaser,wepresentatheorythatguaranteesboththeexistenceofastablesingle-modelasingstateandthenonexistenceofastablemultimodelasingstate,undertheassumptionsthatthecavitysizeismuchlargerthanthewavelengthandtheexternalpumpingpowerissufficientlylarge.Itistheoreticallyshownthattheseuniversalspectralcharacteristicsarisefromthesynergisticeffectoftwodifferentkindsofnonlinearities:deformationofthecavityshapeandmodeinteractionduetoalasingmedium.OurtheoryisbasedonthelinearstabilityanalysisofstationarystatesfortheMaxwell–Blochequationsandaccountsforsingle-modelasingphenomenaobservedinrealandnumericalexperimentsoffullychaotic2Dmicrocavitylasers.

简介：摘要：目的 对某地区药店质量管理经营现状进行研究，优化药品监管模式。方法 结合药店质量管理经营实际状况,在对药店许可验收和日常检查监管环节存在的问题进行分析基础上,提出药品监管模式优化策略。结论 从引入新型监管模式、加强法律法规及日常质量管理培训和提高企业人员积极性以及效率有效性等方面对做好药店质量管理提出对策建议。