简介：Safetyisveryimportanttoeveryone,especiallyteenagers.Asstudents,weshouldlearntokeepourselvessafeallthetime.Whatshouldwedo？Herearesomeadvices.First,weshouldkeepsafeathome.Ifwestayathomealone,weshouldn’topenthedoorforthestrangers,andwemustn’tplayfireathome,

简介：Asacontagiousbacterialinfectionthataffectstheconjunctivalcoveringoftheeye,thecorneaandtheeyelids,trachomaiscontrolledbyanendorsedintegratedstrategyconsistingofsurgeryfortrichiasis,antibiotictherapy,facialcleanlinessandenvironmentalimprovement,namely,theSAFEstrategydevelopedbyWorldHealthOrganization.Developedbasedonevidencefrompreviousfieldtrialsandconstantlymodifiedinpractice,SAFEstrategyhasgreatlyboostedtheprogressintrachomacontrol.Regardlessofthefactthattherearestillmanypendingquestions,nationalprogramcoordinatorsareconvincedthattrachomacontrolinitiativebasedonSAFEstrategywouldbeeffective.

简介：AsasignificantcomponentofChina’sefforttoresolveenergyproblems,nuclearpowerwillbekeptdevelopinginChina,andthesafetyofwhichcanbeensured.TheremarkscameatatimewhenuncertaintiesloomoverChina’snuclearfuture.Beijingsuspendedapprovalsfor

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简介：TheCprogramminglanguageisexpressiveandflexible,butnotsafe;asitsexpressivepowerandflexibilityareobtainedthroughunsafelanguagefeatures,andimproperuseofthesefeaturescanleadtoprogrambugswhosecausesarehardtoidentify.SinceCiswidelyused,anditisimpracticaltorewriteallexistingCprogramsinsafelanguages,sowaysmustbefoundtomakeCprogramssafe.ThispaperdealswiththeunsafefeaturesofCandpresentsasurveyonexistingsolutionstomakeCprogramssafe.Wehavestudiedbinary-levelinstrumentationtools,sourcecheckers,source-levelinstrumentationtoolsandsafedialectsofC,andpresentacomparisonofdifferentsolutions,summarizedthestrengthsandweaknessesofdifferentclassesofsolutions,andshowmeasuresthatcouldpossiblyimprovetheaccuracyoralleviatetheoverheadofexistingsolutions.

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简介：苏州科达科技股份有限公司全新推出了SAFE系列高清监控产品，涵盖高清NVR、高清网络摄像机、高清监控管理平台及相关辅助设备。其中，高清NVR凭借在管理中心发挥的关键作用而备受瞩目，加之通用行业与商业市场的高清系统更侧重于NVR＋网络摄像机这一高性价比组合方案，因此，在未来，高清越普及，NVR就越重要，并且两者会相互发生良性促进作用，推劝高清监控的进一步普及。

简介：SixteeninvertedsiphonsareinoperationattheBeijing-ShijiazhuangsectionintheMiddleRouteoftheSouth-to-NorthWaterDiversionProject.Theirsafeoperationiscloselyrelatedtothesafetyandthewaterdiversionefficiencyofthewholeprojectduringaniceperiod.Theiceaccumulationprocessattheinletoftheinvertedsiphonismodeledunderarealicecondition,andthenthehydraulicconditionsoftheicejampreventionareconfirmed.Accordingtotheexperimentalresultsandthedesignsizesoftheinvertedsiphons,thedetailedsafewaterdiversiondischargeandtheoperationalwaterlevelarestudied.Analysisresultsoftheseinvertedsiphonsprovidereferencesforthesafeoperationandthereasonableregulationsduringtheiceperiod.

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简介：TheformerNationalPopulationandFamilyPlanningCommissionimplementedtheUnitedNationsDevelopmentProgramme(UNDP)regionalproject'SafemobilityandHIVPreventioninnorthernChina'(theProject)in2005-2011.ThisarticlesummariestheachievementsoftheprojectandprovidesreferenceonHIVpreventioninterventiontargeting

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简介：Helicopterinspectionofultrahighvoltage(UHV)transmissionlineshasunmatchedadvantagescomparedtomanualworkduetotheinspectionangleandhigh-techequipmentonboard,especiallyindetailedinspectionsoftowerheadsanddefect-detectionsinvirtueofinfrared/ultraviolettechniques.Thispaperdealswithsomekeytechnicalproblemsintheinspectionsof1000kVUHVAClineswithahelicopter,suchasthesafedistanceoflive-lineworking,electromagneticfieldintensityandflightcontrol.Basedonthestudyresults,asetofUHVlineinspectionmethodswasworkedoutandappliedtotheinspectionofliveUHVlines.

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简介：AIM:ToevaluatetheimpactofadvancedageonoutcomeMETHODS:Twohundredsandelevenpatientsundergonehepatectomy,gastrectomyandpancreatoduodenectomyfromJanuary1998toSeptember2002wereanalyzedretrospectively.Clinicopathologicfeaturesandoperativeoutcomeof83patientsaged65yearsormorewerecomparedwiththatin128youngerpatientsagedlessthan65years.RESULTS:Thenutritionalstate,suchaspre-operationlevelofserumalbuminandhemoglobinintheolderpatientswaspoorerthanthatintheyoungerpatients.Theolderpatientshadhighercomorbiditiesthantheyoungerpatients(48.2%vs15.6%).Nosignificantdifferencewasobservedinpedoperativemortality,andcomplicationratebetweentheolderandyoungerpatients(2.4%vs1.6%and22.9%vs20.3%,respectively).Multivariateanalysisdemonstratedthatpancreatoduodenectomy,hepatectomywithresectionofmorethan2segmentsandcomorbiditieswereindependentpredictorsofpostoperativecomplication,whereasagewasnot(P=0.3172).CONCLUSION:Itissafeforpatientsaged65yearsormoretoundergohepatic,pancreaticandgastricresectionifgreatcareistakenduringperioperativeperiod.

简介：OnMay1st,ChinaNationalNuclearCorporation(CNNC)announcedinBeijingthatunit1andunit2ofTianwanNuclearPowerPlantcooperativelyconstructedbyChinaandRussiahavecompletedinsuccessionthefirstfuelcycleoperationcontinuouslyandsafely.Itisthe

简介：InordertosolveabottleneckprobleminpowernetworksafetyoperationtheElectrotechnicalResearchInstituteundertheChineseAcademyofSciencehasfinishedadevelopmentworkofprototypehigh-temperaturesuperconductingcurrentlimiterwithindependentintellectualpropertyrightsonthebasisofatheoryadvancedonitsown.Suchalimiterhasovercomedisadvantagesinexistingonesworldwide.

简介：摘要随着公司海外项目的进一步拓展，所承接的海外项目越来越多，结构设计人员对有限元软件的使用越来越多，并已基本熟练掌握，然而，相当一部分结构设计人员对于利用有限元软件进行结构基础的设计掌握的不是很彻底，因此，本文将结合土耳其卡赞天然碱项目，详细介绍利用SAFE有限元软件接力SAP2000进行基础设计的方法，并针对实际过程中遇到的一些问题，提出利用SAFE的“.f2k”文件更新上部结构荷载的快捷方法，提出了利用SAFE的“.f2k”文件快速建模的新思路。最后，针对国内计算软件基础计算模块功能较为弱的问题，提出了利用SAFE的“.xls”文件接力YJK计算基础的便捷方法。

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简介：Inthecontemporarylargetokamak,thedisruptiveterminationofadischargewillreducethelifetimeofthefirstwallmaterialswiththeintenseheatfluxattheenergyquenchandtheintenserunawayelectronsduringthecurrentquench,andgeneratehighelectronmagneticforcesonvacuumvesselcomponentswithintenseeddycurrentatthecurrentquench.Thus,avoidanceandsofteningoftheenergyquenchandthecurrentquenchandcontrollinganexpecteddisruptionoremergencyshutdownmustbeestablishedinthepresenttokamakmachines.