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412 个结果
  • 简介:AsPresidentoftheInternationalSocietyofAndrology,itgivesmegreatpleasuretocongratulatetheAsianSocietyofAndrolobryforitsinitiativeinfoundingtheAsianJournalofAndrology.lndoingso,lalsosendmybestwishe.forthesuccessofthisimportantjournalinspreadingtheknowledgeofandrologythroughoutthehadstpopulouscontinentintheworld.Thisnewjournalappearsataverytimelymoment,attheturnofthemillenniumandatatimewhenandrologyisreceivingtherecogntitionamongstmedicalspecialitiesthatitdeserves.Inconclusion,1wouldliketocallonallAsianandrologiststosupporttheirjournalandtoworktoimprovethereproductivehealthofmen.(AsianJAndrol1999Jun;1:3-5)

  • 标签: 亚洲 男科学 生殖健康 体质
  • 简介:Strugglingagainsteconomicandsecuritywoes,FranceisexperiencingweaknessasitpreparesforelectionsinApril2017.AmidpublicanxietyanddespitemeasuresbytheSocialistgovernment,reformremainsdifficultandineffective.Arigidlaborforce,highsocialcostsproppedupbyhightaxes,andotherstructuralshackleshavepreventedHollandeandhispredecessorsinofficefrombalancingthegovernmentbudgetoverthelastdecade.

  • 标签: 法国 社会成本 安全问题 失业率 GDP 安全网
  • 简介:Inthispaper,akindofWeakCurrentTester(WeCT)isdescribed.Itisdesignedtotesttheweakcurrentwhichrangesfrom0.1nAto100μA.Themodulehasdividedthemeasurementrangeintosixsectionsincludingof1nA,10nA,100nA,1μA,10μAand100μA.Thetestercanreceivenotonlypositivepolaritycurrentbutalsonegativepolaritycurrent.Asfarastheprincipleisconcerned,wefirstlyconverttheweakcurrenttoasmall

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  • 简介:Naturalbeachestendtobeconcave-upratherthanplanarandarereasonabletobemodeledbyanequilibriumbeachprofile.Agoverningequationforlongshorecurrentonanequilibriumbeachisderivedanditsanalyticalsolutionisgiveninthispaper.Throughcomparisonsofthepresentsolutionandfielddataoflongshorecurrentforastep-typebeach,thepresentsolutionisfoundtohavefairlyagreeablepredictiontolongshorecurrentinsidethesurfzone.Theeffectsoftheshapeofaconcave-upbeachandturbulentmixingstressonlongshorecurrentinsidethesurfzonearediscussedinthepresentpaper.

  • 标签: longshore current EQUILIBRIUM BEACH profile SURF
  • 简介:AbstractCold-steel has served as the gold standard modality of phonosurgery for most of its history. Surgical laser technology has revolutionized this field with its wide use of applications. Additional modalities have also been introduced such as coagulative lasers, photodynamic therapy, and cryotherapy. This review will compare the surgical modalities of cold steel, surgical lasers, phototherapy and cryotherapy. The mechanism of action, tissue effects and typical uses will be addressed for each modality.

  • 标签: Phonosurgery Vocal fold Surgery LASER Cold steel Cryotherapy Photodynamic therapy CO2 laser Blue light laser Picosecond infrared laser KTP laser
  • 简介:Thereareseveraltechniquesforperformingcoronaryatheroscleroticplaquemodification,knownasatherectomy.Historically,clinicaltrialsshowmostlyequivalencebetweenvariouscoronaryatherectomytechniques,balloonangioplasty,andpercutaneouscoronarystenting.Inthelastseveralyearstheuseofagivenatherectomytechniquehasbeenmostlyasameansoffacilitatingstentdeliveryinvesselsthatareheavilycalcified.Noclinicaltrialshaveshownsuperiorityofanyatherectomymethodovermorestandardtechniquesofpercutaneouscoronaryintervention.Thisreviewbeginswithadiscussionofdirectionalatherectomy,whichisnolongeravailable.Therotationalatherectomytechniqueanditsclinicaltrialdataarepresented.Orbitalatherectomyisthendiscussedindetail,includingtherelevantclinicaltrials.Finally,laseratherectomytechniquesarereviewed,andthepertinenttrialdataarepresented.Lastly,futuredirectionsaredetailed.

  • 标签: CORONARY artery disease PERCUTANEOUS CORONARY INTERVENTION
  • 简介:AbstractA clinically reliable non-invasive test for endometriosis is expected to reduce the diagnostic delay. Although varieties of biomarkers have been investigated for decades, and cancer antigen-125, cancer antigen-199, interleukin-6, and urocortin were the most studied ones among hundreds of biomarkers, no clinically reliable biomarkers have been confirmed so far. Some emerging technologies including "omics" technologies, molecular imaging techniques, and microRNAs are promising in solving these challenges, but their utility to detect endometriosis has yet to be verified. New combinations of researched indicators or other non-invasive methods and further exploration of the emerging technologies may be new targets and future research hotspots for non-invasive diagnosis of endometriosis. In conclusion, researches of biomarkers for the detection of endometriosis are still ongoing and may benefit from novel molecular biology, bioinformatics methods and a combination of more diverse monitoring methods. Though it will be a daunting task, the identification of a specific set of diagnostic biomarkers will undoubtedly improve the status of endometriosis.

  • 标签: Biomarkers Endometriosis Non-invasive diagnosis
  • 简介:TensorProbabilityCurrentandContinuity¥WeiZhiyongandZhuYongtaiItisknownthatinquantummechanicswavefunctionscontainalltheinf...

  • 标签: PROBABILITY
  • 简介:Thediscreteiterativemapmodelofpeakcurrent-modecontrolledbuckconverterwithconstantcurrentload(CCL),containingtheoutputvoltagefeedbackandrampcompensation,isestablishedinthispaper.BasedonthismodelthecomplexdynamicsofthisconverterisinvestigatedbyanalyzingbifurcationdiagramsandtheLyapunovexponentspectrum.Theeffectsoframpcompensationandoutputvoltagefeedbackonthestabilityoftheconverterareinvestigated.Experimentalresultsverifythesimulationandtheoreticalanalysis.Thestabilityboundaryandchaosboundaryareobtainedunderthetheoreticalconditionsofperiod-doublingbifurcationandbordercollision.Itisfoundthattherearefouroperationregionsinthepeakcurrent-modecontrolledbuckconverterwithCCLduetoperiod-doublingbifurcationandborder-collisionbifurcation.Researchresultsindicatethatrampcompensationcanextendthestableoperationrangeandtransfertheoperatingmode,andoutputvoltagefeedbackcaneventuallyeliminatethecoexistingfast-slowscaleinstability.

  • 标签: 峰值电流控制模式 电流模式控制 降压转换器 复杂动力学 恒流负载 BUCK变换器
  • 简介:Fromaneconomicalpointofviewboththequalityoftheionexchangeresinsandthetechnologyusedinthefieldofindustrialwatertreatmentareimportantforasuccessfulperformance.Ingeneral,twodifferenttechnologieshavebeenestablishedonthemarket:ThemaindiffernecesbetweentheCO-andcountercurrenttechnologeswillbediscussedanddataconcerningtherequirementofchemicalsforregenerationandthequalityofthedeionizedwaterwillbeopposed.Inadditionseveraldifferentvarietiesofthemoderncountercurrenttechnologies,developedandpatentedbyBayerAG,willbedescribedandtheadvantages,dependingontheapplicationandthedemandonthequalityofthedeionizedwater,pointedout.Inviewofstrongerregulationsconcerningtheconsumptionofregenerationchemicals,andwastewater,andalsobecauseofthesuperiorqualityoftheproducedwater,themarketshareofcountercurrenttechnologieswillcontinuetoincreaseworld-wide.

  • 标签: 拜耳反向电流系统 离子交换理论 拜耳逆流系统 相互流系统 水处理
  • 简介:ThisreportgivesabriefintroductiontokeyThaiorganizations,includingresearchinstitutionsandacademicdepartments,activeinparticletechnology.ThisisfollowedbyadescriptionofthelatesttrendofpowdertechnologyandnanoparticletechnologyinThailand.

  • 标签: PARTICLE TECHNOLOGY NANOPARTICLES R&D Thailand
  • 简介:Thispaperintroducestheconfigurationandtheoperationprinciplesofahighpowerdirectcurrentcircuitbreaker(DCCB).Thecommutatingcurrentprincipleofthebreakerisde-scribedindetailswithitstheoryandsimulationanalysis.ThetestresultspresentedshowthattheDCCBmeetstherequirementsforquenchingprotection.ItwillbeusedasthemainbreakerforquenchprotectioninEAST.

  • 标签: 超导托卡马克装置 直流电路 断路器 绝缘体恢复时间 整流电流
  • 简介:AbstractPneumoconiosis refers to a spectrum of pulmonary diseases caused by inhalation of mineral dust, usually as the result of certain occupations. The main pathological features include chronic pulmonary inflammation and progressive pulmonary fibrosis, which can eventually lead to death caused by respiratory and/or heart failure. Pneumoconiosis is widespread globally, seriously threatening global public health. Its high incidence and mortality lie in improper occupational protection, and in the lack of early diagnostic methods and effective treatments. This article reviews the epidemiology, safeguard procedures, diagnosis, and treatment of pneumoconiosis, and summarizes recent research advances and future research prospects.

  • 标签: Pneumoconiosis Epidemiology Diagnosis Treatment Emerging technologies
  • 简介:Whatthecurrentworldismostconcernedaboutisthesituationofsecurity.Withoutsecurity,itisnottomentioneconomicconstruction,norpeacefuldevelopment,norpeoplelivingandworkinginpeaceandcontentment.Allcountriesintheworldarenoexceptioninthisregard.Thisarticlewilldealbrieflywiththequestionsofwhetherthecurrentworldissecure,wherethethreatstotheworldsecuritycomefromandhowthesethreatsarecopedwith.

  • 标签: 国际安全 和平 发展 恐怖组织 国际政治经济新秩序
  • 简介:1.ThePowerIndustryandCogenerationinChina1.1ThePowerIndustryinChinaThepowerindustryhasdevelopedrapidlyinChinainrecentdecades.In1994,totalelectricitygenerationwas927.8TWhandthetotalinstalledcapacitywas199.80GW.Itisbrokendownasfollows:hydropower49.0GW.24.5%;thermalpower148.73GW,74.4c/c:andnuclearpower2.1GW,0.7%.

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  • 简介:(continuedfromIssue61)TextualEnhancementThereareanumberofstudiesthathaveinvestigatedtheeffectsoftextualenhancementondrawingthelearner'sattentiontogrammar,andthemethodhasbeendescribedastheleastexplicitandtheleastintrusivemethodoffocusonform(Doughty&Varela,1998).Itinvolveshighlightingcertainfeaturesofinputthatmightgounnoticedundernormalcircumstancesbytypographicallymanipulatingthemthroughboldfacing,italicizing,underlining,orcapitalizing.Theassumptionisthatsuchmanipulationsenhancetheperceptualsaliencyofthetargetstructures,andthis,hence,increasestheirchanceofbeingnoticed.Arelatedtechniqueisthepro-

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  • 简介:wholesale/retail ,China’s ,At 

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