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  • 简介:So that's the fax machine. The printer is over here on our right and the photocopier is just next to that. Let me show you how the photocopier works . OK,- Hi Helena,.. I think we can probably sit about twenty people - and that's quite big… So if you need to use that

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  • 简介:Owingtothedevelopmentofnewproductsandhigherrequirementofproductproperties,thecurrentexistinginductionheatingtechnologyofBaosteelcannolongersatisfythenewrequirementsoftheproductline.Controloftheinductionheatingtemperaturetoanappropriatevalueisakeyconsiderationininductionheatingtechnology.Toobtainacculturatedtemperatures,investigationswerefocusedontheparametersofaninductionheatingsystem,includingthoseofinductionheatingequipmentandheatingprocesses.Intheseinvestigations,computersimulationwasusedtomodeltheinductionheatingprocess,followedbyphysicalexperimentationtoverifyandimprovethesimulationmodel;finally,optimizedinductionheatingparametersweresuggested.Theuseofcomputersimulationsdramaticallydecreasedphysicalexperimentaltimes,andthecomputedheatingparameterswereusedtoguidethephysicalexperimentationanddesignoftheproductline;thisincreasedtheefficiencyofsubsequentinvestigations.ThisstudyfocusesonthedevelopmentofinductionheatingtechnologyinBaosteel,whichincludestheoverallinductionheatingtechnologyusedinmanufacturingbackuprollersandinthethermomechanicalcontrolprocess.

  • 标签: 感应加热技术 宝钢 计算机模拟模型 感应加热系统 感应加热设备 物理实验
  • 简介:Theapplicationofinductionplasmatechnologydevelopedforthesynthesisofnanometricpowdersissummarized.Abriefdescriptionofthescientificbasisfortheinductionplasmaprocessesisgiven,followedbythepresentationofaninductionplasmasystemdevelopedbyTekna,togetherwithvariousexamplesofthenanopowderssynthesizedusingitsfacilities.Theadvantagesoftheinductionplasmaprocessoveralternativetechniquesanditsadaptabilityintoindustrialscaleoperationisparticularlyillustrated.Somespecificissuesrelatedtothenanopowdersynthesisprocessarealsodiscussed.

  • 标签: 等离子体过程 综合开发利用 纳米粉体 感应 等离子技术 粉体合成
  • 简介:Thetemperaturedistributionofsteelplatesisaffectedbyheatingratesandheatingcurvesintheprocessofinductionheating.Themagneticfluxdensityinsidetheinductionfurnacewasmeasured,thedistributionofmagneticfluxdensitywasanalyzedandtheuniformareaoftheinductionheatingtemperaturedistributionwasascertained.Thelocationsformeasuringtemperatureweresetandthetemperatureindifferentprocesseswasmeasured.Theinfluenceofheatingratesandheatingcurvesonthetemperature...

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  • 简介:超声能不仅在检查,而且在治疗被使用,特别在癌症的治疗。Sonodynamic治疗是使用超声提高作为sonosensitizers知道的代理人的细胞毒素的效果的一个试验性的癌症治疗方法。它在vitro并且在vivo被测试了。超声能在一些直接改变房间膜渗透的条件下面渗透织物和房间,从而在某度允许外长的分子的交货进房间。超声能禁止增长或在vitro或在vivo导致癌症房间的apoptosis。低频率的显示的最近的研究和低紧张的超声能导致房间apoptosis,它能被sonodynamic敏感加强,microbubbles,化学疗法的药等等。超声的大多数类型通过导致癌症房间的apoptosis压制了癌症房间的增长。apoptosis的机制不是清楚的。在这评论,我们将集中于并且由超声讨论癌症房间apoptosis的正式就职的机制。

  • 标签: 肿瘤细胞凋亡 超声诱导 疗法 超声波 低强度超声 毒性作用
  • 简介:ThenewspreadingconchosporesotPorphyrayezoensis,P.haitanensisandP.katadaivar.hemiphyllaareinducedbyN-Methy-N'-Nitro-N-Nitrosoguanidine(NG),astrongmutagentoinducethemutantofchromatophore.Itisshowedthat(1)nomutantshavebeeninvestigatedinallcontrolgroup.(2)TheconchosporesofallthethreespeciesofPorphyraareeasytobeinducedbyNGfortheyareinthestageofbreeding,Inthelowestdose(10μg/mL)ofthisexperiment,themutantrateofP.yezoensisisupto57.9%,thatofP.haitanensis30.7%andthatofP.katadaivar.hemiphylla51.7%.(3)Themutantratecannotincreaseobviouslybyincreasingthereagentconcentrationorprolongingtheinductiontime.Withinthescopeofexperiment,theinducementeffectsofthreespeciesofPorphyraaremuchsimilar,andthemutantrateisnear50%.TheoptimuminductionconcentrationofNGis10μg/mL,andtheoptimuminductiontimeis30minutes.

  • 标签: Porphyra MUTANT of chromatophore conchospore N-Methy-N'-Nitro-NNitrosoguanidine
  • 简介:AneuploidyembryosofPinctadamartensiiDunkerareproducedduringtetraploidinductionbyinhibitingthefirstpolarbodyineggsfromtriploidfertilizedwithhaploidspermswithcytochalasinBtreatment.Chromosomeanalysisrevealsthatthereare88.18±6.79%aneuploidyembryos,and28.70%aneuploidsinpearloystersofone-yearageTheseaneuploidshavefivechromosomalconditions,suchas2n+1(29),2n+2(30),3n-2(40),3n-1(41)and3n+1(43).Resultsofgrowthmeasurementshowthatthereisnosignificantdifferencebetweenaneuploids(asagroup)anddiploidsinbodysizeandweight(p>0.10),buttheaneuploideisobviouslydifferentfromtriploid(p<0.01).Themeanbodysizeandweightofaneuploidsindiploidcondition(2n±1and2n±2)aresignificantlysmallerthanthoseofdiploids(p<0.01),butaneuploidswithintriploidcondition(3n±1and3n±2)arenotsmallerthandiploidsinbodysizeandweight(p>0.1).ThisstudyindicatesPinctadamartensiiDunkercouldtolerateaneuploidyby7~14%ofthehaploidgenome,andthataneuploidsofthisspeciesareviableundercertainconditions.

  • 标签: aneuploid triploid PINCTADA martensii Dunker
  • 简介:Thisstudypresentedanoff-lineidentificationmethodofinductionmotor(IM)parameters.Beforestartup,theinverterdriveperformedautomaticallyamodifiedDCtest,alocked-rotortest,ano-loadtestandastep-voltagetesttoidentifyalltheparametersofaninductionmotor.Nomanualoperationandspeedsignalswererequiredintheprocess.Inordertoobtaineffectivemessagesandimprovetheaccuracyofidentification,thediscretefastFouriertransform(DFFT)andtheleast-squareswereusedtoprocessthesignalsofcurrentsandvoltages.Aphase-voltagemeasuringmethodformotorswasalsoproposed,whichmeasureddirectlytheactualconductingtimeofthreeupperswitchesintheinverterwithoutneedforadead-timecompensator.Thevalidity,reliabilityandaccuracyofthepresentedmethodshavebeenverifiedbytheexperimentsonaVSI-fedIMdrivesystem.

  • 标签: 感应电动机 参数识别 相电压 离散快速傅立叶变换
  • 简介:TheyoungthalliofPorphyrayezoensisandP.haitanensisareinducedbyN-Methy-N'-Nitro-N-Nitrosoguanidine(NG),astrongmutagentoinducethemutantofchromatophore.Itisshowedthatnomutantshavebeeninvestigatedinallcontrolgroups,whileintheinducedgroups,itiseasytofindmutantcellsormutantcellmassesinthethallus.ThepigmentationmutantsmaybetheresultofNGinducement.Themutantrateincreasesobviouslywiththemutagenconcentrationorbyprolongingtheinductiontime.Withinthescopeofexperiment,theinducementeffectsofPorphyrayezoensisareraisedfrom11.2%to28.7%,andthoseofP.haitanensisfrom10.1%to20.2%.Accordingtoourexperiments,theamountofmutantcellsinthesameareadoesnotincreasewiththeinductionintensityTheamountofmutantcellsineverygroupofinducementofbothspeciesofPorphyrachangesverylittlewiththefixedfieldscheckmethod.Thelowestdose(25μg/mL)ofthisexperimenthasahighmutantrate.Themutantrateshowsthepercentageofmutantcellsinallthesurvivedcells,whiletheamountofmutantcellsreflectstheeffectofinducement.ThustheoptimuminductionconcentrationofNGis25μg/mL,andtheoptimuminductiontimeis30minutes.

  • 标签: Porphyra Mutant of chromatophore N-Methy-N'-Nitro-N-Nitrosoguanidine (NG) thallus
  • 简介:Intheproductionofhotextrusionpipes,thebilletwillbeheatedinaninductionfurnace,beforepiercingorextrusion,toacertaintemperature.Theinductionheatingtemperaturefieldprofileinthebilletwillexertaninfluenceonthedeformationprocesses.ThestudyhasdevelopedandataconversionprogramtoconvertthetemperaturedatafrominductionheatingbyANSYStodeformationsimulationsoftwareDEFORM;therefore,notonlytherelativelyaccuratetemperaturefieldcanbemadeavailable,comparedwiththeusuallyassumeduniformtemperaturefield,butalsotheconnectionbetweeninductionheatinganddeformationcanbeestablished,whichisessentialtoevaluatetheprocessingparameters.Numericalsimulationofthepiercingprocessesofdifferenttemperaturefieldsbyinductionheatingwascarriedout,andtheresultshaveshownthatthedifferentinitialtemperaturefieldsinthebilletcanleadtodifferentdeformationcurves,whichindicatesthattheconversionprogramisnecessarytostudytheproductionprocessofhotextrusionpipes.

  • 标签: ANSYS 变形过程 加热温度 感应炉 温度场分布 热挤压管
  • 简介:Thispaperdealswithon-linestateandparameterestimationofareasonablylargeclassofnonlinearcontinuous-timesystemsusingastep-by-stepslidingmodeobserverapproach.Themethodproposedcanalsobeusedforadaptationtoparametersthatvarywithtime.Theotherinterestingfeatureofthemethodisthatitiseasilyimplementableinreal-time.Theefficiencyofthistechniqueisdemonstratedviatheon-lineestimationoftheelectricalparametersandrotorfluxofaninductionmotor.Thisapplicationisbasedonthestandardmodeloftheinductionmotorexpressedinrotorcoordinateswiththestatorcurrentandvoltageaswellastherotorspeedassumedtobemeasurable.Real-timeimplementationresultsarethenreportedandtheabilityofthealgorithmtorapidlyestimatethemotorparametersisdemonstrated.Theseresultsshowtherobustnessofthisapproachwithrespecttomeasurementnoise,discretizationeffects,parameteruncertaintiesandmodelinginaccuracies.Comparisonsbetweentheresultsobtainedandthoseoftheclassicalrecursiveleastsquarealgorithmarealsopresented.Thereal-timeimplementationresultsshowthattheproposedalgorithmgivesbetterperformancethantherecursiveleastsquaremethodintermsoftheconvergencerateandtherobustnesswithrespecttomeasurementnoise.

  • 标签: 参数估计 方法论 非线性系统 感应电机
  • 简介:当前的传感器是在正式就职马达的控制系统的关键元素之一。反映马达操作地位的变量的精确测量是否能被做,将直接在马达系统上并且因此影响控制效果传感器差错的及时、精确察觉是必要的。这份报纸向前根据正式就职马达的数学模型带剩余产生和差错察觉的一个observerbased方法。当非线性的部分是否满足Lipschitz条件,不限制观察员设计,如此的一个观察员的申请被扩展。同时,在柔韧的错误之间的矛盾和差错敏感也被解决。如此的方法的正确性和有效性被在也阐明工程实践的模仿的差错上的试验性的测试验证。

  • 标签: 故障检测方法 感应电动机 电流传感器 LIPSCHITZ条件 电动机控制系统 电机系统
  • 简介:AbstractSepsis is defined as life-threatening organ dysfunction caused by a dysregulated host response to infection. The heart is one of the most important oxygen delivery organs, and dysfunction significantly increases the mortality of the body. Hence, the heart has been studied in sepsis for over half a century. However, the definition of sepsis-induced cardiomyopathy is not unified yet, and the conventional conception seems outdated: left ventricular systolic dysfunction (LVSD) along with enlargement of the left ventricle, recovering in 7 to 10 days. With the application of echocardiography in intensive care units, not only LVSD but also left ventricular diastolic dysfunction, right ventricular dysfunction, and even diffuse ventricular dysfunction have been seen. The recognition of sepsis-induced cardiomyopathy is gradually becoming complete, although our understanding of it is not deep, which has made the diagnosis and treatment stagnate. In this review, we summarize the research on sepsis-induced cardiomyopathy. Women and young people with septic cardiomyopathy are more likely to have LVSD, which may have the same mechanism as stress cardiomyopathy. Elderly people with ischemic cardiomyopathy and hypertension tend to have left ventricular diastolic dysfunction. Patients with mechanical ventilation, acute respiratory distress syndrome or other complications of increased right ventricular afterload mostly have right ventricular dysfunction. Diffuse cardiac dysfunction has also been shown in some studies; patients with mixed or co-existing cardiac dysfunction are more common, theoretically. Thus, understanding the pathophysiology of sepsis-induced cardiomyopathy from the perspective of critical care echocardiography is essential.

  • 标签: Sepsis Sepsis-induced cardiomyopathy Critical care echocardiography Left ventricular systolic dysfunction Left ventricular diastolic dysfunction Right ventricular dysfunction
  • 简介:在这篇论文,无传感器的转矩为混合电的车辆(HEV)的正式就职马达的柔韧的追踪问题应用被探讨。因为在HEV应用程序的马达参数变化比在工业驱动器系统大,常规面向地的控制(FOC)提供差的性能。因此,FOC控制器的新柔韧的基于PI的延期和一个速度流动观察员基于滑动模式和Lyapunov理论被开发以便改进全面表演。模拟结果证明建议无传感器的转矩控制计划关于马达参数变化和装载骚乱是柔韧的。另外,马达的操作流动最佳地被选择最小化电能的消费,它在模拟显示出的精力损失导致重要减小。关键词混合电的车辆-正式就职马达-追踪的转矩-滑动模式这个工作被追求中国(号码2001BA204B01)的工程的州的科技部分地支持。刘燕是Dalian大学的信息工程的学校的一个教授。她在Dalian工业大学在控制理论和应用程序为工业科学度的医生正在完成要求,Dalian。她的研究兴趣包括控制并且建模,参数评价,电的机器的失败察觉,和为正式就职马达的faulttolerant控制在汽车的应用程序开车。邵成是先进控制技术的研究院的一个教授,Dalian工业大学。他的研究兴趣为工业过程包括柔韧的适应控制,聪明的学习控制,和优化控制。

  • 标签: 混合电动车辆 感应电机 无传感器转矩控制 转矩跟踪
  • 简介:音调模型(TM)集成是为官员语音识别的一项重要任务。有效有区别地使用当把TM分数集成到多传递语音识别时,放大因素训练被证明了。而且,可伸缩的上下文依赖者(CD)能更好被申请在模型之间的插值。这条途径的一限制是很多参数将被介绍,它使这种技术容易到训练过度。在这份报纸,我们建议由使用自动地导出的语音的决定树导致上下文依赖者模型重量。在每个树节点的问题被选择在训练数据上最小化期望的识别错误。首先订客观功能被用于问题修剪使树造有效的最小的电话错误(MPE)的近似。连续官员语音识别上的试验性的结果证明方法能够导致最关键的语音的上下文并且与少得多的参数获得重要错误减小,与由使用放大参数的手工地设计的上下文依赖者获得了那相比。

  • 标签: 汉语语音识别 上下文相关 模型集成 感应 训练数据 汉语普通话