简介：摘要：全自动体温检测及超温报警提示测温仪是一种针对当前公共卫生安全需求的创新设备。本论文通过对体温检测的需求分析和现有技术的综述，提出了一种基于红外测温技术和智能算法的全自动测温仪设计方案。该设计方案实现了非接触式的体温检测、自动测温数据记录和超温报警提示，具有高效、准确、便捷的特点。论文详细介绍了测温仪的硬件设计和软件开发过程，并进行了实验验证和性能评估。结果表明，该全自动测温仪在体温检测和报警提示方面具有良好的性能和可靠性，可广泛应用于公共场所、医疗机构和企事业单位等。

简介：Thenormalspectralemissivityofniobiumstripspecimenismeasuredusinganewpulse-heatingreflectometrictechnique.Thehemisphericalspectralreflectivityofthesurfaceofastriptangenttoanintegratingsphereisdeterminedbyahigh-speedlock-intechnique.Atthesametime,theradiancetem-peratureofthestripismeasuredbythemulti-wavelengthhigh-speedpyrometerfromapproximately1000Ktothemeltingpoint.Detailsofthemeasurementmethodandoftherelatedcalibrationtechniquesarereported.Resultsofthenormalspectralemissivityofniobiumat633,753,827,and905nmfromroomtemperaturetoitsmeltingpointarepresented.Theaccuracyofspectralemissivitiesisestimatedbetterthan5%.

简介：那些对于是否能活着度过2012年持悲观态度的人，TG给你个活下去的理由。明年SSCTuatara将推出龙年版。中国地区第一位Tuatara车主也有望在2013年提车，至于售价尚不明朗。而龙年版我们似乎听到一个比阿斯顿·马丁One-77更高的报价，99％的人已经没兴趣往下听了吗？好吧．下面说点技术活儿。

简介：Amethodofdetectingdry,icyandwetroadsurfaceconditionsbasedonscanningdetectionofsinglewavelengthbackwardpowerisproposedinthisletter.Thedetectorisusedtoreceivethebackwardscatteredpowerwhichchangeswiththeincidenceangle.Therelationshipbetweenbackwardpowerandincidenceangleisusedtofindouttheeffectiveanglerangeanddistinguishmethod.Experimentandsimulationshowthatitisfeasibletoclassifythesethreeconditionswithinincidenceangleof5.3degree.

简介：冰雪路面行车相比我们惯常行驶的普通路面有很大不同，结冰的路面会导致轮胎打滑，使发动机输出的功率无用武之地，让车辆无法前进。雪地行车无论是对于车辆的轮胎、驱动系统、底盘高低还是驾驶员的驾驶技巧，都是一个不小的考验。然而，在雪地上驾驶时，那种类似滑冰一样的驾乘体验，同样给人别样的驾驶乐趣。本次冰雪试驾项目共有4项，并不复杂，但是颇具代表性，顺利完成这些项目，足以证明在冰天雪地中行驶时可以基本无忧。

简介：引起发动机温度过高的原因有多种多样,当出现经常性水温过高时,一些驾驶员不去查故障的原因,而是简单地将节温器自行拆除掉。也许“开锅”现象会减少些,但却未意识由于拆掉节温器而引起的汽缸磨损加剧。节温器不仅可以调节冷却液的温度,而且可以降低润滑油的稀释率,减缓汽缸腐蚀磨损。据有关资料介绍,当机油温度为52℃时,发动机水套进水温度由82℃下降到27℃,机油稀释率由9%上升到43%;油温为93℃时,机油

简介：Anintracavityfrequency-doubledverticalexternalcavitysurfaceemittinglaser(VECSEL)withgreenlightisdemonstrated.ThefundamentalfrequencylasercavityconsistsofadistributedBraggreflector(DBR)ofthegainchipandanexternalmirror.A12-mWfrequency-doubledoutputhasbeenreachedat540nmwithanonlinearcrystalLBOwhenthefundamentalfrequencyoutputis44mWat1080nm.Thefrequencydoublingefficiencyisabout30%.

简介：Specularandstrongreflectionsarethemainproblemsencounteredduringpartimagedefectinspectionofshinyorhighlyreflectivesurfaces.Inthisletter,weproposeanimprovedilluminationmethodfordefectinspection.Adiffuselightsourceisdesignedbasedonthephysicsanalysisoflightreflection.Thedistributionofintensityissimulatedaccordingtoaknownmodeltoverifytheilluminationuniformityofthesource.Experimentsshowthatdefectexpressivitywhenusingtheproposedilluminationmethodhasabetterperformance.Theopticalmodelisnotonlysuitableforthedefectdetectionofmetalballsbutalsoforthedefectdetectionofplanesandcylinders.

简介：Anopticalfibersensorforultrathinlayersensingbasedonshort-rangesurfaceplasmonpolariton(SRSPP)isproposed,andthesensingcharacteristicsaretheoreticallyanalyzed.Simulationresultsindicatethatevenforadetectinglayermuchthinnerthanthevacuumwavelength,aresolutionashighas3.7×10-6RIUcanbeobtained.Moreover,anaveragethickness-detectionsensitivityof6.2dB/nmisobtained,whichenablesthesensortodetectthethicknessvariationoftheultrathinlayeruptotensofnanometers.Thesensitiveregionofthicknesscouldbeadjustedbytuningthestructureparameters.

简介：Influenceoftemperatureonmeasurementofsurfaceplasmonresonance(SPR)sensorwasinvestigated.SampleswithvariousconcentrationsofNaClweretestedatdifferenttemperatures.Itwasshownthatiftheaffectionoftemperaturecouldbeneglected,measurementprecisionofsaltsolutionwas0.028wt.-%.Butmeasurementerrorofsalinityca,usedbytemperaturewas0.53wt.-%inaveragewhenthetemperaturedriftwas1℃.Toreducetheerror,adouble-cellSPRsensorwithsaltsolutionanddistilledwaterflowingrespectivelyandatthesametemperaturewasimplemented.更多还原

简介：InordertoimprovetheopticalpropertiesoftheⅢ-Ⅴlaserdiodes(LDs)bymeansofH_2Splasmapassiva-tiontechnology,H_2SplasmapassivationtreatmentisperformedontheGaAs(110)surface.Theoptimumpassivationconditionsobtainedare60-Wradiofrequency(RF)powerand20-minduration.Sothelasercavitysurfacesaretreatedundertheoptimumpassivationconditions.Consequently,comparedwithun-passivatedlaserswithonlyAR/HR-coatings,thecatastrophicopticaldamage(COD)thresholdvalueofthepassivatedlasersbyH_2Splasmatreatmentisincreasedby33%,whichisalmostthesameasthatof(NH_4)_2S_xtreatment.Andthelife-testexperimenthasdemonstratedthatthispassivationmethodismorestablethan(NH_4)_2S_xsolutionwet-passivatedtreatment.

简介：兰博基尼汽车公司主席兼首席执行官。史蒂文·温科尔曼（StephanWinkelmann）,1964年10月18日出生于柏林并在意大利罗马长大。在罗马和慕尼黑学习政治学后，进入德国的一家金融公司工作。

简介：磁性的液体(MF)充满了的高敏感方面洞纤维磁场传感器基于表面电浆子，回声(SPR)被设计并且调查。在方面洞纤维以内，以水为基的MF被注入二个方面洞，并且两洞与黄金是涂的由使用SPR效果认识到磁场的测量。MF的折射索引随着不同外部磁场变化，导致搬到另外的波长的反响的波长。而且，当外部磁场从30～210.9Oe增加时，磁场敏感能到达nm/Oe到1.063。

简介：Weinvestigatethesensitivityenhancementofsurfaceplasmonresonance(SPR)sensorsthroughplanarmetallicfilmcloselycoupledtonanogratings.Theeffectsofthethicknessofmetallicfilmandgratingperiodontherefractiveindexsensitivityofthedeviceareanalyzedindetail.Therefractiveindexsensitivityofnanograting-basedSPRsensorsispredictedtobeabout540nmperrefractiveindexunit(RIU)usingoptimizedstructuralparameters.Furthermore,thegratingperiodcanbeusedasaparametertoadjustthewavelengthofresonancereflection.OurstudyonSPRsensorsthroughplanarmetallicfilmcloselycoupledtonanogratingsdemonstratesthepotentialforsignificantimprovementinrefractiveindexsensitivity,sinceitshowsmuchgreaterflexibilityintermsoftuningtheopticalparametersofthedevice.

简介：ThisLetterreportstheformationofperiodicsurfacestructuresonNi–Fefilmirradiatedbyasinglefemtosecondlaserpulse.Aconcavelenswithafocuslengthof-150mmisplacedinfrontofanobjective(100×,NA=0.9),whichtransformstheGaussianlaserfieldintoaringdistributionbytheFresneldiffraction.Periodicripplesformontheablationareaaftertheirradiationofasinglefemtosecondlaserpulse,whichdependsonthelaserpolarizationandlaserfluence.Weproposethattheringstructureofthelaserfieldleadstoasimilartransientdistributionofthepermittivityonthesamplesurface,whichfurtherlaunchesthesurfaceplasmonpolaritons.Theinteractionoftheincidentlaserwithsurfaceplasmonpolaritonsdominatestheformationofperiodicsurfacestructures.

简介：OpticalmethodsandMTTmethodareusedtocharacterizetheantiproliferationeffectofantitumordrug9-aminoacridine(9AA)withandwithoutsilvernanoparticles.IntracellularsurfaceenhancedRamanscattering(SERS)spectraandfluorescentspectraof9AAindicatetheformof9AAadsorbedonthesurfaceofsilvernanoparticles.AlthoughbothsilvernanoparticlesandantitumordrugcaninhibitthegrowthofHelacells,silvernanoparticlescanslowdowntheantiproliferationeffectonHelacellsatlowconcentrationofantitumordrugs.Ourexperimentalresultssuggestthatsilvernanoparticlesmayserveasslow-releasedrugcarriers,whichisimportantinantitumordrugdelivery.

简介：绕组温升是安全标准中的一项重要指标.因导体电阻随温度变化呈现某一规律,所以,测试出断电瞬时的电阻值就可推算出绕组温升.由于绕组断开电源后,温度逐渐下降,所以测得的电阻值并不是绕组断电瞬时的电阻值,我们可以通过短时间间隔读取的电阻测量值,利用作图法和回归分析法来确定断电瞬时的电阻值,从而推算出绕组温升.

简介：长久以来,人们抱怨一些人使用高油耗汽车作为私人座驾,对环保造成极大伤害,通用、雷克萨斯,甚至保时捷等汽车公司顶不住压力终于宣布要研发混合动力SUV。如果你认为这样的消息能止住有钱人高油耗高消费的脚步,那你就错了。近期,又有一种新玩意儿成为富翁们的新宠——超轻型喷气飞机（VLJ）。把VLJ开到停机坪上,抚摸它那光滑的碳纤维合成材料机身,为这款极速400mph的飞机加油,转动钥匙,开始这场1000英里的商务旅行;同时,也开启了新喷气式飞机时代。

简介：Atunableslowlightof2.5-Gb/spseudo-randombinarysequencesignalusinga1550-nmvertical-cavitysurface-emittinglaser(VCSEL)isexperimentallydemonstrated.Theinfluencesofthebiascurrentandthegainsaturationontheslowlightareinvestigated.Withbiascurrentincreasing,tunableopticalgroupdelayupto98psisobtainedatroomtemperature.Demonstrationofthetimedelaybetween16and24psbysignalintensitychangeisreported.Underanappropriatebiascurrent,bytuningtheinputsignaltotrackthepeakgainwavelengthoftheVCSEL,slowlightofapowerpenaltyaslowas1dBisachieved.Withsuchalowpowerpenalty,theVCSELhasagreatpotentialapplicationasacompactopticalbuffer.

简介：Theopticalwavescatteringfromone-dimensional(1D)lossydielectricGaussianrandomroughsurfaceisstudied.ThetaperedincidentwaveisintroducedintotheclassicalKirchhoffapproximation(KA),andtheshadowingeffectisalsotakenintoaccounttomaketheKAresultshaveahighaccuracy.ThedefinitionofthebistaticscatteringcoefficientofthemodifiedKAandthemethodofmoment(MOM)areunified.ThecharacteristicsoftheopticalwavescatteringfromthelossydielectricGaussianrandomroughsurfaceofdifferentparametersareanalyzedbyimplementingMOM.