简介：Objective:Theototoxicityofpovidone-iodinehasbeendocumentedinanimalstudies.However,thereislimitedevidenceoftheseototoxiceffectsinhumans.Thisisthefirstreporttoshowtheototoxiceffectsofpovidoneiodineinahumansubject.Patient:A36-year-oldwomancametoourhospitalcomplainingofleftunilateralpersistenthearingloss.Onemonthbeforepresentation,herchildhadaccidentallystruckheronherleftear.Sheappliedapproximatelythreedropsofpovidone-iodine(10%weight/volume)intoherleftauditorycanal.Immediatelyafterapplication,shefeltseverepainandvertigo.Anaudiogramrevealedsevereleftunilateralsensorineuralhearingloss.Magneticresonanceimagingshowedmildenhancementoftheleftvestibuleandbasalturnoftheleftcochlea.Conclusions:Evenasingleapplicationofpovidone-iodinecouldcausesignificanthearinglossanddisequilibrium.Itshould,therefore,beusedwithcaution.

简介：Electricalconductionbehaviorofpristineandiodinedopedpolyetherimides(PEI)hasbeeninvestigatedunderbothtransientandsteadystateconditionsintheoperatingtemperaturerange50-200℃atvariouselectricfieldsof12-60kV/cm.Thetransientcurrentsshowthehyperbolicdecaycharacter,andthedecayexponentp(ameasureofcurrentdecayrate)decreaseswithtemperature(7)anddopingconcentration.Theoriginoftransientcurrentshasbeenattributedtothedipolarnatureofcarbonyl((?)C=O)groupsandtheetherlinkagespresentinthemainchainofPEI.Thelowfieldsteadystateconductionisohmicinnature.Themagnitudesofionicjumpdistance(a)valuesdonotfavoranionictypeofconductionasapossibleconductionmechanisminpristineaswellasiodinedopedPEI.TheSchottkycoefficientsestimationsdonotshowthepossibilityofSchottkytypeorPoole-Frenkeltypeconductionmechanismsinthelowtemperatureregion(<120℃),however,inthehightemperatureregion(>120℃)thereisacertainpossibilityofPoole-Frenkeltypeconductionmechanisminbothpristineandiodinedopedsamples.Thedualslopeinthe1gIversus1/Tcurvesforiodinedopedsamplesindicatesthepresenceofmorethanonetypeoftrappinglevels.

简介：霸气是黑色的天性，同oxygen（氧气）一样无处不在。在时尚中多年坚持，水滴石穿，具有阴阳双重性格，一方面是阴柔的、谦逊的、内隐的、舒服的；另一方面是阳刚的、桀骜的、外显的、富于表情的、始终成为流行的主导。

简介：Carbonsupportedgold-iridiumcomposite(AuIr/C)wassynthesizedbyafacileone-stepprocessandwasinvestigatedasthebifunctionalcatalystforoxygenreductionreaction(ORR)andoxygenevolutionreaction(OER).ThephysicalpropertiesoftheAuIr/Ccompositewerecharacterizedbytransmissionelectronmicroscopy(TEM),X-raydiffraction(XRD)andX-rayphotoelectronspectroscopy(XPS).AlthoughtheAuandIrintheAuIr/Cdidnotformalloy,itisclearthattheintroductionofIrdecreasestheaverageAuparticlesizeto4.2nmcomparedtothatintheAu/C(10.1nm).BysystematicalanalysisonchemicalstateofmetalsurfaceviaXPSandtheelectrochemicalresults,itwasfoundthattheAusurfacefortheAu/Ccanbeactivatedbypotentialcyclingfrom0.12Vto1.72V,resultingintheincreasedsurfaceroughnessofAu,thusimprovingtheORRactivity.Bythesamepotentialcycling,theIrsurfaceoftheIr/Cwasirreversiblyoxidized,leadingtodegradedORRactivitybutuninfluencedOERactivity.FortheAuIr/C,IrprotectsAuagainstbeingoxidizedduetothelowerelectronegativityofIr.CombiningtheadvantagesofAuandIrincatalyzingORRandOER,theAuIr/CcatalystdisplaysanenhancedcatalyticactivitytotheORRandacomparableOERactivity.Inthe50-cycleacceleratedagingtestfortheORRandOER,theAuIr/Cdisplayedasatisfiedstability,suggestingthattheAuIr/Ccatalystisapotentialbifunctionalcatalystfortheoxygenelectrode.

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简介：Theanalyticembedded-atompotentialforoxygenisdevelopedfromtheexperimentaldataandtheresultsofthefirst-principle.ThepotentialisusedtopredictthegeometriesandenergiesofO3,fcc,bcc,scanddiamond.Thepredictionsareingoodagreementwithexperimentaldataavailableandothertheoreticalresults.

简介：ＯｘｙｇｅｎＩｓｏｔｏｐｅＦｒａｃｔｉｏｎａｔｉｏｎｏｆＣｏｍｍｏｎＲＥＦｌｕｏｒｏｃａｒｂｏｎａｔｅＦａｎｇＴａｏ（方涛）（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｃｈｅｍｉｓｔｒｙ，ＡｃａｄｅｍｉａＳｉｎｉｃａ，Ｇｕｉｙａｎｇ５５０００２，Ｃｈｉｎａ）Ｒｅ...

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简介：Baosteel's60000m3/hairseparationunit(ASU)isthelargestoxygengeneratingsysteminChina.Theoperationalcostofsuchagiantsystemisveryhigh.Howtoreducetheoperationalcostisacriticalissue.Thispaperdiscussesthesystem'scharacteristics,thecurrentoperationalstatusandthedifficultiesinreducingthecost,andanalyzesrelevantindicators,suchasthetechnicalandeconomicalindicatorsofindividualunitsandsystemsaswellastheindicatorsconcerningthecosts.Therelationshipbetweenthecostandeacheconomicalindicatorandmeasurestooptimizeaneconomicaloperationoftheoxygengeneratingsystemarealsodiscussedinthispaper.

简介：是的乙炔为选择催化减小的一个减少的代理人(C2H2-SCR)不在一系列金属上被调查交换HY催化剂，在0.16%的反应系统没有，0.08%C2H2，和9.95%O2(卷百分比)在他。到有烃效率的N2的75%没有变换大约1.5在300附近在Ce-HY催化剂上被完成??慍楤摮汯湩獥？？

简介：Theeffectsofrefractoriesofquartz-corundunconsistingof45mass%quartzand55mass%corundum,fusedcorundumandfusedmagnesiaonthetotalaxygencontent(TOC)andthecompositionofinclusionsininterstitialfree(IF)steelwerestudied.3mass%microsilicawasaddedintothethreerefractoriesasbinder.Therefractorieswereshapedasliningofthegraphitecruciblebycastablemethod.IFsteelwasplacedinthecrucibles,thentheywereheatedat1600℃for90minand45minrespectively.Oxygencontentsofthesteelsampleswereobtainedbyaxygendeterminator.InclutsionswereanalyzedbySEMandEDS.TheresultsshowthattheTOCofsteelincreasedwithincreaseofIndexofOxygenPotential(IOP)oftherefractories.ThesteelsamplecopedwithMgOrefractorieshavingthelowestIOPhasthelowestTOC.

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简介：BulkZr55Al10Ni5Cu30metallicglassplateswithadimensionof85mm×35mm×4mmandacomplicatedplatewerefabricatedbyinjectingcastingmethodusingspongyzirconiumandindustrialpurityaluminum,nickelandcopperasrawmaterials.Itwasshownthattheholdingtimeofliquidmetalsatelevatedtemperatureshadagreatinfluenceontheoxygencontentoftheplatesduetothecontaminationresultingfromtheatmosphere.Increasingholdingtimeresultedintheincreaseofoxygencontentintheinjectedalloy.Theglasstransitiontemperaturesofthebulkmetallicglassplatesarehigherthanthatreportedintheliteratureandcrystallizationtemperatureislowerfortheonewithhigheroxygencontentatthesameheatingrate.Theextensionoftheundercooledliquidregion△Txreachingabout87Kis3Khigherthanthatpreviouslyreportedand26Khigherthanthatwithoxygencontentof0.076wtpctfortheonewithoxygencontentashighas0.065wtpct.Thereforetheoxygencontentofthealloyhasasignificantinfluenceontheglassformingabilityandthermalstabilityofbulkmetalglass.Itissuggestedthatdirectcorrelationbetweenhighglassformingabilityandlarge△Txisonlyvalidforawell-definedIowoxygenconcentrationorhastobereconsideredbyincorporatingoxygenasanadditionalalloyingelement.

简介：这研究为预言并且分类氧绑定蛋白质描述一个方法。第一，支持向量机器(SVM)模块为预言氧绑定蛋白质用氨基酸作文和dipeptide作文被开发，并且分别地完成了85.5%和87.8%的最大的精确性。第二，一个SVM模块基于氨基酸作文被开发，分别地分类进有为erythrocruorin，蚯蚓血红蛋白，血蓝蛋白，血红素，腿血红素，和肌球素蛋白质的95.8%，97.5%，97.5%，96.9%，99.4%，和96.0%的精确性的六个班的预言的氧绑定蛋白质。最后，一个SVM模块为分类氧绑定蛋白质用dipeptide作文被开发，并且分别地为上述六个班完成了96.1%，98.7%，98.7%，85.6%，99.6%，和93.3%的最大的精确性。所有模块被五倍的生气确认训练并且测试。基于上述途径，网服务者Oxypred为预言并且分类氧绑定蛋白质被开发(从http://www.imtech.res.in/raghava/oxypred/可得到)。

简介：Yifeng(TE17),Tinghui(GB2),Zhongzhu(TE3)andXiaxi(GB43)wereselectedaskeyacupointsplushyperbaricoxygentotreat50casesofsuddendeafness,andthetotaleffectiveratewas98%.

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