简介:【摘要】本文通过水质全分析、材料挂片试验、树脂陶瓷复合管道使用等技术措施为后续竖炉除尘管道选材提供了理论支持,从一定程度上改变了除尘管道漏治理困难的局面,除尘管道试用寿命明显延长。随着管道试用寿命的延长,不但除尘管道维修费用明显降低,按照材料性价比计算,单台竖炉年效益为8.45万元,目前完成4台,年效益累计为33.8万元,后续随着改造台数的增加,预计年效益为220万元,而且除尘管道检修中涉及的高处作业、动火作业等危险作业频次随之降低,检修安全风险控制点降低具有十分明显的安全效益,本项目成果316L不锈钢管道、树脂陶瓷活套法兰复合管道后续将在竖炉除尘管道全面推广,也可为后续竖炉除尘器改造提供主体材料选择依据。
简介:在这篇论文,我们与工作假期和假期打断学习M/M/1队列。工作假期最近被介绍,在哪个期间服务者能仍然以更低的率在原来的进行中的工作上提供服务。同时,我们介绍一个新policy:the服务器罐头一旦系统的一些索引例如顾客的数字,在假期时期完成某个值,从假期回到正常工作水平。没有完成假期,服务者可以从假期回来。如此的政策被称为假期打断。我们连接提及的上面二条政策并且假设如果在假期时期期间在在服务结束以后的系统有顾客,服务器将回到正常工作水平,嗨伪出生和死亡过程和矩阵几何的解决方案方法称为,我们为顾客和等待的时间的数字获得分布和随机的分解结构并且提供系统的一些索引。
简介:Inthispaper,asteady-stateMarkovianmulti-serverretrialqueueingsystemwithBernoullivacationschedulingserviceisstudied.Usingmatrix-geometricapproach,variousinterestingandimportantsystemperformancemeasuresareobtained.Further,theprobabilitydescriptorslikeidealretrialandvainretrialareprovided.Finally,extensivenumericalillustrationsarepresentedtoindicatethequantifyingnatureoftheapproachtoobtainsolutionstothisqueueingsystem.
简介:Anecessaryandsufficientconditionofregularityof(0,1,…,m-2,m)interpo-lationonthezerosoftheLaguerrepolynomialsLn(α)(x)(α≥-1)inamanageableformisestablished.Meanwhile,theexplicitrepresentationofthefundamentalpolynomials,whentheyexist,isgiven.Moreover,itisshownthat,iftheproblemof(0,1,…,m-2,TO)interpolationhasaninfinityofsolutions,thenthegeneralformofthesolutionsisf0(x)+Cf1(x)withanarbitraryconstantC.
简介:Stimulationatspecificacupointscanactivatecorticalregionsinhumansubjects.Previousstudieshavemainlyfocusedonasinglebrainregion.However,thebrainisanetworkandmanybrainregionsparticipateinthesametask.Thestudyofasinglebrainregionalonecannotclearlyexplainanybrain-relatedissues.Therefore,forthepresentstudy,magneticstimulationwasusedtostimulatetheNeiguan(PC6)acupoint,and32-channelelectroencephalographydatawererecordedbeforeandafterstimulation.BrainfunctionalnetworkswereconstructedbasedonelectroencephalographydatatodeterminetherelationshipbetweenmagneticstimulationatthePC6acupointandcorticalexcitability.ResultsindicatedthatmagneticstimulationatthePC6acupointincreasedconnectionsbetweencerebralcortexregions.
简介:Objective:Toinvestigatetheunderlyingneurobiologicalmechanismoftheprotectiveeffectofelectroacupuncture(EA)duringcerebralischemia-reperfusion(CI-R).Methods:Inthefirstpartofthestudy,15SDratswereevenlyrandomizedintocontrolgroup,CI-R-48hmodelgroupandCI-R-48h+EAgroup.ThecorticalapoptosisandexpressionofBcl-2andBaxproteinsineachgroupweredetectedbyflowcytometer(FCM).Inthesecondpartofthestudy,75SDratswereevenlyrandomizedintocontrol,CI-R-3min,CI-R-3min+EA,CI-R-48handCI-R-48h+EAgroups.Corticalnorepinephrine(NE)concentrationwasdetectedbyfluorescencespectrometer.CI-Rmodelwasestablishedbyocclusionofthebilateralcommoncarotidarteriesandreperfusion.EA(4~16Hz,1~3V)wasappliedafterreperfusionrespectively.Results:Inthefirstpartofthisstudy,resultsindicatedthatthenumberoftheapoptoticneuronsandtheapoptosisrateofCI-R-48hgroupweresignificantlyhigherthanthoseofcontrolgroup;whilecomparisonbetweenCI-R-48h+EAandCI-R-48hgroupsshowedthatthenumberoftheapoptoticneuronsandtheapoptosisrateoftheformergroupweresignificantlylowerthanthoseofthelatergroup(P<0.05).Incomparisonwithcontrolgroup,afterCI-48h,Baxexpressionwasup-regulatedsignificantlyandBcl-2down-regulatedmarkedly(P<0.05).ComparisonbetweenCI-R-48handCI-R-48h+EAgroupindicatedthatBaxexpressionofthelatergroupwassignificantlylowerthanthatoftheformergroup,whileBcl-2expressionofCI-R-48h+EAgroupwassignificantlyhigherthanthatofCI-R-48hgroup(P<0.05),suggestingthatEAcouldreverseCIinducedreactionsofthesetwoindexes.Inthesecondpartofthestudy,incomparisonwithcontrolgroup,NEconcentrationincerebralcortexofCI-R-3mingroupincreasedsignificantly(P<0.05);whileNEcontentofCI-R-3min+EAgroupwassignificantlylowerthanthatofCI-R-3mingroup(P<0.05).NosignificantdifferencewasfoundbetweenCI-R-3mingroupandcontrolgroupincorticalNEl
简介:Two-dimensional(2D)graphitecarbonnitride(g-C3N4)nanosheetshavebeensuccessfullyusedasasaturableabsorber(SA)inapassivelyQ-switchedNd:LLFlaserat1.3μmforthefirsttime,tothebestofourknowledge.Underanincidentpumppowerof9.97W,theshortestpulsedurationof275nswasacquiredwithoutputpowerof0.96Wandpulserepetitionrateof154kHz,resultinginapulseenergyof6.2μJ.Inaddition,thesaturableabsorptionbehaviorsofzero-dimensional12nmg-C3N4nanoparticles(g-C3N4-NPs)andthree-dimensionalorderedmesoporousg-C3N4(mpg-C3N4)werealsoobserved,althoughtheirmorphologyandstructurewerequitedifferentfrom2Dg-C3N4.Theexperimentalresultsintroducethepotentialapplicationofg-C3N4nanomaterialsasSAsinQ-switchedlasers.
简介:Wereporteddiversesolitonoperationsinathulium/holmium-dopedfiberlaserbytakingadvantageofataperedfiber-basedtopologicalinsulator(TI)Bi2Te3saturableabsorber(SA).TheSAhadanonsaturablelossof53.5%andamodulationdepthof9.8%.Stablefundamentallymode-lockedsolitonsat1909.5nmwithdistinctKellysidebandsontheoutputspectrum,apulserepetitionrateof21.5MHz,andameasuredpulsewidthof1.26pswereobservedinthework.Byincreasingthepumppower,bothbunchedsolitonswithsolitonnumberupto15andharmonicallymode-lockedsolitonswithharmonicorderupto10wereobtained.Toourknowledge,thisisthefirstreportofbothbunchedsolitonsandharmonicallymode-lockedsolitonsinafiberlaserat2μmregionincorporatedwithTIs.
简介:摘要目的探究在红臀新生儿中应用3M无痛保护膜的临床效果及价值。方法从我院2014年08月~2015年08月新生儿病房中的腹泻臀红患儿中随机抽取86例,采取随机数字法将其分别编入研究组与对照组中,各43例。研究组采取便后给予3M无痛保护膜喷洒治疗,对照组采取常规护理方法,并将两组的护理有效率进行统一评价和比较。结果研究组(97.7%)护理的总有效率要显著地高于对照组,组间对比具有显著的差异性(79.1%),具备统计学意义(P<0.05)。结论在红臀新生儿中应用3M无痛保护膜,能够在新生儿娇嫩皮肤表面构建一层保护膜,可有效减少对皮肤的不良刺激,抑制皮肤炎症进一步发展,值得深入讨论和应用。