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简介:在一个给定的空间区域的全部的精力上的限制被就装入那个区域的一个黑洞的团从雷射摄影术给,它导致一种UV/IR关系:在那个区域的最大的精力密度与M在哪儿的p2/L2,Mp是普朗克常数团,L是在考虑下面的那个区域的空间规模。在宇宙假定最大的黑洞在宇宙通过不安的重力的倒塌被形成,然后不安的规模给原因的连接规模RCC。为重力的不安,R为扁平的宇宙的CC−2=马克斯(+2H2,−)。我们分别地由在UV/IR关系选择原因的连接规模为IR截止学习相应真空精力密度的宇宙论的动力学,在象一个独立地保存的精力部件和一个有效动态宇宙论的常数的真空精力密度的情况中。结果仅仅有选择R−2CC当真空密度作为一个独立地保存的精力部件出现时,2=+2H2,能与当前的宇宙论的观察一致。在这种情况中,模型在文学被称为holographicRicci分级的黑暗精力模型。
简介:1IntroductionSomeorganiccompoundscantransferenergyabsorbedinUVregiontorareearthionswhiletheycoordinatedwiththeionsandthentherareearthionsemitcharacteristicfluoresence.Theluminousintensityandlifetimeofthecoordinatedrareearthionsismuchmorethanthoseofthefreeions.Soscientiststakeaninterestinthesecomplexes[1,2].Inthispaper,inordertoseeknewluminousmaterialexitedwithlowerenergy,EightcomplexesofEu3+withpyridine2,6dicarboxylicacid(H2DPC)、1,10phenanthroline(phen)andmethylbenzoicacid(MBA),including...
简介:Theratfunctionalmaldigestionmodelwasmadebyirregularfeedingforstudyingmechanismsofacupunctureinregulatingrastroidtestinalactivities.ThechangesofthenumberandtheopticaldensityofNo-neuronsingastrointestinalintermuscularnerveswereusedastheindexes.Wistarratswererandomlydividedintoacupuncture,Domperidone,modelandcontrolgroupswithfourratsineachgroup.ThoseratswerefedwithDomperidome1mL/100g/dayatthebeginningofthemodelmakingprocess.Bilateral“Zusanli”(ST36)andright“Weishu”(BL21)werestimulatedfor20minineverysession,onceeverytwodays,continuouslyforonemonth.Onemonthlater,theratswerekilledforsamplingthegastrointestinalwalls.Thesampleswerecutintosectionswhichwerestainedwithimmunohistochemicalmethodforexaminingthenitricoxidesynthase(NOS)reactionwiththereductivecoenzymeⅡ.Theresultsshowedthatacupunctureof“Zusanli”and“Weishu”pointsmightrestoretheNOSactivityofthestomachtothenormallevel.Comparedwiththemodelgroup,Noimmuno-reactionpositiveneurons'numberinacupuncturegroupdecreasedandtheopticaldensityincreased.Theinfluenceofacupunctureontheupperpartofthesmallintestinewasindistinct.ChangesofNOIr-positiveneuronsmaycontributetotheeffectofacupunctureinmodulatinggastrointestinalactivitiesoffunctionalindigestioninclinic.
简介:ICSED(ImprovedClusterShadeEdgeDetection)algorithmandothervariousmethodstoaccuratelyandefficientlydetectedgesonsatellitedataarepresented.ErrorratecriterionisusedtostatisticallyevaluatetheperformancesofthesemethodsindetectingoceanicfeaturesforbothnoisefreeandnoisecontaminatedAVHRR(AdvancedVeryHighResolutionRadiometer)IRimagewithKuroshio.Also,practicalexperimentsindetectingtheeddyofKuroshiowiththesemethodsarecarriedoutforcomparison.ResultsshowthattheICSEDalgorithmhasmoreadvantagesthanothermethodsindetectingmesoscalefeaturesofocean.Finally,theeffectivenessofwindowsizeofICSEDmethodtooceanicfeaturesdetectionisquantitativelydiscussed.
简介:IR-TRACC传感器主要用于WorldSID假人各部位压缩偏移量的数据采集,而假人内部IR-TRACC传感器位移换算方法使用存在偏差,传感器灵敏度标定系数拟合度不高,且没有特定的IR-TRACC传感器标定设备,造成传感器标定灵敏度系数偏差较大。为解决上述问题,对IR-TRACC传感器位移计算及标定方法进行了研究,利用几何法得到了传感器位移换算公式,设计了一种实用简便且精度较高的传感器标定台,并运用最小二乘法拟合及单变量求解得到了传感器灵敏度标定系数的最优解。标定结果表明,经上述方法及算法标定得到的传感器灵敏度标定系数,曲线拟合的最大非线性误差较小。
简介:Forthedevelopmentoffiberopticsfortherangefrom0.2to50.0μm,oneneedslight-stable,nonhygroscopic,ductilecrystalsthatwouldbetransparentwithinthisspectralrangeandhavealackofcleavage,andfromwhichtheflexibleinfrared(IR)fibersareextruded.Thecrystalsbasedonsolidsolutionsofsilverandmonadicthalliumhalidesmeettheconditionslistedabove.Consequently,bydifferentialthermalandxrayanalyses,westudytheTlBr–TlIphasediagramusingthecrystalswithoptimalcompositions,whichwegrowourselves.Wealsomanufacturelight-stablenanocrystallineIRfibersthataretransparentatlongerwavelengthscomparedwithAgCl–AgBrfibers.
简介:AnewlygrownBaGa4Se7crystalhasbeensynthesizedviatheBridgman-Stockbargertechnique.Thisnewcrystalhasadvantagesofhighnonlinearoptics(NLO)coefficients,highlaserdamagethresholds,andwidetransparentregions.TheBaGa4Se7crystalhasbrightapplicationprospectsasanonlineargainmediuminmid-infraredandterahertzregions.Inthispaper,thecrystallinestructureandsyntheticmethodoftheBaGa4Se7crystalareintroduced.Therefractiveindicesandabsorptioncoefficientsalongthreedielectricaxesbetween0.1THzand1.0THzarealsoobtained.Theterahertzdifferencefrequencygeneration(THz-DFG)characteristicsbasedontheBaGa4Se7crystalinthefrequencyrangeof0.1THzto1.0THzareanalyzedtheoreticallyandthephase-matchingconditionsarecalculated.TheapplicationofBaGa4Se7crystalsinterahertzwavegenerationisalsodiscussed.