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390 个结果
  • 简介:Ageneralstudyofnon-staticrestrictedclassofaxialsystemwithanisotropicdissipativeexpansion-freefluidundergeodesicconditioniscarriedout.Itisfoundthatexpansion-freemodelmustbedissipativeundergeodesicconditiontopreserveaxialsymmetry.Wealsoinvestigatethissystemwithoutgeodesiccondition.Finally,theroleofdissipationisexploredviatransportequation.

  • 标签: general RELATIVITY DISSIPATIVE systems ANALYTICAL
  • 简介:target language readers might have different feeling between translation and the original. Those translations which added translator’s own emotion were not according with the standard of translation. Translation should avoid to add personal emotion to the original works. 3.3 Free translation skill needs extensive knowledge and culture of both source language and target language. Free translation gives translators some leeways. Translators should use then correctly. Not only should translators comprehened the meaning of the original message,translaors should use free translation. Free translation is a translation skill which is active. But free translation can not add personal emotion to the original works. Translation must be acceptable which use free translation. And free translation skill needs extensive knowledge and culture of both source language and target language. If a translator wants to use literal translation and free translation proficiently,也会说你的坏话. Free translation does not strachy the form of the original. If translators want to use free translation proficiently. You’d better grasp extensive knowledge and culture of both source language and target language. CONCLUTION

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  • 简介:Inthelightofφ-mappingmethodandtopologicalcurrenttheory,theeffectofdisclinationlinesonthefreeenergydensityofnematicliquidcrystalsisstudied.ItispointedoutthatthetotalFrankfreeenergydensitycanbedividedintotwoparts.Oneisthedistortedenergydensityofdirectorfieldaroundthedisclinationlines.Theotheristhesaddle-splayenergydensity,whichisshowntobecentralizedatthedisclinationlinesandtobetopologicallyquantizedintheunitofkπ/2whentheJacobiandeterminantofthedirectorfielddoesnotvanishatthesingularitiesofthedirectorfield.ThetopologicalquantumnumbersaredeterminedbytheHopfindicesandBrouwerdegreesofthedirectorfieldatthedisclinationlines,i.e.,thedisclinationstrengthes.WhentheJacobiandeterminantvanishes,thegeneration,annihilation,intersection,splittingandmergingprocessesofthesaddle-splayenergydensityaredetailedintheneighborhoodsofthelimitpointsandbifurcationpoints,respectively.Itisshownthatthedisclinationlinewithhightopologicalquantumnumberisunstableandwillevolvetothelowtopologicalquantumnumberstatesthroughthesplittingprocess.

  • 标签: 旋转位移线 自由能量 结晶体 分歧理论
  • 简介:Polyamide-1010sampleswereirradiatedinvacuumatroomtemperaturebyCobalt-60γ-rays.Thefreeradicalsformedinirradiationwerestudiedbymeansofelectronspinresonance(ESR)techniques.TheESRspectraconsistedofaquartetandasuperimposedsingletwhichwereattributedtoradical-CO-NH-CH-CH2and-CH2-C=O,respectively.TheeffectsoftemperatureandcrystaUinityontheradicalswerediscussedandthemechanismfortheproductionanddecayoftheradicalswasalsoproposed.

  • 标签: ESR RADIATION POLYAMIDE Free RADICAL
  • 简介:沿着山东省的东方海岸有教养的牡蛎的化学成分的每月的差别被分析。部件分析了包括的肝糖,丰满的酸和免费氨酸(FAA)。肝糖的内容在1月和三月高(2.89并且2.82g(100g)~(-1)平均,分别地)并且在10月低(2.07g(100g)~(-1)平均)。在10月的中立类脂化合物的低内容反映了牡蛎的相对差的营养的价值(1.42g(100g)~(-1)平均)。牡蛎的主要的丰满的酸是十六酸酸(16:0),油的酸(18:1),eicosapentaenoic酸(EPA,20:5ω-3)并且docosahexaenoic酸(DHA,22:6ω-3)。牡蛎的majorFAAs是公牛的,Glutamicacid,Glycin,丙氨酸,精氨酸和脯氨酸。公牛有它的内容的最丰富的FAA从603mg(100g)正在~(-1)到1139mg(100g)~(-1)。肝糖的高内容,丰满的酸和FAA显示出的多元不堡和沿着山东省的东方海岸有教养的那只牡蛎是在1月和三月好的营养联盟者。

  • 标签: 牡蛎 糖原 脂肪酸 氨基酸
  • 简介:Thispaperevaluatestheutilizationoffreeradicalchemiluminescenceimagingandtomographicreconstructiontechniquestoassessadvancedinformationonreactingflows.Twodifferentlaboratoryflowconfigurationswereanalyzed,includingunvonfinednon-premizedjetflamemeasurementstoevaluateflamefuel/airmixingpatternsattheburner-portofatypicalglass-furnaceburner.Thesecondcasecharacterizedthereactionzoneofpremixedflameswithingasturbinecombustionchambers,basedonalaboratoryscalemodelofaleanprevaporizedpremixed(LPP)combustionchamber.Theanalysisshowsthatadvancedimagingdiagnosiscanprovidenewinformationonthecharacterizationofflamemixingandreactingphenomena.TheutilizationoflocalC2andCHchemiluminescencecanassessusefulinformationonthequalityofthecombustionprocess,whichcanbeusedtoimprovethedesignofpracticalcombustors.

  • 标签: 碳氢化合物 火焰特性鉴别 燃烧室设计
  • 简介:Bytakinginfiniteperiodicbeamsasexamples,themutualvariationalprincipleforanalyzingthefreewavepropagationinperiodicstructuresisestablishedanddemonstratedthroughtheuseofthepropaga-tionconstantinthepresentpaper,andthecorrespondinghierarchicalfiniteelementformulationisthende-rived.Thus,itprovidesthenumericalanalysisofthatproblemwithafirmtheoreticalbasisofvariationalprin-ciples,withwhichonemayconvenientlyillustratethemathematicalandphysicalmechanismsofthewaveprop-agationinperiodicstructuresandtherelationshipwiththenaturalvibration.Thesolutionisdiscussedandex-amplesaregiven.

  • 标签: free wave propagation PERIODIC structures NON-SELF-ADJOINT
  • 简介:Theadsorptionoffreeacidoflowconcentrationbycrosslinkedchitosanresinwasfollowedbyelectrochemicalexperimentaltechnique.Theeffectofacidconcentrationandthemediaonadsorptionwasdiscussed.Theexperimentalresultsshowthatboththeapparentrateconstantandtheinteractionenergybetweentheadsorbentandadsorbatearedecreasedwhiletheconcentrationofhydrochloricacidisincreased.Intheadsorptionsystem.theadsorptionwaseffectedbyaddiitonoforganicsolvent.

  • 标签: 聚氨基葡糖树脂 吸附 实验
  • 简介:垂直地在免费表面上侵犯的一口2D槽喷气的流动特征被大埃迪模拟(LES)数字地与一个动态Sub-GridScale(SGS)模型一起调查。σ-坐标转变被介绍印射深度变量物理领域到一件深度制服计算领域。裂口操作员计划,把答案过程切成移流,散开和压力繁殖步,被采用解决即时速度和压力地。一个充分非线性的Lagrange-Euler方法被用来计算免费表面举起。数字结果证明喷气在Eestablished流动(ZEF)的地区保留你方类似,当喷气的骚乱逐渐地变从时对各向同性在表面冲击(ZSI)的地区各向异性。当喷气接近免费表面时,中心线速度很快减少并且流动被免费表面偏斜。二口对称的表面喷气在水平喷气(ZHJ)的地区被形成。超高的AnapproximateGuassian分发也在免费表面上被形成。Thecomputed结果在对可得到的试验性的数据的好同意。

  • 标签: 垂直射流 自由表面 数字研究 LES
  • 简介:Ageneralstochasticmodeloftheatmosphericpressureattheoceansurfacewasproposed,inwhichthepressurevariationwasrepresentedbyaspectraldecompositionthrougharandomprocessoforthogonalincrements.Fromthebasicequationsofidealandincompressiblefluidasetofperturbationequationsuptosecondorderhadbeenderivedandsolved.Thepressurevariationintheflowfieldhadbeencalculatedusingtheexplicitsolutionsobtained,andwhichdemonstratedaclearrelationbetweentheatmosphericpressureandtheoneatthebottomofdeepocean.Itcanbeseenthatthereisapartofthepressurevariationwhichisnotattenuatingwiththedepth.TheresulthadbeencomparedwiththoseofLonguet-HigginsandKadotaetal.andallpreviousresultsarecontainedinthesolutiongiveninthisartice.Therestrictiononthepreviousworkswithregardtotheprobabilitylawhasbeenremoved,andallconclusionsarededucedwithoutspecificassumptions.Theflexibilityoftheproposedmodelallowsforfurthergeneralizationandextensioninthephysicalaspectsandstatisticaltreatment.

  • 标签: 水动力学 水力学 动力学特征 研究
  • 简介:Theformationoffreeradicals(?)OHand(?)Hinanaturallyair-saturatedaqueoussolutionexposedtotherapeuticCWultrasoundatafrequencyof820kHzhasbeenconfirmedbyusingspintrapping5,5-dimethyl-1-pyrroline-1-oxide(DMPO)andelectronspinresonance(ESR)technique.Itissuggestedthattheseradicalsareformedduetothehightemperatureandpressureproducedbytheultrasonictransientcavitation.Thetransientcavitationthresholdisfoundat0.537-0.632W/cm2underasonicationtimeof3minutes.Withincreasingsoundintensitytheyieldoffreeradicals(?)OHraisesrapidlyattheintensityrangingfrom1—2W/cm2,andnolongerincreaseisobservedatabove3W/cm2.Thesoundintensity(I)dependenceoftheyieldof(?)OH(D)canbeapproximatelydescribedbyaregressionequation:D=8.1(I1/2-(Ic)1/2)1/2,whereIc=0.667W/cm2.UnderafixingsoundintensitytheyieldofOHincreasesmonotonouslywiththesonicationtime.

  • 标签: saturated CAVITATION minutes TRAPPING EXPOSED deviation
  • 简介:make the translation accord with the expressive way of target language. So make the translation acceptable. A translation which translated literally is close to the original. But literal translation is not omnipotent. Some sentences should not translate literally,it is a skill of translation. All in all. literal translation is not word-for-word translation. Literal translation is acceptable and nimble. 2.3 Some sentences should not translate literally. Some source language sentences are very difficult to translate literally. It only though of the meaning of surface,Any source language which does not accord with the expressive way of target language should not use literal translation. For example

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  • 简介:在这篇论文,明智的NCP功能为非线性的不平等被建议的有片的一个QP免费的可行方法抑制了优化问题。新NCP功能arepiece明智的线性合理的、常规伪smooth并且有好性质。这个方法是KKToptimality条件的方程重新阐述的线性系统的基于的在解决方案,由使用thepiecewiseNCP函数。这个方法是没有假定严格的补充条件能、全球性会聚的工具,累积的孤立的海角指。而且,活跃限制的坡度没被请求线性地独立。可以被伪获得的次矩阵--牛顿方法,没被请求一致地积极明确。初步的数字结果显示这个新QP免费的方法是相当有希望的。

  • 标签: 拘泥最优化 半光滑性 非线性互补 收敛
  • 简介:Preliminarydesignandsimulationofafreepistonenginesuitableforsmall-scaleenergyproductionindistributedenergysystemsispresentedinthispaper.Theproperties,particularlythepropertiesofgassealsoftheenginearesimulatedusingasimulationprogramdevelopedforthiscase,andtheresultsareutilizedinpreliminarymaindesignparameterselection.TheenginesimulationprogramwasdevelopedbycombiningandmodifyingthesourcecodesofthesimulationandcalculationprogramsobtainedfromHelsinkiUniversityofTechnology,TampereUniversityofTechnology,andLappeenrantaUniversityofTechnology.Becauseofthecontact-freelabyrinthsealusedinthepiston,theefficiencyofthemotorislowerthantheefficiencyofaconventionalmotorwithoillubricatedpistonrings.Ontheotherhand,thelackofbearinglosses,andthelackoflossesassociatedwithacrankshaftsystemandagearbox,aswellasthelackoflubricationoilexpenses,compensatesthiseffect.Asanetresult,thisnewmotorwouldperformslightlybetterthantheconventionalone.Beingcompletelyoil-free,itisveryenvironmentallyfriendly,anditsexhaustgasesarecompletelyfreeofoilresidualswhicharecausingproblemsinnormalgasmotors.

  • 标签: 自由活塞发动机 迷宫密封 流体动力学模型 分布式能源系统 模拟仿真 密封性能
  • 简介:Chinawillfaceareboundofgeneticallytransmitteddiseasesinnewbornsinthreetofiveyearsifthetrendofrapidlydecliningpre-maritalphysicalexaminationsisnotreversed,accordingtoGuXiulian,ViceChairmanoftheStandingCommitteeoftheNationalPeople'sCongress.

  • 标签: 中国 婚检 疾病预防 婚姻制度
  • 简介:因为免费表面旋涡吸收的空气在抽的系统上导致噪音,颤动,和成穴腐蚀,免费表面旋涡控制在一个泵池系统是重要的。在这研究,在泵吸入的免费表面旋涡和空气吸收的变化被部分(VOF)方法的体积与稳定的多相的流动模型一起调查了以便确切代表免费表面旋涡的行为。同类的免费表面模型被用来使用空气和水的相互作用。结果证明由免费表面旋涡运动的空气吸入能用空气体积部分的iso表面被设想。旋涡用免费表面做空气列到泵吸入。另外,免费表面旋涡能被安装窗帘墙控制,这被发现。

  • 标签: 自由表面 旋涡控制 数值模拟 诱导 进气道 泵送系统