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500 个结果
  • 简介:GroundedinananalysisoftheuniqueadvantagesofChina-Russiarelations,thepaperarguesthatthetwocountrieshaveestablishedahighlevelofpoliticaltrustandwillcontinuetoworkinconcertonallfronts.ItalsolooksbackathowChinaenteredintoalliancesthroughoutitshistoryandthelessonsithaslearnedfromthoseexperiences.ItemphasizesthatChinadoesnotdeemtheestablishmentofexclusivealliancesorpoliticalblocsasaforeignpolicyoption.

  • 标签: 合作伙伴 中国 俄罗斯 轴心 选项设置 外交政策
  • 简介:高尔夫球场是现代文明的产物,它以优美的环境,成就一项高雅的休闲运动。高尔夫球场的建设,堪称是一件艺术品的制作,一个设计合理,建造品质优良的高尔夫球场,完全可以称之为艺术品。而高尔夫球场的发球台和果岭,就是这件艺术品的精华。

  • 标签: 高尔夫球场 泥炭 艺术品 现代文明 休闲运动 球台
  • 简介:ThephysicalmeaningandessenceofFresnelnumbersarediscussed,andtwodefinitionsofthesenumbersforoffaxisopticalsystemsareproposed.TheuniversalFresnelnumberisfoundtobeN=(a2/λz)*C1+C2.TheRayleigh–Sommerfeldnonparaxialdiffractionformulastatesthatasimpleanalyticalformulaforthenonparaxialintensitydistributionafteracircularaperturecanbeobtained.TheoreticalderivationsandnumericalcalculationsrevealthatthefirstcorrectionfactorC1isequaltocosθandthesecondfactorC2isafunctionoftheincidentwavefrontandtheshapeofthediffractiveaperture.Finally,somediffractionphenomenainoff-axisopticalsystemsareexplainedbytheoff-axisFresnelnumber.

  • 标签: CORRECTION factor OFF-AXIS FRESNEL number OFF-AXIS
  • 简介:Thispaperreportsawind-poweredwaterpumpingsystemimplementedinruralsideofPakistan.ThedesignmethodologypresentedinthispapershallenhancetheefficiencyoftheexistingSavoniusturbine’sperformancebymodifyingitaerodynamically.BladeswithdifferenttwistanglesaredesignedinSolidEdgeandanalyzedusingcomputationalfluiddynamics(CFD)withANSYSFLUENTsoftware.Staticandrotationalanalysesareperformedtogetoptimizedtwistangleandresultsarehighlighted.Theperformancesoftheturbineinbothstaticandrotationalanalysesarecompared.

  • 标签: 能量优化 风力机 垂直轴 FLUENT软件 计算流体动力学 设计方法
  • 简介:Theparticleorbitswhichintersectthemagneticaxisbehavedifferentlyfrombananaones,referredtoaspotatoorbits.ThepotentialimportanceontokamaktransportisemphasizedbyPolitzer,Lin,Tang,andLee,andShaing,Hazeltine,andZarnstoff.However,therearemanyproblemsinthelasttwopapers.Forexample,theEq.(48)inRef.[5]shouldsatisfytheorbitconstraintwhichguaranteessinglevalueofthefunctiongo,thatis,solubilitycondition,andEq.(8)inRef.[6]hasthesameproblem.

  • 标签: 等离子体 磁性轴 环形封闭系统 粒子轨道
  • 简介:Thecentral-axiszoncformedinMesozoic-CeozoiceraandoccurrcdalongLanping-Simaodepres-sion,Yunnan,isaspccialtcctonicunit’ItisnamedfortheLanping-Pucrtectono-thcrmo-metamorphicupwarpingzone.Itsmaincharacteristicsarc:1.Therockhasbcenmetamorphosedandtherccenthotspringsoccura1ongthezone,whichisahigh-tempcrat

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  • 简介:“不怕球场出现问题,就怕没有办法解决问题。”这是利友精化(宁波)有限公司自千禧年成立以来一直肩负在身的使命和持之以恒的态度。

  • 标签: 革命 健康 草坪 球场 公司 有限
  • 简介:Theoreticallyandexperimentally,theeffectsoftemperatureontheweakprincipalaxisoftwistedopticalfiberloopareanalyzed,andtheresultsshowthatthelocationofthepairofweakprincipalaxiswilldriftwithtemperaturechange,whichwilldeterioratethestabilityofsystemwhenappliedtosensorsystem.Inthispaper,theinfluenceofphasedriftofweakprincipalaxisontheperformanceofopticalfibercurrentsensorismainlypredictedtheoretically.Ourresearchresultswillprovideabeneficialreferenceforimprovingopticalfibersensorsystem.

  • 标签: 合股纤维 SOP 双折射光纤 光电传感器
  • 简介:采用1/4波浪板为阶段延迟和波浪板的眼的轴的同时的测量使用的一个简单方法被表明。测量原则的理论分析详细被介绍。在测量,在调整标准1/4以后,挥动板并且快(慢)要测量的板的轴平行到polarizer的通行证轴,要测量的板被450counterclockwisly旋转。一台步进马达被用来旋转分析器。试验性的数据被一个光电探测器收集然后送到一台计算机。根据产量数据曲线,阶段延迟和要测量的板的眼的轴能同时被获得。为了测试方法,位/2和位的可行性,/8波浪盘子被用作例子表明测量过程。阶段延迟测量精确性比0.5脳好10?2。这个方法能被用来方便地测量任意的阶段延迟。CLC数字O436.3

  • 标签: 波片 相位推延 光轴 同时测量 极化态
  • 简介:在这研究,垂直的轴有灵活的片的潮汐的汽轮机被调查。焦点在在汽轮机网络输出力量上分析灵活机翼类型和片灵活性的效果上。到这个目的,五个不同灵活机翼(对称、非对称)被采用。结果证明一个厚灵活对称的机翼罐头的使用有效地与那相比增加产量力量与常规僵硬的片可完成。而且,与不太灵活或僵硬的片对比,高度灵活的片的使用没被推荐。

  • 标签: 轴流式水轮机 柔性 性能分析 叶片 高输出功率 立式
  • 简介:Thestructure,functionandrecognitionmethodofanaxisorbitauto-recognizingsystemarepresentedinthispaper.Inordertomakethebestuseofinformationofformatanddynamiccharacteristicsofmarinesteamturbineaxisorbit,thestructureandfunctionsorneuralnetworkareappliedtothissystem,whichcanbeusedtoauto-recognizeaxisorbitofthesystemturbinerotorusingBPneuralnetwork.

  • 标签: 船舶 图像识别 神经网络系统 回转轴 动力学特性 蒸汽轮机
  • 简介:AbstractPurpose:This study aimed at exploring the application of trauma time axis management in the treatment of severe trauma patients by using the Medicalsystem trauma system.Methods:We performed a retrospective cohort study involving patients with severe trauma. Patients who were admitted before the application of the Medicalsystem trauma system were divided into before system group; patients who were admitted after the application of the system were divided into after system group. Comparison was made between the two groups. For normally distributed data, means were reported along with standard deviation, and comparisons were made using the independent samples t test. Categorical data were compared using the Chi-square test. The Mann-Whitney U test was used to compare nonparametric variables.Results:There were 528 patients admitted to the study during the study period. There was no significant statistical difference in the time from the start of trauma team to arrive at the resuscitation room between the two groups. The time from arrival at hospital to endotracheal intubation, to ventilator therapy, to blood transfusion, to completion of CT scan, to completion of closed thoracic drainage, to the start of operation, as well as the length of stay in resuscitation room and hospital were significantly lower after the application of the Medicalsystem trauma system. The mortality was decreased by 8.6% in the after system group compared with that in the before system group, but there was no statistical difference.Conclusion:The Medicalsystem trauma system can optimize diagnosis and treatment process for trauma patients, and accordingly improve the treatment efficiency and shorten the treatment time. Therefore, the Medicalsystem trauma system deserves further popularization and promotion.

  • 标签: Trauma centers Quality control Emergency treatment Medicalsystem trauma system
  • 简介:ThepreparationofPT/PEK-cfilmsisreportedaswellastheirdielectricandopticalproperties.Thec-axisorientationratioofthefilmsis68%.Dielectricconstantandlossfactorat10kHzisabout4.023F/mand0.003,respectively.Therefractiveindicesofthefilms,neandno,are1.6573and1.6278at0.63μmwavelength,respectively.Theopticalband-gapofthefilmwithathicknessof2.33μmisfoundtobe3.06eV

  • 标签: 定向比 电介质 PT/PEK-C薄膜 光带间隙
  • 简介:Wetransformthesingularintegralequationswithsolutionssimultaneouslyhavingsingularitiesofhigherorderatinfinitepointandatseveralfinitepointsontherealaxisintoonesalongaclosedcontourwithsolutionshavingsingularitiesofhigherorder,andfortheformerobtaintheextendedNeothertheoremofcompleteequationaswellasthesolutionsandthesolvableconditionsofcharacteristicequationfromthelatter.Theconclusionsdrawnbythisarticlecontainspecialcasesdiscussedbefore.

  • 标签: 奇异积分方程 高阶奇点 实轴 无穷远点 可解条件 特征方程
  • 简介:AIMEndothelin1(ET-1),apotentvasoconstrictorpeptide,isalsoregardedasanimportantetiologicalfactorinvolvedinmanycardiacdiseaseslikeheartfailureandcardiachypertrophy.Itmediatespathologicchangesbyformingan""""ETaxis""""attheupstreamtoionchannels,suchasstimulatingoxidantstress,elicitingcardiacremodelingbyproliferationofcardiomyocytes,inducingapoptosis,affectingsignaltransductionpathway,andmodulatingintranucleargenetranscription.ThepurposeofthisstudywastoinvestigatethepivotalrolebyETaxisinworseningarrhythmiasandcardiacfunctioninexperimentalhypertrophiccardiomyopathy(HCM)andheartfailure(HF)models.METHODSTheratHCMmodelwasinducedbys.cL-thyroxin(L-thy,0.2mg/Kg/d)for10d,

  • 标签: ET轴 调节作用 节律运动障碍 强心剂 心肌症 动物模型
  • 简介:Analgorithmforcomputingthe3-Doscillatingflowfieldofthebaldepassageunderthetorsionalvibrationoftherotorisappliedtoanalyzethestabilityinturbomachines.TheinducedflowfieldrespondingtobladevibrationiscomputedbyOscillatingFluidMechanicsMethodandparametricPolynomialMethod.Aftergettingthesolutionoftheunsteadyflowfield,theworkdonebytheunsteayaerodynamicforceactingonthebladecanbeobtained.Thenegativeorpositiveworkisthecriterionoftheaeroelasticstability.Numericalresultsindicatethatthereareinstabilitiesofthetorsionalvibrationinsomefrequencybands.

  • 标签: 燃气透平机 转子叶片 扭转振动
  • 简介:中国监控业著名的前端设备生产厂天津亚安与全球监控网络传输业巨头瑞典AXIS5月22日在Lund正式签约,双方以合作方式向中国大陆及全球推出监控网络产品包括:视频网络服务器、网络摄像机、网络高速球等全线监控网络产品。AXLS充分发挥其世界领先的网络传输技术优势,向YAAN提供技术支持,YAAN则充分发挥其电视监控多年来前端设备开发、生产之经验组织生产,双方将充分发挥各自之长处,共同推进中国乃至世界的监控数字化进程。

  • 标签: 网络监控产品 电视监控行业 网络传输 AXIS公司 YAAN公司
  • 简介:形状skeletonization(即,中间的轴抽取)在许多视觉计算应用程序是强大的例如模式识别,反对分割,登记,和动画。在这篇论文,作者扩展与距离地信息相结合到多角形的网孔基于他们的微分性质代表的任意的3D固体的近似中间的斧子的散开方程的使用。它为通常使用的3D为中间的轴抽取提供一个其他却自然的方法多角形的模型。由沿着时间轴解决PDE,这个系统不能仅仅快速提取输入网孔的基于散开的中间的斧子,而且允许用户设想抽取进程在每次走。另外,建议模型提供用户雕刻提取中间的斧子的一套操作工具箱,然后使用基于散开的技术根据原来的输入数据集恢复相应使变形的形状。这基于骨骼的形状操作为复杂网孔对象的动画和变丑提供一个快、容易的方法。

  • 标签: 扩散方程 中间枢椎提取 PDE技术 多边形网孔