搜索结果: 1-15 共查到“Rotator”相关记录17条 . 查询时间(0.046 秒)
Shoulder Synovial Fluid Lipoprotein Levels and Their Relationship to the Rotator Cuff
HYPERLIPIDEMIA ROTATOR CUFF INTRINSIC ROTATOR CUFF PATHOLOGY ROTATOR CUFF TEAR SYNOVIAL FLUID ANALYSIS
2018/4/24
Introduction Rotator cuff pathology has been proposed to occur through intrinsic and extrinsic mechanisms. Hyperlipidemia has been proposed as a mechanism of intrinsic rotator cuff pathology. This pro...
30 m望远镜的三镜Rotator组件轴承概念设计
30米望远镜 轴承 三排滚柱 有限元法
2014/3/11
针对美国30 m望远镜（TMT）三镜系统在工作时的特殊要求，对三镜系统的Rotator组件轴承进行了设计，提出了在载荷连续变化条件下轴系的设计方法。通过分析该系统独特的运动和受力方式并对比现有大型望远镜结构形式，确定了三排滚柱支撑的轴系方案及轴承结构参数。计算中将天顶角定义为变量，确定了轴承的最恶劣工况及此时的望远镜指向。采用了数值计算和有限元仿真的方法对这一条件下的轴承变形和应力同时进行校核，两...
TMT三镜系统Rotator组件轴承设
望远镜 轴承 角接触 参数
2016/9/2
以TMT三镜系统为对象，对其中的Rotator组件用轴承进行了设计，并对轴承关键参数的选取进行了探讨。首先，通过分析三镜系统的运动模式确定了系统的受载状态；接着基于Hertz弹性变形理论，建立了双列角接触球轴承的载荷-变形公式，采用牛顿迭代法对轴向、径向、角位移量进行求解，得到每个钢球受载和变形的精确解；最后对该轴承设计中的一些关键参数选择对承载能力的影响进行了讨论。计算分析表明，在三镜工作角度范...
Optical Torque Exerted on a Rotator under Illumination of a Vortex Beam
Optical Torque Exerted Rotator Illumination Vortex Beam
2013/7/3
We investigate the torque on a specially shaped rotator produced by a vortex beam. The formulas for the torque alongx, yandzdirections are derived, and numerically calculation is performed. It is foun...
The ATLAS3D Project-- VIII: Modelling the Formation and Evolution of Fast and Slow Rotator Early-Type Galaxies within $Λ$CDM
galaxies elliptical and lenticular cD – galaxies formation – galaxies evolution – galaxies structure
2011/10/21
We propose a simple model for the origin of fast and slow rotator early-type galaxies (ETG) within the hierarchical $\Lambda$CDM scenario, that is based on the assumption that the mass fraction of ste...
Transitions in active rotator systems: invariant hyperbolic manifold approach
Active rotator model Coupled excitable systems Interacting diffusions FokkerPlanck PDE Normally hyperbolic manifolds Pulsating waves
2011/7/7
Our main focus is on a general class of active rotators with mean field interactions, that is globally coupled large families of dynamical systems on the unit circle with non-trivial stochastic dynami...
Transitions in active rotator systems: invariant hyperbolic manifold approach
active rotator systems Normally hyperbolic manifolds Pulsating waves Neuronal models
2011/7/25
Abstract: Our main focus is on a general class of active rotators with mean field interactions, that is globally coupled large families of dynamical systems on the unit circle with non-trivial stochas...
An Ultra-Compact Polarization Rotator Based on Surface Plasmon Polariton Effect
Polarization Surface Plasmon Polariton
2015/5/21
A 3μm long ultra small surface plasmon polariton effect based TM to TE polarization rotator was designed. Effective polarization rotation was achieved in fabricated devices. 10dB PER and 11dB insertio...
The Super Lithium-Rich Red Giant Rapid Rotator G0928+73.2600: A Case for Planet Accretion?
Solar and Stellar Astrophysics (astro-ph.SR)
2011/1/5
We present the discovery of a super lithium-rich K giant star, G0928+73.2600. This red giant (T_eff = 4885 K and log g = 2.65) is a fast rotator with a projected rotational velocity of 8.4 km/s and an...
A Comparison of Whole-Body Vibration and Resistance Training on Total Work in the Rotator Cuff
isokinetic testing shoulder upper extremity
2010/9/8
Whole-body vibration machines are a relatively new technology being implemented in the athletic setting. Numerous authors have examined the proposed physiologic mechanisms of vibration therapy and per...
Axisymmetric rotator models as pulsars：abject failure。
Novel Faraday Rotator by Use of Cryogenic TGG Ceramics
Magnet-optical material Faraday effect High average power laser
2009/6/1
We have proposed the cryogenic TGG ceramics based Faraday rotator for High peak and high average power laser. As the first demonstration of Faraday effect in a TGG ceramics, its Verdet constant at 105...
Rotator Cuff Tear Pain and Tear Size and Scapulohumeral Rhythm
shoulder kinematics scapula biomechanics
2010/9/9
The body of knowledge concerning shoulder kinematics in patients with rotator cuff tears is increasing. However, the level of understanding regarding how pain and tear size affect these kinematic patt...
Behavior of transition amplitude and evolution of the energy of quantum kicked rotator
Quantum chaos quantum kicked rotator
2010/4/8
I give certain analytical properties of quantum kicked rotators, both theoretic and observed from computation. I give an expression for the wave function between two successive impulses. An element of...
Rotator Cuff Fatigue and Glenohumeral Kinematics in Participants Without Shoulder Dysfunction
biomechanics humeral head migration imaging
2010/9/9
Researchers have established that superior migration of the humeral head increases after fatigue of the rotator cuff muscles. In these studies, the investigators used imaging techniques to assess migr...