نتایج جستجو برای: rotation curve

تعداد نتایج: 198320  

2009
M Rigo D Gallo

Methods In this case control study, 11 patients with long thoracic curves (imbalanced three-curve pattern or A1 from the Rigo classification) were treated with a specifically designed RSC brace called "three curves brace with open pelvis." These 11 patients were compared to a control group of 10 patients with the same age and curve magnitude, treated with a classical RSC brace for a three-curve...

2015
Pier Francesco Indelli Angelo Graceffa Andrea Baldini Brielle Payne Gennaro Pipino Massimiliano Marcucci

This study evaluated the influence of modern tibial baseplate designs when using the anterior tibial cortex as a primary rotational landmark for the tibial baseplate in TKA. Eighty patients undergoing TKA were randomized in two groups. Group 1 included 25 females and 15 males receiving a posterior-stabilized (PS) symmetric tibial baseplate while Group 2 included 24 females and 16 males receivin...

2008
Martin Snajdr Valeri Frolov

The capture of a straight, infinitely long cosmic string by a rotating black hole with rotation parameter a is considered. We assume that a string is moving with velocity v and that initially the string is parallel to the axis of rotation of the black hole and has the impact parameter b. The string can be either scattered or captured by the black hole. We demonstrate that there exists a critica...

1999
William H. Kinney Pierre Sikivie

The late infall of dark matter onto a galaxy produces structure (such as caustics) in the distribution of dark matter in the halo. We argue that such structure is likely to occur generically on length scales proportional to l ∼ t0vrot, where t0 is the age of the universe and vrot is the rotation velocity of the galaxy. A set of 32 extended galactic rotation curves is analyzed. For each curve, t...

2003
Ayesha Begum Jayaram N. Chengalur

We present deep, high velocity resolution (∼ 1.6 km sec−1) Giant Meterwave Radio Telescope (GMRT) HI 21cm synthesis images of the faint (MB ∼ −10.6) local group dwarf galaxy DDO210. We find that the HI distribution in the galaxy is not axi-symmetric, but shows density enhancements in the eastern and southern halves of the galaxy. The optical emission is lopsided with respect to the HI, most of ...

Journal: :Monthly Notices of the Royal Astronomical Society: Letters 2019

2006
M. Küppers S. Mottola S. C. Lowry M. F. A’Hearn C. Barbieri M. A. Barucci S. Fornasier O. Groussin P. Gutiérrez S. F. Hviid H. U. Keller P. Lamy

Context. In 2004 asteroid (2867) Steins has been selected as a flyby target for the Rosetta mission. Determination of its spin period and the orientation of its rotation axis are essential for optimization of the flyby planning. Aims. Measurement of the rotation period and light curve of asteroid (2867) Steins at a phase angle larger than achievable from ground based observations, providing a h...

Journal: :IEICE Transactions 2007
Yoshihiko Susuki Yoshisuke Ueda

This letter studies frequency-locked rotations in a phaselocked loop (PLL) circuit as FM demodulator. A rotation represents a desynchronized steady state in the PLL circuit and is regarded as another type of self-excited oscillations with natural rotation frequencies. The rotation frequency can be locked at driving frequencies of modulation signals. This letter shows response curves for harmoni...

2009
Alejandro Luque Jordi Villanueva

Recently, a new numerical method has been proposed to compute rotation numbers of analytic circle diffeomorphisms, as well as derivatives with respect to parameters, that takes advantage of the existence of an analytic conjugation to a rigid rotation. This method can be directly applied to the study of invariant curves of planar twist maps by simply projecting the iterates of the curve onto a c...

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