نتایج جستجو برای: variability of velocity

تعداد نتایج: 21187681  

2000
S. Refsdal R. Stabell J. Pelt R. Schild

From regular monitoring of the Double Quasar QSO 0957+561 A,B there is now general agreement on a time delay of about 416 days. This has made it possible to determine the microlensing residual in the light-curve, see Pelt et al. (1998). We have used two significant microlensing features: 1) A " quiet " period with a variability less than 0.05 mag lasting about 8 years, and 2) A change in the re...

1999
Da Silva

A spectroscopic, photometric and evolutionary study is presented for HD 112989, an active peculiar giant star. The present spectroscopic observations show a significant CaII K&H emission core variability, whereas the UBV photometry shows that HD 112989 has a variable brightness. The rotational velocity for this star, 11.0 kms−1, is about five times larger than the mean rotational velocity for g...

2016
Benedicte Vanwanseele Jeroen Aeles

The aim of the present study was to investigate the difference in the horizontal mechanical determinants of sprint performance in highly-trained elite field hockey players versus subelite field hockey players. Thirty-five highly trained field hockey players (18 elite international players and 17 sub-elite players) were tested during the competitive season. They performed a maximal 40 meter spri...

2000
S. Refsdal R. Stabell J. Pelt R. Schild

From regular monitoring of the Double Quasar QSO 0957+561 A,B there is now general agreement on a time delay of about 416 days. This has made it possible to determine the microlensing residual in the light-curve, see Pelt et al. (1998). We have used two significant microlensing features: 1) A " quiet " period with a variability less than 0.05 mag lasting about 8 years, and 2) A change in the re...

2014
D. Hainbucher A. Rubino V. Cardin T. Tanhua K. Schroeder M. Bensi

Aspects of hydrography and large-scale circulation observed in the Mediterranean Sea during the M84/3 and P414 cruises (April and June 2011, respectively) are presented. In contrast to most of the recent expeditions, which were limited to special areas of the basin, these two cruises, especially the M84/3, offered the opportunity of delineating a quasi-synoptic picture of the distribution of th...

2012
Nicholas Gaddum Tobias Schaeffter Philipp B Beerbaum

Background The variability of pulse wave velocity (PWV) with changing arterial wall stress may reflect the degree of aortic stiffness independent of arterial pressure. We implemented a real-time MR flow technique so as to be able to assess acute changes in PWV due to affected arterial blood and/or intra thoracic pressure. The aim of this study was to assess the accuracy of rapid PWV assessment ...

Journal: :برنامه ریزی و بودجه 0
الهام اطمینان elham atminan سازمان تأمین اجتماعی

there are various ways for estimating velocity of money in economic literature and each has its own specific weaknesses and strengths. particularly, since a great deal of financial innovations and changes have recently taken place affecting the velocity of money, many traditional methods can no langer calculate the equilibrium velocity of money, and they are no longer dependable from the econom...

Journal: :تحقیقات دامپزشکی 0
مجید مسعودی فرد گروه علوم درمانگاهی دانشکده دامپزشکی دانشگاه تهران علیرضا وجهی گروه علوم درمانگاهی دانشکده دامپزشکی دانشگاه تهران سارنگ سروری گروه علوم درمانگاهی دانشکده دامپزشکی دانشگاه تهران سمیه اسدزاده منجیلی دانش آموخته دانشکده دامپزشکی دانشگاه تهران

doppler ultrasound can provide important information about vascular problems through the analysis of blood flow wave-form. the purpose of this study was obtaining the normal images of color doppler and estimation of blood flow velocity parameters of femoral artery in rabbits. left and right femoral arteries of 8 healthy adult new zealand rabbits were evaluated. color and spectral doppler images...

2011
Ashwini K. Rao Pietro Mazzoni Paula Wasserman Karen Marder

The purpose of this study was to examine longitudinal change in gait and motor function in pre-manifest Huntington's disease (HD).We examined ten pre-manifest subjects at baseline, one and five years. Quantitative gait data were collected with an electronic mat (GAITRite®). We analyzed measures related to speed (velocity, step length, cadence), asymmetry (step length difference), dynamic balanc...

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