Results 61 to 70 of about 306,449 (221)

Differential effects of concentric and eccentric contractions on the primary motor cortex in healthy young and elderly participants

Frontiers in Aging Neuroscience
IntroductionAging is associated with a decline in musculoskeletal function, particularly muscle weakness, which affects a significant proportion of older adults and is associated with reduced quality of life and increased mortality.
Marion Desachy, Marion Desachy, Nelly Héraud, Julien Lagarde, Simon Pla, Alain Varray   +5 more
doaj   +1 more source

Measuring the Eccentricity of Items

, 2017
The long-tail phenomenon tells us that there are many items in the tail. However, not all tail items are the same. Each item acquires different kinds of users.
Kim, Songkuk, Park, Chanyoung
core   +1 more source

The Origin of the Young Stars in the Nucleus of M31

, 2007
The triple nucleus of M31 consists of a population of old red stars in an eccentric disk (P1 and P2) and another population of younger A stars in a circular disk (P3) around M31's central supermassive black hole (SMBH).
Eliot Quataert, Eugene Chiang, Ichikawa S., Nayakshin S., Nieto J.-L., Papaloizou J., Philip Chang, Ruth Murray‐Clay, Thatte N.   +8 more
core   +1 more source

Voluntary Activation and Variability During Maximal Dynamic Contractions with Aging [PDF]

, 2017
Whether reduced supraspinal activation contributes to age-related reductions in maximal torque during dynamic contractions is not known. The purpose was to determine whether there are age differences in voluntary activation and its variability when ...
Hassanlouei, Hamidollah, Hunter, Sandra K., Rozand, Vianney, Senefeld, Jonathon W.   +3 more
core   +1 more source

Resonant capture by inward migrating planets

, 2000
We investigate resonant capture of small bodies by planets that migrate inwards, using analytic arguments and three-body integrations. If the orbits of the planet and the small body are initially circular and coplanar, the small body is captured when it ...
Goldreich P., Peale S. J., Qingjuan Yu, Scott Tremaine   +3 more
core   +2 more sources

Does the short-term learning effect impact vertical jump performance assessment on a portable force plate system?

Frontiers in Sports and Active Living
One of the reoccurring questions that arises during the countermovement vertical jump (CVJ) assessment is whether the learning effect has an impact on the accuracy of the results obtained. Thus, the purpose of the present investigation was to examine the
Damjana V. Cabarkapa, Dimitrije Cabarkapa, Jelena Aleksic, Igor Ranisavljev, Andrew C. Fry   +4 more
doaj   +1 more source

Satellite cell activity is differentially affected by contraction mode in human muscle following a work-matched bout of exercise

Frontiers in Physiology, 2014
Optimal repair and adaptation of skeletal muscle is facilitated by resident stem cells (satellite cells). To understand how different exercise modes influence satellite cell dynamics, we measured satellite cell activity in conjunction with markers of ...
Robert D Hyldahl, Ty eOlson, Tyson eWelling, Logan eGroscost, Allen Clive Parcell   +4 more
doaj   +1 more source

Gravitational self-force on eccentric equatorial orbits around a Kerr black hole

, 2016
This paper presents the first calculation of the gravitational self-force on a small compact object on an eccentric equatorial orbit around a Kerr black hole to first order in the mass-ratio.
van de Meent, Maarten
core   +1 more source

Circumstellar disks in binary star systems

, 2012
In this paper we study the evolution of viscous and radiative circumstellar disks under the influence of a companion star. We focus on the eccentric {\gamma} Cephei and {\alpha} Centauri system as examples and compare the disk quantities such as disk ...
Artymowicz, Bell, Beuermann, Campbell, Cieza, Correia, Desidera, Duchêne, Dvorak, D’Angelo, Eggenberger, Eggenberger, Els, Fragner, Haghighipour, Hatzes, Hubeny, Kley, Kley, Kley, Kley, Kley, Kley, Kraus, Lubow, Marzari, Marzari, Masset, Masset, Nelson, Neuhäuser, Paardekooper, Pourbaix, Queloz, Quintana, Raghavan, Regály, Shakura, Stone, T. W. A. Müller, Thébault, Thébault, Thébault, Torres, van Boekel, van Leer, W. Kley, Whitehurst, Xie, Zucker   +49 more
core   +1 more source

Dynamics of Circumstellar Disks III: The case of GG Tau A

, 2016
(abridged) We present 2-dimensional hydrodynamic simulations using the Smoothed Particle Hydrodynamic (SPH) code, VINE, to model a self-gravitating binary system similar to the GG Tau A system.
Marzari, F., Nelson, Andrew F.
core   +1 more source