Results 11 to 20 of about 7,027 (228)
Anti-migratory effect of vinflunine in endothelial and glioblastoma cells is associated with changes in EB1 C-terminal detyrosinated/tyrosinated status. [PDF]
PLoS ONE, 2013 We previously showed that vinflunine, a microtubule-targeting drug of the Vinca-alkaloid family exerted its anti-angiogenic/anti-migratory activities through an increase in microtubule dynamics and an inhibition of microtubule targeting to adhesion sites.
Amandine Rovini +5 more
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ASSIST: An Ephemeris-quality Test-particle Integrator
The Planetary Science Journal, 2023 We introduce ASSIST, a software package for ephemeris-quality integrations of test particles. ASSIST is an extension of the REBOUND framework and makes use of its IAS15 integrator to integrate test-particle trajectories in the field of the Sun, Moon ...
Matthew J. Holman +7 more
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Interactions between solar wind and comets
地球与行星物理论评, 2023 Comets are a class of small, irregularly shaped objects in a solar system consisting mainly of volatile materials. During the approach of a comet to the sun, the neutral component of the volatile matter released by heating in the nucleus becomes charged ...
Chuanpeng Hou, Jiansen He, Jingyu Peng
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Models for the Comet Dynamical Environment [PDF]
Journal of Guidance, Control, and Dynamics, 2007 An outgassing jet model is presented in support of spacecraft navigation for future missions to comets. The outgassing jet is modeled as an emission cone while the comet is modeled as a uniform density triaxial ellipsoid. The comet's motion about the sun is included in the model.
Byram, Sharyl Marie +2 more
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Dust Outburst Dynamics and Hazard Assessment for Close Spacecraft–Comet Encounters
The Planetary Science Journal, 2021 Using the gas drag by sublimating cometary surface ices for the acceleration of dust particles and deceleration by the gravity field of the nucleus combined with basic laws of mechanics, the sizes, velocities, and number densities of escaping particles ...
Uwe Fink +6 more
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The dynamical history of comet Halley [PDF]
International Astronomical Union Colloquium, 1985 AbstractThe history of the attempts to predict the motion of comet Halley is outlined and the importance of the so-called nongravitational forces acting upon this comet is emphasized. Recent orbital work of the International Halley Watch Astrometry Network is reviewed. Comet Halley’s transverse nongravitational parameter is positive and nearly constant
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Dynamics of the charged particles released from a Sun-grazing comet in the solar corona
Earth and Planetary Physics, 2021 The sun-grazing comet C/2011 W3 (Lovejoy) showed a distorted, unconventional tail morphology near its perihelion (1.2Rs). Based on the “Solar Corona and Inner Heliosphere” modeling result of the magnetic field and plasma dynamics in the solar corona, we ...
ChuanPeng Hou +4 more
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Impact Rates in the Outer Solar System
The Planetary Science Journal, 2023 Previous studies of cometary impacts in the outer solar system used the spatial distribution of ecliptic comets (ECs) from dynamical models that assumed ECs began on low-inclination orbits (≲5°) in the Kuiper Belt.
David Nesvorný +4 more
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Symplectic map description of Halley's comet dynamics [PDF]
Physics Letters A, 2015 The main features of 1P/Halley chaotic dynamics can be described by a two dimensional symplectic map. Using Mel'nikov integral we semi-analytically determine such a map for 1P/Halley taking into account gravitational interactions from the Sun and the eight planets.
Rollin, Guillaume +2 more
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Journal of Animal Science and Biotechnology, 2022 Background The analysis of chromatin integrity has become an important determinant of sperm quality. In frozen-thawed bovine sperm, neither the sequence of post-thaw injury events nor the dynamics of different types of sperm DNA breaks are well ...
Jordi Ribas-Maynou +6 more
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