The GRAVITY Young Stellar Object survey IV. The CO overtone emission in 51 Oph at sub-au scales [PDF]
, 2020 51 Oph is a Herbig Ae/Be star that exhibits strong near-infrared CO ro-vibrational emission at 2.3 micron, most likely originating in the innermost regions of a circumstellar disc. We aim to obtain the physical and geometrical properties of the system by spatially resolving the circumstellar environment of the inner gaseous disc.
arxiv +1 more source
Risk of temporomandibular joint effusion related to magnetic resonance imaging signs of disc displacement [PDF]
, 2009 Background: It has been suggested that TMJ effusion may represent an inflammatory response to a dysfunctional disc-condyle relationship. The purpose of the present study was to evaluate whether the status of the disc in the temporomandibular joint, as ...
Bosco, Mario +3 more
core
Dust Spreading in Debris Discs: Do Small Grains Cling on to Their Birth Environment? [PDF]
, 2019 Debris discs are dusty belts of planetesimals around main-sequence stars, similar to the asteroid and Kuiper belts in our solar system. The planetesimals cannot be observed directly, yet they produce detectable dust in mutual collisions. Observing the dust, we can try to infer properties of invisible planetesimals.
arxiv +1 more source
Rotating relativistic thin disks as sources of charged and magnetized Kerr-NUT spacetimes [PDF]
Int. J. Mod. Phys. D, Vol. 18, No. 9 (2009), pags. 1461-1481, 2008 A family of models of counterrotating and rotating relativistic thin discs of infinite extension based on a charged and magnetized Kerr-NUT metric are constructed using the well-known "displace, cut and reflect" method extended to solutions of vacuum Einstein-Maxwell equations.
arxiv +1 more source
Hydroelastic effects during the fast lifting of a disc from a water surface [PDF]
Journal of Fluid Mechanics. Vol. 869, pp. 726-751, June 2019, 2018 Here we report the results of an experimental study where we measure the hydrodynamic force acting on a plate which is lifted from a water surface, suddently starting to move upwards with an acceleration much larger than gravity. Our work focuses on the early stage of the plate motion, when the hydrodynamic suction forces due to the liquid inertia are ...
arxiv +1 more source
Dynamic Behaviour of a Two-Stage Cycloidal Speed Reducer of a New Design Concept [PDF]
, 2018 Traditional cycloidal speed reducers (with two cycloid discs per one stage, mutually turned by an angle of 180°) are well known for their remarkable dynamic stability.
Miloš Matejić +2 more
core +2 more sources
Formation of rings in galactic discs by infalling small companions [PDF]
, 1996 We use N-body simulations to study the formation of rings in a disc galaxy by the impact of a small spherical companion. Both barred and nonbarred target discs are considered. We discuss the effect of the properties of the target disc (distribution of mass in the disc, velocity dispersion, etc.) as well as of the mass and orbit of the companion on the ...
arxiv +1 more source
FasL Expression in Articular Discs of Human Temporomandibular Joint and Association with Osteoarthrosis [PDF]
, 2013 Background Apoptosis is a programme of cell death which does not induce an inflammatory response. Recent previous research has suggested a correlation between temporomandibular internal derangement and apoptosis.
Alanis, Luciana Reis Azevedo +9 more
core +2 more sources
The high frequency flexural ultrasonic transducer for transmitting and receiving ultrasound in air [PDF]
, 2020 Flexural ultrasonic transducers are robust and low cost sensors that are typically used in industry for distance ranging, proximity sensing and flow measurement.
Dixon, Steve M. +2 more
core +3 more sources
Galactic seismology: the evolving "phase spiral" after the Sagittarius dwarf impact [PDF]
, 2020 In 2018, the ESA \Gaia\ satellite discovered a remarkable spiral pattern ("phase spiral") in the $z-V_z$ phase plane throughout the solar neighbourhood, where $z$ and $V_z$ are the displacement and velocity of a star perpendicular to the Galactic disc.
arxiv +1 more source