Results 31 to 40 of about 41,496 (286)
Rapid BAL Variability: Re-Emerging Absorption
Frontiers in Astronomy and Space Sciences, 2017 We study BAL variations of SDSS J141955.28+522741.4 utilizing 32 epochs of spectroscopic observations from SDSS. We identify three individual BAL troughs for C iv and one BAL trough for Si iv.
Damla Erakuman +2 more
doaj +1 more source
A simplified approach to kinematics of stars in solar neighbourhood [PDF]
Serbian Astronomical Journal, 2015 For a number of stars from the Solar neighbourhood the eccentricities of their galactocentric orbits are calculated by using a simplified procedure given by Ninković (2011).
Stojanović M.
doaj +1 more source
Advanced Engineering Materials, EarlyView.Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov +4 more
wiley +1 more source
Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced Engineering Materials, EarlyView.An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara +8 more
wiley +1 more source
Modeling the kinematics and dynamics of compliant contact [PDF]
2003 IEEE International Conference on Robotics and Automation (Cat. No.03CH37422), 2004 In this paper, we discuss the modeling of the kinematics and dynamics of compliant contact between bodies moving in Euclidean space. First, we derive the kinematic equations describing the motion of the contact point when two rigid bodies are rolling on each other.
Vincent Duindam, Stefano Stramigioli
openaire +4 more sources
Gas Motion Mapping for Three Seyfert Galaxies
Open Astronomy, 2011 We report the preliminary results of a kinematical study of three Seyfert galaxies selected from a sample of nearby active galactic nuclei observed using 3D spectroscopy.
Smirnova A. +3 more
doaj +1 more source
Reconsideration of mass-distribution models [PDF]
Serbian Astronomical Journal, 2014 The mass-distribution model proposed by Kuzmin and Veltmann (1973) is revisited. It is subdivided into two models which have a common case. Only one of them is subject of the present study.
Ninković S.
doaj +1 more source
A Miocene onset of the modern extensional regime in the Isparta Angle: constraints from the Yalvaç Basin (southwest Turkey) [PDF]
, 2016 The pre-Neogene Tauride fold-and-thrust belt, comprising Cretaceous ophiolites and metamorphic rocks and non-metamorphic carbonate thrust slices in southern Turkey, is flanked and overlain by Neogene sedimentary basins. These include poorly studied intra-
Vissers, Reinoud L. M. +9 more
core +1 more source
Advanced Engineering Materials, EarlyView.This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca +9 more
wiley +1 more source
A Complex Stellar Line-of-Sight Velocity Distribution in the Lenticular Galaxy NGC 524
Open Astronomy, 2011 We present a detailed study of the stellar and gaseous kinematics in the luminous early-type galaxy NGC 524, derived from the long-slit spectroscopic observations obtained with the Russian 6 m telescope and the IFU data from the SAURON survey.
Katkov I. +4 more
doaj +1 more source