Results 51 to 60 of about 17,065,072 (359)

The self-similarity theory of high pressure torsion

open access: yesBeilstein Journal of Nanotechnology, 2016
By analyzing the problem of high pressure torsion (HPT) in the rigid plastic formulation, we show that the power hardening law of plastically deformed materials leads to self-similarity of HPT, admitting a simple mathematical description of the process ...
Yan Beygelzimer   +3 more
doaj   +1 more source

Low-Mass Stars. II. The Core Mass--Luminosity Relations for Low-Mass Stars

open access: yesThe Astrophysical Journal, 1988
Etude de la relation masse-luminosite dans la litterature pour des etoiles de masse intermediaire, et extension a des etoiles de faible masse (0,8 M ○. -3 M ○. )
Arnold I. Boothroyd, I.-Juliana Sackmann
openaire   +1 more source

The empirical mass-luminosity relation for low mass stars [PDF]

open access: yesAstrophysics and Space Science, 2008
This work is devoted to improving empirical mass-luminosity relations and mass-metallicity-luminosity relation for low mass stars. For these stars, observational data in the mass-luminosity plane or the mass-metallicity-luminosity space subject to non-negligible errors in all coordinates with different dimensions.
Xia, Fang, Ren, Shulin, Fu, Yanning
openaire   +2 more sources

Exoplanets around Low-mass Stars Unveiled by K2 [PDF]

open access: yes, 2017
We present the detection and follow-up observations of planetary candidates around low-mass stars observed by the K2 mission. Based on light-curve analysis, adaptive-optics imaging, and optical spectroscopy at low and high resolution (including radial ...
T. Hirano   +40 more
semanticscholar   +1 more source

First results on low-mass dark matter from the CRESST-III experiment [PDF]

open access: yesJournal of Physics: Conference Series, 2016
The CRESST experiment (Cryogenic Rare Even Search with Superconducting Thermometers), located at Laboratori Nazionali del Gran Sasso in Italy, searches for dark matter particles via their elastic scattering off nuclei in a target material.
F. Petricca   +44 more
semanticscholar   +1 more source

Study of Mg–Al–Ca magnesium alloy ameliorated with designed Al8Mn4Gd phase

open access: yesJournal of Magnesium and Alloys, 2020
To investigate the effect of Al8Mn4Gd phase on microstructural and mechanical properties of Mg–Al–Ca magnesium alloy, two Mg–2.5Al2Ca and Mg–2.5Al2Ca-0.1Al8Mn4Gd alloys were designed and compared in this work.
Chaosheng Ma   +3 more
doaj   +1 more source

MASS-RADIUS RELATIONSHIPS FOR VERY LOW MASS GASEOUS PLANETS [PDF]

open access: yesThe Astrophysical Journal, 2013
Recently, the Kepler spacecraft has detected a sizable aggregate of objects, characterized by giant-planet-like radii and modest levels of stellar irradiation. With the exception of a handful of objects, the physical nature, and specifically the average densities, of these bodies remain unknown. Here, we propose that the detected giant planet radii may
Batygin, Konstantin, Stevenson, David J.
openaire   +3 more sources

Osteoporosis or Low Bone Mass in Older Adults: United States, 2017-2018.

open access: yesNCHS data brief, 2021
Osteoporosis is the most common bone disease and is characterized by weakening of bone tissue, bone structure, and strength, and may lead to increased risk of fractures (1). Low bone mass increases the risk of developing osteoporosis (2).
Neda Sarafrazi   +2 more
semanticscholar   +1 more source

Mass transfer during low-mass X-ray transient decays [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2007
11 pages, 15 figures, 3 tables.
Powell, Craig R.   +2 more
openaire   +2 more sources

The New Plastic Flow Machining Process for Producing Thin Sheets

open access: yesAdvances in Materials Science and Engineering, 2018
A new severe plastic deformation (SPD) process called plastic flow machining (PFM) was recently proposed to produce thin sheets with gradient structures.
Viet Q. Vu   +3 more
doaj   +1 more source

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