Results 111 to 120 of about 185,965 (314)

The development of the red giant branch. II - Astrophysical properties

The Astrophysical Journal, 1990
Evolutionary sequences developed in another paper are used here to investigate the properties of the red giant branch (RGB) phase transition. Results are found for compositions in the range Y(MS) between 0.20 and 0.30 and Z between 0.004 and 0.04. The transition mass M(HeF) increases as either Y(MS) decreases or Z increases.
Allen V. Sweigart, Laura Greggio, Alvio Renzini   +2 more
openaire   +2 more sources

Mixed‐Phase TiO2 Nanotubes Enhance Ru Nanoparticle Activity for Hydrogen Evolution in pH‐Neutral Electrolytes

Advanced Energy and Sustainability Research, EarlyView.
Efficient water electrolysis in NaBr electrolyte is achieved using TiO2 nanotube supports decorated with Ru nanoparticles. A cooperative “job‐sharing” effect between the TiO2 proton‐storage support that provides protons to the Ru catalyst enhances hydrogen evolution, minimizes Ru demand and polarization losses, and delivers stable performance ...
Matan Sananis, Elena Davydova, Anna Breytus, Avner Rothschild   +3 more
wiley   +1 more source

Testing the Breakdown of the Asteroseismic Scaling Relations in Luminous Red Giants

The Astrophysical Journal
Nearly all cool, evolved stars are solar-like oscillators, and fundamental stellar properties can be inferred from these oscillations with asteroseismology.
Amanda L. Ash, Marc H. Pinsonneault, Mathieu Vrard, Joel C. Zinn   +3 more
doaj   +1 more source

Rapidly rotating red giants

EPJ Web of Conferences, 2017
Stellar oscillations give seismic information on the internal properties of stars. Red giants are targets of interest since they present mixed modes, wich behave as pressure modes in the convective envelope and as gravity modes in the radiative core ...
Gehan Charlotte, Mosser Benoît, Michel Eric   +2 more
doaj   +1 more source

Synapsids and sensitivity: Broad survey of tetrapod trigeminal canal morphology supports an evolutionary trend of increasing facial tactile specialization in the mammal lineage

The Anatomical Record, EarlyView.
Abstract The trigeminus nerve (cranial nerve V) is a large and significant conduit of sensory information from the face to the brain, with its three branches extending over the head to innervate a wide variety of integumentary sensory receptors, primarily tactile.
Juri A. Miyamae, Julien Benoit, Irina Ruf, Zoleka Sibiya, Bhart‐Anjan S. Bhullar   +4 more
wiley   +1 more source

Non-radial oscillations in M-giant semi-regular variables: Stellar models and Kepler observations

, 2014
The success of asteroseismology relies heavily on our ability to identify the frequency patterns of stellar oscillation modes. For stars like the Sun this is relatively easy because the mode frequencies follow a regular pattern described by a well ...
Bedding, T. R., Bellamy, B., Christensen-Dalsgaard, J., Compton, D., Garcia, R. A., Kiss, L. L., Kjeldsen, H., Mathur, S., Stello, D.   +8 more
core   +1 more source

Washington Photometry of the Red Giant Branch in NGC 6388

The Astronomical Journal, 2007
We present Washington photometry of the giant branches of the relatively metal-rich globular cluster NGC 6388 and compare it with 47 Tuc. By examining the spatial distribution of stellar colors across the red giant branch and using spectroscopic data on several bright giants, we found that NGC 6388's center is affected by differential reddening of at ...
Naydene Hays, Naydene Hays, George Wallerstein, Ricardo Covarrubias, Ricardo Covarrubias, Joanne Hughes   +5 more
openaire   +2 more sources

From armadillos to sloths: Patterns and variations in xenarthran coronary anatomy

The Anatomical Record, EarlyView.
Abstract Species of the superorder Xenarthra play a vital ecological role in the Neotropics. Despite their evolutionary significance, anatomical studies on their coronary circulation remain scarce. This study investigated the coronary anatomy of 82 hearts from nine Xenarthra species across the Dasypodidae, Myrmecophagidae, and Bradypodidae.
Wilson Viotto‐Souza, André Luiz Quagliatto Santos, Marcelo Abidu‐Figueiredo, Thaís Aparecida Silva, Rodrigo Ananias Barreiros Silva, Paulo de Souza‐Junior   +5 more
wiley   +1 more source

Discovery of a Metal-poor Red Giant Star with the Highest Ultralithium Enhancement

The Astrophysical Journal
We present the discovery of 2MASS J05241392−0336543 (hereafter J0524−0336), a very metal-poor ([Fe/H] = −2.43 ± 0.16), highly r -process-enhanced ([Eu/Fe] = +1.34 ± 0.10) Milky Way halo field red giant star, with an ultrahigh Li abundance of A (Li, 3D ...
Jeremy Kowkabany, Rana Ezzeddine, Corinne Charbonnel, Ian U. Roederer, Ella Xi Wang, Yangyang Li, Zoe Hackshaw, Timothy C. Beers, Anna Frebel, Terese T. Hansen, Erika Holmbeck, Vinicius M. Placco, Charli M. Sakari   +12 more
doaj   +1 more source

Late‐Onset Spondylarthritis Presenting as Glucocorticoid‐Resistant Polymyalgia Rheumatica: A hitherto underappreciated entity where TNF or IL‐17 Blockade may have a Therapeutic Role

Arthritis &Rheumatology, Accepted Article.
Background Polymyalgia rheumatica (PMR) is an age‐related inflammatory disease with shoulder‐hip girdle involvement. Magnetic resonance imaging (MRI) reveals extracapsular/entheseal soft tissue involvements in both PMR and spondyloarthritis (SpA) with sacroiliac joint and peri‐entheseal spinal bone marrow oedema (BMO) being characteristic of SpA ...
Kerem Abacar, Gabriele De Marco, Jake Weddell, Katya Meridor, Tom Macleod, Andrew Scarsbrook, Kulveer Mankia, Edward Vital, Andrew Barr, Colin Pease, Helena Marzo‐Ortega, Sarah L. Mackie, Dennis McGonagle   +12 more
wiley   +1 more source