Results 81 to 90 of about 9,183 (293)

Stellar Evolution with Enriched Surface Convection Zones. I. General Effects of Planet Consumption [PDF]

The Astrophysical Journal, 2005
29 pages, 10 figures, accepted for publication by the Astrophysical Journal; one reference ...
Cody, Ann Marie, Sasselov, Dimitar
openaire   +2 more sources

A Biomarker‐Driven Ovary–Endometrium Organ‐on‐a‐Chip Mimicking 3D Multicellular Complexity and Menstrual Cyclicity for Predicting Reproductive Toxicity

Advanced Science, EarlyView.
We present a dual‐organ, biomarker‐integrated ovaryendometrium organ‐on‐a‐chip that recapitulates 3D tissue complexity, menstrual cycle dynamics, and hormonal crosstalk. This platform enables real‐time, cell‐typespecific fluorescent readouts of reproductive toxicity using ANGPTL4 and SERPINB2 as early‐response reporters.
Soo‐Rim Kim, Eun‐kyung Min, Choon‐Mi Lee, Chan Hum Park, Byung‐Chul Oh, YunJae Jung, In‐Sun Hong   +6 more
wiley   +1 more source

Constraints on Magnetic Braking from the G8 Dwarf Stars 61 UMa and τ Cet

The Astrophysical Journal Letters, 2023
During the first half of their main-sequence lifetimes, stars rapidly lose angular momentum to their magnetized winds, a process known as magnetic braking.
Travis S. Metcalfe, Klaus G. Strassmeier, Ilya V. Ilyin, Jennifer L. van Saders, Thomas R. Ayres, Adam J. Finley, Oleg Kochukhov, Pascal Petit, Victor See, Keivan G. Stassun, Sandra V. Jeffers, Stephen C. Marsden, Julien Morin, Aline A. Vidotto   +13 more
doaj   +1 more source

The role of turbulent pressure as a coherent pulsational driving mechanism: the case of the delta Scuti star HD 187547 [PDF]

, 2014
HD 187547 was the first candidate that led to the suggestion that solar-like oscillations are present in delta Scuti stars. Longer observations, however, show that the modes interpreted as solar-like oscillations have either very long mode lifetimes ...
Antoci, V., Arentoft, T., Cunha, M., Handler, G., Houdek, G., Kjeldsen, H., Lueftinger, T., Murphy, S., Trampedach, R.   +8 more
core   +2 more sources

Highly‐Conductive and Micro‐Structured Transparent Glass Substrates for Efficient and Scalable Photoelectrochemical Applications

Advanced Science, EarlyView.
This work paves the way for practical photoelectrochemical water splitting devices by addressing key upscaling challenges related to substrate conductivity, absorber inhomogeneity, and mass transfer limitations. Integrated improvements in substrate engineering, material processing, device architecture, and operational conditions allow the development ...
Telmo da Silva Lopes, Jeffrey Capitão, Amin Khan, Leonardo Rodrigues, Dzmitry Ivanou, Tânia Lopes, Paula Dias, Adélio Mendes   +7 more
wiley   +1 more source

A Short Intense Dynamo at the Onset of Crystallization in White Dwarfs

The Astrophysical Journal Letters
The origin of large magnetic fields (≳10 ^6 G) in isolated white dwarfs is not clear. One possible explanation is that crystallization of the star’s core drives compositional convection, which when combined with the star’s rotation, can drive a dynamo ...
J. R. Fuentes, Matias Castro-Tapia, Andrew Cumming   +2 more
doaj   +1 more source

The treatment of mixing in core helium burning models -- II. Constraints from cluster star counts

, 2015
The treatment of convective boundaries during core helium burning is a fundamental problem in stellar evolution calculations. In Paper~I we showed that new asteroseismic observations of these stars imply they have either very large convective cores or ...
Campbell, Simon W., Constantino, Thomas, Lattanzio, John C., van Duijneveldt, Adam   +3 more
core   +1 more source

Supernova Ia: a Converging Delayed Detonation Wave [PDF]

, 2001
A model of a carbon-oxygen (C--O) presupernova core with an initial mass 1.33 M_\odot, an initial carbon mass fraction 0.27, and with an average mass growth-rate 5 x 10^{-7} M_\odot/yr due to accretion in a binary system was evolved from initial central ...
A. M. Khokhlov, A. M. Lisewski, B. Paczyński, D. G. Yakovlev, E. E. Salpeter, E. E. Salpeter, G. S. Bisnovatyi-Kogan, I. Hachisu, I. Iben, J. C. Niemeyer, K. Nomoto, L. D. Landau, L. N. Ivanova, L. N. Ivanova, L. N. Ivanova, L. N. Ivanova, L. N. Ivanova, L. R. Yungel’son, M. Haft, N. V. Dunina-Barkovskaya, N. V. Dunina-Barkovskaya, N. V. Zmitrenko, P. J. Schinder, S. E. Woosley, S. E. Woosley, S. I. Blinnikov, S. I. Blinnikov, S. I. Blinnikov, S. I. Blinnikov, S. I. Blinnikov, S. I. Blinnikov, S. I. Blinnikov, V. S. Imshennik, V. S. Imshennik, V. S. Imshennik, W. D. Arnett, W. Fowler   +36 more
core   +3 more sources

A NEW STELLAR MIXING PROCESS OPERATING BELOW SHELL CONVECTION ZONES FOLLOWING OFF-CENTER IGNITION [PDF]

The Astrophysical Journal, 2011
During most stages of stellar evolution the nuclear burning of lighter to heavier elements results in a radial composition profile which is stabilizing against buoyant acceleration, with light material residing above heavier material. However, under some circumstances, such as off-center ignition, the composition profile resulting from nuclear burning ...
Mocak, Miroslav, Meakin, C.A., Muller, Ewald, Siess, Lionel   +3 more
openaire   +4 more sources

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

Advanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas, Ankan Dutta, Shuvendu Das, Abu Musa Abdullah, Wanqing Zhang, Fatema Tuz Zohra, Huanyu Cheng   +6 more
wiley   +1 more source