Results 111 to 120 of about 622,543 (345)

Ionic Control of Microstructure and Lubrication in Charged, Physically Cross‐Linked Hydrogels

open access: yesAdvanced Functional Materials, EarlyView.
Here, charged, physically cross‐linked poly(methacrylamide‐co‐methacrylic acid) hydrogels stabilized by a short‐range attractive, long‐range repulsive potential is investigated. This work uncovers how salt addition alters not only swelling, but also the microstructure and dynamics, near‐surface stiffness and charge, and ultimately, its lubricity. Salts
Alexander Deptula   +1 more
wiley   +1 more source

Progressive Collapse Analysis of SRC Frame-RC Core Tube Hybrid Structure

open access: yesApplied Sciences, 2018
Steel reinforced concrete (SRC) frame-reinforced concrete (RC) core tube hybrid structures are widely used in high-rise buildings. Focusing on the progressive collapse behavior of this structural system, this paper presents an experiment and analysis on ...
Xingxing Chen   +4 more
doaj   +1 more source

Nucleosynthesis Calculations from Core-Collapse Supernovae [PDF]

open access: yes, 2008
We review some of the uncertainties in calculating nucleosynthetic yields, focusing on the explosion mechanism. Current yield calculations tend to either use a piston, energy injection, or enhancement of neutrino opacities to drive an explosion.
Bennett, Michael   +10 more
core   +2 more sources

Global Nonradial Instabilities of Dynamically Collapsing Gas Spheres

open access: yes, 2000
Self-similar solutions provide good descriptions for the gravitational collapse of spherical clouds or stars when the gas obeys a polytropic equation of state, $p=K\rho^\gamma$ (with $\gamma\le 4/3$).
Boily C. M.   +12 more
core   +2 more sources

Electroactive Metal–Organic Frameworks for Electrocatalysis

open access: yesAdvanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska   +7 more
wiley   +1 more source

Direct Evidence of Topological Dirac Fermions in a Low Carrier Density Correlated 5d Oxide

open access: yesAdvanced Functional Materials, EarlyView.
The 5d oxide BiRe2O6 is discovered as a low‐carrier‐density topological semimetal hosting symmetry‐protected Dirac fermions stabilized by nonsymmorphic symmetries. Angle‐resolved photoemission spectroscopy, quantum oscillations, and magnetotransport measurements reveal gapless Dirac cones, quasi‐2D Fermi surfaces, high carrier mobility, and a field ...
Premakumar Yanda   +11 more
wiley   +1 more source

An Extended Closure Relation by LightGBM for Neutrino Radiation Transport in Core-collapse Supernovae

open access: yesThe Astrophysical Journal
We developed a machine learning model using LightGBM, one of the most popular gradient-boosting decision tree methods these days, to predict the Eddington tensor, or the second-order angular moment, for neutrino radiation transport in core-collapse ...
Shota Takahashi   +2 more
doaj   +1 more source

Diffuse neutrino background from past core collapse supernovae. [PDF]

open access: yesProc Jpn Acad Ser B Phys Biol Sci, 2023
Ando S, Ekanger N, Horiuchi S, Koshio Y.
europepmc   +1 more source

Explaining the most energetic supernovae with an inefficient jet-feedback mechanism

open access: yes, 2016
We suggest that the energetic radiation from core-collapse super-energetic supernovae (SESNe) is due to a long lasting accretion process onto the newly born neutron star (NS), resulting from an inefficient operation of the jet-feedback mechanism.
Gilkis, Avishai   +2 more
core   +1 more source

Nuclear input for core-collapse models

open access: yesNuclear Physics A, 2006
37 pages, 11 figures, for special issue of Nucl.
Martinez-Pinedo, Gabriel   +2 more
openaire   +3 more sources

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