Results 91 to 100 of about 648,957 (221)

Quark neutron layer stars

open access: yesThe Astrophysical Journal, 1993
Typical nuclear equations of state and a quark bag model, surprisingly, allow compact stars with alternate layers of neutrons and quarks. One can determine on the basis of the Gibbs free energy which phase, nuclear or quark, is energetically favorable.
openaire   +2 more sources

Post‐Exercise R‐1,3‐Butanediol did not Improve Markers of Fatigue or Recovery During a Multi‐Stage Mountain Bike Race

open access: yesEuropean Journal of Sport Science, Volume 26, Issue 11, November 2026.
ABSTRACT Evidence suggests that exogenous ketosis (EK) induced by ketone monoester (KME) supports recovery and attenuates physiological stress during endurance exercise. However, the potential benefits of the ketone precursor R‐1,3‐butanediol (BDO) during real‐world multi‐stage cycling remain unknown.
Louise Engelbrecht   +3 more
wiley   +1 more source

Measurement of the top quark pair production cross section in pp collisions at √s=7  TeV in dilepton final states with ATLAS [PDF]

open access: yes, 2011
A measurement of the production cross section of top quark pairs (t<span style="text-decoration: overline">t</span>) in proton–proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the Large Hadron Collider
Alessandria, F   +999 more
core   +5 more sources

Polynomial Preconditioning for Indefinite Matrices

open access: yesNumerical Linear Algebra with Applications, Volume 33, Issue 5, October 2026.
ABSTRACT Polynomial preconditioning is an important tool in solving large linear systems and eigenvalue problems. A polynomial from GMRES can be used to precondition restarted GMRES and restarted Arnoldi. Here we give methods for indefinite matrices that make polynomial preconditioning more generally applicable. The new techniques include balancing the
Hayden Henson, Ronald B. Morgan
wiley   +1 more source

Different demographic drivers of recovery in two adjacent populations of a long‐lived bird of prey

open access: yesOikos, Volume 2026, Issue 10, October 2026.
Understanding the demographic mechanisms underlying population decline or recovery is critical for conservation and management, yet similar population trends may arise from very different underlying processes. Comparing populations of vulnerable species groups like long‐lived raptors in different environments can reveal how species respond to change ...
Carina Nebel   +4 more
wiley   +1 more source

RIGIDLY ROTATING STRANGE QUARK STARS

open access: yesInternational Journal of Modern Physics D, 2005
In this article, we study rotating strange quark stars in the context of general relativity. For this purpose we consider perfect fluid model composed of strange quark matter with electromagnetic field in the Gödel Universe which has rigid rotation. We solve Einstein's field equations by using equation of state for strange quark matter.
Yilmaz, I, Baysal, HÜSNÜ
openaire   +3 more sources

Two–fluid CFL strange quark stars with scalar dark matter: Critical mass and mass–gap implications

open access: yesNuclear Physics B
We investigate the structure of strange quark stars (SQSs) in the color–flavor–locked (CFL) phase in the presence of scalar bosonic dark matter within a two–fluid formalism.
J. Sedaghat   +3 more
doaj   +1 more source

Resting Metabolic Rate Rises in Pregnancy, but Energy Intake and Active Expenditure Remain Stable: A Pilot Study

open access: yesAustralian and New Zealand Journal of Obstetrics and Gynaecology, Volume 66, Issue 5, October 2026.
ABSTRACT Background Adequate nutrition during pregnancy is well established; however, how pregnancy affects energy metabolism, particularly the relationship between energy intake, expenditure and maternal mass, remains poorly understood. Current dietary recommendations advise increasing energy intake across pregnancy, but these are based on theoretical
Georgia S. Clarke   +3 more
wiley   +1 more source

Quark stars in $$D_3$$ D 3 – $$D_7$$ D 7 holographic model

open access: yesEuropean Physical Journal C: Particles and Fields
This work investigates static and dynamical quark star properties within a $$D_3{-}D_7$$ D 3 - D 7 holographic model. We solve the Tolman–Oppenheimer–Volkoff equations for the quark matter equation of state obtained from the brane configuration.
M. Aleixo   +3 more
doaj   +1 more source

Rotating Quark Stars in General Relativity

open access: yesUniverse, 2018
We have built quasi-equilibrium models for uniformly rotating quark stars in general relativity. The conformal flatness approximation is employed and the Compact Object CALculator (cocal) code is extended to treat rotating stars with surface density ...
Enping Zhou   +4 more
doaj   +1 more source

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