Results 91 to 100 of about 1,345 (236)

Rotating Quark Stars in General Relativity

Universe, 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, Antonios Tsokaros, Luciano Rezzolla, Renxin Xu, Kōji Uryū   +4 more
doaj   +1 more source

Effect of hypoxia on muscle activation at equivalent absolute and relative intensity during incremental and constant load exercise to task failure

Experimental Physiology, Volume 111, Issue 4, Page 1933-1947, 1 April 2026.
Abstract We examined the impact of moderate hypoxia (HYPO) on muscle activation during incremental exercise matched for both absolute and equivalent relative intensity. Fifteen active subjects (10 males, 5 females) completed two ramp incremental test and two step tests in normoxia (NORM; FiO2${F_{{\mathrm{i}}{{\mathrm{O}}_2}}}$ = 0.209) and HYPO (FiO2${
Dania Ibrahim, Youmna Elsayed Hassanein, Nathan E. Townsend   +2 more
wiley   +1 more source

Cooling of Neutron Stars

EPJ Web of Conferences, 2010
We introduce the theoretical basis for modeling the cooling evolution of compact stars starting from Boltzmann equations in curved space-time. We open a discussion on observational verification of different neutron star models by consistent statistics ...
Grigorian H.
doaj   +1 more source

Impact of the Nuclear Equation of State on the Stability of Hybrid Neutron Stars

Universe, 2019
We construct a set of equations of state (EoS) of dense and hot matter with a 1st order phase transition from a hadronic system to a deconfined quark matter state. In this two-phase approach, hadrons are described using the relativistic mean field theory
Mateusz Cierniak, Tobias Fischer, Niels-Uwe Bastian, Thomas Klähn, Marc Salinas   +4 more
doaj   +1 more source

Females exhibit greater cardiac volume reductions with expiratory muscle loading during submaximal exercise compared to males

The Journal of Physiology, Volume 604, Issue 7, Page 3175-3200, 1 April 2026.
Abstract figure legend Intrathoracic pressure (ITP) manipulation during submaximal exercise reveals load‐ and sex‐specific cardiac volume responses. Inspiratory loading increased oesophageal pressure swings and the work of breathing (Wb) but did not alter stroke volume (SV) or ventricular volumes in males or females.
Sarah A. Angus, Michelle Ottlik, Connor J. Doherty, Benjamin P. Thompson, Jason S. Au, Eric J. Stöhr, Paolo B. Dominelli   +6 more
wiley   +1 more source

QCD Equations of State in Hadron–Quark Continuity

Universe, 2018
The properties of dense matter in quantum chromodynamics (QCD) are delineated through equations of state constrained by the neutron star observations. The two solar mass constraint, the radius constraint of ≃11–13 km, and the causality constraint on the ...
Toru Kojo
doaj   +1 more source

Hybrid Quark Stars with Quark-Quark Phase Transitions

13 pages, 7 figures; updated version with possible signatures of gravitational wave ...
Yang, Zongcan, Zeng, Tianxiong, Yan, Yan, Yuan, Wen-Li, Zhang, Chen, Zhou, Enping   +5 more
openaire   +2 more sources

Reweighting the quark Sivers function with STAR jet data [PDF]

, 2022
Carlo Flore, M. Boglione, U. D’Alesio, J. O. Gonzalez-Hernandez, F. Murgia, A. Prokudin   +5 more
openalex   +1 more source

Strongly interacting quark matter in massive quark stars

Classical and Quantum Gravity
Abstract This paper investigates the properties of strongly coupled matter at high baryon densities (ρ B) in quark stars (QSs). The QS model is based on the density-dependent quark mass (DDQM) framework, modified DDQM (MDDQM) by enhancing the single-gluon interaction to generate higher repulsive pressure.
Adamu Issifu, Franciele M da Silva, Luis C N Santos, Débora P Menezes, Tobias Frederico   +4 more
openaire   +2 more sources

Effects of quark-matter symmetry energy on hadron-quark coexistence in neutron-star matter [PDF]

, 2018
Xuhao Wu, Akira Ohnishi, Hong Shen
openalex   +1 more source