Results 81 to 90 of about 41,644 (263)

Quark Deconfinement in Rotating Neutron Stars [PDF]

Universe, 2017
In this paper, we use a three flavor non-local Nambu–Jona-Lasinio (NJL) model, an improved effective model of Quantum Chromodynamics (QCD) at low energies, to investigate the existence of deconfined quarks in the cores of neutron stars. Particular emphasis is put on the possible existence of quark matter in the cores of rotating neutron stars (pulsars).
Richard Mellinger, Fridolin Weber, William Spinella, Gustavo Contrera, Milva Orsaria   +4 more
openaire   +7 more sources

Impact of exercise training on tumour‐infiltrating T cells in human prostate cancer: A secondary analysis of a randomized controlled trial (PRO‐TEST)

Experimental Physiology, EarlyView.
Abstract Exercise training reduces tumour growth by increasing tumour‐infiltrating T‐cell density in preclinical models. However, it remains unknown whether exercise training can modify intratumoural T cells in humans.The aim of this study was to compare the effects of an exercise training intervention versus control on human prostate intratumoural T ...
Simon Nørskov Thomsen, Emil Wriedt, Marianne Gardar Stærk, Sissal Sigmundsdottir Djurhuus, Birgitte Grønkær Toft, Sabrina Wielsøe, Andreas Røder, Thomas Hasselager, Peter Busch Østergren, Henrik Jakobsen, Klaus Brasso, Jesper Frank Christensen, Louise Lang Lehrskov, Casper Simonsen   +13 more
wiley   +1 more source

New mass limit of a strange star admitting a colour flavor locked equation of state

European Physical Journal C: Particles and Fields, 2023
A class of strange stars is analysed in the present article in hydrostatic equilibrium, whose state is defined by a CFL phase equation of state. We have compared our results with those obtained from the MIT equation of state for strange quark matter ...
K. B. Goswami, A. Saha, P. K. Chattopadhyay, S. Karmakar   +3 more
doaj   +1 more source

Quark formation and phenomenology in binary neutron-star mergers using V-QCD

SciPost Physics, 2022
Using full 3+1 dimensional general-relativistic hydrodynamic simulations of equal- and unequal-mass neutron-star binaries with properties that are consistent with those inferred from the inspiral of GW170817, we perform a detailed study of the quark ...
Samuel Tootle, Christian Ecker, Konrad Topolski, Tuna Demircik, Matti Järvinen, Luciano Rezzolla
doaj   +1 more source

Cooling of a New Born Compact Star with QCD Phase Transition

, 2004
We study the cooling behaviour of an isolated strange quark star, using an equation of state derived from perturbative QCD up to second order in strong coupling constant, and we compare it with that of a neutron star.
A. C. Phillips, Albert G. Petschek, E. V. Shuryak, F. Weber, K. -W. Wong, L. P. Csernai, M. -C. Chu, N. K. Glendenning, P. Haensel, Z. Fodor   +9 more
core   +1 more source

A compact star rotating at 1122 Hz and the r-mode instability [PDF]

, 2008
We show that r-mode instabilities severely constraint the composition of a compact star rotating at a submillisecond period. In particular, the only viable astrophysical scenario for such an object, present inside the Low Mass X-ray Binary associated ...
Alessandro Drago, Alford, Andersson, Andersson, Bildsten, Blaschke, Blaschke, Brown, Friedman, Giuseppe Pagliara, Irene Parenti, Kaaret, Lavagetto, Levin, Page, Rezzolla, Wagoner   +16 more
core   +2 more sources

Combined effects of normobaric hypoxia and cold on respiratory system responses to high‐intensity exercise

Experimental Physiology, EarlyView.
Abstract Cold temperatures (<−15°C) increase exercise‐induced bronchoconstriction (EIB), while hypoxic‐induced hyperventilation exacerbates respiratory muscle fatigue for a given exercising task. This study aimed to determine the individual and combined effects of cold and normobaric hypoxia on the respiratory system responses to high‐intensity ...
Alexa Callovini, Alessandro Fornasiero, Aldo Savoldelli, Gianluigi Dorelli, Marco Decet, Lorenzo Bortolan, Barbara Pellegrini, Federico Schena   +7 more
wiley   +1 more source

Commuting by bicycle (vs. by car) is associated with improved aerobic power, microvascular function and diminished CO2 output in the atmosphere

Experimental Physiology, EarlyView.
Abstract The study investigated whether bicycle compared with car commuting, over relatively small distances, has positive effects on physiological variables, cardiometabolic fitness and CO2 output in the atmosphere. Bike Commuters (11 M, 15 F; age [median value (interquartile range)] 51.5 (38.3–56.8) years; body mass index [BMI] 22.8 (21.0–24.1) kg m ...
Caterina Ursella, Giovanni Baldassarre, Lucrezia Zuccarelli, Federica Caponnetto, Francesco Curcio, Mattia D'Alleva, Maria De Martino, Elisabetta Fontanini, Andrea Palomba, Antonio Paolo Beltrami, Federico Formenti, Bruno Grassi   +11 more
wiley   +1 more source

Anisotropic quark stars with an interacting quark equation of state [PDF]

Physical Review D, 2019
A deep exploration of the parameter space that relates the interacting equation of state with the bag constant B, and the interaction parameter a, is fundamental for the construction of diverse models of quark stars. In particular, the anisotropy of quark stars with a well-motivated quantum chromodynamics (QCD) equation of state is presented here.
Becerra-Vergara E. A., Mojica S., Lora-Clavijo F. D., Cruz-Osorio A.   +3 more
openaire   +4 more sources

Persistence of fatigue in the absence of pathophysiological mechanisms in some patients more than 2 years after the original SARS‐CoV‐2 infection

Experimental Physiology, EarlyView.
Abstract Following an acute infection with severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2), a substantial percentage of patients report the persistence of debilitating symptoms, often grouped in a syndrome termed ‘long COVID’. We sought to identify potential pathophysiological mechanisms responsible for the persistence, in some long COVID ...
Giovanni Baldassarre, Lucrezia Zuccarelli, Thomas Favaretto, Caterina Ursella, Andrea Palomba, Paulo Cesar do Nascimento Salvador, Emanuela Sozio, Ernesto Crisafulli, Massimo Imazio, Carlo Tascini, Bruno Grassi   +10 more
wiley   +1 more source