Results 61 to 70 of about 121,350 (241)

Sex differences in the prefrontal cortex and muscle oxygenation during exercise until exhaustion in endurance‐trained individuals

open access: yesExperimental Physiology, EarlyView.
Abstract figure legend During cardiopulmonary exercise testing, the decline in oxygenation in the prefrontal cortex of women is striking. This crucial brain area is directly involved in planning motor tasks. The decline is particularly pronounced at higher exercise intensities, especially after reaching the respiratory compensation point or anaerobic ...
Daniel Ramos‐López   +12 more
wiley   +1 more source

Charmed baryon weak decays with SU(3) flavor symmetry

open access: yesJournal of High Energy Physics, 2017
We study the semileptonic and non-leptonic charmed baryon decays with SU(3) flavor symmetry, where the charmed baryons can be B c  = (Ξ c 0, Ξ c +, Λ c +), B c ′ = (Σ c (++,+,0), Ξ c ′ (+,0), Ω c 0), B cc  = (Ξ cc + +, Ξ cc +, Ω c +) or B cc  = Ω ccc + +.
C. Q. Geng   +3 more
doaj   +1 more source

Light Quark Mass Dependence in Heavy Quarkonium Physics [PDF]

open access: yesPhysical Review Letters, 2012
5 pages, 5 figures. Version to appear in Phys.
Feng-Kun Guo, Ulf-G. Meißner
openaire   +4 more sources

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

open access: yesExperimental Physiology, EarlyView.
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   +2 more
wiley   +1 more source

Two-meson form factors in unitarized chiral perturbation theory

open access: yesJournal of High Energy Physics, 2021
We present a comprehensive analysis of form factors for two light pseudoscalar mesons induced by scalar, vector, and tensor quark operators. The theoretical framework is based on a combination of unitarized chiral perturbation theory and dispersion ...
Yu-Ji Shi   +5 more
doaj   +1 more source

Heavy and light quarks in the instanton vacuum

open access: yes, 2011
Assuming the gluon field is well approximated by instanton configurations we derive a light quarks determinant and calculate its contribution to the specific heavy quarks correlators -- namely, the heavy quark propagator and heavy quark-aniquark ...
Musakhanov, M.
core   +2 more sources

Quenched charmonium spectrum on anisotropic lattices [PDF]

open access: yes, 2000
We present the results of quenched charmonium spectrum for S- and P-states, obtained by a relativistic heavy quark method on anisotropic lattices. Simulations are carried out using the standard plaquette gauge action and a meanfield-improved clover quark
A. Ali Khan   +20 more
core   +2 more sources

Arterial–venous differences of brain‐derived neurotrophic factor isoforms across the brain and muscle after exercise at different intensities

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Exercise‐induced increases in forearm venous plasma and serum brain‐derived neurotrophic factor (BDNF) are often assumed to be indicative of release from the brain. Sixteen healthy and physically fit adults (20–40 years old) were recruited to investigate whether exercise‐induced changes in forearm venous mature BDNF (mBDNF) and ...
Olga Tarassova   +10 more
wiley   +1 more source

Parity doubling as a tool for right-handed current searches

open access: yesJournal of High Energy Physics, 2018
The V-A structure of the weak interactions leads to definite amplitude hierarchies in exclusive heavy-to-light decays mediated by b → (d, s)γ and b→d,sℓℓ¯ $$ b\to \left(d,\ s\right)\ell \overline{\ell} $$. However, the extraction of right-handed currents
James Gratrex, Roman Zwicky
doaj   +1 more source

Leptonic and semileptonic decays of heavy mesons [PDF]

open access: yes, 1997
A heavy-quark limit of the Dyson-Schwinger equations is introduced and used in an exploratory study of leptonic and semileptonic decays of heavy mesons.
Ivanov, M. A.   +3 more
core   +2 more sources

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