Results 1 to 10 of about 534,393 (266)

Effects of neighboring transitions on the mechanisms of electromagnetically induced absorption and transparency in an open degenerate multilevel system

open access: yesScientific Reports, 2022
In this study, optical Bloch equations with and without neighboring hyperfine states near the degenerate two-level system (DTLS) in the challenging case of $$^{85}$$ 85 Rb D2 transition, which involves the Doppler broadening effect, are solved.
Zeeshan Ali Safdar Jadoon   +2 more
doaj   +1 more source

Review of ionospheric irregularities and ionospheric electrodynamic coupling in the middle latitude region

open access: yesEarth and Planetary Physics, 2021
This paper briefly reviews ionospheric irregularities that occur in the E and F regions at mid-latitudes. Sporadic E (ES) is a common ionospheric irregularity phenomenon that is first noticed in the E layer.
Yi Liu   +6 more
doaj   +1 more source

A multi-platform investigation of midlatitude sporadic E and its ties to EF coupling and meteor activity [PDF]

open access: yesAnnales Geophysicae, 2016
This paper describes the results of a multi-platform observing campaign aimed at studying midlatitude sporadic E (Es) and associated ionospheric phenomena.
J. Helmboldt
doaj   +1 more source

Impairment of Excitation-Contraction Coupling in Right Ventricular Hypertrophied Muscle with Fibrosis Induced by Pulmonary Artery Banding. [PDF]

open access: yesPLoS ONE, 2017
Interstitial myocardial fibrosis is one of the factors responsible for dysfunction of the heart. However, how interstitial fibrosis affects cardiac function and excitation-contraction coupling (E-C coupling) has not yet been clarified.
Yoichiro Kusakari   +9 more
doaj   +1 more source

Induced CP-violation in the Euler–Heisenberg Lagrangian

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
In this paper, we examine the behaviour of the Euler–Heisenberg effective action in the presence of a novel axial coupling among the gauge field and the fermionic matter.
M. Ghasemkhani   +4 more
doaj   +1 more source

Spatiotemporal Differences and Spatial Convergence of the Water-Energy-Food-Ecology Nexus in Northwest China

open access: yesFrontiers in Energy Research, 2021
The Water-Energy-Food-Ecology (W-E-F-E) nexus is related to the realization of the goal of high-quality economic development in Northwest China. This paper analyzed the dynamic change trend, spatial evolution characteristics, and spatial convergence of ...
Min Wang   +3 more
doaj   +1 more source

Night-time F-region and daytime E-region ionospheric drifts measured at Udaipur during solar flares [PDF]

open access: yesAnnales Geophysicae, 2002
Ionospheric drifts measured at a low latitude station, Udaipur (Geomag. Lat. 14.5° N), in the night-time F-region and daytime E-region during solar flares have been studied. The night-time observations, which correspond to the F-region drifts, were
B. M. Vyas, B. M. Vyas, R. Pandey
doaj   +1 more source

Evaluation on the Efficiency of Water-Energy-Food Nexus Based on Data Envelopment Analysis (DEA) and Malmquist in Different Regions of China

open access: yesInternational Journal of Computational Intelligence Systems, 2019
Water-energy-food (W-E-F) nexus is an essential element for human survival, as well as the basis for the sustainable development of regional economy and ecological environment.
Tianming Zhang, Yejun Xu
doaj   +1 more source

On using a double-thin-shell approach and TEC perturbation component to sound night-time mid-latitude E–F coupling

open access: yesEarth, Planets and Space, 2022
Observations and theoretical analysis on the night-time mid-latitude ionospheric irregularities support the postulation of frequently coupled E and F regions.
Weizheng Fu   +4 more
doaj   +1 more source

Phenomenology at the LHC of composite particles from strongly interacting Standard Model fermions via four-fermion operators of NJL type

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
A new physics scenario shows that four-fermion operators of Nambu-Jona-Lasinio (NJL) type have a strong-coupling UV fixed point, where composite fermions F (bosons $$\Pi $$ Π ) form as bound states of three (two) SM elementary fermions and they couple to
R. Leonardi   +5 more
doaj   +1 more source

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