Results 41 to 50 of about 172,315 (161)

Modeling the erythemal surface diffuse irradiance fraction for Badajoz, Spain [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
Despite its important role on the human health and numerous biological processes, the diffuse component of the erythemal ultraviolet irradiance (UVER) is scarcely measured at standard radiometric stations and therefore needs to be estimated.
G. Sanchez, A. Serrano, M. L. Cancillo
doaj   +1 more source

Fractional-calculus diffusion equation [PDF]

open access: yesNonlinear Biomedical Physics, 2010
Sequel to the work on the quantization of nonconservative systems using fractional calculus and quantization of a system with Brownian motion, which aims to consider the dissipation effects in quantum-mechanical description of microscale systems.The canonical quantization of a system represented classically by one-dimensional Fick's law, and the ...
Ajlouni, Abdul-Wali M. S.   +1 more
openaire   +2 more sources

A fractional diffusion random laser [PDF]

open access: yesScientific Reports, 2019
AbstractThe goal of this letter is to introduce the concept of a non-resonant fractional random laser. This is achieved by extending the classical Letokhov model of photon diffusion through disordered gain media to fractional differential operators in space and time.
Yuyao Chen   +2 more
openaire   +2 more sources

Semi-Fractional Diffusion Equations [PDF]

open access: yesFractional Calculus and Applied Analysis, 2019
32 pages, 5 ...
Kern, Peter   +2 more
openaire   +2 more sources

The relationship between diffuse and total radiation at the Solar and Ozone Observatory in Hradec Králové

open access: yesMeteorologische Zeitschrift, 1996
The daily and monthly data of the total radiation are used for estimation of the relationship between diffuse and total radiation in Hradec Králové. Analyses were expressed in parameters with the use of the method of least squares and a "Robust Locally ...
Michal Janouch
doaj   +1 more source

Unveiling the Nature of Galactic TeV Sources with IceCube Results

open access: yesThe Astrophysical Journal Letters, 2023
IceCube collaboration reported the first high-significance observation of the neutrino emission from the Galactic disk. The observed signal can be due to diffuse emission produced by cosmic rays interacting with interstellar gas but can also arise from a
V. Vecchiotti   +2 more
doaj   +1 more source

Erdélyi-Kober fractional diffusion [PDF]

open access: yesFractional Calculus and Applied Analysis, 2011
The aim of this Short Note is to highlight that the {\it generalized grey Brownian motion} (ggBm) is an anomalous diffusion process driven by a fractional integral equation in the sense of Erdélyi-Kober, and for this reason here it is proposed to call such family of diffusive processes as {\it Erdélyi-Kober fractional diffusion}.
openaire   +3 more sources

Disentangling the Impacts of Anthropogenic Aerosols on Terrestrial Carbon Cycle During 1850–2014

open access: yesEarth's Future, 2021
Aerosols have a dimming and cooling effect and change hydrological regimes, thus affecting carbon fluxes, which are sensitive to climate. Aerosols also scatter sunlight, which increases the fraction of diffuse radiation, increasing photosynthesis.
Yuan Zhang   +9 more
doaj   +1 more source

Emergence of liquid following laser melting of gold thin films

open access: yesIUCrJ, 2023
X-ray structural science is undergoing a revolution driven by the emergence of X-ray Free-electron Laser (XFEL) facilities. The structures of crystalline solids can now be studied on the picosecond time scale relevant to phonons, atomic vibrations which ...
Ian K. Robinson   +23 more
doaj   +1 more source

Fractional Reaction-Diffusion Equations [PDF]

open access: yesAstrophysics and Space Science, 2006
LaTeX, 17 pages, corrected ...
Saxena, R. K.   +2 more
openaire   +3 more sources

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