Results 31 to 40 of about 141,795 (265)

Monthly average daily diffuse solar radiation in Poland within the period 2005–2015

open access: yesITM Web of Conferences, 2018
In this paper an 11-year series of daily values of diffuse solar radiation registered at 8 actinometric stations in Poland was used to describe the characteristics of diffuse radiation and diffuse fraction of global radiation for the area of Poland ...
Kleniewska Małgorzata   +2 more
doaj   +1 more source

Computation of Solar Radiation on Horizontal Surface Over Some Iraqi Cities [PDF]

open access: yesEngineering and Technology Journal, 2011
In this study a simple correlation is developed to predict monthly average daily global solar radiation on a horizontal surfaces for different Iraqi locations.
Firas Aziz Ali
doaj   +1 more source

Diffuse gamma radiation

open access: yesThe Astrophysical Journal, 1978
An examination of the intensity, energy spectrum, and spatial distribution of the diffuse gamma-radiation observed by SAS-2 satellite away from the galactic plane in the energy range above 35 MeV has shown that it consists of two components. One component is generally correlated with galactic latitudes, the atomic hydrogen column density was deduced ...
C. E. Fichtel   +2 more
openaire   +1 more source

Transmissividade a radiação solar do polietileno de baixa densidade utilizado em estufas Solar radiation transmissivity through low density polyethylene used in greenhouses

open access: yesCiência Rural, 1995
Determinou-se a transmissividade à radiação solar do polietileno de baixa densidade utilizado em estufas. O experimento foi conduzido em uma estufa tipo Capela com dimensões de 10m x 25m, coberta com polietileno transparente de baixa densidade, com ...
Galileo Adeli Buriol   +3 more
doaj   +1 more source

Diffusion weighted imaging in radiation necrosis [PDF]

open access: yesJournal of Neurology, Neurosurgery & Psychiatry, 2003
This case report suggests that magnetic resonance imaging with diffusion weighted imaging may help distinguish between tumour recurrence and radiation induced necrosis in patients previously treated for a brain tumour.
V, Biousse   +3 more
openaire   +2 more sources

Diffuse radiation in the Galaxy

open access: yesThe Astrophysical Journal, 1941
Observations have been obtained to verify the existence of diffuse interstellar radiation. A Fabry photometer, attached to the 40-inch refractor at the Yerkes Observatory, was used to measure the the brightness of regions over a wide range of galactic latitude.
L. C. Henyey, J. L. Greenstein
openaire   +1 more source

The Effect of Collector Shading and Masking on Optimized PV Field Designs

open access: yesEnergies, 2019
Photovoltaic (PV) solar fields are deployed with multiple rows. The second and subsequent rows are subject to shading and masking by the rows in front. The direct beam incident radiation on the second row is affected by shading and the diffuse incident ...
Avi Aronescu, Joseph Appelbaum
doaj   +1 more source

Parareal Thermal Radiation Diffusion

open access: yesJournal of Computational and Theoretical Transport
This article describes a parallel-in-time implementation of a thermal radiation diffusion code using the Parareal methodology. This work builds on previous Parareal diffusion research by demonstrating that the Parareal method can also work well for diffusion problems with non-linear coupling, as thermal radiation does to material energy.
Simon Butson   +3 more
openaire   +1 more source

Anisotropic Diffuse Radiation Model of Photovoltaic Systems Deployed near Walls

open access: yesEnergies
The deployment of solar photovoltaic (PV) systems on rooftops in urban environments is to reduce land area required for electricity generation. These deployments may encounter shading and masking on the PV collectors from surrounding building walls, thus
Joseph Appelbaum, Assaf Peled
doaj   +1 more source

An Efficient Parameterization for Surface Shortwave 3D Radiative Effects in Large‐Eddy Simulations of Shallow Cumulus Clouds

open access: yesJournal of Advances in Modeling Earth Systems, 2023
Most atmospheric models consider radiative transfer only in the vertical direction (1D), as 3D radiative transfer calculations are too costly. Thereby, horizontal transfer of radiation is omitted, resulting in incorrect surface radiation fields.
Mirjam Tijhuis   +3 more
doaj   +1 more source

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