Results 81 to 90 of about 172,315 (161)

Effect of diffusion of light on thin-film photovoltaic laminates

open access: yesResults in Physics, 2016
A large fraction of the daylight incident on building-integrated photovoltaic (BIPV) laminates is diffuse irradiance. In this study, fabrics of various weaves were used to simulate combinations of direct and diffuse irradiance on façade-mounted PV.
Lipi Mohanty, Stephen K. Wittkopf
doaj   +1 more source

CO-dark Molecular Gas Traced by HCO+ in the Diffuse Interstellar Medium

open access: yesThe Astrophysical Journal
A classic problem in the study of the interstellar medium (ISM) is the near-invisibility of molecular hydrogen (H _2 ) in cold environments. Observations of CO emission are typically used to indirectly trace H _2 , but a significant fraction of H _2 in ...
Daniel R. Rybarczyk   +4 more
doaj   +1 more source

DISTRIBUTED ORDER FRACTIONAL SUB-DIFFUSION [PDF]

open access: yesFractals, 2004
A distributed order fractional diffusion equation is considered. Distributed order derivatives are fractional derivatives that have been integrated over the order of the derivative within a given range. In this paper, sub-diffusive cases are considered. That is, the order of the time derivative ranges from zero to one.
openaire   +3 more sources

Ion size effects in a primitive level model of the diffuse double layer

open access: yesCondensed Matter Physics, 2004
An analytical expression is developed for the potential drop across the diffuse layer Φd in terms of a cubic polynomial in the corresponding estimate in the Gouy-Chapman approximation φdGC.
W.R.Fawcett, T.G.Smagala
doaj   +1 more source

New Empirical Models for Estimation of Diffuse Radiation using Satellite Data [PDF]

open access: yesRenewable Energy Research and Applications
Diffuse radiation is used in photovoltaic systems and other energy applications. Since global radiation is measured by local meteorological stations, it is possible to reach these radiation data.
Mustafa Arslan, Mehmet Cunkas
doaj   +1 more source

Satellite Retrieval of Downwelling Shortwave Surface Flux and Diffuse Fraction under All Sky Conditions in the Framework of the LSA SAF Program (Part 1: Methodology)

open access: yesRemote Sensing, 2019
Several studies have shown that changes in incoming solar radiation and variations of the diffuse fraction can significantly modify the vegetation carbon uptake.
Dominique Carrer   +5 more
doaj   +1 more source

Diffusion and Fractional Diffusion Based Image Processing.

open access: yes, 2009
We consider the background to describing strong scattering in terms of diffusive processes based on the diffusion equation. Intermediate strength scattering is then considered in terms of a fractional diffusion equation which is studied using results from fractional calculus.
openaire   +3 more sources

Star formation beyond galaxies: widespread in-situ formation of intra-cluster stars

open access: yesThe Open Journal of Astrophysics
We study the fraction of the intra-cluster light (ICL) formed in-situ in the three most massive clusters of the TNG50 simulation, with virial masses $\sim 10^{14}$\msun.
Niusha Ahvazi   +5 more
doaj   +1 more source

Low-Temperature Hydrothermal Plumes in the Near-Bottom Boundary Layer at Endeavour Segment, Juan de Fuca Ridge [PDF]

open access: yesOceanography, 2012
Low-temperature (typically 5–75°C) fluid, commonly referred to as "diffuse" hydrothermal flow, emanates from fractures over a significant portion of the Juan de Fuca Ridge seafloor in the Northeast Pacific Ocean (Kelley et al., 2012, in this issue ...
Susan Hautala   +4 more
doaj  

Measurement and forecasting of the diffuse fraction of solar irradiance using a hybrid stacking model in Saudi Arabia

open access: yesScientific Reports
Accurate quantification and robust predictive modeling of diffuse solar irradiance ratios are essential for optimizing photovoltaic (PV) system efficiency, particularly in regions characterized by pronounced climatic heterogeneity.
Haifa Harrouch   +8 more
doaj   +1 more source

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