Results 51 to 60 of about 277,108 (344)

Ultraviolet Dust Grain Properties in Starburst Galaxies: Evidence from Radiative Transfer Modeling and Local Group Extinction Curves

open access: yes, 2005
This paper summarizes the evidence of the ultraviolet properties of dust grains found in starburst galaxies. Observations of starburst galaxies clearly show that the 2175 A feature is weak or absent.
Gordon, Karl D.
core   +2 more sources

Element different method for three-dimensional radiative transfer within heterogeneous media

open access: yesResults in Physics, 2023
The ability to accurately determine three-dimensional radiative intensity with high spatial and angular resolution is crucial for the diagnosis of radiative combustion.
Yifan Li   +5 more
doaj   +1 more source

The nicotinamide hypothesis revisited—plant defense signaling integrating PARP, nicotinamide, nicotinic acid, epigenetics, and glutathione

open access: yesFEBS Letters, EarlyView.
Nicotinamide (NIC) and nicotinic acid (NIA) are proposed as stress signaling compounds in plants. Oxidative stress may lead to single strand breaks (SSB) in DNA, which activate poly(ADP‐ribose) polymerase (PARP). NIC and NIA are then formed from NAD. NIC and NIA can promote epigenetic changes leading to the expression of defense genes specific for the ...
Torkel Berglund, Anna B. Ohlsson
wiley   +1 more source

Radiative Heat Transfer in Anisotropic Many-Body Systems: Tuning and Enhancement

open access: yes, 2014
A general formalism for calculating the Radiative Heat Transfer in many body systems with anisotropic component is presented. Our scheme extends the theory of radiative heat transfer in isotropic many body systems to anisotropic cases.
Nikbakht, M.
core   +1 more source

Radiation-hydrodynamics Effects in an Inhomogeneous Medium

open access: yesThe Astrophysical Journal
Radiation flow through an inhomogeneous medium is critical in a wide range of physics and astronomy applications, from transport across cloud layers on the Earth to the propagation of supernova blast waves producing ultraviolet and X-ray emission ...
Christopher L. Fryer   +11 more
doaj   +1 more source

Resonance Energy Transfer Molecular Imaging Application in Biomedicine

open access: yesJournal of Isotopes, 2016
Resonance energy transfer molecular imaging (RETI) can markedly improve signal intensity and tissue penetrating capacity of optical imaging, and have huge potential application in the deep-tissue optical imaging in vivo.
NIE Da-hong1,2;TANG Gang-hua1,3
doaj   +1 more source

Single cis‐elements in brassinosteroid‐induced upregulated genes are insufficient to recruit both redox states of the BIL1/BZR1 DNA‐binding domain

open access: yesFEBS Letters, EarlyView.
Phytohormone brassinosteroid‐induced gene regulation by the transcription factor BIL1/BZR1 involves redox‐dependent DNA‐binding alternation and interaction with the transcription factor PIF4. The reduced BIL1/BZR1 dimer binds preferred cis‐elements, while oxidation alters its oligomerization state and disrupts DNA‐binding ability.
Shohei Nosaki   +4 more
wiley   +1 more source

Atmospheric dynamics of red supergiant stars and Interferometry

open access: yes, 2007
We developed a 3D pure LTE radiative transfer code to derive observables expected for RSGs, with emphasis on small scale structures, from radiative-hydrodynamic (RHD) simulations of red supergiant stars (RSGs) carried out with CO5BOLD (Freytag et al ...
Chiavassa, A.
core   +1 more source

Analytical Models of Exoplanetary Atmospheres. II. Radiative Transfer via the Two-stream Approximation [PDF]

open access: yes, 2014
We present a comprehensive analytical study of radiative transfer using the method of moments and include the effects of non-isotropic scattering in the coherent limit.
Heng, Kevin   +2 more
core   +2 more sources

Radiative Transfer in Stellar Atmospheres [PDF]

open access: yesEAS Publications Series, 2010
This review presents basic equations for the solution of the NLTE radiative transfer problem for trace elements and methods for its solution are summarized. The importance of frequency coupling in radiative transfer in stellar atmospheres is emphasized.
openaire   +3 more sources

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