Results 1 to 10 of about 395,927 (299)

Mid-infrared luminosity as an indicator of the total infrared luminosity of galaxies [PDF]

open access: bronze, 2005
The infrared (IR) emission plays a crucial role for understanding the star formation in galaxies hidden by dust. We first examined four estimators of the IR luminosity of galaxies, L_fir (Helou et al. 1988), L_tir (Dale et al.
T. T. Takeuchi   +9 more
openalex   +7 more sources

Enhancing Retina Images by Lowpass Filtering Using Binomial Filter [PDF]

open access: yesDiagnostics
This study presents a method to enhance the contrast and luminosity of fundus images with boundary reflection. In this work, 100 retina images taken from online databases are utilized to test the performance of the proposed method.
Mofleh Hannuf AlRowaily   +4 more
doaj   +2 more sources

Characterizing the luminosity components of luminous infrared galaxies in multi-wavelength from the X-ray to the far-infrared [PDF]

open access: yesScientific Reports
We characterize luminosity components of Ultra/Luminous Infrared Galaxies (U/LIRGs) in multi-wavelength from the X-ray to far-infrared. A set of 63 AGN U/LIRGs was selected where these galaxies are powered by a central active galactic nucleus (AGN ...
Abdallah A. M. Ali   +3 more
doaj   +2 more sources

Design Concept for a Future Super Proton-Proton Collider

open access: yesFrontiers in Physics, 2022
Following the discovery of the Higgs boson at the LHC in 2012, new large colliders are being considered and studied by the international high-energy community to explore the Higgs boson in details and to probe new physics beyond the Standard Model.
Jingyu Tang, Jingyu Tang
doaj   +1 more source

Periphytic algae biomass at different shading levels: an experimental approach

open access: yesActa Limnologica Brasiliensia, 2021
: Aim Light is an essential component in the process of synthesis of organic compounds by photosynthetic organisms. Assuming that a higher level of luminosity would positively influence the production of biomass, we evaluated the influence of different ...
Helivania Sardinha dos Santos   +1 more
doaj   +1 more source

Leaf anatomy and morpho-physiological mechanisms of acclimation to high irradiance in heliconia genotypes

open access: yesCiência e Agrotecnologia, 2023
The amount of solar irradiation available in the growing environment can cause significant changes in physiology and leaf anatomy that enable crops to acclimate to different light conditions.
Fernanda Andrade Leite   +5 more
doaj   +1 more source

Área foliar específica e anatomia foliar quantitativa do capim-braquiária e do amendoim-forrageiro submetidos a sombreamento Specific leaf area and quantitative leaf anatomy of signalgrass and forage peanut submitted to shading

open access: yesRevista Brasileira de Zootecnia, 2011
A área foliar específica e as características anatômicas foliares da braquiária (Brachiaria decumbens cv. Basilisk) e do amendoim-forrageiro (Arachis pintoi cv.
Kátia Fernanda Gobbi   +4 more
doaj   +1 more source

The Relationship between Slope and Luminosity [PDF]

open access: yesKirkuk Journal of Science, 2010
In this study, a sample of galaxies has been adopted. It consists of 112 elliptical galaxies, among them were 56 dwarf elliptical galaxies, which belong to virgo cluster, 37 normal galaxies and 19 bright galaxies. Also, surface brightness profiles fitted
Mohsen H. Ali AL-Khafajy
doaj   +1 more source

A Novel Luminance-Based Algorithm for Classification of Semi-Dark Images

open access: yesApplied Sciences, 2021
Image classification of a visual scene based on visibility is significant due to the rise in readily available automated solutions. Currently, there are only two known spectrums of image visibility i.e., dark, and bright.
Mehak Maqbool Memon   +4 more
doaj   +1 more source

Tree thinning affects the physicochemical characteristics and bioactive compounds in ‘Barton’ and ‘Melhorada’ pecan cultivars [PDF]

open access: yesCiência e Agrotecnologia
The production and consumption of pecan nuts have been on the rise in recent times, which renders it necessary to study the best production practices to increase the yield, enhance the flavor, and maintain the bioactive components in the final product ...
Jessica Fernanda Hoffmann   +8 more
doaj   +1 more source

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