Results 11 to 20 of about 172,037 (253)
, 2015 We present an analysis of 123 gamma-ray bursts (GRBs) with known redshifts possessing an afterglow plateau phase. We reveal that La-T∗a correlation between the X-ray luminosity La at the end of the plateau phase and the plateau duration, T∗a, in the GRB ...
Paul Thomas O'Brien (7629023) +5 more
core +8 more sources
A Novel Luminance-Based Algorithm for Classification of Semi-Dark Images
Applied 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
Luminosity and Contrast Adjustment of Fundus Images with Reflectance
Applied Sciences, 2023 This paper presents an automatic correction method for luminosity and contrast variation in fundus images. Sixty retina or fundus images with different levels of reflectance are selected from online databases and used to assess the effectiveness of the ...
Mofleh Hannuf AlRowaily +2 more
doaj +1 more source
Design Concept for a Future Super Proton-Proton Collider
Frontiers 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
Acta 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
Ciência 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
Absolute luminosity measurements with the LHCb detector at the LHC [PDF]
, 2012 Absolute luminosity measurements are of general interest for colliding-beam experiments at storage rings. These measurements are necessary to determine the absolute cross-sections of reaction processes and are valuable to quantify the performance of the ...
Reid, Matthew M. +11 more
core +1 more source
Temas Agrarios, 2018 Potassium is a macronutrient that can improve the growth of crops. A randomized complete block design was used to evaluate the influence of four planting densities (50,000, 41,667, 33,333, 31,250 plants ha-1) and three potassium levels (300, 250, 200 kg ...
Amanda Silva Parra +2 more
doaj +1 more source
Period-Luminosity-Colour distribution and classification of Galactic oxygen-rich LPVs I. Luminosity calibrations [PDF]
, 1999 The absolute K magnitudes and kinematic parameters of about 350 oxygen-rich Long-Period Variable stars are calibrated, by means of an up-to-date maximum-likelihood method, using HIPPARCOS parallaxes and proper motions together with radial velocities and,
X. Luri +11 more
core +1 more source
Pesquisa Agropecuária Brasileira, 1999 O presente trabalho teve por objetivo avaliar a influência do sombreamento sobre os teores de carboidratos não-estruturais e fenóis solúveis totais em folhas e caules de estacas de plantas matrizes de araçazeiro (Psidium cattleyanum Sabine).
João Guilherme Casagrande Junior +4 more
doaj +1 more source