Results 81 to 90 of about 150,777 (255)

Germinação de sementes de Conyza canadensis e Conyza bonariensis em diferentes condições de temperatura e luminosidade Germination of Conyza canadensis and Conyza bonariensis seeds under different conditions of temperature and light

open access: yesPlanta Daninha, 2011
A buva (Conyza canadensis e C. bonariensis) é uma planta daninha de importância crescente no Brasil. Essas espécies ocorrem em diversas regiões do mundo, sendo importantes infestantes de culturas perenes e anuais sob sistema de semeadura direta, cultivo ...
O.M. Yamashita, S.C. Guimarães
doaj   +1 more source

On the maximum accretion luminosity of magnetized neutron stars: connecting X-ray pulsars and ultraluminous X-ray sources [PDF]

open access: yes, 2015
We study properties of luminous X-ray pulsars using a simplified model of the accretion column. The maximal possible luminosity is calculated as a function of the neutron star (NS) magnetic field and spin period. It is shown that the luminosity can reach
A. Mushtukov   +3 more
semanticscholar   +1 more source

Measuring Luminosity at OLYMPUS [PDF]

open access: yes, 2014
Published by Deutsches Elektronen-Synchrotron, DESY ...
openaire   +2 more sources

Fluctuations of the luminosity distance

open access: yesPhysical Review D, 2006
23 pages, 15 figures, errors in published version corrected (eqs. (53), (55), (58) and (59))
Bonvin, Camille   +2 more
openaire   +5 more sources

The Galaxy Luminosity Function and Luminosity Density at Redshift z = 0.1 [PDF]

open access: yes, 2002
Using a catalog of 147,986 galaxy redshifts and fluxes from the Sloan Digital Sky Survey (SDSS), we measure the galaxy luminosity density at z = 0.1 in five optical bandpasses corresponding to the SDSS bandpasses shifted to match their rest-frame shape ...
M. Blanton   +18 more
semanticscholar   +1 more source

THE LOW-LUMINOSITY END OF THE RADIUS–LUMINOSITY RELATIONSHIP FOR ACTIVE GALACTIC NUCLEI [PDF]

open access: yes, 2013
We present an updated and revised analysis of the relationship between the Hβ broad-line region (BLR) radius and the luminosity of the active galactic nucleus (AGN).
M. Bentz   +17 more
semanticscholar   +1 more source

Colorimetría del Fruto de Café (Coffea arabica L.) Durante su Desarrollo y Maduración Coffee Fruit (Coffea arabica L.) Colorimetry During its Development and Maturation

open access: yesRevista Facultad Nacional de Agronomía Medellín, 2011
Obtener estándares del color del fruto de café durante su desarrollo y maduración es necesario para diferentes procesos relacionados con la cosecha y poscosecha de este producto.
José Jaime Carvajal Herrera   +3 more
doaj  

Green Flashes Observed in Optical and Infrared during an Extreme Electric Storm

open access: yesApplied Sciences
A strong and fast-moving electrical storm occurred in the Southwest Florida region overnight, from 01:00 UTC on 17 April to 07:00 UTC on 17 April 2023. Video recordings were conducted in the region at Latitude N 26.34° and Longitude W 81.79° for 5 h and ...
Gilbert Green, Naomi Watanabe
doaj   +1 more source

The LUCID Detector for LHC Run-2

open access: yesUniverse, 2019
LUCID (LUminosity Cerenkov Integrating Detector) is the main luminosity monitor of the ATLAS (A Toroidal LHC Apparatus) experiment at the Large Hadron Collider (LHC) and in particular is the only one capable of providing bunch-by-bunch luminosity ...
Carla Sbarra
doaj   +1 more source

Efeito do substrato e luminosidade na germinação de Anadenanthera colubrina (Fabaceae, Mimosoideae) Effect of subsrate and luminosity on the germination of Anadenanthera colubrina (Fabaceae, Mimosoideae)

open access: yesRevista Árvore, 2007
Angico (Anadenanthera colubrina (Vell.) Brenan var. cebil (Griseb.) Altschul) é uma Mimosaceae arbórea de grande distribuição na América do Sul, com rápido crescimento e bastante utilizada para fornecimento de tanino, madeira, mel e resina, além de ser ...
Ana Carolina da Cunha Rodrigues   +3 more
doaj   +1 more source

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