Results 31 to 40 of about 32,712 (291)

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

Remarks on the maximum luminosity [PDF]

open access: yesPhysical Review D, 2018
10 pages (including appendices), 4 figures, 1 table, submitted to Phys.
Christopher J. Moore   +5 more
openaire   +2 more sources

Efeito da luz e da quebra de dormência na germinação de sementes de espécies de plantas daninhas Effect of light and dormancy break on weed species seed germination

open access: yesPlanta Daninha, 2007
Objetivou-se com este trabalho verificar a quebra de dormência, utilizando ácido sulfúrico (H2SO4) e escarificação mecânica, e o efeito da luz na germinação das espécies Euphorbia heterophylla, Ipomoea nil, Sida glaziovii e Brachiaria plantaginea.
F.L. Salvador   +4 more
doaj   +1 more source

Reconsidering maximum luminosity [PDF]

open access: yesInternational Journal of Modern Physics D, 2021
The suggestion that there is a maximum luminosity (maximum power) in nature has a long and somewhat convoluted history. Though this idea is commonly attributed to Freeman Dyson, he was actually much more circumspect in his views. What is certainly true is that dimensional analysis shows that the speed of light and Newton’s constant of gravitation can ...
Aden Jowsey, Matt Visser
openaire   +3 more sources

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 Luminosity of Young Jupiters [PDF]

open access: yesThe Astrophysical Journal, 2007
Traditional thermal evolution models of giant planets employ arbitrary initial conditions selected more for computational expediency than physical accuracy. Since the initial conditions are eventually forgotten by the evolving planet, this approach is valid for mature planets, if not young ones.
Marley, Mark S   +4 more
openaire   +6 more sources

Luminosity measurement at CMS [PDF]

open access: yesProceedings of Technology and Instrumentation in Particle Physics 2014 — PoS(TIPP2014), 2015
The measurement of the luminosity delivered by the LHC is pivotal for several key physics analyses. During the first three years of running, tremendous steps forward have been made in the comprehension of the subtleties related to luminosity monitoring and calibration, which led to an unprecedented accuracy at a hadron collider.
openaire   +4 more sources

THE PROTOSTELLAR LUMINOSITY FUNCTION [PDF]

open access: yesThe Astrophysical Journal, 2011
The protostellar luminosity function (PLF) is the present-day luminosity function of the protostars in a region of star formation. It is determined using the protostellar mass function (PMF) in combination with a stellar evolutionary model that provides the luminosity as a function of instantaneous and final stellar mass. As in McKee & Offner (2010)
Christopher F. McKee   +1 more
openaire   +3 more sources

Chemical and agronomic development of Kalanchoe brasiliensis Camb. and Kalanchoe pinnata (Lamk.) Pers under light and temperature levels

open access: yesAnais da Academia Brasileira de Ciências, 2011
This study compares the development of Kalanchoe brasiliensis and Kalanchoe pinnata, which are medicinal species known as "saião" and "folha da fortuna" that are used interchangeably by the population for medicinal purposes.
Bruna P. Cruz   +3 more
doaj   +1 more source

The Luminosity Function of M3 [PDF]

open access: yesThe Astrophysical Journal, 1999
We present a high precision, large sample luminosity function (LF) for the Galactic globular cluster M3. With a combination of ground based and Hubble Space Telescope data we cover the entire radial extent of the cluster. The observed LF is well fit by canonical standard stellar models from the red giant branch (RGB) tip to below the main sequence ...
Oscar Straniero   +8 more
openaire   +3 more sources

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