Results 41 to 50 of about 783,043 (296)

Influence of Lighting and Laser Irradiation on the Germination of Caper Seeds

open access: yesAgriculture, 2022
Caper seeds present difficulties in their germination, which has been studied by several research teams. It is known that light can release dormancy in some seeds, but its effect on caper seed germination has not yet been deeply studied.
María Laura Foschi   +3 more
doaj   +1 more source

The Value of Darkness: A Moral Framework for Urban Nighttime Lighting

open access: yesScience and Engineering Ethics, 2017
The adverse effects of artificial nighttime lighting, known as light pollution, are emerging as an important environmental issue. To address these effects, current scientific research focuses mainly on identifying what is bad or undesirable about certain
Taylor Stone
semanticscholar   +1 more source

Dark catalysis [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2017
Recently it was shown that dark matter with mass of order the weak scale can be charged under a new long-range force, decoupled from the Standard Model, with only weak constraints from early Universe cosmology. Here we consider the implications of an additional charged particle $C$ that is light enough to lead to significant dissipative dynamics on ...
Agrawal, Prateek   +3 more
openaire   +2 more sources

Can UV light induce movement in cage-free laying hens?

open access: yesJournal of Applied Poultry Research, 2023
SUMMARY: In recent years, more farms have been transitioning to cage-free systems as multiple states passed regulations banning use of conventional cages, and several large food service companies pledged to exclusively source cage-free eggs by 2025–2026.
A.V. Mendoza, S. Weimer, Z. Williams
doaj   +1 more source

DARK ENERGY WITHOUT DARK ENERGY [PDF]

open access: yesDark Matter in Astroparticle and Particle Physics, 2008
32 pages, 8 figures; Invited contribution to appear in the Proceedings of the Dark2007 Conference, Sydney, Australia, Sept 2007, eds H. Klapdor-Kleingrothaus and G.F. Lewis, (World Scientific, Singapore, 2008)
openaire   +2 more sources

The Eye Pupil’s Response to Static and Dynamic Illusions of Luminosity and Darkness

open access: yesi-Perception, 2017
Pupil diameters were recorded with an eye-tracker while participants observed cruciform patterns of gray-scale gradients that evoked illusions of enhanced brightness (glare) or of enhanced darkness. The illusions were either presented as static images or
D. Zavagno, L. Tommasi, B. Laeng
semanticscholar   +1 more source

DARK MATTER, AND ITS DARKNESS [PDF]

open access: yesInternational Journal of Modern Physics D, 2006
Assuming the validity of the general relativistic description of gravitation on astrophysical and cosmological length scales, we analytically infer that the Friedmann–Robertson–Walker cosmology with Einsteinian cosmological constant, and a vanishing spatial curvature constant, unambiguously requires a significant amount of dark matter.
openaire   +3 more sources

A simple way to overcome the recalcitrance of the water fern Ceratopteris thalictroides (L.) Brongn. to cryopreservation

open access: yesActa Societatis Botanicorum Poloniae, 2015
Ceratopteris thalictroides is a water fern very sensitive to both dehydration and low temperature. This study focuses on the cryopreservation of this species by encapsulation-dehydration technique, in particular on the effects of pre-culture step ...
Damian Makowski   +2 more
doaj   +1 more source

Oh ! n’insultez jamais une femme qui tombe !...

open access: yesRevue Italienne d'Etudes Françaises, 2021
This paper presents an unpublished translation of Victor Hugo’s poem Oh! n’insultez jamais une femme qui tombe!... (1835, Les Chants du crépuscule), followed by a commentary on the semantic and formal choices.
Maddalena Bergamin
doaj   +1 more source

The effects of pulse cycloheximide treatments on the light-induced recovery of mitotic divisions in antheridial filaments of Chara vulgaris

open access: yesActa Societatis Botanicorum Poloniae, 2014
Within the proliferative period of spermatogenesis in Chara vulgaris, the progression throughout successive cell divisions in antheridial filaments is greatly influenced by changes in photoperiodic conditions.
Maria Kwiatkowska   +2 more
doaj   +1 more source

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