Results 51 to 60 of about 8,717 (203)
Experimental Physiology, EarlyView.Abstract Magnetophosphenes are flickering lights perceived when an extremely low frequency magnetic field generates a sufficiently strong electric field in the head. Understanding how phosphenes are produced is crucial, as they form the basis for international safety standards and guidelines for both workers and the general population.
Nicolas Bouisset +4 more
wiley +1 more source
The Depositional Record, Volume 12, Issue 1, February 2026.Exopolymeric substances (EPS) produced in the photic zone and surface sediments sequester calcium. Below the sediment surface, heterotrophic bacteria degrade EPS, releasing calcium resulting in carbonate precipitation. This process, which continues for millennia deep in the core, is an important sink for atmospheric carbon dioxide.
Pieter T. Visscher +9 more
wiley +1 more source
Characterization of the melanopsin gene (Opn4x) of diurnal and nocturnal snakes
BMC Evolutionary Biology, 2019 Background A number of non-visual responses to light in vertebrates, such as circadian rhythm control and pupillary light reflex, are mediated by melanopsins, G-protein coupled membrane receptors, conjugated to a retinal chromophore.
Einat Hauzman +3 more
doaj +1 more source
Ecophysiological and biochemical traits of three herbaceous plants growing on the disposed coal combustion fly ash of different weathering stage [PDF]
Archives of Biological Sciences, 2013 The ecophysiological and biochemical traits of Calamagrostis epigejos (Roth.) Festuca rubra L. and Oenothera biennis L. growing on two fly ash lagoons of different weathering stage (L1-3 years and L2-11 years) of the “Nikola Tesla- A ...
Gajić Gordana +6 more
doaj +1 more source
Robust colour constancy in red-green dichromats [PDF]
, 2017 Colour discrimination has been widely studied in red-green (R-G) dichromats but the extent to which their colour constancy is affected remains unclear. This work estimated the extent of colour constancy for four normal trichromatic observers and seven R ...
Lillo, Julio +4 more
core +3 more sources
Insect Science, Volume 33, Issue 1, Page 325-335, February 2026.Jewel beetles can discriminate leaf feeding sites and bark oviposition sites based upon the opponent comparison of their blue, green, and red photoreceptor signals. Through this mechanism, green traps resemble leaves, and purple traps resemble bark, explaining their different attractiveness to males and females.
Roger D. Santer, Otar Akanyeti
wiley +1 more source
A field-deployable and handheld fluorometer for environmental water quality monitoring
Micro and Nano Systems Letters, 2018 This work reports the development of a field-deployable and fully handheld fluorometer for environmental water monitoring. Our developed fluorimeter can detect both green algae and cyanobacteria (blue-green algae) while simultaneously differentiating and
Young-Ho Shin +2 more
doaj +1 more source
Absorption and Screening in Phycomyces [PDF]
, 1967 In vivo absorption measurements were made through the photosensitive zones of Phycomyces sporangiophores and absorption spectra are presented for various growth media and for wavelengths between 400 and 580 mµ.
Burke, Patricia V. +2 more
core +2 more sources
Light during darkness and cancer: relationships in circadian photoreception and tumor biology [PDF]
, 2006 The relationship between circadian phototransduction and circadian-regulated processes is poorly understood. Melatonin, commonly a circadian phase marker, may play a direct role in a myriad of physiologic processes.
Blask, David E. +2 more
core +2 more sources
Multiple Photopigments Entrain the Mammalian Circadian Oscillator [PDF]
Neuron, 2007 Circadian rhythms are entrained to the natural day:night cycle. Melanopsin expressed in retinal ganglion cells partially accounts for circadian photoentrainment. Dkhissi-Benyahya et al. demonstrate that medium wavelength opsin (MW-opsin) also plays an important role in the process.
openaire +2 more sources