Results 21 to 30 of about 262,925 (314)

Microscopic theory of colour in lutetium hydride

open access: yesNature Communications, 2023
Nitrogen-doped lutetium hydride has recently been proposed as a near-ambient-conditions superconductor. Interestingly, the sample transforms from blue to pink to red as a function of pressure, but only the pink phase is claimed to be superconducting ...
Sun-Woo Kim   +4 more
doaj   +1 more source

Colour change and colour phases in Lethrinidae with insights into ecology

open access: yesEcology and Evolution, 2023
AbstractColour change is used by a wide range of animals. It is used for intra‐ and interspecific communication and crypsis, and can occur on morphological and physiological levels. Bony fish employ rapid physiological colour change and display various types of patterns and colouration (colour phases) useful for aposematic and cryptic purposes.
Myriam E. Widmann   +2 more
openaire   +3 more sources

Neural correlates of colour categories [PDF]

open access: yes, 2007
This study used an electrophysiological marker of visual detection to investigate adults' processing of colour difference. Event-related potentials were collected from the identical colour (green: G0) presented as the frequent or infrequent stimulus ...
Davidoff, Jules B.   +3 more
core   +1 more source

Wood discoloration patterns depending on the light source

open access: yesHeritage Science, 2022
The wood photodegradation, including discolouration caused by exposure to UV and solar radiation, has been intensively studied, while the effect of artificial lighting on wood has been little investigated.
Dace Cirule   +3 more
doaj   +1 more source

Dragonflies that Change Colour: Nature's Hidden Redox Chemistry

open access: yesCHIMIA, 2022
The colour distinction between male and female, and between young and mature male dragonflies of the genera Crocothemis and Sympetrum arises from simple redox chemistry.
Catherine E. Housecroft
doaj   +1 more source

Real-time colour recognition in symbolic programming for machine vision systems [PDF]

open access: yes, 1995
It is impossible to collect more than a tiny proportion of all of the possible examples of a given hue to form a training set for a machine that learns to discriminate colours. In view of this, it is argued that colour generelization is essential.
Batchelor, Bruce G., Whelan, Paul F.
core   +1 more source

Colour 0.3.14 [PDF]

open access: yes, 2018
Colour Science for Python Colour is an open-source Python package providing a comprehensive number of algorithms and datasets for colour science. It is freely available under the New BSD License terms.
Leinweber, Katrin (6501719)   +39 more
core   +1 more source

Advance in mechanism of plant leaf colour mutation

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 2021
As a common mutation trait in plants, leaf colour mutation is related to the degree of chlorophyll and anthocyanin changes and the destruction of chloroplast structure. This study summarizes the latest research progress in leaf colour mutation mechanism,
Mingyue FU   +7 more
doaj   +1 more source

Skin blood perfusion and oxygenation colour affect perceived human health [PDF]

open access: yes, 2009
I Stephen was funded by a BBSRC Studentship.Skin blood perfusion and oxygenation depends upon cardiovascular, hormonal and circulatory health in humans and provides socio-sexual signals of underlying physiology, dominance and reproductive status in some ...
Stephen, ID   +17 more
core   +1 more source

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