Results 21 to 30 of about 243,053 (268)

ON CHANGE OF COLOUR IN HAIR. [PDF]

The Lancet, 1873
n ...
openaire   +2 more sources

Advance in mechanism of plant leaf colour mutation

Notulae 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, Shuiyuan CHENG, Feng XU, Zexiong CHEN, Zhongbing LIU, Weiwei ZHANG, Jiarui ZHENG, Ling WANG   +7 more
doaj   +1 more source

Lizard colour plasticity tracks background seasonal changes

Biology Open, 2020
Environmental heterogeneity on a spatial and temporal scale fosters an organism's capacity to plastically alter coloration. Predation risk might favour the evolution of phenotypic plasticity in colour patterns, as individuals who change colour throughout
Daniele Pellitteri-Rosa, Andrea Gazzola, Simone Todisco, Fabio Mastropasqua, Cristiano Liuzzi   +4 more
doaj   +1 more source

Reliability of a Handheld Bluetooth Colourimeter and Its Application to Measuring the Effects of Time from Harvest, Row Orientation and Training System on Nectarine Skin Colour

Horticulturae, 2021
This work aimed to (i) determine the reliability of a portable Bluetooth colourimeter for fruit colour measurements; (ii) characterise the changes in quantitative skin colour attributes in a nectarine cultivar in response to time from harvest; and (iii ...
Alessio Scalisi, Mark G. O’Connell, Daniele Pelliccia, Tim Plozza, Christine Frisina, Subhash Chandra, Ian Goodwin   +6 more
doaj   +1 more source

Colour changes during beer aging.

Kvasný průmysl, 2008
Spectrum changes of yellow, orange and yellow-red oxidation products of epicatechin with their typical absorption maximum around 430 nm were studied. Oxygen is necessary for the non-enzymatic formation of these substances and their formation increases ...
Jan ŠAVEL, Petr KOŠIN, Adam BROŽ
doaj   +1 more source

Colour Changes Evaluation of Freshly Cut Alder Veneers Under the Influence of Indoor Sunlight [PDF]

Pro Ligno, 2011
The paper presents an experimental study concerning the colour changes occurred on the surfaces ofblack alder veneers (Alnus glutinosa), obtained from a freshly cut (not treated) log, after their exposure tosunlight and darkness, for 1 and 3 months ...
Emilia Adela SALCA
doaj  

Colour Vision: Adapting to change [PDF]

Current Biology, 1995
The colours we see reflect not only the light wavelengths presently being detected, but also those already received. To understand colour constancy therefore requires an understanding of adaptation in the visual system.
openaire   +2 more sources

Colour Changes of Acetal Resins (CAD-CAM) In Vivo

Applied Sciences, 2022
To quantify the discolouration of the temporary acetal resins in vivo, based on the weeks of follow-up and the salivary pH in the three thirds of the tooth. To find out if the final CIELAB coordinates can be predicted from the initial colour coordinates,
Cristina Gómez-Polo, Ana María Martín Casado, Norberto Quispe, Eva Rosel Gallardo, Javier Montero   +4 more
doaj   +1 more source

Local Colour Control on a Soft Continuum Robot by Bending Embedded Optical Fibre Dissipation Sensor Pairs [PDF]

EPJ Web of Conferences
Colour as an information carrier widely exists in nature for camouflage and signalling, inspiring recent interest in bio-inspired colour-changing materials.
Wang Xiang, Wang Huijiang, Sun Zhaojie, Iida Fumiya   +3 more
doaj   +1 more source

Light-Induced Colour Changes in Wood Surfaces in Indoor Conditions Determined by an Artificial Accelerated Test: Influence of Wood Species and Coating Materials

Applied Sciences
Stabilising the natural colour of wood species exposed to light in indoor conditions is a challenge that could be better addressed based on a deeper understanding of the occurring phenomena and influencing factors.
Mihai-Junior Torcătoru, Maria Cristina Timar   +1 more
doaj   +1 more source