Results 21 to 30 of about 161,509 (311)
Object colours, material properties and animal signals [PDF]
Journal of Experimental Biology, 2019 Humans and other animals often use colour to recognise objects regardless of their context - as a measure of material properties rather than of their contrast with a background. Most work on visual communication signals is however concerned with colour differences, typically scaled by just noticeable differences (JNDs). Here we move from the prevailing
Wilkins, Lucas, Osorio, Daniel
openaire +3 more sources
Characterization of self-coloured doped zirconia for aesthetic dental application
International Dental Journal, 2023 Aim or Purpose: Co-doping of TZP ceramics with various colourant cations is investigated as a means of varying and controlling the optical properties, such as colour and translucency, of the ceramic.
Dr Reza Shahmiri
doaj +1 more source
La couleur du sel : un blanc thérapeutique ?
Pallas, 2021 Does the colour of salt play a part in its medical properties ? The effects of salt were well-known by the Ancients who considered it as a desiccating and antiseptic product, but have they a link with its chalky colour ?
Evelyne Samama
doaj +1 more source
Graph properties and hypergraph colourings
Discrete Mathematics, 1991 The paper gives new results in hypergraph chromatic theory via a graphic approach. The authors show that Dirac's conjecture (every vertex \(k\)- critical graph, \(k\geq 2\), has a critical edge) fails for hypergraphs.
Jason I. Brown, Derek G. Corneil
openaire +1 more source
Target recognitions in multiple camera CCTV using colour constancy [PDF]
, 2013 People tracking using colour feature in crowded scene through CCTV network have been a popular and at the same time a very difficult topic in computer vision.
Merfort, Christian +8 more
core +1 more source
Correlation Model Development for Saybolt Colour of Condensates and Light Crude Oils
ASM Science Journal, 2020 Saybolt colour or number is a measured physical property of petroleum condensates and light crude oils which can be used as a quality indicator. As an alternative approach to the laboratory-based colour measurement method, this work aims to determine the
Khor Cheng Seong +5 more
doaj +1 more source
Pigment Dyeing of Atmospheric Pressure Plasma-Treated Cotton Fabric
Applied Sciences, 2018 In this work, the effect of atmospheric pressure plasma treatment on improving the application of pigment dyeing in cotton was investigated. The colour-related properties such as (i) colour yield; (ii) colour levelness; (iii) crocking fastness; and (iv ...
Chi-Wai Kan, Wai-Shan Man
doaj +1 more source
Studies of antibacterial properties of banana fabric by dyeing with natural dyes [PDF]
Tekstilna industrija, 2023 Natural fibres, which are always biodegradable, organic, and non-toxic, find wide demand in technical textiles. Banana, a cellulosic fibre acquired from the banana plant, is a natural fibre that contributes to conserving the environment.
Das Subrata +3 more
doaj +1 more source
Chromatic properties of the colour-shading effect
Vision Research, 2005 The 'colour-shading effect' describes the phenomenon whereby chromatic variations affect the magnitude of perceived shape-from-shading in luminance patterns. A previous study showed that in mixed colour-plus-luminance sine-wave plaids, impressions of depth in the luminance component were enhanced by non-aligned chromatic components, and suppressed by ...
Kingdom, Frederick A.A. +2 more
openaire +2 more sources
Static and dynamic states: the case of Estonian stative colour expressions
Eesti ja Soome-ugri Keeleteaduse Ajakiri, 2012 The aim of this study is to account for stative situations through the example of structurally different but semantically close colour expressions: the Estonian stative verbs derived from colour adjectives and colour adjectives appearing as the ...
Geda Paulsen
doaj +1 more source