Results 21 to 30 of about 136,487 (304)

Parental phenotype not predator cues influence egg warning coloration and defence levels [PDF]

open access: yes, 2018
In species that advertise their toxicity to predators through visual signals, there is considerable variation among individuals in both signal appearance and levels of defence.
Paul, S.   +5 more
core   +2 more sources

Color patterns of the hermit crab Calcinus tibicen (Herbst, 1791) fail to indicate high genetic variation within COI gene

open access: yesNauplius, 2018
Apart from traditional characters, other data have been used for taxonomy, like color patterns. Based on the different colors (green and orange) observed for some Calcinus tibicen (Herbst, 1761) specimens, we evaluated the genetic distance for cytochrome
Silvia Sayuri Mandai   +2 more
doaj   +1 more source

Between coloring and list-coloring: μ-coloring

open access: yesElectronic Notes in Discrete Mathematics, 2005
A new variation of the coloring problem, μ-coloring, is defined in this paper. A coloring of a graph G = (V,E) is a function f : V → N such that f(v) 6= f(w) if v is adjacent to w. Given a graph G = (V,E) and a function μ : V → N, G is μ-colorable if it admits a coloring f with f(v) ≤ μ(v) for each v ∈ V .
Flavia Bonomo, Mariano Cecowski Palacio
openaire   +3 more sources

Color Portraits [PDF]

open access: yesProceedings of the 33rd Annual ACM Conference on Human Factors in Computing Systems, 2015
Although ubiquitous, color pickers have remained largely unchanged for 25 years. Based on contextual interviews with artists and designers, we created the Color Portraits design space to characterize five key color manipulation activities: sampling and tweaking individual colors, manipulating color relationships, combining colors with other elements ...
Jalal, Ghita   +2 more
openaire   +3 more sources

Saccharomyces cerevisiae Concentrates Subtoxic Copper onto Cell Wall from Solid Media Containing Reducing Sugars as Carbon Source

open access: yesBioengineering, 2021
Copper is essential for life, but it can be deleterious in concentrations that surpass the physiological limits. Copper pollution is related to widespread human activities, such as viticulture and wine production. To unravel aspects of how organisms cope
Lavinia L. Ruta, Ileana C. Farcasanu
doaj   +1 more source

Coloration in Supraparticles Assembled from Polyhedral Metal‐Organic Framework Particles [PDF]

open access: yes, 2022
Supraparticles are spherical colloidal crystals prepared by confined self‐assembly processes. A particularly appealing property of these microscale structures is the structural color arising from interference of light with their building blocks. Here, we
Michael Engel   +24 more
core   +1 more source

Protective Coloration of Eggs

open access: yes, 1890
PROTECTIVE COLORATION OF EGGS Protective Coloration of Eggs (42) (-
Titchener, Edward B.
core   +3 more sources

Ontogeny of color development in two green–brown polymorphic grasshopper species

open access: yesEcology and Evolution, 2023
Many insects, including several orthopterans, undergo dramatic changes in body coloration during ontogeny. This variation is particularly intriguing in gomphocerine grasshoppers, where the green and brown morphs appear to be genetically determined ...
Mahendra Varma   +3 more
doaj   +1 more source

The thermal implications and ecological consequences of coloration in selected species : tenebrionid beetles (Onymacris bicolor and Onymacris ungui cularis), Cape gannets (Morus capensis) and Cape cormorants (Phalacrocorax capensis) [PDF]

open access: yes, 1989
Bibliography: leaves 176-192.The thermal significance of coloration was investigated in two species of Namib Desert tenebrionid beetles and two species of marine birds.
Lombard, Amanda T
core   +1 more source

Investigation of Color Causing Minerals in Yellow-Red Colored Quartzite Jade Using the Synchrotron Radiation Technique

open access: yesYankuang ceshi, 2016
Jade-like cryptocrystalline-microcrystalline vein quartzite is called quartzite jade in the jewel business of China. Color is the main criteria for the value of quartzite jade, and therefore studying the coloration mechanism is very important for the ...
ZHANG Yong   +4 more
doaj   +1 more source

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