نتایج جستجو برای: 5 components including color diversity
تعداد نتایج: 2603349 فیلتر نتایج به سال:
Melanin is the most pervasive and widespread pigment in living organisms and creates a broad range of black, brown and grey colors. Melanin possesses an intriguing set of physical and chemical properties including broadband monotonic absorbance, extremely low radiative quantum yield, and surprising condensed-phase electrical and photoconductive properties. This has led to the suggestion that me...
Linking species and ecosystems often relies on approaches that consider how the traits exhibited by species affect ecosystem processes. One method is to estimate functional diversity (FD) based on the dispersion of species in functional trait space. Individuals within a species also differ, however, and an unresolved challenge is how to include such intraspecific variability in a measure of fun...
The study of color polymorphisms (CP) has provided profound insights into the maintenance of genetic variation in natural populations. We here offer the first evidence for an elaborate wing polymorphism in the Neotropical damselfly genus Polythore, which consists of 21 described species, distributed along the eastern slopes of the Andes in South America. These damselflies display highly complex...
The evolution of Müllerian mimicry is, paradoxically, associated with high levels of diversity in color and pattern. In a mimetic radiation, different populations of a species evolve to resemble different models, which can lead to speciation. Yet there are circumstances under which initial selection for divergence under mimicry may be reversed. Here we provide evidence for the evolution of exte...
Multispectral images (0.44 to 0.98 μm) of asteroid (4) Vesta obtained by the Dawn Framing Cameras reveal global color variations that uncover and help understand the north-south hemispherical dichotomy. The signature of deep lithologies excavated during the formation of the Rheasilvia basin on the south pole has been preserved on the surface. Color variations (band depth, spectral slope, and eu...
In many applications of color technology such as spectral color reproduction it is of interest to represent the spectral data with lower dimensions than spectral space’s dimensions. It is more than half of a century that Principal Component Analysis PCA method has been applied to find the number of independent basis vectors of spectral dataset and representing spectral reflectance with lower di...
The diversity of color results from the diversity of surfaces which absorb the light – Ulrich von Strassburg (1262)
Color transparency is an important tool to investigate exclusive processes using nuclear targets. The earliest predictions of the phenomenon, going back to 1982, were based on having asymptotically large Q select short distance. Given the difficulties over short-distance dominance, the transition to color transparency then multiplied the controversy. However the discovery of nuclear filtering s...
silvicultural operation need to notice the plant species diversity in forest. to this study gomarlang district in marivan region, northern zagros forest was selected. selected 100 ha area because have similar physiography condition (north aspect and 1650 to 1800 m s.a.l. in study area 100 micro plots of 5m by 5 m (25 m2) including the species and the numbers of this species randomized-systemati...
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