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Just prior to shedding, the skin becomes dull and dry looking and the snake's eyes turn cloudy or blue-coloured. The old layer of skin splits near the mouth and the snake wriggles out, aided by rubbing against rough surfaces. In many cases the cast skin peels backward over the body from head to tail, in one piece like an old sock.
Physically based rendering (PBR) is a computer graphics approach that seeks to render images in a way that models the lights and surfaces with optics in the real world. It is often referred to as "Physically Based Lighting" or "Physically Based Shading". Many PBR pipelines aim to achieve photorealism.
In zoology, a scale (Ancient Greek: λεπίς, romanized: lepís; Latin: squāma) is a small rigid plate that grows out of an animal's skin to provide protection. In lepidopterans ( butterflies and moths ), scales are plates on the surface of the insect wing , and provide coloration.
A protest sign referring to reptilian politicians. On September 12, 2003, during the provincial election campaign in Ontario, Canada, the Ernie Eves campaign issued a news release that called opponent Dalton McGuinty an "evil reptilian kitten-eater from another planet". [27] The words appeared at the end of the news release.
Skrulls, an alien race of reptilian shapeshifters; Slither, a snake-like mutant and ally of Magneto who has been a member of the Resistants and the Serpent Society; Stegron, a Stegosaurus-like enemy of Spider-Man; Zn'rx (Snarks), a race of reptilian aliens bipeds encountered by the Power Pack
PBr 3 + 3 (CH 3) 2 CHCH 2 OH → 3 (CH 3) 2 CHCH 2 Br + HP(O)(OH) 2. Several detailed procedures are available. [5] [6] In some cases, triphenylphosphine/Br 2 is superior to PBr 3. [7] The mechanism for a primary alcohol involves formation of a phosphorous ester (to form a good leaving group), followed by an S N 2 substitution. Because of the S ...
formula system space group unit cell Å volume density comment ref Ca 2 PBr : cubic I 4 3d: a=5.96 Z=2 red brown [1]Ca 2 PBr : hexagonal R 3 m: a=4.23 c=20.9 Z=3 [1]Cu 12 P 20 Br 10: triclinic
The hemipenis is the intromittent organ of Squamata, [4] which is the second largest order of vertebrates with over 9,000 species distributed around the world. They differ from the intromittent organs of most other amniotes such as mammals, archosaurs and turtles that have a single genital tubercle, as squamates have the paired genitalia remaining separate. [5]