Wednesday, 15 September 2010
, primary colors
ed, blue, and yellow Schröder-Schräderand three children. 1 bed should be able to fit in the room in at least different positions 2 room should have direct water supply and drainage3 room should have a door that gave access to the outside. Rietveld a masterpiece attention to details, including
primary goal to distance herself from the ground and closer to light, sun, wind, and rain.
lines between interior and exterior to better connect with the changes . To , she decided superfluous components of the household experience must be peeled away.
kitchen a cooker, dishwasher, and washing troughocated the sitting/dining area of the floordumbwaiter. easy access to the exterior and cellar. third large spaceinitially designated to be a garage,
Color also contributes to the uniqueness of this house. The walls themselves feel like a canvas but each area is painted a certain color for specific reasons. For example, on the door there is an area painted black because it is likely the area that is accessed the most and therefore most likely to be soiled.
Fish scales are produced from the mesoderm layer of the dermis, which distinguishes them from reptile scales. The same genes involved in tooth and hair development in mammals are also involved in scale development.
The outermost layer is composed of vitrodentine, a largely inorganic enamel-like substance. Placoid scales cannot grow in size, but rather more scales are added as the fish increases in size.
were probably derived from a fusion of placoid scales.
Cosmoid scales increase in size through the growth of the lamellar bone layer.
Most are diamond-shaped and connected by peg-and-socket joints.
Cycloid and ctenoid scales
cycloid scales have smooth margins, while ctenoid scales have tiny teeth called ctenii on the posterior edge that give them a rough texture.
In flatfishes, some species have ctenoid scales on the eyed side and cycloid scales on the blind side, while other species have ctenoid scales in males and cycloid scales in females.
Ctenoid scales can be further subdivided into three types:
▪ In crenate scales, the margin of the scale bears indentations and projections.
▪ In spinoid scales, the scale bears spines that are continuous with the scale itself.
In "true" ctenoid scales, the spines on the scale are distinct structures.
Cycloid and ctenoid scales are overlapping, making them more flexible than cosmoid and ganoid scales. They grow in size through additions to the margin, creating bands of uneven seasonal growth called annuli (singluar annulus). These bands can be used to age the fish.