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Pennsylvania (/ ˌ p ɛ n s ɪ l ˈ v eɪ n i ə / ⓘ PEN-sil-VAY-nee-ə, lit. ' Penn's forest country '), officially the Commonwealth of Pennsylvania (Pennsylvania Dutch: Pennsylvanie), is a landlocked state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States.
Water-miscible oil paint (also called water-soluble oil paint or water-mixable oil paint) is oil paint either engineered or to which an emulsifier has been added, allowing it to be thinned and cleaned up with water. [1] [2] These paints make it possible to avoid using, or at least reduce volatile organic compounds such as turpentine that may be ...
Brackish water refers to aquatic environments that have a salinity in between salt and fresh water systems. Cleaning symbiosis has also been observed in these areas between two brackish water cichlids of the genus Etroplus from South Asia. The small species Etroplus maculatus is the cleaner fish, and the much larger Etroplus suratensis is the ...
Superhydrophobic coating. A superhydrophobic coating is a thin surface layer that repels water. It is made from superhydrophobic ( ultrahydrophobicity) materials, and typically cause an almost imperceptibly thin layer of air to form on top of a surface. Droplets hitting this kind of coating can fully rebound.
Paint is a material or mixture that, after applied to a solid material and allowed to dry, adds a film-like layer. As art, this is used to create an image, known as a painting. Paint can be made in many colors and types. Most paints are either oil-based or water-based, and each has distinct characteristics. Primitive forms of paint were used ...
Experimental pictures with "floating" [1] acrylic paint. Acrylic paint is a fast-drying paint made of pigment suspended in acrylic polymer emulsion and plasticizers, silicone oils, defoamers, stabilizers, or metal soaps. [2] Most acrylic paints are water-based, but become water-resistant when dry.
Cleaning station. A reef manta ray at a cleaning station, maintaining a near stationary position atop a coral patch for several minutes while being cleaned. A rockmover wrasse being cleaned by Hawaiian cleaner wrasses on a reef in Hawaii. Some manini and a filefish wait their turn. A cleaning station is a location where aquatic life congregate ...
The grey-crowned babbler ( Pomatostomus temporalis) is a species of bird in the family Pomatostomidae, the Australo-Papuan babblers. It is found in Australia, Indonesia, and Papua New Guinea. Its habitats include subtropical, tropical dry and tropical moist lowland forests and shrublands as well as savanna.