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Leucocoprinus birnbaumii, commonly known as the flower pot parasol, yellow parasol, [2] flowerpot parasol, or plantpot dapperling, is a species of gilled mushroom in the family Agaricaceae. It is common in the tropics and subtropics.
The point is positioned very near or contacting the plate. A source of high voltage such as a Leyden jar (a type of capacitor) or a static electricity generator is applied to the needle, typically through a spark gap. This creates a sudden, small electrical discharge along the surface of the plate. This deposits stranded areas of charge onto ...
The process of pit nucleation is initiated by the depassivation of the protective oxide layer isolating the metal substrate from the aggressive solution. The depassivation of the protective oxide layer is the less properly understood step in pitting corrosion and its very local and random appearance probably its most enigmatic characteristic.
A fitting or adapter is used in pipe systems to connect sections of pipe (designated by nominal size, with greater tolerances of variance) or tube (designated by actual size, with lower tolerance for variance), adapt to different sizes or shapes, and for other purposes such as regulating (or measuring) fluid flow.
The corrosion rate of copper in most potable waters is less than 2.5 μm/year, at this rate a 15 mm tube with a wall thickness of 0.7 mm would last for about 280 years. [2] In some soft waters the general corrosion rate may increase to 12.5 μm/year, but even at this rate it would take over 50 years to perforate the same tube.
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Aplysina archeri, also known as a stove-pipe sponge because of its shape, is a species of tube sponge that has long tube-like structures of cylindrical shape. Although they can grow in a single tube, they often grow in large groups of up to 22 tubes. [2] A single tube can grow up to 5 feet (1.5 m) high and 3 inches (7.6 cm) thick.
Aristolochia (English: / ə ˌ r ɪ s t ə ˈ l oʊ k i ə /) is a large plant genus with over 500 species that is the type genus of the family Aristolochiaceae.Its members are commonly known as birthwort, pipevine or Dutchman's pipe and are widespread and occur in the most diverse climates.