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Non-plasticized (rigid) polyvinyl chloride (PVC) The following are "malignant" plastic materials that will age rapidly if left untreated, and which have a higher risk of off-gassing or releasing toxic materials that can damage surrounding objects: Polyvinyl chloride treated with plasticizers; Polyurethane
Cleaning symbiosis is a mutually beneficial association between individuals of two species, where one (the cleaner) removes and eats parasites and other materials from the surface of the other (the client). Cleaning symbiosis is well-known among marine fish, where some small species of cleaner fish, notably wrasses but also species in other ...
Pink algae. Pink algae is a growth of pink, slimey bacterial matter which can sometimes occur in pools and laboratory equipment. The name is a misnomer, because pink algae is not a true algae but is actually caused by a bacterium in the genus Methylobacterium. The color of the bacterial growth comes from pigments within its cells.
In November, the Commerce Department disclosed details of its plans to spend $3 billion in support of advanced packaging. The same month, Amkor Technology said it would spend $2 billion to build a ...
The conservation and restoration of vinyl discs refers to the preventive measures taken to defend against damage and slow degradation, and to maintain fidelity of singles, 12" singles, EP’s, and LP’s in 45 or 33⅓ rpm 10" disc recordings. Vinyl LP preservation is generally considered separate from conservation, which refers to the repair ...
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 ...
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