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Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is produced via chain-growth polymerization from the monomer propylene. Polypropylene belongs to the group of polyolefins and is partially crystalline and non-polar. Its properties are similar to polyethylene, but it is slightly ...
- (C₃H₆)ₙ
- 0.855 g/cm³, amorphous, 0.946 g/cm³, crystalline
- None
- 130 to 171 °C (266 to 340 °F; 403 to 444 K)
Motherboard. A motherboard (also called mainboard, main circuit board, MB, mboard, backplane board, base board, system board, mobo, or, in Apple computers, logic board) is the main printed circuit board (PCB) in general-purpose computers and other expandable systems. It holds and allows communication between many of the crucial electronic ...
According to the Oxford English Dictionary, hello is an alteration of hallo, hollo, [1] which came from Old High German " halâ, holâ, emphatic imperative of halôn, holôn to fetch, used especially in hailing a ferryman". [5] It also connects the development of hello to the influence of an earlier form, holla, whose origin is in the French ...
High-density polyethylene ( HDPE) or polyethylene high-density ( PEHD) is a thermoplastic polymer produced from the monomer ethylene. It is sometimes called "alkathene" or "polythene" when used for HDPE pipes. [1] With a high strength-to-density ratio, HDPE is used in the production of plastic bottles, corrosion-resistant piping, geomembranes ...
Polyethylene terephthalate (or poly (ethylene terephthalate), PET, PETE, or the obsolete PETP or PET-P ), is the most common thermoplastic polymer resin of the polyester family and is used in fibres for clothing, containers for liquids and foods, and thermoforming for manufacturing, and in combination with glass fibre for engineering resins. [5]
Bhutan (/buːˈtɑːn/ ⓘ boo-TAHN; Dzongkha: འབྲུག་ཡུལ་, romanized: Druk Yul [ʈuk̚˩.yː˩]), officially the Kingdom of Bhutan (Dzongkha: འབྲུག་རྒྱལ་ཁབ་, romanized: Druk Gyal Khap),[14] is a landlocked country in South Asia situated in the Eastern Himalayas between China in the north and ...
Guallatiri is a stratovolcano in Chile that is 6,060–6,071 m (19,880–19,918 ft) high. It is located southwest of, or possibly within, the Nevados de Quimsachata volcanic group. The summit, surrounded by numerous fumaroles, may be a lava dome or volcanic plug, while the lower flanks of the volcano are covered by lava flows and lava domes.
