thermal insulation board
41Wood drying — (also seasoning lumber or timber seasoning) refers to reducing the moisture content of wood prior to its use. For some purposes wood is not dried at all (it is used green ) [http://en.wikipedia.org/wiki/Green wood] . Often the wood needs to be in …
42Soundproofing — is any means of reducing the intensity of sound with respect to a specified source and receptor. There are several basic approaches to reducing sound: increasing the distance between source and receiver, using noise barriers to block or absorb… …
43Duvet — For the song by Bôa, see The Race of a Thousand Camels. A duvet, without a cover. A duvet (pronounced UK: /ˈduːveɪ/, US: /duːˈveɪ/) (also known as a doona in Australian English and a dyne in Scandinavian from which the Australian wo …
44Compressed-air energy storage — (CAES) refers to the compression of airto be used later as energy source. At utility scale, it can be stored during periods of low energy demand (off peak), for use in meeting periods of higher demand (peak load). Alternatively it can be used to… …
45September 11 attacks — September 11 attacks …
46FETCH! with Ruff Ruffman — is a children s television series on PBS during the PBS Kids GO! block of educational programming. It is a game show/reality show parody that is hosted by an animated anthropomorphic dog who dispenses challenges to the show s real life… …
47Sputnik 2 — Infobox Spacecraft Name = Sputnik 2 Organization = Soviet Union Major Contractors = OKB 1 Mission Type = Earth Science Satellite Of = Earth Launch = November 3, 1957 at 02:30:00 UTC Launch Vehicle = R 7/SS 6 ICBM Decay = April 14, 1958 Mission… …
48Mars 2 — Orbiter Operator USSR Mission type Orbiter and lander Orbital insertion date November 27, 1971 …
49Mars 3 — Orbiter Mars 3 Orbiter Operator  Soviet Union …
50Ring circuit — In electricity supply, a ring final circuit or ring circuit (informally also ring main or just ring) is an electrical wiring technique developed and primarily used in the United Kingdom that provides two independent conductors for live, neutral… …
