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2. R-value (insulation) - Wikipedia

   en.wikipedia.org/wiki/R-value_(insulation)

   For comparison, phenolic foam insulation has a k-value of around 0.018 W/(m⋅K), [23] while wood varies anywhere from 0.15 to 0.75 W/(m⋅K), and steel has a k-value of approximately 50.0 W/(m⋅K). These figures vary from product to product, so the UK and EU have established a 90/90 standard which means that 90% of the product will conform to ...

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4. Polyisocyanurate - Wikipedia

   en.wikipedia.org/wiki/Polyisocyanurate

   The generalised chemical structure of polyisocyanurate showing the isocyanurate group. The polyols are abbreviated as R-groups.. Polyisocyanurate (/ ˌ p ɒ l ɪ ˌ aɪ s oʊ s aɪ ˈ æ nj ʊər eɪ t /), also referred to as PIR, polyol, or ISO, is a thermoset plastic [1] typically produced as a foam and used as rigid thermal insulation.

5. Evaporative-pattern casting - Wikipedia

   en.wikipedia.org/wiki/Evaporative-pattern_casting

   The most common evaporative-pattern material used is polystyrene foam. [1] The two major evaporative-pattern casting processes are: [1] Lost-foam casting; Full-mold casting; The main difference is that lost-foam casting uses an unbonded sand and full-mold casting uses a bonded sand (or green sand). Because this difference is quite small there ...

6. Engineering drawing abbreviations and symbols - Wikipedia

   en.wikipedia.org/wiki/Engineering_drawing...

   1. Center line, the central axis of a feature. 2. Class, for example, "paint per spec XYZ revision C type 1 class 2" may be abbreviated as "paint per spec XYZ REV C TY 1 CL 2" or even in some cases "paint per spec XYZ-C-1-2". (The latter practice is not uncommon but is cryptic for workers with minimal training and experience. The first two ...

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8. ‘Mrs. Doubtfire’ Star Harvey Fierstein Shares How He Lost 120 ...

   www.aol.com/mrs-doubtfire-star-harvey-fierstein...

   Actor and playwright Harvey Fierstein is sharing how he lost 120 pounds. The 70-year-old told Page Six that his weight has always fluctuated, and weight loss medication, he added, has helped him ...

9. Xanadu Houses - Wikipedia

   en.wikipedia.org/wiki/Xanadu_Houses

   Repeated spraying produced a five-to-six-inch-thick structurally sound shell within a few hours. Once the foam cured, the plastic balloon form was removed to be used again. Once the second dome was completed and the balloon form removed, the two rooms were joined by wire mesh which was also sprayed with foam to form a connecting gallery or hall.