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Ion-exchange resin beads. An ion-exchange resin or ion-exchange polymer is a resin or polymer that acts as a medium for ion exchange, that is also known as an ionex. [1] It is an insoluble matrix (or support structure) normally in the form of small (0.25–1.43 mm radius) microbeads, usually white or yellowish, fabricated from an organic polymer substrate.
Various sized cuts of 1 ⁄ 2 in (13 mm) drywall with tools for maintenance and installation . Drywall (also called plasterboard, dry lining, [1] wallboard, sheet rock, gib board, gypsum board, buster board, turtles board, slap board, custard board, gypsum panel and gyprock) is a panel made of calcium sulfate dihydrate (), with or without additives, typically extruded between thick sheets of ...
Bead moulding: Narrow, half-round convex moulding, when repeated forms reeding; Beading or bead: Moulding in the form of a row of half spherical beads, larger than pearling. Other forms: Bead and leaf, bead and reel, bead and spindle; Beak: Small fillet moulding left on the edge of a larmier, which forms a canal, and makes a kind of pendant. [1]
Leominster (/ ˈ l ɛ m ə n s t ər / LEM-ən-stər) is a city in Worcester County, Massachusetts, United States.It is the second-largest city in Worcester County, with a population of 43,222 [3] at the 2023 census. [4]
Lath and plaster largely fell out of favour in the U.K. after the introduction of plasterboard in the 1930s. [2] In Canada and the United States, wood lath and plaster remained in use until the process was replaced by transitional methods followed by drywall (the North American term for plasterboard) in the mid-twentieth century. [citation needed]
Drywall, also known as plasterboard, is a building material typically consisting of gypsum-based plaster extruded between two thick sheets of paper and kiln-dried.. Drywall was imported by the United States during the construction boom between 2004 and 2007, spurred by a shortage of American-made drywall due to the rebuilding demand of nine hurricanes that hit Florida from 2004 to 2005, and ...
Due to its location in Central Massachusetts, Worcester is known as the "Heart of the Commonwealth"; a heart is the official symbol of the city. However, the heart symbol may also have its provenance in lore that the Valentine's Day card, although not invented in the city, was first mass-produced and popularized by Worcester resident Esther ...
Autoclave expansion is the most common route the bead foam. [4] Butane or pentane is often used as a blowing agent (before 1992 CFCs may have been used). Depending on the specific process uses the beads may be cross-linked either by electron beam irradiation (see Electron beam processing), or by the addition of a chemical agent such as dicumyl ...