Sieve cells are very uniform and have an even distribution across of sieve areas. The word colander comes from the Latin "colum" meaning "sieve". In the case of oxygen generation a zeolite-based sieve forces preferential adsorption for nitrogen. These porous connections are called sieve plates. The liquid honey from the destroyed brood nest was strained through a sieve or basket. Zeolites are also used as a molecular sieve in cryosorption style vacuum pumps. Hydrometer analysis is performed if the grain sizes are too small for sieve analysis. The mesh in a wooden sieve might be made from wood or wicker. The vegetables are blanched, then rubbed through a sieve and kvass is poured over. The factorization was found using the Multiple Polynomial Quadratic Sieve algorithm. The third sieve is the sand unit. A Tatar variety was strained through a fine sieve, which helped keep apple seeds intact. See the separate Mesh (scale) page for details of sieve sizing. Providing continuous flow requires a larger molecular sieve and pump/motor assembly, and additional electronics. They are very long and have horizontal end walls containing sieve plates.