dust handling
41Textile preservation — refers to the processes by which textiles are cared for and maintained to be preserved from future damage. The field falls under the category of art conservation as well as library preservation, depending on the type of collection. In this case,… …
42metalwork — metalworker, n. /met l werrk /, n. objects made of metal. [1840 50; METAL + WORK] * * * Useful and decorative objects fashioned of various metals. The oldest technique is hammering. After с 2500 BC, casting was also used, molten metal being… …
43Chevrolet Corvair — 1965 Chevrolet Corvair Corsa Hardtop Coupe Manufacturer Chevrolet Division of General Motors Production 1959–1969 …
44Rudy Giuliani — Giuliani in 2006 107th Mayor of New York City In office January 1, 1994 – December 31, 2001 Preceded by …
45Phoenix (spacecraft) — This article is about the Mars lander. For the Star Trek spacecraft, see Phoenix (Star Trek). For other uses, see Phoenix (disambiguation). Phoenix Mars Mission Artist s impression of the Phoenix spacecraft as it lands on Mars Operator NASA …
46Occupational hygiene — Occupational (or industrial in the U.S.) hygiene is generally defined as the art and science dedicated to the anticipation, recognition, evaluation, communication and control of environmental stressors in, or arising from, the workplace that may… …
47Sodium azide — Sodium azide …
48List of Doctor Who universe creatures and aliens — This is a list of fictional creatures and aliens from the universe of the long running BBC science fiction television series Doctor Who, including Torchwood, The Sarah Jane Adventures and K 9. It covers alien races and other fictional creatures,… …
49Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
50respiratory disease — ▪ human disease Introduction any of the diseases and disorders that affect human respiration (respiration, human). Diseases of the respiratory system may affect any of the structures and organs that have to do with breathing, including the… …
