samples of air for analysis

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• air sampling — air sampling, the taking of samples of air for analysis, especially to count the pollen in it, or to analyze the amount of contamination from industrial wastes, fuel exhaust, or smoke, or to detect radioactive fallout …   Useful english dictionary

• analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… …   Universalium

• surface analysis — ▪ chemistry Introduction       in analytical chemistry (chemistry), the study of that part of a solid that is in contact with a gas or a vacuum. When two phases of matter are in contact, they form an interface. The term surface is usually… …   Universalium

• Hair analysis — is the chemical analysis of a hair sample. Hair may be considered for retrospective purposes when blood and urine are no longer expected to contain a particular contaminant, typically a year or less. [Eastern Research Group. [http://www.atsdr.cdc …   Wikipedia

• Mid-air retrieval — A helicopter with a long hook can catch a parachuting object in mid air, as seen here in a practice run for the planned retrieval of Genesis. Mid air retrieval is a technique used in atmospheric reentry when the reentering vehicle is incapable of …   Wikipedia

• Isotope analysis — is the identification of isotopic signature, the distribution of certain stable isotopes and chemical elements within chemical compounds. This can be applied to a food web to make it possible to draw direct inferences regarding diet, trophic… …   Wikipedia

• Bacteriological water analysis — is a method of analysing water to estimate the numbers of bacteria present and, if needed, to find out what sort of bacteria they are. It is microbiological analytical procedure which uses samples of water and from these samples determines the… …   Wikipedia

• 1968 Thule Air Base B-52 crash — A B 52G, similar to the one that crashed at Thule Air Base Accident summary Date …   Wikipedia

• Numerical analysis — Babylonian clay tablet BC 7289 (c. 1800–1600 BC) with annotations. The approximation of the square root of 2 is four sexagesimal figures, which is about six decimal figures. 1 + 24/60 + 51/602 + 10/603 = 1.41421296...[1] Numerical analysis is the …   Wikipedia

• Nanoparticle tracking analysis — (NTA) is a method for visualizing and analyzing particles in liquids that relates the rate of Brownian motion to particle size. The rate of movement is related only to the viscosity and temperature of the liquid, it is not influenced by particle… …   Wikipedia

• Sieve analysis — A sieve analysis is a practice or procedure used to assess the particle size distribution of a granular material. The size distribution is often of critical importance to the way the material performs in use. A sieve analysis can be performed on… …   Wikipedia