منابع مشابه
Inception of standards for internal emitters, radon and radium.
THERE are three basic radiation protection standards which have their roots in observations on man. The detailed guidance for various situations of radiation exposure is derived in several ways from these three basic standards, or bench marks. The three basic standards are: (1) for external X-rays and y-rays, (2) for internal emitters, specifically radium, and (3) for inhaled radioactive aeroso...
متن کاملNational Institute of Standards & Technology
This Standard Reference Material (SRM) is a primary transfer standard certified using a national reference spectrophotometer at NIST [1-3]. SRM 2930 is complementary to SRM 930e and SRM 1930, providing levels of transmittance/absorbance that extend the range covered by those SRMs. It is intended for use in the verification of the transmittance and absorbance scales of spectrophotometers in the ...
متن کاملNational Institute of Standards & Technology
This Standard Reference Material (SRM) is intended primarily for use in the development and validation of analytical methods for the determination of cholesterol, fat-soluble vitamins, fat, and fatty acids in a lipid matrix. SRM 1563 consists of ten ampoules per unit: five ampoules of natural coconut oil (1563-1) and five ampoules of fortified coconut oil (1563-2). Each ampoule contains approxi...
متن کاملNational Institute of Standards & Technology
This Standard Reference Material (SRM) is a frozen fish tissue homogenate that was prepared from fish collected from Lake Michigan, and is intended primarily for use in evaluating analytical methods for the determination of selected trace elements, methylmercury, total mercury, polychlorinated biphenyl (PCB) congeners, chlorinated pesticides, polybrominated diphenyl ether (PBDE) congeners, perf...
متن کاملNational Institute of Standards & Technology
This Standard Reference Material (SRM) is intended for the verification and calibration of spectrophotometers used to measure the concentration of Solvent Red dyes employed as colorants to mark “off-road” diesel fuel. SRM 2037 is certified for the purity of the Solvent Red 24 Dye (C24H20N4O, molecular mass 380.45) and for the secondderivative-based molecular absorption coefficients (extinction ...
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ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards
سال: 1957
ISSN: 0091-0635
DOI: 10.6028/jres.058.023