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Alpha diversity — (α diversity) is the biodiversity within a particular area, community or ecosystem, and is usually expressed as the species richness of the area.[1] This can be measured by counting the number of taxa (distinct groups of organisms) within the… … Wikipedia
Alpha-particle spectroscopy — One method for testing for (and measuring) many alpha emitters is to use alpha particle spectroscopy. For methods for gamma rays and beta particles, please see gamma spectroscopy and liquid scintillation counting respectively. Experimental… … Wikipedia
DEC Alpha — Alpha Designer Digital Equipment Corporation Bits 64 bit Introduced 1992 Design RISC Type Register Register Encoding Fixed … Wikipedia
Moreau's necklace-counting function — In combinatorial mathematics, Moreau s necklace counting function:M(alpha,n)={1over n}sum {d,|,n}muleft({n over d} ight)alpha^dwhere μ is the classic Möbius function, counts the number of necklaces asymmetric under rotation (also called Lyndon… … Wikipedia
Polonium — (] [cite journal author = Momoshima N., Song L.X., Osaki S.,Maeda Y., title = Biologically induced Po emission from fresh water journal =J Environ Radioact. year = 2002 volume = 63 issue = 2 pages = 187–197 doi =10.1016/S0265 931X(02)00028 0]… … Wikipedia
Ben Silburn — (born 26 September 1968, Nottinghamshire, UK) is a British television presenter, radio presenter and comedy writer. Television and Radio On television he has presented on BBC programmes including Click Online and Fast Track . On radio he presents … Wikipedia
Potassium pyrosulfate — chembox new ImageFile=Potassium pyrosulfate.png ImageSize= IUPACName= OtherNames= Section1=Chembox Identifiers CASNo= PubChem=62681 SMILES= [O ] S(=O)(=O)OS(=O)(=O) [O ] . [K+] . [K+] Section2=Chembox Properties K = 2 | O = 7 | S = 2 Appearance=… … Wikipedia
метод α-счета в определенном телесном угле — метод α счета в определенном телесном угле Метод измерения активности источников альфа излучающих нуклидов, осуществляемый в вакууме с помощью альфа счетчика, регистрирующего частицы, испускаемые источником внутри телесного угла, заданного… … Справочник технического переводчика
radiation measurement — ▪ technology Introduction technique for detecting the intensity and characteristics of ionizing radiation, such as alpha, beta, and gamma rays or neutrons, for the purpose of measurement. The term ionizing radiation refers to those… … Universalium
Binomial coefficient — The binomial coefficients can be arranged to form Pascal s triangle. In mathematics, binomial coefficients are a family of positive integers that occur as coefficients in the binomial theorem. They are indexed by two nonnegative integers; the… … Wikipedia
New Foundations — In mathematical logic, New Foundations (NF) is an axiomatic set theory, conceived by Willard Van Orman Quine as a simplification of the theory of types of Principia Mathematica. Quine first proposed NF in a 1937 article titled New Foundations for … Wikipedia