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Form 20-F

In the USA, the form required by the Securities and Exchange Commission for the filing of annual results by non-US companies.

nuclear reaction

nuclear reaction   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

...reaction A reaction between *nuclides , expressed in the form: X i (P i , P o )X f , where X i and X f are the initial and final nuclides and P i and P o are the incoming and outgoing particle(s). Examples include: 14 N(α, p) 17 O 59 Co(n, γ) 60 Co 23 Na(γ, 3n) 20 Na 31 P(γ, pn) 29 Si, where p, n, α, and γ are symbols for the proton, neutron, alpha particle, and photon,...

Streptococcus

Streptococcus   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

... (no cap., not ital.; pl. streptococci ) . Adjectival form: streptococcal . Various systems of classifying streptococci are in use. A long-standing approach, based on the type of haemolytic reaction observed on blood agar, differentiates between α-, β- and γ-haemolytic streptococci ( see haemolysis ). Another well-established system, the Lancefield classification, classifies streptococci according to the serological reactivity of cell-wall polysaccharides. This identifies 20 or so distinct serogroups, each denoted by a capital letter; for...

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