A

(redirected from A-ring)
Also found in: Dictionary, Thesaurus, Medical, Financial, Encyclopedia.

A, the first letter of the English and most other alphabets, is frequently used as an abbreviation, (q.v.) and also in the marks of schedules or papers, as schedule A, B, C, &c. Among the Romans this letter was used in criminal trials. The judges were furnished with small tables covered with wax, and each one inscribed on it the initial letter of his vote; A, when he voted to absolve the party on trial; C, when he was for condemnation; and N L, (non liquet) when the matter did not appear clearly, and be desired a new argument.

References in periodicals archive ?
It is aimed at enhancing the capacity of the A-Ring Road by increasing the number of its lanes from two to four lanes in each direction along the road length of about 6.7 km.
Three OH groups (5th, 6th, and 7th positions) at A-ring of baicalein have interaction with ASP189 and SER214 of thrombin by hydrogen bonds which are marked by deep green dotted lines on the 2D interaction diagram.
The tannin structures of the extractives are mainly procyanidin type, consisting of phloroglucinol A-ring, catechol B-ring, and pyrogallol B-ring.
B-ring hydroxyl groups could form hydrogen bond with 3-OH by aligning the B-ring with the heterocycle and A-ring. The elimination of this hydrogen bond causes a minor twist of the B-ring by compromising the electron delocalization capacity (van Acker et al.
While the runaway Claire remains in hiding, these and the rest of the novel's character ensemble circle dolefully about, employing and observing Danticat's signature tropes for the undervoiced Haitian people's dire-straits desire to be heard (also, for her own authorial determination to give them voice): radio stations, lighthouses, sign language, butterflies (whose fate is to be immemori ally/memorially both mute and beautiful), and wonns (a Haitian children's singing game similar to the English "Ring a-ring o' Roses").
Ion at m/z 225 was formed from m/z 269 due to the loss of CO2 from the A-ring for its two hydroxyl groups in the meta position [14, 15].
San Francisco, CA, January 16, 2012 --(PR.com)-- Aryng (A-ring), a San Francisco Bay Area based analytics training company, has announced its first public, Bay Area, analytics training workshop for business and analytics professionals.
Various flavonoids possessing isopentenyl side chains in the A-ring have been prepared and evaluated for their ability to bind estrogen receptor.
In the order Trochodendrales, the family Eupteleaceae produces flavonols and dihydroflavonols with free and protected hydroxyl groups in close percentages; Cercidiphyllaceae exhibit only dihydroflavonols with unprotected hydroxyl groups, but that order does not show transformation of the A-ring flavonoids (Table 2).
These structures were first inferred from Voyager studies of a curious A-ring property--a viewer sees the ring as slightly brighter toward the left front and right rear and dimmer in between.