The phrase "a rings" is not correct in written English.
It is incorrect because "rings" is a plural noun and should not be preceded by the singular article "a."
Example: "I bought a ring for my sister's birthday."
Alternatives: "a ring" or "one ring."
Next month, the 950-pound bronze bell -- where an A rings out before 9 a.m. liturgy (in English and Slavonic) at the push of a button each Sunday -- is to be suspended temporarily in midair so its housing can be repaired.
NO, GEORGIA -- A "Rings" contingent at last year's Dragon*Con parade in Atlanta.
The ring system begins from the inside out with the D, C, B and A rings followed by the F, G and E rings.
Three of the author's children declined to attend the premiere of "The Lord of the Rings: The Fellowship of the Ring," and they resisted Mr. Jackson's plan to put the movies' props in a "Rings" museum, arguing that display of the artifacts was permitted only during promotion of the films.
Jin, J. et al. Fluostatins M-Q featuring a 6-5-6-6 6-5-6-6 6-5-6-6 6-5-6-6oxidized A-ringskeletonandne Streptomyces sp. PKU-MA00045.
In addition, 1, 3, 4-trisubstituted phenyls in A-ring compound 1, instead of 1, 4-disubstituted aromatic A-rings in the above-mentioned glycoside.
The rings generated by ProcM contain very different numbers of amino acids, from four residues in the A-rings of Pcn1.7 and Pcn4.3 to 11 residues in the A-ring of Pcn3.3.
In designing the study, we noted that both enzalutamide and ARN-509 share identical A-rings with bicalutamide and its derivative S1 that were respectively cocrystallized with the LBD of AR W741L and AR WT in agonist conformations (PDB ID 1Z95 and 2AXA) (Bohl et al., 2005a, 2005b).
Other structural features that seem to play a role in the induction of GST activity are the A and A' rings, and modification to the B ring in limonoids [ 9, 21].
This was attributed to the fact that the structure of limonin is composed of intact A and A' rings.
There is a ring within a ring.
