What's the difference between quartern and quarteron?
Quartern
Definition:
(n.) A quarter. Specifically: (a) The fourth part of a pint; a gill. (b) The fourth part of a peck, or of a stone (14 ibs.).
(n.) A loaf of bread weighing about four pounds; -- called also quartern loaf.
Example Sentences:
(1) Combining the present results with X-ray crystallographic data on the adenine--and guanine--aromatic amino acid interactions, we summarize the structural characteristics observed in the stacking interaction of the N-quarternized nucleic acid base with the aromatic amino acid and discuss their biological implications, especially in connection with the significance of N-protonation of nucleic acid base for selective recognition by protein.
(2) In order to investigate the mode of interaction between the N-quarternized cytosine base and the aromatic amino acid, the crystal structure of the 3-methyl-cytidine-5'-monophosphate:tryptamine complex was analyzed by X-ray diffraction.
(3) A new antithrombogenic polymer was synthesized by photoinduced graft copolymerization of both a hydrophilic polymer and a cationic polymer to hydrophobic poly (vinyl chloride) copolymer, and by quarternizing and heparinizing the obtained graft copolymer.
(4) Starting from metacaine (ethyl m-aminobenzoate), derivatives of different basicity were produced by N-dimethylization, N-quarternization and by preparing a corresponding aliphatic amine.
(5) 5-HT3 receptor antagonists competed for [3H]-quipazine binding with high nanomolar affinities in the three preparations and the rank order of affinity was: (S)-zacopride > quarternized ICS 205-930 2 granisetron > ondansetron > ICS 205-209 (R)-zacopride > quipazine > renzapride > MDL-72222 > butanopride > metoclopramide.
Quarteron
Definition:
(n.) A quarter; esp., a quarter of a pound, or a quarter of a hundred.