The very high value of the degradation constant of this polycondensate is probably a result of the presence, in this chain, of the very flexible tetramethylene segment.doi:10.1002/macp.1978.021790909Devaux JaquesGodard PierreMercier Jean‐PierreHüthig & Wepf VerlagDie Makromolekulare Chemie...
– Introduction of a methyl group in position 4 (angular position) has a deshielding effect on the proton located on carbon 5 (opposite angular position). – The main results are summarized in table I and figure 1.Martin, R. H.Université Libre de Bruxelles, Service de Chimie Organique, ...
Yves-C. Gagnon est professeur à l‘École nationale d'administration publique de Montréal, Claude Provencher est chef de service Programmes administratifs au Conseil du Trésor du Gouvernement du Québec. Les auteurs remercient les évaluateurs anonymes pour leur précicuse contribution à cette ...
No abstract is available for this article.doi:doi:10.1111/1469-8676.12052_1Benveniste, AnnieSocial Anthropology
Hexamethylenetetramine is a very convenient buffer for the complexometric titration of the rare earth metal ions.doi:10.1002/hlca.19560390728Brunisholz GCahen RWILEY‐VCH Verlag GmbHHelvetica Chimica ActaG. Brunischolz and R. Cahen, Helv. Chim. Acta, 39: 324 (1956)....
These reactions are regiospecific and strongly stereoselective to give aminoketals or aminoacetals.doi:10.1002/jhet.5570200332Elzbieta Kozlowska-GramszGérard DescotesJournal of Heterocyclic Chemistry
ethanol and alcohol dehydrogenase (or glucose-6-phosphate and glucose-6-phosphate dehydrogenase) was coupled with non enzymatic reoxidation of pyridine nucleotides with phenazine methosulfate.Phenazine methosulfate reduced the non fluorescent compound, resazurine to the highly fluorescent compound, resorufine...
The faujasites which have undergone about 73% cation exchange and a programmed calcination gave the best performances. In the temperature range 350–500掳C, the toluene conversion was about 20–60 mol. The NaLaY catalysts are slightly more active than those containing cerium, but the latter ...
In contrast to the effect of LH, none of the other preparations (FSH, LH-RH, or hCG) produced atresia. LH-RH alone caused a delayed ovulation.doi:10.1016/0016-6480(81)90011-3Arranz FGalin J. CGeneral & Comparative Endocrinology
Applications de la Spectrographie de R茅sonance Magn茅tique Nucl茅aire (R.M.N.) Dans le Domaine des D茅riv茅s Polycycliques A Caract猫re Aromatique IV. D茅riv茅s mono et bisubstitu茅s du dibenzo [g, p] chrys猫ne, benzo [a] ph茅nanthro [9,10-c] napthac猫ne-14,19-quinone ...