Vigna benuensissp. nov. from north Cameroon is described. It is closely related toVigna ambacensisvar.pubigera, but is amphicarpic and shows slight differences in floral morphology and size. Some important morphological features are compared with those of its allied species....
A polynucleotide phosphorylase with a molecular weight of 100,000 has been isolated from Escherichia coli Q13 mutant and partially purified. This mutant is particularly rich in this low molecular species which can, however, also be found in small proportion in wild strains of E. coli B and K12...
synthèse de rna stables dans une souche d'escherichia coli stringent pendant la carence en acide aminé spécifiqueNA synthesis does not stop and this result showed that RNA synthesis is not a coordinated process. Tdoi:10.1111/j.1432-1033.1970.tb00928.xGalibert F...
doi:10.17744/mehc.36.2.480168pxn63g8vkgKiara Alvarez
Beyssac, OlivierBeyssac O. 2001 . Les mécanismes de graphitisation à basse température: Une étude analytique et expérimentale sur des matériaux naturels et des molécules modèles . Ph.D. thesis , Laboratoire de Géologie, Ecole Nor...
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 ...
An exocellular proteolytic enzyme produced by Bacillus megaterium and called megateriopeptidase has been isolated and its specificity has been investigated. Megateriopeptidase has no exopeptidase activity: it splits neither the usual substrates of carboxypeptidase A (Bz-Gly-Phe and Bz-Gly-Leu), nor...
Koch, PatrickDjerassi, CarlLakshmi, VijaiSchmitz, Francis JWILEY‐VCH Verlag GmbHHelvetica Chimica ActaP. Koch, C. Djerassi, V. Lakshmi, F.J. Schmitz, Helv. Chim. Acta 66 , 2431–2436 (1983)Koch P, Djerassi C, Lakshmi V, Schmitz FJ. Helv. Chim. Acta. 1983; 66 :2431–2436. doi:...
The purification of the labelled actinomycine is achieved by formation of a complex with D N A. This complex carries a labelled by-product which is subsequently separated by thin layer chromatography.Parmi diverses conditions de tritiation de l'actinomycine-D, on obtient les activités spécifique...
The light intensity of a Hg vapour lamp transmitted by a filter has been measured with a potassium ferrioxalate actinometer. The spectral intensity distribution of the light was measured and corrections were applied for intensity loss and multiple reflexions. The quantum yield is given by Φ = I...