doi:10.1002/bjs.18005022040NoneJohn Wiley & Sons, Ltd.British Journal of Surgery
Evidence for the existence of cis and trans isomers, whose structures were determined by study of long range coupling, is given by N.M.R. spectroscopy. A correlation with sarpaginelike indole alkaloids has been established and a simple rule for the determination of the configuration of the ...
leukemiaThe rhône valley was always a major route for humans between northern europe and mediterranean sea. Located in its middle part, the southern ardèche preserves remains of this activity. The saint-remèze plateau and ardèche canyon offered shelters and resources to the populations which ...
André, J. MUniversité Catholique De Louvain Laboratoire de Chimie Quantique (Dir.: G. Leroy) Kapeldreef Egenhoven‐Heverlee (BelgiumDelhalle, JUniversité Catholique De Louvain Laboratoire de Chimie Quantique (Dir.: G. Leroy) Kapeldreef Egenhoven‐Heverlee (BelgiumLeroy, G...
Afterwards, considering the importance of this field of research, several works succeeded to develop a rectenna made up of a reception antenna followed of a system of rectification in order to improve the conversion efficiency AC-DC. This improvement is due primarily to the Schottky...
A penta-2,4-dienylphosphine oxide is easily obtained by reaction of methylmagnesium iodide with 1-oxa-2-phosphacyclo-hepta-4,6-diene followed by two more intermediate steps. The corresponding phosphine may be obtained either by trichlorosilane reduction of the oxide or nickelocene reduction–...
The convergentsynthesis of the ethyl ended surfactants is based on a one-pot reduction/alkylation of hemifluorinated thioacetate and glucosylated trishydroxymethyl acrylamidomethane (THAM) using NaBH4 in methanol. This "mild" alkylation was studied in order to improve yields and to pass up the use ...
The protoplasm of adult laticifers is densely packed with rubber particles.Charles HébantCanadian Journal of BotanyC Hebant,C Devic,E Fay.Ontogenie des laticiferes du systeme primaire de l’Hevea brasiliensis: une etude ultrastructurale et cytochimique.Canadian Journal of Botany. 1981...
margaritifera, suggest a genetic programming of the female sex, which however remain subject to environmental conditions, thus validating the hypothesis of a mixed sex determinism mode in P. margaritifera.S LustigS ParratteElsevier Masson
Fuger, J. (1957), Contribution à L'Étude de la Séparation des Terres Rares par L'Acide Éthylènediaminetetraacetique. Bull. Soc. Chim. Belges, 66: 151–168. doi: 10.1002/bscb.19570660112 Author Information Laboratoire de Chimie Analytique, Université de Liège (Prof. G. DUYCKAERTS) ...