The rates of reaction of 2-, 3- and 4-chloropyridine N-oxides towards 1 M piperidine in methanol have been measured conductimetrically. Apparent unimolecular rate constants at 80掳C are respectively 3,70.10 4 , 1,04.10 7 and 1,02.10 4 sec 1 . The reactivity sequence 2 > 4 >> 3 is...
La substitution nucléophile activée en série aromatique II.—Effet polaire des groupements alcoyle-Réaction d'échange bromo-iode dans une série de 1-alcoyl-4-bromo-3,5-dinitro-benzènes Mlle A. Pinguair, P. J.C Fierens†, A. Frennet and A. Halleux Article first published onlin...
One of its most common risk factors is xeroderma pigmentosum (XP), an autosomal recessive disease characterized by defective cellular DNA repair, and hypersensitivity to ultraviolet radiation. Case report We report a case of XP in a 7-year-old black African boy, revealed by squamous cell ...
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The aim of this dissertation is the analysis of a French manuscript of the Légende Dorée, written at the end of the 13th century by the Dominican Jacques de Voragine and translated into French before 1348 by Jean de Vignay. This manuscript is number 266 in the Bibliothèque Municipale of ...
En este trabajo se realiza una revisión de las contribuciones realizadas en el ámbito de la psicología social al estudio de la satisfacción de los usuarios y consumidores. En concreto, se constata que la investigación se ha realizado predominantemente desde acercamientos cognitivos (confirmaci...
placement en CAO]]>Constraint satisfaction problems (CSP) are a powerfull framework in formalization of artificial intelligence problems. A CSP is given by a set of variables defined on specific domains, and a set of constraints on these variables. Many technics had been defined to solve them....
Finally, results obtained in collaboration with the Institut d’Optique in Palaiseau are presented. The goal is to study the bacterial ribosome by single-molecule fluorescence spectroscopy.Nail surgeryBibliogr
This result agrees with the proposal that preferential equatorial attack of a nucleophile is caused by conformational factors related to a steroid non-steroid conformation equilibrium in thecis-isomers.[Journal Translation]C. AgamiT. RizkR. DurandP. Genestecanadian journal of chemistry...
The latest part of this paper deals with the construction ofP–Ylateral reaction curves and the variation of the horizontal subgrade modulus with the number of cycles.Key words: pile, centrifuge, sand, cyclic loading, density, roughness.Ali Bouafiacanadian geotechnical journal...