Výsledky vyhledávání - "Pierre Froment"

Damien Brochier, Jean-Pierre Froment und Alain d'Iribarne, Die duale Ausbildung innerhalb der Produktion Bei der neueren Entwicklung des französischen Ausbildungssystems bildet die Entfaltung der dualen Ausbildungen zweifelsohne einen Wendepunkt fü

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc522e9639d55c6672d4f3abf9e6598d
https://www.persee.fr/doc/forem_0759-6340_1990_num_30_1_1381

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An Approach to the Determination of Functional Groups in Oxidized Lignins by19F Nmr

Autor: Dominique Lachenal, Michel Barrelle, Pierre Froment, Jean Claude Fernandes

Publikováno v: Journal of Wood Chemistry and Technology. 12:413-424

Derivatization of an oxidized lignin sample by suitable fluoroaromatic compounds is described. Integration of the 19F NMR spectra of the derivatives allows the determination of the carboxyl content of the sample. Three reagents were investigated : 4-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::910582968bafcaea5bf3a05c6626a9f7
https://doi.org/10.1080/02773819208545789

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La valeur du schéma cinématique en tant qu'artefact cognitif / The relevence of the kinematic scheme as a cognitive artefact

Autor: Jean-Pierre Froment

Publikováno v: Périodiques Scientifiques en Édition Électronique.

Objects and mechanisms are present throughout technology education. The study of their operating process requires the didatic use of various models. At issue are the theoretical and methodological conditions under which evaluating the relevance of a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcc4ea3a2fc5c573cac6550e94b9e139
https://www.persee.fr/doc/didas_1250-0739_2002_num_21_1_1136

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