876 resultados para Paradigme de double tâche


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This thesis describes the chemoenzymatic synthesis of three morphine alkaloids. The total synthesis of dihydrocodeine and hydrocodone was accomplished starting from bromobenzene in 16 and 17 steps, respectively. The key steps included a microbial oxidation of bromobenzene by E. coli JM109 (pDTG601A), a Kazmaier-Claisen rearrangement of glycinate ester to generate C-9 and C-14 stereo centers, a Johnson-Claisen rearrangement to set the C-13 quaternary center, and a C-10/C-11 ring closure via a Friedel-Crafts reaction. In addition, the total synthesis of ent-hydromorphone starting from β-bromoethylbenzene in 12 steps is also described. The key reactions included the enzymatic dihydroxylation of β-bromoethylbenzene to the corresponding cis-cyclohexadienediol, a Mitsunobu reaction, and an oxidative dearomatization followed by an intramolecular [4+2] cycloaddition.

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The summary of the article reads "A new double rail conveyor restrainer for handling cattle at the slaughter plant is described. It has improved safety and ergonomics compared to the V restrainer conveyor it replaces. Cattle ride astride a moving conveyor. This design could also be adapted for veterinary work."

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Examination of Henry Nelles (2 double-sided pages, handwritten). The pages are stained and contain some holes. This affects some of the text. [These are copies of the answers from the previous document], 1830.

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Questions and answers of W. Henry Griffen (2 double-sided pages, handwritten). These pages are stained and slightly torn. This affects a small portion of the text, 1830.

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Questions put to Edwards [illegible] (2 double-sided pages, handwritten).These pages are stained and slightly torn. This affects a small portion of the text, 1830.

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UANL

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Daniel Mockle, Professeur, Directeur, Département des sciences juridiques, Faculté de science politique et de droit, UQAM

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Un résumé en anglais est également disponible.

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Un résumé en anglais est également disponible.

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"Thèse présentée à la Faculté des études supérieures en vue de l'obtention du grade de Docteur en droit (LL.D.)"

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"Mémoire présenté à la faculté des études supérieures en vue de l'obtention du grade de maîtrise en droit (LL.M.)"

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"Mémoire présenté à la Faculté des études supérieures en vue de l'obtention du grade de maîtrise en droit (LL.M) option recherche"

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