585 research outputs found
On the automorphism groups of q-enveloping algebras of nilpotent Lie algebras
No full textWe investigate the automorphism group of the quantised enveloping algebra U of the positive nilpotent part of certain simple complex Lie algebras g in the case where the deformation parameter q \in \mathbb{C}^* is not a root of unity. Studying its action on the set of minimal primitive ideals of U we compute this group in the cases where g=sl_3 and g=so_5 confirming a Conjecture of Andruskiewitsch and Dumas regarding the automorphism group of U. In the case where g=sl_3, we retrieve the description of the automorphism group of the quantum Heisenberg algebra that was obtained independently by Alev and Dumas, and Caldero. In the case where g=so_5, the automorphism group of U was computed in [16] by using previous results of Andruskiewitsch and Dumas. In this paper, we give a new (simpler) proof of the Conjecture of Andruskiewitsch and Dumas in the case where g=so_5 based both on the original proof and on graded arguments developed in [17] and [18]
A polyamidoamine dendrimer as a selective colorimetric and ratiometric fluorescent sensor for Li+ cations in alkali media
No full textGrabchev, Ivo Dumas, Stephane Chovelon, Jean-Marcin a DMF + NaOH medium, a polyamidoamine dendrimer having sixteen 1,8-naphthalimide fragments in its periphery, formed a complex only with Li+ ions, detected by a colour change from red to yellow and by a significant increase in fluorescence intensity. The dendrimer can be used as a selective sensor for Li+ ions in the presence of other alkali ions such as Na+ or K+. (C) 2009 Elsevier Ltd. All rights reserved
First generation poly(propyleneimine) dendrimers functionalised with 1,8-naphthalimide units as fluorescence sensors for metal cations and protons
No full textGrabchev, Ivo Dumas, Stephane Chovelon, Jean-Marc Nedelcheva, AnaThe synthesis of two new green fluorescent poly(propyleneimine) dendrimers from first generation has been described. The new materials are comprised of a 1,8-naphthalimide fluorophore having a substituent at C-4 position. The substituent in the first case is a N,N-dimethylaminoethylamino group while in the second one it is N-methylpiperazine. The spectroscopic and photophysical characteristics of the new dendrimers determined in organic solvent of different polarity have been presented. Both dendrimers show substantial increases in their fluorescence intensity in the presence of metal cations (Zn2+, Co2+, Ni2+, Pb2+, Mn2+, Cu2+, Fe3+ and Ag+) and protons. The influence of the photoinduced electron transfer on their sensing properties has been discussed. (c) 2007 Elsevier Ltd. All rights reserved
A História na visão de Alexandre Dumas
No full textEste artigo trata do interesse do Romantismo pela História durante o Romantismo francês. Procura delinear qual a ligação entre Alexandre Dumas e a concepção de História e de historiografia de seu tempo. Para isso, aborda Jules Michelet, um dos principais historiadores do período, por quem Dumas tinha grande admiração. Outra referência para o autor é Walter Scott, escritor escocês que desenvolve uma nova maneira de trabalhar a História na ficção e cujas inovações e técnicas foram devidamente analisadas, questionadas e superadas por Dumas. Por meio dessas referências, foi possível analisar alguns dos procedimentos utilizados por Alexandre Dumas em seus romances-folhetim, cujos enredos provêm da História da França.This article analyses the interest of French Romanticism in History. It shows the links between Alexander Dumas and his conception of History and historiography. In order to do that, the article studies Jules Michelet - an outstanding historian, greatly admired by Dumas. Walter Scott is another of Dumas' references from the same period. The Scotch author develops a new methodology for portraying History through fiction, that is analyzed and surpassed by Dumas. From this theoretical basis it was possible to analyze some of the techniques adopted by Dumas in his romantic feuilletons, whose plots are inspired by French History.Cet article commente l'intérêt du Romantisme par l'Histoire. Nous avons essayé de montrer quels sont les rapports d'Alexandre Dumas avec l'Histoire et la conception de l'Histoire et de l'historiographie de son temps (representée par Jules Michelet, très admiré par Dumas). Une autre référence pour l'auteur a été Walter Scott, un écrivain écossais qui a créé une nouvelle façon de travailler l'Histoire dans ses romans historiques. Nous avons discuté les inovations et techniques critiquées et dépassées par Dumas. À partir de cela, on a analysé les procédés utilisés par Dumas dans la composition de ses feuilletons, dont les sujets étaient fondés sur des événements de l'Histoire de France
Une Amazone , a Manuscript of Alexandre Dumas père
No full textThis article describes Une Amazone, a work by Alexandre Dumas that now resides in Syracuse University Special Collections. It is known alternatively by the title Herminie. It is a Romantic tragedy that takes place surrounding the events of a masquerade ball. The author also comments on the foreward and notes that Dumas provided with the manuscript, giving valuable insights into Dumas\u27 character development and creative process
Promenade médico-pharmaceutique à travers l'œuvre d'Alexandre Dumas
No full textMedical and pharmaceutical study through Alexandre Dumas' work.
Alexandre Dumas' work is rich in medical and pharmaceutical occurences. The author studies them in this article.À l'occasion du bicentenaire de la naissance d'Alexandre Dumas père et du transfert de ses cendres au Panthéon, l'auteure s'intéresse aux nombreuses occurrences médico-pharmaceutiques qui ponctuent l'oeuvre du grand écrivain. Sa documentation irréprochable résultait de la fréquentation assidue de nombreux savants, que l'on découvre au fil de cet article.Raynal Cécile. Promenade médico-pharmaceutique à travers l'œuvre d'Alexandre Dumas. In: Revue d'histoire de la pharmacie, 90ᵉ année, n°333, 2002. pp. 111-146
Epic Specificity of Ukrainian Folk Dumas
No full textThe article examines the epic specificity of Ukrainian dumas. It does it by demonstrating the originality of the verbal form of dumas, the musical elements of its texts and their performers, blind musicians, and by discussing the place of the genre among similar epic phenomena in the world literature. While S.N. Azbelev considers dumas to be a pre-epic form correspondent to the hypothetical “lyrico-epic cantilena” (A.N. Veselovskiy), B.N. Putilov relates them to the later, “post-classic” stage in the epos development, or, namely, to “post-epos.” The essay claims that only the dumas about Khmel’nichchina were composed “on hot tracks of historical events,” but even these works brought their plotline to a more general level. One can trace the features of the “classic” type of epos in the heroic “core” of dumas: their heroes, while shown as ordinary people in the everyday life, nevertheless demonstrate epic hyperbolism as warriors. Such are ataman Matyash the Old and Ivan Konovchenko, Vdovichenko. The captivity dumas reveal certain hyperbolism as well. These dumas often use a “two-level” structure that is usual for the “classic” epos; they feature traitors and contain signs indicating the beginning of cyclization around certain characters. At the same time, they have no “epic center” nor they have an “epic ruler” variant; they do not have such typical plots as unfair incarceration of the epic hero by the epic ruler, or heroic courtship, or the fight between father and son. The essay explains these gaps by the fact that the genre of dumas emerged and their plot structure developed as complimentary to an older epic form, bylynas that continued to circulate in the 16 th century. The creators of the new genre did not have to compose their dumas because songs on the same themes already circulated at that time and belonged to the generic form of bylina. The author explains transition from bylina to duma within Ukrainian epic tradition by historical changes, “social demand,” and cultural types of the performers
L'art du récit-cadre chez Dumas
No full textInternational audienceThis contribution focuses on the treatment of the frame narrative in the novels and short stories of Dumas. Even if this way of “starting well” the action is not the most widespread in his abundant production, it is present in a sufficiently significant way to merit analysis. Taking up a classic type of incipit, Dumas makes an extremely personal and original use of it. Mixing reality and fiction, he willingly upsets the compartmentalization of genres; he also uses it to appropriate a text written in collaboration; this appropriation often involves self-writing which we find in all these beginnings, and which compose a portrait of the author in the form of a puzzle. With Dumas, the narrative framework ceases to be a simple utility to become a mark of style.Cette contribution s'intéresse au traitement du récit-cadre dans les romans et nouvelles de Dumas. Reprenant un type d'incipit classique, Dumas en fait un usage très personnel et original. Mélangeant réalité et fiction, il bouscule volontiers le cloisonnement des genres ; il s'en sert aussi pour s'approprier un texte écrit en collaboration ; cette appropriation passe souvent par l'écriture de soi qu'on retrouve dans tous ces débuts, et qui composent un portrait de l'écrivain sous forme de puzzle. Avec Dumas, le récit-cadre cesse d'être un simple utilité pour devenir une marque de style.PlanFormes et modèlesLe récit-cadre chez DumasLe récit-cadre intergénériqueUsages du récit-cadre : l’appropriationCautionner le fantastiqueLa mise en scène de soi<br /
Mayor Woody Dumas Receiving Christmas Plants Grown by BRACA
No full textMayor Woody Dumas receiving Christmas plants grown by BRACA employees to raise funds. Author Jackson, BRACA Director, making the presentation. Date: ca. 1970'
- …
