Search results for "solu"
showing 10 items of 7577 documents
Dimerization of Copper Octacarboxyphthalocyanine in Aqueous Solutions
2005
Spectral absorption UV-Vis investigations on association of copper(II) octacarboxyphthalocyanine in aqueous solutions are reported. In 5.0x10-7-5.0x10-5 mol/dm3 concentration range monomers and dimers are mainly present. The calculated dimerization constant 106dm3/mol at 25°C and the hypsochromic spectral shift for the dimer 1164 cm-1 (688 nm_ 637 nm) indicate a stack-like association of molecules and suggestpi-pi interactions between Pc macrocycles in dimer and higher aggregates, in contrast to hydrogen bonding between carboxylic groups of adjacent Pc molecules.
L’ambiguïté anaphorique et la résolution automatique de l’anaphore pronominale
2019
Pronominal anaphores can create ambiguities when requesting the correct antecedent. In a context of automation of linguistic and textual processing, several researchers in the field of automatic language processing (TAL) have put in place various approaches to solve the problem. We propose to adapt these approaches to the automatic resolution of pronominal anaphors in a closed body of abstracts of French literary works (RESUMAN).Firstly, linguistic, textual and cognitive models are presented, which report on the functioning and interpretation of personal pronouns in French texts. Then, the interpretation procedures of the pronominalanaphors are exposed : the procedure of minimal distance, t…
Enterovirus-induced non-acidic entry pathway and its relation to the epidermal growth factor receptor pathway
2014
The relationship among beliefs about problem solving, epistemological beliefs, grade level, sex, and problem solving achievement: A study in secondar…
2020
The first purpuse of this investigation was to study the effects of sex and grade level on secondary students’ beliefs about epistemology and problem solving. The second purpuse was to analyze the contribution of both belief systems, grade level, and sex to problem solving achievement. One hundred and forty-four High School students, 9th and 11th grade students, took part in the study. Two questionnaires (Schommer and StageKloosterman’s questionnaires) and a problem solving test (two word problems of the PISA tests) were administered to these students. Two ANOVAs, an ANCOVA, and a multiple regression analysis were carried out from data obtained in the investigation. In the light of the fore…
La nuova risoluzione delle crisi bancarie: bail-in, ordine di mercato e ricadute contrattuali
Il presente studio è idealmente ripartito in una prima parte relativa all'analisi dell'impresa bancaria, della sua governance e, soprattutto, allo studio della direttiva europea 2014/59/UE (c.d. BRRD) e una seconda, relativa alle considerazioni sugli effetti che l'applicazione del bail-in, strumento cardine della normativa in parola, può avere in ambito contrattuale e, conseguentemente, sull'ordine di mercato che ne risulta. Così, si affrontano i temi del rapporto contrattuale tra le banche e i soggetti non azionisti, a valle degli interventi di risoluzione, unitamente alle annose questioni delle asimmetrie informative e della funzione selettiva del contratto. Lo studio si chiude con alcune…
Multiple solutions for semilinear Robin problems with superlinear reaction and no symmetries
2021
We study a semilinear Robin problem driven by the Laplacian with a parametric superlinear reaction. Using variational tools from the critical point theory with truncation and comparison techniques, critical groups and flow invariance arguments, we show the existence of seven nontrivial smooth solutions, all with sign information and ordered.
Freedom and Necessity in The Winter’s Tale
2014
From the first expository scene, The Winter’s Tale exhibits a concern with necessity, either through the use of the word itself, its derivatives (necessities, necessary), and their synonyms (needful, required) or through the notion of what “must” happen, what “cannot but” happen. The recurrence of such terms conveys a sense that this is a world where no one is free, and every action is dictated by force of circumstance. This is reinforced by the widespread use of the traditional imagery of fate. Yet the characters of the play are reluctant to submit to necessity. Some even fantasize states of absolute freedom, including freedom from the laws of nature. The play itself, notwithstanding the o…
Multi-resolution investigations of the methane IR spectrum. At the borderline between modelling state of the art and astrophysical needs
2009
International audience; Remote sensing of the atmosphere of astrophysical objects relies essentially on molecular spectroscopy. Astrophysical investigations generally need both complete and accurate spectroscopic databases. Despite continuous efforts in experimental and theoretical spectroscopic investigations, the lack of data in specific spectral regions of interest is one of the principal limitation of the presently available spectroscopic databases. Extrapolations to relevant experimental conditions like high temperature is also a major issue for astrophysical applications. Among other molecules, methane is present in the atmosphere of many astrophysical objects. The modeling of its abs…
Large Magnetic Polyoxometalates Containing the Cobalt Cubane ‘[CoIIICo3II(OH)3(H2O)6–m(PW9O34)]3− (m = 3 or 5) as a Subunit
2018
A synthetic procedure is presented to construct new magnetic polyoxometalates (POMs) containing one or two subunits of ‘[CoIIICo3II(OH)3(H2O)6−m(PW9O34)]3−' (m = 3 or 5). The substitution of the water ligands present in these subunits by oxo or hydroxo ligands belonging to other POM fragments, gives rise to four, larger POM anions: [Co7(OH)6(H2O)6(PW9O34)2]9− (2), [Co7(OH)6(H2O)4(PW9O34)2]n9n- (2′), [Co11(OH)5(H2O)5(W6O24)(PW9O34)3]22− (3) and [{Co4(OH)3(H2O)(PW9O34)}2{K⊂(H2W12O41)2}{Co(H2O)4}2]17− (4). The crystal structures, magnetic characterization and stabilities in aqueous solutions of these POM derivatives are also presented.
Crystal structure of (1S,3R,8R,9S,10R)-10-bromomethyl-2,2-dichloro-9,10-epoxy-3,7,7-trimethyltricyclo[6.4.0.01,3]dodecane
2015
The title compound, C16H23BrCl2O, was synthesized in three steps from β-himachalene (3,5,5,9-tetramethyl-2,4a,5,6,7,8-hexahydro-1H-benzocycloheptene), which was isolated from the essential oil of the Atlas cedar (cedrus atlantica). The molecule is built up from two fused six- and seven-membered rings, each linked to a three-membered ring. The six-membered ring has a screw-boat conformation, whereas the seven-membered ring displays a twist-boat conformation. The absolute structure was established unambiguously from anomalous dispersion effects.