Search results for "CISS"

Unité et scissions dans l’histoire de la CGT

2019

National audience; La question de l’unité tient une place particulière dans l’histoire de la CGT dans la mesure où elle est l’exception qui confirme la règle. En dehors des périodes 1895-1921, 1936-39 et 1943-47, la spécificité du syndicalisme confédéré réside dans sa division et son éclatement. Sur plus de 120 ans d’existence, la CGT n’a connu l’unité organique que durant une trentaine d’années (soit ¼ de son histoire). La division, ou le pluralisme si l’on préfère, est en somme la situation « normale » du syndicalisme français.Ce chapitre propose donc de comprendre les raisons et les processus qui ont conduit à cet état de dispersion ; et inversement, d’analyser les facteurs qui ont rendu…

Cissampeloflavone, a chalcone-flavone dimer from Cissampelos pareira

2003

From the aerial parts of Cissampelos pareira L. (Menispermaceae), a chalcone-flavone dimer has been isolated which, mainly from NMR spectroscopic and MS data, was proved to be 2-(4-hydroxy-3-methoxyphenyl)-7-(4-methoxyphenyl)-6-(2-hydroxy-4,6-dimethoxybenzoyl)-furano[3,2-g]benzopyran-4-one. This has been assigned the trivial name cissampeloflavone. The compound has good activity against Trypanosoma cruzi and T. brucei rhodesiense and has a low toxicity to the human KB cell line.

Erratum to “Cissampeloflavone, a chalcone–flavone dimer from Cissampelos pareira”[Phytochemistry 64 (2003) 645–647]

2003

Resonating valence bond quantum Monte Carlo: Application to the ozone molecule

2015

We study the potential energy surface of the ozone molecule by means of Quantum Monte Carlo simulations based on the resonating valence bond concept. The trial wave function consists of an antisymmetrized geminal power arranged in a single-determinant that is multiplied by a Jastrow correlation factor. Whereas the determinantal part incorporates static correlation effects, the augmented real-space correlation factor accounts for the dynamics electron correlation. The accuracy of this approach is demonstrated by computing the potential energy surface for the ozone molecule in three vibrational states: symmetric, asymmetric and scissoring. We find that the employed wave function provides a de…

Characterization of adsorbed water in MIL-53(Al) by FTIR spectroscopy and ab-initio calculations

2015

Here, we report ab-initio calculations developed with a twofold purpose: understand how adsorbed water molecules alter the infrared spectrum of the metal-organic framework MIL-53(Al) and to investigate which are the associated physico-chemical processes. The analyzed structures are the two anhydrous narrow (np⊘) and large (lp⊘) pore forms and the hydrated narrow pore form (np-H2O) of the MIL-53(Al). For these structures, we determined their corresponding infrared spectra (FTIR) and we identified the vibrational modes associated to the dominant spectral lines. We show that wagging and scissoring modes of CO2 give flexibility to the structure for facilitating the lp⊘- np⊘ transition. In our s…

Por una rebeldía sin resentimiento: contra la desigualdad obscena y el populismo

2017

El autor analiza como causas del malestar actual de la sociedad, de un lado, la indiferencia del sector mejor situado de la población ante el crecimiento de una desigualdad obscena. Y de otro la extensión de los populismos, basados en el resentimiento, fruto de un narcisismo carente de sentido de responsabilidad. Frente a ambos extremos propone una rebeldía contra la injusticia social y económica, que debe ir acompañada del agradecimiento ante la maravilla de la creación. The author approaches the reasons for the general lack of satisfaction in civil society: on one hand the indiference of those who are in a better position and on the other the increase of populism based on resentment and n…

Substrate determinants for cleavage in cis and in trans by the hepatitis C virus NS3 proteinase

1995

Processing of the hepatitis C virus polyprotein is accomplished by a series of cotranslational and posttranslational cleavages mediated by host cell signalases and two virally encoded proteinases. Of these the NS3 proteinase is essential for processing at the NS3/4A, NS4A/4B, NS4B/5A, and NS5A/5B junctions. Processing between NS3 and NS4A occurs in cis, implying an intramolecular reaction mechanism, whereas cleavage at the other sites can also be mediated in trans. Sequence analysis of the amino termini of mature cleavage products and comparisons of amino acid residues around the scissile bonds of various hepatitis C virus isolates identified amino acid residues which might contribute to su…

Narcissistic Tendencies Among Actors

2014

Building on a two-dimensional reconceptualization of grandiose narcissism, we investigated how narcissistic admiration (the tendency toward agentic self-promotion) and rivalry (the tendency toward other derogation) are related to acting. Study 1 ( N = 583) showed that acting students scored higher on narcissistic admiration than students with other majors, but at the same time, the acting students scored lower on rivalry. In Study 2 ( N = 283), we compared improvisational theater actors with a comparison group and found the same pattern: Admiration was higher, but rivalry was lower among the actors (across both self-reports and informant reports). Effects persisted when we controlled for s…

Self-isolation for the self-centered: Negative framing increases narcissists' willingness to self-isolate during COVID-19 through higher response eff…

2021

Abstract The coronavirus (COVID-19) pandemic has come with various health recommendations restricting personal freedom, such as social distancing and self-isolation. Considering the personal sacrifices involved, not all individuals are equally willing to comply with such recommendations, which might pose a health hazard further down the line. In a high-powered study (N = 800), we show that individual differences in narcissism influence the willingness to self-isolate during pandemics, with individuals high (vs. low) in narcissism being less willing to self-isolate. However, this tendency can be offset by tailored message framing. Specifically, individuals high (vs. low) in narcissism are mo…

Über die Stabilität Von Copolymeren aus 1,3,5-Trioxan mit verschiedenen Lactonen

1976

Der thermische Abbau von Copolymeren aus 1,3,5-Trioxan und den Lactonen β-Propiolacton (3-Propanolid), Pivalolacton (2,2-Dimethyl-3-propanolid) und e-Caprolacton (6-Hexanolid) wurde untersucht. Der langsame und vollstandige Abbau der Copolymeren wird zuruckgefuhrt auf 1 eine statistische acidolytische Kettenspaltung durch Carboxyl-Endgruppen, 2 die Abspaltung von Acrylsaure an den sauren Endgruppen, 3 die statistische Kettenspaltung durch Pyrolyse von Esterbindungen vor allem in Sequenzen aus mehreren β-Propiolactonbausteinen. Die Teilreaktionen (1) und (2) konnen durch Zusatz von Butandiol-Diglycidylather-(1,4-Bis(2,3-epoxypropoxy)butan) oder N-(2-Naphthyl)anilin oder von Epoxiden stark ve…