Search results for "text"

Nouvelles données biostratigraphiques sur les dépots cénomanoturoniens du Nord-Est du fosse de ia Bénoué (Nigéria)

1993

Abstract The Upper Cretaceous deposits of the Upper Benue (North-East Nigeria) record regional and local events (sea-level changes, biological successions and tectonic movements) which throw light on the Upper Cenomanian transgression. Evidence of discontinuities and sedimentary assemblages well dated by micropalaeontological data, allows the sedimentary sequence to be interpreted in the context of sequence stratigraphy. The discovery of new ammonite faunas has enabled a more precise definition of the local biostratigraphy and a correlation of this with the standard zonal scheme. In the near future, when they are better known, the ammonite successions recognized in the Upper Benue could ena…

On Combinatorial Generation of Prefix Normal Words

2014

A prefix normal word is a binary word with the property that no substring has more 1s than the prefix of the same length. This class of words is important in the context of binary jumbled pattern matching. In this paper we present an efficient algorithm for exhaustively listing the prefix normal words with a fixed length. The algorithm is based on the fact that the language of prefix normal words is a bubble language, a class of binary languages with the property that, for any word w in the language, exchanging the first occurrence of 01 by 10 in w results in another word in the language. We prove that each prefix normal word is produced in O(n) amortized time, and conjecture, based on expe…

Concanavalin A aggregation and toxicity on cell cultures

2009

A number of neurodegenerative diseases are known to involve protein aggregation. Common mechanisms and structural properties of amyloids are thought to be involved in aggregation-related cytotoxicity. In this context we propose an experimental study on Concanavalin A (Con A) aggregation and use it as a model to study the relationship between cell toxicity and aggregation processes. Depending on solution conditions, Con A aggregation has been monitored by static and dynamic light scattering, Thioflavin T emission, and FTIR absorption. The morphology of different aggregate species was verified by means of Atomic Force Microscopy and Confocal Microscopy. During the aggregation pathway the nati…

Topological Approach to Analgesia

1994

The popularization of plate tectonics: presenting the concepts of dynamics and time

1996

There have been many attempts to describe and represent the theory of plate tectonics to laypeople. In the context of a study conducted at the request of a museum, we have tried to determine how the concepts of both geological time and the movements of the plates have been reformulated. After having systematically studied in detail publications aimed at more or less educated readers, we have selected a corpus of twelve articles from nine different magazines or journals. Among the different means of expression used by the popularizers, rhetorical figures constitute a significant resource. Procedures based on analogy (metaphor, comparison, analogical reasoning) were brought together in a sing…

Bulletins météo télévisés et vulgarisation scientifique – Analyse critique des données (non-) disponibles

2020

Les bulletins météo sont, du point du vue linguistique et discursif, des textes très intéressants car ils transmettent une explication scientifique relativement compliquée à la population et représentent donc une forme de vulgarisation scientifique ou de communication scientifique externe. Plusieurs questions apparaissent alors : Quelles différences apparaissent entre les bulletins météo destinés aux scientifiques et ceux destinés au grand public ? D’où proviennent les données scientifiques – ou les structures linguistiques scientifiques – remplacées par des modes d’expression plus expressifs ou plus subjectifs ?... Le projet de recherche « Analyse textuelle et modélisation syntactico-séman…

Catégorisation du discours parlementaire sur la citoyennetébritannique durant l’époque victorienne

2022

Durant la première moitié du XIXè siècle en Grande-Bretagne, le débat politique sur l’élargissement du suffrage révèle des approches divergentes sur les critères d’acquisition du statut de citoyen britannique. Cette présentation met en lumière la domination du discours conservateur et libéral durant les discussions parlementaires au sujet de l’extension du corps électoral du pays en 1832. Via la linguistique exploratoire, à l’aide du logiciel Iramuteq, nous observerons la polarisation d’un débat entre deux groupements politiques réciproquement déterminés à faire triompher leurs positions partisanes. Le but de cette étude est de montrer toute l’aubaine de la méthode de l’analyse outillée, da…

Conclusion

2022

Ready Access to Proquinazid Haptens via Cross-Coupling Chemistry for Antibody Generation and Immunoassay Development.

2015

17 pages, 4 tables, 5 figures.-- Publisher's PDF

First signals of electrochemically oxidized species of TTF and TMT-TTF : a study by in situ spectroelectrochemical FTIR and DFT calculations

2003

A first study by in situ FTIR spectroelectrochemistry of TTF and TTM-TTF has been undertaken. The oxidation, in this case, is caused only by electrochemistry, which constitutes a clear advantage over chemical oxidation since no side products are present in the solution. In this context, we obtained the signals of neutral, radical cation, and dication species of TTF and TTM-TTF. The experimental conditions were chosen in order to avoid the possible formation of π-dimer species and to obtain a satisfactory signal-to-noise ratio. A weak signal was detected for TTF and a stronger one for TTM-TTF. The changes induced by the oxidation process in the IR spectra of TTF and TTM-TTF have been analyze…