1,720,962 research outputs found
Les gastéropodes
No full textLe stratotype du Sinémurien – un étage du Jurassique inférieur – est un lieu de référence géologique international situé dans la région de Semur-en-Auxois, jolie ville à dominante médiévale de Bourgogne-Franche-Comté. C’est Alcide d’Orbigny, l’un des naturalistes français les plus productifs et les plus féconds au cours de la première moitié du XIXe siècle, qui le définit en 1849 dans son Cours élémentaire de paléontologie et de géologie stratigraphiques. Il a alors largement bénéficié de l’aide de la très active Société des sciences de Semur et plus particulièrement de celle de plusieurs de ses membres. Ce stratotype s’exprime aujourd’hui par plusieurs coupes géologiques dans la région de Semur-en-Auxois, mais aussi par la remarquable collection de paléontologie du musée de la ville, qui constitue une référence mondiale de la biodiversité marine du Sinémurien. Cet ouvrage présente l’ensemble des connaissances de l’étage Sinémurien, principalement dans sa région type de Semur-en-Auxois, au travers de nombreuses approches complémentaires. Il regroupe en particulier et pour la première fois un ensemble de planches photographiques de fossiles remarquables de cet étage
Vetigastropoda and Neritimorpha from the Lower Bajocian of Luxembourg and palaeobiogeography of Aalenian–Bajocian (Middle Jurassic) gastropods of western Europe
Full text linkVetigastropod and neritimorph species from Lower Bajocian (Middle Jurassic) sediments of south-western Luxembourg are described. Eighteen species are recognized. Two new genera – Szabotomaria gen. nov. and Fabercapulus gen. nov. – and four new species – Szabotomaria ziqquratiformis sp. nov., Colpomphalus thuyi sp. nov., Colpomphalus tigratus sp. nov. and Fabercapulus semisculptus sp. nov. – are erected. These species, together with other species recently described from the same strata, are part of a diverse assemblage consisting of 32 species belonging to 14 genera in six families and five superfamilies, representing the richest vetigastropod-neritimorph fauna currently known from Bajocian and sub-coeval deposits of western Europe. An analysis of the palaeoecological and palaeobiogeographical relationships of this fauna and those from other areas of the western European shelf was performed using cluster analysis and by comparison of the respective taxonomic structures. The former detected a major cluster composed of two distinct branches: the faunas of the northern Paris-Wessex Basin, including Luxembourg, and those of the southern Germany basin. These faunas have similar taxonomic structures and occur mainly in facies represented by condensed iron ooid-rich marls and limestones deposited in lower offshore to upper offshore-shoreface settings. The close relationship between the Luxembourg and other faunas of the Paris-Wessex Basin reflects free faunal exchange and facies similarities. Slight differences in the sedimentary context could explain the separation of the southern German from the Anglo-Paris branch, whereas similarities between Swabian and Franconian faunas most probably reflect the geographical continuity of these areas. The Early Bajocian fauna of the East Midlands Shelf comes from sediments deposited in a shallow-water, oolitic barrier complex and is different from other western European faunas in both species composition and taxonomic structure
Galletitas a base de harina de sorgo, bajas en grasas saturadas, libres de prolaminas y gluteninas potencialmente alergénicas
No full textFil: Colombo, María Elena. Universidad de Buenos Aires. Facultad de Medicina. Escuela de Nutrición, Argentina.Fil: Altamura, Maríangeles. Universidad de Buenos Aires. Facultad de Medicina. Escuela de Nutrición, Argentina.Fil: Rivas, Jessica Ruth. Universidad de Buenos Aires. Facultad de Medicina. Escuela de Nutrición, Argentina.Fil: Russano, Melisa Lorena. Universidad de Buenos Aires. Facultad de Medicina. Escuela de Nutrición, Argentina.Fil: Valentini, Mara. Universidad de Buenos Aires. Facultad de Medicina. Escuela de Nutrición, Argentina.Fil: Rodriguez Lubary, Delia. Universidad de Buenos Aires. Facultad de Medicina. Escuela de Nutrición, Argentina.El objetivo del presente estudio fue diseñar y desarrollar galletitas a base de harina de sorgo, libres de prolaminas y glutelinas potencialmente alergénicas, reducidas en grasas saturadas; evaluar su aceptabilidad global y calcular el costo de elaboración.The aim of this study is to design and create biscuits based on sorghum flour, free of potentially allergenic glutelins and prolamins, which are reduced in saturated fats; as well as to evaluate their overall acceptability and calculate the cost of processing
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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