1,721,117 research outputs found
Study of some aryl-propionamide SARMs metabolism in food producing animals. Highlighting biomarkers of exposure and effects for control purposes.
Full text linkTesis doctoral presentada y defendida en la Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Argentina, para obtener el título de “Doctor de la Universidad de Buenos Aires Área Ciencias Veterinarias” (Res. CONEAU 1076/13), el 25 de junio de 2020.Compounds with anabolic properties have recently emerged: specific androgen receptor modulators (SARMs), currently being developed for the treatment of muscle-loss diseases. For example, commercially available Ostarine (MK-2866 / GTX-024 Enobosarm) exerts its anabolic effects exclusively on skeletal muscles and has no androgenic activity. Based on their mechanisms of action and preliminary clinical results, these products could potentially be used as anabolic substances. In this context, the aim of this international thesis is to develop analytical strategies to highlight their fraudulent use in production animal (cattle and pigs). Based on liquid-phase chromatography coupling techniques with low- and high-resolution mass
spectrometry (LC-QqQ and HRMS), the study of the metabolism of SARMs (Enobosarm, Andarine, Bicalutamide and Hydroxyflutamide) after administration and identification of selective metabolites that can be used as biomarkers in animal serums, faeces and serums. This research will help to ensure the consumer's chemical safety of animal products by monitoring a new class of anabolic compounds
Résumé : Les modulateurs spécifiques des récepteurs androgènes (SARMs), exercent leurs effets anabolisants exclusivement sur les muscles squelettiques et ne présentent pas d'activité androgénique. Sur la base de leurs mécanismes d’action et des résultats cliniques préliminaires, ces produits pourraient potentiellement être utilisés comme des substances anabolisantes. Dans ce contexte, l'objectif de la thèse, réalisée en co-tutelle internationale, est de développer des stratégies analytiques spécifiques et sensibles permettant de mettre en évidence leur utilisation frauduleuse chez l’animal de production (bovins et porcins). En s’appuyant sur des stratégies analytiques de couplage de chromatographie en phase liquide avec la spectrométrie de masse
basse et haute résolution (LC-QqQ et HRMS), le métabolisme de quatre SARMs (Enobosarm, Andarine, Bicalutamide et Hydroxyflutamide) ainsi que leurs cinétiques d’élimination ont été étudiés chez deux espèces animales, après administration des composés par voie orale. Des métabolites biomarqueurs ont pu être identifiés dans les matrices urine, fécès et sérum de bovins et porcins et des fenêtres de détection proposées. Ce travail de recherche contribuera à garantir au consommateur une sécurité chimique des denrées d’origine animale en assurant le suivi d’une nouvelle classe de composés anabolisants.Les modulateurs spécifiques des récepteurs androgènes (SARMs), exercent leurs effets anabolisants exclusivement sur les muscles squelettiques et ne présentent pas d'activité androgénique. Sur la base de leurs mécanismes d’action et des résultats cliniques préliminaires, ces produits pourraient potentiellement être utilisés comme des substances anabolisantes. Dans ce contexte, l'objectif de la thèse, réalisée en co-tutelle internationale, est de développer des stratégies analytiques spécifiques et sensibles permettant de mettre en évidence leur utilisation frauduleuse chez l’animal de production (bovins et porcins). En s’appuyant sur des stratégies analytiques de couplage de chromatographie en phase liquide avec la spectrométrie de masse
basse et haute résolution (LC-QqQ et HRMS), le métabolisme de quatre SARMs (Enobosarm, Andarine, Bicalutamide et Hydroxyflutamide) ainsi que leurs cinétiques d’élimination ont été étudiés chez deux espèces animales, après administration des composés par voie orale. Des métabolites biomarqueurs ont pu être identifiés dans les matrices urine, fécès et sérum de bovins et porcins et des fenêtres de détection proposées. Ce travail de recherche contribuera à garantir au consommateur une sécurité chimique des denrées d’origine animale en assurant le suivi d’une nouvelle classe de composés anabolisants.Fil: Rojas, Dante Emanuel. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto Tecnología de Alimentos; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Biológica. Instituto de Química Biológica; Argentina
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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