1,720,971 research outputs found

    Erratum: Validation of a mass spectrometry-based method for milk traces detection in baked food (Food Chemistry (2016) 199 (119-127))

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    The authors regret reversal of the order of given names and surnames of all authors which are now corrected as mentioned above. As a consequence the list of email addresses and author names is modified as shown below. The authors would like to apologise for any inconvenience cause

    Microcantilever resonator arrays for immunodetection of B-lactoglobulin milk allergen

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    The incidence of allergic disease is globally increasing so much that food allergy is actually considered as one of the main diseases of civilization, as well as among the major costs for healthcare worldwide. In such a scenario, the recent legislations introduced from European Union to protect consumers drastically drive the need for rapid, sensitive, and robust techniques to detect allergens within foodstuffs. We here report on an innovative immunorecognition method for β-lactoglobulin milk allergen detection, based on microcantilever resonator arrays, a promising class of biosensors. An original sandwich assay that uses the same polyclonal antibody as capture and secondary immunorecognition agent was proposed to overcome the low affinity of the simple direct method. The developed immunoassay showed better Limit Of Detection (LOD) and Limit Of Quantification (LOQ) than commercial ELISA plates, even after an aging of four months. To our knowledge, this work represents the first example in the literature of successfully immunodetection of milk allergens in low concentrations by microcantilever resonator arrays, thus opening new perspectives on alternative diagnostic tools for milk allergens screening tests

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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

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    We 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

    Author Index

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