1,721,071 research outputs found
Thermal-behavior of the rabbit sublingual gland
No full textThe purpose of this study was to show how some aspects of the biological matrix water can be investigated by thermoanalytical methods when using thermogravimetry and differential scanning calorimetry. Such methods allow to investigate the water in the rabbit sublingual gland and to quantitate it. The results supported the view that the water contained in this secretory organ show a large number of energetic interactions established on the basis of differential steps of water release by thermal disruptio
Determinazione di 12 corticosteroidi mediante estrazione MSPD seguita da analisi HPLC/Tandem MS
No full text
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
Contributo allo studio delle lesioni del morbo di Dupuytren mediante calorimetria differenziale di scorrimento e analisi termogravimetrica
No full textLe alterazioni biochimiche dimostrate nelle lesioni del morbo di Dupuytren possono indurre modifiche nelle interazioni acqua-matrice. Allo scopo di studiare in dettaglio tale fenomeno sono state impiegate la calorimetria differenziale di scorrimento e l’analisi termogravimetrica, che hanno evidenziato nel tessuto patologico un incremento della percentuale di acqua totale e la comparsa di un tipo d’acqua assente nell’aponeurosi palmare apparentemente indenne. Viene quindi discusso il possibile significato patogenetico di tali osservazioni.A study of Dupuytren's disease using differential scanning calorimetry and thermogravimetry.
Biochemical abnormalities in the lesions of Dupuytren’s disease may modify the interactions between water and matrix. This phenomenon was investigated using differential scanning calorimetry and thermogravimetry. An increase in the percentage of total water and a type of water absent in the normal aponeurosis was detected in the pathologic tissue. The possible pathogenetic role of these findings is
discussed.Contribution à l'étude de la maladie de Dupuytren parmi la calorimetrie différentiel de ecoulement et les analyses thermogravimétrique.
Les altérations biochimiques démontrées dans les lésions de la maladie de Dupuytren pouvent enduire des modifications dans les interations eau-matrice. Dans le but d’étudier en detail ce phénornéne on a employé la calorimetrie differentiel de écoulement et I’analyse thermogravimetrique, qui ont evidencié dans le tissu pathologique un’augmentation du pourcentage d’eau total et l’apparition d’une certaine eau absente dans l’aponévrose palmaire apparemment indenne. Les Auteurs discutent sur la possible valeur pathogénetique de telles obsérvations
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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