1,720,997 research outputs found
Anatomia Comparata dei Mammiferi domestici. vol. 7° Neurologia - Sistema nervoso periferico, ghiandole endocrine, estesiologia
No full textQuesto volume è dedicato al sistema nervoso periferico ed autonomo, alle ghiandole endocrine, al tegumentario e agli organi di senso (occhio e orecchio). Esso è corredato di 312 figure, costituite da disegni anatomici e fotografie di preparati anatomici macro- e microscopici.
Con questo volume viene portata a termine una monumentale summa anatomica veterinaria che non ha precedenti. Le numerose illustrazioni presenti in questo e negli altri volumi del trattato sono per la maggior parte opera dello stesso Barone. Gli animali considerati sono molteplici (cavallo, bovino, piccoli ruminanti, maiale, cane, gatto e coniglio) ed è fornita una utilissima comparazione con l'uomo. Poiché le particolarità di ciascuna specie sono precedute da descrizioni generali, queste ultime sono più che sufficienti per l'ottima preparazione di un esame universitario. Quest'opera, inoltre, deve essere considerata come uno strumento di lavoro da cui il medico veterinario può trarre i dati anatomici indispensabili per la comprensione di nuovi aspetti fisiologici e patologici. Recenti situazioni cliniche hanno dimostrato che organi o apparati negletti da un punto di vista anatomico hanno assunto improvvisamente enorme importanza. La conoscenza dell'anatomia è indispensabile: la forma, intesa sia in senso macroscopico che ultrastrutturale, va considerata come l'immagine plastica della funzione
Distribution of Myelinated and Unmyelinated Fibers in Trochlear and Abducens Nerves in the Sheep.
No full textThe central endings of the primary trigeminal afferent fibers running within the troclear nerve
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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
Immunohistochemical localization of alpha1a-adrenoreceptors in muscle spindles of rabbit masseter muscle.
No full textThe expression of alpha1a-adrenoreceptors (alpha1a-ARs) within the muscle spindles of rabbit masseter muscle was investigated. The alpha1a-ARs were detected by immunohistochemical fluorescent method and examined along the entire length of 109 cross serially sectioned spindles. The sympathetic fibers were visualized by the immunofluorescent labeling of the noradrenaline synthesizing enzymes tyrosine hydroxylase (TH) and dopamine beta-hydroxylase (DBH). In order to recognize the intrafusal muscle fiber types, antibodies for different myosin heavy chain isoforms (MyHCI) were used. TH and DBH immunolabeled nerve fibers have been observed within the capsule lamellar layers, in the periaxial fluid space and close to intrafusal muscle fibers. The alpha1a-ARs were detected on the smooth muscle cells of the blood vessels coursing in the muscle and in the capsule lamellar layers or within the periaxial fluid space of the spindles. Moreover, at the polar regions of a high percentage (88.1%) of muscle spindles a strong alpha1a-ARs immunoreactivity was present on the intrafusal muscle fibers. In double immunostained sections for alpha1a-ARs and MyHCI it was evidenced that both bag, and nuclear chain fibers express alfa1a-ARs. The receptors that we have detected by immunofluorescence may support a direct control by adrenergic fibers on muscle spindle
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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