1,721,073 research outputs found
Albuminuria during acute myocardial infarction and prognosis: a methodological issue.
No full textMicroalbuminuria in hypertensive nondiabetic patients with ST elevation myocardial infarction
Mechanism of the potentiating effect of cytochalasin B on the respiratory burst induced by Concanavalin A in leucocytes.
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
Partial purification of the superoxide-generating system of macrophages. Possibleassociation of the NADPH oxidase activity with a low-potential (-247 mV)cytochrome b
No full textNADPH oxidase activity was solubilized by detergent treatment of subcellular
particles obtained from guinea-pig peritoneal macrophages stimulated with phorbol
myristate acetate. Gel filtration of the material containing the NADPH oxidase
activity gave two peaks of proteins, one of which eluted with the void and the
other with the included volume of an AcA 22 column. The material eluted in the
void volume contained more than 50% of the NADPH oxidase activity and less than
10% of the NAD(P)H cytochrome c reductase activity. A b-type cytochrome with
peaks of absorption at 558, 528 and 426 nm was also enriched in the fraction
which contained the NADPH oxidase activity. The distribution of flavoproteins as
revealed by the measurement of FAD was different from that of NADPH oxidase and
cytochrome b, and followed the elution profile of NADH cytochrome c reductase.
Studies in subcellular particles showed that the b cytochromes of mitochondria
and endoplasmic reticulum reduced by selective biochemical means accounted for
only a minor part of the total b-type cytochromes and that the new cytochrome b
previously described in neutrophils is the major chromophore also in macrophages.
Oxidation-reduction midpoint potential of the partially purified cytochrome b was
shown to be -247 mV. Association of cytochrome b with the NADPH oxidase activity
and its very low Em7.0 makes it a suitable candidate to be part of the
superoxide-generating system also in macrophages
Adaptive-Attentive Geolocalization From Few Queries: A Hybrid Approach
Full text linkWe tackle the task of cross-domain visual geo-localization, where the goal is to geo-localize a given query image against a database of geo-tagged images, in the case where the query and the database belong to different visual domains. In particular, at training time, we consider having access to only few unlabeled queries from the target domain. To adapt our deep neural network to the database distribution, we rely on a 2-fold domain adaptation technique, based on a hybrid generative-discriminative approach. To further enhance the architecture, and to ensure robustness across domains, we employ a novel attention layer that can easily be plugged into existing architectures. Through a large number of experiments, we show that this adaptive-attentive approach makes the model robust to large domain shifts, such as unseen cities or weather conditions. Finally, we propose a new large-scale dataset for cross-domain visual geo-localization, called SVOX
Tumor necrosis factor-alpha/cachectin activates the O2(-)-generating system of human neutrophils independently of the hydrolysis of phosphoinositides and the release of arachidonic acid
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