1,721,033 research outputs found
Proteomic analysis of Populus×euramericana (clone I-214) roots to identify key factors involved in zinc stress response
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
Interdisciplinary study for the evaluation of biochemicalalterations on mussel Mytilus galloprovincialis exposedto a tributyltin-polluted area
Full text linkAn interdisciplinary approach was employed to
monitor the concentration and the effects of butyltin compounds
in mussels (Mytilus galloprovincialis). Tissues from
animals exposed to a marine area (Vado Ligure harbour)
with a high concentration of tributyltin (TBT) were analysed
and compared with control samples. TBT concentrations
were measured by gas chromatography–mass spectrometry
and the protein pattern in gill tissues was studied by proteomic
analysis. Several proteomic signatures associated with
contaminant exposure were observed; spots that were significantly
increased in all contaminated samples were
identified by mass spectrometry as fragments of β-tubulin.
The degradation of β-tubulin was then confirmed by western
blot analysis with specific anti-β-tubulin antibody. The effects
observed on mussel gills after exposure in the TBT-polluted
area are discussed
Ovine subclinical mastitis: Proteomic analysis of whey and milk fat globules unveils putative diagnostic biomarkers in milk
No full textimpact on both animal welfare and economy in the dairy industry. A better knowledge is
needed to understand the ovine mammary gland metabolism and its response to bacterial
infection. In this study, the proteomic changes in ovine milk as a result of subclinical mastitis
were investigated by comparing both whey and fat globule membrane profiles of samples
from Staphylococcus chromogenes-positive individuals, with those from non-infected counterparts
having high or lowsomatic cell count; the latterwere used as control. 2-DEand combined
MS procedures were utilized for this purpose. Although sample bromatological parameters
were very similar, proteomic analysis highlighted significant differences between the three
experimental groups. Most relevant changes were observed between samples of infected milk
and control. Modifications related to the defense response of the mammary gland to the
pathogen were evident, with important consequences on nutritional and technological
properties of milk. On the other hand, quantitative protein changes between non-infected
samples with low and high levels of somatic cells indicated that the latter may result as a
consequence of a probable unpaired cellular metabolism due to cellular stress, hormonal
variations or previous infections. Putative biomarkers useful for the monitoring of sheep
mammary metabolismand for the careful management of ovine subclinical mastitis to avoid
its clinical degeneration are proposed and discussed
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
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