1,720,990 research outputs found
Conservation of endangered animals: From biotechnologies to digital preservation
No full textCopyright © 2013 Flavia Pizzi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. In the recent years, the number of endangered animals, both referred to livestock and wild species, has grown enormously. The “livestock” term refers to animals domesticated for pro-ducing commodities for man such as food, fiber and draught. Livestock biodiversity is integral to our culture, history, environment, and economy. Thousands of livestock breeds have evolved over time to suit particular environments and farming systems. Conservation and analyses of these genetic resources rely on demographic characterization and correct breeding schemes
Vulvar and perivulvar thermal pattern in does during timed artificial insemination protocols
No full textDNA Metabarcoding as a tool for soil’s biodiversity assessment in organic and conventional agroecosystems
No full textElucidating how agricultural practices affect soil invertebrate communities is of relevant importance. In
the present study, using DNA metabarcoding, soil invertebrate communities of selected farms in the Po
Valley (Italy) were assessed in order to address the following questions: i) is the structure of soil
invertebrates’ communities different between organic and conventional farms? ii) To which extent are
field use (crop vs stable meadow) and field margins affecting these communities? Soil samples were
collected from organic and conventional farms in different periods of the year, covering the margins and
three levels towards the centre of fields of stable meadow and barley of both farms. DNA was extracted
from soil samples and a fragment of the cox1 gene amplified using three different pairs of primers;
amplicons were sequenced using Illumina Miseq. Raw sequences were analysed using Qiime and
ecological and statistical analyses were performed with R in order to address the above-mentioned
questions. The recovered invertebrate’s communities were dominated by Arthropoda (~ 80% of the OTUs
in each sample), a total of 831 OTUs (Insecta 51%, Arachnida 18% and Mollusca 14%) formed the core
diversity present in all the analysed samples. α-diversity indices were not significantly different between
the two farming strategies in terms of OTUs richness, Shannon index and Pielou’s evenness. β-diversity
analyses showed the field margins invertebrate communities were different from the inner field
communities. In conclusion, DNA metabarcoding represented a suitable method for soil invertebrates’
biodiversity estimation. The recovered communities are significantly affected by the crop and the
localization in the field (margin vs center). In addition, the role of field margins as a diversity reservoir is
increased in cultivated fields (barley), while in stable meadows fields, the interactions between the
margins and the center of the field are lower
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
Effect of Duration of in Vitro Culture Times on MicroRNA cargo in Equine Amniotic Mesenchymal Cells and Their Microvesicles
No full textSupplementary files of the paper "Effect of Duration of in Vitro Culture Times on MicroRNA cargo in Equine Amniotic Mesenchymal Cells and Their Microvesicles" Anna Lange-Consiglio, Barbara Lazzari, Flavia Pizzi, Alessandra Stella, Alessia Girani, Arianna Quintè, Fausto Cremonesi, Emanuele Capr
Effect of Duration of in Vitro Culture Times on MicroRNA cargo in Equine Amniotic Mesenchymal Cells and Their Microvesicles
No full textSupplementary files of the paper "Effect of Duration of in Vitro Culture Times on MicroRNA cargo in Equine Amniotic Mesenchymal Cells and Their Microvesicles" Anna Lange-Consiglio, Barbara Lazzari, Flavia Pizzi, Alessandra Stella, Alessia Girani, Arianna Quintè, Fausto Cremonesi, Emanuele Capr
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
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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