1,721,284 research outputs found
HEALTH MONITORING OF WILDLIFE FOR THE PROTECTION OF HUMAN, LIVESTOCK AND ENVIRONMENT HEALTH
Full text linkThe risk of spreading pathogens among wildlife, humans and livestock is increasing in recent years. This increased risk is being driven by multiple factors related to changes in human society (e.g., mobility, recreation), animal husbandry (e.g., intensification, range farming), natural habitat (e.g., forest cover, connectivity), and climate change (e.g., mean temperature, rainfall). Until these underlying factors are addressed, it is important to carry out effective surveillance activities for early warning of disease emergence. This requires disease surveillance of not only humans and livestock, but also of the reservoir for many of these diseases: wildlife. “Wildlife reservoir” is a deceptively simple term for a complex entity. For these reasons, a target surveilance was performed in Brescia Province aimed to idenentified the possible presence of diseases selected in base of the zoonotic risk, the possible impact on domestic animals and on wild animals(bovine tuberculosis, Aujeszky disease, EBHS).The application of the recommended approach (Boadella et al. 2011; Ryser-Degiorgis 2013) let to identify zoonotic disease as M. caprae in red deer, evaluate the natural prevalence of disease with high value for domestic as Aujeszky disease in wild boar, define through modelling the epidemiological trends of wildlife specific disease as EBHS in hare and standardize a new way of sampling and analyzing blood for EBHS. From the present experiences, it’s more evident that effective wildlife disease surveillance depends on knowledge of the biological characteristics of the target populations, as well as changes in population sizes and in geographical distribution over time. Such knowledge is required in order to design appropriate sampling protocols for disease surveys, to develop disease contingency plans, to assess the risk of disease transmission to other species, and to guide wildlife management strategies in general. For these reason, three actions can help to improve knowledge on wildlife diseases and capacity to deal with their consequences on animal and human health as well as conservation: (1) extend surveillance schemes to the not yet included regions and taxa, (2) improve coordination between surveillance schemes and other wildlife monitoring and (3) promote multidisciplinary research on the relevant wildlife diseases linked with local health situation
Benthic agglutinated foraminifera in the Monte Alpe Cherts Formation (middle-late Jurassic) at Sasso di Castro (Northern Apennines, Italy)
No full textCapillary zone elactrophoresis of hydroxynitrile lyase and b-glucosidase from sweet almond
Full text linkThe extract from defatted almond meal, called emulsin, contains b-glucosidases and oxynitrilases. Oxinitrilase catalyzes the formation of chemical equilibrium between a-hydroxynitriles and their corresponding aldehydes and HCN. In the presence of an excess of HCN this enzyme catalyzes the stereospecific addition of HCN to a nuber of aldehydes to form optically active a-hydroxynitriles which are building blocks for asimetric organic synthesis. Glycosylhydrolases usually catalyze the stereospecific hydrolysis of glycosidic bonds but they can also be used for the formation of glycosidic bonds by means of two process: reverse hydrolysis and transglycosilation. Both enzynes are currently used in our laboratory for synthetic applications. In particular we use the b-glucosidase from almond to glycosylate various alcohol bearing allyl functionalities with the aim of producing glycosyl monomers which produce hydrophilic polymer coatings and DNA separation matrices. The isolation of the enzymes from sweet almonds requires a fractional ammonium sulphate precipitation followed by ion exchange chromatography on a DEAE cellulose. Capillary zone electrophoresis provided an excellent tool for the analysis of enzymes in the different purification steps. The separation of the enzyme isoformes was achieved in capillary columns coated with polyacryolylaminoetoxyethanol (polyAAEE) at different pH values
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
Ruolo dei ruminanti selvatici, cinghiali e lepri come vettori di patogeni a carattere zoonosico nell’arco alpino lombardo
Full text linkVariations 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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