1,720,990 research outputs found
Diagnosi di enteropatia proliferativa suina da Lawsonia intracellularis.
No full textL'enteropatia proliferativa è una patologia enterica estremamente comune nel suino ed è causata da Lawsonia intracellularis, un batterio intracellulare obbligato. La malattia si manifesta in differenti forme cliniche, tutte caratterizzate macroscopicamente da un ispessimento della mucosa del piccolo intestino e del colon. La modificazione istologica di base è rappresentata da un processo proliferativo di cellule epiteliali immature nelle cripte dell'ileo e del colon, che porta alla formazione di cripte allungate o ramificate. Le cellule proliferate contengono grandi quantità di batterio all'interno del citoplasma. Sono state sviluppate diverse metodiche per la diagnosi della malattia, come tests sierologici e PCR. L’istologia, e in particolare l’immunoistochimica, sono le metodiche migliori per la diagnosi post mortem della malattia
Development of swine farming in Italy: Weakness and risk factors [Evoluzione del comparto suinicolo in Italia: Criticità e fattori di rischio]
No full textIn Italy pig industry is one of the most important sector in livestock husbandry, also as a consequence of the economic value of by-product production. Pig farming is mainly concentrated in Northern Regions where, over the past decade a significant increase in pig population has occurred. In the remaining Regions pig farming is less specialized and it is characterized by small-scale holdings mainly for self-consumption or for small-scale trade. The presence of different pig farming systems determine the coexistence of different: management systems, production scales, health and bio-security standards, market requirements and production costs; all these factors are considered relevant for diseases spreading. Theoretically the application of rigorous prevention measures (bio-security) may modulate the risk of disease diffusion but, data emerged during the surveillance and eradication campaigns, indicate that the bio-security measures applied are too weak to guarantee the status of the entire system. This inconvenience could be overcome throughout the assignment of different levels of risk, to be established throughout the collection of objective parameters on the holding. Trade between farms of the same level of risk and same health standard could guarantee the status of the entire sector and safeguard the economic and market requirements of the different production systems.
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Osservazioni sulla presenza e persistenza del virus della PRRS in tessuti diversi di suini nati da scrofe infettate sperimentalmente
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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
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