1,720,960 research outputs found
Epidemiologia delle virosi respiratorie nel capriolo in provincia di Bologna
No full textA seroepidemiological survey has been carried out in roe deer and sympatric cattle in the Bologna Province. The following prevalences has been found: 52% to PI-3 Virus and 6% to BRSV in roe deer and of 67% and 54%, respectively, in cattle. Comparative analyses show that PI-3 Virushits indifferently both host species, with possible reciprocal transmission between them. Cattle seem to repreent the reservoir of BRSV, with sporadic infection in roe deer population. Antibodies to IBR Virus have not been found n roe dee
Esempio di un modello preda-predatore per lo studio dell'ecologia di Trichinella britovi
No full textModelli previsionali sono stati applicati all'infezione a ciclo silvestre da Trichinella britovi, considerando fertilità,attesa di vita, capacitàportanterelative alle specie predatrici più coinvolte nell0infezione (volpe, lupo, mustelidi
Utilizzo di un modello matematico per lo studio dell'epidemiologia dell'echinococcosi nel lupo in Italia
No full textStudy on Ticks and Tick-Borne Zoonoses in Public Parks in Italy.
No full textA survey on tick density and on tick-borne zoonoses was carried out in four public parks in the outskirts of Imola (northern Italy) from June to October 2006. All stages of Ixodes ricinus and only larvae of Riphicephalus sanguineus were recovered by dragging, performed on 100-m transects. Almost all ticks (99%) were harvested in one park. I. ricinus density (nymphs/100 m(2) ) ranged from 0 in park L to 6.3 in park F. Nymphs and adults of I. ricinus were subjected to PCR for Anaplasma phagocytophilum, Bartonella spp., Borrelia burgdorferi s. l. and Rickettsia spp. The observed prevalences were 38.3% for Bartonella henselae, 5.2% for Bartonella clarridgeiae, 10.4% for B. burgdorferi s. l., 2.6% for Rickettsia helvetica and 13% for Rickettsia monacensis, respectively. No DNA of A. phagocytophilum was found. Acarological risks (AR) were calculated as probabilities of collecting at least one infected nymph per transect. The AR values calculated for the various zoonotic agents were 11.4% for R. helvetica, 27.7% for B. clarridgeiae, 49.7% for B. burgdorferi s. l., 57.2% for R. monacensis and 90.4% for B. henselae, respectively. In this study, B. clarridgeiae was for the first time identified in I. ricinus ticks
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
Rischio acarologico per alcune zoonosi in parchi pubblici della provincia di Bologna
No full textLo studio è stato condotto nel periodo giugno-ottobre 2006 in 4 parchi pubblici del Comune di Imola (BO), differenti per vegetazione e fauna. Le zecche sono state raccolte tramite dragging lungo transetti di 100 m in corrispondenza di percorsi frequentati dai visitatori, rilevando temperatura e umidità relativ.a e con una frequenza complessiva di 33 interventi mensili. Il DNA estratto da ninfe e zecche adulte è stato sottoposto a PCR per l'identificazione di Anaplasma phagocytophilum, Bartonella spp., Borrelia burgdorferi s. l., Rickettsia spp. . Sulla base delle prevalenze di infezione nei vettori raccolti e della loro densità è stato calcolato il Rischio Acarologico, ovvero la probabilità di rinvenire almeno una ninfa infetta lungo un transetto di 100 m
Ticks distribution and zoonotic risk in urban parks of Imola: preliminary results.
No full textThe aim of study is to evaluate the distribution of ticks in urban and periurban parks of Imola (Bologna) and to determine the widespread of pathogens as Borrelia burgdorferi s.l., Bartonella spp., and Anaplasma phagocytophilum.33 dragging were carried out in 4 parks (Acque Minerali, Lungofiume, Tozzoni, Bosco della Frattona). 641 ticks were harvested, 98,8% of these in Bosco della Frattona. 82,7% were Ixodes ricinus, 17,3% were Riphicephalus sanguineus. The highest density were observed in Bosco della Frattona (6,2 nymphs /100 m2; IC = 3,7-10,1); in the Lungofiume park no one tick was harvested. Borrelia burgdorferi s.l. and Bartonella spp. presented prevalences of 10,5% (IC=5,5%-17,6%) and 60,5% (IC=50,9%-69,5%) respectively. No one tick was infected with Anaplasma phagocytophilum. We concluded that ticks are present also in urban and periurban habitat and could represent a treat for public health
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