1,720,959 research outputs found
Distruzione e dispersione del cadavere da macrofauna: rilievi tafonomici in patologia forense
No full textRecognition of the effects of predatory action of macrofauan requires particular conduct by the forensic pathologist engaged in investigation of corpses that have been dismembered or in which the post-mortem transformation processes have proceeded in an unusual manner. In this context, forensic taphonomy has developed investigation procedures that assist in the finding and recovery of missing body parts, determination of time of death and differentiation between vital lesions and post-mortem artefacts. In order to study the application of these taphonomic methods in our regions, the Authors conducted a retrospective analysis of five cases of corpses exposed to predatory action by carrion-eating fauna, in particular Canidae. In this analysis particular attention was given to death cronology aspects in relation to the time of skeletonisation and to the morphological aspects of post-mortem artefacts. A comparison with similar studies in literature confirmed the difficulty of medico-legal assessments in view of the numerous variables that profoundly affect the extent of deteriorationof corpses eaten by Canidae (such as number, species and size) and the need to adopt procedures that allow the greatest possible number of body parts to be recovered during the site visit
Angiosarcoma epatico da pregressa esposizione a cloruro di vinilemonomero: un case report
No full text«Liver angiosarcoma from past exposure to vinyl chloride: a case report». Background: Experimental data and
large occupational cohort studies in polyvinyl chloride (PVC) manufacturing plants have shown that vinyl chloride
monomer (VCM) at high environmental concentrations, such as those measured in western chemical companies at
least until the mid-1970’s can cause liver angiosarcoma. Objective: To describe a recent, accurately diagnosed case
of fatal liver angiosarcoma, for which it was possible to establish the causal relationship with past VCM exposure.
Results: The deceased subject had been working as blue-collar for at least eleven years (1968-1979) in a PVC
plant. VCM exposure was high on average and very high during autoclave cleaning, compared with VCM air
measurements reported in those years at plants in Europe and the United States. The latency period was about 40
years. The duration of exposure, the cumulative exposure and the latency described were similar to those associated
in the scientific literature with an excess risk for liver angiosarcoma. Conclusion: The Italian Workers’ Compensation
Authority (INAIL) has already acknowledged the occupational origin of this neoplastic disease with clear advantages
for all parties concerned, not only in economical terms
Morte improvvisa da neoplasia intracranica: contributo di rara casistica
No full textGli Autori descrivono un caso di morte improvvisa di un individuo di 24 anni a causa di un lipoma sito all'angolo ponto-cerebellare sinistro. Istologicamente il tumore è risultato costituito da tessuto adiposo misto a una componente meningiomatosa e a un neurinoma. Gli Autori si soffermano sulla rarità dei tumori cerebrali quali causa di morte improvvisa e il correlato meccanismo eziopatogenetic
Quadro istologico ed immunoistochimico di SAD (Sudden Asthma Death)
No full textSi descrivono sei casi di SAD (sudden asthma death) in cui il decesso si era verificato entro un'ora dall'inizio dei sintomi ed in cui in anamnesi non vi era positività per stato di male asmatico. L'uso di colorazioni istologiche ed immunoistochimiche particolari su frammenti biologici prelevati in corso di autopsia ha consentito di mostrare peculiarità dei casi caratterizzati da un incremento di collageni IV a livello della membrana basale (ispessita) ed una marcata positività dell'actina come espressione dell'iperplasia delle cellule muscolari lisce. L'ipertrofia muscolare, oltre che della parete bronchiale, ha interessato anche la tonaca muscolare dei vasi con deposizione di tessuto connettivo al posto del tessuto elastico
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
- …
