1,721,336 research outputs found
Notule 190-197. In MARCHETTI D. (ED): Notule pteridologiche italiche VIII (178-211).
No full textSi segnalano nuove stazioni di alcune pteridofite interessanti. È rilevante soprattutto la scoperta di Cosentinia vellea (Aiton) Tod. subsp. bivalens (Reichst.) Rivas Mart. et Salvo x C. vellea (Aiton) Tod subsp. vellea e di Dryopteris affinis (Lowe) Fraser-Jenk. subsp. affinis x D. tyrrhena Fraser-Jenk. et Reichst. Ma, su un totale di 34 taxa presi in considerazione, molti altri sono importanti
Analisi agli elementi distinti e possibile evoluzione di un fronte di cava in calcari fratturati e carsificati.
No full text
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
Istopatologia forense
No full textVengono descritti e discussi gli aspetti istologici delle patologie dei vari organi (cervello, cuore, polmoni, cute, rene, fegato, apparato gastrointestinale, cute, utero, ovaia, placenta) di interesse del patologo forense, con particolare attenzione al tipo di colorazioni da privilegiare, nonchè i problemi legati alla diagnosi differenziale
Istopatologia forense
No full textSommario: 1. Il laboratorio di istopatologia forense. – 1.1. M.O. e sue finalità. – 1.2. Immunoistochimica.
– 1.3. Ibridizzazione in situ. – 1.4. Estrazione del DNA dai tessuti.– 1.5. Metodi di conservazione degli organi. – 1.6. Il Microscopio elettronico e sue finalità. – 2. Processi patologici: generalità. – 3. Il Sistema Nervoso. – 3.1. Alterazioni microscopiche del Sistema Nervoso Centrale nelle lesioni traumatiche. –3.1.1. Danno cerebrale primitivo (Contusione cerebrale, Danno assonale). – 3.1.2. Complicanze secondarie al trauma (Edema cerebrale, Danno ipossico, Infarto cerebrale).– 3.1.3. Emorragie intracraniche (Subdurale, Subaracnoidea, Intraparenchimale). – 3.2. Aspetti microscopici degli emboli cerebrali (Embolia adiposa, Embolia gassosa, Microemboli settici). – 3.3. Microtrombi. – 3.4. Lesioni dei vasi cerebrali (Aneurismi, Necrosi acidofila, Del sistema vertebro-basilare, Vasculiti). – 3.5. Alterazioni post-traumatiche dell’ipofisi. – 4. Il sistema scheletrico. – 4.1. L’identificazione dell’età attraverso l’esame microscopico. – 4.2. L’esame istologico di frammenti di osso allo scopo di valutarne l’origine o meno umana. – 5. La cute. – 5.1. Le lesioni d’arma da fuoco. – 5.1.1. Foro d’entrata. – 5.1.2. Foro d’uscita. – 5.1.3. Problemi di diagnosi differenziale. – 5.2. Alterazioni cutanee da calore e da passaggio di elettricità. – 5.2.1. Le lesioni da calore. – 5.2.2. Le lesioni da elettricità. – 5.3. Lesioni termiche da freddo. – 5.4. Lesioni cutanee da laccio nell’impiccamento.– 5.5. I segni di agopuntura. – 6. Il cuore. – 6.1. Alterazioni ischemiche della cellula miocardica. – 6.2. Modificazioni del sistema di conduzione e di innervazione cardiaca. – 6.3. Complicanze cardiovascolari dei traumi chiusi del torace. – 6.4.Miocarditi. – 6.5. Aspetti microscopici delle cardiomiopatie (Cocaina-correlate, Alcool- etilico associate, Aritmogena del ventricolo destro, Ipertrofica). – 6.6. Alterazioni microscopiche correlate a farmaci, sostanze stupefacenti ed a sostanze tossiche inorganiche. – 7. Il Polmone. – 7.1. Alterazioni istologiche nelle asfissie meccaniche violente. – 7.2. Le embolie polmonari. – 7.3. Il polmone nello shock allergico. – 7.4. Il polmone fetale e del prematuro. – 7.5. Alterazioni correlate a farmaci, a sostanze stupefacenti ed all’assunzione di sostanze tossiche inorganiche. – 7.6. Le modificazioni post-mortali. – 8. Il fegato. – 8.1. Alterazioni correlate a farmaci, a sostanze stupefacenti ed all’assunzione di sostanze tossiche. – 8.2. Le modificazioni postmortali. – 9. Il tratto gastrointestinale. – 9.1. Le lesioni da calore. – 9.2. Le alterazioni microscopiche correlate a farmaci ed a sostanze tossiche. – 9.3. Lesioni della mucosa gastrica nei casi di annegamento. – 10. Utero, Ovaio, Placenta. – 11.Il rene. – Fonti bibliografiche
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
Postmortem artifacts made by ants and the effect of ant activity on decompositional rates.
No full textAnts belong to the family Formicidae of the order Hymenoptera and they are one of the world's dominant insect groups. Ants can be present at all stages of carrion decomposition as they are typically observed shortly after death or during the early postmortem period, but even later once the fly maggots had left the body. Their role in the faunal succession varies from predator on the eggs and larvae of other insects (mainly Diptera), thus reducing significantly the rate of decomposition, to scavenger on the flesh or exudates from the corpse itself. As they can deeply affect the occurrence of cadaver entomofauna, the presence or absence of ants should be taken into account in every case involving postmortem interval estimates based on entomological evidence. In fact, the effects of ants on carrion reduction seem to be mainly dependent on species, on their amount or abundance, and on geographic area. The feeding action of ants can cause many irregular, serpiginous, scalloped areas of superficial skin loss, and small punctate and scratch-type lesions may be often observed on the body, which are the result of postmortem ant bites. Usually ant injuries are orange-pink to yellow in color and diffusely scattered over the skin surface. These injuries consist of small and rather shallow gnawed holes that can be easily misinterpreted as antemortem abrasions or resulting from strong acids. No bleeding is associated with such skin lesions but sometimes considerable hemorrhage can take place, especially where removal of superficial layers of skin occurs in congested parts of the body. As ants attack the uncovered areas of the body, ant bites can frequently give rise to suspicion especially if located on the neck mimicking antemortem injuries. They are also occasionally misinterpreted as patterned abrasion due to the imprinted effect of a blunt or offending object. On closer inspection, artifacts made by ants can be immediately apparent especially when the ants are identified upon the body, but final diagnosis can be only confirmed at the autopsy by gross and microscopic analysis. The features of such lesions will be illustrated in detail by reviewing some interesting forensic cases
- …
