1,722,158 research outputs found
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
A long-term gluten-free diet as an alternative treatment in severe forms of dermatitis herpetiformis.
Full text linkBACKGROUND:
A long-term gluten-free diet (GFD) as a first-choice treatment for dermatitis herpetiformis (DH) has been used successfully. The aim of the present study is to evaluate the possibility of treating all severe skin manifestations of DH by a GFD only.
METHODS:
Seventy-two patients with DH were subdivided in two groups: group A (18 patients) underwent a GFD and received dapsone; group B (54 patients) underwent a GFD. Patients were subdivided into slight, moderate and severe forms.
RESULTS:
A total of 88.9% of patients treated with dapsone and a GFD (group A) had remission of skin manifestations and the remaining 11.1% were improved. In group B, 87% of patients showed complete remission of skin manifestations after 18 months of a GFD; 13% showed improvement. With regard to severe forms, after an 18-month treatment, 70.4% of patients in group B; 66.6% in group A.
CONCLUSION:
Our study shows that a GFD, if administered steadily and for a long period, can be a valid treatment for severe forms of DH. Dapsone can be useful to control the inflammatory phase of the disease
The contribution of universities to local/regional economic development: towards an analysis of research spillovers in Genoa and Pisa
No full textA revision of the chelonian fauna from Allatini. (Thessaloniki, Macedonia, Greece, latest Miocene-earliest Pliocene)
No full text
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
Italian Cenozoic crocodilians: taxa, timing and palaeobiogeographic implications
No full textCrocodylian remains are collected in 39 fossil-bearing localities but only in seven localities specimens with reliable
taxonomic attributions, at least to genus level have been collected. Three species have been reported from the early Lutetian
Purga di Bolca site: Pristichampsus cf. Pristichampsus rollinati, Asiatosuchus sp., Hassiacosuchus sp. ( = Allognathosuchus
sp.). The three crocodilians discovered at Purga di Bolca have been reported also from Geiseltal and Messel (Middle
Eocene, Germany). Bolca at that time was part of a Tethysian archipelago and no mammals have been found there till now.
Crocodilians and turtles clearly arrived from the European mainland across a marine water barrier. Among the other
fossiliferous localities of Veneto, very interesting is the Monte Zuello site, of late Middle Eocene age, yielding a
longirostrine crocodilian, Megadontosuchus arduini, a tomistomine species. Tomistomines are known in contemporaneous
sediments of both Europe and Africa, but the European forms Dollosuchus and Kentisuchus seem the closest taxa. Remains
of Oligocene age have been collected in Veneto and Liguria, but the fossils discovered in the second region are teeth or
fragmented bones. The fossil crocodilians of Monteviale (Veneto), of Early Oligocene age, have been assigned to two
species but they have been recently all identified as Diplocynodon ratelii, known from several European sites of Late
Eocene, Oligocene and Miocene age. This species arrived in the Monteviale area from the European mainland across a
narrow sea. Several crocodilian fossils of Miocene age are very fragmentary or represented by isolated teeth. In the Middle
and Late Miocene of Sardinia, a well-established species, Tomistoma calaritanum is present. Remains of Tomistoma of the
same age have been reported in some localities in Tuscany, Apulia, Sicily and Malta. In the Mediterranean area, the genus is
known from European and African sites (of older age). The colonisation of Europe by this genus is the result of a
dispersion from Africa (or less probably from Asia). During Late Miocene Sardinia and Tuscany belong to the same
palaeobioprovince characterized by the Oreopithecus–Maremmia fauna. In Tuscany, a crocodilian identified as Crocodylus
bambolii is present in the late Miocene site of Monte Bamboli. If the generic attribution of this form is correct, its ancestors
must have arrived from Africa. Another fossil assemblage of Late Miocene age characterizes the Apulia–Abruzzi
palaeobioprovince (Hoplitomeryx–Microtia fauna) and testifies complete isolation between the two palaeobioprovinces. In
this last area, remains of Crocodylus sp. have been collected in coastal sandstones at Scontrone (Abruzzi) and in several
fissure fillings of Gargano of slightly younger age. The ancestors of this species arrived from Africa while no African
elements are present among the mammalian fauna. The dispersion of the genus Crocodylus in the Italian palaeoislands may have taken place once, with allopatric differentiation of the two populations (Tuscany–Sardinia and Apulia–Abruzzi) or
twice with independent colonisation of each area
The last occurence of Latonia (Anura: Discoglossidae) and the early Pleistocene herpetofauna of Pietrafitta (Central Italy)
No full textThe well-known fossiliferous lignite quarry of Pietrafitta (Umbria, Central Italy) yielded an abundant vertebrate assemblage that has been referred to the Farneta Faunistic Unit (Late Villafranchian, Early Pleistocene). The lignite lithosomes are a good example of plant matter accumulated in situ, over a relatively extended period of time, in a system of mashes at the periphery of a lacustrine intermontane basin. The occurence of fossil amphibians and reptiles has been quoted since 1977 by Ambrosetti & co-workers, while the chelonian fauna has been described by Kotsakis & Gregory in 1985. The recent analysis of all the material recovered so far allows to identify the presence of the following 2 amphibians and 4 reptiles: Latonia sp., Rana gr. R. ridibunda, Emys orbicularis, Colubrines indet., Natrix sp. and Vipera ammodytes. Anuran and snakes fragments devoid of taxonomical value probably belong to the above mentioned taxa. The amphibian remains outnumber those of the reptiles and, not considering the European pond terrapin, they represent nearly entirely the fossil herpetofauna. From a paleoecological point of view, although the taphonomical conditions of lignite deposit strongly bias the taxonomic composition of the fossil assemblage (it is unlikely that very small and delicate skeletons are preserved and recovered), the relative abundance of anurans and pond terrapins strengthens the presence of a humide environment with permanent water. All the fossil remains are isolated from the matrix and, with the exception of the chelonians whose shells are sometimes perfectly preserved, all the skeletal elements are completely disarticulated. A specimen of Latonia, although disarticulated, is represented by several elements found in a disordered group. The most important element of the Pietrafitta herpetofaunistic assemblage is represented by the large frog Latonia. According to a recent summary by Rage & Rocek, this genus seems to appear in the earliest Oligocene of France (MP 21), in the Miocene it is widespread from Spain to Russia, while in the Pliocene it is rather rare in Central Europe but still common in the Mediterranean area. It was thought to disappear at the end of the Pliocene but the Pietrafitta remains testify its survival into the Quaternary. The unquestionable presence of smooth maxillae contrast with the diagnosis of the only Pliocene species L. gigantea, and requires to reconsider the taxonomy of the genus or the specific chronological ranges
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