125,058 research outputs found
Sedimentology of a pseudomeandering river (Cecina R., central Italy)
No full textPseudomeandering rivers (Wolman & Brush, 1961; Hickin, 1969) or wandering rivers (Church, 1983; Ferguson & Werrity, 1983; Desloges & Church, 1987) have not been studied in as much detail as other river morphologies and hence they are not well known. In recent decades, only a few studies have been carried out on them (Wolman & Brush, 1961; Church, 1983; Ferguson & Werrity, 1983; Desloges & Church, 1987). CANCELLARE LA FRASE 2 LASCIARE LA BIBLIOGRAFIA CHE SOSTIENE LA FRASE 3. Some authors considered pseudomeandering rivers as an unstable stage of transition between braided and meandering morphologies. By this assumption, even a very small variation in the hydraulics, sediment supply or structural setting would determine a change in the channel pattern. According to this hypothesis, pseudomeandering morphology should be just an exceptional, rare case. However, modern examples of pseudomeandering rivers are very common in the Northern Apennines (Orcia R., Ombrone R., Cornia R., Albegna R., Sieve R., Arno R., Cecina R.) as they were in the Pleistocene Valdarno basin (Billi et al., 1987)
Sedimentology of a pseudomeandering river: the Cecina R. (central Italy)
No full textThe study reports about the result of a field investigation on the geomorphology and sedeimntology of a pseudomeandering river. A five phases model of bar evolution is proposed and discussed
Zummo F., Agosta F., Buccione R., Marchesini B., Billi A., Paternoster M. & Caracausi A. 2023. Preliminary results of a crustal-scale, fault-controlled, paleofluid circulation, Contursi Terme (southern Italy). Congresso congiunto SIMP-SGI-SOGEI-AIV “The Geoscience paradigm: resources, risk and future perspectives”, 19-21 Settembre 2023, Potenza.
No full textMorir en los umbrales : Impersonalidad y existencia en Maurice Blanchot
No full textResumen temporalmente no disponible. La presente obra no cuenta con resumen provisto por el autor.Fil: Billi, Noelia. Universidad de Buenos Aires. Facultad de Filosofía y Letras
Morir en los umbrales : Impersonalidad y existencia en Maurice Blanchot
No full textResumen temporalmente no disponible. La presente obra no cuenta con resumen provisto por el autor.Fil: Billi, Noelia. Universidad de Buenos Aires. Facultad de Filosofía y Letras
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Penetrating Ocular Trauma with Retained Intraocular Foreign Body: Management, Follow-Up and Medico-legal Evaluation
No full textIl trauma oculare è la principale causa di cecità monoculare acquisita, pari al 1,97-6% di tali casi. In particolare, le lesioni oculari penetranti sono tra le lesioni agli occhi più comuni con questo tipo di risultato. La diagnosi precoce e la gestione tempestiva sono fondamentali per evitare complicazioni e l'enucleazione particolarmente temuta. In questo articolo, gli autori descrivono la gestione clinica e valutano i risultati visivi e anatomici ottenuti in un caso di lesioni oculari con trattenuta di corpo estraneo intraoculare in un paziente di sesso femminile di 20 anni. Il corso del trattamento ha comportato una combinazione di cheratoplastica penetrante con cheratoprotesi temporanea, facoemulsificazione con impianto di lente intraoculare e pars plana vitrectomia. A tre anni dalla lesione iniziale, il paziente è stato in grado di contare le dita a 30 centimetri e la restitutio anatomica ad integrum del globo è stata raggiunta.Ocular trauma is the leading cause of acquired monocular blindness, accounting for 1.97–6% of such cases. Particularly, penetrating ocular injuries are among the most common eye injuries with this kind of outcome. Early diagnosis and prompt management are crucial to avoid complications and the especially dreaded enucleation. In this article, the authors describe the clinical management, and evaluate the visual and anatomical results obtained in a case of ocular injury with retained intraocular foreign body in a 20-year old female patient. The course of treatment involved a combination of penetrating keratoplasty with a temporary keratoprosthesis, phacoemulsification with intraocular lens implantation and pars plana vitrectomy. At three years from the initial injury, the patient was able to count fingers at 30 centimetres and anatomical restitutio ad integrum of the globe had been achieved
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