2,563 research outputs found
Late and latest Famennian conodonts at the Malpasso section.
No full textConodont biostratigraphic and taxonomic analysis of the Malpasso section were presented by Perri & Spalletta (1991, 1998). The abundant ammonoid fauna was studied by Korn & House (1997) and Korn (1998). In Spalletta & Perri (2001) the section was proposed as possible candidate for the subdivision of the Famennian. The upper part of the section was re-sampled for conodonts and geochemical analysis by Kaiser (2005). The geochemical and conodont data have been reported also in Kaiser et al. (2008, 2009). According to Perri & Spalletta (1998) and Kaiser et al. (2009) the conodont data from the Malpasso section are perfectly correlatable with the ammonoid data of Korn (1998). ). Hartenfels & Becker (2009) on the base of the identification of a typical UD V-A1 ammonoid assemblage, including Endosiphonites sp., Kosmoclymenia lamellosa (Wedekin), Nanoclymenia sp., Nodosoclymenia sp., Rectoclymenia cf. disciforme (Schindewolf), Rect. lineare (Münster), and Procymaclymenia pudica (Czarnocki), and the opportunistic bivalve of eutrophic facies Buchiola in bed ML6k, inferred the position of the Dasberg Crisis Interval between bed ML6k and ML7. The Malpasso section is one of the reference sections of the Pal Grande Formation, showing the typical features of the formation constituted mainly of grey mudstone and wackestone here particularly rich in ammonoids (Spalletta et al., 2015)
ECHOGRAPHIC FINDINGS IN INFANTS WITH ROP
No full textThe authors, before starting the discussion about ultrasound findings in infants with ROP, present a review of the history of ultrasound in this disease. Early A-scan reports are mentioned while the B-scan literature from 1984 to 1988, consisting of seven papers, is reviewed extensively. The most important echo patterns in the various stages of the disease are described along with the most intriguing ones. There is disagreement as to whether it is always possible to show by echography if the retina is in place or not. This is due to the fact that the acoustic properties of the retina seem sometimes to change as time goes by and is quite independent of any technical difficulties which are still very great and the know-how of the examiner. © 1990 Kluwer Academic Publishers
Grand innovation challenges: celebrating 30 years of Industry and Innovation with a special issue
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Alcuni temi marxiani nella teoria economica di Achille Loria: l’esercito industriale di riserva, i limiti del capitalismo e le conseguenze economiche del materialismo storico
No full textAn approach to model the temperature effects on I-V characteristics of CNTFETs
No full textA semi-empirical approach to model the temperature effects on I-V characteristics of Carbon Nanotube Field Effect Transistors (CNTFETs) is proposed. The model includes two thermal parameters describing CNTFET behaviour in terms of saturation drain current and threshold voltage, whose values are extracted from the simulated and trans-characteristics of the device in different temperature conditions. Our results are compared with those of a numerical model online available, obtaining I-V characteristics comparable but with a lower CPU calculation time
CARATTERIZZAZIONE AUTOMATICA DEL MESFET IN GAAS PER IL PROGETTO DI AMPLIFICATORI A MICROONDE A BASSO RUMORE
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Collegamento di teleinformatica tra microcalcolatori e centro di calcolo esterno nel progetto di sistema ottici di telecomunicazioni
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