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Archeologia del gesso in Sicilia Il complesso Grotte Inferno a Cattolica Eraclea
No full textRIASSUNTO - Archeologia del gesso in Sicilia. Il complesso grotte Inferno a Cattolica Eraclea.
La grotta Inferno, nel territorio di Cattolica Eraclea, è la prima cava romana di lapis specularis identificata
in Sicilia. La ripresa delle indagini geo-archeologiche ha permesso di chiarire i processi di formazione
geologica e l’utilizzo della cavità come cava di lapis specularis in età romana.
La recente scoperta di lastrine di lapis specularis nell’area del complesso monumentale del tempio romano della Valle dei Templi di Agrigento rappresenta la prima testimonianza in Sicilia della presenza di lastre di
lapis in contesto archeologico. Analisi isotopiche di alcuni campioni di cristalli della grotta Inferno e dal
butto tardoantico del tempio romano di Agrigento, hanno confermato che i cristalli siciliani non furono
utilizzati per le finestre di Pompei e che, probabilmente servivano esclusivamente per un mercato locale.SUMMARY- Gypsum archeology in Sicily. The Grotta Inferno complex in Cattolica Eraclea.
The Grotta Inferno is located in the municipality of Cattolica Eraclea (Agrigento); it opens in the Messinian
gypsum outcrops. The geo-archaeological investigations have allowed to clarify the geological formation
processes and the use of the cave as a quarry of lapis specularis exploitation in Roman times. Recently in the
area of the Roman Temple of the Valley of Temples in Agrigento, several fragments of lapis have been found
in a dump of the 4th-5th century CE. This is the first evidence for the use of transparent gypsum crystals in
an archaeological context in Sicily. Isotopic analyses carried out on crystal samples from the Inferno cave
and from the throat of the Roman temple of Agrigento, have ruled out that the Sicilian crystals were used in
the windows of Pompeii. The quality of the Sicilian crystals is clearly inferior compared to those from Spain
and Turkey. It is therefore probable that the crystals exploited in the Inferno cave were exclusively used for
the local market
Special Issue of the Papers of Social Representations "SEMIOTICS AND SOCIAL REPRESENTATION: A MUTUAL CULTIVATION"
No full textPetrophysical properties variation of bitumen-bearing carbonates at increasing temperatures from laboratory to model
No full textVariations in reservoir seismic properties can be correlated to changes in saturated-fluid properties. Thus, the determination of variation in petrophysical properties of carbonate-bearing rocks is of interest to the oil exploration industry because unconventional oils, such as bitumen (HHC), are emerging as an alternative hydrocarbon reserve. We have investigated the temperature effects on laboratory seismic wave velocities of HHC-bearing carbonate rocks belonging to the Bolognano Formation (Majella Mountain, central Italy), which can be defined as a natural laboratory to study carbonate reservoir properties. We conduct an initial characterization in terms of porosity and density for the carbonate-bearing samples and then density and viscosity measurements for the residual HHC, extracted by HCl dissolution of the hosting rock. Acoustic wave velocities are recorded from ambient temperature to 90°C. Our acoustic velocity data point out an inverse relationship with temperature, and compressional (P) and shear (S) wave velocities show a distinct trend with increasing temperature depending on the amount of HHC content. Indeed, samples with the highest HHC content show a larger gradient of velocity changes in the temperature range of approximately 50°C-60°C, suggesting that the bitumen can be in a fluid state. Conversely, below approximately 50°C, the velocity gradient is lower because, at this temperature, bitumen can change its phase in a solid state. We also propose a theoretical model to predict the P-wave velocity change at different initial porosities for HHC-saturated samples suggesting that the velocity change mainly is related to the absolute volume of HHC
Psychology of Reflexivity and reflexivity for psychology
No full textA long tradition has produced a misleading interpretation of the categories
of idiographic and nomothetic. Such an interpretation has hindered
the development of psychology and more in general of social science. “Idiographic”
has been treated as a matter of identity, an ideological approach
that continues to be reproduced through the conflict with what-is-outside-it
viii S. Salvatore, G. Marsico, and R. Andrisano-Ruggieri
(i.e., nomothetic mainstream psychology). Far from such a militant ritualization
of the concept, YIS aims at promoting a return to the origin of
what Windelband (1904/1998) proposed, namely the idea of idiographic
and nomothetic as categories depicting two complementary—rather than
alternative - forms of knowledge building
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
Influence of the Plio-Pleistocene tectonics on the evolution of the Purgatorio polje (north-western Sicily)
No full textThe evolution of large landforms such as polje are related in most cases to geological events affecting a specific areal context and/or to climatic events which, in combination with the tectonics, affect the karst base level, in a more or less pronounced manner depending on the proximity of limestone karst mountains to the coastline. The genesis of these aforementioned
forms depends primarily on structural and lithological factors, their evolution is instead controlled by tectonic and climaticeustatic factors in the reliefs close to the coast. In the inland, due to the distance from the coast, the effects of the latter factors on the karstification process could be less, or very bland, in respect to the predominant tectonic movements. In this
context, the Purgatorio polje, in the north-west of Sicily, activated in the Middle Pleistocene and regressed to a relict form at the end of the Upper Pleistocene–Holocene, can be seen as a result of the tectonic events that have lifted, and still lift,the Monti di Capo San Vito in differential blocks, with a consequent lowering of the erosion base level
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
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