1,720,974 research outputs found
Weathering of cristalline-metamorphic roks in the Allaro and Amusa river(Serre massif, Calabria, Italy): general aspects and effects of thermal-metamorphic contact belts
No full textLe argille azzurre dei versanti dell'invaso di monte Cotugno, valle del Sinni (F. 211 - S. Arcangelo). Criteri di correlazione e differenziazione mineralogica, chimica e geotecnica
No full textSono stati studiati i materiali argillosi appartenenti alle argille grigio-azzurre plio-pleistoceniche affioranti nelle aree prossimali alla diga del fiume Sinni in provincia di Matera
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
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
Synthesis and characterization of Zn-doped enstatite
No full textSingle crystals of Zn-doped enstatite (Mg1-xZnx)SiO3 have been synthesized by slow-cooling flux method using two different fluxes. The starting mixtures were first held at a temperature between 1350 and 950 C, and then slowly cooled to the final temperature (600–750 C) at four different rates. The grown crystals were characterized by binocular microscope, X-ray powder diffraction, scanning electron microscopy with energy dispersive spectrometry. When LiCO3, MoO3 and V2O5 were used as flux, Zn-doped enstatite crystals up to 3.5 mm in length grew successfully. They were transparent in color and showed the typical prismatic form. Chemical analyses
on several Zn-doped enstatite crystals showed that the amount of Zn2+ indicated as ZnO wt% ranges from 3.37 to 10.49 wt%. Further characterization by cathodoluminescence and by micro-Raman spectroscopy allowed us to study the effect of zinc dopant on the chemical/physical characteristics of the doped enstatite
Caratteristiche mineralogiche e litostratigrafiche della sezione eo- oligocenica di Massignano (Ancona, Italia) comprendente il limite Scaglia Variegata - Scaglia Cinerea
No full textVengono riportati i risultati dell'analisi minero-petrografica di 57 campioni di calcari marnosi, marne calcaree e marne appartenenti alla sequenza sedimentaria eo-oligocenica affioranti presso Massignano (Ancona)
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