1,720,979 research outputs found
Extraction of Sage Essential Oil by Supercritical CO2: Influence of Some Process Parameters
No full text
Impatti ambientali delle perforazioni petrolifere: il contributo della "scarpa di cementazione"
No full textIl presente articolo affronta, in una prospettiva di ciclo di vita, la valutazione degli impatti ambientali di un manufatto tipico del processo di estrazione del petrolio, la scarpa di cementazione, o float shoe, che costituisce uno degli elementi utilizzati nella cementazione dei pozzi dopo la loro perforazione. L’analisi si basa su un caso studio di un’azienda leader del settore. I dati primari raccolti riguardano la produzione di una scarpa di cementazione -float shoe- in una prospettiva cradle to gate e sono stati elaborati tramite il software CCaLC2 al fine di identificare l’impatto ambientale complessivo e il contributo delle fasi produttive. I risultati ottenuti sono utili sia al completamento degli studi relativi alla valutazione degli impatti del ciclo di vita del petrolio in un segmento della filiera ancora poco investigato, che a fornire agli operatori del settore elementi utili al miglioramento delle performance ambientali del componente in esame
Effect of the technological process from vine to wine on pesticide residues in vernaccia di Oristano cultivar
Full text linkVernaccia is a white grape mostly used to produce a distinct wine protected by the controlled designation of origin (DOC) recognition. It is very susceptible to fungal disease, and it is subjected to a defined management protocol in the field. Winemaking could influence pesticide residues through different mechanisms. This work investigated the influence on pesticide residues of the winemaking process at the industrial level of the wine Vernaccia di Oristano. Thirty-five samples of grapes, two musts, and two vines (both liquid fraction and pellets) were analyzed by using a validated multiresidue LC-MS/MS (Liquid Chromatography with tandem mass spectrometry) method. Data obtained showed the presence in grapes juice of 16 pesticides (8 not allowed in the EU) with mandipropamid and mepanipyrim, the only ones with values higher than their MRL (maximum residue level). Pesticide residues decrease in must was related to the dilution effect due to mixing the grape samples. However, pellets analysis also confirmed the high affinity of pesticides for the suspended material (fenhexamid), whereas the increase in wine to a re-solubilization process from the lees during the fermentation step. The present paper highlighted the effectiveness of the technological process of winemaking to decrease pesticide residues compared to the raw material
Rilocalizzazione di attività produttive su un territorio. Analisi preliminare di sostenibilità di una filiera lana-carne ovina
No full textThe objective of this article is to present the preliminary results of an environmental
sustainability study associated with the “Autoctonie” project, promoted in
2018 by the Fashion and Agribusiness Sections of Confindustria Chieti Pescara
(Abruzzo, Italy). The objective is to promote the revitalization of a short ovine supply
chain based on wool and meat produced in the region. The supply chain will be
analyzed by referring to two scenarios, elaborated according to Industrial Ecology
approaches: a current one, in which the companies involved in the project are forced
to purchase raw materials from foreign markets and a prospective one in which
through the maximization of synergies deriving from a local supply chain, we can
promote the use of products, by-products and derivatives of sheep breeding (in particular
wool and meat, but also milk and leather) by local companies
Isolation of clove bud and star anise essential oil by supercritical CO2 extraction
No full textLEBENSMITTEN WISSENSHAFT UND TECHNOLOGI
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
- …
