1,721,034 research outputs found

    Multi-barrier treatment of mature landfill leachate: Effect of Fenton oxidation and air stripping on activated sludge process and cost analysis

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    A multi-barrier approach including advanced oxidation by Fenton (FO), air stripping (AS) and biological activated sludge (B-AS) processes was investigated as possible treatment of mature landfill leachate (MLL) in an urban wastewater treatment plant (UWTP). Three different conditions were compared to the control line (B-AS treatment of simulated urban wastewater (SWW)): MLL pre-treated with FO process and diluted to 17% with SWW; MLL pre-treated with AS and diluted to 17% with SWW; MLL pre-treated with FO, AS and diluted to 17% with SWW. Preliminary tests aimed to investigate the best operating conditions of FO for MLL (pH = 3, t = 120 min, H2O2/Fe2+ = 1, H2O2= Fe2+ = 3500 mg/L) were carried out with regard to COD removal (82%) and biodegradability (BOD5/COD = 0.32). FO and AS were very efficient to remove COD (82%) and NH3 (92%) respectively, before pre-treated MLL was mixed to SWW. The multi-barrier treatment (FO + AS + B-AS) was very efficient to remove COD (85%) and NH3 (79%). Furthermore, the absence of one of the two pre-treatments, FO or AS, adversely affected the biological process, by reducing COD (47%) and NH3 (14%) removal efficiency, respectively. The management cost analysis showed that the investigated multi barrier system is economically feasible only at low dilution ratio between FO-AS pre-treated MLL and real urban wastewater (<3% under the investigated conditions)

    The EARLY ACS study

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    commento critico alla pubblicazione dei dati dello studio internazione randomizzato early ac

    The Good Place. Le comedy di Mike Schur e l’approdo sicuro in mezzo alle tempeste

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    Una riflessione sulle sitcom firmate da Mike Schur (The Office, Parks and Recreation, Brooklyn Nine Nine, The Good Place) e sul loro ruolo nel racconto degli Stati Uniti contemporanei

    Ave Cesare! The Very Last Picture Show.

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    Il saggio analizza il film "Hail Caesar!" di Joel e Ethan Coen

    Black Panther e la persistenza del blockbuster

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    Il saggio qui proposto offre un’analisi di economia politica del film blockbuster, del suo ruolo nel sistema mediale contemporaneo e delle sue più recenti tendenze utilizzando come esempio Black Panther di Ryan Coogler del 2018. L’analisi seguirà due direttrici. La prima consiste nel rintracciare nel film la formula del blockbuster coniata da Lo squalo e che da allora persiste come scheletro di tutte le produzioni commerciali ad alto costo. La seconda mira invece a identificare gli elementi di novità più significativi offerti dal film di Coogler. In altre parole, il saggio guarda a Black Panther in un’ottica dialettica tra continuità e discontinuità rispetto al passato, tra tendenza a reiterare una formula e retorica dell’innovazione, andando quindi ad indagare quelle tensioni di fondo su cui in realtà da sempre si basa il fascino e il successo dei blockbuster statunitensi

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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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