1,720,979 research outputs found
Programmazione e ruolo della discarica controllata nell’ambito dei sistemi integrati di gestione dei rifiuti
Nuovo Approccio sintetico alle Benzofuro piridine via reazione di aza Wittig/Elettrociclizzazione
Going Beyond Counting First Authors in Author Co-citation Analysis
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
“A New Entry to Benzo[4,5]furo[3,2-b]pyridines via Benzofuran-3-yl phosphorane.”
Mild thermal reaction of enones with N-(benzofuran-3-
yl)iminophosphorane, newly prepared by Staudinger reaction of 3-
azidobenzofuran with triphenylphosphine, provides a synthetic entry to virtually unknown benzo[4,5]furo[3,2-b]pyridines via a tandem aza-Wittig–electrocyclization process.
Key words: iminophosphoranes, azides, aza-Wittig, electrocyclizatio
Problematiche sulla sicurezza connesse ad interventi di risanamento di siti contaminati
Il presente lavoro illustra, oltre ad indicazioni di natura
strettamente tecnica connesse all’intervento ambientale,
anche l’inquadramento generale delle problematiche di
sicurezza e salute dei lavoratori ai sensi dell’attuale Testo
Unico in materia di sicurezza (D.Lgs.81/2008) connesse
alla medesima attività di intervento, suggerendo inoltre le
principali misure di prevenzione e protezione da adottare
sia in fase di cantiere che di gestione del materiale
contaminato rimoss
Variations on the Author
“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
Respirometry and potentiometric stripping techniques for wastewater sludge recovery in geo-environmental applications
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