1,721,060 research outputs found
Enriched H2 by steam gasification of almond shells and on line purification with a PRISM membrane separator
No full textModified dolomite in biomass gasification with simultaneous tar reformation and CO<sub>2</sub>capture: effect of metal loading
No full textCarboxylic acids by methanol carbonylation with syngas using polymer-supported rhodium catalysts
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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
Hydrogenation of CO over Rh/SiO2-CeO2 catalyst: kinetic evidences
No full textThe CO hydrogenation over Rh/SiO2-CeO2 was investigated kinetically in order to find the rate equation as a function of
CO and H2 partial pressures. Relative to previous findings obtained with Rh/SiO2 a fairly higher dependence on adsorbed
CO is evident. Together with additional evidences found by TPD/TPR and IR spectroscopy, this higher dependence has
been tentatively associated to a CO in which both the carbon and the oxygen ends are bonded to Rh and Ce3C, respectively.
The influence of the support has been emphasized in order to ascertain the role of CeO2 (promoter) relative to Rh/SiO2. In
agreement with previous findings we have found that with Rh/SiO2-CeO2 catalysts, the promoter inhibits the total activity
while favoring the formation of EtOH
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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