1,721,464 research outputs found
Cooperazione allo sviluppo e giustizia socio spaziale: il ruolo delle ong italiane nei processi di riequilibrio
No full textDI BLASI A. (a cura di) Geografia dialogo tra generazioni, Atti del XXIX Congresso Geografico Italian
Municipal waste leachate conversion via catalytic supercritical water gasification process
No full textThe aim of the paper is to investigate the thermal conversion of Municipal Waste Leachate (MWL) to Synthetic Natural Gas (SNG), based on two step process: gasification with water in supercritical conditions (SCWG) followed by a catalytic upgrading of the resulting gas phase. The proposed combination showed advantages in terms of biomass conversion efficiency with respect to the conventional approaches. As the initial biomass liquid phase includes some carboxylic acids, which are the usual intermediate of biomass decomposition process in SCWG, it is expected that the combined effect of catalysis and SCW leads to an increase of syngas yield, together with an enrichment in hydrogen. Experimental tests, carried out by varying MWL flow rate, showed that SCWG technology allows to produce a syngas with a Higher Heating Value (HHV) of about 15–17 MJ/kg. Hydrogen and methane compositions of the produced syngas varied in the range 25–47%v/v and 11–18%v/v, respectively. Syngas upgrading experimental tests were carried out by using a Nickel based catalyst increasing methane SNG fraction up to 50%v/v. © 201
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
Viral infection protocols
No full textThis chapter describes the protocol for preparation of recombinant adenoviruses and infection of target cells to express transiently G-protein-coupled receptors or other proteins of interest. Adenoviruses are nonenveloped viruses containing a linear double-stranded DNA genome. Their life cycle does not normally involve integration into the host genome, rather they replicate as episomal elements in the nucleus of the host cell and consequently there is no risk of insertional mutagenesis. The wild-type adenovirus genome is approx 35 kb, of which up to 30 kb can be replaced by foreign DNA. Adenoviral vectors are very efficient at transducing the gene of interest in target cells in vitro and in vivo and can be produced at high titers (>10(11)/mL). The viral infection has a number of useful features: (1) the efficiency of gene transduction is very high (up to 100% in sensitive cells). (2) The infection is easy and does not alter physically the cell membrane for gene transduction. (3) It is possible to infect cells that are resistant to transfection with plasmids (including nondividing cells)
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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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