1,721,012 research outputs found
Indovina chi viene a cena? La rappresentazione degli afroamericani nel doppiaggio italiano di "The Jeffersons"
No full textAn analysis of the treatment of race in the dubbed-into-Italian version of "The Jeffersons", the popular CBS sitcom about an African American family (1975-1985)
Elisa Bordin e Anna Scacchi (a cura di), Transatlantic Memories of Slavery: Reimagining the Past, Changing the Future
No full textReview of Elisa Bordin e Anna Scacchi (a cura di), Transatlantic Memories of Slavery: Reimagining the Past, Changing the Futur
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
Detection, characterization and phytotoxic activity of the nucleoside antibiotics Blasticidin S and 5-hydroxymethyl-Blasticidin S
No full textScreening for herbicidal compounds carried out on culture broths of Streptomyces strains isolated from soil resulted in the detection of potent phytotoxic activity. The active principles were isolated, and identified as the nucleoside antibiotics Blasticidin S (Bl-S) and 5-Hydroxymethyl-Blasticidin S (H-M-Bl-S). Bl-S was more active than H-M-Bl-S on seedling germination in petri dishes and in postemergence greenhouse tests. Moreover both antibiotics were more phytotoxic to dicotyledonous than to monocotyledonous plants. The increased sensitivity of dicots was confirmed in carrot and rice cell cultures. Both compounds also inhibited [C-14]amino acid incorporation into proteins of rice and carrot cell cultures. Protein synthesis was more affected in carrot than rice
Herbicidal activity of dealanyl ascamycin, a nucleoside antibiotic
No full textA strongly phytotoxic activity was detected on screening culture broths of soil streptomyces strains for herbicidal compounds. The active principle was isolated and identified as dealanylascamycin, an already described nucleoside antibiotic affecting bacterial protein synthesis. This compound strongly inhibited growth and development of both plant seedlings in Petri dishes and whole plants in pre- and postemergence tests, as well as the growth of cultured plant cells. Monocot and dicot species were similarly affected. The inhibition was more pronounced on roots than on shoots, while the germination rate was only slightly reduced. A preliminary investigation on the herbicidal mode of action of dealanylascamycin was carried out by studying its effects on respiration and protein synthesis rates both in short- and in long-term experiments. The former were performed on rice- and carrot-cultured cells by monitoring oxygen consumption and radioactive amino acid incorporation rates, the latter on barley or common cowpea seedlings by following oxygen consumption and alpha-amylase accumulation rates. While short-term exposure to antibiotic concentrations close to those causing severe growth inhibition did not appear to affect the investigated parameters substantially, long-term treatment led to remarkable, though not dramatic, effects. Such effects, as judged by comparison with those induced by cycloheximide and chloramphenicoI, could not be ascribed to a primary inhibition of plant-cell protein synthesis
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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