1,721,003 research outputs found

    Belli-Pasqua (R.), Sculture di età romana in « basalto ». (Coll. Xenia Antiqua ; Monografie ; 2) 1995

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    Marcadé Jean. Belli-Pasqua (R.), Sculture di età romana in « basalto ». (Coll. Xenia Antiqua ; Monografie ; 2) 1995. In: Revue des Études Anciennes. Tome 99, 1997, n°1-2. pp. 272-273

    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

    In vitro antimicrobial activity of essential oils from Mediterranean Apiaceae, Verbenaceae and Lamiaceae against foodborne pathogens and spoilage bacteria

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    The aim of this work was to investigate the antimicrobial activity of twelve essential oils, against Gram-positive and Gram-negative bacteria, for a potential use in food industry. The antimicrobial activity of essential oils was determined by an agar diffusion method against foodborne pathogens and spoilage bacteria. Further, bacteriostatic and bactericidal concentrations were determined for each strain that evidenced sensitivity to the oils. All the oils showed bacteriostatic and bactericidal activity against E. coli O157:H7 and Salmonella Typhimurium, while B. thermosphacta was inhibited by eight of 12 tested oils. Finally, the pathogenic microorganism L. monocytogenes and lactic acid bacteria strains were affected only by thyme, oregano and vervain oils. The essential oils considered in this research showed a satisfactory antimicrobial activity. The essential oils could be used for the development of novel systems for food preservation

    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

    It tempio dorico sotto San Domenico a Taranto

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    Dedicato alla memoria del caro amico Enzo Lippolis, che ci aveva proposto anni fa di riprendere lo studio del tempio rinvenuto nel corso di scavi della Soprintendenza al di sotto della chiesa di San Domenico a Taranto, il contributo cerca di riprendere le fila di un discorso sul monumento ormai interrotto da tempo, sulla base di un rilievo recente e di nuove osservazioni autoptiche da questo derivate. L’obiettivo è stato quello di utilizzare tutti i dati disponibili per proporre una ricostruzione più completa dell’aspetto del tempio nella fase della prima metà del V sec. a.C., inserendolo nell’ambito della ricca stagione dell’architettura greca occidentale sullo scorcio dell’età severa

    Expression of DnaK, HtpG, GroEL and Tf chaperones and the corresponding encoding genes during growth of Salmonella Thompson in presence of thymol alone or in combination with salt and cold stress

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    The expression of four different proteins (DnaK, HtpG, GroEL and Trigger factor Tf) commonly involved in stress response, and the corresponding encoding genes, was studied in Salmonella enterica serovar Thompson. The growth of S. Thompson MCV1 was monitored in the presence of sublethal concentrations of thymol (0.1%) alone or in combination with salt stress (NaCl 0.7%) or cold stress (15°C). Salmonella growth was also monitored in the presence of salt stress (NaCl 0.7%) and also in the presence of cold stress (15°C) alone. During the different growth phases (lag, exponential and early stationary) the expression of dnaK, htpG, groEL and tig genes was studied by quantitative reverse transcription-PCR (qRT-PCR), while the regulation of the corresponding proteins was monitored by 2D-PAGE analysis. Thymol increased the expression of chaperone proteins in all cases except when salt stress was also present. The cold stress increased the levels of expression of the chaperones and this was further enhanced by the presence of thymol. Each stress alone induced a variation in the chaperone regulation and the combination of different stresses together did not always lead to a cumulative response. Our evidence suggests that the response to thymol, salt and cold involves the regulation of all the studied chaperones. This process starts in the lag phase but the chaperones keep working in the further growth phases in order to help Salmonella cells to face the adverse conditions. Our study suggests that adaptation to stress conditions related to food storage takes place through a global response where DnaK, HtpG, GroEL and TF are only part of the protein network that gives support to the adaptation
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