1,721,650 research outputs found
Measurements of direct CP violation
No full textWe review the experimental searches and determinations of direct CP violation in meson decays and other systems.We review the experimental searches and determinations of direct CP violation in meson decays and other systems
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
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
Assessing the optimal conditions for surface-mediated disinfection of Influenza A virus solutions
No full textEnvironmental contextTransmission of viruses is related to their survival while being outside the host body. By means of experimental and computational simulations we assess the optimal conditions for virus deactivation upon contact with particularly functionalised substrates. These results constitute the basis for the design of new surfaces with high antiviral activity that can be important in public or sensitive environments such as in hospitals where the contamination and spreading of viruses are a critical issue. AbstractThe abundance of pathogenic microorganisms in the environment and the ease of their transmission through several paths is a critical issue in many daily human activities. Within the different transmission paths, contact with contaminated surfaces provides a chance for the development of surfaces with special characteristics that are able to reduce the spread of microorganisms through their deactivation by contact. The development of 'active' surfaces with antiviral properties requires the understanding of the molecular interaction mechanisms between functionalised surfaces and lipid-enveloped entities. By means of a study based on experimental and computational methods we have assessed that surfaces that are simultaneously hydrophobic and oleophilic are more efficient for disinfecting aqueous virus solutions. The combination of these features causes the disruption of the viral lipid envelope upon contacting the surface, and as a consequence the virus' destruction and deactivation. Our results suggest new and more effective design strategies for functionalised surfaces that may be of interest for applications in sensitive environments
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