1,721,160 research outputs found
Kinetic analysis and optimization of the heterogeneous reaction system for the enzymatic production of optically active D-amino acid
No full textBiological synthesis of various nanomaterials using recombinant Escherichia coli and their characteristics
No full textCloning and overproduction of thermostable D-hydantoinase from thermophile in E. coli and its application to the synthesis of optically active D-amino acids
No full textEnzymatic synthesis of D-amino acids using thermostable D-hydantoinase: mass production of the enzyme and its application to the synthesis
No full textModeling and kinetic analysis of the reaction system using whole cells with separately-and co-expressed d-hydantoinase and N-Carbamoylase
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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
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
Preparation and characterization of ZnGa2O4 phosphor synthesized with an optimized combustion process
No full textA ceramic synthesis technique, combustion synthesis, is explored to produce blue-emitting ZnGa2O4 phosphors. This technique involves the reaction of metal nitrates with a glycine as an organic fuel. In this article, the effects of processing parameters such as the ratio of glycine to ZnGa2O4 and the heat treatment are reported. The variation of the ratio of glycine to ZnGa2O4 introduces the compositional change in the as-synthesized ZnGa2O4, which in turn seriously influences the luminescence properties. Furthermore, the subsequent heat treatment of the as-synthesized one increases the intensity of the luminescence just after the combustion reaction. In particular, the samples heat treated at above 1200 degreesC show a strong blue-emission peak at 445 nm, which is attributed to the single phase and well-crystallized ZnGa2O4 oxides in the spinel structure. (C) 2003 American Vacuum Society.the International Cooperation Research Program of the Korea Science and Engineering
Foundation
Thermostable D-hydantoinase from thermophiles: characterization and application to the enzymatic synthesis of D-amino acids from 5-substituted hydantoins
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