1,721,026 research outputs found
Microgels and nanogels with catalytic activity
No full textMolecular imprinting has grown considerably over the last decade with more and more applications being developed. The use of this approach for the generation of enzyme-mimics is here reviewed with a particular focus on the most recent achievements using different polymer formats such as microgels and nanogels, beads, membranes and also silica nanoparticles. © 2010 Springer-Verlag Berlin Heidelberg
A streoconvergent approach to dicyclopenta(a,d)cyclooctane terpenoids via a very mild Cope reaction
No full text«Nel loco suo de Patergnone». La residenza di Girolamo Poncini nel contado di Bergamo
No full textA partire dal XV secolo la famiglia Poncini, in via di affermazione sul panorama cittadino di Bergamo grazie ai proventi dell'attività mercantile, avviò l'acquisto di appezzamenti di terra nella media pianura bergamasca, nei pressi della località Padergnone (Zanica), luogo che in seguito fu scelto da alcuni esponenti del casato per la costruzione di una dimora extraurbana e dell'azienda agricola annessa. A Girolamo di Simone Poncini spettò in particolare la trasformazione dell'antico castello lì esistente in "residenza dominicale", attraverso l'ammodernamento delle strutture e l'apertura di nuovi cantieri. L'articolo propone l'analisi di tre episodi della committenza di Girolamo, corrispondenti alla costruzione del nucleo abitativo con portico e loggia (1508), al rimaneggiamento della torre medievale (1510) e al rinnovamento della cappella castrense (post 1513). I cantieri inaugurati da Girolamo furono condotti a compimento dai suoi discendenti, come dimostra il caso della citata loggia, decorata ad affresco nella seconda metà del secolo. Ciò che resta oggi di quella campagna decorativa è uno strappo di affresco raffigurante una rara carta topografica del territorio bergamasco, conservato presso il Museo Diocesano di Bergamo, databile attorno agli anni settanta del Cinquecento e attribuita all'ambito di Cristoforo Sorte
Asymmetric synthesis of 4(R)-tert-butyl-8a(S)-hydroxycarbonyl-4,6,7,8,8a,9-hexahydro-1-alkylpyrrolo(3,2-f)indolizines via intramolecular iminium ion cyclization
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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
The unusual reactivity of 9-oxa-4-thia-tetracyclo(5.5.1.02,7.010,13)tridecan-12-one-3-spiro-1'-cyclopentan-3'-ones: a molecular modeling study
No full textVariations 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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