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Chiral nanometer-sized structures
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10139.pdf (Publisher’s version ) (Open Access
PK 10139 and quinidine: interactions with digoxin concentrations in rats and dogs
No full textAbstract
Quinidine induced an increase in digoxin plasma concentrations in rats and dogs. PK 10139, an antiarrhythmic agent 10 times more potent than quinidine, did not change digoxin plasma concentrations in these species. The results indicate that PK 10139 could be associated with digoxin without risk of side-effects.</jats:p
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
ПОДХОДЫ В ДИЗАЙНЕ КРИСТАЛЛИЧЕСКИХ МАТЕРИАЛОВ НА ОСНОВЕ КООРДИНАЦИОННЫХ СОЕДИНЕНИЙ (ТИА)КАЛИКС[4]АРЕНОВ И ИХ ФУНКЦИОНАЛЬНЫХ ПРОИЗВОДНЫХ
Get PDFРабота выполнена при финансовой поддержке РНФ, проект № 22-73-10139
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
A comparison of commercial tissue conditioners using International Standard (ISO) 10139-1
Get PDFapplication/pdfThe aim of this study was to analyze the composition of eight commercial tissue conditioners, assess each material using the International Standard (ISO) 10139-1 and relate differences in properties to composition. A visible light spectrophotometer (IR-460: Shimadzu, Kyoto, Japan) was used to analyze the principal components of both liquids and polymer powders. A High Pressure Liquid Chromatograph (HPLC: Shimadzu, Kyoto, Japan) was used to measure the principal ingredients. A gas chromatograph (GC-15A: Shimadzu, Kyoto, Japan) was used to measure the alcohol concentration. Consistency and penetration tests were carried out as detailed in the ISO 10139-1. The penetration test measurements were also made at 2, 3 and 4 weeks. All materials satisfied the standard in the consistency test and in the penetration test after one week. However, three materials failed to satisfy the standard in the penetration test after two hours. In all materials the powder was found to be poly (ethyl methacrylate), while plasticizers and ethanol content varied. Two materials contained other components thought to be antibiotic or antibacterial agents. There appeared to be a correlation between the ethanol content and the consistency results.journal articl
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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