1,721,373 research outputs found
Análisis de algunos aspectos físicos, químicos y microbiológicos de las muestras de miel producidas y consumidas en Turquía
Full text linkAnalysis of honey produced in the western part of Turkey was carried out in this
study. Fifty honey samples, collected from the local market in this region were analyzed
for their physicochemical parameters including hydroxymethylfurfural (HMF), electrical
conductivity, sucrose, free acidity, moisture and water insoluble impurities, in addition
to pathogenic microorganisms present. HMF amounts determined in 47 samples
were found to be between 1.9 and 98.0 mg/kg with good reproducibilities (%RSD:
3.2% or better). There were no pathogenic microorganisms in any of the investigated
samples. Electrical conductivity that gives information about their mineral contents was
measured, and the mean value was found to be 0.33 mS/cm (N=34). In general, most
of the samples were considered to meet the requirements of Turkish Food Codex and
European Commission Directives.En este estudio se analizó muestras de miel producida en la zona oeste de Turquía.
Se trabajó con 50 muestras del mercado local de la región, en las cuales se determinaron
parámetros físico-químicos incluyendo el hidroximetilfurfural (HMF), conductividad
eléctrica, sacarosa, acidez libre, humedad e impurezas insolubles en agua además de
microorganismos patógenos presentes. Las cantidades de HMF determinadas en 47
muestras oscilaron entre 1,9 y 98,0 mg/kg con buena desviación estándar de la reproducibilidad
(% de RSD/DSR 3,2% o mejor). No se encontraron microorganismos
patógenos en ninguna de las muestras analizadas. La conductividad eléctrica, que aporta
información sobre el contenido mineral, resulta en un promedio de 0,33 mS/cm (N=34).
En general se encontró que la mayoría de las muestras cumple los requerimientos del
Codex alimentario turco y de las directivas de la Comisión Europea.Fil: Bakirdere, Sezgin.
Universidad Técnica de Yıldız (Turquía)Fil: Yaroglu, Tolga.
Universidad de Ankara (Turquía)Fil: Tirik, Nihan.
Ondokuz Mayıs University (Turquía)Fil: Demiroz, Mehmet.
Uludag University (Turquía)Fil: Karaca, Abdullah.
Fırat University (Turquía
Introduction for the 12th Aegean Analytical Chemistry Days (AACD 2023) Conference Special Issue in Analytical Letters
No full textSolid Phase Microextration Strategies in the Determination of Organic/Inorganic Analytes
No full text
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
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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