1,720,998 research outputs found
Effect of milk heating on taurine content and on compositional characteristics in Apulian Cacioricotta goat's cheese
No full textEffects of conventional and microwave heating on the degradation of olive oil
No full textA comparative study was performed to evaluate
the effects that microwave (12 and 15 min at
1,100 W) and conventional heating (36 and 45 min at
230 °C) have on olive oil (refined+virgin). The extent of
the oxidative and hydrolytic degradation of the differently
heated oils was evaluated by high performance sizeexclusion
chromatographic analysis of their polar compounds.
The experimental results showed a great degradation
of the oils with values of polar compounds higher
than 26% at the most intense treatment. Significantly
higher amounts of polar compounds, of triglyceride oligopolymers
– known to have adverse effects on human
health – and of oxidised triglycerides were found in microwaved
than in conventionally heated oils, indicating a
higher extent of oxidative degradation
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
Effect of heat treatment on the RCT of the milk of different breeds goats and cow milk
No full textThe eect of heat treatment (70, 80 and 95C, for 1, 3 and 10 min) on the rennet clotting time (RCT) has been evaluated in cow
milk (Bruna Italiana) and in the milks of ®ve goat breeds (Saanen, Camosciata, Ionica, Garganica and Maltese). The RCT of raw
cow milk ranked at an intermediate level compared to that of raw milk of goat breeds examined. With respect to the raw milks, the
RCTs of cow milk became progressively longer as a function of both heating temperature and time, while all the goat milks' RCTs
decreased. Signi®cant (P<0.05 or <0.001) decreases have been registered in the RCTs of the Camosciata, Ionica, Garganica and
Maltese goat milks even after mild heating (to 70C for 1 min), while signi®cant (P<0.05) variations have been observed in the
Saanen goat milk only with intense heating (95C for 1, 3 and 10 min)
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
- …
