1,720,990 research outputs found
Il consumatore celiaco e le valutazioni sensoriali dei prodotti senza glutine : un caso studio : il pane in cassetta
No full textA rise in celiac consumers has increased interest of food companies towards research and development of food substitutes, which are more sensorily acceptable.
The aim of this study was to provide a sensory, chemical-physical characterization of six types of gluten-free sliced bread.
Products were evaluated by ten trained judges using the sensory profile method, and 17 descriptors were identified. Results from 3-factor Analysis of Variance (ANOVA) with 2-way interactions allowed us to identify significant differences in all descriptors between the six types of bread, invariability of samples in replicates and optimal repeatability of judges' responses. Subsequently, mean values obtained from sensory profiles were processed together with results from chemical-physical analyses by Principal Component Analysis (PCA). Data processing allowed us to identify the most significant sensory and analytical variables as follows: six sensory attributes (i.e., adhesiveness, fermented odour, cheese odour, salty taste, fermented flavour, cheese flavour) and four instrumental variables (i.e., acidity and Hunter's colorimetric coordinates a, b, L with respect to bread crumb), thus confirming that considerable differences did exist between the different types of gluten-free bread considered.
Results from this study point to the importance of investigating thoroughly the sensory aspect, which has often been underestimated, of specific food products destined to celiac consumers. However, no research is available in the literature, where sensory aspect of gluten-free products is given the same attention as both nutritional and safety characteristics. And yet sensory information is an essential aspect, as visual, olfactory, gustatory characteristics are known to be closely related to liking and choice of food products.
Identification of the most significant sensory variables representative of gluten-free sliced bread may also help to develop new products to meet requirements of this consumer target, which is steadily increasing
Vascular Complications following Isolated Limb Perfusion for Local Recurrence of Extremity Melanoma: A Case Report and Literature Review
Full text linkIntroduction. To evaluate the role of hyperthermic isolated limb perfusion (HILP) in arterial thrombosis following melanoma-soft tissue sarcoma chemotherapy. Report. Here is presented one case of iliac-common femoral artery subacute thrombosis and a review of the appropriate literature performed using a MEDLINE search. Acute/subacute arterial occlusion is one of the most feared vascular complications of HILP, located nearly always in the external iliac-femoral artery axis, being those vessels cannulated for perfusion. Conclusions. The small number of reported cases indicates either the rarity of this complication or unawareness of its existence. The true incidence of this complication is probably underreported
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
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
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