1,720,990 research outputs found
Effect of high pressure processing (HPP) on the stabilization of plant-based beverages
No full textThe global market of plant-based dairy alternatives is growing rapidly. In addition, there is an increasing demand for minimally processed, fresh-like products, with high sensory, nutritional, and health-promoting value. In this context, our study aimed at investigating the potential of High Pressure Processing (HPP) for the stabilization of three vegetable beverages, based on oat, almond and cashew nuts. Unlike beverages based on fruits and vegetables, those obtained from seeds have a pH close to neutrality, which may limit the effectiveness of HPP and the stability of treated products. Three formulations of seed-based drinks, for oat, almond and cashew, respectively, were divided into two batches: one was bottled into 250 mL PET bottles with HDPE caps, which were subjected to a HPP cycle at 600 MPa for 3 min; the other was thermally pasteurized at 82 °C for 30 s and hot-filled into 250 mL glass vases. The stability of HPP-treated and heat-pasteurized samples was monitored through microbiological, sensory, and chemical (antioxidant activity, oxidation degree) parameters, and the shelf life was determined based on microbiological and sensory acceptability limits. Results showed that the HPP process was effective at significantly reducing the initial microbial load of the beverages, at a comparable level with thermal pasteurization. The antioxidant capacity of the beverages, even if different based on the nature of the raw material, maintained stable during 21 days of storage at refrigerated conditions. Microbial counts increased progressively but did not exceed the acceptability limit until at least 21 days. Hence, our comparative shelf life study suggests that, similarly to heat-pasteurized oat, almond and cashew-based drinks, HPP-treated drinks may be assigned a shelf life of 21 days at refrigerated conditions
Decontamination Efficacy of Neutral and Acidic Electrolyzed Water in Fresh-Cut Salad Washing
No full textThe possibility of washing fresh-cut vegetables with neutral (NEW) and acidic (AEW) electrolyzed water instead of highly chlorinated solution was investigated. The decontamination efficacy was tested in vitro against Pseudomonas fluorescens, which is a typical inhabitant of leafy vegetables. The antibacterial efficacy of NEW and AEW was highly dependent on pH solution. NEW and AEW that were adjusted to a pH analogous to that of salad (6.5) completely inactivate P.fluorescens at 30mg/L free chlorine concentration. The same result was achieved by sodium hypochlorite aqueous solution at a much higher free chlorine concentration (150mg/L). NEW and AEW at 30mg/L free chlorine concentration also reduced total mesophilic count, Pseudomonas spp. and total coliforms of salad by circa 1 log cycle. Microbial loads of wastewater deriving from salad washing resulted below the detection limit. © 2015 Wiley Periodicals, Inc
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
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
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
