1,721,005 research outputs found
3rd International Symposium on Postharvest Pathology: Using Science to Increase Food Availability
No full textControlling microbial contamination is a critical aspect of reducing losses of harvested apple fruit during storage. The use of synthetic pesticides is still an essential tool; however, the future use of these compounds is increasingly limited due to the onset of pathogen resistance and to growing consumer demand for fruits free of pesticide residues. In this work, we evaluated two different strategies for the storage 'of 'Cripps Pink' apples. In the first one, the apples were sprayed with electrolyzed water (EW) at 400 mg L-1of free available chlorine (FAC) in the field before harvest, and were then stored at 1°C under controlled atmosphere for 4 months. At the end of the storage period, the percentage of rotted apples, especially with regard to Gloesporium spp. rotting, was evaluated and compared to the percentage of conventionally treated (pyraclostrobin+boscalid) apples. In the second storage strategy, apples were not treated with EW in the field, but moved directly to the storage facility after harvest, where they were stored for 2 months at 1°C in controlled atmosphere, and then either washed with working line water, or washed by dipping in EW at 50 mg L-1or washed by spraying with EW at 400 mg L-1FAC. After washing, the apples were stored at 25°C and checked every seven days. The bacterial contamination of washing water and the presence of pesticide residues on apples were also analyzed. The results evidenced that the percentage of rotted apples was significantly lower if the apples were treated with EW at 400 mg L-1of FAC before harvest. EW can be considered as an effective means of controlling microbial contamination and rotting. EW also can reduce the pesticide residues in 'Cripps Pink' apples
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
Lentinula edodes beta-1,3-glucans are involved in the inhibition of the aflatoxins biosynthesis.
No full textLipoperoxidative events influence ochratoxin A biosynthesis in Aspergillus ochraceus during the interaction with Triticum durum seeds
No full textDispelling 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
Biotransformation of patulin by Gluconobacter oxydans
No full textA bacterium isolated from patulin-contaminated apples was capable of degrading patulin to a less-toxic compd., ascladiol. The bacterium was identified as Gluconobacter oxydans by 16S rRNA gene sequencing, whereas ascladiol was identified by liq. chromatog.-tandem mass spectrometry and proton and carbon NMR. Degrdn. of up to 96% of patulin was obsd. in apple juices contg. up to 800 .mu.g/mL of patulin and incubated with G. oxydans
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