1,720,984 research outputs found
Exploitation of the wine and fruits production in Valtellina with innovative methods (INNOVI’)
No full textThe project is mostly addressed to the production of apple, grape and blueberry, which represent the leading production areas in Valtellina. The target of this project is the determination and realization of innovative optical devices useful to rapidly determine in a non destructive way the ripening phas
Scegliere la varietà di melo con le Liste 2011
No full textSono due le nuove entrate: Annaglo*, varietà estiva, e Coop 39* Crimson Crisp® , resistente alla ticchiolatura. Quest’anno escono dalla Lista Jonagored* Morren’s®, Rofm811 Rubinfuji® e Fiero* September Wonder
Quality and Nutraceutical Content of Blueberries (Vaccinium corymbosum) Grown at Two Different Altitudes (450 and 650 m a.s.l.)
No full textThe production of blueberry in Italy has been growing in recent decades, in
response to consumer interest in fruit rich in bioactive compounds with potential
dietary anticarcinogens. The study analyzed ripening indices and antioxidant
compounds of two blueberry cultivars (‘Brigitta Blue’ and ‘Duke’) grown in
Valtellina, Northern Italy during the 2005 and 2006 growing seasons at two different
altitudes (450 and 650 m ASL). Fruits were sampled weekly in four classes from
mature green to fully ripe berries. Color, total soluble solids, firmness, total
phenolics, total anthocyanins, and ascorbic acid were evaluated in blueberries of
each ripening class. Greater altitude delayed ripening, color development, and fruit
size of ‘Duke’, and enhanced the ascorbic acid content during the ripening process,
without influencing other parameters. ‘Brigitta Blue’ attained a higher (about 20%)
sugar content and fruit size, while ‘Duke’ showed 50% more total anthocyanins and
ascorbic acid, and 25-30% more total phenolics. These traits could be attributed to
cultivar and to the earlier ripening of ‘Duke.
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
Sviluppo di un metodo in elettroforesi capillare per la determinazione del lattulosio e del mannitolo nelle urine e sue applicazioni allo studio della permeabilità intestinale in diabetici di tipo 1
No full textDevelopment of a capillary electrophoresis method for urinary lactulose and mannitol determination to assess the intestinal permeability in patients with type 1 diabetes. The assessment of the unbalanced intestinal permeability to lactulose (LAC) and mannitol (MAN) after oral administration is used for the diagnosis of gluten-sensitive
enteropathy. Aim of this study was to set up a method by capillary electrophoresis to detect the concentration
of MAN and LAC in urine to estimate the intestinal permeability in controls and in patients affected by type I diabetes
mellitus. In <10 min the underivatized carbohydrates were separated at pH of 12.5 and with indirect UV detection at
254 nm. In controls (n=41) 11.3 (median; interquartile range: 5.7-15.3) and 303 (237-440) mg of LAC and MAN were
excreted during the 5 h urine collection after the carbohydrate administration, while in diabetes patients (n=24) 16.5
(12.8-24.3) and 229 (170-354) mg of LAC and MAN were found. This simple and rapid technique is suitable to study
intestinal permeability alterations in different cohorts of patient
Lactulose and mannitol intestinal permeability detected by capillary electrophoresis
No full textAim of this study was to set up a method by capillary electrophoresis to detect lactulose and mannitol in urine after an oral load, and to estimate the intestinal permeability in controls and in type I diabetes patients. The underivatized carbohydrates were monitored by indirect UV detection using sorbate, cetyltrimethylammonium bromide and LiOH as background electrolyte. Urines were purified by solid phase extraction, shaken with cation exchange resin, filtered and analysed. Carbohydrates migrated in <10 min in relation to their pKa and Mr. Controls (n = 33) and patients (n = 23) had an excretion ratio lactulose/mannitol 0.025 (0.018–0.051) and 0.067 (0.050–0.127), respectively (p < 0.01, median, interquartile range)
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
Prediction of blueberry (Vaccinium corymbosum) ripeness by a portable Vis-NIR device
No full textNowadays the consumer’s knowledge on fruit quality is becoming greater for the increasing interest in every food aspects related to health care and better quality of life. For these reasons the modern concept of quality combines ripening parameters and nutritional contents. Many of these characteristics are based on preharvest factors and their right assessment is related to the correct harvest moment. Traditionally, blueberries quality evaluation is achieved by a visual tasting assessment of the fruits and evaluation of some indexes like soluble solids content (SSC) and acidity. These parameters are not sufficient as quality indicators and nutraceutical indexes need to be investigated. The conventional methods for the determination of these quality parameters are time consuming, require preparation of samples and are expensive. Visible-Near Infrared Spectroscopy (Vis-NIR) is a rapid and non-destructive technique, requiring minimal sample processing before analysis, and coupled with chemometric methods appears to be one of the most convenient and straightforward analytical tools to study fruit quality and ripeness. With this aim, an optical, portable, experimental device (Vis-NIR spectrophotometer) for non-destructive and quick prediction of ripening indexes (soluble solids content, titrable acidity and firmness) and nutraceutical properties (total anthocyanins, total polyphenols and ascorbic acid) of fresh berries and homogenized samples of blueberries (Brigitta and Duke varieties) in the wavelength range 450-980 nm was built and tested. Good prediction statistical parameters were obtained for all the parameters with correlation coefficients values (r) between 0.8 and 0.92 for the regression models built for fresh berries. Similar results were obtained for the regression models elaborated for homogenized samples with r > 0.8 for all the indexes. Results show that Vis-NIR spectroscopy is an interesting and rapid tool for assessing blueberries ripeness
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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