1,721,074 research outputs found
Fatty acids by high-performance liquid chromatography and evaporative light-scattering detector
No full textAhigh-performance liquid chromatographic (HPLC) separation method with an evaporative light-scattering detector (ELSD) has been developed
for the separation and quantitative analysis of fatty acid methyl esters (FAME) in three different oils. Reverse-phased C18 HPLC separation of
13 FAME is achieved using a methanol/water eluent mixture. The retention times (RT) reflect the elution behavior of these compounds on C18
reversed-phase HPLC. The proposed method is tested on: soybean oil (Glycine max L.) as reference sample, rice bran oil (Oryza sativa L.), pumpkin
seed oil (Cucurbita pepo L.) and algal oil (Arthrospira platensis Nordst.)
Un modello “integrato” di intervento psicologico in Pronto Soccorso-Triage: due anni di esperienza di formazione degli operatori sanitari a Verona
No full textIl capitolo presenta un'esperienza di formazione di due anni rivolta agli operatori sanitari del Pronto soccorso-Triage dell'Ospedale Civile Maggiore di Borgo Trento (Verona). Propone inoltre delle riflessioni su un modello "integrato" di intervento psicologico in area critica
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
Accelerated shelf-life model of gluten-free rusks by using oxidation indices
No full textThe demand for gluten-free products has been growing over the last few years as is the need to improve their quality. The objective of this research was to develop a shelf life prediction model of gluten-free rusks. To this aim, a kinetic study of the primary and secondary oxidative process was run and the kinetic parameters (rate constant, activation energy, and temperature quotient) were calculated. The protective effect of the antioxidant included in the recipe was also evaluated, and the prediction model was applied to predict the shelf life of an experimental batch of gluten-free rusks with a lower content of antioxidant. The results highlighted (i) the reliability of the prediction model and (ii) the effectiveness of the antioxidant in reducing the rate of primary oxidation. Moreover, (iii) a possible hexanal threshold (lower than 121 μg/kg), correlated with rancid perception in gluten-free rusks, was also speculated
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
Preparative supercritical fluid extraction for quality control in beer industry
No full textBarley is the main raw material for beer production but must first be converted into malt before its use in brewing. Unmalted cereals, such as corn, rice, wheat, and sorghum, are often used as adjuncts in some countries. Corn products are traditionally used as an adjunct in the USA and Europe because it provides extract at a lower cost (a more cost effective form of carbohydrate) than is available from malted barley. Corn adjuncts are readily available, and provide other positive effects such as color adjustment, fuller flavor, etc. The addition of corn products as a raw material in an all-malt beer recipe is considered a beer adulteration. The aim of this research was the evaluation of the fatty acids pattern as a method for ascertaining the presence of corn grits as an adjunct in beer, and to determine if its presence is checkable in labeled all-malt beers. A correlation between the different pattern of fatty acids in beer with and without corn grits could be an index to evaluate the presence of solid corn adjunct in beer. Lipid content and fatty acids profile were evaluated in malt and corn, in stated all-malt beer and in stated beer with added corn grits. The results obtained in this preliminary study show a potential correlation between fatty acids of beer lipids and different raw materials in the recipe
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