1,721,010 research outputs found
PROGETTO CARGI costituzione di ibridi di girasole ad alto contenuto in acido oleico, a basso input, adattati alle condizioni ambientali del friuli venezia giulia per usi energetici e nella chimica verde
No full textIl girasole. Caratteristiche morfologiche, tecniche colturali e utilizzo di nuovi ibridi
No full textIl volume propone, in forma articolata ed organica, i risultati di sperimentazioni e ricerche sulla coltura del girasole effettuate presso l'azienda agraria dell'Università di Udine e descrive l'intensa attività di miglioramento genetico che ha consentito lo sviluppo di nuove varietà e di nuovi ibridi, alcuni dei quali attualmente in commercio. Il testo, presentandosi come uno strumento di consultazione e di studio, fornisce una visione d'insieme su questa pianta unendo idealmente tra loro i vari aspetti che la caratterizzano - biologici, fisiologici, genetici ed agronomici - e focalizza soprattutto l'attenzione sul girasole alto oleico e sulle caratteristiche genetiche e fisiologiche che lo distinguono dai genotipi tradizionali; largo spazio viene dato alla tecnica colturale considerando sia gli aspetti produttivi sia la tutela dell.ambiente connessa alle pratiche agronomiche. Sono riportati, infine, i possibili impieghi industriali degli oli vegetali derivati sia dal girasole che da altre oleaginose come il ricino e la soia, per illustrare le enormi possibilità offerte nei diversi settori tecnologici che interessano il quotidiano
Come produrre olio vegetale e quanto costa
No full textNell’ambito del progetto “Sostenibilità economico-aziendale della produzione di biocombustibili da biomasse a filiera corta”, finanziato dalla Regione Friuli Venezia Giulia, è stata attuata una sperimentazione volta alla produzione di energia direttamente da biomassa proveniente da attività agricola presso l’Azienda Agraria “A. Servadei” dell’Università degli Studi di Udine.
In particolare, l’obiettivo è stato quello di produrre energia elettrica e termica, predisponendo una filiera corta a livello aziendale in modo da ottenere, almeno in parte, la produzione dell’olio vegetale necessario per l’alimentazione di un motore cogenerativo, partendo dalla produzione del seme, dal suo processamento, fino all’utilizzo diretto come biocombustibil
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
Downy Mildew (Plasmopara Halstedii) Infection in High Oleic Sunflower Hybrids in Northern Italy
No full textThis study was conducted to evaluate the behavior of some high oleic sunflower
hybrids towards the race of Plasmopara halstedii present in the environment
and to analyze the main climatic factors affecting development and
spread of the disease in order to draw up the basis for a prediction model of
disease incidence. The race was determined by means of artificial infection of
differential inbred lines in a growth chamber experiment and a field trial was
also done to study the effects of the factors genotype, sowing time and seed
dressing on the infection percentage of P. halstedii during different sunflower
growing stages. The Pl genes responsible for resistance to race 700, detected in
the trial area and named according to the international code, were absent in all
the high oleic hybrids studied, which, however, manifested a partial resistance
to downy mildew, probably due to the partial polygenic, non-qualitative and
non-specific resistance to the race detected. Seed treatment with metalaxyl
helped to limit the severity of P. halstedii attack to 5% of plants infected, but
with a maximum of 19.6% in the susceptible check. Concerning the environmental
conditions, water availability did not result as being limiting for the
infection, whereas the most favorable mean air temperatures during the 5 days
following sowing ranged from 10 to 15°C
Effetto Dell’epoca Di Semina E Dell’anno Sugli Acidi Grassi Insaturi. In Linee Inbred Di Girasole Alto Oleico E Nel Loro Ibrido
No full textRisposta di diversi genotipi di girasole alla demasculazione chimica con acido gibberellico
No full textEffetto di tre dosi di acido gibberellico in tre genotipi di girasole sulla fertilità. Valutazione della demasculazione chimica per le attività di breedin
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