1,720,998 research outputs found
Verso un allevamento sostenibile: l'utilizzo di bucce e pastazzo di ficodindia nell'alimentazione degli ovini da latte
No full textNon present
COVID-19 and the Dairy and Meat Supply Chain
No full textThe Coronavirus health emergency and the lockdown adopted in Italy and many countries are head-hitting in the agricultural and agri-food sector
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
The use of Brix refractometer as a simple and economic device to estimate the protein content of sheep milk
Full text linkIn this study, 737 individual sheep milk samples were collected 2 times from morning milkings to evaluate the relationships between Brix refractometer measurements and milk constituentsd protein and fat percentages to verify its ability to predict milk constituents. The Pearson's simple (rSP) and partial (rPP) correlations between milk constituents were calculated, and several first- and second-order regressions were tested to predict the protein and fat percentages. The rSP coefficients between the Brixrefractometer measurement and fat (rSP 1⁄4 0.46) and protein (rSP 1⁄4 0.87) contents were different fromthe rPP coefficients, particularly for fat percentage (rPP 1⁄4 0.04 and rPP 1⁄4 0.82, for fat and protein per-centages, respectively). The results of the forecasts can be considered satisfactory only for the first order regression that predicted the percentage of milk protein, while the regression that predicted the percentage of fat milk protein presented a weak forecasting capacity
Relationships between chemical and physical parameters of bulk milk from Valle del Belice sheep
Full text linkIn this study, we aimed to evaluate the relationships between the constituents of bulk milk of Valle del Belice sheep. During two years of investigation, 693 milk samples were collected and analysed to assess the major physicochemical parameters. Comparative analysis of partial and simple correlations revealed a strong correlation between milk constituents without the effect of third-party parameters
L’acido alfa-linolenico nei formaggi, potenziale biomarcatore dell’alimentazione con erba verde. I consumatori considerano qualitativamente migliori i prodotti lattiero caseari ottenuti da animali alimentati al pascolo, diventa quindi importante distinguerli
No full textIl consumatore consapevole avverte sempre più il bisogno di qualità orientando le proprie scelte su prodotti ed alimenti sicuri, genuini e salubri, garantiti da processi di produzione controllati, certificati e sostenibili per l’ambiente. Le attuali tendenze verso una dieta sana hanno accresciuto l’interesse dei consumatori per alimenti di origine animale
legati al territorio e prodotti nel rispetto dell’ambiente e del benessere degli animali. Se si valuta la qualità come il livello di corrispondenza tra le aspettative del consumatore ed il prodotto offerto, maggiori saranno le sovrapposizioni fra aspettative e caratteristiche del prodotto, maggiore sarà la “qualità” che il consumatore attribuisce a quel prodotto. Per quanto riguarda i prodotti lattiero-caseari, sono prevalentemente aspetti etici, ambientali e sanitari che inducono il
consumatore a considerare qualitativamente migliori quelli ottenuti dal latte di animali alimentati al pascolo.
I prodotti che nascono da un’alimentazione al pascolo godono di un valore aggiunto da un punto di vista
sia sensoriale che salutistico. È ben noto che la natura della materia prima è quella che incide maggiormente
sul livello qualitativo del prodotto trasformato. Infatti, nel caso del latte, la sua complessità aromatica e
nutrizionale cambia enormemente quando gli animali passano dall’alimentazione secca in stalla, a base di
fieno e mangime concentrato, a quella verde del pascolo caratterizzata da una molteplice diversità botanica. I
pascoli naturali sono costituiti da decine di specie botaniche diverse il cui stadio vegetativo è in continua evoluzione,
e ognuna di queste apporta un suo diverso contributo in termini di nutrienti e, soprattutto, di note aromatiche
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