1,720,960 research outputs found
Organic management and productions of quality: influence of growing management on nutraceutical compounds and mineral profile in artichoke cv “Spinoso Sardo”
Get PDFRecent years have seen a considerable growth of organic food marker. This phenomena is caused by great awareness of consumers about food safety and health.However, several studies have shown different results on organic management, especially as regard the nutritional component (phytochemicals and minerals). The globe artichoke, rich of minerals and polyphenols, has been analysed for the high nutritional value. A large number of research showed that there were considerable variation on minerals and polyphenols according to different management, environmental and biological factors.The overall objective of this study was to investigate the effects of different crop management on polyphenols profile and mineral component in globe artichoke.The experiment was carried out in an experimental field for ten years under organic management, to evaluate the applicability of this management in the mid-long term in this crop.In the Chapter 1 the variation of concentration of major polyphenols has been investigated in relation to different managements, during two growing seasons. In the second one the clones of “Spinoso sardo” were introduced to evaluate the genotype influence.In the Chapter 2 reports the results obtained to quantification of mineral content during two growing seasons to evaluate the effects of different management and environmental condition to uptake of macro e micro minerals. In the second years of trials has been investigated the effect of genotype
Phytotoxic metabolites produced by fungi involvedin cork oak decline
Get PDFDiplodia corticola, anamorph ofBotryosphaeria corticolaPhillips, AlvesetLuque, andBiscognauxia mediterranea(De Not.) O. Kuntze (= Hypoxylon mediterraneum) have often been
associated with serious decline phenomena, which have been affecting the cork oak forest in Italy
and other Mediterranean countries for several years.Diplodia corticolais widespread in Sardinian
oak forests, and can affect plants of different ages, inducing symptoms which include dieback,
cankers and vascular necrosis. These studies may provide information which could be useful for understanding the chemistry
and the biology governing the relationship between these fungi and their hosts. Further studies
should aim to also evaluate the ecological role of these substances
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
Dispelling 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
Effects of alternative cropping systems on globe artichoke qualitative traits
No full textBACKGROUND: Traditionally, globe artichoke cultivation in the Mediterranean basin is based on monoculture and on use of high amounts of nitrogen fertiliser. This raises issues regarding its compatibility with sustainable agriculture. We studied the effect of one typical conventional (CONV) and two alternative cropping systems [globe artichoke in sequence with French bean (NCV1), or in biannual rotation (NCV2) with cauliflower and with a leguminous cover crop in inter-row spaces] on yield, polyphenol and mineral content of globe artichoke heads over two consecutive growing seasons. RESULTS: NCV2 showed statistical differences in terms of fresh product yield with respect to the monoculture systems. In addition, the dihydroxycinnamic acids and dicaffeoylquinic acids of non-conventional samples were one-fold significantly higher than the conventional one. All the samples reported good mineral content, although NCV2 achieved a higher Fe content than conventional throughout the two seasons. After two and three dates of sampling, the CONV samples showed the highest levels of K content. CONCLUSION: In our study, an acceptable commercial yield and quality of âSpinoso sardoâ were achieved by shifting the common conventional agronomic management to more sustainable ones, by means of an accurate choice of cover crop species and rotations introduced in the systems. © 2017 Society of Chemical Industry
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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