1,720,965 research outputs found
A novel polygalacturonase-inhibiting protein (PGIP) from Lathyrus sativus L. seeds
No full textPolygalacturonase-inhibiting proteins (PGIPs) are extracellular plant proteins bound to the plant cell wall containing leucine-rich repeats (LRR). They play an important role in plant defence being able to inhibit fungal endopolygalacturonases (EPGs), the first enzymes secreted by phytopathogenic fungi during plant infection. In the present work, a novel PGIP (LsPGIP) has been isolated from Lathyrus sativus seeds. LsPGIP exhibited an inhibitory activity towards EPGs from Aspergillus niger and Rhizopus spp. A pI value of 8.3 and a molecular mass of 40 kDa were determined for the purified inhibitor. Furthermore, N-terminal sequence up to residue 20 revealed that LsPGIP exhibit a high percentage of identity with PGIP from Actinidia deliciosa. A secondary structure similar to those of other polygalacturonase inhibitors was also inferred form circular dichroism data. © 2012 Bentham Science Publishers
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
Nutritional values and radical scavenging capacities of grass pea (Lathyrus sativus L.) seeds in Valle Agricola district, Italy
No full textLathyrus sativus L., commonly known as grass pea, is an annual plant widely grown as a pulse crop and its dried seeds are harvested and consumed as a human food since ancient times. This plant is also commonly grown for animal feed and as forage. In the Mediterranean marginal areas, several grass pea germplasm of Lathyrus sativus L. are present and, among them the edible seeds of plants grown in Valle Agricola, a little town near Caserta (Italy), are well known for the local cuisine. Since there are no nutritional data available on the Lathyrus sativus grown in Valle Agricola, we have investigated nutritional values and metabolic profile of these seeds. Our results show that these seeds contain high levels of proteins (25.6±0.20 g/100 g) and essential amino acids (7.92 g/100 g). Different unsaturated fatty acids contribute to the total lipids amount (1.67±0.18 g/100 g); among them, the essential PUFA -linolenic, linoleic and -linolenic acids are the most abundant. Ascorbic acid (13.50±0.30 mg/100 g) and glutathione (15.90±0.10 mg/100 g) are also present and, the folic acid content (206.70±8.30 g/100 g) represents 50% of the vitamin RDA (Recommended Dietary Allowance). Total phenolic content (174.91±8.39/100 g), as well as the radical scavenging activity vs. DPPH radical and ABTS radical cation, have been estimated. The content of neurotoxin -ODAP (16.2±0.5 g/Kg), commonly present in seeds of all examined grass pea genotypes and responsible of lathyrism paralysing disease, is quite high
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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