1,720,963 research outputs found
AFLP-based bulk segregant analysis for tagging the slow-ripening trait in peach [Prunus persica (L.) Batsch]
No full textFlesh texture is an important quality trait in peach, affecting both fruit firmness and the ripening process. An interesting variation, “slow ripening” (SR), described in some progeny from ‘Fantasia’ nectarine, interferes with the
completion of ripening. In these plants, fruit development appears to cease before the end of the cell expansion phase. The SR process was studied at the genetic level using amplified fragment length polymorphisms (AFLPs) combined
with bulked segregant analysis (BSA).A marker linked to the SR trait was found at 5.6 cM in a segregating ‘BO 95021’ selfed progeny related to the cultivars ‘Fantasia’ and ‘Fairlane’.The original F1 parent tree was not available at the time of this trial which prevented traditional gene mapping and required the use of BSA. The F1 plant was derived by crossing ‘Fantasia’, a normal melting-flesh (M) nectarine, and ‘BO 7803302’, an SR selection generated by open pollination of ‘Fairlane’, another M-flesh nectarine, putatively heterozygous for the SR trait. The generally high level of inbreeding in peach could explain the low level of genetic variability observed in our AFLP patterns
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
Amniotic fluid β2-microglobulin (β2-m) as an index of fetal maturity
No full textAmniotic fluid β2 microglobulin (β2-m) levels were measured by radioimmunoassay in 78 pregnant women between the 14th and the 42nd week of gestation. 62 were healthy subjects, while eight were affected by EPH gestosis, seven by diabetes (cl. B-F) associated with Rh immunization in one case, one by hydramnios. There was no significant correlations either between β2-m and creatinine (n=18), or between β2-m and lecithin sphyngomyelin ratio (L/S) (n=16), although low concentrations of β2-m were usually observed after the 35th week of gestation. It is noteworthy that only in one case out of seven with amniotic levels <5μg/ml the L/S ratio was <2
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
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
Fistola artero-venosa renale iatrogenain sindrome di Wegener: embolizzazione percutanea
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