1,720,993 research outputs found
Sincronizzazione dell’estro nella cavalla mediante l’uso di un analogo sintetico della Prostaglandina F2alfa, GnRH e HCG
No full textConcentrations of oestrone sulphate, androgens and LH in the peripheral plasma of mating stallions.
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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
Immunotransfer in the foal
No full textSUMMARY The study has been carried out on 10 crossbred mares belonging to the same breeding with the purpose of evaluating their seric and colostral immunoglobulins content and the relationships with the passive transfer received by their foals. Serum samples were collected at regular periods during the last month of pregnancy until delivery to assess the immunoglobulins and total proteins levels. IgG’s serum concentration was about 2500 mg/dl at 30 days before delivery, about 2300 mg/dl one week before and 2020 at delivery, with a significative trend to decrease near foaling. Total proteins mean level was 6.01 g/dl, with a good correlation with IgG concentration. Mares serum and mares colostrum IgG were not significantly correlated. Colostral IgG level at foaling was more than 8000 mg/dl, nearly 6500 mg/dl 3 hours after and about 1300 mg/dl at six hours (15% of concentration at delivery). IgG(T) were strictly correlated with IgG and highest values were observed at foaling (about 1700 mg/dl). IgM and IgA contents were also highest at the same period (respectively 86 mg/dl and 623 mg/dl). A significative correlation was observed between IgG and IgM. Serum IgG mean values of 9 foals were nearly 200 mg/dl in the samples collected within three hours from the first suckling until to reach more than 2100 mg/dl at 18 hours. IgG(T) were significantly correlated with IgG and showed highest values at 18 hours. IgM and IgA contents also showed highest values between 12 and 18 hours. Significative correlation was found between foal serum IgG contents at 6 and 18 hours and colostrum IgG levels at delivery. Foal serum α1-globulins level significantly increased between 3 and 48 hours from birth; the same was noted for γ-globulins between 3 and 24 hours. Albumin/Globulins ratio decreased, during the first 24 hours, from 2.5/1 at birth until about 1/1 at 18-24 hours. RIASSUNTO La ricerca è stata condotta su 10 fattrici meticce appartenenti allo stesso allevamento al fine di valutarne i contenuti immunoglobulinici sierici e colostrali e le relative connessioni con il trasferimento dell’immunità passiva al puledro. A tale scopo sono stati raccolti ad intervalli regolari campioni ematici durante l’ultimo mese di gravidanza fino al parto. La concentrazione sierica delle IgG è diminuita significativamente da circa 2500 mg/dl, 30 giorni prima del parto, a 2300 mg/dl circa la settimana antecedente ed a 2020 mg/dl al parto. I valori relativi alle proteine totali sono risultati correlati significativamente con i livelli di IgG. I valori delle IgG del siero delle madri e quelle colostrali non sono risultati correlati. Il contenuto colostrale di IgG è stato pari ad oltre 8000 mg/dl nei campioni presuckle ed è sceso a circa 6500 mg/dl dopo 3 ore ed a 1300 mg/dl circa nelle campionature della sesta ora, con una riduzione di circa l’85%. Le IgG(T) hanno evidenziato una stretta correlazione con le IgG, mostrando, anch’esse, i valori più alti nelle campionature operate al momento del parto (1700 mg/dl circa). Anche per le IgM e le IgA, allo stesso tempo di prelievo, si sono evidenziate le aliquote maggiori (86 mg/dl e 623 mg/dl, rispettivamente). Una correlazione significativa è stata osservata anche tra IgG ed IgM. I livelli sierici di IgG in 9 puledri indagati sono aumentati da circa 200 mg/dl, nei campioni raccolti entro le prime 3 ore dalla prima poppata, ad oltre 2100 mg/dl in quelli raccolti alla diciottesima ora. Anche in questo caso vi è stata correlazione significativa tra IgG(T) ed IgG. I valori più alti, per tutte le sottoclassi, sono stati raggiunti tra la dodicesima e la diciottesima ora. Una importante e significativa correlazione è stata individuata tra i contenuti sierici di IgG dei puledri a 6 ore e 18 ore ed i relativi livelli riscontrati nei campioni colostrali raccolti al parto. La quantità di α-1 globuline è aumentata significativamente nel siero dei puledri dalle 3 alle 48 ore dalla nascita ed altrettanto si è verificato per le γ-globuline nel periodo 3-24 ore. Il rapporto albumina/ globuline è diminuito, durante il primo giorno di vita dei puledri, passando da valori iniziali di oltre 2,5/1 a circa 1/1 nelle campionature raccolte a 18 e 24 ore
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
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