1,720,956 research outputs found
Correlation between neurotrasmitter levels and anxietyrelated behaviours in cats
Full text linkIntroduction:
The present study aims to evaluate the existing correlations between neurotransmitter levels and
anxiety-related aggressive behaviour.
Materials and methods:
22 adult cats (age > 6months; no pharmacological therapy for behaviour problems) were grouped
according to three different levels of aggressive behaviour: Group 1 (N=11): rare aggressive
attacks, anxiety and aggressive-related behaviour problems reported by the owner; Group 2 (N=4):
frequent aggressive attacks (n attacks > 12/year); Group 3 (N=7): control, no aggressive attacks
reported by the owners. An accurate questionnaire focusing on anxiety and aggressive behaviour
was filled in for every subject and evaluated by a DVM certified Specialist in Veterinary
Behavioural Medicine. Blood samples were collected in EDTA for all the subjects for
neurotransmitters analysis (standard blood processing procedures for HPLC neurotransmitter
analysis were applied). HPLC analysis was carried out for the following neurotransmitters:
Dopamine precursor LDOPA, dopamine DA, noradrenalin NA, adrenalin A, serotonin SE levels in
plasma and platelets; 5-hidrossiindolacetic acid HIAA (serotonin metabolite) and Homovanillic acid
(dopamine metabolite) in platelets. SAS ® statistic package was applied to data analysis: FREQ,
MEAN and NPAR1WAY procedures were applied; the analysis of variance was carried out using a
Kruscal-Wallis one-way ANOVA.Results:
The results indicate that during the history taking session, the origin of the cat, age at weaning and
human family structure are very helpful in aggressive behaviour evaluation, furthermore
nervousness, shyness and fearfulness related information are closely linked to anxiety related
problems. Higher levels of NA (pg/ml), DA (pg/ml), LDOPA plasma (pg/ml), LDOPA platelet
(pg/ml) were found in Control group (P≤0.05). A correlation between neurotransmitter
concentrations and anxiety related behavioural problems has been calculated.
Discussion:
The obtained results suggest, in particular, that the reduction in platelet DA levels could be related
to aggressive behaviour towards animals and human beings. Further analysis is needed to improve
the knowledge of the complex relations between nervous system and behaviour. In addition the
investigation of the genetic basis of behaviour could supply powerful tools in the understanding of
anxiety and aggressiveness in companion animals
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
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
Cutaneous blastomycosis in a horse
No full textThis report describes the case of a horse presented with cutaneous lesions caused by Blastomyces dermatitidis in the absence of signs of other organ involvement. Diagnosis was achieved through cytology, histopathology and culture. Surgical debulking associated with systemic therapy with oral fluconazole resulted in significant remission; however, recurrence occurred following presumed early cessation of treatment
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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