1,720,961 research outputs found
COMPARATIVE EVALUATION OF THE SEDATIVE EFFECTS OF BUTORPHANOL AND METHADONE IN COMBINATION WITH DEXMEDETOMIDINE AND ACEPROMAZINE IN DOGS
No full textComparison of the analgesic effects of meloxicam and robenacoxib in dogs after laparoscopic surgery
No full textPreliminary evaluation of aqueous tear production in dogs after sedation with intramuscular dexmedetomidine-butorphanol combination
No full textObjective. The aims of the study are to evaluate the effect of dexmedetomidine-butorphanol combination on aqueous tear production assessed with Schirmer tear test I (STT I) in dogs and to evaluate the influence of gender, weight, duration of sedation and right or left eye on STT I values after the sedation.
Materials and Methods. One hundred forty-one client-owned dogs undergoing clinic visit, radiologic or ultrasonographic assessments, aged > 12 months, without previous ocular disease and with no drug therapy or sedation or anesthesia in the previous three months are included. Ocular examination consists of STT I and an exam with a slit lamp executed before sedation. The same experienced veterinarian performed ocular examination. Dogs with STT I lower than 15 mm/min or higher than 25 mm/min or with abnormalities of the ocular surface were withdrawn from the study. The dogs were sedated with dexmedetomidine 5 μg/kg combined with butorphanol 0.2 mg/kg inoculated intramuscularly (IM). Dexmedetomidine was completely reversed by administering atipamezole IM. The STT I was detected for each dog before sedation, at 15 minutes after the administration of the dexmedetomidine-butorphanol combination and at 15 minutes after the injection of atipamezole at the end of procedure. The data were analysed using ANOVA by means of the general linear model (GLM). STT I values were reported as least-squares means (LSMeans) ± standard error (SE). Age, weight and duration of sedation were expressed as mean ± standard deviation (SD). P values < 0.05 were considered significant.
Results. Forty-three dogs are withdrawn from the study because of ocular surface abnormalities or STT I 25 mm/min. The 98 dogs included in the study (16 entire females, 31 spayed females, 28 entire males and 23 neutered males) belonged to thirty-three breeds, had a mean age of 5.2 ± 2.8 years with a range of 1-11 years and a mean weight of 18.21 ± 9.66 kg with a range of 6-66 kg. STT I before sedation was 21.53 ± 0.24. Mean duration of sedation was 52.57 ± 11.41 minutes with a range of 30-87 minutes. All dogs recovered the walking ability at 15 minutes after the administration of atipamezole. STT I significantly decreased at 15 minutes after sedation (10.03 ± 0.24). At 15 minutes after injection of atipamezole, STT I was significantly higher (14.05 ± 0.24) compared to STT I at 15 minutes after sedation, but it was significantly lower compared to values before sedation. No differences related to breed, sex, right or left eye and body weight are recorded.
Conclusions and clinical significance. Dexmedetomidine-butorphanol combination significantly reduces aqueous tear production in dogs. The administration of atipamezole increases tear production, but STT I values stay below 15 mm/min even if dogs are able to walk. Therefore, the use of tear substitutes are recommended just before the sedation and in the hours following the recovery
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
- …
