186,918 research outputs found
[Mirando al toro] : [Villalta]
No full textCorrida celebrada en la Plaza de Toros de Cartagena. 22 de abril de 1923Alcance y contenido: Instantánea de un torero, probablemente el diestro Nicanor Villalta, en primer plano, de espaldas a la cámara, de pie, mirando al toro que se encuentra parado en el límite entre sol y sombra del albero, ajeno a la presencia del diestro, puede que mirando a otro torero ante él y que no aparece retratado en la fotografía. Colgando de la contrabarrera se ve, semiocultado por la cabeza del maestro, un cartel de la Peña Murciana Gavira, lo que nos hace pensar en la toma de alternativa del diestro Enrique Cano "Gavira", producida en 1923 de manos de Villalta en el coso cartageneroTítulo tomado de la documentación aportada por el librero y del contexto de la fotografíaMención de responsabilidad tomada por los datos aportados por especialistas taurinos y documentación consultadaFecha tomada de los datos publicados en: Los toros de Cossío. T.II, p. 34
Protective effect of zinc-hydroxyapatite toothpastes on enamel erosion: an in vitro study
No full textThe aim of the present study was to test the impact of different toothpastes with Zinc-Hydroxyapatite (Zn-HAP) on preventing and repairing enamel erosion compared to toothpastes with and without fluoride.
The following four toothpastes were tested: two toothpastes with Zn-HAP, one toothpaste with fluoride and one toothpaste without fluoride. An additional control group was used in which enamel specimens were not treated with toothpaste. Repeated erosive challenges were provided by immersing bovine enamel specimens (10 per group) in a soft drink for 2 min (6mL, room temperature) at 0, 8, 24 and 32 h. After each erosive challenge, the toothpastes were applied neat onto the surface of specimens for 3 min without brushing and removed with distilled water. Between treatments the specimens were kept in artificial saliva. Enamel hardness, after the erosive challenge and toothpaste treatment was monitored using surface micro-hardness measurements.
As expected, repeated erosive challenge by a soft drink for total of 8 min significantly reduced enamel surface hardness (ANOVA, p < 0.05). No re-hardening of the surface softened enamel was observed in the group treated with fluoride-free toothpaste. Surface hardness of the softened enamel increased when the specimens were treated with the fluoride toothpaste and the two toothpastes with Zn-HAP (p < 0.05).
Toothpaste with Zn-HAP resulted in significant enamel remineralisation of erosively challenged enamel, indicating that these toothpastes could provide enamel health benefits relevant to enamel erosion
Quantitative and qualitative AgNORs rates of prostate cancer on needle core biopsies: a multicentric study.
No full textFrom 1992 to 1993, the Scarpa Foundation Center of Pavia (SFCP) with 12 associated Italian Urological Units selected 40 cases of prostate diseases discovered on needle core biopsies, 5 of which were benign hyperplasias (BPH) in patients without clinical and morphological evidence of cancer and 35 prostate cancers (PRC) classified according to Gleason's histological grades (GLG) of PRC malignancy. Serum prostatic specific antigen (PSA) values were tested before clinical urological examination or biopsy or surgery. In all groups, AgNORs scores/nucleus were obtained by semi- and -automatic computerized image analysis and also by qualitative subjective counts of three observers on light microscopy. Our results pointed out a good correlation between PSA levels, GLG of PRC malignancy and AgNORs scores. The quantitative method showed an average number of AgNORS dots per nucleus between 2 and 3 in well differentiated PRC and higher than 3 in moderately differentiated and undifferentiated PRC, and exhibited more sensitivity over GLG3 than the qualitative investigation. The qualitative subjective count of AgNORs dots/nucleus seemed to be more reliable in differentiating the AgNORs scores of BPH (average of 1.81 dots/nucleus) from very well differentiated PRC with GLG1 + 2(average of 2.25 dots/nucleus) than quantitative analysis, which showed the same average value in both groups (2.11 dots/nucleus). For these reasons, also on needle biopsies of benign and malignant prostate diseases the subjective AgNORs count may aid the histological diagnostic judgement of malignancy, by avoiding misleading diagnoses of microscopic pictures of BPH cancer look likes and a predictive histologic malignant factor, in identifying PRC with low or high progression
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
No full textWe 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
Dr. Edward P. Wimberly, ITC, July 2011
No full textThis video is a conversation with Dr. Edward P. Wimberly. Dr. Wimberly talks about his book, "No Shame in Wesley's Gospel: A Twenty-First Century Pastoral Gospel". Brad Ost, AUC Woodruff Library, is the interviewer
Author Rights and Scholarly Publishing
No full textOriginally posted at
http://blog.library.gsu.edu/2014/10/24/author-rights-and-scholarly-publishing/</p
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