1,721,794 research outputs found
<i>Lactiplantibacillus plantarum</i> 1201 Inhibits Intestinal Infection of <i>Salmonella enterica</i> subsp. <i>enterica</i> Serovar Typhimurium Strain ATCC 13311 in Mice with High-Fat Diet
No full textSalmonella Typhimurium is widely distributed in food. It can colonise the gastrointestinal tract after ingestion, causing lamina propria edema, inflammatory cell infiltration, and mucosal epithelial decomposition. A high-fat diet (HFD) can induce an inflammatory response, but whether HFD can increase the infection level of S. Typhimurium is unknown. We established a model of Salmonella enterica subsp. enterica serovar Typhimurium strain ATCC 13311 ATCC 13311 infection in healthy adult mice with a maintenance diet (MD) or HFD to explore the effect of Lactiplantibacillus plantarum 1201 intervention on S. Typhimurium ATCC 13311 colonization and its protective effects on mice. HFD exacerbated the infection of S. Typhimurium ATCC 13311, while the intervention of L. plantarum 1201 effectively mitigated this process. L. plantarum 1201 can reduce the colonies of S. ATCC 13311 in the intestines and tissues; and reduce intestinal inflammation by down-regulating the level of TLR4/NF-κB pathway related proteins in serum and the expression of related inflammatory factors in the colon and jejunum. Since L. plantarum 1201 can inhibit the colonization of S. Typhimurium ATCC 13311 and relieve inflammation in HFD, current research may support the use of L. plantarum 1201 to prevent S. Typhimurium infection
Duality in Computer Science (Dagstuhl Seminar 13311)
Get PDFDuality allows one to move between the two worlds: the world of certain algebras of properties and a spacial world of individuals, thereby leading to a change of perspective that may, and often does, lead to new insights. Dualities have given rise to active research in a number of areas of theoretical computer science.
Dagstuhl Seminar 13311 "Duality in Computer Science" was held to stimulate research in this area. This report collects the ideas that were presented and discussed during the course of the seminar
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
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
ANTIBACTERIAL ACTIVITY OF MANGOSTEEN BARK FRACTION (GARCINIA MANGOSTANA L.) SALMONELLA TYPHI ATCC 13311
Get PDFBackground: Typhoid fever is caused by Salmonella typhi bacterial infection which spreads via the faecal-oral route and has epidemic potential. Salmonella typhi is a Gram-negative bacterium in the Enterobacteriaceae family. Currently, the use of natural ingredients can be an alternative treatment for typhoid fever, one of which is the mangosteen stem skin (Garcinia mangostana L.). Purpose: To determine the antibacterial activity of mangosteen stem skin fraction against Salmonella typhi ATCC 13311. Method:The maceration method was selected using methanol solvent and fractionation by ECC using ethyl acetate and n-hexane as solvents. This study used five treatments (fraction with a concentration of 20%, 40%, 80%, chloramphenicol 30µg as a positive control, and DMSO as a negative control) which tested their antibacterial activity against Salmonella typhi ATCC 13311 by disc diffusion. Result: The results showed that the ethyl acetate fraction of mangosteen stem skin had the greatest average inhibition zone, that is 13.86 ± 0.72 mm compared to the n-hexane fraction of mangosteen stem skin with an inhibition zone of 10.43 ± 0.73 mm. The data obtained were then analyzed with One-way ANOVA. Conclusion: The results obtained were p=0.000 (sig <0.05), indicating that there was a significant difference between the ethyl acetate fraction and the n-hexane fraction with 20%, 60%, and 80% concentrations with positive contro
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