1,725,471 research outputs found
Union Pacific (UP) 2851
No full textA photograph print showing Union Pacific (UP) 2851, 4-6-2, on passenger train, mail sacks being loaded
K.2851+
No full textK.2851 + K.6299 + K.14196 + K.16975 + K.17240 + K.17779
Photographs by the Shumma alu team (FNS projects nos. 175970 and 205122
2851. Guillaume d'Ercuis
No full text2851. Guillaume d'Ercuis. In: Molinier Auguste. Les Sources de l'histoire de France - Des origines aux guerres d'Italie (1494). III. Les Capétiens, 1180-1328. Paris : A. Picard et fils, 1903. p. 192
2851. Guillaume d'Ercuis
No full text2851. Guillaume d'Ercuis. In: Molinier Auguste. Les Sources de l'histoire de France - Des origines aux guerres d'Italie (1494). III. Les Capétiens, 1180-1328. Paris : A. Picard et fils, 1903. p. 192
Block Card 2851 South Avenue
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Di Salle Plating Company (Toledo, Ohio) | factories | 2851 South Avenue (Toledo, Ohio) | industrial buildings | Long Meadows First Extension (Toledo, Ohio) | South Toledo Area (Toledo, Ohio
Revision of the austral South American species of Mortoniella (Trichoptera: Glossosomatidae: Protoptilinae) 2851
No full textBlahnik, Roger J., Holzenthal, Ralph W. (2011): Revision of the austral South American species of Mortoniella (Trichoptera: Glossosomatidae: Protoptilinae) 2851. Zootaxa 2851 (1): 1-75, DOI: 10.11646/zootaxa.2851.1.1, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.2851.1.
Moore, Robert B., 1860-1937 (SC 2851)
No full textFinding aid and scan (Click on Additional Files below) for Manuscripts Small Collection 2851. Letter, 13 November 1896, of Robert B. Moore, Bowen, Kentucky, to Frank Powers, Grayson, Kentucky. Moore, a lumber dealer, reports an increase in business. He also describes himself as a “sound money” man who voted for William McKinley in the recent presidential election. Despite anticipating a “hot time,” he reports finding no disturbances at his local polling place
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
Bacteriophage 2851 is a prototype phage for dissemination of the Shiga toxin variant gene 2c in Escherichia coli O157:H7
No full textStrauch E, Hammerl JA, Konietzny A, et al. Bacteriophage 2851 is a prototype phage for dissemination of the Shiga toxin variant gene 2c in Escherichia coli O157:H7. Infection and Immunity. 2008;76(12):5466-5477.The production of Shiga toxin (Stx) (verocytotoxin) is a major virulence factor of Escherichia coli O157:H7 strains (Shiga toxin-producing E. coli [STEC] O157). Two types of Shiga toxins, designated Stx1 and Stx2, are produced in STEC O157. Variants of the Stx2 type (Stx2, Stx2c) are associated with high virulences of these strains for humans. A bacteriophage designated 2851 from a human STEC O157 encoding the Stx2c variant was described previously. Nucleotide sequence analysis of the phage 2851 genome revealed 75 predicted coding sequences and indicated a mosaic structure typical for lambdoid phages. Analyses of free phages and K-12 phage 2851 lysogens revealed that upon excision from the bacterial chromosome, the loss of a phage-encoded IS629 element leads to fusion of phage antA and antB genes, with the generation of a recombined antAB gene encoding a strong antirepressor. In wild-type E. coli O157 as well as in K-12 strains, phage 2851 was found to be integrated in the sbcB locus. Additionally, phage 2851 carries an open reading frame which encodes an OspB-like type III effector similar to that found in Shigella spp. Investigation of 39 stx(2c) E. coli O157 strains revealed that all except 1 were positive for most phage 2851-specific genes and possessed a prophage with the same border sequences integrated into the sbcB locus. Phage 2851-specific sequences were absent from most stx(2c)-negative E. coli O157 strains, and we suggest that phage 2851-like phages contributed significantly to the dissemination of the Stx2c variant toxin within this group of E. coli
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