Results 261 to 270 of about 21,652,589 (289)
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New England Journal of Medicine, 1970
THE ability of many gram-negative bacilli to resist certain commonly used antibiotics has been shown to be mediated in large part by R factors.
D H, Smith, P, Gardner
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THE ability of many gram-negative bacilli to resist certain commonly used antibiotics has been shown to be mediated in large part by R factors.
D H, Smith, P, Gardner
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{k, r – k}-Factors of r-Regular Graphs
Graphs and Combinatorics, 2013zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Saieed Akbari, Mikio Kano
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Journal of Bacteriology, 1969
Experimental infections were induced in weanling pigs orally both with nalidixic acid (NA)-sensitive and -resistant strains of Salmonella choleraesuis var. kunzendorf , designated RC221 and RC221NA, respectively. Prior to the time of infection, cultures of normal bacterial flora were isolated
H, Jarolmen, G, Kemp
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Experimental infections were induced in weanling pigs orally both with nalidixic acid (NA)-sensitive and -resistant strains of Salmonella choleraesuis var. kunzendorf , designated RC221 and RC221NA, respectively. Prior to the time of infection, cultures of normal bacterial flora were isolated
H, Jarolmen, G, Kemp
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On the number of (r,r+1)‐ factors in an (r,r+1)‐factorization of a simple graph
Journal of Graph Theory, 2009AbstractFor integers d≥0, s≥0, a (d, d+s)‐graph is a graph in which the degrees of all the vertices lie in the set {d, d+1, …, d+s}. For an integer r≥0, an (r, r+1)‐factor of a graph G is a spanning (r, r+1)‐subgraph of G. An (r, r+1)‐factorization of a graph G is the expression of G as the edge‐disjoint union of (r, r+1)‐factors.
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The molecular nature of R-factors
Journal of Molecular Biology, 1966The acquisition of infectious multiple drug resistance factors by Proteus mirabilis was correlated with the addition of one or more physically recognizable, native, satellite DNA fractions. The spontaneous loss of one or more drug resistance characteristics carried by R-factors was correlated with either an apparent loss of particular density regions
Stanley Falkow +3 more
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Molecular and General Genetics MGG, 1972
Eight R factors are described which fall into four compatibility groups, distinct from previously described F-like and I-like groups. E. coli K12 carrying one of these factors, TP114, supports multiplication of the I-specific phage If1. However, TP114 is fully compatible with the I-like factor T-Δ and with all the other R factors described in this ...
N D, Grindley +2 more
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Eight R factors are described which fall into four compatibility groups, distinct from previously described F-like and I-like groups. E. coli K12 carrying one of these factors, TP114, supports multiplication of the I-specific phage If1. However, TP114 is fully compatible with the I-like factor T-Δ and with all the other R factors described in this ...
N D, Grindley +2 more
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Observations on the Factor Structure of the WAIS-R
Assessment, 2000Confirmatory factor analyses (CFAs) revealed 2 important characteristics of the standardization data of the Wechsler Adult Intelligence Scale-Revised. One finding was that Digit Symbol fit better on an attentional factor in younger groups, but fit was better when Digit Symbol loaded on a visual-perceptual factor in older groups.
Ward, LC, Axelrod, BN, Ryan, JJ
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Factor Structure of the WISC-R
Multivariate Behavioral Research, 1989A simultaneous maximum likelihood confirmatory factor analysis was performed on the 12 subtests the WISC-R in the 11 age groups of normative sample. Several models were fit to the data and compared, including: a single-factor model; orthogonal and oblique two-factor models, comprised of the Virbal and Performance subtests, respectively; and orthogonal ...
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Cancer and the unavoidable R factor
Science, 2017Cancer Etiology Most textbooks attribute cancer-causing mutations to two major sources: inherited and environmental factors. A recent study highlighted the prominent role in cancer of replicative (R) mutations that arise from a third source: unavoidable errors associated with DNA replication. Tomasetti et al.
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R Factors for Aminoglycoside Antibiotics
Journal of Infectious Diseases, 1969The definition of R factors by Japanese scientists 10 years ago opened a new chapter in the saga of antibiotic resistance among enteric bacteria [1]. This package of extrachromosomal genes, comprised of the resistance determinants, which mediate resistance to a variety of environmental hazards, and the resistance transfer factors (RTF), which mediate ...
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