Results 101 to 110 of about 12,257,891 (126)

R factor compatibility groups

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, J N, Grindley, E S, Anderson   +2 more
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{k, r – k}-Factors of r-Regular Graphs

Graphs and Combinatorics, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Akbari, Saieed, Kano, Mikio
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R Factor Transmission In Vivo

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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The Ecology of R Factors

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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R Factors for Aminoglycoside Antibiotics

Journal of Infectious Diseases, 1969
The 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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On the number of (r,r+1)‐ factors in an (r,r+1)‐factorization of a simple graph

Journal of Graph Theory, 2009
AbstractFor 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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R Factors

Journal of Infectious Diseases, 1969
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Factor Structure of the WISC-R

Multivariate Behavioral Research, 1989
A 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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R Factors in X-ray fiber diffraction. II. Largest likely R factors

Acta Crystallographica Section A Foundations of Crystallography, 1989
The largest likely R factor (that for a structure uncorrelated with the correct structure) is smaller for an X-ray fiber diffraction analysis than for a traditional single-crystal analysis. For example, the largest likely R factor for tobacco mosaic virus determined by fiber diffraction at 3 A resolution is 0.31, compared to 0.59 for a single-crystal ...
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Cancer and the unavoidable R factor

Science, 2017
Cancer 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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