Results 271 to 280 of about 21,646,526 (289)
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A reexamination of the WAIS—R factor structure.
Psychological Assessment: A Journal of Consulting and Clinical Psychology, 1990We performed a series of restricted factor analyses on the 9 cohorts of the WAIS-R standardization sample in an effort to investigate the structure of this instrument. Several indices of fit were used including (a) the likelihood ratio test statistic, chisquare; (b) the LISREL Goodness of Fit Index; (c) the normed-fit index, with both a null and ...
Niels G. Waller, Irwin D. Waldman
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New England Journal of Medicine, 1970
Abstract Although the therapeutic use of antibiotics favors the selection of bacteria that contain R factor, it does not necessarily follow that man-made antibiotics have induced the evolution of R factor. We have obtained evidence that R factor evolved before the advent of the antibiotic era.
C E, Davis, J, Anandan
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Abstract Although the therapeutic use of antibiotics favors the selection of bacteria that contain R factor, it does not necessarily follow that man-made antibiotics have induced the evolution of R factor. We have obtained evidence that R factor evolved before the advent of the antibiotic era.
C E, Davis, J, Anandan
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Journal of Infectious Diseases, 1971
antimicrobial agents. Separate genetic determinants, grouped in various patterns on individual R factors, specify resistance to sulfonamides, penicillins and cephalosporins, chloramphenicol, tetracyclines, the kanamycin-neomycin group of antibiotics, and streptomycin, together with some related aminoglycoside antibiotics [1-3].
S A, Kabins, M V, Panse, S, Cohen
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antimicrobial agents. Separate genetic determinants, grouped in various patterns on individual R factors, specify resistance to sulfonamides, penicillins and cephalosporins, chloramphenicol, tetracyclines, the kanamycin-neomycin group of antibiotics, and streptomycin, together with some related aminoglycoside antibiotics [1-3].
S A, Kabins, M V, Panse, S, Cohen
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An R Factor Defects to Our Side
New England Journal of Medicine, 1972IN the battle between antibiotics and gram-negative bacilli much of the enemy's strategy is dictated by twisted circles of DNA known as R factors. R factors replicate autonomously within the cell as extrachromosomal genetic elements that can be transferred to other strains on contact by conjugation.
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2017
The resistance to antimicrobial drugs and the incidence of R factors were determined in coliform bacteria, isolated from stool and environmental (soil, water) specimens from an urban Xhosa community, as well as from a remote drug-frea Xhosa community in the Transkei.
Marcos, D, Woods, DR
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The resistance to antimicrobial drugs and the incidence of R factors were determined in coliform bacteria, isolated from stool and environmental (soil, water) specimens from an urban Xhosa community, as well as from a remote drug-frea Xhosa community in the Transkei.
Marcos, D, Woods, DR
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