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Independence number, connectivity, and r‐factors
Journal of Graph Theory, 1989AbstractWe show that if r ⩾ 1 is an odd integer and G is a graph with |V(G)| even such that k(G) ⩾ (r + 1)2/2 and (r + 1)2α(G) ⩽ 4rk(G), then G has an r‐factor; if r ⩾ 2 is even and G is a graph with k(G) ⩾ r(r + 2)/2 and (r + 2)α(G) ⩽ 4k(G), then G has an r‐factor (where k(G) and α(G) denote the connectivity and the independence number of G ...
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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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