THE " MICROBE DOYEN."

Dr. Doyen and Cancer

The Doyen Wilson Theorem for Minimum Coverings with Triples

In this article necessary and sufficient conditions are found for aminimum covering ofKm with triples to be embedded in a minimum covering ofKn with triples. c © 1997 JohnWiley & Sons, Inc. J Combin Designs 5: 341–352, 1997

The Doyen-Wilson Theorem Extended to 5-Cycles

Let ~m = {0, 1 . . . . , m 1}. A n m-cycle is a graph (v0, V l , . . . , u~_ 1) with vertex set {viii ~ E m} and edge set {{vi, Vi+a}]i ~ 7/m} (reducing the subscript modulo m). A n m-cycle system of a graph G is an o rdered pair (V, C), where V is the vertex set of G and C is a set of m-cycles, the edges of which part i t ion the edges of G. A n m-cycle system (of order n) is an m-cycle system...

E.V. McCollum: doyen of nutrition science.

he year 1979 marks the centennial of the birth of Elmer Verner McCollum. He was born on a Kansas farm homesteaded by his father in 1863 and received his academic training in chemistry at the University of Kansas and at Yale University. As a member of the faculty of the College of Agriculture at the University of Wisconsin from 1907 to 1917, he gained widespread attention for his pathfinding dis...

Host Specificity in Microbe-Microbe Interactions

ventional monocultural crop systems often supported by high inputs of pesticides and fertilizers to sustainable agriculture. Although precise definitions of sustainable agriculture vary, one key aspect is a reduction in agrichemical inputs with a corresponding shift to alternative crop protection strategies, such as cultural practices, organic amendments, resistant or tolerant crop varieties, a...