Ming H. Jih, MD, PhD; Paul M. Friedman, MD; Arash Kimyai-Asadi, MD; Edward S. Friedman, MD; Sharon R. Hymes, MD; Leonard H. Goldberg, MD; DermSurgery Associates (Drs Jih, P. M. Friedman, Kimyai-Asadi, and Goldberg), The University of Texas School of Medicine (Dr P. M. Friedman), Baylor College of Medicine (Dr E. S. Friedman), and The University of Texas M. D. Anderson Cancer Center (Drs Hymes a...

Since Schmid & Schwartz (1952) described an experimental hepatic porphyria induced in rabbits by Sedormid (2-isopropylpent-4-enoylurea), several drugs chemically related to Sedormid (Goldberg & Rimington, 1955; Stich & Decker, 1955a, b; Talman, Labbe & Aldrich, 1957) and some barbiturates (Goldberg, 1954a) have been shown to cause excretion of both porphobilinogen and porphyrins in animals. Gol...

We determine the exact values of the circular chromatic index of the Goldberg snarks, and of a related family, the twisted Goldberg snarks.

Epistemologists focus primarily on cases of knowledge, belief, or credence where the evidence which one possesses, or on which one is relying, plays a fundamental role in the epistemic or normative status of one’s doxastic state. Thus one’s belief might be rational, or justified, or amount to knowledge (if true and other conditions are met); or in a partial belief framework, one’s credence migh...

The three known classes of convex polyhedron with equal edge lengths and polyhedral symmetry--tetrahedral, octahedral, and icosahedral--are the 5 Platonic polyhedra, the 13 Archimedean polyhedra--including the truncated icosahedron or soccer ball--and the 2 rhombic polyhedra reported by Johannes Kepler in 1611. (Some carbon fullerenes, inorganic cages, icosahedral viruses, geodesic structures, ...