Meckel's diverticulum is the most significant diverticulum occurring in the jejunum or ileum. It is a remnant of an omphalomesenteric or vitelline duct which normally obliterates at about the seventh week of foetal life (Oppenheimer, 1962). For reasons unknown, a remnant of the duct may persist, more or less completely, as a tube or cord arising usually from the ileum 25-90 cm from the ileocaec...

Steven B. Oppenheimer Steven B. Oppenheimer is director of the Center for Cancer and Developmental Biology, California State University, Northridge, CA 91330. He has been named Statewide Trustees Outstanding Professor of the CSU system. Author of about 50 publications in cancer biology, his work includes two texts, Cancer, A Biological and Clinical Introduction and Cancer Prevention Guidebook. ...

This book is a timely read, coinciding as it does with the moving of the renowned Exploratorium from the Palace of Fine Arts at the foot of the Golden Gate Bridge in San Francisco, where it was established in 1969, to its new and larger location at Pier 15 on the Embarcadero. This institution continues to embody the vision of its founder, Frank Oppenheimer, the subject of this highly personal y...

In this paper, I attempt to reconcile two different theoretical approaches to the philosophy of fiction, namely, the theory of abstract objects (hereafter ‘object theory’) and pretense theory. I think that the seminal insights of both theories are, for the most part, consistent with one another. To make this idea plausible, I spend a large part of what follows both correlating the basic notions...

We review mathematical results concerning exponentially small corrections to adiabatic approximations and Born–Oppenheimer approximations.