Babylonian Eclipse Observations from 750 BC to 1 BC

Observations on vitamin Bc conjugase from hog kidney.

Some time ago we called attention to the wide-spread occurrence in nature of an enzyme which releases vitamin B, from a microbiologically inactive form (1). In work designed to characterize the enzyme in hog kidney through a study of this reaction it became apparent that the kinetics of the reaction were very markedly influenced by the purity of the substrate. With the isolation of vitamin B, c...

On BC-trees and BC-subtrees

A BC-tree (block-cutpoint-tree) is a tree (with at least two vertices) where the distance between any two leaves is even. Motivated from the study of the “core” of a graph, BC-trees provide an interesting class of trees. We consider questions related to BC-trees as an effort to make modest progress towards the understanding of this concept. Constructive algorithms are provided for BC-trees with...

5 J an 1 99 9 Lifetimes of Ξ + bc and Ξ 0 bc baryons

1 BC : a First - Order Bayesian Classi

In this paper we present 1BC, a rst-order Bayesian Classi-er. Our approach is to view individuals as structured terms, and to distinguish between structural predicates referring to subterms (e.g. atoms from molecules), and properties applying to one or several of these sub-terms (e.g. a bond between two atoms). We describe an individual in terms of elementary features consisting of zero or more...

1 BC : a First - Order Bayesian Classi

In this paper we present 1BC, a rst-order Bayesian Classier. Our approach is to view individuals as structured terms, and to distinguish between structural predicates referring to subterms (e.g. atoms from molecules), and properties applying to one or several of these subterms (e.g. a bond between two atoms). We describe an individual in terms of elementary features consisting of zero or more s...