Abstract. Topological indices are the numerical value associated with chemical constitution purporting for correlation of chemical structure with various physical properties, chemical reactivity or biological activity. Graph theory is a delightful playground for the exploration of proof techniques in Discrete Mathematics and its results have applications in many areas of sciences. A graph is a ...

From the Department of Medicine, Mount Sinai School of Medicine of the City University of New York, New York 10029. These studies were supported in part by Grant-in-Aid A-162, National Institute of Arthritis and Metabolic Diseases, National Institutes of Health. Requests for reprints should be addressed to Dr. Alexander B. Gutman, Mount Sinai School of Medicine of the City University of New Yor...

Many methods for chromatographic separation of amino acids are now available, but their subsequent determination, generally employing ninhydrin, often leaves much to be desired. It was felt, therefore, that there was a need for a simple method of analysis based on the convenient paper technique and employing some means of determination less fickle than ninhydrin colorimetry. The method now pres...

Cell extracts of pseudomonads grown on hexadecanoic acid contained C(11) to C(19) acyl thiokinase, C(4) to C(14) acyl thiokinase, C(2) to C(6) acyl thiokinase, acetyl thiokinase, and acetokinase.