National Bureau of Standards Atomic Data Centers: review of recent and imminent publications

The past, present and near future compilations and bibliographics of atomic data by the three data centers of the National Bureau of Standards are reviewed. They include the topics of atomic transition probabilities, wavelengths, energy levels, and collision cross-sections. All but the last are prepared at the Gaithersburg, MD, site while cross-sections are compiled at the Joint Institute for Laboratory Astrophysics (JILA) at Boulder, CO. Only brief remarks regarding the JILA work are given to call attention to this activity.     

Selected systematic properties and some recent investigations of actinide metals and alloys

The actinide elements form a unique and scientifically interesting series. They display a wide range of physical properties from those characteristic of d-electron transition metals to those of the 4f electron, lanthanide metals. This article provides a brief summary of some important properties of the actinide elements and discusses how the changing role of the 5f electrons influences these properties. Recent results from studies on the actinides and extrapolated values of others have been incorporated into the presented systematics. Finally, some recommendations for future studies of the actinides are presented.     

Selected topics in biomedical polyurethanes. A review

Published literature on biomedical polyurethanes is reviewed. Selected topics concerning chemistry, structure-property relations, tissue-material interactions, surface properties, applications, processing, and sterilization, etc., are discussed.Presented at the SPE Scandinavia Seminar on Medical Polyurethanes, Oxford, UK, September, 1988.     

List of publications of Prof. Dr. H. J. Seifert

List of publications of Prof. Dr. H. J. Seifert     

The acid-base properties of Fast Grey R. A.

Summary The acid-base properties of Fast Grey R. A. have been studied with reference to the mode of chelation of the dye with different valent metals. The pK values of 3.83, 10.53 and 10.70 corresponding to the three steps of ionization of the free acid were evaluated by the aid of the relation between log [acid]/[salt] and p_H values obtained during the course of the potentiometric titration of the free acid with a free base.     

To 75th Anniversary of R. A. Khmel'nitskii

Russian Journal of General Chemistry -