Describes new experimental techniques, such as dye-laser photodetachment studies, which have recently provided accurate values for the electron affinity of numerous elements. Provides a periodic chart with available electron affinity data. (MLH)

Describes a biochemical concept called Mitchell's chemiosmotic hypothesis, which proposes a system that catalyzes the hydrolysis of ATP to ADP and inorganic phosphate. The system is reversible and causes a translocation of protons across a physiological membrane. (MLH)

Discusses the graphite to diamond transformation and a phase diagram for carbon. Describes high temperature-higher pressure experimental apparatus and growth of diamonds from seed crystals. Reviews properties of the diamond which suggest uses for the synthetic product. Illustrations with text. (GH)

Discusses dichlorodiammineplatinum's ability to inhibit bacterial cell divisions and its use as an antitumor agent. (SL)

Provides a brief history of chemistry up to the founding of the American Chemical Society in 1876. Includes developments in the understanding of matter, phlogiston theory, atomic theory, and chemical reactions. (MLH)

Reviews the history of selected topics in inorganic chemistry, including catalysis, mechanisms, transition metals, and noble gases. (MLH)

Reviews the history of selected topics in physical chemistry, including kinetics, thermodynamics, quantum chemistry, and nuclear chemistry. (MLH)

Reviews the history of selected topics in analytic chemistry, especially analytical instrumentation. (MLH)

Reviews the history of drug research and the chemical aspects of medical research. (MLH)

Reviews the history of macromolecular synthesis and structure. (MLH)

Provides a historical development of efforts to explain biological phenomena in terms of chemical substances present in living organisms. (MLH)

Describes four toxic effects of red tide microorganisms and the economic impact of the red tide bloom on seafood and related industries in several locations of the U.S. (MLH)

Discusses research activities conducted by scientists from the United State of America, Canada, and the United Kingdom to determine the long-term effects on natural marine ecosystems, especially plankton communities, of such pollutants as heavy metals, synthetic hydrocarbons, and petroleum hydrocarbons. (CC)

Outlines general principles in observing sharp electron spin resonance (ESR) lines in the solid state by incorporating the transition metal ion of interest into an isostructural diamagnetic host material in small concentration. Examples of some recent studies are described. (CS)