Presents two hydroboration-alkylation sequences, each requiring a three-hour laboratory period, that demonstrate the synthetic utility of the organoboranes. (MLH)

Discusses research on the structures of metalloproteins and the role of iron in biological transport systems. (MLH)

Selectively reviews the research literature on the relation of life events, stress, and the onset of illness; delineates trends in the development of this research, and evaluates the conceptual and methodological approaches employed. (MLH)

Science kit is a tool used to teach science in several schools. Science kit inservices are intended to provide teachers with the skills needed for using science kits. The evaluation of science kit/inservice workshops to assess their effectiveness to enhance teachers' science knowledge, positive attitude toward science, and science teaching is an…

The 25th anniversary of Earth Day is 1995. This issue highlights useful, high quality educational materials and other resources that can be used to discuss environmental issues in the classroom. Activities, resources, and teaching materials in this Earth Day issue include: ATLAS 1: Studying Mysteries in the Earth's Atmosphere; Completing the…

Discusses a new method of presenting the scattering theory, including classical explanation of cross sections, quantum mechanical expressions for phase shifts, and use of a computer to solve problems. (CC)

Reviews properties of nerves, analogous networks in propagation of electrical signals in axons, and regenerative changes in membrane permeability due to propagation of the action potential, which can be explained in the noncalculus physics course. (CC)

Consultant feels that too often the science text receives undue emphasis, that it should serve only as a guide in developing a progression of concepts and skills with the students. (GB)

Discusses Jacobus Henricus van't Hoff's revolutionary theory of the asymmetric carbon atom and its early reception among his contemporaries in the Netherlands. Indicates that the extension of the new idea to practical problems gives the impetus to the development of stereochemistry. (CC)

Presents fundamentals of the glassy state which can serve as an introductory, phenomenological, and nonmathematical exposure to undergraduates in at most two lectures. Suggests the use of the material following students' acquisition of an elementary knowledge of thermodynamics, liquids, and the crystalline state. (CC)

Discusses the flow characteristics of thixotropic and negative thixotropic fluids; various theories underlying the thixotropic behavior; and thixotropic phenomena exhibited in drilling muds, commercial paints, pastes, and greases. Inconsistencies in the terminology used to label time dependent effects are revealed. (CC)

Discusses the origin of de Broglie's concept and its influences on his contemporaries, notably on Einstein, Schrodinger, Elsasser, Davisson, and Thomson. Indicates that the theory served not only as the starting point of quantum mechanics, but also opened new experimental possibilities. Historical inaccuracies are corrected with new material…