Describes an optical cell, suitable for high-pressure studies between at least -130 and +150 degrees Celsius, which may be assembled for about $50. Discusses experimental demonstration of principles involved when using the apparatus, including effects of pressure on coordination of ions in solution and on reaction rates in solution. (JN)

The theme articles present strategies for achieving quality laboratory projects in vocational agriculture. They describe fundamentals of the construction of quality projects and stress the importance of quality instruction. (JOW)

Discusses the Rugby clock as a source of project material, use of ZX81 for experimental science, computer dice analog, oil recovery from reservoirs, and computer simulation of Thompson's experiment for determining e/m for an electron. Activities/procedures are provided when applicable. Also presents questions (and answers) related to time-coded…

Describes a procedure used to optimize instrument performance as taught in a fourth-year undergraduate instrumental analysis course. Gives rules for fixed and variable size simplex and discusses calculations. Also explains use of computer simulation of instruments as a tool in teaching the simplex technique. (JM)

Discusses ATP synthesis in mitochondria/chloroplasts and cause of an antipodal high tide. Also discusses a simple field experiment on regulation of osmotic potential by Salicornia (pioneer plant of estuarine sale marshes) and use of a key to identify British mosquito larvae. The latter includes procedures for collecting, recognizing, and finding…

A series of workshops demonstrating technical skills and practical procedures in internal medicine was conducted for fourth-year medical students. The workshops provided the students the chance to observe and in some situations to perform the technical procedures under supervision before beginning their residencies. (Author/MLW)

Two brief scales were proposed to assess effectiveness of teaching in laboratory and seminar/discussion group classes. (Author)

Discusses five approaches used by industry/colleges to provide local area network (LAN) capabilities in the analytical laboratory: (1) mixed baseband bus network coupled to a star net; (2) broadband bus network; (3) ring network; (4) star network coupled to broadband net; and (5) simple multiprocessor center. Part I (September issue) focused on…

Traces the history of physiology at the University of Michigan, focusing on facilities, curriculum program and instruction, classic experiments, and faculty. Contributions of Henry Sewall and Warren Plimpton Lombard are discussed at some length. (JN)

Compares two methods (batch and continuous) in which microorganisms are used to produce industrial chemicals. Describes batch and continuous stirred-tank reactors and offers reasons why the batch method may be preferred. (JN)

Summarizes 10 cases of lawsuits against science teachers, with the courts' decisions. Cases involved hazardous laboratory experiments, faulty power equipment, and the use of nonlaboratory rooms for science experiments. Recommendations are made regarding safety guidelines for middle and secondary school science classrooms. (CS)

Details the use of measuring instruments, computer terminals, and other high technology laboratory aids for the visually handicapped chemistry student. Use of these aids at East Carolina University is also described. (CS)

Two demonstrations are described: (1) a sunset effect using a gooseneck lamp and 20 sheets of paper and (2) the preparation and determination of structural features of dimethyl sulfoxide (DMSO) by infrared spectroscopy. (SK)

Describes a method to allow direct observation of a chick embryo development from three days to about 17 days of incubation, by culturing the entire embryo in a petri dish. (DS)

Provides examples of several classroom activities utilizing the American horseshoe crab (Limulus Polyphemus), including raising fertilized eggs, fertilizing eggs in vitro, and testing water samples. Includes background information on the natural history, life cycle, and breeding habits of this animal. (DS)