Describes the five-year masters degree program in physics at the Moscow State University. The program combines general instruction in physics and mathematics with specialized research experience. Discusses (1) entrance requirements, (2) course philosophy, and (3) course requirements. Selected examples of questions from the entrance and course…

The importance of meaningful context in language drills is stressed. Suggestions for preparing "contextualized drills for use in the language laboratory are given. (FWB)

Relates the experience of the Darien (Connecticut) High School in converting a scarcely used language laboratory into a vital foreign language resource center. (DS)

A study conducted by high school advanced bacteriology students appears to confirm the hypothesis that the incremental administration of antibiotics on several species of bacteria (Escherichia coli, Staphylococcus epidermis, Bacillus sublitus, Bacillus megaterium) will allow for the development of antibiotic-resistant strains. (PEB)

Describes sensitive and specific methods used to monitor tetrachlorodibenzodioxins and tetrachlorodibenzofurans. The procedures are suitable for detecting and quantifying these substances at the parts-per-trillion levels in complex environmental and biological samples. (Author/JN)

Discusses the nature and applications of mass-selective laser photoionization. The ionization can be done with a single intense laser pulse lasting a few billionths of a second with no molecular fragmentation. Applications focus on: (1) benzene clusters, excimers, and exciplexes; (2) metal clusters; and (3) triplet formation and decay. (Author/JN)

Free radical chlorination of methane is used in organic chemistry to introduce free radical/chain reactions. In spite of its common occurrence, demonstrations of the reaction are uncommon. Therefore, such a demonstration is provided, including background information, preparation of reactants/reaction vessel, introduction of reactants, irradiation,…