Presented is a review of selected literature on emission spectrometry published during 1982 and 1983. The review is organized under these headings: books and reviews; spectral descriptions and classifications; instrumentation; standards, samples, nomenclature, calibration, calculations; excitation sources; selected applications; and meetings. (JN)

Reviews developments in ultraviolet and light absorption spectrometry from December 1981 through November 1983, focusing on the chemistry involved in developing suitable reagents, absorbing systems, and methods of determination, and on physical aspects of the procedures. Includes lists of spectrophotometric methods for metals, non-metals, and…

Eleven videotaped kinetics and catalysis demonstrations are described. Demonstrations include the clock reaction, oscillating reaction, hydrogen oxidation in air, hydrogen-oxygen explosion, acid-base properties of solids, high- and low-temperature zeolite reactivity, copper catalysis of ammonia oxidation and sodium peroxide decomposition, ammonia…

An experiment which introduces students to infrared spectroscopy and the solubility behavior of various organic compounds is described. The experiment also serves to integrate some of the basic chemical reactions of functional groups with their spectral properties. (JN)

Describes an experiment in which several metallo complexes with different central atoms are prepared. Background information on these compounds is provided, including requirements for their formation, preparation methods, and comments on their general properties and analysis. (JN)

Carbaryl, 1-naphthyl-N-methylcarbamate, is the biodegradable (soft) insecticide most commonly marketed by the Union Carbide Corporation under the trade name of Sevin. Procedures for the synthesis and testing of carbaryl and for the testing of some compounds similar to carbaryl are provided. Equations showing its synthesis from methyl isocyanate…

Described is an advanced undergraduate physics laboratory experiment for determining an area, and bandwidth-independent parameter, D* ("dee star"), of an infrared detection devices' detectivity. (SL)

Presented is a practical scheme to enable introductory biology students to investigate the mechanism by which urea is synthesized in the liver. The tissue-slice technique is discussed, and methods for the quantitative analysis of metabolites are presented. (Author/SL)

Described is a simple apparatus to determine acceleration due to gravity. It utilizes direct contact switches in lieu of conventional photocells to time the fall of a ball bearing. Accuracies to better than one part in a thousand were obtained. (SL)

Discusses precaution in handling laboratory chemicals and research animals. Gives references, suggested readings, and a table showing fire hazard properties of some flammable liquids. (MLH)

The agencies listed in this document are amending the Federal Policy for the Protection of Human Subjects, which was published in the Federal Register on June 18, 1991, to change all references to the Office for Protection from Research Risks (OPRR) to the Office for Human Research Protections (OHRP); revise the footnote found at the end of…

This interpretive study of the implementation of a school-based assessment scheme of biology practical work in Hong Kong examines the struggles of three teachers with the issue of fairness in relation to their classroom actions. Though the teachers' discourses were dominated by, and their classroom actions were pre-eminently influenced by, the…

Describes the experimental procedures used for detecting DNA and RNA synthesis in xenopus cells by autoradiography. The method described is suitable for senior high school laboratory classes or biology projects, if supervised by a teacher qualified to handle radioisotopes. (JR)

Describes an experiment designed to provide the opportunity for studying some of the parameters affecting the stability of Vitamin C in various environments, and to acquaint the student with an experimental procedure for studying simple reaction kinetics and the calculations of specific rate constants. (Author/JR)