A discussion of the past, present, and possible future developments in the field of reduction of organic compounds using hydrides. (BB)

This article discusses training programs for environmental technicians at wastewater treatment facilities. Special attention is given to start-up orientation and training. (CS)

Reviews new science equipment and products for the laboratory. Includes hand-held calculators, fiberglass fume hoods, motorized microtomy, disposable mouse cages, and electric timers. Describes 11 products total. Provides manufacturer name, address, and price. (MA)

This article relates the historical origins of the EPA's Priority Pollutants list and the development of the Priority Pollutant Protocol. Then, it summarizes the status of the current analytical procedures in their present and still-developing forms. (BB)

Describes process-based practical work used in Scottish high school examinations and evaluates this work against a standard of course objectives for practical work in general. (MLH)

Describes how to convert a bicycle pump into a vacuum pump by reversing the piston and replacing or removing the one-way valve. (MLH)

Discusses control of poliomyelitis and influenza by live and killed virus vaccines. Considered are the etiological agents, pathogenic mechanisms and epidemiology of each disease. Reviews recent scientific studies of the diseases. Recommends use of killed virus vaccines in controlling both diseases. (CS)

Discusses how students can investigate the relationship between the current and the voltage across a field coil by using a current that has a triangular waveform. (MLH)

Describes an interpretative experiment involving the application of symmetry and temperature-dependent proton and fluorine nmr spectroscopy to the solution of structural and kinetic problems in coordination chemistry. (MLH)

Discusses methods for observing oscillations in a chemical reaction about a steady state en route to equilibrium. (MLH)

Discusses advantages of radial diffusion assay in determining presence of enzyme and/or rough approximation of amount of enzyme activities. Procedures are included for the preparation of starch-agar plates, and the application and determination of enzyme. Techniques using plant materials (homogenates, tissues, ungerminated embryos, and seedlings)…

In adopting a taped foreign language course, whether purchased or self-made, one must consider goals, organization of learning units, type of exercises, language correctness stimuli, age appropriateness, and (for self-made courses) pause length, voice alternation, tone quality, speed of talking, and lesson length. (Text is in German.) (IFS/WGA)

Describes high school physics laboratory experiments that use lasers to show that a diffraction pattern is a Fourier analysis of the slit function. (MLH)

Discusses a special topics biochemistry course that uses membrance phenomena to illustrate the interplay of many physical chemistry principles. (MLH)

Describes a laboratory experiment that uses a programmable calculator and the concepts of activity and activity coefficients to examine the effect of ionic strength on equilibrium constants. (LH)