Describes an organic chemistry laboratory exercise which uses thermochromic compounds to study the thermodynamic effect of temperature on chemical equilbrium. (SL)

Describes a series of polarography experiments using commercially available pulse polarography instruments. (SL)

A laboratory experiment is described which illustrates such concepts as resonance, inductive, steric, and solvation effects in a beginning organic chemistry course. This experiment is designed to encourage students to predict results and interpret their findings. (MR)

Describes an experiment in which students determine the level of cholesterol in serum. (SL)

Describes an undergraduate analytical laboratory experiment demonstrating the use of masking to obtain selectivity in complexometry. (SL)

Describes an experimental procedure for illustrating general principles of photochemical reaction kinetics. (SL)

Describes experiments in the measurement of resonances in a nuclear reaction and the measurement of elastic scattering cross section. (SL)

Reviews the SDS-polyacrylamide gel electrophoresis technique for the separation of proteins and determination of their molecular weights. (SL)

Presents a laboratory project in which students analyze quantitatively organic and inorganic industrial waste. (SL)

Presents a biochemistry laboratory experiment in enzymology using polyphenoloxidase or tyrosinase. (SL)

Presents an experimental method for introducing special relativity which utilizes the distinction between Doppler effects for sound and for light. (SL)

Describes a lecture demonstration which illustrates changes in the visible spectra of oxygen transport proteins upon reversible oxygen binding. Provides a comparison of the physical characteristics of oxygen storage and transport proteins. Reviews essentials for preparation of the materials. (ML)

A course to familiarize medical students with the principles of good medical research study design and analysis focuses on three types of studies: clinical trials, laboratory science, and epidemiology and biostatistics. (MSE)

Describes a comparison of scale of laboratory with respect to time efficiency. Compared full scale and one-tenth scale Grignard reactions with full scale averaging 330 minutes to completion and scaled-down averaging 204. Savings are seen in air pollution, toxicity, solvent cost, and time. (JM)

Describes use of a Fresnel biprism to demonstrate double-slit interference with polarized light. Discusses polarization and phase properties of a randomly polarized gas. (JM)