Described is the basic biology involved in mapping chromosomes as presented at a symposium at a recent meeting of the American Chemical Association which focused on the Human Genome Initiative. Different types of gene maps and techniques used to produce gene maps are discussed. (CW)

Described is an experiment in which factor analysis is used to identify and quantify the components of mixtures containing up to four species. Discussed are the theory, procedures, and sample results for this activity. (CW)

Presented are laboratory methods which allow the demonstration and determination of the diffusion coefficients of compounds ranging in size from water to small proteins. Included are the procedures involving the use of a spectrometer, UV cell, triterated agar, and oxygen diffusion. Results including quantification are described. (CW)

A demonstration related to current transport through a superconductor is presented. The principle of the experiment, procedures for the demonstration, and technical data are provided. (CW)

A room-temperature demonstration of a floating magnet using a high-temperature superconductor is described. The setup and operation of the apparatus are described. The technical details of the effect are discussed. (CW)

Some of the background factors and deleterious effects of oil spills are discussed. A classroom activity which demonstrates an oil spill, how the oil affects feathers, and one clean-up method is presented. A list of recent oil spills and three additional resources are included. (CW)

Discussed is an activity designed to teach small mammal ecology and the scientific method using fluorescent dyes and pigments. Procedures for analyzing home ranges and social organizations are described. A list of 16 references is included. (CW)

The synthesis of 4-acetylbiphenyl on a semimicroscale for use as an organic laboratory exercise is described. Materials, experimental procedures, and results are discussed. Sample NMR spectra used in the resulting analysis are provided. (CW)

Introduces and describes the Laboratory Procedure Module (LPM) modified from a task analysis approach used by laboratory technical training programs based on instructional system design model. Overviews the LPM design, including primary goal, enabling objectives, task steps, overview, demonstration, written test, practice, and procedural…

Using fourier transformation methods in nuclear magnetic resonance has made possible increased sensitivity in chemical analysis. This article describes these methods as they relate to magnetization, the RF magnetic field, nuclear relaxation, the RF pulse, and free induction decay. (CW)

Described is a laboratory activity in which high school students may perform a karyotype analysis of their own chromosomes. Materials and procedures are detailed. A source of materials for this exercise is provided. (CW)

Presented is a set of procedures designed to check the design, ergonomics, illumination, function, optics, accessory equipment, and image quality of a microscope being considered for purchase. Functions for use in a petrology or mineralogy laboratory are stressed. (CW)

Described is an advanced undergraduate laboratory course which gives students an opportunity to grasp the material better than in the segmented approach. A list of required experiments and a discussion of the evaluation of the course are provided. (CW)

Discusses the change in pressure as a balloon expands. Describes the pressure change in a spherical soap bubble and a rubber membrane on the tube. Provides demonstrations when two balloons are connected by a tube. Lists five further reading materials. (YP)

This paper includes a general account of the biology of the brine shrimp, instructions on how the organism may be cultured, the results of some experiments on the ecology and population biology of the species, and some suggestions for further studies. (Author/CW)