Details ab initio crystal orbital calculations using all-trans-polyethylene as a model. Describes calculations based on various forms of translational symmetry. Compares these calculations with ab initio molecular orbital calculations discussed in a preceding article. Discusses three major approximations made in the crystal case. (CW)

Reports results of surveys received from universities concerning aspects of departmental operation which include type of institution, numbers of faculty with academic appointments, salaries, budgets and graduate program stipends, sources of support and areas of study/research. Some data are represented by tables and graphs. (RT)

Describes three situations in which computer software was used in a chemistry laboratory. Discusses interfacing voltage output instruments with Apple II computers and using spreadsheet programs to simulate gas chromatography and analysis of kinetic data. Includes information concerning procedures, hardware, and software used in each situation. (CW)

In this article, the third part of a series, the results of ab initio polymer calculations presented in part 2 are discussed. The electronic structure of polymers, symmetry properties of band structure, and generalizations are presented. (CW)

Describes an experiment designed to use the ability of duckweed to convert the secondary hydroxyl moieties into ketone groups. Discusses the preparation of plant material, materials, procedures, and results for this biotransformation experiment for undergraduate students. (CW)

Describes a simple hands-on model of water-rock interaction that can be constructed in the classroom using styrofoam bowls and foil-wrapped candies. This interactive simulation allows students to vary the factors which control water-rock interaction and to obtain immediate results. (Author/CW)

Introduced is a magnetic compass with no moving parts. Presented are the principles of the compass and the method to make the compass. Shows a lodestone compass which is the most primitive compass form. (YP)

Presented is a simple demonstration of siphon action by using straws without sucking, or filling and closing one end. Includes the method, figures of the demonstration, and four questions for students on the demonstration. (YP)

Presents an apparatus, a solid-state sound generator in a plastic ball. Includes pictures of the ball and a diagram of the piezo horn. (YP)

Suggests methods for achieving creativity, including divergent and convergent thinking, in engineering education. Discusses creativity exercises, creating an atmosphere hospitable to creativity, and identifying the creatively gifted. (YP)

Traces the development of analytical chemistry in Europe. Asserts that analytical chemistry should not be intertwined with other branches of chemistry. Argues that analytical chemistry education should aim to create graduates who have adequate knowledge and are aware of their responsibility to society and to nature. (TW)

Describes reforms of university engineering education in Spain and suggests these reforms as guidelines for the training of European Engineers. Discusses the cyclic approach whereby an engineer acquires generalized "formation" via specialization. States that cultural differences should be respected. (CW)

Discusses how professional institutions have influenced the content and level of engineering courses in Ireland. Describes how industrial demand leads to the provision of a wide range of courses at different levels. (CW)

Discusses the applicability and advantages of using yeasts as popular and ideal model systems for studying and understanding eukaryotic biology at the cellular and molecular levels. Cites experimental tractability and the cooperative tradition of the research community of yeast biologists as reasons for this success. (RT)

Described is the separation of dyes using a conventional liquid chromatographic pump and a glass column. Included are the preparation of the column and dye separations. (CW)