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Peer reviewedSmith, Sherrel – Journal of Chemical Education, 1990
Detailed is a method in which short pieces of teflon tubing may be used for collection tubes for collecting preparative fractions from gas chromatographs. Material preparation, laboratory procedures, and results of this method are discussed. (CW)
Descriptors: Chemical Analysis, Chemistry, Chromatography, College Science
Peer reviewedWilliams, Kathryn R.; King, Roy W. – Journal of Chemical Education, 1990
Described are six multipulse experiments with an emphasis on their application to common problems in chemistry. Exercises in relaxation time measurement, spin echoes, and polarization transfer are proposed. (CW)
Descriptors: Chemical Analysis, Chemistry, College Science, Higher Education
Mims, Forrest M., III – Scientific American, 1990
The construction and use of an instrument to monitor ultraviolet radiation from the sun are discussed. A diagram of the ultraviolet-B radiometer which is connected to a digital voltmeter is provided. (CW)
Descriptors: Climate, College Science, Earth Science, Environmental Influences
