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Rinehart, Kenneth L., Jr. – Science, 1982
Discusses reactions and characteristics of fast atom bombardment (FAB) mass spectroscopy in which samples are ionized in a condensed state by bombardment with xenon or argon atoms, yielding positive/negative secondary ions. Includes applications of FAB to structural problems and considers future developments using the technique. (Author/JN)
Descriptors: Biochemistry, Chemical Analysis, Chemistry, College Science
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Freeman, David H. – Science, 1982
Reviews trends in liquid chromatography including apparatus, factors affecting efficient separation of a mixture (peak sharpness and speed), simplified problem-solving, adsorption, bonded phase chromatography, ion selectivity, and size exclusion. The current trend is to control chemical selectivity by the liquid phase. (Author/JN)
Descriptors: Chemical Analysis, Chemistry, Chromatography, College Science
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Solem, Johndale C.; Baldwin, George C. – Science, 1982
By using intense pulsed coherent x-ray sources it will be possible to obtain magnified three-dimensional images of living elementary biological structures at precisely defined instants. Discussed are sources/geometrics for x-ray holography, x-radiation interactions, factors affecting resolution, recording the hologram, high-intensity holography,…
Descriptors: Biology, College Science, Higher Education, Holography
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Rosencwaig, Allan – Science, 1982
Thermal features of and beneath the surface of a sample can be detected and imaged with a thermal-wave microscope. Various methodologies for the excitation and detection of thermal waves are discussed, and several applications, primarily in microelectronics, are presented. (Author)
Descriptors: College Science, Electronics, Higher Education, Laboratory Procedures
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Busch, Kenneth L.; Cooks, R. Graham – Science, 1982
Desorption ionization (DI) is used to obtain mass spectra of molecules whose vaporization by heating may lead to thermal degradation. Discusses DI techniques, characteristics of DI mass spectra, ion production, current applications of DI in mass spectroscopy, developments in DI, and prospects for future evolution of new DI techniques. (Author/JN)
Descriptors: Chemical Analysis, Chemistry, College Science, Higher Education
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Miller, James C.; And Others – Science, 1982
A linear photodiode array is used as the photodetector element in a new ultraviolet-visible detection system for high-performance liquid chromatography (HPLC). Using a computer network, the system processes eight different chromatographic signals simultaneously in real-time and acquires spectra manually/automatically. Applications in fast HPLC…
Descriptors: Chemical Analysis, Chemistry, Chromatography, College Science
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McKusick, Blaine C. – Science, 1981
A National Research Council report has recommended practices for safe handling and disposal of hazardous chemicals in laboratories. They are a practical alternative to detailed regulations on individual chemicals. Topics discussed include physical hazards, chemical hazards, chronic hazards, laboratory ventalation, protective equipment,…
Descriptors: Accident Prevention, Chemistry, College Science, Hazardous Materials
Peer reviewed Peer reviewed
Chui, Glennda – Science, 1988
Expresses concern over recent actions by coalitions of neighborhood activists and animal rightists in the San Francisco area that are seeking to block new biology laboratories. Argues that costly delays and disurption of research could result. (TW)
Descriptors: Animal Facilities, College Science, Controversial Issues (Course Content), Higher Education