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Application of Differential Thermal Analysis to the. Characterization of Urea Clathrates of Sodium Alkane Sul- fonates. Arthur F. Findeis, Klaus D. W...
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PITTSBURGH CONFERENCE Oscar Menis, National Bureau of Standards, Washington, D. C. 20234. 9:25 Determination of Particle Size Distribution of Isolated Nonmetallic Inclusions in Steel. R. M. Raybeck, L. C. Pasztor, Jones and Laughlin Steel Corp., 900 Agnew Rd., Pitts­ burgh, Pa. 15230. THERMAL METHODS OF ANALYSIS Monday Evening—Pittsburgh Room J . L. Morley, P r e s i d i n g

7:30 Application of Differential Thermal Analysis to the Characterization of Urea Clathrates of Sodium Alkane Sul­ fonates. Arthur F. Findeis, Klaus D. W. Rosinski, Dept. of Chemistry, University of Alabama, University, Ala. 35486. 7:50 A Thermometric Method for the Analysis of Aqueous Solutions of Weak Organic Bases. C. H. Spink, M. Y. Spink, Juniata College, Huntington, Pa. 8:10 Conditions for Optimum TGA Sensitivity at Atmos­ pheric Pressure. Lee Cahn, Norbert C. Peterson, Cahn In­ strument Co., 7500 Jefferson St., Paramount, Calif. 8:30 Thermogravimetric Studies of Hydrogen-Deuterium Exchange at Different Temperatures and Pressures. A. V. Tets, H. G. Wiedemann, H. P. Vaughan, Mettler Instrument Corp., 20 Nassau St., Princeton, N. J. 08540. 8:50 A Versatile High Performance DTA Cell for Use to 1600° C. Paul F. Levy, William J. Fitzpatrick, E. I. du Pont de Nemours & Co., Inc., 2102 Northeast Blvd., Wilmington, Del. 19898. 9:10 A New High Sensitivity Differential Thermal Analyzer. Paul F. Levy, E. I. du Pont de Nemours & Co., Inc., 2102 Northeast Blvd., Wilmington, Del. 19898. NMR SPECTROSCOPY

Ring Proton. F. R. McDonald, A. W. Decora, G. L. Cook, Laramie Petroleum Research Center, Bureau of Mines, P. 0 . Box 3395, University Station, Laramie, Wyo. 7:50 Proton-Stabilized High Resolution Carbon-13 NMR Spectra. Kazuo Nakagawa, Taizo Uchiyama, Tatsumi Ohki, Shoji Murakami, Japan Electron Optics Laboratory Co., Inc., New Towyo Bldg., 3-2 Marunouchi Chiyodaku, Tokyo, Japan. 8:10 Quantitative Multicompound Analysis by NMR. Gary D. Haines, Charles F. Hammer, FDA Institute for Advanced Analytical Chemistry, Georgetown University, Washington, D. C. 20007. 8:30 NMR Spectral Correlations for a Series of Coumestans. Robert E. Lundin, Roland R. Spencer, Emanuel M. Bickoff, Western Utilization Research and Development Di­ vision, ARS, U. S. Dept. of Agriculture, 800 Buchanan St., Albany, Calif. 8:50 A Permanent Magnet, Proton-Locked All Nuclei High Resolution NMR Spectrometer. Yoshiharu Utsumi (Naka Works, Hitachi Ltd., Department of Electron Institute, Katsuta, Ibaraki, Japan); Paul A. Strauss, Perkin-Elmer Corp., Norwalk, Conn. 06852. 9:05 Heteronuclear Decoupling: 1 3 0-Ή and "'Ρ-^Η. Yoshi­ haru Utsumi (Naka Works, Hitachi Ltd., Department of Elec­ tron Institute, Katsuta, Ibaraki, Japan); Harry Agahigian, Perkin-Elmer Corp., Norwalk, Conn. 06852. 9:20 NMR Signal Enhancement Technique Used in Analy­ sis of Minor Constituents in Polymers. Hung Yu Chen, J. E. Field, Goodyear Tire and Rubber Co., Akron, Ohio 44316. TUESDAY, MARCH 7 GAS CHROMATOGRAPHY—DETECTORS AND INSTRUMENTS Tuesday M o r n i n g — U r b a n Room

Monday Evening—Terrace Room

Arthur Karmen,

N o r m a n C. L i , P r e s i d i n g

7:30 Solvent Effects on the NMR Spectra of Pyridines. Anomaly in the Differential Chemical Shift of the Alpha

Presiding

8:30 Oven Designs for Gas Chromatography: A Realistic Approach. M. W. Redmond, R. D. Condon, Perkin-Elmer Corp., Norwalk, Conn. 06852.

THE N.I.L. MILLIVOLT METER —FOR MEASURING SMALL POTENTIAL DIFFERENCES OF VERY HIGH INTERNAL RESISTANCE SOURCES . . . An unsurpassed instrument, superior to any available expanded scale pH meter, for measuring small differences of ion or anion concentration sensed by specific electrodes, such as Pungor, Beckman, Orion, Corning, etc.

• MILLIVOLT RANGES: Full scales of 10, 25, 100, 250, and 1,000 mv. • INPUT: Will accept positive or negative voltage. • INPUT IMPEDANCE: 101- ohms (presents no load to the electrode). • BUCKING VOLTAGE: A choice of positive or negative bucking voltage continuously adjustable from 0-1,000 mv, accurate to 0.25%. • RECORDER OUTPUT: For any ordinary millivolt strip chart recorder. Readings are unaffected by recorder and recorder ranges are pre-set on the Millivoltmeter. Bulletin *

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