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Isaac Asimov: The Foundations of Science Fiction - download pdf or read online

By James Gunn

ISBN-10: 0810854201

ISBN-13: 9780810854208

Updates and expands technological know-how fiction student James Gunn's definitive, Hugo Award-winning serious quantity approximately Isaac Asimov and his contributions to the technological know-how fiction style.

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Brandup, and E. H. Immergut, Polymer Handbook, Interscience (1967). (15) W. M. Kays, Convective Heat and Mass Transfer, McGraw Hill, p 63 (1966). (16) H. J. Bixler, R_ W. Hausslein, and L. Nelson, "Separation and Purification of Biological Materials by UltrafIltration", presented at the 65th National Meeting of the American Institute of Chemical Engineers, Cleveland, Ohio (May 4 - 7, 1969). (17) R. L. Goldsmith, "Macromolecular UltrafIltration with Microporous Membranes", presented at the 158th National ACS Meeting, New York (Sept.

Hopfenberg,J. Appl. Poly. , 12,991 (l968). (14) H. B. Hopfenberg, R. H. Holley, V. Stannett, Polymer Engineering and Science, 9,242 (1969). (15) T. W. Kwei and H. M. Zupko, J. Polymer Sci. (In press). (16) H. L. Frisch, T. T. Wang, and T. K. Kwei, J. Polymer Sci. (In press). (17) G. A. Bernier and R. P. Kambour, Macromolecules, 1,393 (1968). (18) J. F. Rudd,J. , Bl, 1 (1963). (19) R. J. Cresa, "Block and Graft Copolymers", p. 97, Butterworths, London (1962). (20) H. B. D. , Dept. of Chemical Engineering, Cambridge, Mass.

Polymer molecular weight and polymer orientation affect the rates of relaxation{l8,23). The objective of this study, therefore, was to determine the effect of molecular weight and subtle changes in orientation on the rate of solvent crazing of polystyrene by normal pentane. In 1963 Rudd(18) measured the rate of relaxation of polystyrene samples of molecular weight 100,000 to 300,000 exposed to butanol at unit activity under an initial stress of 1000 psi. Relaxation rates dropped by a factor of 106 with increasing molecular weight over this rather narrow range of molecular weights which was related to greater hindrance to chain uncoiling and viscous flow in the higher molecular weight samples.

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Isaac Asimov: The Foundations of Science Fiction by James Gunn


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