Laurence

Ha T, Laurence T A, Chemla D S and Weiss S 1999 Polarization spectroscopy of single fluorescent molecules J. Chem. Phys. B 103 6839-50... 

P. K. PaU, Art Objects. Their Care and Preservation, Laurence McGUvery, La JoUa, Calif., 1973. 

Laurence A. Jackman Carlos N. Ruiz Teledyne Allvac... 

Proeess Safety Stanley M. Englund, Frank T. Bodurtha, Laurence G. Britton,... 

Laurence G. Britton, Ph.D., Research Scientist, Union Carbide Corporation (Section 26, Process Safety)... 

FIG. 23-23 Batch and continuous polymerizations, (a) Polyethylene in a tiihiilar flow reactor, up to 2 km long hy 6,4 cm ID, (h) Batch process for polystyrene, (c) Batch-continuous process for polystyrene, (d) Suspension (head) process for polyvinylchloride, (e) Emulsion process for polyvinylchloride, (Ray and Laurence, in Lapidus and Amundson, eds, Chemical Reactor Theory Review, Frentice-Hall, 1977. )... 

Sponsor/Developing Organization LLNL. Developer. Laurence E. Fried LLNL, P.O. Box 808 Livermore, CA 94551, E-mail cheetah llnl.gov. Hardware-. IBM-PC or clone, Windows 3.1, Windows 95, Mac OS 7.x or later, SUN and SGI workstations, 4.3 MB of hard disk. Software ANSI C. Run execution time for typical problem (CPU or real time). Standard run About 30 seconds on a Power Macintosh 6100/80. Cost None from LLNL. Source code is available, with the stipulations that all modifications be preapproved and forwarded to the sponsor for tracking... 

Laurence, L. L., Foaming Crudes Require Special Separation Techniques, World Oil, Nov. 1981, p. 103. 

The Acetate Ion. For the B-coefficients of lithium acetate and potassium acetate, which are of course completely dissociated in aqueous solution, Cox and Wolfenden obtained at 25°C the values +0.397 and +0.238. These large values could be due entirely to the large size of the molecular ion or could be due partly to the fact that the anion produces order in its co-sphere. To test this, Laurence and Wolfenden measured the B-coefficient of acetic acid in aqueous solution at 25°C. 

I acknowledge many scholars of the periodic table from diverse fields, including Peter Atkins, Henry Bent, Bernadette Bensaude, Nathan Brooks, Edwin Constable, John Emsley, Michael Gordin, Ray Hefferlin, William Jensen, Herbert Kaesz, Masanori Kaji, Maurice Kibler, Bruce King, Mike Laing, Laurence Lavelle, Guillermo Restrepo, Dennis Rouvray, Oliver Sacks, Eugen Schwarz, Philip Stewart, Mark Winters and many others. 

Laurence DJR (1972) in Carroll B (ed) Physical Methods in Macromolecular Chemistry, M Dekker, New York (Vol 2)... 

Student Study Guide and Solutions Manual, John Krenos and Joseph Potenza, Rutgers University Laurence Lavelle, UCLA Yinfa Ma, University of Missouri,... 

The inlet monomer concentration was varied sinusoidally to determine the effect of these changes on Dp, the time-averaged polydispersity, when compared with the steady-state case. For the unsteady state CSTR, the pseudo steady-state assumption for active centres was used to simplify computations. In both of the mechanisms considered, D increases with respect to the steady-state value (for constant conversion and number average chain length y ) as the frequency of the oscillation in the monomer feed concentration is decreased. The maximum deviation in D thus occurs as lo 0. However, it was predicted that the value of D could only be increased by 10-325S with respect to the steady state depending on reaction mechanism and the amplitude of the oscillating feed. Laurence and Vasudevan (12) considered a reaction with combination termination and no chain transfer. 

One of the few attempts to examine a polymerization reactor in periodic operation experimentally is the work of Spitz, Laurence and Chappelear (X6)who reported the influence of periodicity in the initiator feed to the bulk polymerization of styrene in a CSTR. To induce periodicity the initiator feed was pulsed on-and-off and the reactor output compared with steady-state operation with the same time-averaged initiator input. 

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