Evans, Richard

Robley D. Evans Richard F. Foster Hymer L. Friedell R.J. Michael Fry Robert O. Gohson John W. Healy Paul C. Hodges Wilfrid B, Mann A. Alan Moghissi Karl Z. Morgan Robert J. Nelsen Wesley L. Nyborg Chester R. Richmond... 

Victor R Bond Reynold F. Brown Austin M. Brues George W. Casarett Frederick P. Cowan James F. Crow Merrill Eisenbud Robley D. Evans Richard F. Foster... 

David J. Evans, Richard A. Henderson, and Barry E. Smith... 

Evans, Richard J. 1988. Epidemics and Revolutions Cholera in Nineteenth-Century Europe. Past and Present 120 123-146. 

Cari William, A History of Germany, 181 -1990, 4th edition (London, 1991) Evans, Richard J., Rethinking German History (London, 1987)... 

Two pieces of direct evidence support the manifestly plausible view that these polymerizations are propagated through the action of car-bonium ion centers. Eley and Richards have shown that triphenyl-methyl chloride is a catalyst for the polymerization of vinyl ethers in m-cresol, in which the catalyst ionizes to yield the triphenylcarbonium ion (C6H5)3C+. Secondly, A. G. Evans and Hamann showed that l,l -diphenylethylene develops an absorption band at 4340 A in the presence of boron trifluoride (and adventitious moisture) or of stannic chloride and hydrogen chloride. This band is characteristic of both the triphenylcarbonium ion and the diphenylmethylcarbonium ion. While similar observations on polymerizable monomers are precluded by intervention of polymerization before a sufficient concentration may be reached, similar ions should certainly be expected to form under the same conditions in styrene, and in certain other monomers also. In analogy with free radical polymerizations, the essential chain-propagating step may therefore be assumed to consist in the addition of monomer to a carbonium ion... 

Cayce, Edgar Evans, Gail Cayce Schwartzer, and Douglas G. Richards. 1988. Mysteries of Atlantis Revisited. San Francisco Harper and Row. 

R7. Richards, J. B., Evans, P. J., and Hemming, F. W., Dolichol phosphates as acceptors of mannose from guanosine diphosphate mannose in liver systems. Biochem. J. 124, 957-959 (1971). 

One month later, in mid-August, the Harvard botanist Richard Evans Schultes, also in Huautla,... 

Past experience has shown that for a divinatory plant to enlist the attention of the outside world two steps are usually necessary. First, it should be correctly and securely identified. Second, its chemistry should be convincingly worked out. Richard Evans Schultes settled the identity of ololiuhqui in the definitive paper published in 1941. OH It is the seed of a species of Convolvulaccne Rivea corymbosa (L.) Hall. hi. 

Schultes, Richard Evans, and Hofmann, Albert. Plants of the Gods. Rochester, VT Healing Arts Press, 1992. 

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