Hafner

Hafner S, Demco D E and Kimmich R 1996 Magic echoes and NMR imaging of solids Solid State Nucl. Magn. Reson. 6 275-93... 

Dai H, Hafner J H, Rinzier A G, Colbert D T and Smalley R E 1996 Nanotubes as nanoprobes in soanning probe miorosoopy Nature 384 147... 

The Kekule quotes are taken from the biographical article of K Hafner published n Angew Chem Internat ed Engl 18 641-651 (1979)... 

O. L. Davies and co-workers. The Design andAna/ysis of Industria/Experiments, 2nd ed., Hafner, New York, 1956 reprinted by Longman, New York, 1987. This book, which is a sequel to the authors basic text Statistica/Methods in Eesearch and Production, is directed at industrial situations and chemical appHcations. Three chapters are devoted to factorial experiments and one chapter to fractional factorial plans. A lengthy chapter (84 pp.) discusses the deterrnination of optimum conditions and response surface designs, which are associated with the name of G. Box, one of the seven co-authors. Theoretical material is presented in chapter appendices. 

R. Gunther, The Greek Herbal ofDioscorides, Hafner, New York, 1959, p. 42. 

J. Hafner. From Hamiltonians to Phase Diagrams. Springer-Verlag, Berlin (1987). 

Submitted by Klaus Hafner and Klaus-Peter Melnhardt. ... 

Hafner, K. E., Torsional Stresses of Shafts Caused by Reciprocating Engines Running through Resonance Speeds, ASME 74-DGPl, New York American Society of Mechanical Engineers, 1974. 

Klaus Hafner Charles W. Rees Barry M. Trost... 

Because all the variables that influence the properties of the final product are known, one can use a statistical design (known as a one-half factorial) to optimize the properties of the GPC/SEC gels. Factorial experiments are described in detail by Hafner (10). For example, four variables at two levels can be examined in eight observations. From these observations the significance of each variable as related to the performance of the gel can be determined. An example of a one-half factorial experiment applied to the production of GPC/SEC gel is set up in Table 5.2. The four variables are the type of DVB, amount of dodecane, type of methocel, and rate of stirring. 

During the 1950s and 1960s Hafner used Konig salts, derived from the reaction of A -methyl aniline with Zincke salt 1, for azulene synthesis. The Zincke reaction also achieved prominence in cyanine dye synthesis and as an analytical method for nicotinamide determination. ... 

Recent important developments consist in the synthesis of the unsubstituted pyrylium cation by Klagcs and Trager, the preparation of pyrylocyanines by Wizinger, the development of simple syntheses for alkyl-substituted pyrylium salts by Balaban and Nenitzescu, Praill, Schroth and Fischer, Schmidt, and Dorofeenko, the discovery of a variety of reactions by Dimroth and Hafner, and the study of physical properties by Balaban. 

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