Universal correlations positions

The solid curve in Fig. 2 indicates that all three data sets are represented reasonably well by a single quadratic function. We (include diat the [ oposed universal correlation between and a is rrect to first order. The positive sign of the quadratic term may serve as a detailed test trf competing models, for example, from the dependence on a of the parameters in the MacMillan formula. 

In collaboration with T. Darrah Thomas, Oregon State University, we employed gas-phase electron spectroscopy for chemical analysis (ESCA) to assess the nature of charge onN and O in distorted lactams [61a]. An earlier study ofN-ammonioimidates (solid state) found an excellent correlation between N u shifts and the carbonyl frequencies as predicted by resonance theory [62,63]. For l-azabicyclo[3.3. l]nonan-2-one (11), a low value for the ionization energy of Nu compared to the planar 1 -n-butylpyrrolidone (26) supports reduced positive charge on the nitrogen... 

Numerical studies [167] of planar (d = 2) elastic random percolation networks have shown that if their linear dimension L < 0.2c (c is the correlation length), then Poisson s ratio for the system is negative, and if L > 0.2J , Poisson s ratio is positive In this case, if L/c —> oo, the limiting value of Poisson s ratio is vp = 0.08 0.04 and is a universal constant that is, it does not depend on the relative values of the local elastic characteristics If... 

One central issue in tiibology is why static friction is so universally observed between solid objects. How does any pair of macroscopic objects, placed in contact at any position and orientation, manage to lock together in a local free energy minimum A second issue is why experimental values of Fj and tend to be closely correlated. The two reflect fundamentally different processes and their behavior is qualitatively different in many of the simple models described below. 

Bogumil Jeziorski received his M.S. degree in chemistry from the University of Warsaw in 1969. He conducted his graduate work also in Warsaw under the supervision of W. Kolos. After a postdoctoral position at the University of Utah, he was a research associate at the University of Florida and a Visiting Professor at the University of Waterloo, University of Delaware and University of Nijmegen. Since 1990 he has been a Professor of Chemistry at the University of Warsaw. His research has been mainly on the coupled-cluster theory of electronic correlation and on the perturbation theory of intermolecular forces. His other research interests include chemical effects in nuclear beta decay, theory of muonic molecules and relativistic and radiative effects in molecules. 

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