June 12, 1855

Cover vol. 12, no.3, June 2015

Matt Donner 12 June 2011

This paper is an inquiry into the largely unexamined analysis of arguments by analogy (ABA). By exposing the degree of philosophical complexity, which ultimately renders evaluation of ABA subjective, we shall see that the most appropriate doxastic attitude to adopt, with respect to the conclusions drawn from these arguments, is often suspension of judgment. A critical examination of Copi’s crit...

Persian-translation vol. 12, no.3, June 2015

1855 On

Wallace, A. R. 1855. On the law which has regulated the introduction of new species.

C1ob06688a 1847..1855 ++

The free energies of activation for the aryl–aryl rotation of 17 biphenyl derivatives, bearing a heavy heteroatom (S, Se, Te, P, Si, Sn) as ortho substituent, have been measured by variable temperature NMR. These numbers, so called B values, represent a meaningful measure of the steric hindrance exerted by the selected substituents. DFT computations match quite satisfactorily the experimental b...