A collection of papers on statistical mechanics which elucidate Bogolubov's microscopic theory of superfluidity and reflect his contribution to the explanation of superconductivity. This book also shows the inception of the concept of quasi-averages, containing the idea of spontaneous symmetry breaking, which was to have a significant influence in elementary particle physics and quantum field theory. This volume offers insight into the fundamental concepts that underpin aspects of modern physics, from the theory of electromagnetic and weak interactions to phase transitions. It is directed at undergraduates exploring statistical mechanics and at graduates and researchers developing Bogolubov's fundamental results.
During the past decade there have been many changes in the perfumery industry which are not so much due to the discovery and application of new raw materials, but rather to the astronomic increase in the cost of labour required to produce them. This is reflected more particularly in the flower industry, where the cost of collecting the blossoms delivered to the factories has gone up year after year, so much so that most flowers with the possible exception of Mimosa, have reached a cost price which has compelled the perfumer to either reduce his purchases of absolutes and concretes, or alternatively to substitute them from a cheaper source, or even to discontinue their use. This development raises an important and almost insoluble problem for the perfumer, who is faced with the necessity of trying to keep unchanged the bouquet of his fragrances, and moreover, to ensure no loss of strength and diffusiveness. Of course, this problem applies more especially to the adjustment of formulae for established perfumes, because in every new creation the present high cost of raw materials receives imperative con- sideration before the formula is approved.
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