Recent scientific and industrial developments have demon- strated the major effects (advantageous or otherwise) of trace components in compounds, which in commercial products may substantially affect the properties and the course of reactions, especially catalytic ones. Some of these problems (e.g., the pur- ity of natural waters and air) have attracted the attention not only of specialists but also of society generally. It would be impossible to do research on trace components and contaminants if we did not have reliable rapid and sensitive methods of determining substances present in...

Thermodynamic methods of analysis have in recent years found ever-growing extensions in diverse regions of modern tech nology. The object of the present book is to apply these methods to the description of materials of varying physical properties. I hope the book will illustrate the wide variety and usefulness of thermodynamics which was well described by Albert Einstein: "A theory is the more impressive the greater the simplicity of its premises is, the more different kinds of things it relates, and the more extended is its area of applicability. Therefore the deep impression which classical...

This translation from Russian into English of the monograph Hematopoi- etic and Lymphoid Tissue in Culture by E. A. Luriya provides us for the first time with a comprehensive review of the massive amount of work carried out in the USSR in this important area of biological research. Historically, the pioneering tissue culture studies of Maksimov, Popov, Chasovnikov, and their colleagues working in Russia in the early part of this century provided much of the impetus for subsequent studies on lymphopoiesis and hematopoiesis in vitro and much of the basic information used subsequently to achieve...

While translating this book, I was in close communication with the author, S. S. Shvarts (Schwarz), who read and commented on the entire translated manuscript. In particular, any ambiguities as to the identity of organisms described only by common names in the original text were removed, because the author kindly supplied the Latin names in all such cases. Com- mon names are retained in the translation, but the Latin names are also added where needed. Some of the terminology used in the Russian is a transliteration from English words employed now more by European workers than Americans. I...

The main theme of this monograph - conditions of regenera- tion of organs in mammals - reflects an area of increasing empha- sis which permeates much current Soviet research on regeneration. The introduction of this theme goes back about 25 years, and empha- sis on the influence of environmental conditions upon regenerative processes has fluctuated until the mid-1960s, when the viewpoints on this subject were established in much the same form as they are expressed in this book. For years, Russian regeneration research has been charac- terized by the presence of several dominant and often...

The present stage of technological development makes new and ever more complex demands on materials that have to work under conditions of high temperature and pressure, in high vacuum, and in corrosive media. In consequence special importance is now at- tached to the refractory compounds of transition metals of groups IV to VI with such nonmetals as boron, carbon, silicon, and nitro- gen. These compounds possess high melting points, great hard- ness, and high refractory and corrosion-resisting properties. The most widely used and important compounds of this type from a technological point of...

(Written for the original Russian edition) Out of all the functional groups of protein molecules that be- long to the side chains of amino acid residues, the sulfhydryl or thiol (SH) groups of cysteine residues and the disulfide (S-S) groups of cystine have for long attracted particular attention from chemists and biochemists. This is due, on the one hand, to the high chemical reactivity of these groups, which enter into many, and often very characteristic and selective, reactions with several types of compound. On the other hand, this attention is connected with the great significance of SH...

Western knowledge of progress in biomedical research in Russia is severely limited by the scarcity of Russian journals available to us as well as the fact that few of us can read Russian. Therefore, it is of special significance that this recent contribution to the Russian scientific literature has been trans- lated into English. This publication, Thyroid Hormones, brings to us a detailed analysis of recent work in Russia, and in particular in the Laboratory of Hormone Biochemistry, Institute of Biochemistry, Academy of Science of the Uzbek SSR and the Laboratory of Pathological Physiology,...