Theory Of Valency In Progress

This volume presents the fundamentals of graph theory and then goes on to discuss specific chemical applications. Chapter 1 provides a historical setting for the current upsurge of interest in chemical graph theory. Chapter 2 gives a full background of the basic ideas and mathematical formalism of graph theory and includes such chemically relevant notions as connectedness, graph matrix representations, metric properties, symmetry and operations on graphs. This is followed by a discussion on chemical nomenclature and the trends in its rationalization by using graph theory, which has important implications for the storage and retrieval of chemical information. This volume also contains a detailed discussion of the relevance of graph-theoretical polynomials; it describes methodologies for the enumeration of isomers, incorporating the classical Polya method, as well as more recent approaches.

Divided into five major parts, the two volumes of this ready reference cover the tailoring of theoretical methods for biochemical computations, as well as the many kinds of biomolecules, reaction and transition state elucidation, conformational flexibility determination, and drug design. Throughout, the chapters gradually build up from introductory level to comprehensive reviews of the latest research, and include all important compound classes, such as DNA, RNA, enzymes, vitamins, and heterocyclic compounds. The result is in-depth and vital knowledge for both readers already working in the field as well as those entering it. Includes contributions by Prof. Ada Yonath (Nobel Prize in Chemistry 2009) and Prof. Jerome Karle (Nobel Prize in Chemistry 1985).

Linus Pauling wrote a stellar series of over 800 scientific papers spanning an amazing range of fields, some of which he himself initiated. This book is a selection of the most important of his writings in the fields of quantum mechanics, chemical bonding (covalent, ionic, metallic, and hydrogen bonding), molecular rotation and entropy, protein structure, hemoglobin, molecular disease, molecular evolution, the antibody mechanism, the molecular basis of anesthesia, orthomolecular medicine, radiation chemistry?biology, and nuclear structure. Through these papers the reader gets a fresh, unfiltered view of the genius of Pauling's many contributions to chemistry, chemical physics, molecular biology, and molecular medicine.

Linus Pauling wrote a stellar series of over 800 scientific papers spanning an amazing range of fields, some of which he himself initiated. This book is a selection of the most important of his writings in the fields of quantum mechanics, chemical bonding (covalent, ionic, metallic, and hydrogen bonding), molecular rotation and entropy, protein structure, hemoglobin, molecular disease, molecular evolution, the antibody mechanism, the molecular basis of anesthesia, orthomolecular medicine, radiation chemistry/biology, and nuclear structure. Through these papers the reader gets a fresh, unfiltered view of the genius of Pauling's many contributions to chemistry, chemical physics, molecular biology, and molecular medicine.

Nuclear physics between 1921 and 1947 shaped more than any other science thepolitical landscape of our century and the public opinion on physical research. Using quantitative scientometric methods, a new branch in the history of science, the author focuses on the developments of nuclear physics in these formative years paying special attention to theimpact of German emigrants on the evolution of the field as a cognitive and social unity. The book is based on a thorough analysis of various citation analyses thus producing results that should be more replicable and more objective. The scientometric techniques should complement the more qualitative approach usually applied in historical writing. This makes the text an interesting study also for the historian in general.

This book contains the papers presented at the second biennial meeting of the Philosophy of Science Association, held in Boston in Fall, 1970. We have added the paper by Jaakko Hintikka which he was unable to present due to illness, and we have unfortunately not received the paper of Michael Scriven. Otherwise, these proceedings are complete so far as formal presentations. The meeting itself was dedicated to the memory of Rudolf Carnap. This great man and distinguished philosopher had died shortly before. The five talks from the session devoted to recollections of Professor Carnap are printed at the beginning of this book, and they are followed by eight other tributes and memories. We are particularly grateful to Wolfgang Stegmiiller for permitting us to include a translation of his eloge which was broadcast in Germany. The photographs were kindly contributed by Hannah Thost-Carnap. ROGER C. BUCK Department of History and Philosophy of Science, Indiana University ROBER T S. COHEN Boston Center for the Philosophy of Science, Boston University Photograph by Francis Schmidt, 1935 Photograph by Adya, 1962 TABLE OF CONTENTS PREFACE v HOMAGE TO RUDOLF CARNAP XI Herbert Feigl, Carl G. Hempel, Richard C. Jeffrey, W. V. Quine, A. Shimony, Yehoshua Bar-Hillel, Herbert G. Bohnert, Robert S. Cohen, Charles Hartshorne, David Kaplan, Charles Morris, Maria Reichenbach, Wolfgang Stegmiiller SYMPOSIUM: THEORETICAL ENTITIES IN STATISTICAL EXPLANATION JAMES G. GREENO / Theoretical Entities in Statistical Explanation 3 WESLEY C. SALMON / Explanation and Relevance: Comments on James G.