Taschenatlas

THOMMEN

Birkhäuser Boston

Kantons Bern III

HOFER

Progress In Drug Research

JUCKER

Science & Math

Serotonin: Molecular Biology, Receptors and Functional Effects

John R. Fozard

Biological Sciences

Atherosclerosis Research Group, Vienna, Austria. Agents and Actions Supplements, Volume 37. Proceedings of the 5th International Symposium on Prostaglandins in the Cardiovascular System, September 22-26, 1991, Vienna, Austria.

Prostaglandins In The Cardiovascular System (Agents and Actions Supplements)

SINZINGER, H.F., ED.

Medical Books

It is generally accepted that all living organisms present on earth derive from one single primordial cell born several billion years ago. One important step in the evolution occurred some 1. 5 billion years ago with the transition from small procaryote cells with relatively simple internal structures such as bacteria to larger and more compleX: eucaryotic cells such as those found in higher animals and plants. Large membrane proteins which enable the cells to communicate appeared early in evolution, and it is believed that the nerve membrane receptors and ionic channels which are observed today in both invertebrate and vertebrate species derive from a common ancestor. Basically, the three identified superfamilies, 1) ionotropic receptors (i. e. receptors containing an integral ionic channel), 2) metabotropic receptors (receptors coupled to G proteins) and 3) voltage-dependent ionic channels (Na+, K + and Ca2+ channels) were already well differentiated when vertebrates separated from invertebrate species. The large number of subtypes which are observed in each superfamily may be of more recent evolutionary origin. To understand how this happened, the best approach was to compare the sequences and the properties of the receptors and ionic channels in species sufficiently distant in the evolutionary tree. In the present volume, many of the best specialists in the field of comparative molecular neurobiology, several of them working on vertebrate and invertebrate species, have accepted to report their most recent findings.

Comparative Molecular Neurobiology (EXPERIENTIA SUPPLEMENTUM (EXS))

PICHON, YVES, ED.

DNA Fingerprinting: State of the Science (Exs, No 67)

Book by Cordulack, Shelley Wood, Pena, Pena, S.

Dna Fingerprinting: STATE OF THE SCIENCE (EXPERIENTIA SUPPLEMENTUM (EXS))

PENA, S.

Evolution

Combinatorial group theory is a loosely defined subject, with close connections to topology and logic. With surprising frequency, problems in a wide variety of disciplines, including differential equations, automorphic functions and geometry, have been distilled into explicit questions about groups, typically of the following kind: Are the groups in a given class finite (e.g., the Burnside problem)? Finitely generated? Finitely presented? What are the conjugates of a given element in a given group? What are the subgroups of that group? Is there an algorithm for deciding for every pair of groups in a given class whether they are isomorphic or not? The objective of combinatorial group theory is the systematic development of algebraic techniques to settle such questions. In view of the scope of the subject and the extraordinary variety of groups involved, it is not surprising that no really general theory exists. These notes, bridging the very beginning of the theory to new results and developments, are devoted to a number of topics in combinatorial group theory and serve as an introduction to the subject on the graduate level.

Topics in Combinatorial Group Theory (Lectures in Mathematics)

Baumslag, Gilbert

Mathematics

<p>This book is devoted to one of the central problems of contemporary thinking, for which c.P. Snow in 1959 coined the phrase of the «Two Cultures». In this concept, human endeavour is directed on one side to the (forward-looking) sci ences (mathematics, physics, chemistry, biology, etc.) and on the other side to the (backward-looking) humanities (including psychology, linguistics, sociology, etc.). In this dichotomy Snow saw no possibility of unification. On the other hand the urge towards self-consistency and harmony in the mental and spiritual lives of both man and society as a whole is clearly one of the major forces of creativity, both scientific and artistic. This force aims at the unification of the «Two Cultures» in order to build an integrated self-consistent system for our intellectual life. Some attempts in this direction have been made before, and will be described in this book. It is our aim to contribute to the achievement of an integrated mental life on the basis of information theory. In order to construct our model, we examine the laws of information theory, leading us to the deduction of the main laws inherent in both «cultures». Thus, we consider the evolution of both non-living and living matter, human behaviour, the phenomenon of language, the sphere of aesthetics, etc. We hope that our work will be useful both for researchers (who are trying to derive different integral theories) and for various other «consumers» of scientific knowledge (meaning broad circles of intellectuals).</p>

Information And Creation: INTEGRATING THE "TWO CULTURES"

Health, Fitness & Dieting

GOLITSYN, A.

Psychology & Counseling

In the last 25 years, we have witnessed a revolution in the way that ecologists and evolutionary biologists approach their disciplines. This revolution has been fueled by the ability to dissect the genetic and molecular basis of variation that is partly the currency of these disci- plines. Using modern molecular techniques, we have begun to restruc- ture the spectrum of questions that can be addressed in studying the mechanisms and consequences of the ecology and evolution of living organisms. The molecular revolution has co me in waves, so to speak, with three particularly important developments. The first concerns the establish- ment and widespread use of pro tein analysis. Microcomplement fixation and isozyme e1ectrophoresis were the techniques around which much of the genetic work in ecology and evolution were once based. The next wave started with the development of recombinant DNA technology and centered around the use of restriction fragment length polymor- phisms (RFLPs) and sequencing of DNAs cloned in bacteria. This technology was the first to actually examine and accumulate genetic information at the nucleotide level. The most recent wave of technology that we are currently experiencing is based on our ability to amplify DNA sequences enzymatically via the Polymerase Chain Reaction (PCR). Several techniques re1ated to PCR have been developed and used extensively in ecological and evolutionary studies.

Molecular Ecology And Evolution: APPROACHES AND APPLICATIONS (EXPERIENTIA SUPPLEMENTUM (EXS))

SCHIERWATER, BREND

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