The chapters contained in this two-volume set provide a broad perspective on the novel strategies and conceptual paradigms that drive the current resurgence of interest in somitogenesis - the process by which somites form and elaborate differentiated tissues and structures. Because somites are a ubiquitous feature of vertebrate embryos, they can be studied in a variety of experimental animal models including those amenable to genetic (zebrafish, mammalian), molecular/genetic (mammalian, avian) as well as those already well established for classical experimental embryological and cell biological studies (amphibians, avian). The wide variety of experimental approaches to somitogenesis that are presented in these volumes will leave the reader with a broad perspective on how current research in somitogenesis is helping to solve fundamental questions in vertebrate development and morphogenesis.
Key Features
* Novel transcriptional mechanisms that control repetitive pattern formation
* Wide-scale genetic screens for mutations affecting somitogenesis
* Molecular/genetic control of pattern and tissue formation during somitogenesis
* Transplantation of mouse embryo somites
* Classical embryological approaches and concepts
* Evolutionary perspectives on somitogenesis

Current Topics in Developmental Biology provides a comprehensive survey of the major topics in the field of developmental biology. The volumes are valuable to researchers in animal and plant development, as well as to students and professionals who want an introduction to cellular and molecular mechanisms of development. The series has recently passed its 30-year mark, making it the longest-running forum for contemporary issues in developmental biology.

OPENING ADDRESS XI LIST OF PARTICIPANTS XV SESSION 1 THE ATMOSPHERE AND IONOSPHERE BELOW 150 km L. Thomas SOME OUTSTANDING PROBLEMS IN THE NEUTRAL AND IONIZED ATMOSPHERE BETWEEN 60 AND 150 km ALTITUDE 3 Peter M. Banks HIGH-LATITUDE IONOSPHERE-ATMOSPHERE INTERACTIONS (Abstract) 19 V. Domingo SOLAR RADIATION VARIATION AND CLIMATE 21 R. Bernard MAREES ET ONDES PLANETAIRES DANS LA BASSE THERMOSPHERE ET LA HAUTE MESOSPHERE 43 Michel Blanc and Paul Amayenc CONTRIBUTION OF INCOHERENT SCATTER RADARS TO THE STUDY OF MIDDLE AND LOW LATITUDE IONOSPHERIC ELECTRIC FIELDS 61 SESSION 2 THE OZONOSPHERE T. M. Donahue BASIC PROCESSES IN THE STRATOSPHERE AND THE MESOSPHERE (Abstract) 93 VI TABLE OF CONTENTS Ivar S. A. Isaksen CHEMICAL MODELS OF THE NEUTRAL ATMOSPHERE 95 M. Ackerman MEASUREMENTS OF MINOR CONSTITUENTS IN THE STRATOSPHERE 107 A. Vidal-Madjar, R. G. Roble, W. G. !iankin,G. Artzner, R. M. Bonnet, P. Lemaire, and J. C. Vial HIGH-RESOLUTION ATMOSPHERIC EXTINCTION MEASUREMENTS FROM THE FRENCH EXPERIMENT ON BOARD THE NASA SPACECRAFT OSO-8 117 M. Anderegg, J. E. Beckman, A. F. M. Moorwood, H. H. Hippelein, J. P. Baluteau, E. Bussoletti, A. Marten, and N. Coron HIGH-R~rOLUTION ATMQrPHERIC EMISSION SPECTROSCOPY AT 120 cm AND 535 cm WITH A RAPID-SCAN INTERFEROMETER AND 91 cm AIRBORNE TELESCOPE 129 Erwin Schanda, Joachim Fulde, and Klaus Kunzi MICROWAVE LIMB SOUNDING OF STRATOSPHERE AND MESOSPHERE 135 SESSION 3 METEOROLOGY IN THE IONOSPHERE AND STRATOSPHERE Hans-Jurgen Bolle CRITICAL CLIMATE PARAMETERS AND THEIR MONITORING FROM SPACE 149 R. J. Murgatroyd, A. O'Neill, and S. A.

The main theme of this anthology is the unique interaction between mathematics, physics and philosophy during the beginning of the 20th century. In this book, ten renowned philosopher-historians probe insightfully into key conceptual questions of pre-quantum mathematical physics. The result is a diverse yet thematically focused compilation of first class papers on mathematics, physics and philosophy, and a source-book on the interaction between them.

The editors present, in a single volume, a valuable reference source for students of mammalian embryology, genetics, and physiology, this book provides a thorough overview of the field of embryonic development - its current status along with possible directions in the future.

The Pathways series assists students in achieving the National Certificate (Vocational) qualification. Pathways not only equips students with the required knowledge, understanding and practical skills, but also empowers them to apply this learning with confidence in the classroom and ultimately in the workplace. Each Pathways Student Book is clearly structured and easy to use. Each topic covers every Subject Outcome, Learning Outcome and Assessment Standard. Accessible, easy-to-understand language makes learning easy. Concepts are clearly defined. A glossary at the beginning of each topic clearly explains important words and terminology. Informative artwork supports the text. This Student Book is accompanied by a Lecturer’s Guide.