Hess – författare

Heavy atoms and their compounds are important in many areas ofmodern technology. Their versatility in the reactions they undergois the reason that they can be found in most homogeneous andheterogeneous catalysts. Their magnetism is the decisive propertythat qualifies them as materials for modern storage devices.The phenomena observed in compounds of heavy atoms such asphosphorescence, magnetism or the tendency for high valency inchemical reactions can to a large extent be traced back torelativistic effects in their electronic structure. Thus, in manyaspects relativistic effects dominate the physics and chemistry ofheavy atoms and their compounds. Chemists are usually aware of these phenomena, however, the theorybehind them is not part of the standard chemistry curriculum andthus not widely known among experimentalists. Whilst therelativistic quantum theory of electronic structure is wellestablished in physics, applications of the theory to chemicalsystems and materials have been feasible only in the last decadeand their practical applications in connection with chemicalexperiment is somewhat out of sight of modern theoretical physics. Relativistic Effects in Heavy Element Chemistry and Physicsintends to bridge the gap between chemistry and physics on the onehand and between theory and experiment on the other. Topics covered include: A broad range from quantum electrodynamics to the phenomenology ofthe compounds of heavy and superheavy elementsA state-of-the-art survey of the most important theoreticaldevelopments and applications in the field of relativistic effectsin heavy-element chemistry and physics in the last decadeSpecial emphasis on the work of researchers in Europe and Germanyin the framework of research programmes of the European ScienceFoundation and the German Science Foundation

In 1984 the Getty Museum acquired a collection of Italian Renaissance majolica, or tin-glazed earthenware. This volume catalogues this collection of 45 objects spanning 400 years, including a pair of 18th-century candlesticks representing mythological scenes and a tabletop with hunting scenes.

Engineering registration is accelerating at a pace unequalled since institution of registration laws in the 1920s and 1930s. This phenomenon is not due to an easing of entrance require­ ments, since only vestiges of "grand fathering" and eminence exist in most states. Nor is it due to a lessening in the difficulty of the registration examinations. In fact, it is generally agreed that the Engineering Fundamentals Examination has significantly increased in difficulty over the last fifteen years. Why then the increased interest in registration among practicing engineers? Historically the professional engineer has been in private practice offering consulting services directly to the public. Registration laws were passed to protect the public from incompetent, untrained practioners in any engineering area. However, the registration laws go beyond estab­ lishing an individual''s credentials. One reason for the new interest in engineering registration is the proliferation of new activity areas such as pollution control and energy conservation where the public is keenly aware of and insistent upon quality technological inputs.

Engineering registration is accelerating at a pace unequalled since institution of registration laws in the 1920s and 1930s. This phenomenon is not due to an easing of entrance require­ ments, since only vestiges of "grand fathering" and eminence exist in most states. Nor is it due to a lessening in the difficulty of the registration examinations. In fact, it is generally agreed that the Engineering Fundamentals Examination has significantly increased in difficulty over the last fifteen years. Why then the increased interest in registration among practicing engineers? Historically the professional engineer has been in private practice offering consulting services directly to the public. Registration laws were passed to protect the public from incompetent, untrained practioners in any engineering area. However, the registration laws go beyond estab­ lishing an individual's credentials. One reason for the new interest in engineering registration is the proliferation of new activity areas such as pollution control and energy conservation where the public is keenly aware of and insistent upon quality technological inputs.

Die Schul-und Exkursionsflora für die Schweiz von BINZ (12. Auflage 1966, bearbeitet von BECHE­ RER) ist in erster Linie als Taschenflora für Exkursionen und für den Unterricht gedacht und be­ schränkt sich deshalb auf Bestimmungsschlüssel und knappe morphologische Beschreibungen. Herr Dr. WALO KocH, Professor für systematische Botanik und Pflanzensoziologie an der Eid­ genössischen Technischen Hochschule (ETH) in Zürich, beabsichtigte deshalb schon vor vielen Jahren, eine neue Flora der Schweiz herauszugeben. Er war der beste Kenner unserer Flora; auf vielen unvergeßlichen Exkursionen hat er uns in die Vielfalt und die Probleme unserer Pflanzen­ welt eingeführt. Als Vorarbeit zu seinem geplanten Werk sammelte er auf seinen Exkursionen zielstrebig umfangreiChes Herbarmaterial, das er auch mit großer Sorgfalt präparierte. Ein früher Tod im Sommer 1956 verhinderte Prof. KocH, sein umfangreiches Wissen der Nachwelt zu ver­ mitteln; aus seinem Nachlaß kamen sein Herbar und seine 118 Feldbücher mit den Fundorts­ und Standortsangaben der gesammelten Pflanzen zu uns an die ETH. Auf Anregung von Herrn Prof. Dr. ERNST GÄUMANN, Vorsteher des Instituts für spezielle Botanik an der ETH, haben wir den Plan einerneuen Flora der Schweiz wieder aufgegriffen und 1957 mit der Arbeit begonnen. Wir danken Herrn Prof. GÄUMANN für seine Unters''tützung und die guten Arbeitsmöglichkeiten; damit hat er wesentlich zum Gelingen des Werkes beigetragen, des­ sen Vollendung er nicht mehr erlebt hat.