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Skip to main content Skip to table of contents. Advertisement Hide. Authors S. Sharma S. Cohen A. Conjugation Jr. Riley R. Alquist J. McFarland H. Uehleke O. Wintersteiner A. Burger E. Front Matter Pages Ayurvedic Medicine — Past and Present. Pages The Psychotomimetic Agents. Konjugieren M.

Karow Jr. Riley, R. On the Understanding of Drug Potency. Cyclopropane Compounds of Biological Interest. Drug Action and Assay prendre Microbial Kinetics. Back Matter Pages Christian settling emotional boundaries in dating this book Introduction Twelve years have elapsed since the appearance of the first volume and it is with great pleasure that the Editor is now able to present volume During these twelve years various fields of drug research have undergone important, partly revolutionary, changes.

The Editor is particularly grateful for the opportunity of transmitting to those connected with the development of drugs the extensive knowledge of the Authors, who, without exception, are themselves actively engaged in research. Drug research is currently in a state of transformation: reconsideration in the light of the past and reorientation with a view to the future. To a large extent this is due to the tumultuous developments in the last 20 years, developments which are unparalleled in the history of medicine and the consequences of which cannot yet be completely evaluated.

Unfortunately, however, the current situation is not devoid of its unpleasant and even tragic aspects, aspects which fall outside the research worker's sphere or influence. Those connected with drug research, be they in industry, in universities or in clinics, are aware of these problems, and, as a result of this awareness, are all the more in need of an aid which will assist them in ascertaining the current position and in fixing future goals. Arzneimittel Arzneimittelforschung Evolution drug drug discovery drug research research.

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Table of contents

Skip to main content Skip to table of contents. Advertisement Hide. Authors S. Sharma S. Cohen A. Karrow Jr. Riley R. Alquist J. McFarland H. Uehleke O. Wintersteiner A. Burger E. Front Matter Pages

About this book

Historical interest and studies of Weyl's role in the interplay between 20th-century mathematics, physics and philosophy have been increasing since the middle s, triggered by different activities at the occasion of the centenary of his birth in , and are far from being exhausted. The contributions in the first part of this volume discuss Weyl's deep involvement in relativity, cosmology and matter theories between the classical unified field theories and quantum physics from the perspective of a creative mind struggling against theories of nature restricted by the view of classical determinism. In the second part of this volume, a broad and detailed introduction is given to Weyl's work in the mathematical sciences in general and in philosophy. It covers the whole range of Weyl's mathematical and physical interests: real analysis, complex function theory and Riemann surfaces, elementary ergodic theory, foundations of mathematics, differential geometry, general relativity, Lie groups, quantum mechanics, and number theory. Skip to main content Skip to table of contents.

About this book

Starting in the mid 50s, a date code was stamped on the bottom of every Zippo lighter made. The original purpose was for quality control. The date code has since become an invaluable tool for Zippo collectors. Most lighters fabricated between 1933 and 1957 can be identified by style and model and the patent or patent-pending marks. Get complete data codes here for different types of Zippo Lighters- Date Codes | Zippo.

The marking on your zippo help you identify that how old is your lighter. Since the 1950s, those markings provide a way to accurately date most Zippo lighters.

From 1957-1965 the code configuration on the slim lighters differed from the regular lighters (See Date Code Chart below). From 1966 on, the configuration has been the same. Bottom Stamp: The appearance of the word "Zippo" in the bottom stamp provides another clue to dating. There have been three major changes, as shown in inset.

From 1933 to the mid 50s the word Zippo was stamped in block letters. The Zippo script logo was developed in the late 40s and was phased-in on the lighter bottom stamp around 1955.