Römpp Encyclopedia Natural Products

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Publisher :
ISBN 13 :
Total Pages : 768 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Römpp Encyclopedia Natural Products by : Günter Adam

Download or read book Römpp Encyclopedia Natural Products written by Günter Adam and published by . This book was released on 2000 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compiled by the leading German natural products chemists, this encyclopedia provides insights into the immense structural diversity of natural substances. The new, revised and expanded edition of the renowned Rmpp Lexikon Naturstoffe translated into English, it details approximately 6,000 substances that are of the greatest interest to researchers in biology, chemistry, biochemistry, pharmacology, and medicine. Highlights include: Information is presented in a user-friendly format, offering multiple entries to direct the reader to the actual article Entries contain information on chemical structure, stereochemistry, biological properties, physical properties, biological source, and medical applications Each entry comes complete with bibliographic data detailing the current literature Contains a comprehensive index of Latin species names and a list of molecular formula Written in a clear and coherent style, ROEMPP Encyclopedia Natural Products is a valuable addition to the library of newcomers to the field as well as specialists. For researchers and teachers in natural products chemistry, this is a must-have reference.

Natural Products in Medicinal Chemistry

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Publisher : John Wiley & Sons
ISBN 13 : 3527676554
Total Pages : 652 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Natural Products in Medicinal Chemistry by : Stephen Hanessian

Download or read book Natural Products in Medicinal Chemistry written by Stephen Hanessian and published by John Wiley & Sons. This book was released on 2013-12-18 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: The inspiration provided by biologically active natural products to conceive of hybrids, congeners, analogs and unnatural variants is discussed by experts in the field in 16 highly informative chapters. Using well-documented studies over the past decade, this timely monograph demonstrates the current importance and future potential of natural products as starting points for the development of new drugs with improved properties over their progenitors. The examples are chosen so as to represent a wide range of natural products with therapeutic relevance among others, as anticancer agents, antimicrobials, antifungals, antisense nucleosides, antidiabetics, and analgesics. From the content: * Part I: Natural Products as Sources of Potential Drugs and Systematic Compound Collections * Part II: From Marketed Drugs to Designed Analogs and Clinical Candidates * Part III: Natural Products as an Incentive for Enabling Technologies * Part IV: Natural Products as Pharmacological Tools * Part V: Nature: The Provider, the Enticer, and the Healer

Natural Products

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Publisher : Royal Society of Chemistry
ISBN 13 : 9780854044900
Total Pages : 168 pages
Book Rating : 4.0/5 (449 download)

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Book Synopsis Natural Products by : James Ralph Hanson

Download or read book Natural Products written by James Ralph Hanson and published by Royal Society of Chemistry. This book was released on 2003 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural products are compounds that are produced by living systems and the secondary metabolites are those which give particular species their characteristic features. These natural products include polyketides, terpenoids, phenylpropanoids, alkaloids and antibiotics. The study of these natural products has played a major part in the development of organic and medicinal chemistry and we are now starting to understand the important ecological role that these compounds have. The aim of this book is to describe the major features of these compounds and the way in which chemical and physical methods have been used to establish their structures and then to show how these structures can be rationalised in biosynthetic terms. The first chapter describes the classes of natural product, their biological activity and isolation. Subsequent chapters attempt to link chemical and spectroscopic strategies in structure elucidation, contrasting the classical chemical strategies that were used in the past with modern spectroscopic methods. The final chapter describes the biosynthesis of natural products. The elucidation of the structures of natural products brings together many elements taught in courses on functional group chemistry, stereochemistry and elementary spectroscopy. This book will therefore be welcomed by lecturers and students of second-year chemistry courses. Ideal for the needs of undergraduate chemistry students, Tutorial Chemistry Texts is a major series consisting of short, single topic or modular texts concentrating on the fundamental areas of chemistry taught in undergraduate science courses. Each book provides a concise account of the basic principles underlying a given subject, embodying an independent-learning philosophy and including worked examples.

Polyynes

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Publisher : CRC Press
ISBN 13 : 1420027581
Total Pages : 528 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Polyynes by : Franco Cataldo

Download or read book Polyynes written by Franco Cataldo and published by CRC Press. This book was released on 2005-08-29 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polyynes: Synthesis, Properties, and Applications compiles information found scattered throughout the literature in inorganic, organic, and polymer chemistry into one cohesive volume. In addition to being a precursor of fullerenes, polyynes are one of the key precursors in the formation of soot and carbon dust, or elemental carbon in the gal

Advances in Macrofungi

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Publisher : CRC Press
ISBN 13 : 1000460126
Total Pages : 426 pages
Book Rating : 4.0/5 (4 download)

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Book Synopsis Advances in Macrofungi by : Kandikere R. Sridhar

Download or read book Advances in Macrofungi written by Kandikere R. Sridhar and published by CRC Press. This book was released on 2021-08-31 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large scale cultivation of macrofungi is possible with fermentation, using easily accessible lignocellulosic agricultural residues applying economical methods to generate substantial biomass, food and biofuels. Bioconversion of lignocellulosic wastes by macrofungi generates value-added fungal nutritional biomass for humans and livestock. Besides commercial cultivation techniques, other topics covered in Advances in Macrofungi: Industrial Avenues and Prospects include: the healing potential of mushrooms, industrial opportunities, mycelium-based products, forest wild mushrooms and industrial applications of white rot fungi. This book reviews the industrial applications and uses of macrofungi. It encourages students and researchers to explore non-conventional sources of nutrition as well as bioactive metabolites to serve as nutraceuticals. It emphasizes the potential of macrofungi as a source of bioactive compounds to remedy human lifestyle diseases especially cancers and cardiovascular ailments along with immunostimulation potential by Cordyceps. This book emphasizes the role of on mushrooms as a source of cosmeceuticals, flavors, essence, scents and perfumes.

Chemistry in the Kitchen Garden

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Publisher : Royal Society of Chemistry
ISBN 13 : 1782625836
Total Pages : 191 pages
Book Rating : 4.7/5 (826 download)

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Book Synopsis Chemistry in the Kitchen Garden by : James R Hanson

Download or read book Chemistry in the Kitchen Garden written by James R Hanson and published by Royal Society of Chemistry. This book was released on 2015-11-09 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decade there has been a resurgence of interest in growing fruit and vegetables in the garden and on the allotment. Part of the driving force behind this is an increased awareness of the health benefits that can be derived from fruit and vegetables in the diet. The 'five helpings a day' dictum reflects the correlation between a regular consumption of fruit and vegetables and a reduced incidence of, for example, cardiovascular disease and some cancers. Growing your own vegetables provides the opportunity to harvest them at their peak, to minimize the time for post-harvest deterioration prior to consumption and to reduce their 'food miles'. It also provides an opportunity to grow interesting and less common cultivars. The combination of economic advantages and recreational factors add to the pleasure of growing fruit and vegetables. This book covers the natural products that have been identified in common 'home-grown' fruit and vegetables and which contribute to their organoleptic and beneficial properties. Over the last fifty years the immense advances in separation methods and spectroscopic techniques for structure elucidation have led to the identification of a wide range of natural products in fruit and vegetables. Not only have many of their beneficial properties been recognized but also their ecological roles in the development of plants have been identified. The functional role of many of these natural products is to mediate the balance between an organism and its environment in terms of microbial, herbivore or plant to plant interactions. The book is aimed at readers with a chemical background who wish to know a little more about the natural products that they are eating, their beneficial effects, and the roles that these compounds have in nature. Developments in the understanding of the ecological and beneficial chemistry of fruit and vegetables have made the exploration of their chemical diversity a fascinating and expanding area of natural product chemistry and readers will obtain some 'taste' for this chemistry from the book. It develops in more detail the relevant sections from the earlier RSC book 'Chemistry in the Garden'. The book begins with an outline of the major groups of compound that are found in fruit and vegetables. This is followed by a description of aspects of environmental chemistry that contribute to the successful cultivation of these crops. Subsequent chapters deal with individual plants which are grouped in terms of the part of the plant, roots, bulbs and stems, leaves, seeds, that are used for food. The final chapters deal with fruit and herbs. The epilogue considers some general aspects of ecological chemistry and climatic stress which may, in the future, affect the growth of fruit and vegetables in the garden particularly in the context of potential climate changes. The book concludes with a section on further reading, a glossary of terms used in plant chemistry and a list of the common fruit and vegetables grouped in their plant families.

The Chemistry of Fungi

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Publisher : Royal Society of Chemistry
ISBN 13 : 1847558321
Total Pages : 234 pages
Book Rating : 4.8/5 (475 download)

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Book Synopsis The Chemistry of Fungi by : James R Hanson

Download or read book The Chemistry of Fungi written by James R Hanson and published by Royal Society of Chemistry. This book was released on 2008-06-24 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fungi occupy an important place in the natural world, as non-photosynthetic organisms, they obtain their nutrients from the degradation of organic material. They use many of their secondary metabolites to secure a place in a competitive natural environment and to protect themselves from predation. The diverse structures, biosyntheses and biological activities of fungal metabolites have attracted chemists for many years. Fungi are ubiquitous and their activities affect many aspects of our daily lives whether it be as sources of pharmaceuticals and food or as spoilage organisms and the causes of diseases in plants and man. The chemistry of the fungi involved in these activities has been the subject of considerable study particularly over the last fifty years. Although their ramifications can be large as in the spread of plant diseases, the quantities of the metabolites which could be isolated precluded much chemical work until the advent of spectroscopic methods. Whereas many natural products derived from plants were isolated prior to the 1960s on a scale which permitted extensive chemical degradation, this was rarely the case for fungal metabolites. This book is an introduction to the chemistry of fungal metabolites. The aim is to illustrate within the context of fungal metabolites, the historical progression from chemical to spectroscopic methods of structure elucidation, the development in biosynthetic studies from establishing sequences and mechanisms to chemical enzymology and genetics and the increasing understanding of the biological roles of natural products. The book begins with a historical introduction followed by a description of the general chemical features which contribute to the growth of fungi. There are many thousands of fungal metabolites whose structures are known and the book does not aim to list them all as there are databases to fulfill this role. The book's aim is to describe some of the more important metabolites classified according to their biosynthetic origin. Biosynthesis provides a unifying feature underlying the diverse structures of fungal metabolites and the chapters covering this area begin with a general outline of the relevant biosynthetic pathway before presenting a detailed description of particular metabolites. Investigations into these biosyntheses have utilized many subtle isotopic labelling experiments and compounds that are fungal pigments and those which are distinctive metabolites of the more conspicuous Basidiomycetes are treated separately. Many fungal metabolites are involved in the interactions of fungi with plants and others are toxic to man and some of these are described in further chapters. Fungi have the ability to transform chemicals in ways which can complement conventional reactions and the use of fungi as reagents forms the subject of the final chapter. This book will be particularly useful to anybody about to embark on a career in chemical microbiology by providing an overall perspective of fungal metabolites as well as an essential reference tool for more general chemists.

Chemistry in the Garden

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Publisher : Royal Society of Chemistry
ISBN 13 : 1782625984
Total Pages : 191 pages
Book Rating : 4.7/5 (826 download)

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Book Synopsis Chemistry in the Garden by : James R Hanson

Download or read book Chemistry in the Garden written by James R Hanson and published by Royal Society of Chemistry. This book was released on 2015-11-09 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to describe some aspects of the chemistry and chemical ecology which are found in the garden. In the garden there are numerous interactions between plants, the soil and with other organisms in which chemistry plays a central mediating role. The discussion concerns several of the chemically and ecologically interesting compounds that are produced by common ornamental garden plants and vegetables and by the predators that attack them. Many chemists are amateur gardeners and this book is directed at them as well as those with a general interest in the scientific processes involved in the garden.

Industrial Inorganic Chemistry

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Publisher : John Wiley & Sons
ISBN 13 : 3527613331
Total Pages : 667 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Industrial Inorganic Chemistry by : Karl Heinz Büchel

Download or read book Industrial Inorganic Chemistry written by Karl Heinz Büchel and published by John Wiley & Sons. This book was released on 2008-11-21 with total page 667 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an up-to-date survey of modern industrial inorganic chemistry in a clear and concise manner. Production processes are described in close detail, aspects such as the disposition of raw materials and energy consumption, the economic significance of the product and technical applications, as well as ecological problems, being discussed. From reviews of the previous edition: '... Overall this is an extremely useful, authoritative reference book dealing with a topic in which it is often difficult to obtain up-to-date information. ...' Chemistry and Industry 'One of few texts available that concisely describes the current state of industrial inorganic chemistry. ...' The New York Public Library '... and as for modern uses of inorganic chemistry, I'd recommend this book as a welcome addition to any professional library...' Chemtech 'This book fills an important niche in its sector. Industrial scientists and engineers, academics, and students can be recommended to turn to it with reasonable confidence that the most important areas are described. ...' Endeavour '... it fills a currently existing gap in the market.' Journal of Chemical Technology and Biotechnology

Traditional Herbal Medicine Research Methods

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Publisher : John Wiley & Sons
ISBN 13 : 0470922664
Total Pages : 393 pages
Book Rating : 4.4/5 (79 download)

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Book Synopsis Traditional Herbal Medicine Research Methods by : Willow J.H. Liu

Download or read book Traditional Herbal Medicine Research Methods written by Willow J.H. Liu and published by John Wiley & Sons. This book was released on 2011-03-29 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the methodology for collection and identification of herbal materials, extraction and isolation of compounds from herbs, in vitro bioassay, in vivo animal test, toxicology, and clinical trials of herbal research. To fully understand and make the best use of herbal medicines requires the close combination of chemistry, biochemistry, biology, pharmacology, and clinical science. Although there are many books about traditional medicines research, they mostly focus on either chemical or pharmacological study results of certain plants. This book, however, covers the systematic study and analysis of herbal medicines in general – including chemical isolation and identification, bioassay and mechanism study, pharmacological experiment, and quality control of the raw plant material and end products.

Conservation of Wood Artifacts

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Publisher : Springer Science & Business Media
ISBN 13 : 9783540415800
Total Pages : 608 pages
Book Rating : 4.4/5 (158 download)

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Book Synopsis Conservation of Wood Artifacts by : A. Unger

Download or read book Conservation of Wood Artifacts written by A. Unger and published by Springer Science & Business Media. This book was released on 2001-08-29 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: The impetus for this book was the desire to systematically organize the extant literature on the conservation of cultural property made of wood, from its beginnings before the Christian Era to the year 2000. Various published reviews and monographs, including Holzkonservierung (Wood Conserva tion) published by the senior author in 1988, have appeared over the years, especially in English and in German. They have provided exemplary treat merit of individual areas or aspects of wood conservation, but a comprehen sive, up-to-date exposition of historic and current developments has been lacking. The diverse professional fields of the authors, as well as their insights into methods of conservation and restoration of wood artifacts in Europe, North America, and Asia provided a solid basis for the success of this under taking. One of the goals during the examination of the literature was that not only well-known conservators and scientists from countries that are leaders in wood conservation should be represented, but that less well-known, often not as readily accessible contributions should also be included. Only in this manner was it possible to draw a comprehensive picture of the national and international state of wood conservation. The Art and Archaeology Technical Abstracts (AATA) of the Getty Institute were very helpful in our efforts to evaluate as many publications as possible.

The ABC Clinical Guide to Herbs

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Publisher :
ISBN 13 :
Total Pages : 520 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis The ABC Clinical Guide to Herbs by : Josef A. Brinckmann

Download or read book The ABC Clinical Guide to Herbs written by Josef A. Brinckmann and published by . This book was released on 2003 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains extensive information on 29 of the most popular herbs sold in the U.S. market today, including which products have shown safe and effective activity in published clinical trials. It also reviews 13 proprietary products used in clinical studies.--[book cover].

Additives for Coatings

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Publisher : John Wiley & Sons
ISBN 13 : 3527613315
Total Pages : 390 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Additives for Coatings by : Johan Bieleman

Download or read book Additives for Coatings written by Johan Bieleman and published by John Wiley & Sons. This book was released on 2008-09-26 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: No doubt: A perfect coating has to look brilliant! But other properties of coatings are also most important. Coatings have to be durable, tough and easily applicable. Additives are the key to success in achieving these characteristics, even though the amounts used in coating formulations are small. It is not trivial at all to select the best additives. In practice, many series of tests are often necessary, and the results do not explain, why a certain additive improves the quality of a coating and another one impairs the coating. This book is dedicated to developers and applicants of coatings working in research or production, and it is aimed at providing a manual for their daily work. It will answer the following questions: How do the most important groups of additives act? Which effects can be be achieved by their addition? Scientific theories are linked to practical applications. Emphasis is put on the optical aspects that are most important for the applications in practice. This book is a milestone in quality assurance in the complete field of coatings!

Aquatic Biopolymers

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Publisher : Springer Nature
ISBN 13 : 3030347095
Total Pages : 371 pages
Book Rating : 4.0/5 (33 download)

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Book Synopsis Aquatic Biopolymers by : Ololade Olatunji

Download or read book Aquatic Biopolymers written by Ololade Olatunji and published by Springer Nature. This book was released on 2020-01-20 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive survey about the most recent developments in industrial applications, processing techniques and modifications of polymers from marine sources. It systematically introduces the reader to the biomaterials Chitin, Collagen, Alginates, Cellulose and Polyesters and links their interwoven industrial significance and environmental implications. The book elucidates the impact of industrial sourcing of the aquatic system for organic and inorganic matter on the environment and deepens the understanding of the industrial and economic significance of aquatic biopolymers. Further it addresses the question of how to balance the conservation of aquatic life and the industrial and economic interest in developing biodegradable alternatives for plastic. Thus the book will appeal to scientists in the field of chemistry, materials and polymer science as well as engineering.

Progress in Botany

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Publisher : Springer Science & Business Media
ISBN 13 : 9783540407218
Total Pages : 656 pages
Book Rating : 4.4/5 (72 download)

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Book Synopsis Progress in Botany by : Karl Esser

Download or read book Progress in Botany written by Karl Esser and published by Springer Science & Business Media. This book was released on 2003-12-04 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: With one volume each year, this series keeps scientists and advanced students informed of the latest developments and results in all areas of the plant sciences. The present volume includes reviews on genetics, cell biology, physiology, comparative morphology, systematics, ecology, and vegetation science.

Natural Products Isolation

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Publisher : Springer Science & Business Media
ISBN 13 : 1592599559
Total Pages : 518 pages
Book Rating : 4.5/5 (925 download)

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Book Synopsis Natural Products Isolation by : Satya D. Sarker

Download or read book Natural Products Isolation written by Satya D. Sarker and published by Springer Science & Business Media. This book was released on 2008-02-05 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term “natural products” spans an extremely large and diverse range of chemical compounds derived and isolated from biological sources. Our interest in natural products can be traced back thousands of years for their usefulness to humankind, and this continues to the present day. Compounds and extracts derived from the biosphere have found uses in medicine, agriculture, cosmetics, and food in ancient and modern societies around the world. Therefore, the ability to access natural products, understand their usefulness, and derive applications has been a major driving force in the field of natural product research. The first edition of Natural Products Isolation provided readers for the first time with some practical guidance in the process of extraction and isolation of natural products and was the result of Richard Cannell’s unique vision and tireless efforts. Unfortunately, Richard Cannell died in 1999 soon after completing the first edition. We are indebted to him and hope this new edition pays adequate tribute to his excellent work. The first edition laid down the “ground rules” and established the techniques available at the time. Since its publication in 1998, there have been significant developments in some areas in natural product isolation. To capture these developments, publication of a second edition is long overdue, and we believe it brings the work up to date while still covering many basic techniques known to save time and effort, and capable of results equivalent to those from more recent and expensive techniques.

Episodes from the History of the Rare Earth Elements

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Publisher : Springer Science & Business Media
ISBN 13 : 9400902875
Total Pages : 255 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Episodes from the History of the Rare Earth Elements by : C. H. Evans

Download or read book Episodes from the History of the Rare Earth Elements written by C. H. Evans and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: 3. 4. 2. "SOMETHING ON CERIUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 3. 4. 3. THE DISCOVERY OF LANTHANUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 3. 4. 4. THE DISCOVERY OF DIDYMIUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 3. 4. 5. THE NAME DIDYMIUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 3. 4. 6. THE DISCOVERY OF TERBIUM AND ERBIUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 3. 5. The Cork Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 3. 6. Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 3. 7. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Chapter 4. THE 50 YEARS FOLLOWING MOSANDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 F. SZABADVARY and C. EVANS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 4. 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 4. 2. The Terbium Dispute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 4. 3. Samarium and Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 4. 4. The Division of Erbium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 4. 5. Separating the Twins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 4. 6. Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 4. 7. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Chapter 5. ELEMENTS NO. 70, 71 AND 72: DISCOVERIES AND CONTROVERSIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 HELGE KRAGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 5. 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 5. 2. The ytterbium earths unti11905 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 5. 3. Auer von Welsbach: aldebaranium and cassiopeium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 5. 4. Urbain: neo-ytterbium and lutecium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 5. 5. The ytterbium controversy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 5. 6. Celtium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 5. 7. Hafnium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 5. 8. New light on old elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 5. 9. Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 5. 10. Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 5. 11. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Chapter 6. THE SEARCH FOR ELEMENT 61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 JACOB A. MARlNSKY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 6. 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 6. 2. Separations and Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 6. 3. Discovery Confirmed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 6. 4. Announcing, Claiming and 'Naming Element 61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 6. 5. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 vii PART II - APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 Chapter 7. CARL AUER VON WELSBACH A PIONEER IN THE INDUSTRIAL APPLICATION OF RARE EAR THS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 E. BAUMGARTNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .