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Books > Science & Mathematics > Science: general issues > Scientific nomenclature & classification

The Periodic Table: A Very Short Introduction (Paperback, 2nd Revised edition): Eric Scerri The Periodic Table: A Very Short Introduction (Paperback, 2nd Revised edition)
Eric Scerri
R233 R162 Discovery Miles 1 620 Save R71 (30%) Shipped within 7 - 12 working days

The periodic table of elements, first encountered by many of us at school, provides an arrangement of the chemical elements, ordered by their atomic number, electron configuration, and recurring chemical properties, and divided into periodic trends. In this Very Short Introduction Eric Scerri looks at the trends in properties of elements that led to the construction of the table, and shows how the deeper meaning of the table's structure gradually became apparent with the development of atomic theory and, in particular, quantum mechanics, which underlies the behaviour of all of the elements and their compounds. This new edition, publishing in the International Year of the Periodic Table, celebrates the completion of the seventh period of the table, with the ratification and naming of elements 113, 115, 117, and 118 as nihonium, moscovium, tennessine, and oganesson. Eric Scerri also incorporates new material on recent advances in our understanding of the origin of the elements, as well as developments concerning group three of the periodic table. ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.

Flora of the Pan-Himalaya Asteraceae II (Saussurea): Series Number 48, Part 2 (Hardcover): You-Sheng Chen Flora of the Pan-Himalaya Asteraceae II (Saussurea): Series Number 48, Part 2 (Hardcover)
You-Sheng Chen
R2,835 Discovery Miles 28 350 Shipped within 7 - 12 working days

This second part of Volume 48 of the Flora of Pan-Himalaya is devoted to the single genus, Saussurea of the Asteraceae family, which has wide medicinal applications. This is the largest family in the Pan-Himalaya, with 235 species, 149 of which are endemic to the Pan-Himalaya. Saussurea is a notoriously difficult, largely Asiatic, genus with often indistinct species boundaries. Many new species of Saussurea were described in the course of preparing this account. The nomenclatural novelties in this volume include five changes in status, and 17 new synonyms. 27 lectotypes are newly designated. During the research for this volume, the author and his team described 40 new species of Saussurea, and these, along with numerous new designations and classifications, are recorded here for the first time.

Compendium of Terminology and Nomenclature of Properties in Clinical Laboratory Sciences - Recommendations 2016 (Hardcover):... Compendium of Terminology and Nomenclature of Properties in Clinical Laboratory Sciences - Recommendations 2016 (Hardcover)
Georges Ferard, Rene Dybkaer, Xavier Fuentes Arderiu
R2,433 Discovery Miles 24 330 Shipped within 7 - 12 working days

There has been significant expansion and development in clinical laboratory sciences and, in particular, metrological concepts, definitions and terms since the previous edition of this book was published in 1995. It is of prime importance to standardize laboratory reports for reliable exchange of patient examination data without loss of meaning or accuracy. New disciplines have appeared and the interrelationships between different disciplines within clinical laboratory sciences demand a common structure and language for data exchange, in the laboratory and with the clinicians, necessitating additional coverage in this book. These new sections will be based upon recommendations published by various national, regional, and international bodies especially IUPAC and IFCC. This book groups and updates the recommendations and will be appropriate for laboratory scientists, medical professionals and students in this area.

Naming Nature - The Clash Between Instinct and Science (Paperback): Carol Kaesuk Yoon Naming Nature - The Clash Between Instinct and Science (Paperback)
Carol Kaesuk Yoon
R401 R328 Discovery Miles 3 280 Save R73 (18%) Shipped within 7 - 13 working days

Biologist Carol Kaesuk Yoon explores the historical tension between evolutionary biology and taxonomy. Carl Linnaeus struggled in the eighteenth century to define species in light of their mutability while still relying on intuitive, visual judgments. As taxonomy modernized, it moved into labs, yielding results counterintuitive to humanity s innate predisposition to order the world. By conceding scientific authority to taxonomists, Yoon argues, we ve contributed to our own alienation from nature."

Atlas of Knowledge - Anyone Can Map (Hardcover): Katy Borner Atlas of Knowledge - Anyone Can Map (Hardcover)
Katy Borner
R899 R650 Discovery Miles 6 500 Save R249 (28%) Shipped within 7 - 12 working days

The power of mapping: principles for visualizing knowledge, illustrated by many stunning large-scale, full-color maps. Maps of physical spaces locate us in the world and help us navigate unfamiliar routes. Maps of topical spaces help us visualize the extent and structure of our collective knowledge; they reveal bursts of activity, pathways of ideas, and borders that beg to be crossed. This book, from the author of Atlas of Science, describes the power of topical maps, providing readers with principles for visualizing knowledge and offering as examples forty large-scale and more than 100 small-scale full-color maps. Today, data literacy is becoming as important as language literacy. Well-designed visualizations can rescue us from a sea of data, helping us to make sense of information, connect ideas, and make better decisions in real time. In Atlas of Knowledge, leading visualization expert Katy Boerner makes the case for a systems science approach to science and technology studies and explains different types and levels of analysis. Drawing on fifteen years of teaching and tool development, she introduces a theoretical framework meant to guide readers through user and task analysis; data preparation, analysis, and visualization; visualization deployment; and the interpretation of science maps. To exemplify the framework, the Atlas features striking and enlightening new maps from the popular "Places & Spaces: Mapping Science" exhibit that range from "Key Events in the Development of the Video Tape Recorder" to "Mobile Landscapes: Location Data from Cell Phones for Urban Analysis" to "Literary Empires: Mapping Temporal and Spatial Settings of Victorian Poetry" to "Seeing Standards: A Visualization of the Metadata Universe." She also discusses the possible effect of science maps on the practice of science.

Science Communication - A Practical Guide for Scientists (Hardcover, New): Laura Bowater, Kay Yeoman Science Communication - A Practical Guide for Scientists (Hardcover, New)
Laura Bowater, Kay Yeoman
R2,065 R1,578 Discovery Miles 15 780 Save R487 (24%) Shipped within 7 - 13 working days

Science communication is a rapidly expanding area and meaningful engagement between scientists and the public requires effective communication. Designed to help the novice scientist get started with science communication, this unique guide begins with a short history of science communication before discussing the design and delivery of an effective engagement event. Along with numerous case studies written by highly regarded international contributors, the book discusses how to approach face-to-face science communication and engagement activities with the public while providing tips to avoid potential pitfalls. This book has been written for scientists at all stages of their career, including undergraduates and postgraduates wishing to engage with effective science communication for the first time, or looking to develop their science communication portfolio.

Science Communication - A Practical Guide for Scientists (Paperback, New): Laura Bowater, Kay Yeoman Science Communication - A Practical Guide for Scientists (Paperback, New)
Laura Bowater, Kay Yeoman
R790 R623 Discovery Miles 6 230 Save R167 (21%) Shipped within 7 - 13 working days

Science communication is a rapidly expanding area and meaningful engagement between scientists and the public requires effective communication. Designed to help the novice scientist get started with science communication, this unique guide begins with a short history of science communication before discussing the design and delivery of an effective engagement event. Along with numerous case studies written by highly regarded international contributors, the book discusses how to approach face-to-face science communication and engagement activities with the public while providing tips to avoid potential pitfalls. This book has been written for scientists at all stages of their career, including undergraduates and postgraduates wishing to engage with effective science communication for the first time, or looking to develop their science communication portfolio.

The Elements - A Visual Exploration of Every Known Atom in the Universe (Hardcover): Nick Mann, Theodore Gray The Elements - A Visual Exploration of Every Known Atom in the Universe (Hardcover)
Nick Mann, Theodore Gray 1
R612 R495 Discovery Miles 4 950 Save R117 (19%) Shipped within 7 - 11 working days

"The Elements" has become an international sensation, with over one million copies in-print worldwide. An eye-opening, original collection of gorgeous, never-before-seen photographic representations of the 118 elements in the periodic table. The elements are what we, and everything around us, are made of. But how many elements has anyone actually seen in pure, uncombined form? "The Elements" provides this rare opportunity. Based on seven years of research and photography, the pictures in this book make up the most complete, and visually arresting, representation available to the naked eye of every atom in the universe. Organized in order of appearance on the periodic table, each element is represented by a spread that includes a stunning, full-page, full-color photograph that most closely represents it in its purest form. For example, at -183 C, oxygen turns from a colorless gas to a beautiful pale blue liquid. Also included are fascinating facts, figures, and stories of the elements as well as data on the properties of each, including atomic weight, density, melting and boiling point, valence, electronegativity, and the year and location in which it was discovered. Several additional photographs show each element in slightly altered forms or as used in various practical ways. The element's position on the periodic table is pinpointed on a mini rendering of the table and an illustrated scale of the element's boiling and/or melting points appears on each page along with a density scale that runs along the bottom. Packed with interesting information, this combination of solid science and stunning artistic photographs is the perfect gift book for every sentient creature in the universe.Includes a tear-out poster of Theodore Gray's iconic Photographic Periodic Table "

A Concise Summary of Quantities, Units and Symbols in Physical Chemistry (Plate (lmina)): Juergen Stohner, Martin Quack A Concise Summary of Quantities, Units and Symbols in Physical Chemistry (Plate (lmina))
Juergen Stohner, Martin Quack
R285 Discovery Miles 2 850 Shipped within 7 - 12 working days

An immense amount of physical chemistry information is packed into two sides of A4 in this consise summary of quantities, units and symbols.

Flowering Plants. Eudicots - Asterales (Hardcover, 2007 ed.): Joachim W. Kadereit, Charles Jeffrey Flowering Plants. Eudicots - Asterales (Hardcover, 2007 ed.)
Joachim W. Kadereit, Charles Jeffrey
R5,574 R4,949 Discovery Miles 49 490 Save R625 (11%) Shipped within 7 - 12 working days

This volume contains a complete systematic treatment of the flowering plant order Asterales. This comprises 12 families with approx. 1,720 genera and about 26,300 species. Identification keys are provided for all genera, and likely phylogenetic relationships are discussed extensively. The wealth of information contained in this volume makes it an indispensable source for all working in the fields of pure and applied plant sciences.

Handbook of Proteins - Structure, Function and Methods 2 Volume Set (Hardcover, 2 Volume Set): Michael M. Cox, George N.... Handbook of Proteins - Structure, Function and Methods 2 Volume Set (Hardcover, 2 Volume Set)
Michael M. Cox, George N. Phillips
R8,907 R8,236 Discovery Miles 82 360 Save R671 (8%) Shipped within 7 - 13 working days

The "Handbook of Proteins" provides scientists and students with a focused and accessible resource covering all aspects of protein biochemistry. It describes traditional and state-of-the-art techniques for elucidating protein function and structure. Derived from the acclaimed "Encyclopedia of Life Sciences" Presented in full-colour throughout Assembles more than 200 peer-reviewed articles, written by top scientists in each field The articles are reliable, self-contained and cross-referenced throughout Almost all aspects of protein structure, function, and chemistry are illuminated by one or more articles Numerous articles also provide an introduction to methods for purifying proteins, determining their structures and properties, and cataloguing them in databases Dozens of additional articles detail important aspects of enzymatic catalysis and protein-ligand interactions

The "Handbook of Proteins" is a comprehensive and authoritative resource for teachers, students and researchers in the molecular life sciences. The easy layout encourages frequent retrieval.

Principles of Chemical Nomenclature - A Guide to IUPAC Recommendations 2011 Edition (Hardcover, 2011): Jeff Leigh Principles of Chemical Nomenclature - A Guide to IUPAC Recommendations 2011 Edition (Hardcover, 2011)
Jeff Leigh
R607 Discovery Miles 6 070 Shipped within 7 - 12 working days

The ultimate aim of IUPAC nomenclature is to provide unequivocal and comprehensible names for all kinds of chemical structures. This requires a rational basis from which comprehensible names can be developed. Written by leading world authorities this second edition of Principles of Chemical Nomenclature outlines IUPAC recommendations for application in the principle branches of chemistry: organic, inorganic, organometallic, and polymer. It also includes some basic biochemical nomenclature. The book clearly explains the fundamental principles of nomenclature methods and enables the reader to apply them accurately and with confidence. New developments are described and additional nomenclature systems used in specific industries are introduced. The book is replete with examples for guidance and there are extensive tables to direct the reader to information quickly. Aimed at chemistry teachers and students at all levels, it advises on the best presentation of formulae and chemical graphics. Although rather advanced for school pupils, their teachers will find it useful.

The Elements - A Visual Exploration of Every Known Atom in the Universe (Paperback): Nick Mann, Theodore Gray The Elements - A Visual Exploration of Every Known Atom in the Universe (Paperback)
Nick Mann, Theodore Gray 1
R409 R340 Discovery Miles 3 400 Save R69 (17%) Shipped within 7 - 11 working days

"The Elements"has become an international sensation, with over one million copies in-print worldwide.The highly-anticipated paperback edition of"The Elements"is finally available.An eye-opening, original collection of gorgeous, never-before-seen photographic representations of the 118 elements in the periodic table.The elements are what we, and everything around us, are made of. But how many elements has anyone actually seen in pure, uncombined form?"The Elements"provides this rare opportunity. Based on seven years of research and photography, the pictures in this book make up the most complete, and visually arresting, representation available to the naked eye of every atom in the universe. Organized in order of appearance on the periodic table, each element is represented by a spread that includes a stunning, full-page, full-color photograph that most closely represents it in its purest form. For example, at -183 C, oxygen turns from a colorless gas to a beautiful pale blue liquid.Also included are fascinating facts, figures, and stories of the elements as well as data on the properties of each, including atomic weight, density, melting and boiling point, valence, electronegativity, and the year and location in which it was discovered. Several additional photographs show each element in slightly altered forms or as used in various practical ways. The element's position on the periodic table is pinpointed on a mini rendering of the table and an illustrated scale of the element's boiling and/or melting points appears on each page along with a density scale that runs along the bottom.Packed with interesting information, this combination of solid science and stunning artistic photographs is the perfect gift book for every sentient creature in the universe.Includes a tear-out poster of Theodore Gray's iconic Photographic Periodic Table "

Nomenclature of Organic Chemistry - IUPAC Recommendations and Preferred Names 2013 (Hardcover): Henri A. Favre, Warren H. Powell Nomenclature of Organic Chemistry - IUPAC Recommendations and Preferred Names 2013 (Hardcover)
Henri A. Favre, Warren H. Powell; Contributions by IUPAC (International Union of Pure and Applied Chemistry), Terry Renner, John W. Jost
R3,945 Discovery Miles 39 450 Shipped within 7 - 12 working days

Chemical nomenclature is used to identify a chemical species by means of written or spoken words and enables a common language for communication amongst chemists. Nomenclature for chemical compounds additionally contains an explicit or implied relationship to the structure of the compound, in order that the reader or listener can deduce the structure from the name. This purpose requires a system of principles and rules, the application of which gives rise to a systematic nomenclature. Of course, a wide range of traditional names, semisystematic or trivial, are also in use for a core group of common compounds. Detailing the latest rules and international practice, this new volume can be considered a guide to the essential organic chemical nomenclature, commonly described as the "Blue Book". An invaluable source of information for organic chemists everywhere and the definitive guide for scientists working in academia or industry, for scientific publishers of books, journals and databases, and for organisations requiring internationally approved nomenclature in a legal or regulatory environment.

Dow's Fire and Explosion Index Hazard Classification Guide (Paperback, 7th Edition): American Institute of Chemical... Dow's Fire and Explosion Index Hazard Classification Guide (Paperback, 7th Edition)
American Institute of Chemical Engineers (AIChE)
R1,630 R1,153 Discovery Miles 11 530 Save R477 (29%) Shipped within 7 - 13 working days

This popular safety best-seller is designed to help the user quantify the expected damage of potential fire and explosion incidents in realistic terms, identify the equipment likely to contribute to the creation or escalation of an incident, and communicate the fire and explosion risk potential to management. Based on Dow's Fire and Explosion Risk Analysis Program, the index provides a step-by-step, objective evaluation of the actual fire and explosion, as well as reactivity potential of process equipment and its contents.

Advances in Learning Classifier Systems - 4th International Workshop, IWLCS 2001, San Francisco, CA, USA, July 7-8, 2001.... Advances in Learning Classifier Systems - 4th International Workshop, IWLCS 2001, San Francisco, CA, USA, July 7-8, 2001. Revised Papers (Paperback, 2002 ed.)
Pier Luca Lanzi, Wolfgang Stolzmann, Stewart W. Wilson
R1,575 R1,376 Discovery Miles 13 760 Save R199 (13%) Shipped within 7 - 12 working days

This book constitutes the thoroughly refereed post-proceedings of the 4th International Workshop on Learning Classifier Systems, IWLCS 2001, held in San Francisco, CA, USA, in July 2001.The 12 revised full papers presented together with a special paper on a formal description of ACS have gone through two rounds of reviewing and improvement. The first part of the book is devoted to theoretical issues of learning classifier systems including the influence of exploration strategy, self-adaptive classifier systems, and the use of classifier systems for social simulation. The second part is devoted to applications in various fields such as data mining, stock trading, and power distributionn networks.

Trees and Hierarchical Structures - Proceedings of a Conference held at Bielefeld, FRG, Oct. 5-9th, 1987 (Paperback, 1990 ed.):... Trees and Hierarchical Structures - Proceedings of a Conference held at Bielefeld, FRG, Oct. 5-9th, 1987 (Paperback, 1990 ed.)
Andreas Dress, Arndt Von Haeseler
R1,852 Discovery Miles 18 520 Shipped within 7 - 11 working days

The "raison d'etre" of hierarchical dustering theory stems from one basic phe- nomenon: This is the notorious non-transitivity of similarity relations. In spite of the fact that very often two objects may be quite similar to a third without being that similar to each other, one still wants to dassify objects according to their similarity. This should be achieved by grouping them into a hierarchy of non-overlapping dusters such that any two objects in ~ne duster appear to be more related to each other than they are to objects outside this duster. In everyday life, as well as in essentially every field of scientific investigation, there is an urge to reduce complexity by recognizing and establishing reasonable das- sification schemes. Unfortunately, this is counterbalanced by the experience of seemingly unavoidable deadlocks caused by the existence of sequences of objects, each comparatively similar to the next, but the last rather different from the first.

Natural Categories and Human Kinds - Classification in the Natural and Social Sciences (Paperback): Muhammad Ali Khalidi Natural Categories and Human Kinds - Classification in the Natural and Social Sciences (Paperback)
Muhammad Ali Khalidi
R527 Discovery Miles 5 270 Shipped within 7 - 11 working days

The notion of 'natural kinds' has been central to contemporary discussions of metaphysics and philosophy of science. Although explicitly articulated by nineteenth-century philosophers like Mill, Whewell and Venn, it has a much older history dating back to Plato and Aristotle. In recent years, essentialism has been the dominant account of natural kinds among philosophers, but the essentialist view has encountered resistance, especially among naturalist metaphysicians and philosophers of science. Informed by detailed examination of classification in the natural and social sciences, this book argues against essentialism and for a naturalist account of natural kinds. By looking at case studies drawn from diverse scientific disciplines, from fluid mechanics to virology and polymer science to psychiatry, the author argues that natural kinds are nodes in causal networks. On the basis of this account, he maintains that there can be natural kinds in the social sciences as well as the natural sciences.

Classification and Human Evolution (Paperback, New Ed): Sherwood L. Washburn Classification and Human Evolution (Paperback, New Ed)
Sherwood L. Washburn
R1,078 Discovery Miles 10 780 Shipped within 7 - 11 working days

The names given to the variety of man-like fossils known to scientists should reflect no more than scientific views of the nature of human evolution. However, often in the past these names have also reflected confusion regarding the basic principles of scientific nomenclature; and the matter has been further complicated by the many new finds of recent decades. It is the unique purpose of this book to clarify the present state of knowledge regarding the main lines of human evolution by expressing what is known (and what is surmised) about them in appropriate taxonomic language.

The papers in this volume were prepared by the world's leading authorities on the subject, and were revised in the light of discussions at a remarkable conference held in Austria in 1962 under the auspices of the Wenner-Gren Foundation. The authors review first the meaning of taxonomic statements as such, and then consider the substance of our present knowledge regarding the number and characteristics of species among living and extinct primates, including man and his ancestors. They also examine the relationship of behavior changes and selection pressures in evolutionary sequences.

Ample illustrations, bibliographies and an index enhance the permanent reference value of the book, which will undoubtedly prove to be among the fundamental paleoanthropological works of our time.

Sherwood L. Washburn (1911-2000) was professor of physical anthropology in the University of California at Berkeley. He was the recipient of the Huxley Medal in 1967 and the American Anthropological Association Distinguished Service Award in 1983.

Understanding the Language of Science (Paperback, New): Steven G. Darian Understanding the Language of Science (Paperback, New)
Steven G. Darian
R670 Discovery Miles 6 700 Shipped within 7 - 11 working days

"To my knowledge, there has never [before] been a volume that analyzes, in one place, the actual language of science-- those elements of thinking that are acknowledged to be the basis of scientific thought. . . . [Thus] this is a very important book, contributing to several fields: science, education, rhetoric, medicine, and perhaps even philosophy. . . . Darian's erudition is truly astonishing." -- Celest A. Martin, Associate Professor, College Writing Program, University of Rhode Island

From astronomy to zoology, the practice of science proceeds from scientific ways of thinking. These patterns of thought, such as defining and classifying, hypothesizing and experimenting, form the building blocks of all scientific endeavor. Understanding how they work is therefore an essential foundation for everyone involved in scientific study or teaching, from elementary school students to classroom teachers and professional scientists.

In this book, Steven Darian examines the language of science in order to analyze the patterns of thinking that underlie scientific endeavor. He draws examples from university science textbooks in a variety of disciplines, since these offer a common, even canonical, language for scientific expression. Darian identifies and focuses in depth on nine patterns-- defining, classifying, using figurative language, determining cause and effect, hypothesizing, experimenting, visualizing, quantifying, and comparing-- and shows how they interact in practice. He also traces how these thought modes developed historically from Pythagoras through Newton.

The Variety of Life - A survey and a celebration of all the creatures that have ever lived (Paperback, New Ed): Colin Tudge The Variety of Life - A survey and a celebration of all the creatures that have ever lived (Paperback, New Ed)
Colin Tudge
R872 Discovery Miles 8 720 Shipped within 7 - 11 working days

This text can be read at many levels. Not least it is an extraordinary inventory - an illustrated summary of all the Earthly creatures that have ever lived. Whatever living thing you come across, from E-coli to an oak tree or an elephant, this book will show you what kind of creature it is, and how it relates to all others. Yet there are far too many creatures to present merely as a catalogue. The list of species already described is vast enough - nearly two million - but there could in reality be as many as 30 million different animals, plants, fungi and protists - and perhaps another 400 million different bacteria and archaea. In the 4000 million years or so since life first began on Earth, there could have been several thousand billion different species. The only way to keep track of so many is to classify - placing similar creatures into categories, which nest within larger categories, and so on. As the centuries have passed, so it has become clear that the different groups are far more diverse than had ever been appreciated. Thus Linneus in the 18th century placed all living things in just two kingdoms, Animals and Plants.

Quantities, Symbols, Units, and Abbreviations in the Life Sciences - A Guide for Authors and Editors (Paperback, Softcover... Quantities, Symbols, Units, and Abbreviations in the Life Sciences - A Guide for Authors and Editors (Paperback, Softcover reprint of the original 1st ed. 1999)
Arnost Kotyk
R1,158 Discovery Miles 11 580 Shipped within 7 - 11 working days

Quantities, Symbols, Units, and Abbreviations in the Life Sciences is a reliable compilation of the most up-to-date recommendations for using units, symbols, abbreviations, and acronyms in scientific publications across the biological sciences. Drawing on the authority of the various nomenclature committees of the many international societies in the biosciences, as well as on the editors of prestigious scientific journals, and on eminent individuals active in scientific publishing, this essential reference provides authors and editors with easy access to the authoritative usage of the universally accepted terms they need for clear scientific communication. The compiled symbols, units, and abbreviations are defined, with commentary and some etymological background frequently provided. The diverse scope of disciplines treated includes biochemistry, molecular biology, medicine, genetics, immunology, and virology, plus appropriate sections on mathematics, physics, and chemistry.

Histological Typing of Soft Tissue Tumours (Paperback, 2nd ed. 1994): Sharon W. Weiss Histological Typing of Soft Tissue Tumours (Paperback, 2nd ed. 1994)
Sharon W. Weiss
R4,243 Discovery Miles 42 430 Shipped within 7 - 11 working days

The first edition of Histological Typing of Soft Tissue Tumours, pub- lished in 1969, represented a major step in the standardization of nomen- clature in this specialty area. Accompanied by a glass slide set of more than a hundred common and exotic tumours, this book resulted in the rapid assimilation of a universal set of guidelines and diagnostic defini- tions by pathologists in many countries. In the intervening two decades numerous changes have occurred, and our committee has been chal- lenged by the desire to incorporate new and exciting findings from the areas of immunohistochemistry and molecular biology into the classifi- cation with the need to develop a simple reproducible classification for practising pathologists. The current system, while based principally on standard microscopic observations, acknowledges and cites the use of di- agnostically valuable ancillary techniques. Changes in the Classification Although the original classification utilized the concept of "histogene- sis" or tissue of origin in defining tumours, we have departed from that point of view, acknowledging the impossibility of determining histogen- esis by morphologic means alone. This classification is based on the "line of differentiation", or stated simply, by comparing tumours to the nor- mal cell they most closely resemble without necessarily implying origin therefrom. As in the old classification we have interpreted the term "tu- mours" in the broadest sense of the word and have, therefore, included neoplastic and non-neoplastic conditions.

The Platypus and the Mermaid - And Other Figments of the Classifying Imagination (Paperback, New Ed): Harriet Ritvo The Platypus and the Mermaid - And Other Figments of the Classifying Imagination (Paperback, New Ed)
Harriet Ritvo
R627 Discovery Miles 6 270 Shipped within 7 - 11 working days

"Cats is 'dogs,' and rabbits is 'dogs,' and so's parrots; but this `ere 'tortis' is a insect," a porter explains to an astonished traveler in a nineteenth-century Punch cartoon. Railways were not the only British institution to schematize the world. This enormously entertaining book captures the fervor of the Victorian age for classifying and categorizing every new specimen, plant or animal, that British explorers and soldiers and sailors brought home. As she depicts a whole complex of competing groups deploying rival schemes and nomenclatures, Harriet Ritvo shows us a society drawing and redrawing its own boundaries and ultimately identifying itself. The experts (whether calling themselves naturalists, zoologists, or comparative anatomists) agreed on their superior authority if nothing else, but the laymen had their say--and Ritvo shows us a world in which butchers and artists, farmers and showmen vied to impose order on the wild profusion of nature. Sometimes assumptions or preoccupations overlapped; sometimes open disagreement or hostility emerged, exposing fissures in the social fabric or contested cultural territory. Of the greatest interest were creatures that confounded or crossed established categories; in the discussions provoked by these mishaps, monstrosities, and hybrids we can see ideas about human society--about the sexual proclivities of women, for instance, or the imagined hierarchy of nations and races. A thoroughly absorbing account of taxonomy--as zoological classification and as anthropological study--The Platypus and the Mermaid offers a new perspective on the constantly shifting, ever suggestive interactions of scientific lore, cultural ideas, and the popular imagination.

Larvae of Owlet Moths (Noctuidae) - Biology, Morphology and Classification (Hardcover): O.I Merzheevskaya Larvae of Owlet Moths (Noctuidae) - Biology, Morphology and Classification (Hardcover)
O.I Merzheevskaya
R1,965 Discovery Miles 19 650 Special order

This book provides information on the biology and morphology of owlet moth larvae and keys to their subfamilies, genera and species. Morphological characters, body coloration, and dermal patterns are detailed for each species. The larvae of 144 species are described and data on developmental changes in instars given for 91 of them. 97 figures.

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