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Author : Frank A. von Hippel Publisher : University of Chicago Press Page : 404 pages File Size : 53,6 Mb Release : 2020-09-04 Category : Science ISBN : 9780226697383
This sweeping history reveals how the use of chemicals has saved lives, destroyed species, and radically changed our planet: “Remarkable . . . highly recommended.” —Choice In The Chemical Age, ecologist Frank A. von Hippel explores humanity’s long and uneasy coexistence with pests, and how the battles to exterminate them have shaped our modern world. He also tells the captivating story of the scientists who waged war on famine and disease with chemistry. Beginning with the potato blight tragedy of the 1840s, which led scientists on an urgent mission to prevent famine using pesticides, von Hippel traces the history of pesticide use to the 1960s, when Rachel Carson’s Silent Spring revealed that those same chemicals were insidiously damaging our health and driving species toward extinction. Telling the story in vivid detail, von Hippel showcases the thrills—and complex consequences—of scientific discovery. He describes the creation of chemicals used to kill pests—and people. And, finally, he shows how scientists turned those wartime chemicals on the landscape at a massive scale, prompting the vital environmental movement that continues today.
Encyclopedia of Chemical Processing and Design by John J. McKetta Jr Pdf
"Written by engineers for engineers (with over 150 International Editorial Advisory Board members),this highly lauded resource provides up-to-the-minute information on the chemical processes, methods, practices, products, and standards in the chemical, and related, industries. "
Living in the Chemical Age: How an Ounce of Prevention Can Protect Your Family from a World of Toxins by Ph. D. Janet Newman Pdf
We live in an age of convenience, consumerism, and immediate gratification. But the exponential changes happening in our society have an effect: More toxins are invading our lives than ever before. The best way to prevent harm from toxins is to avoid them-and Janet Newman, Ph.D., can show you how. Living in the Chemical Age is an eye-opening look at how we can live less polluted lives. In this indispensable guide, Janet identifies contaminants in our food, water, personal care products, environment, pharmaceuticals, and even nature; explains the physical effects these chemicals can have; and explores everyday ways to avoid them. Whether you're a mom concerned about her kids or a citizen hoping to positively use your consumer power, Janet's clear and simple tips will help you make everyday choices that can lead to a healthier world.
The Chemical Age - Chemical Dictionary - Chemical Terms. by Hesperides Pdf
Text extracted from opening pages of book: THE CHEMICAL AGE CHEMICAL DICTIONARY CHEMICAL TERMS LONDON: ERNEST BENN LIMITED 8, BOUVERIE STREET, B. C. 4 i 924 Print, d by Jarrold & Sons, Limited, Norwich PREFACE Y HE vast output of chemical literature at the present time is presenting almost insuperable I difficulties to those who attempt to keep abreast of the rapid advances in chemical science. Not the least of these difficulties is the terminology of the subject, for chemical terms are multiplying at a bewildering rate. Frequently, too, when a new word or expression is coined it is followed up with an abbreviation or symbol by which it is expressed. One has, in fact, only to glance through the abstracts of the English and American Chemical Societies to realise the difficulty. The Chemical Age Dictionary of Chemical Terms has been compiled by experts to meet the needs of all those who have to consult not only original papers or their abstracts but other forms of lit erature as represented by reviews and modern textbooks. It will, therefore, make a direct appeal to all chemists from the student to the director of research. The subjects dealt with include organic, inorganic, physical, analytical and biochemistry. Unfortunately, many chemical terms are loose and even vague and it is very difficult, if not impossible, to give exact definitions in such cases. Indeed, it is undesirable to attempt to give an exact definition where none exists This is especially the case with names by which certain theories or concepts are known. In general the terms will be found in the form in which they are most frequently met with in technical literature, but in order to avoid repetition it has been foundconvenient in some cases to include a number of closely related terms under one general term. Thus, the different types of isomerism are classed together under Isomerism, the different kinds of spectra under Spectrum, and so on. Tide many laws, reactions, etc., are not grouped together under these headings but will be found under the names by which they arc known For example Henry's Law, and not Law of Henry, Hoesch Reaction, and not Reaction, Hoesch van't Hoff factor and not Factor, van't Hoff. In many cases cross-references are given not only to the same subject but to cognate subjects. No effort has been spared to illustrate the explanations and definitions by means of examples; and it is hoped that these will be of great assistance in elucidating terms which could not otherwise be made perfectly clear. The Dictionary is an essential supplement to, but not a substitute for, the textbook. The present dictionary is intended to be the forerunner of successive volumes, each one of which will deal with the subject as it appears in its different phases. Thus, it is hoped to publish a second volume dealing with Organic Substances, a third dealing with Inorganic Substances, etc. No Dictionary compiled on similar lines has as yet appeared in the English language. It is hoped, therefore, that the present volume will prove not only a novelty, but an indispensable companion for all those who are interested in pure chemistry or its application to industry. LONDON / September, 1924 CONTENTS PAGE PREFACE .....------5 A 9 B 24 C 30 D - 45 E 56 F - 64 G -----6 9 H 74 I ** J ** K 92 L 94 M 97 N 106 O - - in P H7 Q 128 R 130 S 135 T * 45 U * 5i V IS* W J 54 X 155 2 J 56 TABLE OF SYMBOLS ----------* 57THE CHEMICAL AGE CHEMICAL DICTIONARY: CHEMICAL TERMS Absolute Zero. The temperature 273 centigrade. Temperatures measured from this zero are termed absolute temperatures and are generally designated by a capital T If t is the temperature centigrade then T = 273 - ft . Absorptiometer. An apparatus for deter mining the solubility of gases in liquids. It consists of a graduated vessel containing the liquid and a known volume of gas; or the absorption may be done in a separate vessel, the gas being measured out from a burette There are several modifications of thes
Lifespan by David A. Sinclair,Matthew D. LaPlante Pdf
A NEW YORK TIMES BESTSELLER “Brilliant and enthralling.” —The Wall Street Journal A paradigm-shifting book from an acclaimed Harvard Medical School scientist and one of Time’s most influential people. It’s a seemingly undeniable truth that aging is inevitable. But what if everything we’ve been taught to believe about aging is wrong? What if we could choose our lifespan? In this groundbreaking book, Dr. David Sinclair, leading world authority on genetics and longevity, reveals a bold new theory for why we age. As he writes: “Aging is a disease, and that disease is treatable.” This eye-opening and provocative work takes us to the frontlines of research that is pushing the boundaries on our perceived scientific limitations, revealing incredible breakthroughs—many from Dr. David Sinclair’s own lab at Harvard—that demonstrate how we can slow down, or even reverse, aging. The key is activating newly discovered vitality genes, the descendants of an ancient genetic survival circuit that is both the cause of aging and the key to reversing it. Recent experiments in genetic reprogramming suggest that in the near future we may not just be able to feel younger, but actually become younger. Through a page-turning narrative, Dr. Sinclair invites you into the process of scientific discovery and reveals the emerging technologies and simple lifestyle changes—such as intermittent fasting, cold exposure, exercising with the right intensity, and eating less meat—that have been shown to help us live younger and healthier for longer. At once a roadmap for taking charge of our own health destiny and a bold new vision for the future of humankind, Lifespan will forever change the way we think about why we age and what we can do about it.
Author : Royal Society of Chemistry (Great Britain) Publisher : Royal Society of Chemistry Page : 18 pages File Size : 51,5 Mb Release : 1999 Category : Education ISBN : 9780854049455
Age Determination of Young Rocks and Artifacts by Günther A. Wagner Pdf
Dating the Quaternary, which covers approximately the last 2 million years, has experienced considerable progress over the past few decades. On the one hand, this resulted from the necessity to obtain a valid age concept for this period which had seen tremendous environmental changes and the advent of the genus Homo. On the other hand, instrumental improvements, such as the introduction of highly sensitive analytical techniques, gave rise to physical and chemical innovations in the field of dating. This rapid methodological development is still in full progress. The broad spectrum of chronometric methods applicable to young rocks and artifacts also becomes increasingly intricate to the specialist. Hence, it is my goal to present a comprehensive, state-of-the-art sum mary of these methods. This book is essentially designed as an aid for scientists who feel a demand for dating tasks falling into this period, i. e., Quaternary geologists and archaeologists in the broadest sense. Since it has been developed from a course of lectures for students of geological and archaeological sciences, held at the University of Heidelberg, it certainly shall serve as an introduction for students of these disciplines.
The Chemical Age Chemical Dictionary by Anonim Pdf
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