Hermann Joseph Muller (1890-1967) was a member of the early genetics group at Columbia University that developed the chromosome theory of inheritance. T. H. Morgan received the Nobel Prize in Medicine and Physiology for this work in 1934, and Muller, his student, received the Nobel Prize in 1946 for his discovery of radiation-induced mutation. The Modern Concept of Nature: Essays on Theoretical Biology by H. J. Muller, deals with Muller's major contributions to the theory of the gene, the induction of mutations, the principles of genetic load, and the neo-Darwinian theory of evolution. These essays contributed to the modern outlook of biology, and they are important to the historian and the biologist who wish to trace the evolution of scientific concepts or to read, first hand, the papers which laid the basis for the major portion of our genetic knowledge. Muller's writings extended beyond contributions to technical journals. He was an active critic of social abuse of science; he advocated eugenic programs based on free choice; and he played a major role in the reform of high school biology. Muller's social views were published in magazines and journals which are accessible to scholars more than to the lay reader or student. They have been collected in a companion volume, Man's Future Birthright: Essays in Science and Humanity by H. J. Muller, also published by State University of New York Press, to show how extensively he thought our lives are affected by radiation, evolution, modern medicine, and gene theory. He attempted to alert humanity to the dangers of neglect and abuse of their genetic heritage. He also used humanistic values to urge mankind to improve itself, to foster cooperativeness, to increase health and intelligence, and to adopt an evolutionary outlook. The relation of science to values is often neglected because of the inaccessibility of the written contributions of important scientists. To read Muller's major essays in these two areas is an important way to evaluate a scientist's career, his maturation of ideas, and his developing application of science to society.
In Citizens in a Strange Land, Hermann Wellenreuther examines the broadsides—printed single sheets—produced by the Pennsylvania German community. These broadsides covered topics ranging from local controversies and politics to devotional poems and hymns. Each one is a product of and reaction to a particular historical setting. To understand them fully, Wellenreuther systematically reconstructs Pennsylvania’s print culture, the material conditions of life, the problems German settlers faced, the demands their communities made on the individual settlers, the complications to be overcome, and the needs to be satisfied. He shows how these broadsides provided advice, projections, and comment on phases of life from cradle to grave.
The most important work ever produced in the field of physiological optics, this classic is a model of scientific method and logical procedure, and it remains unmatched in its thorough and accessible approach. This is the third in a three-volume republication of the definitive English translation of Handbuch der Physiologischen Optik, originally published by The Optical Society of America in 1924 and containing everything that was known about physiological optics up until that time. The substratum consists of the data that Helmholtz furnished in the two nineteenth-century German editions that appeared during his lifetime. These volumes also contain extensive supplementary matter that Nagel, Gullstrand, and Kries incorporated in the third German edition of 1911, as well as significant new material prepared for the 1924 English translation by C. Ladd-Franklin, Gullstrand, and Kries, with copious annotations by James P. C. Southall that brought the work up to date with current research. Volumes I and II discuss the dioptrics of the eye and the sensations of vision;Volume III examines the perceptions of vision. Its topics include eye movements; the monocular field of vision; direction of vision; perception of depth; binocular vision; and many other highly important topics. Appendixes cover later findings on spatial configuration in vision and the theory of binocular instruments. Indexes for all three volumes are organized by subject and author.
This book provides a general introduction as well as a selected survey of key advances in the fascinating field of plant cell and tissue culture as a tool in biotechnology. After a detailed description of the various basic techniques employed in leading laboratories worldwide, follows an extended account of important applications in, for example, plant propagation, secondary metabolite production and gene technology. Additionally, some chapters are devoted to historical developments in this domain, metabolic aspects, nutrition, growth regulators, differentiation and the development of culture systems. The book will prove useful to both newcomers and specialists, and even “old hands” in tissue culture should find some challenging ideas to think about.
Hermann Joseph Muller (1890-1967) was a member of the early genetics group at Columbia University that developed the chromosome theory of inheritance. T. H. Morgan received the Nobel Prize in Medicine and Physiology for this work in 1934, and Muller, his student, received the Nobel Prize in 1946 for his discovery of radiation-induced mutation. Muller's writings extended beyond contributions to technical journals. He was an active critic of social abuse of science; he advocated eugenic programs based on free choice; and he played a major role in the reform of high school biology. Muller's social views were published in magazines and journals which are accessible to scholars more than to the lay reader or student. They have been collected here to show how extensively he thought our lives are affected by radiation, evolution, modern medicine, and gene theory. He attempted to alert humanity to the dangers of neglect and abuse of their genetic heritage. He also used humanistic values to urge mankind to improve itself, to foster cooperativeness, to increase health and intelligence, and to adopt and evolutionary outlook. A companion collection of essays, The Modern Concept of Nature: Essays on Theoretical Biology by H. J. Muller, also published by State University of New York Press, deals with Muller's scientific contributions to genetics and evolution. It was Muller who developed the relation between genes and mutation; his views on the primacy of the gene in biology are reflected today in the similar primacy of nucleic acids as the basis of life. For students of the history of ideas, a collection of these essays would illustrate how genetic thinking prepared the world view for molecular biologists. The relation of science to values is often neglected because of the inaccessibility of the written contributions of famous scientists. To read Muller's major essays in these two areas is an important way to evaluate a scientist's career, his maturation of ideas, and his developing application of science to society.
For 200 years industrial civilization has relied on the combustion of abundant and cheap carbon fuels. But continued reliance has had perilous consequences. On the one hand there is the insecurity of relying on the world's most unstable region - the Middle East - compounded by the imminence of peak oil, growing scarcity and mounting prices. On the other, the potentially cataclysmic consequences of continuing to burn fossil fuels, as the evidence of accelerating climate change shows. Yet there is a solution: to make the transition to renewable sources of energy and distributed, decentralized energy generation. It is a model that has been proven, technologically, commercially and politically, as Scheer comprehensively demonstrates here. The alternative of a return to nuclear power - again being widely advocated - he shows to be compromised and illusory. The advantages of renewable energy are so clear and so overwhelming that resistance to them needs diagnosis - which Scheer also provides, showing why and how entrenched interests and one-dimensional structures of thinking oppose the transition, and what must be done to overcome these obstacles. The new book from the award-winning author of THE SOLAR ECONOMY and A SOLAR MANIFESTO demonstrates why the transition to renewable energy is essential and how it can be done.
Hermann Joseph Muller (1890-1967) was a member of the early genetics group at Columbia University that developed the chromosome theory of inheritance. T. H. Morgan received the Nobel Prize in Medicine and Physiology for this work in 1934, and Muller, his student, received the Nobel Prize in 1946 for his discovery of radiation-induced mutation. Muller's writings extended beyond contributions to technical journals. He was an active critic of social abuse of science; he advocated eugenic programs based on free choice; and he played a major role in the reform of high school biology. Muller's social views were published in magazines and journals which are accessible to scholars more than to the lay reader or student. They have been collected here to show how extensively he thought our lives are affected by radiation, evolution, modern medicine, and gene theory. He attempted to alert humanity to the dangers of neglect and abuse of their genetic heritage. He also used humanistic values to urge mankind to improve itself, to foster cooperativeness, to increase health and intelligence, and to adopt and evolutionary outlook. A companion collection of essays, The Modern Concept of Nature: Essays on Theoretical Biology by H. J. Muller, also published by State University of New York Press, deals with Muller's scientific contributions to genetics and evolution. It was Muller who developed the relation between genes and mutation; his views on the primacy of the gene in biology are reflected today in the similar primacy of nucleic acids as the basis of life. For students of the history of ideas, a collection of these essays would illustrate how genetic thinking prepared the world view for molecular biologists. The relation of science to values is often neglected because of the inaccessibility of the written contributions of famous scientists. To read Muller's major essays in these two areas is an important way to evaluate a scientist's career, his maturation of ideas, and his developing application of science to society.
In the first part of this volume the nitrogen-containing compounds of molybdenum are described. The Mo-N system shows that M0 N and MoN are the stable nitrides. MOlybdenum 2 metal dissolves nitrogen to some extent but only at high temperatures. To get better insight into the reactions between nitrogen and molybdenum, the solubility, diffusion, adsorption and desorption phenomena, and ion bombardment are included in the section of the Mo-N system. M0 N has a large range of homogeneity toward lower nitrogen concentrations. The black 2 hexagonal MoN has only a narrow range of homogeneity. In addition some molybdenum compounds containing nitrogen and oxygen are known. The second part contains a full description of the compounds of molybdenum with fluorine. The fluorides MoF n with n ~ 2 are metastable while those with n = 3 to 6 are stable and have been observed in the Mo-F system. Pure MoF can exist without traces of oxygen, in co nt rast 3 to earlier assumptions. MoF was unambigously prepared and characterized in 1957. Its crystal 4 structure is still unknown. MoF is often contaminated with the oxide fluoride MoOF and it is s 4 difficult to remove. Even sm all amounts affect the properties of MoF . MoF , which is liquid at s 6 room temperature and solidifies to a "plastic" crystal modification below ca. 17SC, is the most investigated of all the molybdenum fluorides.
This book presents a comprehensive and detailed overview of indoor pollution, covering the main contaminants in the indoor environment – air and dust, the health aspects of exposure, and different possibilities for a risk assessment. The book outlines the chemical substances and physical and biological factors that occur more frequently indoors, which are of health significance, or for which only limited information on their occurrence indoors is available to date. It also provides guidance to identify where problems may arise in the future and where data is missing for a valid exposure and risk assessment as well as for consequent risk management. Written by a highly recognized and experienced medical expert in the field, the book starts with an introduction to the indoor environment, including topics such as indoor environmental quality and health, indoor climate, sampling of indoor pollutants, and measures to improve indoor air quality. The author then delves into the fundamentals of exposure assessment and special exposure indoor situations, followed by in-depth coverage of the health aspects, and indoor air occurrence of several substances such as volatile organic compounds, very volatile organic compounds, semi-volatile organic compounds, and particulate matters and fibers. Particular attention is given to bioaerosols like mold, microbial volatile organic compounds, mycotoxins, and viruses. Readers will also find chapters devoted to the main health aspects and indoor occurrence of inorganic gases, radon and metals, and smoking. The book closes with a chapter on risk assessment, in which readers will learn more about the basics of risk assessment, key points and processes of a health evaluation, and guidance for assessing indoor air contamination. This book is a unique compilation of the current worldwide exposure situation in private and public indoor spaces, and an important reference for researchers that are willing to assess the rising burden of disease and potential causes behind degraded indoor air quality. Scientists, students, and policymakers interested in the fields of medicine and environmental sciences will understand the appeal of this book.
This book includes four essays, each written by a German specialist, that discuss important problems of the German resistance with judgment and candor, offering the kind of interpretive judgment often lacking in other histories. Hermann Graml shows that as far as foreign policy, the resistance conservatives were never quite able to reconcile their hopes for a supranational solution in central Europe with their desire to fulfill traditional national aims from a position of German strength. Addressing the social policy of resisting groups, Hans Mommsen concludes that a central purpose was the "de-massing of the masses," while rejecting both communism and Western democracy. Hans-Joachim Reichhardt assesses the labor movement, wherein Communist leaders come out badly. Utterly failing to understand the threat of Hitler, they refused to join in efforts to thwart his coming to power. On the efforts of the religious, Ernst Wolf concludes, as have so many others, that the heroic resistance of individual Christians contrasts lamentably with the role played by organized Christianity. These thoughtful essays reinforce the impression gained in larger and more detailed studies: the resistance to Hitler's barbarism by decent German citizens was widespread, genuine--and tragically ineffective.
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