Fundamental Physics of Radiology focuses on how radiation is produced, how the rays interact and affect irradiated material, and the principles underlying the apparatus being used. The publication first takes a look at matter and energy, radiation, and spectra, atoms and nuclei, and radioactivity, including electromagnetic radiation, waves and photons, atomic and nuclear structures, and electromagnetic spectrum. The text also ponders on radioactive materials and the effects and production of X-rays. The text examines the measurement of X-ray quantity, roentgen and its measurement, and the Geiger-Müller and scintillation counters, as well as departmental chambers, instruments in practice, and 'free-air' chamber. The manuscript also elaborates on properties of X-ray film, intensifying and fluorescent screens, effect of X-ray absorption on radiographic image, and effects and control of scattered radiation. The publication is a dependable reference for physicists and readers interested in radiology.
The last 50 years have witnessed a rapid growth in the understanding of the articulation and the acoustics of vowels. Contemporary theories of speech perception have concentrated on consonant perception, and this volume is intended as a balance to such bias. The authors propose a computational theory of auditory vowel perception, accounting for vowel identification in the face of acoustic differences between speakers and speaking rate and stress. This work lays the foundation for future experimental and computational studies of vowel perception.
A comprehensive account of Polychaetes in Australia. Based on nearly 2400 references, the authors reveal the wealth of diversity in the largely unknown world of these worm groups, in terms of their morphology, behaviour, reproduction and significance in marine ecosystems.
This comprehensive text covers the basic physics of the solid state starting at an elementary level suitable for undergraduates but then advancing, in stages, to a graduate and advanced graduate level. In addition to treating the fundamental elastic, electrical, thermal, magnetic, structural, electronic, transport, optical, mechanical and compositional properties, we also discuss topics like superfluidity and superconductivity along with special topics such as strongly correlated systems, high-temperature superconductors, the quantum Hall effects, and graphene. Particular emphasis is given to so-called first principles calculations utilizing modern density functional theory which for many systems now allow accurate calculations of the electronic, magnetic, and thermal properties.
Dealing with analytical and semi-analytical methods in engineering and sciences, this book draws upon results and methods of mathematical physics and systematically develops solution methods for ordinary and partial differential equations encountered in different engineering disciplines and sciences.
Covers the theory of electromagnetic fields in matter, and the theory of the macroscopic electric and magnetic properties of matter. There is a considerable amount of new material particularly on the theory of the magnetic properties of matter and the theory of optical phenomena with new chapters on spatial dispersion and non-linear optics. The chapters on ferromagnetism and antiferromagnetism and on magnetohydrodynamics have been substantially enlarged and eight other chapters have additional sections.
Flavonoids are a group of natural products isolated from a wide variety of plants, and are responsible for much of the coloring found in vascular plants. They exhibit a wide range of biological activities and are of particular interest as potential anti-cancer agents, as insect antifeedants, and as natural insecticides. The Flavonoids: Advances in Research Since 1986 is a self-contained account of this important group of plant products.
This book is an outgrowth of my interest in the chemistry of sedimentary rocks. In teaching geochemistry, I realized that the best examples for many chemical processes are drawn from the study of ore deposits. Consequently, we initiated a course at The University of Cincinnati entitled "Sedimentary Ore Deposits," which serves as the final quarter course for both our sedimentary petrology and our ore deposits sequence, and this book is based on that teaching experience. Because of my orientation, the treatment given is perhaps more sedimentological than is usually found in books on ore deposits, but I hope that this proves to be an advantage. It will also be obvious that I have drawn heavily on the ideas and techniques of Robert Garrels. A number of people have helped with the creation of this book. I am especially grateful to my students and colleagues at Cincinnati and The Memorial University of Newfoundland for suffering through preliminary versions in my courses. I particularly thank Bill Jenks, Malcolm Annis, and Dave Strong. For help with field work I thank A. Hallam, R. Hiscott, J. Hudson, R. Kepferle, P. O'Kita, A. Robertson, C. Stone, and R. Stevens. I am also deeply indebted to Bob Stevens for many hours of insightful discussion.
A main selection of Scientific American Book Club Magnetic fields permeate our vast universe, urging electrically charged particles on their courses, powering solar and stellar flares, and focusing the intense activity of pulsars and neutron stars. Magnetic fields are found in every corner of the cosmos. For decades, astrophysicists have identified them by their effects on visible light, radio waves, and x-rays. J. B. Zirker summarizes our deep knowledge of magnetism, pointing to what is yet unknown about its astrophysical applications. In clear, nonmathematical prose, Zirker follows the trail of magnetic exploration from the auroral belts of Earth to the farthest reaches of space. He guides readers on a fascinating journey of discovery to understand how magnetic forces are created and how they shape the universe. He provides the historical background needed to appreciate exciting new research by introducing readers to the great scientists who have studied magnetic fields. Students and amateur astronomers alike will appreciate the readable prose and comprehensive coverage of The Magnetic Universe.
Maintaining a building is expensive: it costs many times more to run a building than to build it, yet maintenance is often accorded a low priority. Building Maintenance covers the technical aspects of maintenance for undergraduate students on built environment courses, particularly building surveying and facilities management. It addresses the major questions regarding maintenance activities and shows that maintenance should be considered seriously at the design stage. Extensive case studies illustrate what can go wrong, how to put matters right and how to get it right first time.
One of the most recent and exciting branches of astronomy, helioseismology—like its terrestrial counterpart—studies why the surface of the sun vibrates like a bell. Over the past three decades astronomers have gained spectacular insights into the structure and composition of the sun's interior, transforming the way we understand stellar matter. In Sunquakes, Jack B. Zirker tells the story of this new science and explains the physics behind these illuminating vibrations. Zirker recounts the discovery of solar oscillations in the early 1960s and international efforts throughout the rest of the decade to explain this phenomenon. By the mid-1970s, scientists working independently in France, Germany, Japan, and the U.S. had developed a new theoretical model of the sun that postulated the existence of trapped sound and gravity waves as the cause for the roiling of the sun's surface. Using solar oscillation data, scientists derived for the first time the thermal and dynamic properties of the solar interior and revealed its complicated rotation patterns; even such astronomical mysteries as the deficit of solar neutrinos were solved. Describing the competition and cooperation between astronomers, particle physicists, and other theorists to the technological innovations that makes solar observation more and more precise, Sunquakes provides professionals and nonscientists alike with an absorbing and accessible guide to the field of helioseismology. The book concludes with an account of recent efforts to probe the interiors of stars far beyond our own solar system.
This book is about how electronics, computing, and telecommunications have profoundly changed our lives – the way we work, live, and play. It covers a myriad of topics from the invention of the fundamental devices, and integrated circuits, through radio and television, to computers, mobile telephones and GPS. Today our lives are ruled by electronics as they control the home and computers dominate the workspace. We walk around with mobile phones and communicate by email. Electronics didn’t exist until into the twentieth century. The industrial revolution is the term usually applied to the coming of steam, railways and the factory system. In the twentieth century, it is electronics that has changed the way we gather our information, entertain ourselves, communicate and work. This book demonstrates that this is, in fact, another revolution.
The Leaning Tower of Pisa is known worldwide for its five-degree lean. The Tower is the Campanile of the Cathedral, which together with the Baptistry and Cemetery form a breath-taking collection of monuments which are regarded as supreme examples of early Renaissance Romanesque architecture. In March 1990 the Tower was closed to the public as it was declared unsafe and close to collapse. A Commission was set up by the Italian Government with the task of developing and implementing stabilization measures. This book begins with a brief description of the history of the Tower and its construction. The reader is then introduced to the huge challenges faced by the Commission in designing and implementing appropriate stabilization measures whilst at the same time satisfying the demanding requirements of conserving a world heritage monument. In particular, two historical studies are described which proved to be most valuable in arriving at suitable stabilization measures. The first was a deduction of the history of inclination of the tower during and subsequent to construction. The results of this study were used to calibrate a sophisticated numerical model of the tower and the underlying very soft ground which proved vital in evaluating the effectiveness of various stabilization schemes. The second study was of measurements of movement made since 1911. This latter study revealed an unexpected mechanism of foundation movement which proved crucial in developing the temporary and permanent stabilization measures and which resulted in the Tower being re-opened to the public in June 2001. The book will appeal to both professionals and students in the fields of Architecture and Civil Engineering. It will also interest specialised audiences of geotechnical engineers and conservation architects. It may also be of wider interest to anyone planning to visit Pisa or who is intrigued as to what caused the Tower to lean and how it was stabilized.
The most complete treatise on sleight-of-hand coin conjuring, including best traditional methods and modern innovations. Guides you systematically from basic techniques, through integrated tricks to complete acts, 18 in all. 510 clear illustrations.
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