The present volume describes the general properties of the thorium atom and ions, the thermodynamics of its compounds and solutions, the behavior of solutions and solid com pounds under the influence of its own radiation as well as an external radiation field, and spectroscopic data in great detail. The different chapters are of special interest to scientists who work in these fields, and also in the corresponding fields of other elements. In some special fields there exists a detailed knowledge of this radioelement whereas in other fields, such as M6Bbauer spectra, lower oxidation states, or radiation stability, there are large gaps. Due to the fact that the significance 23 of thorium as a breeder fuel ( 2"fh to be converted to fissile 233U after thermal neutron capture) has decreased within the last decade, the behavior of thorium is not as yet so thoroughly investigated as the heavier radioactive element uranium. Many of these data, however, are not only of academic interest, e.g., the knowledge of atomic spectra is needed for some analytical methods, especially in the trace concentration region. Due to the noble gaS-like electronic configuration of the tetravalent ion, there are no absorption bands in the visible region so that in general spectra and data are very scarce. This volume is a very detailed and critically reviewed compilation, written by experts from the Federal Republic of Germany, Belgium, and the United States.
This volume comprises the compounds of thorium with the 4th main group elements silicon and germanium and all 5th main group elements except nitrogen. On the subject of ternary and polynary compounds containing oxygen, only those compounds with phosphorus are included (e.g., phosphates, hypophosphates, or phosphinates). Similar compounds of the other ele ments like silicates, arsenates, etc. were already treated in "Thorium" Suppl. Vol. C 2, 1976. Most of the compounds in the different systems treated in this volume are of scientific interest because of their special physical and chemical properties. On the other hand, there are also many compounds wh ich are of specific technological interest, mainly in the nuclear field. Refractory compounds like ThSi or ThP have potential interest as nuclear fuel for special reactors due to their physical properties like good heat conductivity and their chemical stability, e.g., against the corrosion of cladding alloys for nuclear fuel elements. Due to the present situation in the further development of the thorium nuclear fuel cycle, their large potential has not yet been fully investigated. For most of the binary and ternary phases in these systems, we presently have good knowledge about the preparation of the compounds and their physical and chemical properties. But nevertheless, there are still a lot of open questions concerning phase equilibria, solid solutions, and homogeneity of some of the phases described in this volume.
This volume covers binary alloys and intermetallic compounds of uranium with transition metals of the Cu, Zn, Sc (including the lanthanides), and Ti groups as well as ternary alloys containing another transition metal as a third component. The compounds UCu5, UAu2, U14Au51, U2Zn17, UZn12, and UCd11 have been shown to be heavy-fermion materials exhibiting unusual behavior as far as the heat capacity and the magnetic and electrical properties at low temperatures are concerned. The alloys of uranium with titanium and zirconium and related ternary alloys are of technological interest. Thus emphasis in this volume is placed on recent scientific as well as technological work.
While there have been tremendous advances in our scientific understanding of the brain, this work has been largely academic, and often oriented toward clinical publication. Cognitive Neuroscience of Human Systems: Work and Everyday Life addresses the relationship between neurophysiological processes and the performance and experience of humans in everyday life. It samples the vast neuroscience literature to identify those areas of research that speak directly to the performance and experience of humans in everyday settings, highlighting the practical, everyday application of brain science. The book explains the underlying basis for well-established principles from human factors, ergonomics, and industrial engineering and design. It also sheds new light on factors affecting human performance and behavior. This is not an academic treatment of neuroscience, but rather a translation that makes modern brain science accessible and easily applicable to systems design, education and training, and the development of policies and practices. The authors supply clear and direct guidance on the applications of principles from brain science to everyday problems. With discussions of topics from brain science and their relevance to everyday activities, the book focuses on the science, describing the findings and the studies producing these findings. It then decodes how these findings relate to everyday life and how you can integrate them into your work to achieve more effective outcomes based on a fundamental understanding of how the operations of the human brain produce behavior and modulate performance.
Heteroepitaxial films are commonplace among today's electronic and photonic devices. The realization of new and better devices relies on the refinement of epitaxial techniques and improved understanding of the physics underlying epitaxial growth. This book provides an up-to-date report on a wide range of materials systems. The first half reviews metallic and dielectric thin films, including chapters on metals, rare earths, metal-oxide layers, fluorides, and high-c superconductors. The second half covers semiconductor systems, reviewing developments in group-IV, arsenide, phosphide, antimonide, nitride, II-VI and IV-VI heteroepitaxy. Topics important to several systems are covered in chapters on atomic processes, ordering and growth dynamics.
The fourth edition of The Cognitive Neurosciences continues to chart new directions in the study of the biologic underpinnings of complex cognition - the relationship between the structural and physiological mechanisms of the nervous system and the psychological reality of the mind. The material in this edition is entirely new, with all chapters written specifically for it." --Book Jacket.
Recent sociopolitical events have profoundly changed the status and functions of German and influenced its usage. In this study (published by Cambridge in 1984) Michael Clyne revises and expands his original analysis of the German language in Language and Society in the German-speaking Countries in the light of such changes as the end of the Cold War, German unification, the redrawing of the map of Europe, increasing European integration, and the changing self-images of Austria, Switzerland and Luxembourg. His discussion includes the differences in the form, function and status of the various national varieties of German; the relation between standard and non-standard varieties; gender, generational and political variation; Anglo-American influence on German; and the convergence of east and west. The result is a wide-ranging exploration of language and society in the German-speaking countries, all of which have problems or dilemmas concerning nationhood or ethnicity which are language-related and/or language-marked.
Over 90% of the brain is concerned with higher cortical functions, yet understanding of syndromes, functions, and measurements remains unchartered. This valuable handbook illuminates brain function, natural environment and human function, by delving into the interdisciplinary study. Multifaceted in its perspective, this book demonstrates bi-directionality of information exchange between disciplines. This book weaves around key case reports, series, control studies and cohort studies from cognitive neurology registries, to present the most current, practical research. Gaining appreciation for the fundamental formation and assembly of the supervisory area of the brain will inform an understanding of conditions and behavior for neuroscience professionals, clinical brain scientists and medical students in neuroscience, worldwide. Authored by a leading expert in cognitive neurology, this book guides the reader through the evolutionary, or neuro-archeological, aspects of how the frontal lobes and their circuitry were assembled, drawing key insights into form, function and treatment.
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