Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Revue Des Proprietes Magnetiques Et Electroniques Des Composes Des Terres Rares Avec Les Anions Du 5me Groupe Du Systeme Periodique
Download Revue Des Proprietes Magnetiques Et Electroniques Des Composes Des Terres Rares Avec Les Anions Du 5me Groupe Du Systeme Periodique full books in PDF, epub, and Kindle. Read online Revue Des Proprietes Magnetiques Et Electroniques Des Composes Des Terres Rares Avec Les Anions Du 5me Groupe Du Systeme Periodique ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit by : Stuart Hill
Download or read book Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit written by Stuart Hill and published by Birkhäuser. This book was released on 2013-12-14 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quaternary Vegetation Dynamics by : Jürgen Runge
Download or read book Quaternary Vegetation Dynamics written by Jürgen Runge and published by CRC Press. This book was released on 2021-11-28 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book celebrates the relaunch of the African Pollen Database, presents state-of-the-art of modern and ancient pollen data from sub-Saharan Africa, and promotes Open Access science. Pollen grains are powerful tools for the study of past vegetation dynamics because they preserve well within sedimentary deposits and have a huge diversity in ornamentation that allows different taxa to be determined. The reconstruction of past vegetation from the examination of ancient pollen records thus can be used to characterize the nature of past landscapes (e.g. abundance of forests vs. grasslands), provide insights into changes in biodiversity, and gain empirical evidence of vegetation response to climatic change and human activity. In this, the 35th Volume of "Palaeoecology of Africa", we bring together new data and extensive synthetic reviews to provide novel insights into the relationships between human evolution, human activity, climate change and vegetation dynamics during the Quaternary, the last 2.6 million years. Current and ongoing climate and land-use change is exerting pressure on modern vegetation formations and threatening the livelihoods and wellbeing of many peoples in Africa. In this book the focus is on the Quaternary because it is during this geological period that the modern vegetation formations developed into their current configurations against a backdrop of high magnitude global climate change (glacial-interglacial cycles), human evolution, and a growing human land-use footprint. In this book the latest information is presented and collated from around the African continent to parameterize past vegetation states, identify the drivers of vegetation change, and assess the vegetation resilience to change. To achieve this research from two broad themes are covered: (i) the present is the key to the past (i.e. studies which improve our understanding of modern environments so that we can better interpret evidence from the past), and (ii) the past is the key to the future (i.e. studies which unlock information on how and why vegetation changed in the past so one can better anticipate trajectories of future change). This Open Access book will provide a strong foundation for future research exploring past ecological, environmental and climatic change within Africa and the surrounding islands. The book is organized regionally (covering western, eastern, central, and southern Africa) and it contains specialized articles focused on particular topics (such as modern pollen-vegetation relationships and fire as a driver of vegetation change), as well as regional and pan-African syntheses drawing together decades of research to assess key scientific questions (including the role of climate in driving vegetation change and the role of vegetation change in human evolution). These articles will be useful to students and teachers from high school to the highest level of university who are interested in the origins and dynamics of vegetation in Africa. Furthermore, it is also meant to provide societally relevant information that can act as an inspiration for the development of sustainable management practices for the future.
Book Synopsis Perspectives for Agroecosystem Management: by : Peter Schroder
Download or read book Perspectives for Agroecosystem Management: written by Peter Schroder and published by Elsevier. This book was released on 2011-08-19 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable agriculture is a key concept for scientists, researchers, and agricultural engineers alike. This book focuses on the FAM- project (FAM Munich Research Network on Agroecosystems) of the 1990s as a means to assessing, forecasting, and evaluating changes in the agroecosystems that are necessary for agricultural sustainability. The management of two separate management systems: an organic and an integrated farming system are described to provide an interdisciplinary approach Changes of matter fluxes in soils, changes of trace gas fluxes from soils, precision farming in a small scale heterogen landscape, influence of management changes on flora and fauna, as well as the development of agroecosystem models, the assessment of soil variability and the changes in nutrient status are important aspects of this book.* Contains detailed results and insight of a long-time project on agricultural sustainability* Provides an interdisciplinary approach for comprehensive understanding by scientists and researchers of soil, plants, agriculture, and environment * Includes an international perspective
Book Synopsis Etude des propriétés cristallochimiques et physiques (luminescence, RMN, conductivité ionique) de phosphates condensés de terres rares by : Mokhtar Férid
Download or read book Etude des propriétés cristallochimiques et physiques (luminescence, RMN, conductivité ionique) de phosphates condensés de terres rares written by Mokhtar Férid and published by Editions Publibook. This book was released on 2006 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Depuis l'avènement de la découverte de l'effet laser dans un phosphate condensé concentré en néodyme, la course vers les composés phosphatés de terres rares est lancée à travers les laboratoires de recherche dans le monde ; le but étant toujours le même, trouver le meilleur candidat pour des applications optiques diverses, tout en balayant le domaine des longueurs d'onde de l'ultraviolet à l'infrarouge, d'autant plus que la richesse spectroscopique des éléments de terres rares est immense. C'est dans ce cadre que ce livre participe à cette course par la recherche de nouvelles architectures cristallographiques où l'élément optiquement actif qu'est le cation terre rare possède avec les atomes voisins des géométries et des symétries très variables. Les composés synthétisés sous forme de monocristaux présentent des degrés de polymérisation de 2, 3, 4 tétraèdres de phosphate jusqu'à des chaînes infinies, conférant à ces phosphates une stabilité chimique extraordinaire. Cet ouvrage, de par la nouveauté des structures cristallines et les propriétés de conduction électrique et de résonance magnétique nucléaire qu'il présente, regroupe des composés ayant des formulations présentées pour la première fois dans ce domaine.
Book Synopsis Propriétés magnétiques des composés T2Co17 entre les métaux de terres rares et le cobalt et de quelques alliages du nickel avec le fer ou le cobalt by : Jean Laforest (physicien).)
Download or read book Propriétés magnétiques des composés T2Co17 entre les métaux de terres rares et le cobalt et de quelques alliages du nickel avec le fer ou le cobalt written by Jean Laforest (physicien).) and published by . This book was released on 1967 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthèse, structures et propriétés magnétiques de nouveaux silicates et germanates de manganèse et de terres rares by : Christine Gueho
Download or read book Synthèse, structures et propriétés magnétiques de nouveaux silicates et germanates de manganèse et de terres rares written by Christine Gueho and published by . This book was released on 1995 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rare Earth Materials written by A.R. Jha and published by CRC Press. This book was released on 2014-06-17 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies indicate that China accounts for about 96 percent of the world’s supply of rare earth materials (REMs). With REMs becoming increasingly important for a growing number of high-tech applications, appropriate action must be taken to mitigate the effects of a shortage of critical REMs in defense systems and components. Bringing together information previously available only from disparate journal articles and databases, Rare Earth Materials: Properties and Applications describes the unique characteristics and applications of 17 REMs. It defines their chemical, electrical, thermal, and optical characteristics. Maintaining a focus on physical and chemical properties, it addresses the history and critical issues pertaining to mining and processing of REMs. In this book, Dr. A.R. Jha continues his distinguished track record of distilling complex theoretical physical concepts into an understandable technical framework that can be extended to practical applications across commercial and industrial frameworks. He summarizes the chemical, optical, electrical, thermal, magnetic, and spectroscopic properties of REMs best suited for next-generation commercial and military systems or equipment. Coverage includes extraction, recycling, refinement, visual inspection, identification of spectroscopic parameters, quality control, element separation based on specific application, pricing control, and environmental / geo-political considerations. Potential applications are identified with an emphasis on scientific instruments, nuclear resonance imaging equipment, MRI systems, magnetic couplers for uranium enrichment equipment, battery-electrodes, electric motors, electric generators, underwater sensors, and commercial and military sensors. The book describes unique applications of rare earth magnets in all-electric and hybrid electric cars and microwave components. It also considers the use of rare earth magnets in commercial and military systems where weight and size are the critical design requirements. Suitable for both students and design engineers involved in the development of high-technology components or systems, the book concludes by summarizing future applications in electro-optic systems and components, including infrared lasers, diode-pumped solid-state lasers operating at room temperatures, and other sophisticated military and commercial test equipment
Book Synopsis Magnetic Properties of Rare Earth Metals by : R. Elliott
Download or read book Magnetic Properties of Rare Earth Metals written by R. Elliott and published by Springer. This book was released on 1972-12-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rare earths have a unique place among the elements. Although very much alike chemically and in most phy~ical properties they each have very different and striking magnetic properties. The reason, of course, lies in their 4f electrons which determine the magnetic properties but have little effect on other chemical and physical behaviour. Although they are not rare, some indeed are among the more common heavy elements in the earth's crust, the difficulty of separation has meant that their intricate magnetic properties have only recently been unravelled. Now, however, the general pattern of their magnetism is well charted and the underlying theory is well understood. Both are thoroughly summarised in this book. It provides an excellent example of the kind of extensive synthesis which is possible with modem solid state physics. it represents only a high plateau in the ascent to complete understanding. But It will become clear to the reader that while the overall position is satisfactory there are many details still to be elucidated experimentally and much to be done theoretically before all the underlying forces are identified and estimated from a priori calculations. It is hoped that the book will provide a useful stimulus in this direction. It should also be of use to those who are interested in related disciplines, for example the rare earth compounds, or the transition metals. In addition rare earths promise to be important technologically as alloy constituents.
Book Synopsis Les éléments des terres rares by : Jean Flahaut
Download or read book Les éléments des terres rares written by Jean Flahaut and published by . This book was released on 1969 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Propriétés magnétiques générales de divers composés des éléments du groupe du fer by : Jean Becquerel
Download or read book Propriétés magnétiques générales de divers composés des éléments du groupe du fer written by Jean Becquerel and published by FeniXX. This book was released on 1947-01-01T00:00:00+01:00 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cet ouvrage est une réédition numérique d’un livre paru au XXe siècle, désormais indisponible dans son format d’origine.
Book Synopsis Compounds of Rare Earth Elements with Main Group Elements / Verbindungen der seltenen Erden mit Elementen der Hauptgruppen 1 by : T. Kaneko
Download or read book Compounds of Rare Earth Elements with Main Group Elements / Verbindungen der seltenen Erden mit Elementen der Hauptgruppen 1 written by T. Kaneko and published by Springer. This book was released on 1990-02-27 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 19 of Group III (Crystal and Solid State Physics) deals with the magnetic properties of metals, alloys and metallic compounds. The amount available of information in this field is so substantial that several subvolumes are needed to cover it all. Subvolumes III/19a through III/19f treat the intrinsic magnetic properties, i.e. those magnetic properties which depend only on the chemical composition and the crystal structure. So far, subvolumes III/19a, III/19b and III/19c have appeared. Subvolume III/19e is concerned with the magnetic data of the metallic compounds of rare earth elements with main group elements. It is divided into two parts. Part III/19e2 came out last year; part III/19e1 is presented herewith. Data on the properties that depend on the preparation of the samples measured, as for instance, thin films, amorphous alloys or the magnetic alloys used in technical applications, are being compiled in the last subvolumes of III/19: III/19g and III/19h, of which III/19g has already appeared.
Download or read book Rare Earth Materials written by A. R. Jha and published by . This book was released on 2014-01-01 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies indicate that China accounts for about 96 percent of the world s supply of rare earth materials (REMs). With REMs becoming increasingly important for a growing number of high-tech applications, appropriate action must be taken to mitigate the effects of a shortage of critical REMs in defense systems and components. Bringing together information previously available only from disparate journal articles and databases, Rare Earth Materials: Properties and Applications describes the unique characteristics and applications of 17 REMs. It defines their chemical, electrical, thermal, and optical characteristics. Maintaining a focus on physical and chemical properties, it addresses the history and critical issues pertaining to mining and processing of REMs. In this book, Dr. A.R. Jha continues his distinguished track record of distilling complex theoretical physical concepts into an understandable technical framework that can be extended to practical applications across commercial and industrial frameworks. He summarizes the chemical, optical, electrical, thermal, magnetic, and spectroscopic properties of REMs best suited for next-generation commercial and military systems or equipment. Coverage includes extraction, recycling, refinement, visual inspection, identification of spectroscopic parameters, quality control, element separation based on specific application, pricing control, and environmental / geo-political considerations. Potential applications are identified with an emphasis on scientific instruments, nuclear resonance imaging equipment, MRI systems, magnetic couplers for uranium enrichment equipment, battery-electrodes, electric motors, electric generators, underwater sensors, and commercial and military sensors. The book describes unique applications of rare earth magnets in all-electric and hybrid electric cars and microwave components. It also considers the use of rare earth magnets in commercial and military systems where weight and size are the critical design requirements. Suitable for both students and design engineers involved in the development of high-technology components or systems, the book concludes by summarizing future applications in electro-optic systems and components, including infrared lasers, diode-pumped solid-state lasers operating at room temperatures, and other sophisticated military and commercial test equipment"
Book Synopsis Rare-Earths and Actinides in High Energy Spectroscopy by : Christiane Bonnelle
Download or read book Rare-Earths and Actinides in High Energy Spectroscopy written by Christiane Bonnelle and published by Springer. This book was released on 2015-12-22 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique monograph covers recent theoretical and experimental results on the complex character of f electrons in materials containing lanthanides (rare earths) or actinides, such as alpha-cerium and delta-plutonium. It answers the urgent need for a general presentation of the body of experimental and theoretical results presently available in this challenging domain. Some of the fast developing applications of lanthanide and actinide materials are mentioned. Materials containing atoms with an open f shell have electronic and crystalline properties that are controlled by the localized or delocalized character of the f electrons. This book gives a theoretical discussion of the various spectroscopic methods that shed light on the character of the f electrons and on the connection between their localization and the properties of these materials. Part 1 covers the characteristics of the f electrons in atoms and solids and includes a discussion of the properties of lanthanides and actinides in connection with the f electrons. Part 2 describes the various spectroscopic methods that are used to establish the electronic distributions and energies of the states. Examples involve the determination of f electron distributions by high energy spectroscopy methods with separate treatment of the valence and core electrons. Part 3 concentrates on the theoretical treatment of electronic transitions involving f electrons and simulations of the lanthanide spectra, including comparison with the available experimental data. Part 4 discusses the localized or delocalized character of the f electrons in actinides and their compounds, including comparison (analogies & differences) between the 4f and 5f electron materials. This monograph should be of great value for researchers, academics and engineers working in the fields of high energy spectroscopy, electronic and nuclear science and technology, as well as materials involving rare earths and radio-elements.
Book Synopsis Handbook of Crystal Structures and Magnetic Properties of Rare Earth Intermetallics by : Andrej Szytula
Download or read book Handbook of Crystal Structures and Magnetic Properties of Rare Earth Intermetallics written by Andrej Szytula and published by CRC Press. This book was released on 1994-03-08 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rare-earth intermetallics, also known as lanthanide elements, play an important role in the study of magnetic materials and the development of semi- and super-conducting materials. This handbook provides an up-to-date compilation of crystallographic, physical, and magnetic data on rare-earth intermetallic compounds. Over 20 different structure types are described in detail with an emphasis on how crystal structure can affect magnetic properties. Theoretical models for magnetic interactions are described as well as the impact of crystal electric fields on transport properties, magneto crystalline anistropy and hyperfine interactions. This book provides materials scientists, engineers and physicists with all the critical information needed to use rare-earth intermetallics effectively in the development of new materials.
Book Synopsis Rare Earth Element by : Jose Edgar Alfonso Orjuela
Download or read book Rare Earth Element written by Jose Edgar Alfonso Orjuela and published by BoD – Books on Demand. This book was released on 2017-07-26 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rare earth elements have significant physical and chemical properties, which have been made indispensable in many magnetic, electronic, and optical applications. For instance, rare earth magnets have high magnetic intensity that can be retained at high temperatures, making them ideal for aerospace applications. Moreover, rare earth elements allow to fabricate faster, smaller, and lighter devices such as cell phones and hard drives. They are also important for in-ear headphones, microphones, loudspeakers, optical fibers, smartphones, and tablet computers. All these technological possibilities have made sure that the rare earth elements are part of the daily life. Therefore, this book has a main objective to let the readers know useful information about the rare earth elements that possibly allow development of the researches in different fields of science where the rare earth elements are used.
Book Synopsis Rare Earth Alloys by : Karl A. Gschneidner
Download or read book Rare Earth Alloys written by Karl A. Gschneidner and published by . This book was released on 1961 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rare Earths-Transition Metals-Boron Compounds by : Emil Burzo
Download or read book Rare Earths-Transition Metals-Boron Compounds written by Emil Burzo and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents advances in the field of rare-earth (R) - transition metal (M) - boron compounds with extensive references. Since titanium and scandium do not form compounds with rare-earths, the Sc/Ti-M-B series are additionally presented. In each chapter the crystal structures, the complex physical properties as determined from neutron diffraction, magnetic measurements, resonance studies, transport properties and band structure calculations are critical analyzed. The models used in describing the experimental evidence are also presented. Tables with the main properties of the R-M-B compounds are given and representative data are illustrated in figures. In this way, the book provides state-of-the art knowledge and a valuable analysis of up-to-date results in the field. The technical applications, as permanent magnets, thermoelectric and magnetocaloric devices, hydrogen storage are also highlighted along with the authors insights into future directions in the field. The book is of interest for scientists involved in the development of the field as well as those working in the technical uses of rare-earth compounds.
