Download or read book Las tierras raras written by Ricardo Prego Reboredo and published by LOS LIBROS DE LA CATARATA. This book was released on 2019-03-12 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Los diecisiete elementos que componen las tierras raras empezaron a descubrirse a finales del siglo XVIII, pero no fue hasta después de la Segunda Guerra Mundial cuando se avanzó en sus aplicaciones. Ahora tenemos tierras raras en los billetes de euro para evitar falsificaciones y en los teléfonos móviles para que sean táctiles y emitan sonido y luz. En nuestra tecnificada cultura la lista de artículos que las contienen es muy extensa. Son indispensables para las tecnologías verdes, los coches híbridos y las turbinas eólicas; hacen posible imanes más potentes y de menor peso que permiten electrodomésticos cada vez más pequeños; se necesitan para fabricar gafas de visión nocturna, misiles crucero y otras armas... ¿Cómo ha avanzado nuestro conocimiento sobre las tierras raras hasta llegar a la gran dependencia actual? Esta obra aborda el camino seguido desde el desinteresado descubrimiento científico de algunas tierras raras en la mina del pueblo sueco de Ytterby hasta hoy en día, cuando se han convertido en costosos metales que son tecnológicamente críticos para nuestra sociedad.
Download or read book Tables for Emission Spectrographic Analysis of Rare Earth Elements written by Ch. Kerekes and published by Elsevier. This book was released on 2013-10-22 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlas and Tables for Emission Spectrographic Analysis of Rare Earth Elements focuses on the analysis of rare earths with the Zeiss Q 24 spectrograph or with instruments of similar dispersion. The book first offers information on the division of the spectra of rare earth elements and Sc and Y into three groups. The spectra of Ce, Pr, Nd, Gd, Tb, Dy, Ho, and Er have lines that, however, do not form characteristic line groups. The text underscores that in preparing the Atlas, the spectral pure-grade rare earth oxides sold by the Johnson & Matthey Co. were considered. Through the help of their spectra, the usable analysis lines and the wavelength values of the interfering spectral lines are created. The operating and photographic conditions are tabulated. The book stresses that for each rare earth, the analysis lines are provided in order of decreasing wavelength. The number located in the lower left corner for each analysis line indicates its relative intensity. The fifteen columns contain the interfering lines of other rare earths and of Sc and Y. The interfering lines are created through the use of the double projector of the Optica Milano Co. and the Gatterer Spectrum. The text is a great source of information for readers wanting to analyze rare earths with the Zeiss Q 24 spectrograph or with instruments of similar dispersion.
Download or read book The Rare Earths Era written by Juan Manuel Chomón and published by SCB Distributors. This book was released on 2020-01-01 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Rare Earths Era: Strategic Metals Dependency & World Order addresses the centrality of 17 rare metallic elements necessary to the manufacture of a vast panoply of products developed through modern technology and in use worldwide—from smartphones, televisions, computers, and medical scanners to components of the most modern weapons systems in Western arsenals. Rare earths are hence crucial to strategic planning, whether for business, combating climate change, warfare, or ascendancy in world order. Called “rare earths” because of the low concentration in which they are found, which makes their extraction polluting and difficult, the miraculous properties of these elements can endow other materials with an unalterable super magnetism, an amazing hardness or robustness, a unique luminescence or fluorescence, and a special conductivity. The world as we now experience, enjoy and understand it is absolutely dependent on access to these metals in order to produce today’s technology. Without that, it’s goodbye to modernity. Rare earths may be key to understanding some of the most pressing geopolitical issues of our time. This book addresses the following questions: * How did the world become so dependent and addicted to Chinese rare earth metals? * Will critical minerals provide China with geopolitical leverage? * How will the global needs for rare earths impact the transition to clean energy? * What is the environmental impact of rare earths? * What is the role of the strategic minerals in the de-dollarization process? * Will we see new wars over rare earths resources? * Are critical minerals really on the radar of Western politicians?
Download or read book North American Free Trade Agreement Texts of Agreement Implementing Bill Statement of Administrative Action and Required Supporting Statements written by United States. President (1993-2001 : Clinton) and published by . This book was released on 1993 with total page 2000 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 19th International Congress on Project Management and Engineering written by AEIPRO and published by Asociación Española de Dirección e Ingeniería de Proyectos (AEIPRO). This book was released on 2016-07-28 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Libro de resúmenes del XIX Congreso Internacional de Dirección e Ingeniería de Proyectos (CIDIP 2015) celebrado en Granada
Download or read book Peaceful Uses of Atomic Energy written by and published by . This book was released on 1965 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Desarrollo de nuevos m todos de extracci n en fase s lida para la preconcentraci n de metales traza en el agua de mar evaluaci n de un soporte de C 18 y de pol meros de impronta i nica Aplicaci n al estudio de la R a de Arousa written by and published by Univ Santiago de Compostela. This book was released on with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information Circular written by and published by . This book was released on 1935 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Investigations written by and published by . This book was released on 1959 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gondwana Industrial Clays written by Patricia Eugenia Zalba and published by Springer. This book was released on 2016-08-30 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a study of the sedimentary and residual deposits of the Tandilia System, also known as the Sierras Septentrionales of Buenos Aires, Argentina. Offering an overview of the geology, stratigraphy, petrology, mineralogy and industrial applications of these deposits, it is organized geographically and according to the different districts of the province’s diverse counties where economically important Neoproterozoic and Eopaleozoic clay reserves occur. Today, most of the sediments of the Tandilia basin are found in South Africa due to the breakup of the continents, which began in the Jurassic. This partly accounts for the difficulty in interpreting the geology of Tandilia. Apart from its extreme age and almost complete lack of fossil remains, for a long time the tectonics that affected the whole area presented a real challenge, as horst and graben structures added to the difficulty of geological correlations. Despite being 700 Ma old, most of the physical-chemical properties of the sediments have remained unchanged. The Microbially Induced Sedimentary Structures (MISS) found in the tidal and peritidal deposits also hold untouched information on the mystery of the beginning of life on earth. The fact that the Buenos Aires province is the country’s first non-metallic productive center together with the high quality of its clay deposits, its easy access from main routes and proximity to large consumer centers have made these materials highly important in the province’s construction industry.
Download or read book The United States Colombia Trade Promotion Agreement Volume 2 of 2 April 8 2008 110 2 House Document 110 103 written by and published by . This book was released on 2008 with total page 1102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock forming Minerals written by William Alexander Deer and published by Geological Society of London. This book was released on 1998 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume deals with sulphates, carbonates, phosphates and halides, incorporating recent advances in investigative techniques. Each mineral chapter has sections on structure, chemistry, optical and physical properties, distinguishing features and paragenesis. Chapters are headed with brief tabulations of mineral data and a sketch of optical orientation. Results are included from ocean floor experimentation and deep sea drilling.
Download or read book Spectra of the Rare Earths written by M. A. Elʹi︠a︡shevich and published by . This book was released on 1961 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annex 302 2 Tariff schedule of Mexico written by Canada and published by . This book was released on 1992 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The United States Colombia Trade Promotion Agreement written by United States. President (2001-2009 : Bush) and published by . This book was released on 2008 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Literature Added to the Geological Society s Library written by Geological Society of London. Library and published by . This book was released on 1906 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mineral Industry Its Statistics Technology and Trade written by Richard Pennefather Rothwell and published by . This book was released on 1913 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
