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1. |
Record Nr. |
UNINA9910683379203321 |
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Titolo |
Artisanal and Small-Scale Gold Mining (ASGM) Related Environmental and Health Problems / / edited by Masayuki Sakakibara, Win Thiri Kyaw, JoseĢ Luis Rivera Parra |
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Pubbl/distr/stampa |
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ISBN |
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Descrizione fisica |
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1 online resource (360 pages) |
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Disciplina |
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Soggetti |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Sommario/riassunto |
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This reprint focuses on artisanal and small-scale gold mining (ASGM) all over the world, as well as its impact on the economy, environment, and health, providing sustainable solutions to severe ASGM problems. This book presents a total of 20 published articles of regions including Southeast Asia, South America, and South Africa, as well as a general overview of ASGM issues. Studies included in this book posit that (1) ASGM activity is still widely practiced as an alternative livelihood in rural areas in many countries around the world, using toxic elements such as Hg and cyanide due to a lack of legal enforcement on the ASGM sector; (2) ASGM has a negative impact on environmental ecosystems, causes occupational health problems for miners, and causes chronic health disorders in both ASGM communities and those living far from ASGM areas. However, some studies propose that specific potential bioindicators could be used to monitor the environment and health of those living in ASGM communities, providing sustainable solutions to severe ASGM problems. |
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2. |
Record Nr. |
UNINA9910299761003321 |
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Autore |
Krupka Demeter |
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Titolo |
Introduction to Global Variational Geometry / / by Demeter Krupka |
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Pubbl/distr/stampa |
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Paris : , : Atlantis Press : , : Imprint : Atlantis Press, , 2015 |
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ISBN |
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Edizione |
[1st ed. 2015.] |
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Descrizione fisica |
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1 online resource (366 p.) |
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Collana |
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Atlantis Studies in Variational Geometry, , 2214-0719 ; ; 1 |
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Disciplina |
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Soggetti |
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Global analysis (Mathematics) |
Manifolds (Mathematics) |
Geometry, Differential |
Mathematical optimization |
Calculus of variations |
Mathematical physics |
Gravitation |
Global Analysis and Analysis on Manifolds |
Differential Geometry |
Calculus of Variations and Optimization |
Theoretical, Mathematical and Computational Physics |
Classical and Quantum Gravity |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Jet prolongations of fibred manifolds -- Differential forms on jet prolongations of fibred manifolds -- Formal divergence equations -- Variational structures -- Invariant variational structures -- Examples: Natural Lagrange structures -- Elementary sheaf theory -- Variational sequences. |
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Sommario/riassunto |
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The book is devoted to recent research in the global variational theory on smooth manifolds. Its main objective is an extension of the classical variational calculus on Euclidean spaces to (topologically nontrivial) finite-dimensional smooth manifolds; to this purpose the methods of global analysis of differential forms are used. Emphasis is placed on the foundations of the theory of variational functionals on fibered manifolds - relevant geometric structures for variational principles in |
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geometry, physical field theory and higher-order fibered mechanics. The book chapters include: - foundations of jet bundles and analysis of differential forms and vector fields on jet bundles, - the theory of higher-order integral variational functionals for sections of a fibred space, the (global) first variational formula in infinitesimal and integral forms- extremal conditions and the discussion of Noether symmetries and generalizations,- the inverse problems of the calculus of variations of Helmholtz type- variational sequence theory and its consequences for the global inverse problem (cohomology conditions)- examples of variational functionals of mathematical physics. Complete formulations and proofs of all basic assertions are given, based on theorems of global analysis explained in the Appendix. |
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