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Mostrando ítems 11-20 de 355
Mineralogical characterization by rare earths in mineral deposits of central PeruCaracterización mineralógica por tierras raras en depósitos minerales del centro del Perú
(Universidad Nacional Mayor de San Marcos, Facultad de Ingeniería Geológica, Minera, Metalúrgica y Geográfica, 2016)
Radioluminescence of rare-earth doped potassium yttrium fluorides crystals
(Pergamon-Elsevier Science Ltd, 2011-12)
The radioluminescence (RL) properties of K2YF5 crystals doped with Ce3+, Tb3+ and Dy3+ under ionizing irradiation excitation have been studied for the first time. The main objective of this work has been to assess the ...
Volume and heat of solution of hydrogen in rare earths from proton screening charges
(Pergamon-Elsevier Science Ltd, 2006-08)
In this work we determine some fundamental microscopic and macroscopic properties of rare earth-hydrogen (RE-H) systems. The behaviour of the electronic density variation of RE-H systems is obtained, using a program based ...
Minor and rare earth elements as paleoenvironmental markers of late quaternary sediments in Marajo Island, Northern Brazil
(Sociedade Brasileira de Geoquímica, 2013)
THE RARE-EARTH ELEMENT (REE) PATTERNS AND THE KOMATIITIC GEOCHEMISTRY AFFINITY OF THE MAGNESIAN SCHISTS AND ASSOCIATED ROCKS FROM THE CAMBAINHO COMPLEX, SÃO GABRIEL/RSOS PADRÕES DE ELEMENTOS TERRAS RARAS (ETR) E A AFINIDADE GEOQUÍMICA KOMATIÍTICA DOS XISTOS MAGNESIANOS E ROCHAS ASSOCIADAS DO COMPLEXO CAMBAIZINHO, SÃO GABRIEL/RS
(Sociedade Brasileira de Geologia, 2017)
GEOCHEMICAL BEHAVIOR OF THE RARE EARTH ELEMENTS OF THE PRE-CAMBRIAN MAGNESIAN METACARBONATE SEQUENCE (~1.8Ga) OF THE ORÓS MOBILE BELTCOMPORTAMENTO GEOQUÍMICO DOS ELEMENTOS TERRAS RARAS DA SEQUÊNCIA METACARBONÁTICA MAGNESIANA PRÉ-CAMBRIANA (~1.8Ga) DA FAIXA MÓVEL ORÓS
(Sociedade Brasileira de Geologia, 2017)
CHRISTALLOCHEMICAL BEHAVIOR OF PRIMARY AND HYDROTHERMAL MONAZITE DURING THE EVOLUTION OF GRANITES AND GREISENS: EXAMPLES FROM THE TOCANTINS AND PARANÂ SUBPROVINCES, GOIÁS CENTRAL BRAZIL.COMPORTAMENTO CRISTALOQUÍMICO DE MONAZITA PRIMÁRIA E HIDROTERMAL DURANTE A EVOLUÇÃO DE GRANITOS E GREISENS: EXEMPLOS DAS SUBPROVÍNCIAS TOCANTINS E PARANÃ, GOIÁS.
(Sociedade Brasileira de Geologia, 2017)
Occurrence and Variability of Composition of Phosphates from the Monazite Group in CarbonatitesOcorrência e Variabilidade de Composição dos Fosfatos do Grupo da Monazita em Carbonatitos
(Instituto de Geociências /Universidade Federal do Rio Grande do Sul, 2003)
RARE EARTH ELEMENTS IN SÃO PAULO STATE: A GEOLOGICAL EVALUATION.TERRAS-RARAS NO ESTADO DE SÃO PAULO: AVALIAÇÃO DA POTENCIALIDADE GEOLÓGICA
(Sociedade Brasileira de Geologia, 2017)