Results 21 to 30 of about 2,382 (170)

Evaluación electroquímica de la degradación de la aleación de Mg-Zn-Ca en la solución fisiológica de Hanks

Revista de Metalurgia, 2020
En el presente trabajo se ha investigado el efecto de los elementos aleantes Zn (0,95% en masa) y Ca (0,15% en masa) en el mecanismo de degradación del Mg.
Gloria Acosta, Emmanuel Mena-Morcillo, Lucien Veleva   +2 more
doaj   +1 more source

Kinetic Insights Into Boron–Carbon Interaction Under Programmed Heating

Journal of the American Ceramic Society, Volume 109, Issue 8, August 2026.
This work demonstrates the decisive role of the heating rate and short‐term mechanical activation in governing the boron–carbon interaction. The combined effect of rapid heating and mechanical activation enables the 4B + C reaction to proceed at significantly lower temperatures. For the first time, the effective activation energy of the 4B + C reaction
Khachik Nazaretyan, Hasmik Kirakosyan, Larisa Abovyan, Sofiya Aydinyan, Suren Kharatyan   +4 more
wiley   +1 more source

Magma Mixing Processes in a Continental Collision Zone: Insights From Mineralogical and Geochemical Constraints

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Eocene magmatism in southern Tibet records deep geodynamic processes associated with the India‐Asia collision. The Quxu batholith, a representative segment of the Gangdese magmatic belt, hosts widespread mafic microgranular enclaves (MMEs) indicating magma mixing.
Yuanku Meng, Jinghao Zhou, Di Wang, Junling Pei, Qingling Wang, Yu Zhang   +5 more
wiley   +1 more source

Geochemical and Isotopic Constraints on Long‐Lived Source Enrichment and Mantle Evolution in Paleoproterozoic Cratonic Lamprophyres

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract The cratonic lithospheric mantle records complex metasomatic processes and is frequently tapped by alkaline magmatism, offering a unique opportunity to trace the progressive evolution of the mantle. In the present contribution, we investigate a newly identified calc‐alkaline lamprophyre field from the Neoarchean Jonnagiri Schist Belt, Eastern ...
Sourav Naskar, Rohit Pandey, Nils Björn Baumann, N. V. Chalapathi Rao, George Mathew, J. Amal Dev, J. K. Tomson   +6 more
wiley   +1 more source

Procesado mediante una ruta pulvimetalúrgica de materiales compuestos Mg-10Ti (% vol)

Revista de Metalurgia, 2005
El presente estudio trata sobre la caracterización mecánica, en el intervalo de temperaturas comprendido entre 25 y 300 °C, del material compuesto de matriz magnesio Mg-10Ti (% vol.) obtenido a través de una ruta pulvimetalúrgica que incluye la mezcla de
P. Pérez, G. Garcés, P. Adeva
doaj   +1 more source

Epidote Records (De)hydration From the Seafloor Through Subduction and Underplating: Implications for Subduction Zone Fluid Budgets and Slow Slip

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract When, where, and how much fluid is released from subducting oceanic crust control deformation, element cycling, and magmatism in subduction zones. However, the palimpsest of tectonometamorphic processes in the exhumed rock record complicates the relation of geologic observations to geodynamic models of subduction fluid sources and transport ...
P. C. Lindquist, C. B. Condit, W. F. Hoover, V. E. Guevara, G. S. Epstein   +4 more
wiley   +1 more source

Efecto de la concentración del H3O+ y Mg en el crecimiento inicial y la absorción de nutrimentos en plantas de banano cultivadas en solución hidropónica

Siembra, 2016
Se condujo un ensayo para evaluar el efecto de la concentración del ión H3O+ y del Mg en el crecimiento y absorción de agua y nutrimentos en plantas de banano.
Hernán Sancho, Eloy Molina
doaj   +1 more source

Coesite Discovery in Eclogites Confirms UHP Metamorphism in the Orlica‐Śnieżnik Dome (SW Poland)

Journal of Metamorphic Geology, Volume 44, Issue 3, Page 200-225, April 2026.
ABSTRACT Eclogite lenses are exposed within the orthogneiss‐dominated core of the Orlica‐Śnieżnik Dome in the Sudetes, which forms the northeastern margin of the Bohemian Massif (Variscan Belt of Central Europe). The presence of coesite inclusions in garnet and omphacite confirms that these eclogites underwent ultrahigh‐pressure metamorphism.
Małgorzata Nowak, Lucie Tajčmanová, Marcin Dąbrowski, Iris Buisman, Jacek Szczepański   +4 more
wiley   +1 more source

Cooling‐Induced Rheological Weakening Along the Nascent Plate Interface—A Mechanism for Catastrophic Subduction Initiation?

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract Subduction initiation often begins with slow, forced convergence, switches “on” catastrophically as the slab collapses into the mantle, and then evolves to steady‐state, self‐sustained sinking that drives global plate movements. Numerical models suggest that the collapse phase implies sudden weakening of the plate interface.
Alissa J. Kotowski, Caroline E. Seyler, James D. Kirkpatrick, Douwe J. J. van Hinsbergen   +3 more
wiley   +1 more source

Formación de palygorskita asociada al flujo regional de las aguas subterráneas del borde S.O. de la Cuenca del Duero

Estudios Geologicos, 1986
En este trabajo se presentan algunos datos sobre la geoquímica de las aguas subterráneas del paleógeno del S.O. de la Cuenca del Duero. Estos datos muestran una clara disminución de las concentraciones de sílice y de Mg a lo largo del flujo regional ...
J. Sánchez Román, J. A. Blanco Sánchez   +1 more
doaj   +1 more source