Results 71 to 80 of about 119,992 (349)

Erratic behavior of platinum-group elements along an olivine–Cr-spinel cotectic in sulfide-undersaturated basaltic magma: roles of Cr-spinel and alloys

open access: yesScientific Reports
The behavior of platinum-group elements (PGE) in sulfide-undersaturated primitive magmas may be controlled by crystallization of either Cr-spinel, platinum-group minerals (PGM) or olivine.
Ivan. F. Chayka   +14 more
doaj   +1 more source

Effect of composition on the structure of lithium- and manganese-rich transition metal oxides [PDF]

open access: yes, 2018
The choice of chemical composition of lithium- and manganese-rich transition metal oxides used as cathode materials in lithium-ion batteries can significantly impact their long-term viability as storage solutions for clean energy automotive applications.
Bowling, Charles   +8 more
core   +4 more sources

Hybrid Microdiscs for Magnetically Induced Non‐Cytotoxic Thermal Actuation and Programmable Biomolecule Delivery

open access: yesAdvanced Functional Materials, EarlyView.
Hybrid magnetic microdiscs with customizable size and composition are engineered through refined photolithography and LbL assembly. Embedded Fe3O4 nanoparticles enable localized, non‐cytotoxic heating, while protein cargos can be incorporated in tunable quantities.
Daniela Iglesias‐Rojas   +13 more
wiley   +1 more source

La integral de la ecuación de Klein Gordon

open access: yesMomento, 1995
Se plantea un método para integrar Ecuaciones Diferenciales Parciales y se aplica. a la ecuación de onda de Klein Gordon. Se hace un desarrollo detallado para paquetes de onda cuando es posible definir una velocidad de grupo.
Marta Spinel de Uribe
doaj  

Mechanistic Insights into a Synergistic FeOx/Fe‐N4 System for Practical Nitrate Abatement with Value‐Added Ammonia Recovery

open access: yesAdvanced Functional Materials, EarlyView.
This work provides a novel interpretation of the nitrate reduction mechanism on iron oxides (FeOx) by employing constant‐potential density functional calculations and reports the design and synthesis of a robust and high‐performance Fe3O4/Fe‐N4‐C catalyst with remarkable Faradaic efficiency, current density, and stability under practical reaction ...
Qiang Zhou   +8 more
wiley   +1 more source

Algebra de Clifford

open access: yesMomento, 1990
El algebra de Clifford (o algebra geometrical como lenguaje unificado para matemáticos y físicos ha adquirido auge en los últimos años y David Hestenes ha sido uno de sus grandes impulsores con trabajos de datan desde los años 60.
María Carolina Spinel G.
doaj  

Magnetism and Nonlinear Charge Transport in NiFe2O4/γ‐Al2O3/SrTiO3 Heterostructure: Toward Spintronic Applications

open access: yesAdvanced Functional Materials, EarlyView.
In this report, we demonstrate that a crystalline phase of 52nm thick NiFe2O4 can be grown by RF sputtering on top of γ‐Al2O3(8nm)/SrTiO3 at a significantly low temperature (150 °C) without compromising the mobility and carrier density of the 2D electron gas at the γ‐Al2O3(8nm)/SrTiO3 interface.
Amit Chanda   +11 more
wiley   +1 more source

Rutas de señalización celular involucradas en la plasticidad post-sináptica inducida por la activación de los canales de glutamato tipo NMDA en el hipocampo

open access: yesActa Biológica Colombiana, 2005
La apertura de los canales de glutamato tipo NMDA, gracias a la acción concomitante de las neuronas pre-sináptica y post-sináptica a nivel de las espinas dendríticas, induce a modificaciones de la fuerza y eficacia sinápticas en éstas, fenómeno mejor ...
Sebastián Patrón Saade, Clara Spinel
doaj  

Phase Engineering of 2D Spinel‐Type Manganese Oxides [PDF]

open access: bronze, 2023
Xiaoqiang Feng   +9 more
openalex   +1 more source

Competitive segregation of gallium and indium at heterophase Cu–MnO interfaces studied with transmission electron microscopy [PDF]

open access: yes, 2003
This paper concentrates on the possible segregation of indium and gallium and competitive segregation of gallium and indium at atomically flat parallel {111}-oriented Cu–MnO interfaces.
Hosson, J.Th.M. De,   +2 more
core   +4 more sources

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