Results 71 to 80 of about 120,946 (348)

Un algoritmo para integrar ecuaciones diferenciales de segundo orden

open access: yesMomento, 1995
An algorithm is developedto integrate a differential equation of the form  [Physical Formula]  It is shown thatthe algorithm so obtained reduces to the Numerov algorithm when F(x) = O.
Marta Spinel de Uribe
doaj  

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

Grain refinement in a AlZnMgCuTi alloy by intensive melt shearing: A multi-step nucleation mechanism [PDF]

open access: yes, 2011
This is a post-print version of the article. Copyright @ 2010 Elsevier B.V.Direct chill (DC) cast ingots of wrought Al alloys conventionally require the deliberate addition of a grain refiner to provide a uniform as-cast microstructure for the ...
Cao   +35 more
core   +1 more source

Frontier Advances of Emerging High‐Entropy Anodes in Alkali Metal‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Recent advances in microscopic morphology control of high‐entropy anode materials for alkali metal‐ion batteries. Abstract With the growing demand for sustainable energy, portable energy storage systems have become increasingly critical. Among them, the development of rechargeable batteries is primarily driven by breakthroughs in electrode materials ...
Liang Du   +14 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  

Mafic alkaline metasomatism in the lithosphere underneath East Serbia: evidence from the study of xenoliths and the host alkali basalts [PDF]

open access: yes, 2010
Effects of mafic alkaline metasomatism have been investigated by a combined study of the East Serbian mantle xenoliths and their host alkaline rocks.
Cvetkovic, V.   +4 more
core   +1 more source

Bio‐Inspired Magnetically Tunable Structural Colors from Elliptical Self‐Assembled Block Copolymer Microparticles

open access: yesAdvanced Functional Materials, EarlyView.
Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta   +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  

MagPiezo: A Magnetogenetic Platform for Remote Activation of Endogenous Piezo1 Channels in Endothelial Cells

open access: yesAdvanced Functional Materials, EarlyView.
MagPiezo enables wireless activation of endogenous Piezo1 channels without genetic modification using 19 nm magnetic nanoparticles and low‐intensity magnetic fields. It generates torque forces at the piconewton scale to trigger mechanotransduction in endothelial cells, standing as a novel platform to interrogate and manipulate Piezo1 activity in vitro.
Susel Del Sol‐Fernández   +7 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  

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