Results 31 to 40 of about 27,280 (282)

Subduction Dynamics and Mantle Pressure: 2. Towards a Global Understanding of Slab Dip and Upper Mantle Circulation

Geochemistry, Geophysics, Geosystems, 2020
We investigate the relationship between the global distribution of deep slab dips (at 250‐ to 300‐km depth) and pressure and circulation in the upper mantle.
Adam F. Holt, Leigh H. Royden
doaj   +1 more source

Subduction to the lower mantle – a comparison between geodynamic and tomographic models [PDF]

Solid Earth, 2012
It is generally believed that subduction of lithospheric slabs is a major contribution to thermal heterogeneity in Earth's entire mantle and provides a main driving force for mantle flow.
T. W. Becker, T. H. Torsvik, B. Steinberger   +2 more
doaj   +1 more source

Deformation-Induced Mechanical Instabilities at the Core-Mantle Boundary

, 2007
Post-Perovskite: The Last Mantle Phase Transition Our understanding of the core-mantle boundary (CMB) region has improved significantly over the past several years due, in part, to the discovery of the post-perovskite phase.
Petford, Nick; id_orcid, Yuen, David A., David A. Yuen, Tracy Rushmer, Petford, Nick, Yuen, D.A., Rushmer, Tracy, Nick Petford   +7 more
core   +1 more source

Characterizing the Complexity of Subduction Zone Flow With an Ensemble of Multiscale Global Convection Models

Geochemistry, Geophysics, Geosystems
Subduction zones are fundamental features of Earth's mantle convection and plate tectonics, but mantle flow and pressure around slabs are poorly understood because of the lack of direct observational constraints on subsurface flow.
Samuel L. Goldberg, Adam F. Holt
doaj   +1 more source

Spatiotemporal Variations in Surface Heat Loss Imply a Heterogeneous Mantle Cooling History

Geophysical Research Letters, 2021
Earth's heat budget is strongly influenced by spatial and temporal variations in surface heat flow caused by plate tectonic cycles. Here, we use a novel set of paleo‐seafloor age grids extending back to the mid‐Paleozoic to infer spatiotemporal ...
Krister S. Karlsen, Clinton P. Conrad, Mathew Domeier, Reidar G. Trønnes   +3 more
doaj   +1 more source

Powering Nanocrystal‐Based Heat Engines With Light‐Emitting Metasurfaces That Influence Their Temperature

Advanced Functional Materials, EarlyView.
Metasurfaces and other structured photonic environments can dramatically modify the absorption and/or light emission of semiconductors. However, the consequences of these changes on the temperature of the system are not well understood. The authors address this problem for colloidal nanocrystals and leverage their findings to convert light into ...
Hugo Kowalczyk, Yihao Yuan, Augustin Caillas, Amel Saidoun, Roméo Bonnet, Pascal Filloux, Emmanuel Lhuillier, Aloyse Degiron   +7 more
wiley   +1 more source

Multifunctional Gold Nanocluster‐Based PROTAC System for Targeted Degradation of Phosphorylated Tau and Modulation of Neuroinflammation in Alzheimer's Disease

Advanced Functional Materials, EarlyView.
We present a novel proteolysis‐targeting chimera (PROTAC) system conjugated to lipoic acid gold nanoclusters (PLANC), designed to degrade pTau, regulate inflammatory signaling, and effectively traverse the blood‐brain barrier (BBB). PLANC degraded pTau at various phosphorylation sites, with mechanistic studies confirming proteasome‐mediated degradation
Sarah Nevins, Callan D. McLoughlin, Wan‐Kyu Ko, Hye Kyu Choi, Brandon Conklin, Joshua B. Stein, Yannan Hou, Hongwon Kim, Rohan Khulbe, Ki‐Bum Lee   +9 more
wiley   +1 more source

Quaternary Volcanism in Myanmar: A Record of Indian Slab Tearing in a Transition Zone From Oceanic to Continental Subduction

Geochemistry, Geophysics, Geosystems, 2020
Magmatic processes that occur during the transition from oceanic to continental subduction and collision in orogens are critical and still poorly resolved.
L. Y. Zhang, W. M. Fan, L. Ding, M. N. Ducea, A. Pullen, J. X. Li, Y. L. Sun, Y. H. Yue, F. L. Cai, C. Wang, T. P. Peng, Kyaing Sein   +11 more
doaj   +1 more source

Resolving Seismic Anisotropy of the Lithosphere–Asthenosphere in the Central/Eastern Alps Beneath the SWATH-D Network

Frontiers in Earth Science, 2021
The Alpine orogeny is characterized by tectonic sequences of subduction and collision accompanied by break-off events and possibly preceded by a flip of subduction polarity. The tectonic evolution of the transition to the Eastern Alps has thus been under
Frederik Link, Georg Rümpker
doaj   +1 more source

Microgel‐Based 3D Bioprinting: A Convergent Strategy Integrating Material Design, Jamming Dynamics, and Biological Function

Advanced Healthcare Materials, EarlyView.
Microgel‐based 3D printed constructs represent a compelling and versatile innovation for engineering architecturally complex, dynamically remodelable, and biocompatible structures with high structural fidelity and bioactivity. By integrating material design, biofabrication, and biological function, these systems enable the development of adaptive ...
Elena Ghighină, Andreea Ioana Dinu, Jana Ghițman   +2 more
wiley   +1 more source