Results 61 to 70 of about 96,005 (268)

Complex anisotropy beneath the Peruvian flat slab from frequency-dependent, multiple-phase shear wave splitting analysis [PDF]

, 2013
Flat or shallow subduction is a relatively widespread global occurrence, but the dynamics remain poorly understood. In particular, the interaction between flat slabs and the surrounding mantle flow has yet to be studied in detail.
Eakin, Caroline M., Long, Maureen D.
core   +1 more source

The Effect of Demineralization on Coal Functional Group Pyrolysis: Rank‐Dependent Dual Mechanisms of Structural Reorganization and Mineral Catalysis

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Coal pyrolysis, as a key thermochemical conversion process, is significantly influenced by inherent minerals, yet their role across different coal ranks remains inadequately understood. This study investigates the effect of acid‐washing (demineralization) on the thermal decomposition of six functional groups (aliphatic C–H, aromatic C–H/C=C, C=
Zhiyuan Niu, Guijian Liu, Hao Yin, Yang Song, Aifang Ding   +4 more
wiley   +1 more source

Solid-state mantle convection coupled with a crystallising basal magma ocean

Comptes Rendus. Géoscience
Fractional crystallisation of a basal magma ocean (BMO) has been proposed to explain the formation of large scale compositional variations in the mantle and the persistence of partially molten patches in the lowermost mantle. We present a complete set of
Labrosse, Stéphane, Morison, Adrien, Tackley, Paul James   +2 more
doaj   +1 more source

Phase transitions in MgSiO3 post-perovskite in super-Earth mantles [PDF]

, 2017
The highest pressure form of the major Earth-forming mantle silicate is MgSiO3 post-perovskite (PPv). Understanding the fate of PPv at TPa pressures is the first step for understanding the mineralogy of super-Earths-type exoplanets, arguably the most ...
Adibekyan, Baroni, Bond, Borucki, Cai-Zhuang Wang, Christensen, Coppari, da Silva, Delfosse, Dorn, Dorn, Fortney, Gautier, Giannozzi, Gillon, Grasset, Guillot, Hatzes, Irifune, Jackson, Ji, Kai-Ming Ho, Karki, Karki, Koichiro Umemoto, Leger, Marumo, Mayor, McDonough, Mehl, Min Ji, Murakami, Murakami, Niu, Oganov, Peltier, Perdew, Quintana, Renata M. Wentzcovitch, Santos, Sasselov, Seager, Shahnas, Shunqing Wu, Sotin, Tackley, Torres, Tosi, Tsuchiya, Tsuchiya, Umemoto, Umemoto, Umemoto, Umemoto, Unterborn, Unterborn, Valencia, Vanderbilt, Wagner, Wallace, Wang, Weinstein, Weiss, Wentzcovitch, Wentzcovitch, Wright, Wu, Wu   +67 more
core   +4 more sources

“Hidden” Landscape of Prehistoric Burial Monuments: The Use of Remote Sensing in the Detection of Neolithic Long Barrows in Bohemia (Czech Republic)

Archaeological Prospection, EarlyView.
ABSTRACT Neolithic long barrows are among the earliest monumental structures in Europe, yet in many parts of Central Europe their surface expression has been largely erased by long‐term agricultural activity. This study evaluates the potential of integrated remote sensing approaches for identifying and contextualizing long barrows and associated ...
Petr Krištuf, Tomáš Kroupa, Peter Milo, Jan Havelka, Jan Turek, Martin Gojda   +5 more
wiley   +1 more source

Geodynamic Controls on Mantle Differentiation and Preservation of Long‐Term Geochemical Heterogeneity: Focus on the Primitive Undegassed Mantle

Geochemistry, Geophysics, Geosystems
The compositional evolution of the Earth's mantle is the result of mantle differentiation and thermal evolution. Partial melting of mantle materials produces geochemical heterogeneities, allows for degassing and depends on the thermal state of the mantle,
Nicolas Récalde, J. Huw Davies, James Panton, Don Porcelli, Morten Andersen   +4 more
doaj   +1 more source

Identification and tectonic implications of a tear in the South American plate at the southern end of the Lesser Antilles

Geochemistry, Geophysics, Geosystems, 2008
In the southeast corner of the Caribbean, westward subduction of (Atlantic) oceanic South America beneath the Lesser Antilles transitions to east‐west transform motion between continental South America and the Caribbean plate.
S. A. Clark, M. Sobiesiak, C. A. Zelt, M. B. Magnani, M. S. Miller, M. J. Bezada, A. Levander   +6 more
doaj   +1 more source

Physical properties and mantle dynamics [PDF]

, 1997
This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). Because planetary interiors are remote, laboratory methods and associated theory are an essential step for interpreting geophysical measurements in terms of quantities that are needed for understanding ...
Shankland, T.J., Johnson, P.A., McCall, K.R.   +2 more
openaire   +2 more sources

Efficacy, safety and cost‐effectiveness of CAR‐T therapy

British Journal of Clinical Pharmacology, EarlyView.
CAR T‐cells demonstrate high efficacy in blood cancers, including ALL, MM and DLBCL. Innovations target solid tumours despite challenges such as antigen escape. Combination therapies enhance the delivery and infiltration of CAR T cells. Toxicity, cost and resistance remain major barriers to clinical use.
Emina Karahmet Sher, Amina Džidić‐Krivić, Emma Pinjic, Nejra Selak, Kanita Omerbasic, Alexandar Chupin, Andrej Belancic, Almir Fajkic   +7 more
wiley   +1 more source

Effects of Composite Rheology on Plate‐Like Behavior in Global‐Scale Mantle Convection

Geophysical Research Letters, 2023
Earth's upper mantle rheology controls lithosphere‐asthenosphere coupling and thus surface tectonics. Rock deformation experiments and seismic anisotropy measurements indicate that composite rheology (co‐existing diffusion and dislocation creep) occurs ...
Maëlis Arnould, Tobias Rolf, Antonio Manjón‐Cabeza Córdoba   +2 more
doaj   +1 more source