Results 21 to 30 of about 36,266 (311)

Understanding the interaction between a steel microstructure and hydrogen [PDF]

open access: yes, 2018
The present work provides an overview of the work on the interaction between hydrogen (H) and the steel’s microstructure. Different techniques are used to evaluate the H-induced damage phenomena. The impact of H charging on multiphase high-strength
Depover, Tom   +5 more
core   +2 more sources

Can Biomass Mastication Assist the Downstreaming of Polyhydroxyalkanoates Produced from Mixed Microbial Cultures?

open access: yesMolecules, 2023
Polyhydroxyalkanoates (PHAs) are natural polyesters which biodegrade in soils and oceans but have more than double the cost of comparable oil-based polymers. PHA downstreaming from its biomass represents 50% of its overall cost.
Hiléia K.S. Souza   +4 more
doaj   +1 more source

Channelized melt flow in downwelling mantle: Implications for 226Ra-210Pb disequilibria in arc magmas [PDF]

open access: yes, 2008
We present the results of an analytical model of porous flow of viscous melt into a steadily dilating ‘‘channel’’ (defined as a cluster of smaller veins) in downwelling subarc mantle.
Abelson   +37 more
core   +1 more source

Tracking Crystal‐Melt Segregation and Accumulation in the Intermediate Magma Reservoir

open access: yesGeophysical Research Letters, 2023
The genesis of intermediate intrusions is highly controversial, and one of the hot topics is whether they represent frozen melts or cumulates in the evolution of magmatic systems. Distinguishing accumulation from crystallization melt differentiated along
Jian‐Feng Ma   +3 more
doaj   +1 more source

Mantle melting as a function of water content beneath back-arc basins [PDF]

open access: yes, 2006
Subduction zone magmas are characterized by high concentrations of H_(2)O, presumably derived from the subducted plate and ultimately responsible for melting at this tectonic setting.
Grove, Timothy L.   +5 more
core   +1 more source

Influence of Lithology on Reactive Melt Flow Channelization

open access: yesGeochemistry, Geophysics, Geosystems, 2020
To investigate channelization during migration of a reactive melt, we performed a series of Darcy‐type experiments in which an alkali basalt infiltrated partially molten harzburgites and lherzolites at a confining pressure of 300 MPa, temperatures of ...
M. Pec   +3 more
doaj   +1 more source

Geophysical characterisation of the ocean–continent transition at magma-poor rifted margins [PDF]

open access: yes, 2009
Geophysical characterisation of the ocean-continent transition (OCT) at magma-poor riftedmargins has focused primarily on the determination of P wave velocities using wide-angleseismic techniques. Such experiments have shown that the OCT is heterogeneous,
Minshull, Timothy A.
core   +1 more source

Accessory Mineral Eu Anomalies in Suprasolidus Rocks: Beyond Feldspar

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Accessory mineral Eu anomalies (Eu/Eu*) are routinely measured to infer changes in the amount of feldspar over time, allowing accessory mineral U‐Pb dates to be linked to the progressive crystallization of igneous and metamorphic rocks and, by extension,
R. M. Holder, C. Yakymchuk, D. R. Viete
doaj   +1 more source

STUDYING GLACIAL MELT PROCESSES USING SUB-CENTIMETER DEM EXTRACTION AND DIGITAL CLOSE-RANGE PHOTOGRAMMETRY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Glaciers are sensitive to climatic variation and a particular developing area of investigation is in the field of "cryoconite”, referring to dustlike residues which form on the glacier surface.
E. Sanz-Ablanedo   +2 more
doaj   +1 more source

Oxygen-isotope and trace element constraints on the origins of silica-rich melts in the subarc mantle [PDF]

open access: yes, 2007
Peridotitic xenoliths in basaltic andesites from Batan island in the Luzon arc contain silica-rich (broadly dacitic) hydrous melt inclusions that were likely trapped when these rocks were within the upper mantle wedge underlying the arc.
Eiler, J. M.   +4 more
core   +5 more sources

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