Results 81 to 90 of about 111,310 (296)

U-Pn geochronology of deformed metagranites in central Sutherland, Scotland: evidence for widespread late Silurian metamorphism and ductile deformation of the Moine Supergroup during the Caledonian orogeny [PDF]

open access: yes, 2003
Within the Caledonides of central Sutherland, Scotland, the Neoproterozoic metasedimentary rocks of the Moine Supergroup record NW-directed D2 ductile thrusting and nappe assembly, accompanied by widespread tight-to-isoclinal folding and amphibolite ...
Friend, C.R.L.   +5 more
core   +1 more source

Stress‐Induced Melting Controlled Failure Mechanisms of Methane Hydrate

open access: yesAdvanced Science, EarlyView.
We study methane hydrate via nanoindentation and nuclear magnetic resonance (NMR), finding its regional melting and mechanical properties, challenging existing views on hydrogen‐bonded crystals. Abstract Methane hydrate, a kind of nonstoichiometric crystalline, attracted worldwide attentions as a promising substitute energy. Its Dissociation is thought
Yanlong Li   +9 more
wiley   +1 more source

Inferring the timing of abandonment of aggraded alluvial surfaces dated with cosmogenic nuclides [PDF]

open access: yesEarth Surface Dynamics, 2019
Information about past climate, tectonics, and landscape evolution is often obtained by dating geomorphic surfaces comprising deposited or aggraded material, e.g. fluvial fill terraces, alluvial fans, volcanic flows, or glacial till.
M. K. D'Arcy   +5 more
doaj   +1 more source

Metastable Structure for Ultra‐Sustainable, High Capacity and Kinetics‐Enhanced Magnesium‐Ion Battery

open access: yesAdvanced Science, EarlyView.
A metastable‐phase evolution strategy is proposed for magnesium‐ion batteries, enabling the in situ formation of a metastable MgxT‐VS4 cathode during cycling. The metastable state reshapes Mg2+ storage kinetics and enhances structural stability, offering a new design paradigm for multivalent ion battery cathodes.
Rongrui Deng   +12 more
wiley   +1 more source

SRTM DEM levels over papyrus swamp vegetation – a correction approach [PDF]

open access: yesAdvances in Geosciences, 2009
The SRTM DEM, a digital elevation model based on the Shuttle Radar Topography Mission of February 2000 is a source of elevation data with nearly worldwide coverage.
N. Fohrer, G. Petersen, I. Lebed
doaj  

Towards Climate Neutrality by 2050: Role of Aluminum for Short‐ and Long‐Term Energy and Hydrogen Storage

open access: yesAdvanced Energy Materials, EarlyView.
The Aluminum energy storage cycle involves the use of renewable energy for Al production and the generation of heat (dry cycle) and heat and H2 (wet cycle) for energy production via Al‐steam combustion. ABSTRACT Reaching climate neutrality by 2050 requires innovative long‐term energy storage (LTES) solutions beyond the current use of fossil fuels ...
Lorenzo Trombetti   +2 more
wiley   +1 more source

Evidence of, and a proposed explanation for, bimodal transport states in alluvial rivers [PDF]

open access: yesEarth Surface Dynamics, 2018
Gravel-bedded rivers organize their bank-full channel geometry and grain size such that shear stress is close to the threshold of motion. Sand-bedded rivers, on the other hand, typically maintain bank-full fluid stresses far in excess of threshold, a ...
K. B. J. Dunne, D. J. Jerolmack
doaj   +1 more source

A Guideline to Evaluate Sorbent Performance for Atmospheric Water Harvesting

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
Reporting guidelines for atmospheric water harvesting sorbents allow benchmarking between research groups across seven key performance indicators (KPIs). Beyond simple equilibrium values (such as capacity or maximum water uptake), these KPIs validate sensitivity, reversibility, regeneration conditions, chemical stability, kinetics, and water quality ...
Simon Ponton   +7 more
wiley   +1 more source

Intense storms in the Mediterranean: a first description from the ERA-40 perspective [PDF]

open access: yesAdvances in Geosciences, 2006
The study of the Mediterranean cyclones from a climatological point of view has been one of the objectives of the first phase of WMO WWRP MEDEX (MEDiterranean EXperiment) project.
A. Genovés, J. Campins, A. Jansà
doaj  

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