This implies the role of ice sheets in controlling wider dust emission may be underestimated. In addition to driving changes in ocean circulation through meltwater pulses, ice sheet dynamics in the Quaternary may have also driven substantial and abrupt changes in atmospheric dust activity. This ...
The gamma-ray source consists of a small iridium sheet (0.2 mm×4 mm×10 mm) shielded by a uranium box and made radioactive by neutron activation to an activity of about 1 TBq (100 Ci). The radioisotope I77192r thus generated decays with a half-life of 74 days into excited levels ...
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Higher temperatures and drought in southern Europe could decrease water availability, hydropower potential, summer tourism, and agricultural output, impeding economic activity more than in other parts of Europe. Moreover, the summer precipitation is expected to decline in Central and Eastern Europe, ...
Samples were collected on 18 March 2014 from a sea ice-covered fjord, Kobbefjord in the vicinity of Nuuk, Greenland (64°07′N, 51°21′W) with no close source of human activity (around 15 km). Due to logistical issues, air sampling was performed on the adjacent coast using a 0.1...
A large amount of dust from the Sahara reaches the Amazon Basin, as observed with satellite imagery. This dust is thought to carry micronutrients that could help fertilize the rainforest. However, considering different atmospheric transport conditions, d
Spatial inventory of UK waterbodies - CEH Historic Flood Outlines - EA Reservoir Surface Water Area (Global) - Nature Scientific Reports EStreams: An Integrated Dataset and Catalogue of Streamflow, Hydro-Climatic Variables and Landscape Descriptors for Europe - Estreams River Obstacles (dams, weirs,...
The existence of such regime provides a simple way to characterize, model and predict PEM fuel cell performances. select article Water distribution mapping in polymer electrolyte fuel cells using lock-in thermography Research articleAbstract only Water distribution mapping in polymer electrolyte fuel ...
The effects of water phase change and heat transfer, as well as electrochemical kinetics and multicomponent transport on the cell performance are taken into account simultaneously in this comprehensive model. The developed model was employed to simulate a single laboratory-scale PEMFC with an electrode...
The first (Wallbrink and Murray 1993) was developed for uncultivated scenarios representing degraded land subject to sheet wash and incision processes (Fig. 7.3a). In this context, vari- ability in the activity concentrations of 7Be and 137Cs of downstream sediment can be 7 Quantifying Sediment...