Now showing items 1-4 of 4
Characteristics of magma-driven hydrothermal systems at oceanic spreading centers
(American Geophysical Union, 2013-06)
We use one- and two-limb single-pass models to de termine vent field characteristics such as mass flow rate Q, bulk permeability in the discharge zone k(d), thickness of the conductive boundary layer at the base of the ...
Pressure impact on the structure, elasticity, and electron density distribution of CaSi2O5
(American Physical Society, 2013-05)
Ab initio molecular dynamics simulations were used to reveal the mechanism of the fivefold to sixfold transition in Si coordination numbers of CaSi2O5. The longest first-neighbor Si-O distance drops from 2.8 to 1.8 angstrom ...
The Tissint Martian meteorite as evidence for the largest impact excavation
High-pressure minerals in meteorites provide clues for the impact processes that excavated, launched and delivered these samples to Earth. Most Martian meteorites are suggested to have been excavated from 3 to 7 km diameter ...
Low Concentrations of Silver Nanoparticles in Biosolids Cause Adverse Ecosystem Responses under Realistic Field Scenario
A large fraction of engineered nanomaterials in consumer and commercial products will reach natural ecosystems. To date, research on the biological impacts of environmental nanomaterial exposures has largely focused on ...