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Arsenic concentrations measured by graphite-furnace atomic absorption range from <5 to 900 ug/L in groundwater pumped from 6000 wells within a 25 km 2 area of Bangladesh. The proportion of wells that exceed the local standard for drinking water of 50 ug/L arsenic increases with depth from 25% between 8-10 m to 75% between 15-30 m, then declines gradually to(More)
The Earth's mid-ocean ridges display systematic changes in depth and shape, which subdivide the ridges into discrete spreading segments bounded by transform faults and smaller non-transform offsets of the axis. These morphological changes have been attributed to spatial variations in the supply of magma from the mantle, although the origin of the variations(More)
[1] Arsenic concentrations measured by graphite furnace atomic absorption range from < 5 to 900 mg/L in groundwater pumped from 6000 wells within a 25 km 2 area of Bangladesh. The proportion of wells that exceed the Bangladesh standard for drinking water of 50 mg/L arsenic increases with depth from 25% between 8 and 10 m to 75% between 15 and 30 m, then(More)
We have observed the compensation of loss in a metal by a gain in a dielectric medium in the mixture of an Ag aggregate and a Rhodamine 6G dye. The demonstrated sixfold enhancement of the Rayleigh scattering is the evidence of the enhancement of the surface-plasmon resonance. The reported experimental observation facilitates many applications of(More)
In recent years, the development of satellite altimetry has opened previously unexplored regions of the world's oceans to exploration by marine geoscientists. By correlating sea surface gravity with seafloor depth, researchers gain insight into the kinematics of seafloor spreading and the physical mechanisms by which the seafloor is formed and deformed.(More)
This paper estimates spatial and temporal overlap between the distribution of North Pacific albatrosses and Western Central Pacific Fisheries Commission (WCPFC) longline fishing effort, highlighting areas and seasons of overlap where there is a higher risk of seabird bycatch. The results highlight the importance of the WCPFC area for all the three albatross(More)
refereed journals, book chapters, refereed proceedings of professional societies bold – senior PREM participants, underlined – students Enhancement of spontaneous and stimulated emission of a rhodamine 6G dye by an Ag aggregate, Phys. Enhancement of surface plasmons in an Ag aggregate by optical gain in a dielectric medium, Opt. Near-infrared metamaterials(More)
This paper discusses best practice for collecting seabird bycatch data in pelagic longline observer programs. The paper recognizes that key challenges for WCPFC include: • The levels of observer coverage needed for recording and monitoring bycatch of non-target species such as seabirds, which typically have high variability in CPUE • The need to divide(More)
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