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A mass balance for Se in the south arm of the Great Salt Lake was developed for September 2006 to August 2007 of monitoring for Se loads and removal flows. The combined removal flows (sedimentation and volatilization) totaled to a geometric mean value of 2079 kg Se/yr, with the estimated low value being 1255 kg Se/yr, and an estimated high value of 3143 kg(More)
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted material contained within this report. Abstract Discharge and water-quality data from six(More)
The removal mechanisms that govern Se concentrations in the Great Salt Lake are unknown despite this terminal lake being an avian habitat of hemispheric importance. However, the volatilization flux of Se from the Great Salt Lake has not been previously measured due to challenges of analysis in this hypersaline environment This paper presents results from(More)
BACKGROUND Surveillance of physical activity (PA) is essential for the development of health promotion initiatives. The aim of the present study was to examine the prevalence of PA and sedentary behaviour with respect to socio-demographic factors in Chile. METHODS A representative sample of 5434 adults aged ≥15 years (59% women) who participated in the(More)
The Great Salt Lake (GSL) is a unique ecosystem in which trace element activity cannot be characterized by standard geochemical parameters due to the high salinity. Movement of selenium and other trace elements present in the lake bed sediments of GSL may occur due to periodic stratification displacement events or lake bed exposure. The water column of GSL(More)
examine the existing distribution of selenium in the water and sediment of the south arm of the Great Salt Lake, and to measure Se fluxes between water, sediment, and the atmosphere at the Great Salt Lake. Results of these measurements are summarized in six sections below. Great Salt Lake Characteristics The average selenium (Se) concentration from May 2006(More)
Certain antenna applications require Dual-beam radiation patterns. The main aim of this paper is to generate the dual-beam radiation patterns from an array of isotropic radiators with single prefixed amplitude distribution. The optimal phase excitations are obtained using Particle Swarm Optimization. Beam 1 is a highly directive pencil beam and beam 2 is a(More)
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