Publications by authors named "R Polinsky"

Secondary salinization, the increase of anthropogenically-derived salts in freshwaters, threatens freshwater biota and ecosystems, drinking water supplies, and infrastructure. The various anthropogenic sources of salts and their locations in a watershed may result in secondary salinization of river and stream networks through multiple inputs. We developed a watershed predictive assessment to investigate the degree to which topology, land-cover, and land-use covariates affect stream specific conductivity (SC), a measure of salinity.

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Article Synopsis
  • Reports indicate that efforts to reduce phosphorus pollution to combat harmful algal blooms and hypoxia are not improving water quality in many areas.
  • A comprehensive inventory of phosphorus inputs and outputs in the U.S. shows that agricultural phosphorus use often exceeds crop removal, leading to further accumulation of "legacy" phosphorus.
  • Despite some declines in urban phosphorus sources due to restrictions on certain products, a lack of standardized phosphorus data complicates assessing watershed responses and targeting effective interventions.
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Spatial patterns in major dissolved solute concentrations were examined to better understand impact of surface coal mining in headwaters on downstream water chemistry. Sixty sites were sampled seasonally from 2012 to 2014 in an eastern Kentucky watershed. Watershed areas (WA) ranged from 1.

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In October 2015, a 74-year-old Caucasian male patient (past medical history of hyperlipidemia, paroxysmal atrial fibrillation, hypertension, and hypothyroidism) presented to the cardiologist for follow-up outpatient evaluation of exertional chest pain. The patient had recently been seen at the Emergency Department for the same complaint. At that time, the patient's cardiac markers, EKG, and pharmacological nuclear stress testing were all reported as normal.

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A left atrial appendage aneurysm is a rare cause of atrial arrhythmia in a young adult. Resection of the aneurysm is uniformly recommended in order to prevent thromboembolism and stroke. In patients without evidence of clot within the aneurysm, operative resection via a limited thoracotomy provides a safe and effective alternative to median sternotomy with cardiopulmonary bypass.

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