OBJECTIVE To compare the metabolite profiles of venous effluent from both kidneys of individuals with unilateral atherosclerotic renal artery stenosis (ARAS) in order to directly examine how impaired renal blood flow impacts small-molecule handling in humans. METHODS We applied liquid chromatography-mass spectrometry based metabolite profiling to venous plasma obtained from the stenotic (STK)...

The delineation of lateral and vertical gradients of organic contaminants in lakes is hampered by low concentrationsand nondetection of many organic compounds in water. Passive samplers (semipermeable membrane devices [SPMDs] and polar organic chemical integrative samplers [POCIS]) are well suited for assessing gradients because they can detect synthetic organic compounds (SOCs) at pg L(-1) con...

Pymatuning Lake, located on the Pennsylvania/Ohio border, is noted for the large numbers of bread-eating carp that frequent the Linesville Causeway "carp bowl" from May to November. Carp were trapped in 1952 and 1984 at the carp bowl, tagged, and relocated varying distances away from the bowl in Sanctuary, Middle, and Lower lakes. Carp traversed the return distances of up to 9 km in less than 4...

We used an annual time series (August 2004 until August 2005) of ENVISAT-ASAR data, supported by two ASTER scenes to investigate ice dam fluctuations and changes of the surface area of the marginal lake Grænalón. The lake occupies a lateral valley, dammed by the westernmost flow band of Skeiðarárjökull, one of the largest outlets of Vatnajökull ice cap. During the period of investigation Skeiða...

It is located 650m above sea level along the boundary between the North Caribbean and Pacific slopes, near the Southern end of the volcanic Guanacaste mountain range. In the early 1980s the lake's main outlet was dammed and the outflow was diverted into Arenal Reservoir. Lake Cote was first studied in 1990-1991, and later in 2001, before it was again modified by raising its dam by one meter to ...

Current paradigms of reservoir ontogeny suggest that water-level fluctuations may increase sedimentary nutrient release, causing long-term eutrophication of water bodies formed by dryland flooding. Less is known of the changes in nutrient status following conversion of natural lakes into reservoirs. Here, we use historical hydrological and limnological data and paleolimnological records of sedi...

Karacaören-II Dam Lake is located on Aksu Stream within the borders of Burdur. The lake planned to be a drinking water supply for Antalya in near future. Some scientific studies carried out recent years stated that suffers from eutrophication problem due pressures basin.
 This study examined relationships between selected quality parameters (BOD5, DO, pH, NH4-N, NO2-N, NO3-N, TKN, TN, o-PO...