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Is phosphorus retention in autochthonous lake sediments controlled by oxygen or phosphorus?
autochthonous lake sediments phosphorus retention
2014/4/30
Eutrophication of various lakes on the Swiss Plateau was targeted in the 1980s by reducing external nutrient
loading and installing aeration/oxygenation systems. For five eutrophic lakes, three...
The sensitivity of minimum oxygen concentrations in a fjord to changes in biotic and abiotic external forcing
minimum oxygen concentrations biotic abiotic external forcing
2014/4/30
We investigated the possible biotic and abiotic causes of the observed long-term decrease of oxygen minimum
concentrations in the deep water of Gullmar Fjord. Physical factors explained about 40% of ...
Consequences of the 2003 European heat wave for lake temperature profiles, thermal stability, and hypolimnetic oxygen depletion: Implications for a warmer world
oxygen depletion thermal stability
2014/4/30
In summer 2003 central Europe suffered an unusually severe heat wave, with air temperatures similar to those predicted for an average summer during the late 21st century. We use a unique set of over h...
Oxygen dynamics in the rhizosphere of Zostera marina: A two-dimensional planar optode study
Zostera Oxygen dynamics
2014/5/4
The oxygen dynamics in the rhizosphere of Zostera marina was studied by use of planar optodes. Oxygen leakage to the rhizosphere was restricted to the root tip and extended only up to ~8 mm up along t...
Coupled model simulations of mid-Holocene ENSO and comparisons with coral oxygen isotope records
Coupled model simulations mid-Holocene ENSO coral oxygen isotope records
2010/1/25
The sensitivity of El Niño-Southern Oscillation (ENSO) to changes in mean climate is investigated for simulations of pre-industrial and mid-Holocene (6000 years before present) climate using th...
Universal scaling of dissolved oxygen distribution at the sediment-water interface: A power law
Universal scaling dissolved oxygen distribution the sediment-water interface A power law
2014/5/13
Dissolved oxygen (DO) distribution at the sediment-water interface of a flow over a smooth bed is investigated for Reynolds numbers >360 and <4,090. These conditions are commonly encountered in stream...
A seventy-two-year record of diminishing deep-water oxygen in the St. Lawrence estuary: The northwest Atlantic connection
A seventy-two-year record diminishing deep-water oxygen St. Lawrence estuary The northwest Atlantic connection
2014/5/13
Oxygen concentrations in the bottom waters of the Lower St. Lawrence estuary (LSLE) decreased from 125 μmol L-1 (37.7% saturation) in the 1930s to an average of 65 μmol L-1 (20.7% saturation) for the ...
Seasonal variations in triple oxygen isotopes and gross oxygen production in the Sagami Bay, central Japan
Seasonal variations triple oxygen isotopes gross oxygen production Sagami Bay central Japan
2014/5/9
We studied daily, diurnal, and seasonal variations in triple oxygen isotopes in the Sagami Bay from May to October 2002. The variations in composition of triple oxygen isotopes are in association with...
Effect of Air-Oxygen and Argon-Oxygen Mixtures on Dielectric Barrier Discharge Decomposition of Toluene
Air-Oxygen and Argon-Oxygen Mixtures Dielectric Barrier Discharge Toluene
2010/10/27
One alternative application in the decomposition and destruction of volatile organic compounds (VOCs) by a silent plasma dielectric barrier discharge (DBD) has been successfully accomplished. For this...
Coupled nitrogen and oxygen isotope fractionation of nitrate during assimilation by cultures of marine phytoplankton
Coupled nitrogen oxygen isotope fractionation
2014/5/19
We report the first measurements of coupled nitrogen (N) and oxygen (O) isotopic variations of nitrate (NO )2
3
during its assimilation by laboratory cultures of marine phytoplankton and deriv...
Oxygen dynamics in permeable sediments with wave-driven pore water exchange
Oxygen dynamics permeable sediments wave-driven pore water exchange
2014/5/14
The effects of advective pore water exchange driven by shallow water waves on the oxygen distribution in a permeable (k = 3.3 x 10-12 to 4.9 x 10-11 m2) natural sediment were studied with a planar oxy...
Transmission of oxygen concentration fluctuations through the diffusive boundary layer overlying aquatic sediments
oxygen concentration fluctuations diffusive boundary layer aquatic sediments
2014/5/14
Even though the O2 concentration in the diffusive boundary layer overlying natural aquatic sediments usually varies over time, microprofiles with little or no error bars are abundant in the literature...
Protein Kinase C–Dependent Increase in Reactive Oxygen Species Production in Vascular Tissues of Diabetes:
Protein Kinase C–Dependent Increase Production
2014/3/31
saturated nonesterified fatty acids (NEFA) can stimulate de novo DAG synthesis and PKC activity in cultured aortic EC and smooth muscle cells,Antioxidative Agents Targeting the Mechanism of NAD(P)H Ox...
Abrasion-ablation models and the empirical EPAX parametrization of projectile fragmentation are described. Their cross section predictions are compared to recent data of the fragmentation of secondary...
Lateral injection of oxygen with the Bosporus plume—fingers of oxidizing potential in the Black Sea
oxygen Bosporus plume— fingers oxidizing potential Black Sea
2014/5/22
Saline and warm Mediterranean water flowing through the Bosporus Strait maintains a permanent pycnocline with vertical separation of oxic (O2), suboxic (absence of O2 and H2S), and anoxic (H2S) zones ...