Results 241 to 250 of about 1,696,973 (291)

Dissolved Oxygen and Nutrients

2015
Changing global temperatures may alter oceanic concentrations of both dissolved oxygen (DO), which reflects water quality, and nutrients, which are an essential factor for the growth and distribution of phytoplankton. The East Sea (Japan Sea) is often considered a “miniature ocean” and an ideal natural laboratory to estimate the impact of global ...
TaeKeun Rho, Tongsup Lee, Soonmo An
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The Dissolved Oxygen Handbook: a practical guide to dissolved oxygen measurements.

2009
Current
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Dissolved oxygen electrodes

1979
Recent advances in theory, construction, operation, and application of dissolved oxygen (DO) electrodes are reviewed to assist those who use or intend to use them in such areas as biochemical engineering, microbiology, and environmental engineering. Basic operating principles of membrane-covered DO electrodes and oxygen microelectrodes are presented ...
Young H. Lee, George T. Tsao
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Dissolved Oxygen as an Indicator of Bioavailable Dissolved Organic Carbon in Groundwater

Groundwater, 2011
Concentrations of dissolved oxygen (DO) plotted vs. dissolved organic carbon (DOC) in groundwater samples taken from a coastal plain aquifer of South Carolina (SC) showed a statistically significant hyperbolic relationship. In contrast, DO‐DOC plots of groundwater samples taken from the eastern San Joaquin Valley of California (CA)
Francis H, Chapelle, Paul M, Bradley, Peter B, McMahon, Karl, Kaiser, Ron, Benner   +4 more
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Studies on the determination of dissolved oxygen in water

Talanta, 1983
Studies on the decomposition rates of the Mn(III) complex of cyclohexanediaminetetra-acetate (DCTA) in light and in darkness have shown that this complex is more stable than the one derived from ethylenediaminetetra-acetate. The optimum pH range for the determination of dissolved oxygen by means of the Mn(III)-DCTA complex is found to be between 3 and ...
M, Malaiyandi, V S, Sastri
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Dissolved Oxygen in Water

2008
After performing this experiment, the student shall be able to: Determine the level of dissolved oxygen in a sample of water using Winkler’s method. Analyze the effects of various factors on the level of dissolved oxygen in a water sample (e.g., salt content, temperature, degree of mixing, and the presence of reducing compounds).
Jorge G. Ibanez, Margarita Hernandez-Esparza, Carmen Doria-Serrano, Arturo Fregoso-Infante, Mono Mohan Singh   +4 more
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Benthic foraminiferal dissolved-oxygen index and dissolved-oxygen levels in the modern ocean

Geology, 1994
Changes in oxygen concentrations at the sediment-water interface play a major role in controlling benthic foraminiferal assemblages and morphologic characteristics; such changes are reflected in size, wall thickness, porosity, and also taxa (genera and species) of foraminifera present. These morphologic and taxonomic differences have been quantified as
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SELF-CORRECTING MEASUREMENT OF DISSOLVED OXYGEN

IFAC Proceedings Volumes, 1985
Abstract The usual method of monitoring oxygen content during biotechnological reactions is by means of a p0 2 electrode, as described by Clark (1953). The accuracy of this technique, however, is often severely diminished by contamination in or on the membrane.
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SEDIMENT OXYGEN DEMAND MODELING IN DISSOLVED OXYGEN BALANCE

1998
Dissolved oxygen (DO) is considered a comprehensive parameter of water quality from the point of view of conventional pollution, so that remarkable modeling effort has been addressed to describe and quantify DO balance components, i.e. sources and sinks.
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Impact of dissolved oxygen and pH on the removal of selenium from water by iron electrocoagulation

Water Research, 2022
Yeunook Bae, Jeffrey Catalano, Daniel Giammar   +2 more
exaly