Results 301 to 310 of about 898,745 (353)
Some of the next articles are maybe not open access.
Dissolved Oxygen and Nutrients
2015Changing 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
openaire +1 more source
Determining Dissolved Oxygen Levels
PRIMUS, 2010Abstract This project was used in a mathematical modeling and introduction to differential equations course for first-year college students. The students worked in two-person groups and were given three weeks to complete the project. Students were given this project three weeks into the course, after basic first order linear differential equation and ...
openaire +1 more source
Determination of dissolved oxygen in water
Talanta, 1978Dissolved oxygen in water is determined by its oxidation of manganese(II) to manganese(III) in alkaline medium and formation of the red manganese(III) ethylenediaminetetra-acetic acid complex on acidification to pH 4. The range of determination is 7-3160 mug of oxygen in a final volume of 500 ml.
S A, Rahim, S H, Mohamed
openaire +2 more sources
Superhydrophobic Porous Surfaces: Dissolved Oxygen Sensing
ACS Applied Materials & Interfaces, 2015Porous polymer films are necessary for dissolved gas sensor applications that combine high sensitivity with selectivity. This report describes a greatly enhanced dissolved oxygen sensor system consisting of amphiphilic acrylamide-based polymers: poly(N-(1H, 1H-pentadecafluorooctyl)-methacrylamide) (pC7F15MAA) and poly(N-dodecylacrylamide-co-5- [4-(2 ...
Yu, Gao +4 more
openaire +2 more sources
SEDIMENT OXYGEN DEMAND MODELING IN DISSOLVED OXYGEN BALANCE
1998Dissolved 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.
openaire +2 more sources
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 +4 more
openaire +1 more source
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 +4 more
openaire +1 more source
Stochastic Dissolved Oxygen Model
Journal of Environmental Engineering, 1988A one‐dimensional steady state stochastic river water quality model is developed to compute the mean values and standard deviations of CBOD, DO and NOD concentrations at any point in a river. The model considers randomness in the initial conditions, inputs, rate constants and other model parameters as well as randomness in each of the modeled processes
openaire +1 more source
SELF-CORRECTING MEASUREMENT OF DISSOLVED OXYGEN
IFAC Proceedings Volumes, 1985Abstract 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.
openaire +1 more source
2015
Dissolved oxygen (DO) plays a vital role in many industrial, physiological, and environmental processes. The electrochemistry is greatly influenced by the amount of dissolved oxygen because of the reduction of molecular oxygen. A number of chemical and biological reactions in water also depend on the amount of dissolved oxygen. Monitoring the oxygen in
Latif, Usman, Dickert, Franz
openaire +1 more source
Dissolved oxygen (DO) plays a vital role in many industrial, physiological, and environmental processes. The electrochemistry is greatly influenced by the amount of dissolved oxygen because of the reduction of molecular oxygen. A number of chemical and biological reactions in water also depend on the amount of dissolved oxygen. Monitoring the oxygen in
Latif, Usman, Dickert, Franz
openaire +1 more source
Reactive oxygen species signalling in plant stress responses
Nature Reviews Molecular Cell Biology, 2022Ron Mittler +2 more
exaly