Results 21 to 30 of about 1,696,973 (291)

The nitrogen isotope effect of benthic remineralization-nitrification-denitrification coupling in an estuarine environment [PDF]

open access: yes, 2011
The nitrogen (N) stable isotopic composition of pore water nitrate and total dissolved N (TDN) was measured in sediments of the St. Lawrence Estuary and the Gulf of St. Lawrence.
Lehmann, M. F.   +6 more
core   +2 more sources

The development of dissolved oxygen forecast model using hybrid machine learning algorithm with hydro-meteorological variables

open access: yes, 2023
Dissolved oxygen (DO) forecasting is essential for aquatic managers responsible for maintaining ecosystem health and the management of water bodies affected by water quality parameters.
Ahmed, Abul Abrar Masrur   +4 more
core   +1 more source

New optical biosensors for uric acid and glucose [PDF]

open access: yes, 2008
This thesis describes the development of a microtiter plate assay for determination of uric acid. It also depicts the development, characterization and application of luminescence based optical biosensors for determination of uric acid and glucose ...
Schrenkhammer, Petra
core   +1 more source

A Fluorescence Based Dissolved Oxygen Sensor

open access: yes智慧农业, 2020
The measurement of dissolved oxygen content in water is of great significance to aquaculture. However, the dissolved oxygen sensors on the market in China are expensive, and are difficult to maintain continuous online measurement and update parts, so ...
GU Hao   +4 more
doaj   +1 more source

Oxygen as a control on seafloor biological communities and their roles in sedimentary carbon cycling [PDF]

open access: yes, 2007
13C tracer experiments were conducted at sites spanning the steep oxygen, organic matter, and biological community gradients across the Arabian Sea oxygen minimum zone, in order to quantify the role that benthic fauna play in the short-term processing of
Lisa A. Levin   +57 more
core   +4 more sources

Effect Of Dissolved Oxygen Concentration On Activated Sludge Settleability In Sequencing Batch Reactor

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2010
In this study, the effects of dissolved oxygen concentration and sudden decrease and increase in dissolved oxygen concentration on the settleability of activated sludge was examined in lab-scale Sequencing Batch Reactor (SBR).
Engin Gürtekin
doaj   +1 more source

Effect of temperature on the measurement of dissolved oxygen in the package.

open access: yesKvasný průmysl, 2014
The article deals with the measurement of dissolved oxygen in beverages using electronic probe and the influence of time and temperature changes on the result of measurement in a sample standing at a rest.
Jan ŠAVEL, Petr KOŠIN, Adam BROŽ
doaj   +1 more source

Relationship between soil carbon sequestration and the ability of soil aggregates to transport dissolved oxygen [PDF]

open access: yes, 2021
A key finding in soil carbon studies over the past decade is that soil organic carbon (SOC) stabilization is not controlled by its molecular complexity or adsorption to clay, but by its physicochemical protection including occlusion in aggregates and ...
Coleman, Kevin   +19 more
core   +1 more source

The measurement of dissolved oxygen today - tradition and topicality [PDF]

open access: yes, 2008
Today, the determination of the dissolved oxygen content of natural waters is practically an essential duty whenever background data is collected for investigations of a hydrobiological, ecological, and nature or environmental protection viewpoint.
Balogh, E.   +6 more
core   +1 more source

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