搜索结果: 1-13 共查到“海洋科学 reduction”相关记录13条 . 查询时间(0.125 秒)
The importance of Dissimilatory Nitrate reduction to ammonium (DNra) in the Nitrogen cycle of coastal ecosystems
Dissimilatory Nitrate Nitrogen cycle
2015/7/16
Until recently, it was believed that biological assimilation and gaseous nitrogen (N) loss through denitrification were the two major fates of nitrate entering or produced within most coastal ecosyste...
Nitrogen fixation and dissimilatory nitrate reduction to ammonium (DNRA) support nitrogen dynamics in Texas estuaries
Nitrogen fi xation dissimilatory nitrate
2014/4/30
We conducted continuous-flow experiments on intact sediment cores from Laguna Madre, Sabine Lake, East
Matagorda Bay, and Nueces Estuary to evaluate internal nitrogen (N) sources, sinks, and re...
Characterization of the key pathways of dissimilatory nitrate reduction and their response to complex organic substrates in hyporheic sediments
Characterization of the key pathways dissimilatory nitrate reduction their response to complex organic substrates hyporheic sediments
2014/4/4
Laboratory incubations with river-bed sediment collected from riffles and pools were used to quantify potential pathways of dissimilatory nitrate reduction in the hyporheic zone of a groundwater-fed r...
Characterization of the key pathways of dissimilatory nitrate reduction and their response to complex organic substrates in hyporheic sediments
Characterization the key pathways dissimilatory nitrate reduction their response complex organic substrates in hyporheic sediments
2014/4/2
Laboratory incubations with river-bed sediment collected from riffles and pools were used to quantify potential pathways of dissimilatory nitrate reduction in the hyporheic zone of a groundwater-fed r...
Reduction of dimethylsulfoxide to dimethylsulfide by marine phytoplankton
dimethylsulfoxide dimethylsulfide marine phytoplankton
2014/4/18
Dimethylsulfoxide (DMSO) is an abundant but poorly understood methylated sulfur compound in the marine environment. One potentially significant loss pathway for DMSO is through its biological reductio...
Role of sulfate reduction and methane production by organic carbon degradation in eutrophic fjord sediments (Limfjorden, Denmark)
Role of sulfate reduction methane production organic carbon degradation eutrophic fjord sediments
2014/4/17
The anaerobic mineralization of buried organic matter through sulfate reduction and methanogenesis was studied in 2-m-long piston cores of organic-rich, silty-clay sediment from two sites in Limfjorde...
The effect of increased nitrate loading on nitrate reduction via denitrification and DNRA in salt marsh sediments
increased nitrate nitrate reduction via
2014/4/16
The effects of increased nitrogen loading on denitrification and dissimilatory nitrate reduction to ammonium
(DNRA) in marsh sediments were studied in permanently submerged subtidal creek sediments a...
A method for testing drag-reduction on riblet surfaces based on the Spalding formula
Spalding formula riblet surface drag-reduction testing
2011/9/13
This paper presents a method based on the Spalding formula for testing drag-reduction on riblet surfaces. Its advantage lies in that it is more convenient and yields more precise data compared with te...
Nitrogen and oxygen isotope fractionation during dissimilatory nitrate reduction by denitrifying bacteria
Nitrogen and oxygen isotope fractionation dissimilatory nitrate reduction denitrifying bacteria
2014/4/21
We report the first measurements of coupled nitrogen (N) and oxygen (O) isotope fractionation of nitrate by laboratory cultures of denitrifying bacteria. Two seawater strains (Pseudomonas stutzeri, Oc...
A method based on potential theory for calculating air cavity formation of an air cavity resistance reduction ship
air cavity resistance reduction forming of air cavity potential theory cavitation number
2011/9/14
This research is intended to provide academic reference and design guidance for further studies to determine the most effective means to reduce a ship’s resistance through an air-cavity.On the basis o...
The FeL model of iron acquisition: Nondissociative reduction of ferric complexes in the marine environment
The FeL model of iron acquisition Nondissociative reduction ferric complexes marine environment
2014/5/4
Recently there has been recognition of the importance of reductive processes in the acquisition of iron by microorganisms in marine environments with Fe(III) reduction induced by either membrane-bound...
An empirical model describing the seasonal dynamics of phosphorus in 16 shallow eutrophic lakes after external loading reduction
p An empirical model describing phosphorus
2014/4/30
Based on monthly mass balances on 7–8 yr of data from 16 shallow (mean depth: 1–10 m), eutrophic, unstratified,
or only temporarily stratified Danish lakes, we developed a simple empirica...
Kinetics of microbial Fe(III) oxide reduction in freshwater wetland sediments
Kinetics of microbial Fe(III) oxide reduction freshwater wetland sediments
2014/5/26
The kinetics of microbial amorphous Fe(III) oxide reduction was investigated in sediments from a freshwater wetland in north central Alabama, USA. Fe(III) oxide concentrations decreased exponentially ...