N. Revsbech

Publications234
h-index84
Citations21,874
Highly Influential Citations1,200
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An oxygen microsensor with a guard cathode
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Microenvironment and photosynthesis of zooxanthellae in scleractinian corals studied with microsensors for O2, pH and light
During experimental light-dark cycles, O9 in the tissue of the colonial scleractinian corals Favia sp. and Acropora sp reached >250 % of air saturation after a few minutes in light. Immediately after…
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A Cryptic Sulfur Cycle in Oxygen-Minimum–Zone Waters off the Chilean Coast
TLDR
It is shown that both sulfate reduction and sulfide oxidation contribute to energy flux and elemental cycling in oxygen-free waters off the coast of northern Chile, suggesting that it may influence biogeochemical cycling in the global ocean.
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Diffusive boundary layers and the oxygen uptake of sediments and detritus1
The thickness of diffusive boundary layers and their role for the oxygen uptake of sediments and detritus were studied by the use of microelectrodes. Gradients of oxygen were always detectable within…
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Microelectrodes: Their Use in Microbial Ecology
TLDR
There is still a long way to go in understanding of the microbial microenvironments and of the nature of the microorganisms that carry out the measured metabolic activities, and most chemical and radiotracer techniques in use today operate on a centimeter or at best on a millimeter scale and in most cases their results cannot be directly related to the relevant microorganisms.
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Evidence for complete denitrification in a benthic foraminifer
TLDR
It is demonstrated that the foraminifer Globobulimina pseudospinescens accumulates intracellular nitrate stores and that these can be respired to dinitrogen gas, indicating that the understanding of the complexity of the marine nitrogen cycle is far from complete.
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Anaerobic ammonium oxidation in an estuarine sediment
TLDR
The present study confirms the link between the presence of bacteria affiliated with candidatus S. sorokinii and the anammox reaction in marine environments and proposes that the lower contribution of anamm ox in Randers Fjord is linked to the higher availability of easily accessible carbon, which sup- ports a higher population of denitrifying bacteria.
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Widespread functional anoxia in the oxygen minimum zone of the Eastern South Pacific
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Diffusive and total oxygen uptake of deep-sea sediments in the eastern South Atlantic Ocean: in situ and laboratory measurements
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Measurements of oxygen tension in the rat kidney after contrast media using an oxygen microelectrode with a guard cathode.
TLDR
The oxygen tension (PO2) in the rat kidney was studied by modified Clark microelectrodes by measuring changes in the renal cortex and outer medulla after intravenous injections of the X-ray contrast medium diatrizoate.
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