منابع مشابه
study on the transport of sediment oxygen demand -related organicmatter in bottom sediment system
approach of organic material anaerobic biodegradation and species of organic matter in sediment are discussed, and then a classifying method of the species is proposed on a new viewpoint. the pore water sediment oxygen demand (sod) numerical model in bottom sediment system is proposed originally, which differs from other advection-dispersion-sorption (ads) model in adding a sod-creating term. t...
متن کاملAn autonomous, bottom-transecting vehicle for making long time-series measurements of sediment community oxygen consumption to abyssal depths
We have developed and successfully collected data with a unique, bottom-transecting vehicle (ROVER) that permits the first long time-series measurements of sediment community oxygen consumption (SCOC). This instrument has the, following capabilities: (1) it operates as an autonomous, free vehicle on the sea floor to 6,000-m depth for periods up to 6 months; (2) it transits across the sea floor,...
متن کاملReversible decrease of oxygen consumption by hyperoxia.
The hemodynamic and metabolic effects of 90 minutes normobaric hyperoxia were studied in 20 critically ill patients (11 septic, 9 nonseptic) requiring mechanical ventilation with inspired O2 fraction (FIO2) less than 0.40. Thirty minutes after increasing the FIO2 to 1.0, arterial PO2 had increased from about 100 to about 400 mm Hg, and whole body oxygen uptake (VO2) was decreased 10 percent (p ...
متن کاملOxygen consumption by a coral reef sponge.
Oxygen consumption of the Red Sea coral reef sponge Negombata magnifica was measured using both incubation and steady-state methods. The latter method was found to be the more reliable because sponge activity remained stable over time. Oxygen consumption rate was measured during three levels of sponge activity: full activity, reduced activity and basal activity (starved). It was found that the ...
متن کاملEstimating the effect of burrowing shrimp on deep-sea sediment community oxygen consumption
Sediment community oxygen consumption (SCOC) is a proxy for organic matter processing and thus provides a useful proxy of benthic ecosystem function. Oxygen uptake in deep-sea sediments is mainly driven by bacteria, and the direct contribution of benthic macro- and mega-infauna respiration is thought to be relatively modest. However, the main contribution of infaunal organisms to benthic respir...
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ژورنال
عنوان ژورنال: Doboku Gakkai Ronbunshu
سال: 1992
ISSN: 0289-7806,1882-7187
DOI: 10.2208/jscej.1992.456_83