anoxia

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Related to anoxic: anoxic zone
  • noun

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References in periodicals archive ?
However, simultaneous nitrification and denitrification (SND) has recently been found at various types of process units with advantages over the conventional processes like two-step process (aerobic/anoxic phases) such as the cost saving for anoxic tank and the addition of external carbon sources during the denitrification (Munch et al.
Negative Ce anomalies are strong indicators of an oxic depositional environment (often followed by HREE enrichments and attributed to open ocean environments), while lack of Ce anomaly or positive Ce anomaly (together with LREE- to MREE-enriched profiles) would suggest anoxic conditions.
2] as an important mechanism of regenerating reactive Fe oxides in anoxic habitats, but also by excreting easily-available carbon substrates such as alcohols, sugars, and organic acids, which stimulate Fe(III) reduction as a carbon source and simultaneously, increase Fe(III) availability via acting as organic chelators maintaining Fe(III) in a soluble form and allowing a contact with microbial communities in surrounding anoxic micro- zones [10].
17 [per thousand] [17], which have been associated with other Early Toarcian Oceanic Anoxic Events (OAEs) in Europe.
Megan was diagnosed with Reflex Anoxic Seizures in September 2010 and has since experienced many seizures, with and without warning, at school.
The 18 papers discuss such topics as using cement-treated lightweight soils made from dredged clay, incorporating public health impact assessment into the optioneering process for a dredge licensing application, remediating river sediments containing dioxins and other chemical compounds as part of a large watershed restoration project, evaluating adverse effects of anoxic sediments on aestivating sand lance (Ammodytes personatus), sediment contamination due to oil-suspended particulate matter aggregation during oil spills in coastal waters, and evaluating the oil absorbing ability of peat using a column test.
A 29-year-old Caucasian man with previous anoxic brain injury presented to our facility with a 3-day history of nausea and vomiting.
It was only when she contacted a Warwickshire charity called STARS (Syncope Trust And Reflex anoxic Seizures) that she got the answer she desperately needed in 2002.
The lake bottom is very still and anoxic, so these layers have remained undisturbed over tens of thousands of years.
The team theorized that the anoxic conditions created by the stressed-out ecosystem, combined with sulphides from the ash, led to the creation of mercury sulphides, which precipitated out of the water.
The objective of this study was to examine the changes in digestive gland morphology in response to anoxic conditions at summer temperatures with special consideration for changes in whole-body anaerobic bacteria counts, dominant bacterial flora, and the ability to recover after an extended exposure.
According to Omoregie, recent results revealed that the oxygen levels needed to sustain the juvenile oysters was a remarkable 16 days when exposed to hydrogen sulphide in the water, and 21 days under anoxic conditions.
We don't have the cause for why the oceans suddenly went anoxic.
The charity Syncope Trust And Reflex anoxic Seizures (Stars) said around 120,000 people suffer blackouts each year in the UK.