This contribution deals with a novel anaerobic-anoxic reactor for biological nutrient removal (BNR) from wastewater, termed AnoxAn. In the AnoxAn reactor, the anaerobic and anoxic zones for phosphate removal and denitrification are integrated in a single continuous upflow sludge blanket reactor, aiming at high compactness and efficiency. Its application is envisaged in those cases where retrofi...

Benthic nitrogen cycling, including nitrification, N-loss, and other transformations, plays a crucial role in the marine budget. However, studies on benthic cycling mainly focus marginal seas, while attention to deep ocean, which occupies largest area of seafloor, is severely lacking. In this study, we investigate Kuroshio Extension region (KE) northwest Pacific Ocean at water depths greater th...

In the modern ocean, U reduction and incorporation into anoxic sediments imparts a large isotopic fractionation of approximately +0.6‰ that shifts seawater δ 238 value ( U/ 235 U, expressed as per mil deviation relative to CRM-112a) continental runoff. Given long residence time in oceans (∼400 kyr), composition carbonates (taken proxy for seawater) reflects global balance between other sinks. T...

this study investigates the contributions of atlantic ocean to june-august rainfall over uganda and western kenya (ku). the study has utilized the datasets including precipitation from the global precipitation climatology centre, north atlantic oscillation index (naoi), south atlantic ocean dipole index (saodi), era-interim reanalysis, and the atlantic ocean sea surface temperature (sst). singu...

Geochemical redox proxies indicate that seafloor anoxia occurred during the latest Ordovician glacial maximum, coincident with second pulse of Late mass extinction. However, expanded in a climate strikingly contrasts warming-associated Mesozoic anoxic events and raises questions as to both causal mechanism ocean deoxygenation its relationship Here we firstly report iodine-to-calcium ratio (I/Ca...

Abstract This study focuses on a condensed sequence of alternating carbonate–clastic sediments the Barrington Member, Beacon Limestone Formation (latest Pliensbachian to early Toarcian) from Somerset (SW England). Abundant ammonites confirm (apart absence Clevelandicum and Tenuicostatum ammonite subchronozones) presence Hawskerense Subchronozone Fallaciosum–Bingmanni subchronozones. Well-preser...

Oceanic Anoxic Event 2 (OAE2) exemplifies an episode of global oceanographic and climatic changes in the mid-Cretaceous greenhouse. However, timing mechanism its initiation remain elusive. Here we report a high-resolution initial osmium isotope (187Os/188Osi, Osi) δ13Corg record from expanded OAE2 interval southern Tibet, China that was deposited Southern Hemisphere. The Osi documents episodic,...

Anoxic encephalopathy is frequently encountered in the medical intensive care unit (ICU). Cerebral edema as a result of anoxic brain injury can result in increased attenuation in the basal cisterns and subarachnoid spaces on computerized tomography (CT) scans of the head. These findings can mimic those seen in acute subarachnoid hemorrhage (SAH) and are referred to as pseudosubarachnoid hemorrh...

Natural and synthetic estrogens present in municipal wastewater can be biodegraded during treatment, particularly in activated sludge. The objective was to assess the extent of transformation of 17-beta-estradiol (E2) and 17-alpha-ethinylestradiol (EE2) by nitrifying activated sludge and evaluate potential relationships between availability of oxygen, nitrification rate, and estrogen removal. F...