The SLC4A1/AE1 gene encodes the electroneutral Cl(-)/HCO(3)(-) exchanger of erythrocytes and renal type A intercalated cells. AE1 mutations cause familial spherocytic and stomatocytic anemias, ovalocytosis, and distal renal tubular acidosis. The mutant mouse Ae1 polypeptide E699Q expressed in Xenopus oocytes cannot mediate Cl(-)/HCO(3)(-) exchange or (36)Cl(-) efflux but exhibits enhanced dual ...

Each year, millions of hatchery-raised fish are stocked into streams and rivers worldwide, yet the effects of hatchery-raised fish on stream nutrient cycles have seldom been examined. We quantified the influence of supplemental nonnative fish stocking, a widespread recreational fishery management practice, on in-stream nutrient storage and cycling. We predicted that supplemental, hatchery-raise...

Abstract. The Svalbard archipelago, located at the Arctic sea-ice edge between 74 and 81? N, is ?60 % covered by glaciers. region experiences rapid variations in atmospheric flow during snow season (from late September to May) can be affected air advected from both lower higher latitudes, which likely impact chemical composition of snowfall. While long-term changes chemistry have been documente...

Futile plasma membrane cycling of ammonium (NH4 ) is characteristic of low-affinity NH4 + transport, and has been proposed to be a critical factor in NH4 + toxicity. Using unidirectional flux analysis with the positronemitting tracer N in intact seedlings of barley (Hordeum vulgare L.), it is shown that rapid, futile NH4 + cycling is alleviated by elevated K supply, and that low-affinity NH4 + ...

As the largest tributary of Shiyang River, with average annual inflow total runoff accounting for 23%, Xiying River has representative mountain inland rivers in Northwest China. Using samples collected this basin from September 2016 to October 2017, water chemical composition and ion source characteristics river were studied. The results show that is weakly alkaline, pH 8.0 TDS 179.29 mg·L−1. W...

This work analyzes the role of natural groundwater, as well effect HCO3−, Ca2+, Mg2+, K+, SO42- and Cl− concentrations, upon photocatalytic nitrate reduction using ilmenite catalyst oxalic acid hole scavenger. The removal selectivity towards N2 are significantly limited compared to previous experiments ultrapure water matrix. Calcium (Ca2+), bicarbonate (HCO3−) pH claimed major controlling fact...

The total suspended particulate (TSP) samples were collected from April 2013 to April 2014 at the urban location of Pokhara valley in western Nepal. The major aims were to study, quantify, and understand the concentrations and variations of TSP and major water-soluble inorganic ions (WSIIs) in the valley with limited data. The annual average TSP mass concentration was 135.50 ̆ 62.91 μg/m3. The a...

Kaolinite is one of the principal rare earth element (REE) ion-adsorption clays that hosts a wide range elements, including Dy(III) as representative example. Ammonium sulfate typical salt used to leach REEs. Due carbon dioxide emissions which occur during ammonia production, it urgently necessary develop low environmental pollution leaching agents can replace (NH4)2SO4. MgSO4 regarded most pro...

A six-point primary sere developed on sand dunes and a four-point secondary sere developed on old fields were studied to examine the regulation of nitrification in succession. Soils from sites along the seres were incubated in funnel-microlysimeters leached weekly with NH4CI and other nutrient solutions. Nitrate output in soils from the five youngest sites along the primary sere was rapidly sti...