Freshwater contamination remains a challenging issue for the sustainable management of wetland ecosystems. This study aims to evaluate water quality Jhilmila Lake, Kanchanpur, Nepal by adopting standard test procedures, geochemical indices, and multivariate statistical analysis. The surface samples were collected during postmonsoon season in 2018 assess hydrochemical parameters such as pH, elec...

1. The drinking rate of the saline-water mosquito larva Aedes taeniorhyncus (100 nl.mg-1.h-1) is unaffected by the salinity of the external medium, but is directly proportional to the surface area of the animal. 2. Haemolymph Na+, Mg2+, K+, Cl-, SO42- and osmotic concentrations were measured in larvae adapted to 10%, 100% and 200% seawater and were found to be regulated within a narrow range. ...

Subduction zones modulate the chemical evolution of the Earth's mantle. Water and volatile elements in the slab are released as fluids into the mantle wedge and this process is widely considered to result in the oxidation of the sub-arc mantle. However, the chemical composition and speciation of these fluids, which is critical for the mobility of economically important elements, remain poorly c...

Paenibacillus ferrarius CY1T (= KCTC 33419T = CCTCC AB2013369T) is a Gram-positive, aerobic, endospore-forming, motile and rod-shaped bacterium isolated from iron mineral soil. This bacterium reduces sulfate (SO42-) to S2-, which reacts with Cd(II) to generate precipitated CdS. It also reduces the toxic chromate [Cr(VI)] and selenite [Se(VI)] to the less bioavailable chromite [Cr(III)] and sele...

By analyzing the mass concentrations and compositions of atmospheric PM2.5 in Shaoxing from December 2019 to February 2020, characteristics carbon-containing components, water-soluble ions metal elements were obtained. NO3−, OC, SO42− NH4+ main components winter. The OC/EC ratio was 3.27, which proved existence SOC. proportion SOC OC 47.3%, showed that secondary sources made a significant contr...

Anaerobic oxidation of methane (AOM) is one the major processes oxidizing in marine sediments. Up to now, extensive studies about AOM coupled sulfate reduction have been conducted because SO42− most abundant electron acceptor seawater and shallow However, other terminal acceptors AOM, such as NO3−, NO2−, Mn(IV), Fe(III), are more energetically favorable than SO42−. Iron oxides, part components ...