Sulfate particles play a key role in the air quality and the global climate, but the heterogeneous formation mechanism of sulfates on surfaces of atmospheric particles is not well established. Carbonates, which act as a reactive component in mineral dust due to their special chemical properties, may contribute significantly to the sulfate formation by heterogeneous processes. This paper present...

in order to evaluate the effect of humic acid and zn on the grape yield and mineral concentration, a factorial experiment was conducted based on a randomized complete block design with three replications. the study was done on 20 years old grapevines in the farsan region from chaharmahal and bakhtiari province in 2013-2014. each of the factors, humic acid and zinc sulfate, were applied in three...

The rice crop intensification led to soil degradation and yield decline in the Mekong Delta, Vietnam. Therefore, it is necessary classify fertility identify constraints for proper use. legend classified by World Reference Based was converted Fertility Capability Classification system. recommendations appropriate services are suggested. findings indicate seven primary categories, ten diagnostic ...

A novel neutrophilic metalloprotease was isolated from Pseudomonas sp. DR89 isolate which was identified ina mineral spring in Iran. The enzyme was purified from the isolate to 21-folds in a three-step procedure involving ammonium sulfate precipitation, Q-Sepharose ionic exchange and Sephadex G-100 gel filtrationchromatography. Resuts showed that the enzyme was active at high temper...

The effect of dehydration on the coordination and speciation of sulfate at the Fe-(hydr)oxide-H2O interface was investigated using molecular orbital/density functional theory (MO/DFT) and Fourier transform infrared (FTIR) spectroscopy. IR frequency calculations were performed at the UB3LYP/6-31+G(d) level of theory for potential sulfate (bidentate bridging, monodentate, and H-bonded) and bisulf...

The Olympia Undae sand sea contains the largest known deposit of gypsum discovered on surface Mars. origin this gypsum, a hydrated sulfate mineral requiring liquid water for its formation, remains largely unconstrained. We examine hypothesis that was derived from early-Amazonian aged Basal Unit, which is suggested to contain sulfates. Previous attempts detect sulfates in Unit using CRISM and OM...

Abstract. Aerosol particles were collected at various altitudes in the Arctic during Polar Airborne Measurements and Regional Climate Model Simulation Project 2018 (PAMARCMiP 2018) conducted early spring of 2018. The composition, size, number fraction, mixing state individual aerosol analyzed using transmission electron microscopy (TEM), their sources transport evaluated by numerical model simu...

The precipitation of carbonate minerals induced by halophilic bacteria has aroused wide concern. The study aimed to investigate the characterization and process of biomineralization in high salt systems by halophilic Chromohalobacter israelensis LD532 (GenBank: KX766026) bacteria, isolated from the Yinjiashan Saltern in China. Carbonate minerals were induced in magnesium sulfate and magnesium c...

A number of recent studies have shown that iron dissolution in Fe-containing dust aerosol can be linked to source material (mineral or anthropogenic), mineralogy, and iron speciation. All of these factors need to be incorporated into atmospheric chemistry models if these models are to accurately predict the impact of Fe-containing dusts into open ocean waters. In this report, we combine dissolu...

Diethyldithiocarbamate (DDTC) is employed in the sulfide ore flotation process due to its excellent collection performance. Herein, we investigated interfacial adsorption behavior of DDTC on four main mineral phases high-sulfur residue: sulfur, pyrite, sphalerite, and lead sulfate. The H2O, namely, structure energy electron localization function cross section, were explored using density theory...