Two types of ammonium uranyl nitrate (NH4)2UO2(NO3)4·2H2O and NH4UO2(NO3)3, were thermally decomposed and reduced in a TG-DTA unit in nitrogen, air, and hydrogen atmospheres. Various intermediate phases produced by the thermal decomposition and reduction process were investigated by an X-ray diffraction analysis and a TG/DTA analysis. Both (NH4)2UO2(NO3)4·2H2O and NH4UO2(NO3)3 decomposed to amo...

Jarosite [(Na+, K+, NH4+, H3O+)Fe3(SO4)2(OH)6] is an efficient scavenger for trace metals in Fe- and SO42--rich acidic water. During the biosynthesis of jarosite promoted by Acidithiobacillus ferrooxidans, the continuous supply of high oxygen levels is a common practice that results in high costs. To evaluate the function of oxygen in jarosite production by A. ferrooxidans, three groups of batc...

Abstract. The rapid response to the COVID-19 pandemic led unprecedented decreases in economic activities, thereby reducing pollutant emissions. A random forest (RF) model was applied determine respective contributions of meteorology and anthropogenic emissions changes air quality. result suggested that strict lockdown measures significantly decreased primary components such as Cr (?67 %) Fe (?6...

In this study we characterized ammonia and ammonium (NH3/NH4(+)) transport by the rhesus-associated (Rh) glycoproteins RhAG, Rhbg, and Rhcg expressed in Xenopus oocytes. We used ion-selective microelectrodes and two-electrode voltage clamp to measure changes in intracellular pH, surface pH, and whole cell currents induced by NH3/NH4(+) and methyl amine/ammonium (MA/MA(+)). These measurements al...

Analysis of chemical composition characteristics PM2.5 under different pollution degrees can reveal the changes sources. In order to make clear evolution process compositions in autumn and winter, samples were continuously collected analyzed at Liaocheng city, China. The classified as clean days (CLD), mild-moderate (MMD) severe-serious (SSD). It was concluded that with increase degrees, concen...

In Japan, various countermeasures have been undertaken to reduce the atmospheric concentration of fine particulate matter (PM2.5). We evaluated extent which these were effective in reducing PM2.5 concentrations by analyzing long-term trends major components and their emissions Nagoya City. decreased 53% over 16-year period from fiscal years 2003 2018 Elemental carbon (EC) was component with gre...

Aim: The study aimed to investigate the impact of rainwater on acidity levelsto monitor acid deposition and identify sources pollutant that affect concentrations rainwater. Methodology Results: One unit sampler in each location was employed, andsamples were taken National Research Innovation Agency laboratory (BRIN) for analysis quality including acidity/pH degree, conductivity, ion concentrati...

The responses of macroalgae to ocean acidification could be altered by availability of macronutrients, such as ammonium (NH4+). This study determined how the opportunistic macroalga, Ulva australis responded to simultaneous changes in decreasing pH and NH4+ enrichment. This was investigated in a week-long growth experiment across a range of predicted future pHs with ambient and enriched NH4+ tr...

A significant amount of ammonium (NH4+) is absorbed by the colon. The nature of NH4+ effects on transport and NH4+ transport itself in colonic epithelium is poorly understood. The goal of this study was to elucidate the effects of NH4+ on cAMP-stimulated Cl- secretion in the colonic cell line T84. In HEPES-buffered solutions, application of basolateral NH4+ resulted in a reduced level of Cl- se...

The objective of this study was to evaluate the treatment efficiency of a gravel contact oxidation treatment system which was newly constructed under the riverbed of Nan-men Stream located at the Shin Chu City of Taiwan. The influent and effluent water samples were taken periodically for the analyses of pH, temperature, dissolved oxygen, total suspended solids, five-day biological oxygen demand...