Uranyl carbonates are one of the largest groups secondary uranium(VI)-bearing natural phases being represented by 40 minerals approved International Mineralogical Association, overtaken only uranyl phosphates and sulfates. carbonate form during direct alteration primary U ores on contact with groundwaters enriched CO2, thus playing an important role in release to environment. The presence has a...

We have determined the crystal structure of ammonium carbonate monohydrate, (NH4)2CO3·H2O, using Laue single-crystal diffraction methods with pulsed neutron radiation. The crystal is orthorhombic, space group Pnma (Z = 4), with unit-cell dimensions a = 12.047 (3), b = 4.453 (1), c = 11.023 (3) Å and V = 591.3 (3) Å(3) [ρcalc = 1281.8 (7) kg m(-3)] at 10 K. The single-crystal data collected at 1...

Citric acid is found along with uranyl in the subsurface of former nuclear facilities because of its use as a decontamination agent in the nuclear industry. Citrate’s metal chelating properties affect the mobility of uranyl in the subsurface and consequently, citrate biodegradation may significantly impact uranyl fate and transport. Under the non-growth conditions considered, low (micromolar) u...

Corynebacterium glutamicum is an industrially important microorganism used for amino acids production. The present work describes the production of L-lysine from Corynebacterium glutamicum IIB-C9 through submerged fermentation process. Fifteen fermentation media were screened in this study for L-lysine production. Out of these fifteen media, FM:13 was found a best one for maximum production of ...

The carbonatation of semi-crystalline [ethylene – glycidyl methacrylate]-based polymers (Lotader® grades) was achieved using carbon dioxide as reagent and quaternary ammonium salts organocatalysts to form cyclic carbonate moieties on...

Ammonium monoethyloxalate (AmEtOx) is proposed as a consolidanting agent for carbonate stones such biomicritic limestone and marble, resulting in the formation of microcrystalline passivating phase calcium oxalate (whewellite weddellite).

We have evaluated the quality of ultrastructural preservation of erythrocyte ghosts achieved under various electron microscopic preparative conditions. Initially, negative staining was used to monitor gross morphology of the ghosts. Of several negative stains used (phosphotungstate, silicotungstate, ammonium molybdate, and uranyl acetate), all but uranyl acetate resulted in fragmentation of mem...

The article studies the process of obtaining carbonate-ammonium nitrate (CAN) based on mixing melt ammonium (NH4NO3) with chalk (СаСО3) and sulfate (NH4)2SO4). For granulation nitrate-sulfate-carbonate prilling method is applied using a tower. Determined composition properties new types fertilizers. It shown that ratio NH4NO3 : СаСО3 (NH4)2SO4 = 100 24 1 product contains 28,03% N, SO3 – 0,50%, ...