The use of Ceramic Matrix Composites (CMCs) in the hottest part of an aero engine promises great improvements in fuel efficiency by decreasing component weight and allowing higher gas inlet temperatures. However, an environmental barrier coating (EBC) is required to protect the CMC from the corr...
The light rare earth elements (LREEs) lanthanum, cerium, neodymium and praseodymium are increasingly used in renewable energy technology and are applicable in portable electronic devices, such as phosphors in lightning applications and in catalysis. The extraction of REEs from virgin ores causes...
The selective leaching of thorium and uranium from monazite with ammonium oxalate was studied at near ambient temperatures, as a function of pH, particle size, phosphate and oxalate concentration, and temperature. The thermodynamic speciation showed that the presence of phosphate seriously restr...
Four different synthetic routes were used to prepare active forms of cerium oxide that are capable of destroying toxic organophosphates: a sol–gel process (via a citrate precursor), homogeneous hydrolysis and a precipitation/calcination procedure (via carbonate and oxalate precursors). The samp...
The current objective of coprecipitating uranium, and minor actinides in order to fabricate a new nuclear fuel by direct (co)precipitation for further transmutation, requires to develop specific technology in order to meet the following requirements: nuclear maintenance, criticity, and potential...
Cerium oxide with an excellent glass polishing efficiency was prepared by annealing carbonate or oxalate precursors. The temperature of calcination was identified as a critical parameter that governs the key properties, including the polishing efficiency, of the polishing powders; conversely, th...
High surface area and porous ceria was produced as a final decomposition product of ammonium cerium(III) oxalate hexahydrate. Thermal processes involved in the decomposition of (NH4)2Ce2(C2O4)4·6H2O on heating up to 500°C in air were monitored by differential thermal analysis (DTA) and thermog...
Rare earth oxalates precipitation is extendedly used in hydrometallurgical processes related to rare earth recycling methods and treatment of radioactive liquid wastes, where rare earth elements are separated from other fission products. For a deeper comprehension of this reactive precipitation ...
The kinetic and mechanistic features of the synthesis of micro structural rods of CeO2 via the oxidative thermal decomposition of cerium oxalate in air and the effect of dry mixing of 10 w/w (%) calcium oxalate with cerium oxalate upon the reaction pathway and mechanism were investigated by ther...
This paper reports the synthesis of large plate-like gypsum (calcium sulfate) dihydrate generated from waste gypsum board via a wet process. Gypsum hemihydrate was formed by dehydrating waste gypsum board in a sodium sulfate solution at 100 °C for 1 h to form needle-like crystals. The large gyp...
Inhibition of calcium oxalate monohydrate (COM) formation and initiation of the dihydrate (COD) phase by osteopontin (OPN) have been proposed to play an important role in preventing kidney stone formation. We have studied the roles of OPN phosphate and carboxylate groups in the modulation of cal...
Platy dicalcium phosphate dihydrate (DCPD, CaPPO4.2H2O) and spherulitic dicalcium phosphate (DCP, CaHPO4), were crystallized in the presence of magnesium ions at physiological pH of 5.61 by a direct and controlled chemical reaction method. The grown crystals were characterized by X-ray diffracti...
Hydroxyapatite (HA) coatings were widely used to improve the poor corrosion resistance, the osteoinduction and osseointegration ability of biodegradable magnesium alloys as biodegradable implants. To further improve the performance of the HA coated biodegradable magnesium alloys, strontium (Sr) ...
Drug interactions in presence of co-solute in aqueous solution have always created an interest in the mind of chemists. The physical properties give an idea of types of interactions taking place in aqueous solution. Volumetric and compressibility are the important physical properties. Keeping th...
In this study, the effects of salicylate on spatial learning and memory, through its effects on autophagy and apoptosis, were evaluated in the presence of the PKA inhibitor H-89. Adult male Wistar rats were divided into experimental groups as follows: salicylate (30, 50, 100 μg/0.5 μl/side, in...
Salicylate is the active ingredient in aspirin, and in high-doses it is used as an experimental tool to induce transient hearing loss, tinnitus, and hyperacusis. These salicylate-induced perceptual disturbances are associated with tonotopic-map reorganization and neural activity modulation, and ...
A mononuclear copper(II) salicylate with bulky substitution [Cu(DTBSA)2(2,2′-bpy)](dmf) (1) (DTBSA = 3,5-di-tert-butyl salicylic acid, 2,2′-bpy = 2,2′-bipyridyl) has been synthesized and characterized with the aid of elemental analysis and infrared, ultraviolet, fluorescence and electron para...
We previously identified salicylate as a novel catalytic inhibitor of human DNA topoisomerase II (topo II; EC 5.99.1.3) that preferentially targets the alpha isoform by interfering with topo II-mediated DNA cleavage. Many pharmaceuticals and compounds found in foods are salicylate-based. We have...
Well-defined single-crystalline lead sulfide nanostructures including nanocubes were synthesized in high yield by a simple hydrothermal solution route. Novel cube-shaped PbS nanocrystals have been achieved using [bis(salicylate)lead(II)]; [Pb(Hsal)2]; and l-cysteain, under the molar ratio [Pb(Hs...
Thioredoxin reductase (TrxR), a major component of the thioredoxin system, makes a critical role in regulating cellular redox signaling and is found to be overexpressed in many human cancer cells. TrxR has become an attractive target for anticancer agents. In this work, three Ru(II) complexes wi...
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