URANYL(VI) ION
Structural and Spectral (IR, NMR and UV/Visible) Properties of Newly Designed Boronic Acid Derivatives Containing DO3A Sensitive to Uranyl Ion: A DFT and TD DFT Study
... oscillator strength decreases and shift to long wavelength. At the beginning, a single peak has seen and two flattened peaks have formed at with the addition of uranyl ion. These peaks are in the range of ...
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Solution photochemistry of the uranyl ion
... TABLE 4 Deuterium Kinetic Isotope Effects on the Quenching of Excited Uranyl Ions by Alcohol Molecules in Aqueous Solution at 293K... iv The assumption that the 575 nm transient is the l[r] ...
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Voltammetric Investigation on Uranyl Sorption by Alginate Based Material. Influence of Hydrolysis and pH Dependence
... the uranyl concentration in aquatic ecosystem and wastewaters is ...the uranyl ion removal from aqueous solutions by sorption onto low cost and environmental friendly alginate based material in gel ...
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The microbial weathering of uranyl phosphate minerals.
... The uranyl ion is coordinated by four additional oxygen atoms arranged at the equatorial positions of a square bipyramid, with the uranyl ion oxygen atoms at the apices of the ...of ...
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The chloroform solvated uranyl complex of p tert butylhexahomotrioxacalix[3]arene with the chiral counter ion (S) (–) N,α dimethylbenzylammonium
... the uranyl ion with p-tert-butylhexahomo- trioxacalix[3]arene (Masci, 2001; Shokova & Kovalev, 2004) in the presence of triethylamine or DABCO (1,4-diaza- ...this ion (Thue´ry et ...ammonium ...
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How to Bend the Uranyl Cation via Crystal Engineering
... covalent character would be expected to lead to bond stabilization, QTAIM metrics were assessed again after fixing U-N bond lengths (consistent with the DFT simulations described above). When U-N bond distances are ...
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Synthesis, Structure and Photophysical Properties of [UO2X2(O=PPh3)2] (X = Cl, Br, I)
... The chemistry of the actinides has undergone a resurgence of interest over the past decade, with small molecule activation at the forefront of this revolution. 1 Reactivity patterns have been developed that have no ...
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Uranyl Nitrate Induce Histological Changes in The Kidney
... it attractive for military purposes, specifically in armor and projectiles 2 Uranium (uranyl salts), has been used for more than 40 years to stain DNA for electron microscopy. Other stains were favored by electron ...
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The catalytic role of uranyl in formation of polycatechol complexes
... term uranyl association with aromatic molecules with phenolic ligands, this result has a number of significant ...that uranyl ion can act as a catalyst in the pro- cess of polymerization with ...
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Contact Angle Profiles for Droplets on Omniphilic Surfaces in the Presence of Tangential Forces
... for uranyl ions, (ii) the adsorption mechanism of uranyl ions on NaZrP pore surfaces, based on active sites containing hydrogen and sodium ions can be replaced by uranyl ions [29], (iii) the surface ...
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Polyamine functionalised ion exchange resins: Synthesis, characterisation and uranyl uptake
... the uranyl ion, however these did not give statistically justifiable ...a uranyl species corresponding to an anion exchange mechanism was fit, statistical parameters were ...
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STUDY OF EFFECT OF TEMPERATURE ON THE PROPERTIES AND STRUCTURE OF ZIRCONIUM PHOSPHOBORATE ION-EXCHANGER
... The ion-exchanger was prepared by adding zirconyl oxychloride (0.1M) solution to a continuously stirred mixture of boric acid solution (0.1M) and phosphoric acid solution (0.1M) at 60 0 C, in the volume ratio ...
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Tweets About Tornado Warnings: A Spatiotemporal And Content Analysis
... Today, there are still a few fluorine bomb calorimeters in use, however the technique is all but extinct. That is not to say that interest in solid-state fluorides has waned however. In recent years, chemists have ...
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Enhanced imaging of lipid rich nanoparticles embedded in methylcellulose films for transmission electron microscopy using mixtures of heavy metals
... 3% uranyl acetate and 900 μ l parts 2% ...3% uranyl acetate was added to 900 μ l volume of MC followed by an addition 100 μ l volume containing deionized water and varying volumes of PTA and STA ...
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Comparative Investigation of Alternative Negative Staining Reagents in Bacterial Morphological Study
... In the electron microscope staining method that also includes negative stain- ing, it is common worldwide to use uranium acetate [4] [5]. Since it is extremely difficult to purchase new uranium acetate at a research ...
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Study of the Electric Explosion of Titanium Foils in Uranium Salts
... at%), this procedure gave an error of determination of trace impurities of about 10-15%. The accuracy of de- termination of the isotope composition of elements was 1.5-2% for minor isotopes and less than 1% for principal ...
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An EXAFS and HR XANES Study of the Uranyl Peroxides [UO2(η2 O2)(H2O)2] nH2O (n = 0,2) and Uranyl (Oxy)hydroxide [(UO2)4O(OH)6] 6H2O
... some uranyl minerals and we noted that the electronic structure of studtite and metastudtite were di ff erent, with a band-gap measured at the absorption edge in the diffuse-reflectance UV-vis spectrum of ...
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APPLICATION OF MICROWAVE RADIATION FOR THE DECOMPOSITION OF URANYL NITRATE IN THE SILICA GEL MATRIX
... impregnated 5 or 8 g of KSKG, respectively, preliminarily placed in the Alundum crucibles. The crucible contents were thoroughly mixed and allowed to stand for 20–24 h to attain the uniform distribution of the ...
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Development and application of an assay for uranyl complexation by fungal metabolites, including siderophores
... A linear relationship between the discoloration of the dyed agars and the amount of siderophore added was observed for both the CAS-Fe3⫹ 䡠 HDTMA agar and the CAS-UO22⫹ 䡠 HDTMA agar R2 ⫽ [r] ...
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Modelling uranyl chemistry in liquid ammonia from density functional theory
... pentaammine complex is more stable than the hexaammine, in keeping with experimental results. The experimental trends for the formation of dihalide complexes are also well reproduced. Our proposed protocol is ...
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