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The rates of ligand exchange into the geochemically important [NpO2(CO3)3](4-) aqueous complex are measured as a function of pressure in order to complement existing data on the isostructural [UO2(CO3)3](4-) complex. Experiments are conducted at pH conditions where the rate of exchange is independent of the proton concentration. Unexpectedly, the experiments show a distinct difference in the pressure dependencies of rates of exchange for the uranyl and neptunyl complexes.
This article was published in the following journal.
Name: Inorganic chemistry
The equilibrium constants for [NpO2·M](4+) (M = Al(3+), In(3+), Sc(3+), Fe(3+)) in μ = 10 M nitric acid and [NpO2·Ga](4+) in μ = 10 M hydrochloric acid media have been determined. The trend in the...
Preservation of biological materials at subzero Centigrade temperatures, cryopreservation, is important for the field of tissue engineering and organ transplantation. Our group is studying the use of ...
Confined water in aqueous solutions of imidazolium-based ionic liquids (ILs) associated with acetate and imidazolate anions react reversibly with CO2 to yield bicarbonate. Three types of CO2 sorption ...
A synthetic layered alkali silicate, magadiite, and a natural montmorillite were found to concentrate indium(III) ion from aqueous solution by ion exchange reactions. The adsorption was examined by th...
Neutron Brillouin scattering and molecular dynamics simulations have been used to investigate protein hydration water density fluctuations as a function of pressure. Our results show significant diffe...
The purpose of this study is to determine the effect of Aqueous mushroom extract (AME) on intra ocular pressure (IOP) in humans or as a potential anti glaucoma drug.
The purpose of this study is to demonstrate decrease in cardiovascular mortality and morbidity in Japanese hemodialysis patients treated with Lanthanum carbonate compared with those with C...
Intraocular pressure (IOP) varies with body position, with a significant increase occurring from the seated to the supine position. Previous research has indicated that the IOP increase ca...
The purpose of this study is to assess the safety of lanthanum carbonate in patients undergoing dialysis who have received lanthanum carbonate in the previous studies and wish to continue ...
This study is being conducted to assess any potential differences in the absorption and excretion between two lanthanum carbonate formulations. This study is also being done to assess the ...
Solutions prepared for hemodialysis. The composition of the pre-dialysis solution may be varied in order to determine the effect of solvated metabolites on anoxia, malnutrition, acid-base balance, etc. Of principal interest are the effect of the choice of buffers (e.g., acetate or carbonate), the addition of cations (Na+, K+, Ca2+), and addition of carbohydrates (glucose).
Solutions prepared for exchange across a semipermeable membrane of solutes below a molecular size determined by the cutoff threshold of the membrane material.
Solutions that have a greater osmotic pressure than a reference solution such as blood, plasma, or interstitial fluid.
Solutions that have a lesser osmotic pressure than a reference solution such as blood, plasma, or interstitial fluid.
Separation technique in which the stationary phase consists of ion exchange resins. The resins contain loosely held small ions that easily exchange places with other small ions of like charge present in solutions washed over the resins.