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Showing 1 to 19 of 19 for “"sodium salts"”.
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A high-performance liquid chromatography system with Fenton's reagent for detection of gas-phase hydrogen peroxide
… developed. This method relies on conversion of sodium salicylate to dihydroxybenzoic acid, sodium salts by using Fenton's reagent (a mixture of H2O2 and ferrous iron) under the proper conditions. Hydroxyl radicals generated from Fenton's reagent will react with sodium salicylate and generate …
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1,2-naphthoquinone mono-oximato complexes of ruthenium
… 2-oxima) were prepared by the interaction of the sodium salts of the 112-naphthoquinone mono-oximes with hydrated ruthenium(III) chloride in aqueous tetrahydrofuran.
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Rarity of kidney stones in South Africa's black population : studies of urinary macromolecules, crystal matrix extract containing osteopontin, and bone turnover markers in urine and serum from black and white subjects as a key to understanding this paradox
… hour urine collections. These were analyzed for sodium, potassium, calcium, oxalate, uric acid, citrate, chloride, magnesium, phosphate, sulphate and creatinine using standard laboratory techniques. Urine composition values were used as input data for the calculation of relative supersaturation …
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ΣΧΕΔΙΑΣΜΟΣ ΚΑΙ ΣΥΝΘΕΣΗ ΝΕΩΝ ΠΥΡΕΘΡΟΕΙΔΩΝ
… R:F,CL, CLCH2C6H4R1R2,R1:R2:CL) WITH THE OXIMES SODIUM SALTS. THE RELATIVE LIPOPHILICITY OF THE PRODUCTS WAS DETERMINED ACCORDING TO THE METHOD INTRODUCED BY BRIGGS, USING BIORESMETHRIN AS INTERNAL REFERENCE STANDARD. THA CARBAMIC ACID OXIME ESTERS OF INDANONE AND FLUORENONE WERE ALSO PREPARED BY …
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Development of Property Prediction Methods for Sodium-ion Battery Electrolytes
… project, we model the interaction between the sodium ion and the organic solvents, which are widely used in sodium ion batteries (SIBs). The research mainly focuses on how a sodium cation coordinates with the solvent molecules and how its coordination affects the resulting complex structures …
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Effect of Fatty Acid Modification on Prostacyclin Production in Cultured Human Endothelial Cells (Arachidonate, Elcosapentaenoate)
… of fatty acids (20-150 (mu)M) were supplied as sodium salts bound to bovine serum albumin (3:1 mole ratio) and added to M-199 with 20% fetal bovine serum. Both AA and EPA were readily incorporated into neutral and phospholipid fractions to serve as endogenous precursors for prostacyclin …
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Surface -enhanced Raman spectroscopic studies of organonitriles on copper colloids
… loss of molecular symmetry. Addition of selected sodium salts were used to determine the role of aggregation and co-adsorption in surface enhancement. Our SERS data demonstrate that the increase in surface enhancement is primarily influenced by the chemical interaction between the adsorbate and …
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The effects of metal ion and ligand substitution on the spectroscopic properties of metal complexes.
… of the spectra of the β-ketoenolates, their sodium salts and the copper complexes. The effect of ligand substitution on the infrared spectra of Cu(II) benzoylacetanilide complexes and their methanol adducts is used to assign copper-oxygen stretching frequencies. The effect of ligand …
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Nutritional requirements of Treponema denticola and Treponema vincentii
… and a lipid fraction were required for growth. Sodium salts of either oleic acid (cis-18:1) or elaidic acid (trans-18:1), added to 0.4% delipified alpha globulin supplemented media at a final concentration of 0.04 mg/ml, replaced the alpha globulin lipids required for optimal growth of these two …
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Synthesis, Properties, and Reactivity of Pentafluorophenyl Substituted Cyclopentadienes and Their Transition Metal Complexes
… cyclopentadienes are prepared by the reaction of sodium cyclopentadienide and hexafluorobenzene (C6F6) under varying conditions. Corresponding C6F5-substituted cyclopentadienyl ligands (sodium salts) are obtained upon deprotonating the dienes with NaH. Complexes of Mn(I), Re(I), Fe(II), Co(II), …
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N9 Alkylation and Glycosylation of Purines; A Practical Synthesis of 2-Chloro-2'-deoxyadenosine
… chloride using the sodium salt method usually gave a mixture of both anomers. Lipophilic groups were introduced into the imidazole ring of 6-(imidazol-1-yl)purine derivatives to increase the solubility of the sodium salts in moderately polar solvents. Differential …
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On Clay Minerals: Adsorption and Modification
… in contrast to the lack of adsorption of the sodium salt. This `cation bridging' by monovalent ions is a novel finding of the work. Further investigations with added cations revealed potassium to also mediate adsorption, and probed the importance of the ratio of cations in solution. The sodium …
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Characterization of polymeric membranes: sulfonated polysulfones
… increased from 0.6% for polysulfone to 19.2% for sodium salt of sulfonated polysulfone with D.S. of 1.0, and 12.2% for potassium salt of sulfonated polysulfone with D.S. of 1.0. The contact angle of water on polysulfone membranes was 75.1°. The contact angle of water decreased to 25.5° and 60.3° …
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Effects of DDT and 2,4-D (Sodium Salt) on Various Enzymes of Micropterus salmoides
No abstract prepared.
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Chemical and physical effects of ultrasound: sonoluminescence and materials
… emissions by doping H2SO4 and H3PO4 with sodium salts, which provides the first experimental evidence for the injected droplet model over the heated-shell model for cavitation. Effective emission temperatures measured based on excited OH• and PO• emission indicate that there is a …
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The release of nicotine from chewing gum formulations
… in a lower release. The addition of 0.1 % sodium Jauryl sulphate to the artificial saliva was found to double the release of nicotine compared to the use of artificial saliva and water alone. Although altering the dissolution volume and the starting pH did not affect the release. The …
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Physicochemical characterisation of cyclodextrin-drug complexes
… drugs (NSAIDs), (S)-naproxen and the sodium salts of diclofenac and meclofenamic acid; and (L)-menthol, a compound used in many pharmaceutical preparations. The chosen host molecules were ,β-cyclodextrin, γ-cyclodextrin, heptakis(2,6-di-O-methyl)-, β-cyclodextrin (DIMEB) and …
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The Investigation of Primary and Secondary Modifiers in the Extraction and Separation of Neutral and Ionic Pharmaceutical Compounds with Pure and Modified Carbon Dioxide
… the addition of ion-pairing additives. Several sodium salts of alkylsulfonic acids varying in lipophilicity and concentration were investigated. The addition of 1-heptanesulfonic acid, sodium salt, in methanol, in a 5:1 mole ratio of reagent to analyte was shown to be the most useful in …
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Ion specific effects on charged interfaces
… (1888), who observed the specific effect of salts in promoting egg white proteins precipitation. Nowadays we are aware that ion specific effects are ubiquitous in all fields of science and technology where electrolytes play a role. Until few years ago the occurrence of ion specific …