Buscar
Mostrando ítems 5561-5570 de 13210
Cyclic voltammetric and scanning electrochemical microscopic study of thiolated β-cyclodextrin adsorbed on a gold electrode
(2003)
Potassium ferricyanide (Fe(CN)6]3-) reduction and ferrocenemethanol (Fc-OH) oxidation at a β-cyclodextrin (β-CD)-modified gold electrode were investigated by cyclic voltammetry (CV) and scanning electrochemical microscopy ...
Selective crystallization of calcium salts by poly (acrylate)-grafted chitosan
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2005-06-01)
The biopolymer chitosan was chemically modified by grafting polyacrylamide or polyacrylic acid in a homogeneous aqueous phase using potassium persulfate (KPS) as redox initiator system in the presence of N,N-methylene-bi ...
Differential effects of beta 1 and beta 2 subunits on BK channel activity
(ROCKEFELLER UNIV PRESS, 2005-04)
High conductance, calcium- and voltage-activated potassium (BK) channels are widely expressed in mammals. In some tissues, the biophysical properties of BK channels are highly affected by coexpression of regulatory (beta) ...
Solubilization of p-nitrophenol in aggregates formed by hydrophobically modified polyelectrolytes
(2004)
The solubilization of p-nitrophenol into the hydrophobic microdomains provided by polyelectrolytes carrying alkyl side chains of different length has been investigated in aqueous solutions of pH 5.0 and 8.0. Under these ...
Polymerization of methyl methacrylate in a 3-component cationic microemulsion
(1993)
Methyl methacrylate has been polymerized in three-component o/w microemulsions made with the cationic surfactant dodecyltrimethylammonium bromide (DTAB). The effects of temperature type and concentration of initiator (AIBN ...
Polymerization of methyl methacrylate in a 3-component cationic microemulsion
(1993)
Methyl methacrylate has been polymerized in three-component o/w microemulsions made with the cationic surfactant dodecyltrimethylammonium bromide (DTAB). The effects of temperature type and concentration of initiator (AIBN ...
Differentiation of osmotic and secretory diarrhoea by stool carbohydrate and osmolar gap measurements
(BMJ Publishing Group, 1997)
Clinical features and laboratory tests that determine carbohydrate in faeces were evaluated to determine which was best able to distinguish between osmotic and secretory diarrhoea in infants and children. For this purpose ...
Effect of salt supplementation on amphotericin Bnephrotoxicity
(Elsevier, 1991)
It has been suggested that salt loading protects against amphotericin B-induced nephrotoxicity. The influence of saline loading on the nephrotoxic response to amphotericin B (50 mg/dose given i.v. over 4 hr 3 X/week for ...
Modelo del ambiente tectónico a partir de estudios petrográficos y geoquímicos de la riodacita de Ipapure - Cerro La Teta
(2013)
En la Alta Guajira colombiana, cerca de la frontera venezolana, aflora la “Riodacita de Ipapure – Cerro La Teta” dispuesta en remanentes aislados los cuales están compuesto por dacitas, andesitas, riolitas, tobas y diques. ...
Improving the tolerance of vicia fabaagainst environmental salinity resulted from the irrigation with sea water by using k2 so4 and (nh4)2so4 as chemical osmoregulators.
(Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Biología, 2012)
Vicia faba L. was cultivated with irrigation with 5, 10, 15 and 20% (v:v) sea water. The plants were divided to three groups. The first was irrigated without treatments while the second was treated with 5 mM KNO3 and the ...