Buscar
Mostrando ítems 49541-49550 de 120900
Activity of alumina supported Fe catalysts for N2O decomposition: effects of the iron content and thermal treatment
(Sociedad Chilena de Química, 2017)
The activity of Fe2O3/Al2O3 catalysts prepared by impregnation of Al2O3 with different amounts of Fe and calcination temperatures (650 and 900 degrees C) in the direct N2O decomposition reaction was studied. High calcination ...
Effects of Carvedilol upon intra- and interventricular synchrony in patients with chronic heart failure
(EXCERPTA MEDICA INC, 2005-07-15)
Radionuclide isotopic ventriculography with phase analysis was performed in 30 patients with stable heart failure (HF), determining left ventricular (LV) and interventricular contraction synchrony at baseline and after 6 ...
Assessment of the hydrolytic degradation of lovastatin by HPLC
(SOCIEDAD CHILENA DE QUIMICA, 2005-12)
In this work an HPLC stability-indicating method was developed and applied to study the hydrolytic behaviour of lovastatin in different simulated fluids. The selected chromatographic conditions were a C-18 column, ...
Kinetics of copper removal from acidic mine drainage by a liquid emulsion membrane
(PERGAMON-ELSEVIER SCIENCE LTD, 2005-11)
Copper was removed from an acidic mine drainage (AMD) using a liquid emulsion membrane contactor. The acidic drainage was a harmful natural acidic solution generated by bioleaching and chemical leaching of copper and iron ...
Sleep enhances inhibitory behavioral control in discrimination learning in rats
(Springer, 2014)
Sleep supports the consolidation of memory,
and it has been proposed that this enhancing effect of
sleep pertains in particular to memories which are encoded
under control of prefrontal–hippocampal circuitry into ...
Topological and flat-band states induced by hybridized linear interactions in one-dimensional photonic lattices
(American Physical Society (APS), 2020)
We report on a study of a one-dimensional linear photonic lattice hosting, simultaneously, fundamental and dipolar modes at every site. We show how, thanks to the coupling between different orbital modes, this minimal model ...
PHOTOSPHERIC MAGNITUDE DIAGRAMS FOR TYPE II SUPERNOVAE: A PROMISING TOOL TO COMPUTE DISTANCES
(The American Astronomical Society, 2014)
We develop an empirical color-based standardization for Type II supernovae (SNe II), equivalent to the classical surface brightness method given in Wesselink. We calibrate this standardization using SNe II with host galaxy ...
Electroencephalographic characterization of pentylenetetrazole kindling in rats and modulation of epileptiform discharges by nitric oxide
(Springer, 2014)
Epileptogenesis is a progressive process which
culminates with spontaneous, recurrent and unpredictable
epileptic seizures due to enhanced neuronal excitability.
Well-characterized animal models of this process are ...
Evidence for asymmetric distribution of circumstellar material around type Ia supernovae
(2012-08-01)
We study the properties of low-velocity material in the line of sight toward nearby Type Ia supernovae (SNe Ia) that
have measured late phase nebular velocity shifts (vneb), thought to be an environment-independent ...
Zinc oxide/carboxylic acid lamellar structures
(2011)
Hybrid organic-inorganic semiconductor nanocomposites of layered zinc oxide/carboxylic acids were fabricated. Products are pure phases with structures constituted by double-layer sheets of the inorganic component sandwiched ...