Browsing by Title
Now showing items 27151-27170 of 92550
-
Dissolution kinetics evaluation of controlled-release tablets containing propranolol hydrochloride (Marcel Dekker Inc., 1999)In the present research, controlled-release propranolol hydrochloride tablets were prepared for twice-daily administration, allowing more uniform plasmatic levels of the drug. Pharmaceutical formulations were prepared with ...
-
(Springer, 2017)Within the earth's atmosphere, methane (CH4) is one of the most important absorbers of infrared energy. It is recognized that coastal areas contribute higher amounts of CH4 emission; however, there is a lack of accurate ...
-
(SPRINGER, 2005-06)Water and dissolved ion transport in mineral tailings was studied at laboratory scale with three different tailings samples. Percolation rate, determined in column experiments, depends mainly on the granulometric distribution ...
-
(UNIV CHICAGO PRESS, 2000-12-10)Observations of the diffuse X-ray background at energies similar to3/4 and 1.5 keV show a large region of enhanced emission around the Galactic center. The origin of this X-ray enhancement is not known, but the best ...
-
(Elsevier, 2017)The ordered weighted average (OWA) is an aggregation operator that provides a parameterized family of operators between the minimum and the maximum. This paper presents the OWA weighted average distance operator. The main ...
-
(EDP Sciences S A, 2021)Aims. Distances are key to determining the physical properties of sources. In the Galaxy, large (>10 000) homogeneous samples of sources for which distance are available, covering the whole Galactic distance range, are ...
-
(The American Astronomical Society, 1988-10-15)New 6 cm continuum and radio recombination line VLA observations as well as CO observations are presented of the bright PN NGC 6302. The H110-alpha line is significantly broader than the H76-alpha line, an effect which is ...
-
(2001-09-10)We present optical and infrared spectroscopy of the first 2 months of evolution of the Type II supernova SN 1999em. We combine these data with high-quality optical/infrared photometry beginning only 3 days after shock ...
-
(Taylor and Francis Ltd., 2015)Background: The explosive growth of urbanisation in Mediterranean ecosystems in Chile has favoured the rapid expansion of exotic plant species, yet factors driving these invasion patterns in adjacent natural areas remain ...
-
(UNIV CHICAGO PRESS, 2008-08-10)We present distance estimates for 11 peculiar Virgo Cluster spiral galaxies based on measurements of the stellar kinematics of their central 2 kpc. Stellar circular velocities were obtained using two- integral dynamical ...
-
(UNIV CHICAGO PRESS, 1994-09-01)We have used observations gathered at CTIO to measure distances by the expanding photosphere method (EPM) to five Type II supernovae. These supernovae lie at redshifts from cz = 1100 km s-1 to cz - 5500 km s-1, and increase ...
-
(Universidad de Chile, 2021)La tesis busca indagar acerca del tema de la soledad como un problema humano y propio de la modernidad a partir de cinco crónicas personales sobre individuos que experimentan la soledad de las urbes.
-
(Universidad de Chile, 2022)La ausencia de un enfoque teórico en la investigación y en el desarrollo de la educación continua a distancia (ECaD) resulta, a juicio de los investigadores, una constante que urge resolver, sobre todo considerando el ...
-
(Universidad de Chile, 2010)
-
(Universidad de Chile, 2023)«Dejar un registro del proceso de titulaciones póstumas en la Universidad de Chile, a fin de contribuir a la memoria colectiva de nuestra universidad y rendir un homenaje a los estudiantes ejecutados y detenidos desaparecidos ...
-
(Universidad de Chile, 2013-11)Desde un enfoque teórico-metodológico constructivista la presente investigación pretende conocer las distinciones que tematizan los mapuche para observar el estado actual del reconocimiento político y las expectativas que ...
-
(Universidad de Chile, 2020)
-
(Universidad de Chile, 2010)
-
(CENECA, 1988)
-
(2018)Chile, desde sus inicios como nación, ha sido construido por un reducido grupo que logró el control político y económico del naciente país, ubicándose de inmediato y a lo largo de la historia en lo más alto de la escala ...
