Browsing by Title Facultad de Ciencias
Now showing items 4773-4792 of 8177
-
(1986)The UV absorption and fluorescence soectral bands of 2-benzoxazolinone and 6-methoxy-2-benzoxazolinone have been recorded in solution at room temperature. The phosphorescence spectral bands, their Quantum yields and mean ...
-
(Springer-Verlag, 1985)The influence of posttraining subcutaneous administration of luteinizing-hormone-releasing hormone (LHRH) was tested on the retention of either active or passive avoidance conditioning in male rats. Injection of LHRH ...
-
(OXFORD UNIV PRESS, 2006-02)Immune surveillance depends on still poorly understood lymphocyte-endothelium interactions required for lymphocyte transendothelial migration into secondary lymphoid organs. The nuclear factor kappa B (NF-kappa B) regulatory ...
-
(2009)The adsorption behavior of polycations at ionic strengths (I) ranging from 0.001 to 0.1 onto silicon wafers was studied by means of ellipsometry, contact angle measurements and atomic force microscopy (AFM). Polycations ...
-
(Universidad de Chile, 2014)
-
(Taylor and Francis Ltd., 2014)© 2014 Taylor & Francis. A family of macrocyclic complexes [M2LnCl2] have been synthesized and characterized (M: CuII or ZnII; Ln: macrocyclic ligand derived from 2-hydroxy-5-methyl-1,3-benzenedicarbaldehyde and different ...
-
(Universisdad de Chile, 2006)Las especies en general, tienen requerimiento específicos a nivel físico,químico, de estructura del hábitat e interactuar con otras especies, ellas responden a determinados rangos de condiciones ambientales entre las cuales ...
-
(Elsevier, 2020)The Ascot an salt pan is an extreme freshwater system in the Southern Altiplano of Chile (17 -22 S). Its origin has been traced to the presence of the paleolake Minchin approximately 0.0117 Ma. Currently, this system has ...
-
(Kluwer Academic Publishers, 1999-07-16)
-
(2002)A unique diterpene 1, was isolated from the altiplane Andean plant Azorella madreporica Clos (Apiaceae). The structure and stereochemistry were established by spectral methods and molecular mechanics calculations. The ...
-
(Cambridge University Press, 2005)
-
(1994)Magellanin, a new triterpene dimer was isolated from Maytenus magellanica. Its structure was elucidated by spectroscopy based on a novel unit combination. © 1994 Harwood Academic Publishers GmbH.
-
(Blackwell Publishing Ltd, 2015)©2015. American Geophysical Union. All Rights Reserved. Remote and in situ observations in the solar wind show that ion and electron velocity distributions persistently present deviations from thermal equilibrium. Ion ...
-
(2009)The (Mn1−xCdx)Cr2S4 phases (0≤x≤0.6) have been synthesized from the corresponding elements at 1123 K. These sampleswere characterized by powder X-ray diffraction (XRD) and magnetic susceptibility. The(Mn1−xCdx)Cr2S4 ...
-
(MDPI, 2020)This article describes the use of beta-cyclodextrin-based carbonate nanosponges (NSs) decorated with superparamagnetic Fe3O4 nanoparticles to study and investigate the potential removal of dinotefuran (DTF) from wastewater. ...
-
(2009)Nucleation and propagation of a domain wall along a modulated wire as a function of its geometry has been investigated. In all the cases, nucleation began at the thicker section and propagated toward the thinner section, ...
-
(Oxford University Press, 2017)As another step towards understanding the long-term evolution of the magnetic field in neutron stars, we provide the first simulations of ambipolar diffusion in a spherical star. Restricting ourselves to axial symmetry, ...
-
(Elsevier, 2016)The observations in the solar wind, which are usually organized in a beta-anisotropy diagram, seem to be constrained by linear instability thresholds. Unexpectedly, under these quasi-stable conditions, there is a finite ...
-
(1989)The magnetization of thin ferromagnetic metal slabs deposited on a paramagnetic metal substrate is investigated by means of a model calculation. The magnetic behavior of the system is described by a single-site Hubbard ...
-
(ELSEVIER, 2006-10-01)Magnetic properties of sulfide spinels derived from the lutetium manganese thiospinel MnLu2S4 are reported. In this first approach, we have partially substituted lutetium by other lanthanides or by some transition metal ...