Repositorio Académico de la Universidad de Chile: Recent submissions
Now showing items 44381-44400 of 98648
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(Elsevier Ltd, 2017)© 2016 Elsevier LtdThe structural and up-conversion properties of Er3+ doped BaTiO3 phases have been studied. All phases were synthesized using the sol-gel process. X-ray powder diffraction (PXRD), Raman spectra, scanning ...
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(1989)The influence of electrostatic solvent effects on the barrier for the internal return rearrangement in the allyl–fluoride model system has been analyzed. The solvent was modeled through the self‐consistent reaction field ...
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(Springer Heidelberg, 2016)© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2016.Local conservation of probability, expressed as the continuity equation, is a central feature of non-equilibrium Statistical Mechanics. In the existing ...
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(MDPI AG, 2016)© 2016 by the authors; licensee MDPI, Basel, Switzerland. Mosaicism for FMR1 premutation (PM: 55–199 CGG)/full mutation (FM: >200 CGG) alleles or the presence of unmethylated FM (UFM) have been associated with a less ...
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(1988)The reaction field (RF) model of solvent effects, implemented within the SCF‐CNDO/2 scheme of calculation, has been applied to analyze the proton transfer in the NH3…HCOOH system in the presence of several polarizable ...
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(Blackwell Publishing Ltd, 2015)© 2015. American Geophysical Union. All Rights Reserved.In the dawn sector, L ∼ 5.5 and MLT ∼ 4-7, from 01:30 to 06:00 UT during the 14 November 2012 geomagnetic storm, both Van Allen Probes observed an alternating sequence ...
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(Elsevier B.V., 2016)© 2016 Elsevier B.V. We present a reconstruction of environmental changes from sediments of high-altitude Laguna Chepical in the subtropical Andes of Central Chile (32°16′S; 70°30′W, 3050 m a.s.l.) for the past 3100 years. ...
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(1993)At temperatures between 25 and 35°C, 100% of Prosopis chilensis seeds germinated within 24 h. At higher temperatures, the germination rate was reduced; at 50°C, seeds did not germinate. After germination at 25°C, the optimal ...
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(1994)The anodic electrochemical behavior of the five members of the 1,4‐dihydropyridine calcium antagonists family was studied. In all of the studied compounds (nifedipine, nitrendipine, nimodipine, nicardipine, and furaldipine), ...
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(1994)The cyclic voltammetric characteristics of two nitroamphetamine derivatives (2‐nitro‐4,5‐dimethoxyamphetamine and 2‐nitro‐4,5‐methylenedioxyamphetamine) have been investigated in different media. In mixed media (aqueous ...
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(Elsevier GmbH, 2015)© 2014 Elsevier GmbH.Retinoic acid (RA), a vitamin A metabolite, has been attributed to relevant functions in adaptive immunity. On T cells, the disruption on RA signaling alters both CD4+ and CD8+ T cells effector function. ...
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(1991)Electrostatic solvation energies of singly charged monoatomic ions may be predicted from the knowledge of an electrostatic potential buildup from a physically meaningful ionic radius. Since the asymptotic behavior of the ...
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(1989)Raman and infrared spectra of evaporated uranyl superphthalocyanine (UO2SPc) films are reported. Raman spectra of UO2SPc (formed by five isoindoline subunits) depart from the general spectral trends observed in metallated ...
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(1988)Raman and infrared spectra of four α,β‐unsaturated ketones were studied. Surface‐enhanced Raman spectra were obtained on colloidal silver with two laser lines (514.5 and 647.1 nm). Evidence of strong chemisorption on the ...
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(Sociedad Chilena de la Ciencia del Suelo, 2016)© 2016, Sociedad Chilena de la Ciencia del Suelo. All rights reserved.Global warming affects the carbon (C) pools in terrestrial ecosystems, accelerating biological processes that feed back into the phenomenon of climate ...
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(Wiley-Blackwell, 2017)© 2015 Wiley Publishing Asia Pty LtdThe development of sperm cryopreservation has enabled transcendental changes to occur in the reproductive biotechnology of both mammals and fish; it has become a basic tool for animal ...
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(1972)Ground and excited singlet state dipole electric π polarizabilities of a set of conjugated molecules are calculated. Second order perturbation theory is used in the Epstein–Nesbet and Möller–Plesset versions. Hückel and ...
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(1994)In this work, a way to approximate the correlation energy functional starting from a model correlation factor is shown. The problem is addressed by using formally exact properties of the second‐order density matrix and ...
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(1990)The Self Consistent Reaction Field (SCRF) theory of electrostatic medium effects representation is used as the basis to derive the molecular orbital energy shifting induced by electrostatic external effects, coming from ...
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(1979)Quadrupole moments, dipole quadrupole polarizability A, and quadrupole polarizability C values have been obtained for a set of organic molecules, in both the ground and first singlet excited states, by means of ...
