Browsing by Title Artículos de revistas
Now showing items 4826-4845 of 4968
-
(Instituto Químico de Sudáfrica, 1982-01-13)A family of upper bounds for the ground-state second-order energy, derived from the Perturbation Theory, has been obtained. The bounds have been evaluated for the static electric dipole polarizability of the hydrogen atom.
-
(1986)Theoretical stellar structure models find that stars later than ∼dM3 are fully convective. It is widely believed that this should result in reduced non-radiative heating and activity levels, however, the observational ...
-
(2007)Reactive iron is an important prooxidant factor, whereas GSH is a crucial component of a long-term adaptive system that allows cells to function during extended periods of high oxidative stress. In this work, the adaptive ...
-
(Escuela de Ciencias del Mar, 2003)Upwelling shadows are high temperature regions within coastal upwelling systems. In this article its dynamics is described at Mejillones Bay, in the northern Chilean coast, using satellite images and in situ current data. ...
-
(2014)To improve the current understanding of the ammonia distribution in the major urban area of Chile, measurements of atmospheric NH3 were collected in Santiago during three sampling periods (25 April to 27 May, 11 to 26 ...
-
(Elsevier, 2020)Two hitherto unknown organometallic compounds with antitumor activity, [Ru(eta(6)-2-(1-propenyl)anisole)(en)(Cl)]PF6 (3) and [Ru(eta(6)-2-(1-propenyl)anisole)(en)(l)]PF6 (4), where en is ethylenediamine, were synthesized ...
-
(ELSEVIER, 2008-11)The use of genomics, proteomics, transcriptomics, metabolomics and other OMICs approaches together with bioinformatics tools allows a global picture of how a microbial cell operates in its community to be obtained. The ...
-
(PERGAMON-ELSEVIER SCIENCE LTD, 2006-02-24)This study presents the outstanding chromatographic selectivity of a porous graphitic carbon support for the separation of four isomeric tropane alkaloids from the stem-bark of Schizanthus grahamii (Solanaceae). Capillary ...
-
(Instituto de Investigaciones Agropecuarias, INIA, 2008-04)Accumulated chilling was estimated by applying three different models to the hourly autumn-winter temperature records from Santiago (33°34 S lat; 625 m.a.s.l.) and Vicuña (30°02´ S lat; 643 m.a.s.l.) for the years 2005 ...
-
(BMJ, 2020)Objective We study the obesity transition by socioeconomic status (SES), gender and age within the Colombian urban population at the country, regional and department levels. Design The study is informed by cross-sectional ...
-
(Elsevier, 2019)Peatlands are key reservoirs of belowground carbon (C) and their monitoring is important to assess the rapid changes in the C cycle caused by climate change and direct anthropogenic impacts. Frequently, information of ...
-
(2006)The distribution and habitat use by carnivores can be assessed by studying their tracks or feces. If these methods are to be used confidently, they should not only unequivocally discriminate among species, but should ...
-
(Taylor & Francis, 2015)The increased frequency and magnitude of natural disasters is producing a growing awareness of the need to incorporate mental well-being and resilience into policy and practice. The present research uses mental well-being ...
-
(CAMBRIDGE UNIV PRESS, 2009-01-20)Studies of recruitment dynamics in meroplanktonic organisms are dependent on the correct identification of each ontogenic stage of each species. This is particularly difficult when studying the larval stages, which are ...
-
(2013)It is widely recognized that macroecological patterns are not independent of the evolution of the lineages involved in generating these patterns. While many researchers have begun to evaluate the effect of ancestor-descendant ...
-
(Universidad Técnica del Estado, 1972-07)Se describe el uso de brebajes preparados con tallos de Banisteriopsis y hojas de Psychotria por la tribu de los Shipibos y en la ciudad de [quitos. El análisis de una muestra de la especie de Banisteriopsis usada, ...
-
(Escuela de Ciencias del Mar, 2017)© 2017, Escuela de Ciencias del Mar. All Right Reserved.The Patagonian toothfish or Chilean sea bass (Dissostichus eleginoides), found in the Southern Ocean surrounding Antarctica, is an important fishery species for Chile. ...
-
(2010)The present study shows the formation and characterization of the ionic-pair between the antibiotic oxytetracycline and the dye crystal violet in ammonia solution pH 9.0 ± 0.2 extracted into chloroform. The characterization ...
-
(2010)The present study shows the formation and characterization of the ionic-pair between the antibiotic oxytetracycline and the dye crystal violet in ammonia solutionpH9.0±0.2 extracted into chloroform. The characterization ...