Browsing by Title
Now showing items 27191-27210 of 92774
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(Universidad de Chile. Facultad de Economoía y Negocios, 2011-04)Since 1975 Chilean exports have boomed growing at a 6% average rate per year in real terms. In this paper we use manufacturing Chilean data at the plant level for years 1990 to 2007 to investigate the relationship between ...
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(Elsevier, 2015)The activity of the ADP-dependent glucokinase from Thermococcus litoralis (TlGK) relies on the highly conserved motifs NXXE (i.e. Asn-Xaa-Xaa-Glu) and HXE (i.e. His-Xaa-Glu). Site-directed mutagenesis of residues Glu279 ...
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(Nature, 2017)Rhenium and osmium isotopes have been used for decades to date the formation of molybdenite (MoS2), a common mineral in ore deposits and the world's main source of molybdenum and rhenium. Understanding the distribution of ...
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(Wiley-Blackwell, 2016)The generation of abnormally high levels of reactive oxygen species (ROS) is linked to cellular dysfunction, including neuronal toxicity and neurodegeneration. However, physiological ROS production modulates redox-sensitive ...
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(NATL ACAD SCIENCES, 2003-11-25)GFP-promoter experiments have previously shown that at least nine genes encoding potassium channel subunits are expressed in Caenorhabditis elegans muscle. By using genetic, RNA interference, and physiological techniques ...
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(Elsevier Science Publishers B. V., 1990)The ribosomal protein S4 from Escherichia coli is essential for initiation of assembly of 30S ribosomal subunits. We have undertaken the identification of specific features required in the 16S rRNA for S4 recognition by ...
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(1994)Vertebral artery dissection seems to be a frequent cause of stroke in young adults. We report a 34 years old female that suffered a cardiac arrest while practicing aerobics, with complete recovery and four months later ...
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(OXFORD UNIV PRESS, 2006-07)Objectives: The aim of this work was to study the distribution of Trypanosoma cruzi clones after treatment failure with itraconazole or allopurinol in infected humans. Methods: Blood samples from treated and untreated ...
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(Wiley-Blackwell, 2015)The auditory sensitivity in three species of the anuran genus Alytes (Alytidae) was examined to determine patterns of intra- and interspecific variation, relating these measurements to behavioural preferences measured in ...
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(Amer Physical Soc., 2016-06-13)We establish a stochastic thermodynamics for a Fermionic level driven by a time-dependent force and interactingwith initially thermalized levels playing the role of a reservoir. The driving induces consecutive avoided ...
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(American Physical Society, 2019)© 2019 American Physical Society.We show that a cyclic unitary process can extract work from the thermodynamic equilibrium state of an engineered quantum dissipative process. Systems in the equilibrium states of these ...
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Dissipative magnetization textures induced by spin-transfer torques and alternating magnetic fields (Universidad de Chile, 2016)Los materiales ferromagnéticos a escala nanométrica pueden ser manipulados mediante torques por transferencia de espín y/o campos magnéticos oscilatorios. El torque por transferencia de espín es el resultado de la interacción ...
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(Universidad de Chile, 2021)La presente tesis está dedicada a la generación y control de estructuras disipativas inducidas por luz en cristal líquido. Esta monografía se desarrolla entorno a una serie de experimentos desarrollados para lograr diversidad ...
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(Royal Society Publishing, 2018-07-28)
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(Royal Society Publishing, 2018)
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(Royal Society Publishing, 2018)Order–disorder phase transitions driven by temperature or light in soft matter materials exhibit complex dissipative structures. Here, we investigate the spatio-temporal phenomena induced by light in a dye-doped nematic ...
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(American Physical Society, 2014)Macroscopic magnetic systems subjected to external forcing exhibit complex spatiotemporal behaviors as result of dissipative self-organization. Pattern formation from a uniform magnetization state, induced by the combination ...
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(1991)We report our investigations of circulating interleukin (IL) 1β, IL 6 and tumor necrosis factor (TNF)‐α, as well as cell‐associated IL 1α, IL 1β and TNF‐α in plasma and monocytes of 21 patients with sepsis syndrome and 6 ...
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(Blackwell Publishing Ltd, 1996)1. To examine the correlation between chemosensory response and dopamine release induced by hypoxic stimulation, we studied carotid bodies excised from anaesthetized cats. 2. The carotid bodies with their carotid (sinus) ...
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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 ...
