Browsing by Title Facultad de Ciencias
Now showing items 6143-6162 of 8181
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(Comite de Investigaciones Científicas y Tecnológicas de la Universidad Técnica del Estado, 1971)Se separaron seis fracciones químicamente diferentes de hojas de Solanum malacoxylon Sendtner por extracción con solventes selectivos, y se ensayó la acción de estas fracciones sobre el metabolismode calcio y fósforo ...
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(Bentham Science Publishers B.V., 2017)© 2017 Bentham Science Publishers. More than thirty years have passed since the discovery of the prion protein (PrP) and its causative role in transmissible spongiform encephalopathy. Since a combination of both gain- and ...
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(NATL ACAD SCIENCES, 2005-01-18)The NMR structures of the recombinant prion proteins from chicken (Gallus gallus; chPrP), the red-eared slider turtle (Trachemys scripta; tPrP), and the African clawed frog (Xenopus laevis; xlPrP) are presented. The amino ...
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(ELSEVIER SCIENCE BV, 2007-06)Prions are unconventional infectious agents responsible for transmissible spongiform encephalopathies. Compelling evidences indicate that prions are composed exclusively by a misfolded form of the prion protein (PrPSc) ...
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(Universidad de Chile, 2008)
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(ELSEVIER, 2005-12)In the past decade, there has been growing concern about the rapid degradation of marine ecosystems due to anthropogenic causes. Consequently, identifying priority areas for the conservation of marine biodiversity has ...
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(Universidad de Chile, 2002)
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(Lippicott Williams & Wilkins, 2015)Respiratory syncytial virus (RSV) and human rhinovirus (HRV) respiratory infection in children induce production of inflammatory interleukins (ILs) in the respiratory epithelium. As IL(s) determine the severity of illness, ...
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(Rockefeller University Press, 2017)The CLC proteins form a broad family of anion-selective transport proteins that includes both channels and exchangers. Despite extensive structural, functional, and computational studies, the transport mechanism of the CLC ...
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(2004)The hydride transfer process between the isoalloxazine moiety of flavins and the nicotinamide moiety of NAD(P)H has been explored by using density functional theory based reactivity index in the 1-methylnicotinamide-lumiflavine ...
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(MDPI, 2022)In this contribution, we present a study of the mechanical properties of porous nanoshells measured with a nanoindentation technique. Porous nanoshells with hollow designs can present attractive mechanical properties, as ...
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(Universidad de Chile, 2004)En este trabajo estudiamos el problema de Albert sobre la solubilidad dc las nilálgebras conmutativas y asociativas en las potencias de dimensión finita. Específicamente, estudiamos el problema et dimensión siete, dimensión ...
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(Elsevier, 2015)We examine the dependence of atomic properties derived from the Quantum Theory of Atoms in Molecules and the Hirshfeld-I method on the existence of (quasi-)degenerate states. As atomic charges are mostly used to quickly ...
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(Universidad de Chile, 2005)Este trabajo se realizó en la División Medio Ambiente de la empresa Cesmec Ltda, en Santiago y se enfocó hacia el desarrollo y aplicación de un procedimiento de validación de información, específicamente de gases, dióxido ...
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(Universidad de Chile, 2018)Los procesos de plasticidad sináptica homeostática (PSH) comprenden una serie de mecanismos compensatorios dependientes del grado de actividad de los circuitos neuronales, de manera que perturbaciones que aumenten o ...
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(Universidad de Chile, 2005)
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(Elsevier Science Ltd, 1999)A process for removing impurities from copper concentrate prior to smelting is presented here. The concentrate is subjected to thermal decomposition in a vacuum chamber at temperatures of about 950 °C. This pretreatment ...
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(Springer, 2018)We have analyzed the role of auroral processes in the formation of the outer radiation belt, considering that the main part of the auroral oval maps to the outer part of the ring current, instead of the plasma sheet as is ...
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(Universidad de Chile, 1983)