Browsing by Title Facultad de Ciencias
Now showing items 8111-8130 of 8185
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(2007)Cellular glutathione levels may exceed vitamin C levels by 10-fold, generating the question about the real antioxidant role that low intracellular concentrations of vitamin C can play in the presence of a vast molar excess ...
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(Universidad de Chile, 2013)La via de señalización de Shh regula importantes eventos moleculares en el sistema nervioso central a través de la transcripción de genes efectores. Sin embargo, algunas funciones parecen ser independientes de la ...
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(Universidad de Chile, 2010)La migración de las crestas neurales es un proceso complejo que involucra la delaminación de estas células desde un tejido epitelial llamado neuroectodermo, y su posterior desplazamiento hacia diferentes partes del embrión ...
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(Universisdad de Chile, 2008)Las células dendriticas juegan un papel primordial en la polarización Th1Th2 de la respuesta inmune, puesto que estas células son capaces de integrar y decodificar las señales provenientes del patógeno a través de ...
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(Universidad de Chile, 2009)
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Vías de internalización del virus de la necrosis pancreática infecciosa (IPNV) en células del salmón (Universidad de Chile, 2017)
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(Universisdad de Chile, 2007)El cáncer mamario, neoplasia maligna caracterizada por la multiplicación desordenada e incontrolada de las células en algún sitio de la glándula mamaria, es mortal si no se atiende en forma oportuna. La alfa-fetoproteina ...
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(Universidad de Chile, 2012)
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(2012)Native to South America, Alstroemeria flowers are known for their colourful tepals, and Alstroemeria hybrids are an important cut flower. However, in common with many commercial cut flowers, virtually all the commercial ...
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(NATL ACAD SCIENCES, 1997-05-13)Large conductance calcium- and voltage-sensitive K+ (MaxiK) channels share properties of voltage- and ligand-gated ion channels. In voltage-gated channels, membrane depolarization promotes the displacement of charged ...
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(1975)When hemocyanin is added to a black lipid film, the conductance increases in discrete steps. For negative potentials the single step conductance is constant, but for positive potentials the step conductance appears to ...
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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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(1993)This paper describes a method for the quantitative determination of aluminium in haemodialysis concentrates, based on the adsorption on a static mercury drop electrode of the Al-1,2 dihydroxyantraquinone-3-sulphonic acid ...
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(AMER PHYSICAL SOC, 2011-04-29)We have found several families of vortex soliton solutions in two-dimensional discrete dissipative systems governed by the cubic-quintic complex Ginzburg-Landau equation. There are symmetric and asymmetric solutions, and ...
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(2014)Birds still share many traits with their dinosaur ancestors, making them the best living group to reconstruct certain aspects of non-avian theropod biology. Bipedal, digitigrade locomotion and parasagittal hindlimb movement ...
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(Soc Biolgia Chile, 2021)The source of Darwin’s illness has been a contentious issue in the literature for almost 70 years. Different causal factors have been invoked to account for his symptoms, including Chagas disease. The Chagas hypothesis ...
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(Naturalis Biodiversity Center, 2015)The structural origin of the vertebrates' paired limbs is still an unsolved problem. Historically, two hypotheses have been raised to explain the origin of vertebrate limbs: the Archipterygium Hypothesis and the Fin Fold ...
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(ELSEVIER, 2006-08)We investigated the intraspecific variation in basal metabolic rate (BMR) and total evaporative water loss (TEWL) in the omnivorous passerine Zonotrichia capensis from two populations inhabiting regions with different ...
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(GAUTHIER-VILLARS/EDITIONS ELSEVIER, 2008-08)Plant tolerance is the ability to reduce the negative impact of herbivory on plant fitness. Numerous studies have shown that plant tolerance is affected by nutrient availability, but the effect of soil moisture has received ...
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(AMER SOC MICROBIOLOGY, 2008-03)The aim of this study was to assess the occurrence of mutualistic interactions between the fungus Trichoderma harzianum and two wheat genotypes, Triticum aestivum cv. Talhuen and T. turgidum subsp. durum cv. Alifen, and ...