Browsing by Title Facultad de Ciencias
Now showing items 1827-1846 of 8168
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(ASOCIACION QUIMICA ARGENTINA, 1975)Fagara mayu leaves yield four furanocoumarins, identified as psoralen (1), bergapten (11), xanthotoxin (111), and isopimpinellin (IV). The occurrence of these compounds together with furanoquinolines and canthinone, and ...
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(MDPI, 2021)Following an injury, axons of both the central nervous system (CNS) and peripheral nervous system (PNS) degenerate through a coordinated and genetically conserved mechanism known as Wallerian degeneration (WD). Unlike ...
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(Wiley, 2022)Habitat loss and shifts associated with climate change threaten global biodiversity, with impacts likely to be most pronounced at high latitudes. With the disappearance of the tundra breeding habitats, migratory shorebirds ...
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(2012)We study particle current in a recently proposed model for coherent quantum transport. In this model, a system connected to mesoscopic Fermi reservoirs (meso-reservoir) is driven out of equilibrium by the action of ...
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(Humana Press, 1997)Investigation of phototransduction in invertebrate photoreceptors has revealed many physiological and biochemical features of fundamental biological importance. Nonetheless, no complete picture of phototransduction has yet ...
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(Pensoft Publishers, 2022)The unique geography of Chile encompasses a wide diversity of ecosystems and a rich biodiversity. However, the platyhelminth fauna has been poorly studied. The aim of this work is to compile the historical record of ...
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(Taylor & Francis, 2015)A new introduced species, Otala punctata (Muller, 1774) and new records in Chile for Cornu aspersum (Muller, 1774) and Deroceras laeve (Muller, 1774) are documented based on surveys carried out in northern and central ...
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(Universidad de Chile, 2016)
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(Universidad de Chile, 2015)
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(INST ARCTIC ALPINE RES, UNIV COLORADO, 2006-05)High mountain environments are highly stressful for insect survival. It has been suggested that small microtopographic variations generating less stressful microclimatic conditions than the surrounding environment would ...
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(Universidad de Chile, 2010)
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(Academic Press Inc., 2001)A crystallographic and thermal study of the system CuxM1-x(HCOO)2·2H2O (M:Mn, x=0.47; Co, x=0.35; Ni, x=0.37; Cd, x=0.47) has been performed. The compounds, grown at room temperature, crystallize in space group P2I/c and ...
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(BLACKWELL, 2008-06)The diversity of Cyanobacteria in water and sediment samples from four representative sites of the Salar de Huasco was examined using denaturing gradient gel electrophoresis and analysis of clone libraries of 16S rRNA gene ...
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Cyclic AMP cascade mediates the inhibitory odor response of isolated toad olfactory receptor neurons (AMER PHYSIOLOGICAL, 2005-09)Odor stimulation may excite or inhibit olfactory receptor neurons (ORNs). It is well established that the excitatory response involves a cyclic AMP (cAMP) transduction mechanism that activates a nonselective cationic cyclic ...
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Cyclic voltammetric study of the nitro radical anion from nitrendipine generated electrochemically (1991)Electrochemical studies on nitrendipine using mixed aqueous/dimethylformamide (DMF) solvent have allowed us to generate the one-electron reduction product, the nitro radical anion, RNO.-2. The voltammetric technique has ...
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(Lippincott Williams & Wilkins, 2017)The purinergic P2X2 receptor (P2X2R) is an adenosine triphosphate-gated ion channel widely expressed in the nervous system. Here, we identified a putative cyclin-dependent kinase 5 (Cdk5) phosphorylation site in the full-size ...
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(Elsevier Science Ltd., 1995-01-16)Bioactivity guided fractionation of the dichloromethane extract from Psoralea glandulosa yielded the isolation of a diasteromeric mixture of cyc1obakuchiols A and B as possible anti-inflammatory active compounds.
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(Springer, 2015)The preparation and structural elucidation of the 2 alpha-cyclodextrin/decylamine inclusion compound (IC) by proton nuclear magnetic resonance, rotating frame overhauser effect spectroscopy and powder X-ray diffraction ...
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(MDPI, 2021)This article describes the synthesis and characterization of beta-cyclodextrin-based nano-sponges (NS) inclusion compounds (IC) with the anti-tumor drugs melphalan (MPH) and cytoxan (CYT), and the addition of gold nanoparticles ...
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(Pergamon Press, 1974-02-20)The known alkaloids zizyphine-A (1) and -B (2), abyssinine-A (4) and -B (5), and the previously undescribed zizyphine-C (3), -D (6) and -E (7) have been isolated from the stem bark of Zizyphus oenoplia. The structures ...