Repositorio UMAYOR: Envíos recientes
Mostrando ítems 1521-1540 de 7669
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Forensic identification of the keratin fibers of South American camelids by ambient ionization mass spectrometry: Vicuña, alpaca and guanaco
(John Wiley and Sons Ltd, 2020-12)Rationale The keratin fleece of the endangered vicuna (Vicugna vicugna) commands a high value in international markets, and this trade has caused illegal poaching and a substantial decrease in vicuna populations. Morphological ... -
Erythroid Differentiation and Heme Biosynthesis Are Dependent on a Shift in the Balance of Mitochondrial Fusion and Fission Dynamics
(Frontiers Media S.A., 2020-11)Erythropoiesis is the most robust cellular differentiation and proliferation system, with a production of similar to 2 x 10(11) cells per day. In this fine-tuned process, the hematopoietic stem cells (HSCs) generate erythroid ... -
Enhancement of the spin-wave nonreciprocity in antiferromagnetically coupled multilayers with dipolar and interfacial Dzyaloshinskii-Moriya interactions
(American Physical Society, 2020-11)Spin-wave-based circuits and logic devices have been considered as an alternative to current electronic devices as they approach the physical limit of miniaturization. Asymmetrical propagation of spin waves, also known as ... -
Electrochemical determination of n,n-dimethyltryptamine in water based on tetraruthenated porphyrins and ionic liquid modified electrodes
(Sociedad Chilena de Química, 2020-03)N,N-dimethyltryptamine (DMT) is a short-acting psychotropic agent when administered parenterally and is not active orally due to its rapid degradation by monoamine oxidase enzyme type A. There is growing interest in the ... -
Effects of plyometric jump training in female soccer player's vertical jump height: A systematic review with meta-analysis
(Routledge, 2020-07)To assess the effects of plyometric jump training (PJT) in female soccer player's vertical jump height, a review was conducted using the data sources PubMed, MEDLINE, Web Of Science and SCOPUS. Only peer-review articles ... -
Phosphorylation of Endothelin-Converting Enzyme-1c at Serines 18 and 20 by CK2 Promotes Aggressiveness Traits in Colorectal Cancer Cells
(Frontiers Media S.A., 2020-07)Endothelin-converting enzyme-1 (ECE1) activates the endothelin-1 peptide, which upregulates pathways that are related to diverse hallmarks of cancer. ECE1 is expressed as four isoforms differing in their N-terminal domains. ... -
Physicochemical properties of L-alpha dipalmitoyl phosphatidylcholine large unilamellar vesicles: Effect of hydrophobic block (PLA/PCL) of amphipathic diblock copolymers
(Elsevier Ireland Ltd, 2020-08)In the present work, we show how amphipathic diblock copolymers affect the physicochemical properties of the lipid bilayer of DPPC liposome. Diblock copolymers proposed for this study are focused in the difference between ... -
Plyometric training improves swimming performance in recreationally-trained swimmers
(Redprint Editora Ltda, 2020-09)Introduction: Plyometric training significantly improves strength performance, including in aquatic sports. Objective: To compare changes in thigh girth, hamstring flexibility, squat jump height, and 200m swimming trial ... -
Protein Kinase CK2 in Cancer Energetics
(Frontiers Media S.A., 2020-06)Protein kinase CK2 (formerly known as casein kinase 2) is abnormally elevated in many cancers. This may increase tumor aggressiveness through CK2-dependent phosphorylation of key proteins in several signaling pathways. In ... -
Relation between COVID-19 and Guillain-Barre syndrome in adults: Systematic review
(Elsevier, 2020-12)Introduction: Numerous cases have been reported of patients with symptoms of Guillain-Barre syndrome associated with COVID-19, but much information is still lacking on this association and its implications. The objective ... -
Resiliencia es más que resistencia: dos experiencias del terremoto y tsunami de 2010
(Pontificia Universidad Católica de Chile, 2020-08)Ante una catástrofe natural, la resistencia es una condición necesaria pero no suficiente. Una construcción puede resistir un terremoto o un aluvión, pero eso no significa que la vida que albergaba vuelva a ocurrir de ... -
Right-Wing Moderation, Left-Wing Inertia and Political Cartelisation in Post-Transition Chile
(Cambridge University Press, 2020-05)By examining the Manifesto Project data for post-transition Chile, we show growing convergence in the electoral competition strategies between the centre-left and centre-right coalitions. While the former is characterised ... -
Desde una educación intercultural para pueblos indígenas hacia otra pertinente al contexto migratorio actual. Un análisis basado en el caso de Chile
(Universidad Catolica del Norte, 2020)Resumen: El artículo plantea la pregunta de si el Programa de Educación Intercultural Bilingüe (PEIB), la política educativa chilena enfocada en aquellos grupos que históricamente han sido considerados como representantes ... -
From the open generalized Heisenberg model to the Landau-Lifshitz equation
(IOP Publishing Ltd., 2020-10)Magnetic systems can be described by the classical Landau-Lifshitz (LL) equation or the fully quantum open generalized Heisenberg model. Using the Lindblad master equation and the mean-field approximation, we demonstrate ... -
FoamExplorer: Automated measurement of ligaments and voids for atomistic systems
(Elsevier, 2020-12)Atomistic simulations are often used to explore the mechanical and chemical properties of a variety of materials and structures, such as nanowires, whiskers, nanospheres, nanotrusses, and nanoscale foams, among others. ... -
Fire history in Andean Araucaria-Nothofagus forests: coupled influences of past human land-use and climate on fire regimes in north-west Patagonia
(CSIRO, 2020)Historical fire regimes are critical for understanding the potential effects of changing climate and human land-use on forest landscapes. Fire is a major disturbance process affecting the Andean Araucaria forest landscape ... -
Hybrid porous silicon/green synthetized Ag microparticles as potential carries for Ag nanoparticles and drug delivery
(Elsevier BV, 2020-11)In the present work, the fabrication of hybrid porous silicon/green synthetized Ag microparticles was shown and the potential use as carriers for Ag nanoparticles and drug delivery was explored. Hybrid microparticles were ... -
Hollow Gold Nanoparticles Produced by Femtosecond Laser Irradiation
(American Chemical Society, 2020-07)Metallic hollow nanoparticles exhibit interesting optical properties that can be controlled by geometrical parameters. Irradiation with femtosecond laser pulses has emerged recently as a valuable tool for reshaping and ... -
Global phylogeography and genetic diversity of the long-finned pilot whale Globicephala melas, with new data from the southeastern Pacific
(Nature Publishing Group, 2020-02)The matrilineal long-finned pilot whale presents an antitropical distribution and is divided into two subspecies, one in the temperate seas of the Southern Hemisphere and the other restricted to the North Atlantic and ... -
GERO Cohort Protocol, Chile, 2017-2022: Community-based Cohort of Functional Decline in Subjective Cognitive Complaint elderly
(BioMed Central Ltd., 2020-12)BackgroundWith the global population aging and life expectancy increasing, dementia has turned a priority in the health care system. In Chile, dementia is one of the most important causes of disability in the elderly and ...