Repositorio UMAYOR: Envíos recientes
Mostrando ítems 1921-1940 de 8199
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Effect of the monomers ratio in the electrosynthesis of poly(aniline-co-o-methoxyaniline) on steel corrosion protection
(Sociedad Chilena de Química, 2020-12)In this work, the synthesis of poly(aniline-co-o-methoxyaniline) was carried out on AISI 304 steel, by voltammetric or potentiostatic method. Electropolymerization was achieved from different ratios of 0.4 mol.L-1 ... -
SK channel activation potentiates auranofin-induced cell death in glio- and neuroblastoma cells
(Elsevier Inc., 2020-01)Brain tumours are among the deadliest tumours being highly resistant to currently available therapies. The proliferative behaviour of gliomas is strongly influenced by ion channel activity. Small-conductance calcium-activated ... -
Six hundred years of South American tree rings reveal an increase in severe hydroclimatic events since mid-20th century
(National Academy of Sciences, 2020-07)South American (SA) societies are highly vulnerable to droughts and pluvials, but lack of long-term climate observations severely limits our understanding of the global processes driving climatic variability in the region. ... -
Seasonality Analysis of Sentinel-1 and ALOS-2/PALSAR-2 Backscattered Power over Salar de Aguas Calientes Sur, Chile
(MDPI Multidisciplinary Digital Publishing Institute, 2020-03)Seasonal changes control the development of salt crust over the Salar de Aguas Calientes Sur located in Andes Highlands, Chile. Precipitations throughout the Altiplanic winter (December to March) and austral winter (June ... -
Schwann cell reprogramming into repair cells increases miRNA-21 expression in exosomes promoting axonal growth
(Company of Biologists Ltd, 2020-06)Functional recovery after peripheral nerve damage is dependent on the reprogramming of differentiated Schwann cells (dSCs) into repair Schwann cells (rSCs), which promotes axonal regeneration and tissue homeostasis. ... -
Recent deforestation drove the spike in Amazonian fires
(IOP Publishing Ltd., 2020-12)Sin resumen. -
Effect of bokashi improved with rock phosphate on parsley cultivation under organic greenhouse management
(Instituto de Investigaciones Agropecuarias, INIA, 2020-09)The application of stabilized organic matter to the soil is essential for the sustainability of a production system. Bokashi is a biofertilizer produced by the aerobic decomposition of organic matter that contributes to ... -
Effect of a Single Nutritional Intervention Previous to a Critical Period of Fat Gain in University Students with Overweight and Obesity: A Randomized Controlled Trial
(MDPI Multidisciplinary Digital Publishing Institute, 2020-07)Background: the present study aimed to investigate the effects of a single nutritional preventive session previous to a critical period linked to fat gain in university students with overweightness and obesity, emulating ... -
Dynamics of Rydberg excitations and quantum correlations in an atomic array coupled to a photonic crystal waveguide
(American Physical Society, 2020-08)We study the dynamics of up to two Rydberg excitations and the correlation growth in a chain of atoms coupled to a photonic crystal waveguide. In this setup, an excitation can hop from one atom to another via exponentially ... -
Dormant but Active: Chilling Accumulation Modulates the Epigenome and Transcriptome ofPrunus aviumDuring Bud Dormancy
(Frontiers Media S.A., 2020-07)Temperate deciduous fruit tree species like sweet cherry (Prunus avium) require long periods of low temperatures to trigger dormancy release and flowering. In addition to sequence-based genetic diversity, epigenetic variation ... -
Concerted Action of AMPK and Sirtuin-1 Induces Mitochondrial Fragmentation Upon Inhibition of Ca(2+)Transfer to Mitochondria
(Frontiers Media S.A., 2020-05)Mitochondria are highly dynamic organelles constantly undergoing fusion and fission. Ca(2+)regulates many aspects of mitochondrial physiology by modulating the activity of several mitochondrial proteins. We previously ... -
Communication Strategies To Enhance HIV/STI Prevention, Sexual and Reproductive Health, and Safety Among Migrant Sex Workers at the Mexico-Guatemala Border
(Johns Hopkins University Press, 2020-05)Communication-based interventions have been linked to improved health and social outcomes among underserved populations. Migrant women in sex work face serious health and social inequities, including risks of HIV and other ... -
Medición de la efectividad del test vocacional del portal eligecarrera.cl aplicado en dos colegios municipales de la Región Metropolitana
(Chile. Universidad Mayor, 2019)La presente investigación se basa en un estudio sobre el test vocacional de Holland, autor ampliamente reconocido por su larga trayectoria sobre la orientación y medición vocacional. En esta investigación se trabajó con ... -
Pollinator declines and the stability of plant-pollinator networks
(Wiley-Blackwell, 2020-04)Population declines of pollinators constitute a major concern for the fate of biodiversity and associated ecosystem services in a context of global change. Massive declines of pollinator populations driven by habitat loss, ... -
Population dynamics of Melanaphis donacis (Hemiptera: Aphididae) and its Coccinellidae and Syrphidae predators on Arundo donax L.
(Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal, 2020)The population density of the aphid Melanaphis donacis (Passerini) was studied in experimental plots of Arundo donax (L.) at the Antumapu Campus of the University of Chile, La Pintana (33 degrees 34' 08 '' S 70 degrees 38' ... -
Satellite Remote Sensing Contributions to Wildland Fire Science and Management
(Springer International Publishing AG, 2020-06)Purpose This paper reviews the most recent literature related to the use of remote sensing (RS) data in wildland fire management. Recent Findings Studies dealing with pre-fire assessment, active fire detection, and fire ... -
The necroptosis pathway and its role in age-related neurodegenerative diseases: will it open up new therapeutic avenues in the next decade?
(Taylor and Francis Ltd., 2020-07)Introduction: Necroptosis is a programmed form of necrotic cell death. Growing evidence demonstrates that necroptosis contributes to cell demise in different pathological conditions including age-dependent neurodegenerative ... -
Effect of Tip Roundness on the Nanoindentation of Fe Crystals
(Springer New York, 2020-04)Indentation tips are never atomically sharp, but rounded at their end. We use atomistic simulation to study the effect of tip roundness for the particular case of a cube-corner pyramidal indenter by comparing the results ... -
Effect of subsurface voids on the nanoindentation of Fe crystals
(IOP Publishing Ltd., 2020-03)Subsurface voids may strongly affect the response of materials to nanoindentation. We explore these effects for a bcc single-crystalline Fe sample using molecular dynamics simulation. Deformation occurs mainly by nucleation ... -
Effect of MnTBAP on in vitro capacitation of frozen-thawed stallion sperm
(Elsevier, 2020-10)In vitro manipulation of spermatozoa leads to deleterious changes of structure and function that occur mainly due to oxidative stress, therefore, prevention or treatment is a strategy to improve the functions of processed ...