Repositorio UMAYOR: Envíos recientes
Mostrando ítems 1781-1800 de 7669
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Transcriptomic analysis at organ and time scale reveals gene regulatory networks controlling the sulfate starvation response ofSolanum lycopersicum
(Chile. Universidad Mayor, 2020)Background Sulfur is a major component of biological molecules and thus an essential element for plants. Deficiency of sulfate, the main source of sulfur in soils, negatively influences plant growth and crop yield. The ... -
Trends in marijuana use in two Latin American countries: an age, period and cohort study
(Chile. Universidad Mayor, 2020)Background and Aims Uruguay and Chile have the highest levels of marijuana use in Latin America, and have experienced consistent increases during the last two decades. We aim to calculate separate age-period-cohort (APC) ... -
Tri-functional oligomeric polyesters prepared from new dicarboxylic acids containing several amino acids residues by Higashi methodology: synthesis, characterization, and study of solubility and thermal behavior
(Chile. Universidad Mayor, 2021)The synthesis of polyfunctional aliphatic oligomeric polyesters (poly(ether-imido-esters;PEIEs) containing several amino acid residues is described, and their thermal properties and solubility behavior were studied. The ... -
Two Centuries of Hydroclimatic Variability Reconstructed From Tree-Ring Records Over the Amazonian Andes of Peru
(Chile. Universidad Mayor, 2020)Almost half of the tributaries of the Amazon River originate in the tropical Andes and support large populations in mountain regions and downstream areas. However, it is difficult to assess hydroclimatic conditions or to ... -
Understanding gold toxicity in aerobically-grown Escherichia coli
(Chile. Universidad Mayor, 2020)Background There is an emerging field to put into practice new strategies for developing molecules with antimicrobial properties. In this line, several metals and metalloids are currently being used for these purposes, ... -
Understanding How Much TV is Too Much: A Nonlinear Analysis of the Association Between Television Viewing Time and Adverse Health Outcomes
(Chile. Universidad Mayor, 2020)Objective: To inform potential guideline development, we investigated nonlinear associations between television viewing time (TV time) and adverse health outcomes. Methods: From 2006 to 2010, 490,966 UK Biobank participants, ... -
Understanding the Stability of Hollow Nanoparticles with Polycrystalline Shells
(Chile. Universidad Mayor, 2020)The existence of polycrystalline shells has been widely reported in the synthesis of hollow nanoparticles; however, the exact role displayed by the grain boundaries on the stability has been scarcely studied. By including ... -
Using classical Cepheids to study the far side of the Milky Way disk: I. Spectroscopic classification and the metallicity gradient
(Chile. Universidad Mayor, 2020)Context. Much of what we know about the Milky Way disk is based on studies of the solar vicinity. The structure, kinematics, and chemical composition of the far side of the Galactic disk, beyond the bulge, are still to be ... -
Using Ecological Modelling to Assess the Long-Term Survival of the West-Indian Manatee (Trichechus manatus) in the Panama Canal
(Chile. Universidad Mayor, 2020)There is evidence of a thriving population of West-Indian manatee (Trichechus manatus) in the Panama Canal, although it is not clear if they are descendants of a small group of introduced manatees or if manatees have entered ... -
Varieties of Skills Profiles in Latin America: A Reassessment of the Hierarchical Model of Capitalism
(Chile. Universidad Mayor, 2020)Research on the politics of skills formation in Latin America is severely underdeveloped. This article offers a novel characterisation of the supply of skills in the region or 'skills supply profiles', taking inspiration ... -
Walking toward Metro Stations: the Contribution of Distance, Attitudes, and Perceived Built Environment
(Chile. Universidad Mayor, 2020)Walking as an active means of travel is important as a sustainable mode of transport. Moreover, the level of walking in the surrounding areas of metro stations would contribute to maintaining the minimum rate of physical ... -
¿Cuál es la curva que mejor explica el crecimiento de los casos confirmados de COVID-19 en Chile?
(Chile. Universidad Mayor, 2020)Objective: to explore the best type of curve or trend model that could explain the epidemiological behavior of the infection by COVID-19 and derive the possible causes that contribute to explain the corresponding model and ... -
Why Let the Dogs Out? Exploring Variables Associated with Dog Confinement and General Characteristics of the Free-ranging Owned-Dog Population in a Peri-urban Area
(Chile. Universidad Mayor, 2020)Free-ranging dogs (FRDs), are a problem in several countries, with impacts on humans, domestic animals, and wildlife, although increasing evidence suggests that most FRDs are owned. Therefore, understanding dog ownership ... -
A dynamic portal for a community-driven, continuously updated classification of Fungi and fungus-like organisms: outlineoffungi.org
(Chile. Universidad Mayor, 2020)The website http://outlineoffungi.org, is launched to provide a continuous up-to-date classification of the kingdom Fungi (including fossil fungi) and fungus-like taxa. This is based on recent publications and on the outline ... -
A cross-scale assessment of productivity-diversity relationships
(Chile. Universidad Mayor, 2020)Aim Biodiversity and ecosystem productivity vary across the globe, and considerable effort has been made to describe their relationships. Biodiversity and ecosystem functioning research has traditionally focused on how ... -
A country's response to tackling plastic pollution in aquatic ecosystems: The Chilean way
(Chile. Universidad Mayor, 2021)Marine plastic pollution is worse than expected, and we are starting to realize its full extent and severity. Solving the plastic pollution problem is not easy, as it requires the action and commitment of all sectors of ... -
3,7-Dimethylpentadecane: a Novel Sex Pheromone Component fromLeucoptera sinuella(Lepidoptera: Lyonetiidae)
(Chile. Universidad Mayor, 2020)Leucoptera sinuellais a leaf-miner moth present in several regions in the world, which has been recently introduced into Chile. The larvae feed exclusively on the leaves of poplar and willow trees, and the damage caused ... -
2018 Chilean Physical Activity Report Card for Children and Adolescents: Full Report and International Comparisons
(Chile. Universidad Mayor, 2020)Background: The study summarizes the findings of the 2018 Chilean Report Card (RC) on Physical Activity (PA) for Children and Adolescents and compares the results with the first Chilean RC and with other countries from the ... -
Comentario de jurisprudencia
(Chile. Universidad Mayor, 2019)La autora comenta la resolución de la Comisión para el Mercado Financiero (CMF) que resuelve que al generarse por una empresa de softwares una página web que muestra seguros de distintos tipos o grupos a clientes finales, ... -
State of health in the European Union: A European Health Index
(Chile. Universidad Mayor, 2019)Introduction: In this paper we propose an index to measure the state of health of the 28 countries of the European Union. Material and methods: Using the Principal Components Analysis method, we construct the European ...