Repositorio UMAYOR: Envíos recientes
Mostrando ítems 841-860 de 7669
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The impact of forest science in Chile: history, contribution, and challenges
(CANADIAN SCIENCE PUBLISHING, 2021-06)In this article we describe Chile's transition from an agriculture productive model that originated in the 19th century into a more complex economic model that incorporates forest production, explaining the role of forest ... -
High-frequency monitoring of hydrological and biogeochemical fluxes in forested catchments of southern Chile
(WILEY, 2021-05)The variability of rainfall-dependent streamflow at catchment scale modulates many ecosystem processes in wet temperate forests. Runoff in small mountain catchments is characterized by a quick response to rainfall pulses ... -
Modeling °Brix and pH in Wine Grapes from Satellite Images in Colchagua Valley, Chile
(MDPI, 2021-08)To monitor the ripeness and composition of wine grape berries and establish an optimal harvest date, the determination of degrees Brix and pH is vital. This research studies two harvest seasons of Cabernet Sauvignon wine ... -
A neural network for prediction of high intensity resonance modes in magnetic multilayers
(IOP Publishing Ltd, 2021-07)The use of magnetic materials as building blocks for frequency applications makes it possible to fabricate micrometer and nanometer high frequency devices. Moreover, devices with multiple high intensity modes for multiband ... -
Revised Timing of Cenozoic Atlantic Incursions and Changing Hinterland Sediment Sources during Southern Patagonian Orogenesis
(GEOSCIENCEWORLD, 2020-06)New detrital zircon U-Pb geochronology data from the Cenozoic Magallanes-Austral Basin in Argentina and Chile similar to 51 degrees S establish a revised chronostratigraphy of Paleocene-Miocene foreland synorogenic strata ... -
Invasion dynamics of the European bumblebee Bombus terrestris in the southern part of South America
(NATURE PORTFOLIO, 2021-07-27)Invasive species are one of the main biodiversity loss drivers. Some species can establish and thrive in novel habitats, impacting local communities, as is the case of managed pollinators. In this regard, an invasive ... -
Uso de herramientas de la Web 2.0 en la metodología aula invertida: una opción para clases a distancia en tiempos de COVID-19
(SOC MEDICA SANTIAGO, 2021-07)Background: The flipped classroom is an active method where information in delivered before class and the time allocated for it is dedicated to achieving more complex learning objectives. Diverse resources are used in each ... -
Accelerometer-Measured Daily Step Counts and Adiposity Indicators among Latin American Adults: A Multi-Country Study
(MDPI, 2021-05)The aim of the present study was to examine the sex-related associations between accelerometer-measured daily step counts and adiposity indicators in adults from eight Latin American countries. We analyzed data from 2524 ... -
Sociodemographic inequities and active transportation in adults from Latin America: an eight-country observational study
(BMC, 2021-08-26)Background: Active transportation is a crucial sort of physical activity for developing sustainable environments and provides essential health benefits. This is particularly important in Latin American countries because ... -
Bi-objective optimization of multiple agro-industrial wastes supply to a cogeneration system promoting local circular bioeconomy
(ELSEVIER SCI LTD, 2021-10-15)This research analyses and proposes an optimization model for the supply of biomass to a combined heat and power (CHP) system with a supply of different biomasses at a local level under Mediterranean conditions. The research ... -
Gaps, biases, and future directions in research on the impacts of anthropogenic land-use change on aquatic ecosystems: a topic-based bibliometric analysis
(SPRINGER HEIDELBERG, 2021-08)Anthropogenic land use change (ALUC) satisfies human needs but also impacts aquatic ecosystems. Aquatic ecosystems are intrinsically linked with terrestrial landscapes, an association that is already recognized as a key ... -
Challenges and opportunities for the conservation of marine mammals in the Southeast Pacific with the entry into force of the US Marine Mammal Protection Act
(ELSEVIER, 2021-11)With the entry into force of the Fish and Fish Products Import Provisions of the United States Marine Mammal Protection Act (MMPA), countries that export such products to the U.S. market could face significant challenges. ... -
Redox stress response and UV tolerance in the acidophilic iron-oxidizing bacteria Leptospirillum ferriphilum and Acidithiobacillus ferrooxidans
(ELSEVIER, 2021-05)The oxidative stress response represents a sum of antioxidative mechanisms that are essential for determining the adaptation and abundance of microorganisms in the environment. Leptospirillum ferriphilum and Acidithiobacillus ... -
Endodoncia: conceptos básicos
(Chile. Universidad Mayor, 2016-06)Les presentamos la segunda edición del texto guía de nuestra asignatura. Después de un arduo trabajo, estamos felices de seguir fieles al compromiso adquirido con el estudio y formación de nuestros alumnos de endodoncia. ... -
UV-B Radiation as a Factor that Deserves Further Research in Bolivian Viticulture: A Review
(SOUTH AFRICAN SOC ENOLOGY & VITICULTURE-SASEV, 2021-12)Bolivian viticulture has acquired an incipient notoriety in the international wine market due to the production of high-altitude wines with a high antioxidant potential. Andes agricultural regions present an advantage for ... -
Leaf Morpho-Colorimetric Characterization of Different Grapevine Varieties through Changes on Plant Water Status
(MDPI, 2021-09)Background: Currently, some ampelographic methods are developing in order to identify grapevine varieties. For this purpose, morpho-colorimetric parameters in leaves have been analyzed by digital imagen analysis, but some ... -
Biovera-Epi: A new database on species diversity, community composition and leaf functional traits of vascular epiphytes along gradients of elevation and forest-use intensity in Mexico
(PENSOFT PUBLISHERS, 2021-10-07)Background This data paper describes a new, comprehensive database (BIOVERA-Epi) on species distributions and leaf functional traits of vascular epiphytes, a poorly studied plant group, along gradients of elevation and ... -
Active carpets drive non-equilibrium diffusion and enhanced molecular fluxes
(NATURE PORTFOLIO, 2021-03-26)Biological activity is often highly concentrated on surfaces, across the scales from molecular motors and ciliary arrays to sessile and motile organisms. These 'active carpets' locally inject energy into their surrounding ... -
First-Principles Identification of Single Photon Emitters Based on Carbon Clusters in Hexagonal Boron Nitride
(AMER CHEMICAL SOC, 2021-02-18)A recent study associates carbon with single photon emitters (SPEs) in hexagonal boron nitride (h-BN). This observation, together with the high mobility of carbon in h-BN, suggests the existence of SPEs based on carbon ... -
Type I Interferon Dependent hsa-miR-145-5p Downregulation Modulates MUC1 and TLR4 Overexpression in Salivary Glands From Sjogren's Syndrome Patients
(FRONTIERS MEDIA SA, 2021-06-02)Sjogren's syndrome (SS) is an autoimmune disease that mainly affects salivary glands (SG) and is characterized by overactivation of the type I interferon (IFN) pathway. Type I IFNs can decrease the levels of hsa-miR-145-5p, ...