Repositorio UMAYOR: Envíos recientes
Mostrando ítems 1601-1620 de 7669
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Distinct oxygen environments shape picoeukaryote assemblages thriving oxygen minimum zone waters off central Chile
(Oxford University Press, 2020-09)Oxygen minimum zones (OMZs) support ocean biogeochemical cycles of global importance. The OMZ off central Chile is characterized by seasonally variable oxygen concentrations due to upwelling events. Bacterial and archaeal ... -
Discriminative learning and associative memory under the differential outcomes procedure is modulated by cognitive load
(Elsevier, 2020-07)Working memory (WM) has been thought to be the cause of associative memory deficits in older adults. Previous research has demonstrated the benefits of a discriminative learning procedure, the differential outcomes procedure ... -
Deciphering the functional diversity of DNA-binding transcription factors in Bacteria and Archaea organisms
(Public Library of Science, 2020-08)DNA-binding Transcription Factors (TFs) play a central role in regulation of gene expression in prokaryotic organisms, and similarities at the sequence level have been reported. These proteins are predicted with different ... -
Core-periphery dynamics in a plant-pollinator network
(Wiley-Blackwell Publishing Ltd, 2020-07)Mutualistic networks are highly dynamic, characterized by high temporal turnover of species and interactions. Yet, we have a limited understanding of how the internal structure of these networks and the roles species play ... -
Connectivity of bacterial assemblages along the Loa River in the Atacama Desert, Chile
(PeerJ Inc., 2020-10)The Loa River is the only perennial artery that crosses the Atacama Desert in northern Chile. It plays an important role in the ecological and economic development of the most water-stressed region, revealing the impact ... -
Characterizing growth rings in the trees of Peru: A wood anatomical overview for potential applications in dendroecological-related fields
(Elsevier GmbH, 2020-08)Sustainable forestry requires accurate ecological information such as species composition, growth rates and recruitment dynamics. Tree growth rates are usually obtained through long-term periodic re-measurements of individual ... -
Cancer cells with defective oxidative phosphorylation require endoplasmic reticulum-to-mitochondria Ca2+ transfer for survival
(American Association for the Advancement of Science, 2020-07)Spontaneous Ca2+ signaling from the InsP(3)R intracellular Ca2+ release channel to mitochondria is essential for optimal oxidative phosphorylation (OXPHOS) and ATP production. In cells with defective OXPHOS, reductive ... -
Cancer cases and deaths attributable to lifestyle risk factors in Chile
(Univ Mayor, Ctr Invest Fisiol Ejercicio CIFE, Chile, 2020-07)Background To identify modifiable risk factors that contribute to cancer holds important public health relevance for setting up prevention strategies. Therefore, the aim of this study was to estimate the proportion of ... -
Biometric Analysis of Healthy Coronary Arteries in a Chilean Population: An Angiographic Study
(Universidad de la Frontera, 2020-12)Thorough knowledge and understanding of coronary arteries and their anatomy is essential when performing cardiac surgery such as a coronary bypass. Coronary angiography is a minimally invasive method used to evaluate the ... -
Biomarkers Profile of People With Sarcopenia: A Cross-sectional Analysis From UK Biobank
(Elsevier Inc., 2020-12)Objective: This study aimed to characterize the biomarker profile of sarcopenic vs nonsarcopenic men and women, using the current European Working Group on Sarcopenia in Older People (EWGSOP2) definition in the UK Biobank ... -
Bacterially produced metabolites protect C. elegans neurons from degeneration
(Public Library of Science, 2020-03)Caenorhabditis elegans and its cognate bacterial diet comprise a reliable, widespread model to study diet and microbiota effects on host physiology. Nonetheless, how diet influences the rate at which neurons die remains ... -
Menopausia y factores de riesgo cardiovascular en mujeres chilenas
(Sociedad Medica de Santiago, 2020-02)Background: Menopause exposes women to an increased cardiovascular risk. Aim: To determine the association between menopause and cardiovascular risk factors in Chilean adult women using data from the National Health Survey ... -
Integrating conflict, lobbying, and compliance to predict the sustainability of natural resource use
(The Resilience Alliance, 2020-06)Predictive models are sorely needed to guide the management of harvested natural resources worldwide, yet existing frameworks fail to integrate the dynamic and interacting governance processes driving unsustainable use. ... -
Insights into gene expression responses to infections in teleosts using microarray data: a systematic review
(Blackwell Publishing Asia, 2021-01)The rapid growth of production in aquaculture in the last decades has brought unwanted consequences affecting fish health and increasing the susceptibility to different infections. This systematic review aimed to analyse ... -
Increasing the temperature range of dipolar glass polymers through copolymerization: A first approach to dipolar glass copolymers
(Elsevier BV, 2020-08)This work introduces, for the first time, the dipolar glass copolymer concept as a new strategy to develop polymer dielectrics. Methacrylic monomers containing sulfone and nitrile groups were copolymerized with ... -
Depression is associated with lower levels of physical activity, body image dissatisfaction, and obesity in Chilean preadolescents
(Routledge, 2021-04)Mental health during the preadolescent years may be determinant for later periods of life; therefore, the factors that influence it need to be studied deeply. The aim of this study was to determine the association between ... -
Detecting sporting talents with z-strategy-cross sectional study
(Redprint Editora Ltda, 2020-03)Introduction: Due to the relationship between early identification of physical and anthropometric characteristics above the population mean in children and adolescents, and success in sports, detecting potential sports ... -
Collisions between amorphous carbon nanoparticles: phase transformations
(EDP Sciences, 2020-09)Context. Collisions of nanoparticles (NPs) occur in dust clouds and protoplanetary disks.Aims. Sticking collisions lead to the growth of NPs, in contrast to bouncing or even fragmentation events and we aim to explore these ... -
Comparación de los niveles de actividad física medidos con cuestionario de autorreporte (IPAQ) con medición de acelerometría según estado nutricional
(Sociedad Medica de Santiago, 2020-01)Background: It is unknown if nutritional status could influence the accuracy of self-reported physical activity (PA) levels. Aim: To compare PA measured using the international physical activity questionnaire (IPAQ) and ... -
Sarcopenic obesity and its association with respiratory disease incidence and mortality
(Churchill Livingstone, 2020-11)Background: Sarcopenic obesity is defined as a combination of sarcopenia and obesity. Previous studies have shown a positive association between sarcopenia and respiratory disease, while other studies have identified that ...