Repositorio UMAYOR: Envíos recientes
Mostrando ítems 3161-3180 de 7669
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Global phylogeography and ancient evolution of the widespread human gut virus crAssphage
(NATURE PUBLISHING GROUP, 2019)Microbiomes are vast communities of microorganisms and viruses that populate all natural ecosystems. Viruses have been considered to be the most variable component of microbiomes, as supported by virome surveys and examples ... -
Multiple elements of soil biodiversity drive ecosystem functions across biomes
(NATURE PUBLISHING GROUP, 2020)The role of soil biodiversity in regulating multiple ecosystem functions is poorly understood, limiting our ability to predict how soil biodiversity loss might affect human wellbeing and ecosystem sustainability. Here, ... -
The resolution-dependent role of landscape attributes in shaping macro-scale biodiversity patterns
(WILEY, 2019)Aim The aim was to assess whether and to what extent the role of local landscape attributes in shaping macroscopic biodiversity patterns is sensitive to spatial and thematic resolutions of land cover data. Location Sub-Saharan ... -
Male group members are costly to plurally breeding Octodon degus females
(BRILL ACADEMIC PUBLISHERS, 2019)We report the results of a 6-year study of social (number of adult males/females, relatedness of females, communal litter size) and ecological (mean/CV of food abundance, soil hardness, burrow openings) factors influencing ... -
Center-Based Care in Toddlerhood and Child Cognitive Outcomes in Chile: The Moderating Role of Family Socio-Economic Status
(ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD, 2020)There is little evidence regarding the benefits of early center-based care attendance (before three years old) for child development and most studies have focused on developed countries. Addressing this gap, this study ... -
Electrochemical in situ synthesis of polypyrrole nanowires
(ELSEVIER SCIENCE INC, 2019)Modification with polypyrrole nanowires, PPy-nw, is accomplished directly upon the working electrode by electrochemical polymerization methods using mesoporous silica as a template. The silica template is prepared by a ... -
dsDNA Sensing Capabilities of Metallopolymers Electrochemically Deposited from Ruthenium-Pyrrole and - Thiophene Complexes
(ESG, 2019)In the current work, a study is presented based on the variation of the monomer unit (thiophene or pyrrole) at electrochemically polymerizable ruthenium complexes, evaluating their possible applications in the field of ... -
UV-VIS spectroelectrochemical in situ study during the electrosynthesis of copolymers
(SOC CHILENA QUIMICA, 2019)In this work, the synthesis of poly(aniline-co-o-methoxyaniline) is performed using purely electrochemical techniques, coupled to UV-vis spectroscopy in situ, in 3D. The electrocopolymerization is carried out on ITO ... -
Dietary sources of sodium among Brazilian population: data from Latin American Nutrition and Health Study (ELANS)
(SOC ESPANOLA DIETETICA & CIENCIAS ALIMENTACION-SEDCA, 2019)Introduction: The average daily intake of sodium in Brazil is 4.11 g/d, which is higher than that in most countries worldwide. Objective: This study aimed to investigate the main food sources of sodium in a representative ... -
The Site-Specific Amino Acid Preferences of Homologous Proteins Depend on Sequence Divergence
(OXFORD UNIV PRESS, 2019)The propensity of protein sites to be occupied by any of the 20 amino acids is known as site-specific amino acid preferences (SSAP). Under the assumption that SSAP are conserved among homologs, they can be used to parameterize ... -
Formation of Hollow Gold Nanocrystals by Nanosecond Laser Irradiation
(AMER CHEMICAL SOC, 2020)The irradiation of spherical gold nanoparticles (AuNPs) with nanosecond laser pulses induces shape transformations yielding nanocrystals with an inner cavity. The concentration of the stabilizing surfactant, the use of ... -
Iron-induced derangement in hepatic Delta-5 and Delta-6 desaturation capacity and fatty acid profile leading to steatosis: Impact on extrahepatic tissues and prevention by antioxidant-rich extra virgin olive oil
(ELSEVIER SCI LTD, 2020)The administration of iron induces liver oxidative stress and depletion of long-chain polyunsaturated fatty acids (LCPUFAs), n-6/n-3 LCPUFA ratio enhancement and fat accumulation, which may be prevented by antioxidant-rich ... -
Simurg: simulate bacterial pangenomes in R
(OXFORD UNIV PRESS, 2020)Motivation: The pangenome concept describes genetic variability as the union of genes shared in a set of genomes and constitutes the current paradigm for comparative analysis of bacterial populations. However, there is a ... -
Alimentary necrobacillosis in alpacas
(SAGE PUBLICATIONS INC, 2020)Ulcers of the oral cavity, esophagus, and gastric compartments of South American camelids are uncommon. Multifocal-to-coalescing ulcers were identified in the oral cavity, esophagus, and/or gastric compartments of 5 alpacas ... -
Trends in Urban Forestry Research in Latin America & The Caribbean: A Systematic Literature Review and Synthesis
(ELSEVIER GMBH, 2020)Research on urban forests has expanded in the last 30 years in the US, Canada, Europe, and Australia. Nonetheless, urban forestry has been explored to much less extent in the Latin America and the Caribbean region, despite ... -
Immunocytochemical and Ultrastructural Evidence Supporting That Andes Hantavirus (ANDV) Is Transmitted Person-to-Person Through the Respiratory and/or Salivary Pathways
(FRONTIERS MEDIA SA, 2020)In South America Andes hantavirus (ANDV) is hosted by the rodent Oligoryzomys longicaudatus (also known as pygmy rice rat). In humans, ANDV causes Hantavirus Pulmonary Syndrome (HPS), with a fatality rate of about 40%. ... -
Detection of sentinel bacteria in mangrove sediments contaminated with heavy metals
(PERGAMON-ELSEVIER SCIENCE LTD, 2020)Mangroves in the Northwest Coast of South America are contaminated with heavy metals due to wastewater discharges from industries, affecting the biota from this environment. However, bacteria proliferate in these harsh ... -
Photo-active chitosan-based hybrid films
(PERGAMON-ELSEVIER SCIENCE LTD, 2020)Biodegradable films for food packaging have received increasing attention from the industry in recent years. Due to its extraordinary properties, chitosan has demonstrated to be an exceptional candidate for that kind of ... -
Interoceptive Insular Cortex Mediates Both Innate Fear and Contextual Threat Conditioning to Predator Odor
(FRONTIERS MEDIA SA, 2020)The insular cortex (IC), among other brain regions, becomes active when humans experience fear or anxiety. However, few experimental studies in rats have implicated the IC in threat responses. We have recently reported ... -
Equilibrium and nonequilibrium in the three-dimensional Q2R cellular automata
(AMER PHYSICAL SOC, 2020)I study the equilibrium and nonequilibrium dynamics of a conservative and reversible Q2R cellular automata. This system exhibits a configuration space with 2(2N) states, which grows with the size of the system. In this ...