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Mostrando ítems 1801-1810 de 2565
On studying the patterns of individual-based tree mortality in natural forests: A modelling analysis
(Elsevier, 2020-11)
Tree mortality is a critical ecological phenomenon shaping forest ecosystem dynamics, structure, and composition, while its effects are of global relevance due to its relationship with forest conditions and environmental ...
Modeling habitat suitability and spread dynamics of two invasive rose species in protected areas of Mendoza, Argentina
(Elsevier, 2020-12)
Biological invasions are a main threat to biodiversity and natural resources, which calls for studies that identify the regions that present the greatest invasion risks. We assessed the potential distribution of two ...
Molecular dynamics simulations of thermal conductivity between two nanoparticles in contact
(American Institute of Physics, 2020-06)
The nanoscale properties of materials can have a great influence on their macroscopic behavior; for instance, the generation and accumulation of defects at the nanoscale, such as point defects, porosity, and interfaces, ...
Mining sequences in activities for time use analysis
(IOS Press, 2020-05)
By providing a complete record of time use for a given population, time use studies enable investigators to test various hypotheses concerning that behavior. However, the large number and variety of activity combinations ...
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 ...
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 ...
Optical, morphological and photocatalytic properties of biobased tractable films of chitosan/donor-acceptor polymer blends
(Elsevier Ltd., 2020-12)
Biobased tractable films consisting of blends of chitosan (CS) with polymer bearing carbazole derivatives as pendant groups and fluorene-thiophene as donor-acceptor units (referred to as DA) were prepared, and their optical, ...
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 ...
Oocyte Selection for In Vitro Embryo Production in Bovine Species: Noninvasive Approaches for New Challenges of Oocyte Competence
(MDPI Multidisciplinary Digital Publishing Institute, 2020-12)
The efficiency of producing embryos using in vitro technologies in cattle species remains lower when compared to mice, indicating that the proportion of female gametes that fail to develop after in vitro manipulation is ...
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 ...