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Mostrando ítems 1684-1703 de 2524
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On sign-changeable interaction in FLRW cosmology
(SPRINGER, 2019)We investigate an interacting two-fluid model in a spatially flat Friedmann-Lemaitre-Robertson-Walker (FLRW) Universe, when the energy transfer between these two dark components is produced by a factorizable nonlinear ... -
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 ... -
On the developmental self-regulatory dynamics and evolution of individuated multicellular organisms
(Academic Press Inc., 2017)Changes in gene expression are thought to regulate the cell differentiation process intrinsically through complex epigenetic mechanisms. In fundamental terms, however, this assumed regulation refers only to the intricate ... -
On the proportional abundance of species: Integrating population genetics and community ecology
(Nature Publishing Group, 2017)The frequency of genes in interconnected populations and of species in interconnected communities are affected by similar processes, such as birth, death and immigration. The equilibrium distribution of gene frequencies ... -
On the Right Track to Treat Movement Disorders: Promising Therapeutic Approaches for Parkinson's and Huntington's Disease
(Frontiers Media S.A., 2020-09)Movement disorders are neurological conditions in which patients manifest a diverse range of movement impairments. Distinct structures within the basal ganglia of the brain, an area involved in movement regulation, are ... -
One in five deaths are associated with an unhealthy diet worldwide: what is the current scenario in Chile?
(SOC CHILENA NUTRICION, BROMATOLOGIA & TOXICOLOGIA, 2019)Sin resumen -
One-class land-cover classification using MaxEnt: the effect of modelling parameterization on classification accuracy
(PEERJ INC, 2019)Multiple-class land-cover classification approaches can be inefficient when the main goal is to classify only one or a few classes. Under this scenario one-class classification algorithms could be a more efficient alternative. ... -
One-step coelectrodeposition-assisted layer-by-layer assembly of gold nanoparticles and reduced graphene oxide and its self-healing three-dimensional nanohybrid for an ultrasensitive DNA sensor
(ROYAL SOC CHEMISTRY, 2018-01-21)A layer-by-layer (LBL) assembly was employed for preparing multilayer thin films with a controlled architecture and composition. In this study, we report the one-step coelectrodeposition-assisted LBL assembly of both gold ... -
Onset and maximum values of electromyographic amplitude during prone hip extension after neurodynamic technique in patients with lumbosciatic pain: A pilot study
(Facultad de Ciencias, 2016)OBJECTIVE: The mechanisms underlying the effects of neurodynamic techniques are still unknown. Therefore, the aim of this study was to provide a starting point for future research on explaining why neurodynamic techniques ... -
Onychomycosis in So Paulo, Brazil
(CIENCIAS, 2009)Onychomycosis is a fungal infection of the nails with broad aetiological scope, and it represents 18-40% of all onychopathies and 39% of all superficial mycotic infections. From July 1996 to December 1999, samples of nails ... -
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 ... -
Oportunidad en la salud digital: una respuesta al control de las demencias
(Chile. Universidad Mayor, 2020)The increase of the elderly population with a significant load of non-communicable diseases, accelerates pathological aging and increases the risk of dementia, generating a huge health, social and economic cost for any ... -
Opposing action of NCoR1 and PGC-1 alpha in mitochondrial redox homeostasis
(ELSEVIER SCIENCE INC, 2019)The ability to respond to fluctuations of reactive oxygen species (ROS) within the cell is a central aspect of mammalian physiology. This dynamic process depends on the coordinated action of transcriptional factors to ... -
Optical qubit generation via atomic postselection in a Ramsey interferometer
(IOP PUBLISHING LTD, 2018)We propose a realizable experimental scheme to prepare a superposition of the vacuum and one-photon states using a typical cavity QED-setup. This is different from previous schemes, where the superposition state of the ... -
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, ... -
Optimal cut-off points for waist circumference in the definition of metabolic syndrome in Chile
(Cambridge University Press, 2020-11)Objective: To identify sex-specific cut-off points for waist circumference (WC) in the definition of metabolic syndrome (MetS) for the Chilean adult population. Design: MetS was defined as the presence of at least two out ... -
Optimal harvest cycle on Nothofagus forests including carbon storage in Southern America: An application to Chilean subsidies in temperate forests
(ELSEVIER SCI LTD, 2019)Different countries may have passed through their forest transitions from net native forest loss to net exotic plantation expansion. More investment in global and national forest monitoring is needed to provide better ... -
Optimizing synthetic diamond samples for quantum sensing technologies by tuning the growth temperature
(ELSEVIER SCIENCE SA, 2019)Control of the crystalline orientation of nitrogen-vacancy (NV) defects in diamond is here demonstrated by tuning the temperature of chemical vapor deposition (CVD) growth on a (113)-oriented diamond substrate. We show ...