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Mostrando ítems 1296-1315 de 1852
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Phenology determines the robustness of plant-pollinator networks
(NATURE PUBLISHING GROUP, 2018)Plant-pollinator systems are essential for ecosystem functioning, which calls for an understanding of the determinants of their robustness to environmental threats. Previous studies considering such robustness have focused ... -
Phenotype of Aeromonas salmonicida sp. salmonicida cyclic adenosine 3′,5′-monophosphate receptor protein (Crp) mutants and its virulence in rainbow trout (Oncorhynchus mykiss)
(Wiley-Blackwell Publishing Ltd, 2017)Precise deletion of genes related to virulence can be used as a strategy to produce attenuated bacterial vaccines. Here, we study the deletion of the cyclic-3,5-adenosine monophosphate (cAMP) receptor protein (Crp) in ... -
Phonon maser stimulated by spin postselection
(American Physical Society, 2020-06-09)In a sequence of single spins interacting longitudinally with a mechanical oscillator, and using the micromaser model with random injection, we show that after an appropriate postselection of each spin, a phonon laser ... -
Phosphorylation of Endothelin-Converting Enzyme-1c at Serines 18 and 20 by CK2 Promotes Aggressiveness Traits in Colorectal Cancer Cells
(Frontiers Media S.A., 2020-07)Endothelin-converting enzyme-1 (ECE1) activates the endothelin-1 peptide, which upregulates pathways that are related to diverse hallmarks of cancer. ECE1 is expressed as four isoforms differing in their N-terminal domains. ... -
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 ... -
Phylogenomic analysis of the Porphyromonas gingivalis-Porphyromonas gulae duo: approaches to the origin of periodontitis
(FRONTIERS MEDIA SA, 2023-07-19)Porphyromonas gingivalis is an oral human pathogen associated with the onset and progression of periodontitis, a chronic immune-inflammatory disease characterized by the destruction of the teeth-supporting tissue. P. ... -
Phylogeny of Sarocladium (Hypocreales)
(CIENCIAS, 2015)The circumscription of the genus Acremonium (Hypocreales) was recently reviewed on the basis of a DNA phylogenetic study. Several species were subsequently transferred to Sarocladium, but the relationships between both ... -
Physical activity and sedentary behaviours are associated with cognitive impairment in Chilean older adults
(SOC MEDICA SANTIAGO, 2019)Background: Lifestyle factors could promote healthy ageing. Aim: To investigate the association between physical activity (PA), sedentary behavior and cognitive impairment in Chilean older adults. Material and Methods: We ... -
Physical capability markers used to define sarcopenia and their association with cardiovascular and respiratory outcomes and all-cause mortality: A prospective study from UK Biobank
(Elsevier Ireland Ltd, 2020-08)Introduction: It is unclear what combinations of physical capability markers used to define sarcopenia have the strongest associations with health outcomes. Aim: To compare the associations between different combinations ... -
Physical fitness profile in elite beach handball players of different age categories
(Edizioni Minerva Medica S.p.A., 2020-12)BACKGROUND: The aims of this study were to compare anthropometric and fitness variables of high-level beach handball players across Under-19 (U-19), Under-21 (U-21) and senior male categories, and between male and female ... -
Physical reasoning to synchronize electrical signals and related diagnostics in plasma focus devices
(Chile. Universidad Mayor, 2018-02)Plasma Focus (PF) devices as well as other similar pulsed discharge devices requires a variety of diagnostics for their proper control and optimization, including the voltage between electrodes, the time derivative of the ... -
Physical-chemical properties of M@Fe3O4 core@shell nanowires (M = Cu, Co, CoO)
(ROYAL SOC CHEMISTRY, 2019)Interest in low dimensional magnetic systems has been growing due to the novel and dramatically differentiated effects of their physical properties, which give them special behaviors and uses in biomedical, environmental ... -
Physicochemical properties of L-alpha dipalmitoyl phosphatidylcholine large unilamellar vesicles: Effect of hydrophobic block (PLA/PCL) of amphipathic diblock copolymers
(Elsevier Ireland Ltd, 2020-08)In the present work, we show how amphipathic diblock copolymers affect the physicochemical properties of the lipid bilayer of DPPC liposome. Diblock copolymers proposed for this study are focused in the difference between ... -
Phytochemical analysis of alkaloids from the Chilean endemic tree Cryptocarya alba
(CIENCIAS, 2016)A phytochemical study of the roots and aerial parts of Cryptocarya alba (Mol.) Looser (Lauraceae), an endemic Chilean tree and the southernmost Cryptocarya species, led for the first time to the isolation and unambiguous ... -
"Pick up anything that moves": a qualitative analysis of a police crackdown against people who use drugs in Tijuana, Mexico
(Springer Open, 2020-04)Background Homeless people who use drugs (PWUD) are often displaced, detained, and/or forced into drug treatment during police crackdowns. Such operations follow a zero-tolerance approach to law enforcement and have a ... -
Pioderma gangrenosa en cirugía plástica: Comunicación de tres casos
(CIENCIAS, 2006)Pyoderma Gangrenosum is a rare disease whose etiology is probably autoimmune. We report two males aged 48 and 49 years and one female aged 54 years, with lesions in the right thigh, right leg and in the borders of a surgical ... -
Plant ecological genomics at the limits of life in the Atacama Desert
(NATL ACAD SCIENCES, 2021-11-16)The Atacama Desert in Chile-hyperarid and with high-ultraviolet irradiance levels-is one of the harshest environments on Earth. Yet, dozens of species grow there, including Atacama-endemic plants. Herein, we establish the ...