Universidad Mayor (Chile): últimos ingresos
Mostrando ítems 2721-2740 de 7087
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Synthesis and Properties of Poly(imides) and Poly(imides)/Ionic Liquid Composites Bearing a Benzimidazole Moiety
(MDPI, 2019)Three new aromatic poly(imides) containing benzimidazole units in the backbone were synthesized and characterized by several spectroscopic techniques. Flexible spacer groups were incorporated into the poly(imides) structure ... -
Linoleic acid and stearic acid are biosynthetic precursors of (7Z,10Z)-7,10-hexadecadienal, the major component of the sex pheromone of Chilecomadia valdiviana (Lepidoptera: Cossidae)
(PUBLIC LIBRARY SCIENCE, 2019)The main pheromone compound of Chilecomadia valdiviana (Lepidoptera: Cossidae) has been recently identified as (7Z,10Z)-7,10-hexadecadienal. The biosynthesis of this pheromone compound showing attributes of both Type I and ... -
Chaetothyrialean fungi from aromatic hydrocarbon-polluted environments of Iran
(GEBRUDER BORNTRAEGER, 2019)In this study we aimed to isolate and characterize chaetothyrialean mitosporic fungi from natural oil fields in Iran. Soil samples were collected from areas of Khuzestan, Bushehr, and Kohgiluyeh and Boyer-Ahmad provinces ... -
Storage and retrieval of interacting photons in a Rydberg medium
(AMER PHYSICAL SOC, 2019)Storing interacting photons in ensembles of highly excited Rydberg atoms makes it possible to realize photon-photon gates. The efficiency of stopping and retrieving pairs of single-photon pulses in any Rydberg medium is, ... -
Network approach identifies Pacer as an autophagy protein involved in ALS pathogenesis
(BMC, 2019)BackgroundAmyotrophic lateral sclerosis (ALS) is a multifactorial fatal motoneuron disease without a cure. Ten percent of ALS cases can be pointed to a clear genetic cause, while the remaining 90% is classified as sporadic. ... -
The Metabolomic Signature of Opa1 Deficiency in Rat Primary Cortical Neurons Shows Aspartate/Glutamate Depletion and Phospholipids Remodeling
(NATURE PUBLISHING GROUP, 2019)Pathogenic variants of OPA1, which encodes a dynamin GTPase involved in mitochondrial fusion, are responsible for a spectrum of neurological disorders sharing optic nerve atrophy and visual impairment. To gain insight on ... -
Tracing the phylogenetic history of the Crl regulon through the Bacteria and Archaea genomes
(BMC, 2019)Background: Crl, identified for curli production, is a small transcription factor that stimulates the association of the sigma(S) factor (RpoS) with the RNA polymerase core through direct and specific interactions, increasing ... -
Effect of CO2 Concentration on Uptake and Assimilation of Inorganic Carbon in the Extreme Acidophile Acidithiobacillus ferrooxidans
(FRONTIERS MEDIA SA, 2019)This study was motivated by surprising gaps in the current knowledge of microbial inorganic carbon (Ci) uptake and assimilation at acidic pH values (pH < 3). Particularly striking is the limited understanding of the ... -
Limiting Alcohol Outlet Density to Prevent Alcohol Use and Violence: Estimating Policy Interventions Through Agent-Based Modeling
(OXFORD UNIV PRESS INC, 2019)Increasing alcohol outlet density is well-documented to be associated with increased alcohol use and problems, leading to the policy recommendation that limiting outlet density will decrease alcohol problems. Yet few studies ... -
Quick and Easy Modification of Glassy Carbon Electrodes with Ionic Liquid and Tetraruthenated Porphyrins for the Electrochemical Determination of Atrazine in Water
(WILEY-V C H VERLAG GMBH, 2019)Atrazine is a pesticide used to control broadleaf weeds, however its wide distribution and its high persistence in the soil and in surface waters has resulted in a public and environmental health problem. Present results ... -
Multicomponent physical training in patients with Parkinson disease
(SOC MEDICA SANTIAGO, 2019)Background: Multicomponent physical training in patients with Parkinson disease may improve their functional independence, especially in terms of gait speed and coordination. Aim: To assess the effects of an eight weeks ... -
Construction of the Division Algorithm in Fourth Elementary Year in a Chilean School
(UNIV GRANADA, GRUPO INVESTIGACION DIDACTICA MATEMATICA, 2019)From a socioepistemological approach, this qualitative study explores the argumentation provided by nine-year-old students to characterize the process of construction of the division algorithm in the natural number system. ... -
Thomas Hobbes's a priori notion of contract
(VITA PENSIERO, 2019)Thomas Hobbes's theory of social contract has received much attention and commentary from scholars. Less attention has been given to his theory of contract as a theory of private law contracts. But it has not been noted ... -
Non-lysosomal Activation in Macrophages of Atlantic Salmon (Salmo salar) After Infection With Piscirickettsia salmonis
(FRONTIERS MEDIA SA, 2019)Piscirickettsia salmonis is a facultative intracellular pathogen and etiological agent of the systemic disease salmonid rickettsial septicemia. It has been suggested that P salmonis is able to survive in host macrophages, ... -
Novel in situ synthesis of copper nanoparticles supported on reduced graphene oxide and its application as a new catalyst for the decomposition of composite solid propellants
(ROYAL SOC CHEMISTRY, 2019)The catalytic activity of graphene oxide (GO), reduced graphene oxide (rGO), copper nanoparticles (CuNP) and rGO supported copper nanoparticles (rGO|CuNP) was investigated for the thermal decomposition of ammonium perchlorate ... -
Patellar and Achilles Tendon Stiffness in Elite Soccer Players Assessed Using Myotonometric Measurements
(SAGE PUBLICATIONS INC, 2019)Background: Tendon overuse injuries are an issue in elite footballers (soccer players) and may affect tendon function. Achilles and patellar tendinopathy are the most frequent pathologies. Tendon stiffness, the relationship ... -
Relationship between levels of physical activity and sedentarism with metabolic syndrome. ENS Chile 2009-2010
(INST NACIONAL SALUD PUBLICA, 2019)Objective. To use a new methodology to classify the level of physical activity (PA) by combining the levels of PA and sedentary time (SED) in order to establish its association with metabolic syndrome (MS). Materials and ... -
Carnivore-livestock conflicts in Chile: evidence and methods for mitigation
(JACK H BERRYMAN INST, 2019)Human population growth and habitat loss have exacerbated human-wildlife conflicts worldwide. We explored trends in human-wildlife conflicts (HWCs) in Chile using scientific and official reports to identify areas and species ... -
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 ... -
Non-pharmacological motor-cognitive treatment to improve the mental health of elderly adults
(ASSOC MEDICA BRASILEIRA, 2019)OBJECTIVE: To propose a program of physical-cognitive dual task and to measure its impact in Chilean institutionalized elderly adults. METHOD: Experimental design study with pre and post-intervention evaluations, measuring ...