Investigación y Desarrollo: Envíos recientes
Mostrando ítems 2161-2180 de 5743
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Article
COVID-19 and the political economy of mass hysteria (2021)
(MDPI AG, 2021-02-02)In this article, we aim to develop a political economy of mass hysteria. Using the background of COVID-19, we study past mass hysteria. Negative information which is spread through mass media repetitively can affect public ... -
Article
Serendipitous discovery of a dusty disc around WDJ181417.84-735459.83 (2021)
(Oxford University Press, 2021-03-01)Spectroscopic observations of white dwarfs reveal that many of them are polluted by exoplanetary material, whose bulk composition can be uniquely probed this way. We present a spectroscopic and photometric analysis of the ... -
Article
Between modernization and conflict: The business role, municipal management and the demand for a state drinking water service for Iquique (1830-1924) (2021)
(Universidade do Vale do Rio dos Sinos, 2020-05)Supplying drinking water to Iquique since its authorization as a port at the beginning of the 19th century was a real odyssey because it was located in a coastal area of the Atacama Desert that had no natural water sources ... -
Article
Cross-cultural adaptation and psychometric evaluation of the Safe Sex Behavior Questionnaire among Chilean college students (2021)
(Universidad de Ciencias Medicas de La Hab, 2020-11)Introduction: The incidence of sexually transmitted infections (STIs) has increased significantly among adolescents, young people and university students in Chile. Risky sexual behaviors are an important risk factor in ... -
Article
A Cluster Mediation Analysis Confirms the Validity of the “Fat but Fit” Paradigm in Children's Cognitive Function and Academic Achievement (2021)
(Mosby Inc., 2021)Objective: To evaluate the fat but fit conceptual model, testing whether this paradigm for body mass index (BMI) and maximum rate of oxygen consumption (VO2max) exists in schoolchildren and whether executive functions ... -
Article
Is device-measured vigorous-intensity physical activity associated with health-related outcomes in children and adolescents? A systematic review and meta-analysis (2021)
(Elsevier B.V., 2021)Objective: This study sought to analyze the prospective association between vigorous-intensity physical activity (VPA) and health-related outcomes in children and adolescents. Methods: Studies reporting associations between ... -
Article
Psychometry and empathy levels and its dimensions in postgraduate students of dental specialties (2021)
(Blackwell Publishing Ltd, 2021-01-02)Background: Empathy is an attribute that has an important role in the dentist-patient therapeutic relationship, clinical care and adherence to treatment, amongst other benefits. The aim of this research was to determine ... -
Article
Numerical study on seismic response of steel storage racks with roller type isolator (2021)
(MDPI AG, 2021-01)This research evaluates the effectiveness of using a roller-type base isolation device with tensile strength in reducing the dynamic response of industrial steel storage racks. These were subjected to a seismic input acting ... -
Article
Improvement preclinical and clinical skills for dental preparations using assisted training software (2021)
(Blackwell Publishing Ltd, 2021-01-20)Introduction: Digital workflow is currently available for different fields of dentistry. Additionally, to clinical use, digital technology is focused on the education and training of students. The objective of this study ... -
Article
Representation and (re)significance of a modern hero. Caupolicán in classical and nationalist rhetoric (2021)
(University of Barcelona, 2021)The general goal is to explore the interrelationships between the classical rhetoric used by chroniclers to exalt Mapuche heroes and nationalist rhetoric and his current projections to represent the figure of Caupolicán. ... -
Article
Thy-1 (CD90)-Induced Metastatic Cancer Cell Migration and Invasion Are β3 Integrin-Dependent and Involve a Ca2+/P2X7 Receptor Signaling Axis (2021)
(Frontiers Media S.A., 2021-01-12)Abstract View references (54) Cancer cell adhesion to the vascular endothelium is an important step in tumor metastasis. Thy-1 (CD90), a cell adhesion molecule expressed in activated endothelial cells, has been implicated ... -
Article
Theoretical Evaluation of Novel Thermolysin Inhibitors from Bacillus thermoproteolyticus. Possible Antibacterial Agents (2021)
(NLM (Medline), 2021-01-13)The search for new antibacterial agents that could decrease bacterial resistance is a subject in continuous development. Gram-negative and Gram-positive bacteria possess a group of metalloproteins belonging to the MEROPS ... -
Article
Synthesis and characterization of N-heterocyclic carbene-M⋯OEt2complexes (M = Cu, Ag, Au). Analysis of solvated auxiliary-ligand free [(NHC)M]+species (2021)
(Royal Society of Chemistry, 2021-01-14)We report the synthesis, characterization and computational analysis of coinage metal-ether complexes supported by N-heterocyclic carbenes (NHC), SIPr and Et2CAAC. The related water adducts are also included. The [(NHC)M]+(M ... -
Article
International Consensus Guidance for Management of Myasthenia Gravis: 2020 Update (2021)
(NLM (Medline), 2021-01-19)OBJECTIVE: To update the 2016 formal consensus-based guidance for the management of myasthenia gravis (MG) based on the latest evidence in the literature. METHODS: In October 2013, the Myasthenia Gravis Foundation of America ... -
Article
Coercivity dependence of cation distribution in Co-based spinel: Correlating theory and experiments (2021)
(Royal Society of Chemistry, 2021-01-21)The inversion degree (X) of a spinel-type nanomaterial is an essential parameter to understand the magnetic and electronic properties of ferrites. In this work, we have related different theoretical and experimental ... -
Article
Heterobimetallic Catalysts for the Thermal Decomposition of Ammonium Perchlorate: Efficient Burning Rate Catalysts for Solid Rocket Motors and Missiles (2021)
(American Chemical Society, 2021-02-01)We show the synthesis and characterization of four heterobimetallic compounds derived from s-indacene of general formula [{(CO)3Mn}-s-Ic-{MCp*}]q with M = Fe, Co, Ni, and Ru; q = 0, 1+. The complexes reported here were ... -
Article
Effects of intra-set rest on morphological variables, maximal strength and jump performance in university students (2021)
(Universidad de la Frontera, 2021-02)The appropriate dosage of resistance training could promote physical and physiological adaptations and decrease injuries. The aim of the study was to analyze the effects of the different intra-set rest after eight weeks ... -
Article
Exogenous application of brassinosteroid 24-norcholane 22(S)-23-dihydroxy type analogs to enhance water deficit stress tolerance in arabidopsis thaliana (2021)
(MDPI AG, 2021-02-01)Brassinosteroids (BRs) are plant hormones that play an essential role in plant development and have the ability to protect plants against various environmental stresses, such as low and high temperature, drought, heat, ... -
Article
Workplace bullying and presenteeism in the cruise industry: Evaluating the effect of social support (2021)
(Elsevier Ltd, 2021-04)A cruise ship constitutes a unique research laboratory for the study of workplace bullying and presenteeism because of its manifestation of the phenomena and situations that traditionally characterize total institutions. ... -
Article
Intercity travelers in a railway heritage context: Quantitative assessment of the Victoria - Temuco Regional Service, Chile (2021)
(Universidad de Chile, 2020-11-23)In epistemological terms, the railway is considered as a study object that allows multiple observations. On the one hand, its exclusive role is transporting, but on the other hand, its symbolic and material value for the ...