Repositorio UMAYOR: Envíos recientes
Mostrando ítems 621-640 de 7949
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Electrochemical fabrication of nanowires poly (Indole-6-carboxylic acid) adorned with nanorod MnO2 for evaluation of its capacitive properties
(PERGAMON-ELSEVIER SCIENCE LTD, 2023-10-01)A poly(indole-6-carboxy acid) nanowire composite with & beta;-MnO2 nanorod (6-PICA|& beta;-MnO2-NRs) was prepared by an electrochemical method and hydrothermal. The incorporation of & beta;-MnO2-NRs and the formation of ... -
Pubertal development at age 14 is associated with male adolescents' combustible cigarette smoking and dual use, but not with e-cigarette use - Findings from the UK Millennium Cohort Study
(ELSEVIER IRELAND LTD, 2023-12-01)Background: Adolescent nicotine exposure via electronic cigarettes (e-cigarettes) is a global health concern. Pubertal development earlier than peers increases the risk of tobacco smoking compared to peers experiencing ... -
Does substance use disorder treatment completion reduce the risk of treatment readmission in Chile?
(ELSEVIER IRELAND LTD, 2023-07-01)Background: Recovery from substance use disorders (SUD) often entails multiple treatment episodes, which clashes with a context of a treatment system with limited resources and long waiting. Treatment retention and completion ... -
Probing radiation resistance in simulated metallic core-shell nanoparticles
(ELSEVIER, 2023-08)We present molecular dynamics (MD) simulations of radiation damage in Fe nanoparticles (NP) and bimetallic FeCu core-shell nanoparticles (CSNP). The CSNP includes a perfect body-centered cubic (bcc) Fe core coated with a ... -
Plastic behavior of a nanoporous high-entropy alloy under compression
(ELSEVIER, 2023-06-25)Nanoporous High-entropy alloys (HEA) have attracted increasing attention in recent years due to their remark-able mechanical properties and their capability as storage devices. However, chemical complexity involves ... -
Genome sequencing reveals molecular subgroups in oral epithelial dysplasia
(SOCIEDADE BRASILEIRA DE PESQUISA ODONTOLOGICA, 2023-07-16)This study aimed to analyze the molecular characteristics of oral epithelial dysplasia (OED), highlighting the pathways and variants of genes that are frequently mutated in oral squamous cell carcinoma (OSCC) and other ... -
Whole-exome sequencing of oral epithelial dysplasia samples reveals an association with new genes
(SOCIEDADE BRASILEIRA DE PESQUISA ODONTOLOGICA, 2023-03-23)The genetic basis of oral epithelial (OED) is unknown, and there is no reliable method for evaluating the risk of malignant transformation. Somatic mutations are responsible for the transformation of dysplastic mucosa to ... -
A method to deconvolve stellar profiles The non-rotating line utilizing Gaussian sum approximation
(EDP SCIENCES S A, 2023-08-04)Context. Currently, one of the standard procedures used to determine stellar and wind parameters of massive stars involves to comparing the observed spectral lines with a grid of synthetic lines. These synthetic lines are ... -
A Monte Carlo code for the collisional evolution of porous aggregates (CPA)
(EDP SCIENCES S A, 2023-03-29)Context. The collisional evolution of submillimeter-sized porous dust aggregates is important in many astrophysical fields.Aims. We have developed a Monte Carlo code to study the processes of collision between mass-asymmetric, ... -
V4142 Sgr: Double periodic variable with an accretor surrounded by the accretion disk's atmosphere
(EDP SCIENCES S A, 2023-02-10)Context. A detailed study of the close interacting binary V4142 Sgr, based on photometric and spectroscopic analyses, indicates that this system belongs to the enigmatic class of Algol-like variables exhibiting a long ... -
Implementación de una jornada virtual de telesalud y capacitación masiva para personas mayores chilenas y estudiantes de la salud: impacto en la cobertura
(SOC MEDICA SANTIAGO, 2023-02)Background: Aging increases the vulnerability to diseases and environmental changes such as the COVID-19 pandemic. Telehealth and tele-education are vital to prevent the deleterious effects of prolonged confinement, and ... -
ESTADO ACTUAL Y TRANSFORMACIONES DEL EMPLEO RURAL EN AMÉRICA LATINA: UN ANÁLISIS DEL CASO DE CHILE
(UNIV CONCEPCION, CAMPUS CHILLAN, 2023-10-08)El empleo rural de América Latina se ha mantenido históricamente en una situación desfavorable respecto de las áreas urbanas. Mientras los ingresos de los habitantes rurales son inferiores, el trabajo por cuenta propia, ... -
Relación entre características antropométricas, autopercepción del índice de masa corporal, condición física y hábitos alimentarios en estudiantes universitarios de salud y educación
(SOC CHILENA NUTRICION, BROMATOLOGIA & TOXICOLOGIA, 2023-02)Introducción: La etapa universitaria es un período de modificación en los estilos de vida. Los estudiantes de carreras de pedagogía y de la salud, adicionalmente, asumirán un rol de guías y modelos respecto a conductas ... -
Estudio espacializado del decaimiento de la vid en cuarteles Cabernet Sauvignon y Chardonnay*
(UNIV SANTIAGO DE CHILE, 2023-01)Las enfermedades fúngicas de la madera de la vid (EMVs) están entre los problemas fitosanitarios más dañinos en la industria vitivinícola; entre los principales síntomas observados en campo destaca una reducción drástica ... -
Viticultura andina: caracterización edafoclimática de viñedos establecidos en el Valle de Codpa
(UNIV SANTIAGO DE CHILE, 2023-01)La viticultura en Codpa se desarrolla en altura bajo un clima subtropical, donde la vid presenta una serie de problemas fisiológicos debido a la falta de frío invernal. El objetivo de este trabajo fue caracterizar ... -
Characterization of Cabernet Sauvignon from Maipo Valley (Chile) Using Fluorescence Measurement
(UNIV SANTIAGO DE CHILE, 2023-01)Virus infection in Vitis vinifera negatively impacts vineyard production and grape quality. Examples are grapevine leafroll-associated viruses (GLRaVs) and grapevine rupestris stem pitting-associated viruses (GRSPaV). We ... -
La olla y su rol en las demandas sociales en Chile (1947-2019)
(UNIV SANTIAGO DE CHILE, 2023-01)Desde el rito político del charivari como forma de protesta social, hasta la expresión ciudadana de la olla vacía durante el estallido social iniciado en octubre de 2019 en Chile, el presente artículo tiene por objetivo ... -
DNA sequencing in the classroom: complete genome sequence of two earwig (Dermaptera; Insecta) species
(SOC BIOLGIA CHILE, 2023-02-17)BackgroundDespite representing the largest fraction of animal life, the number of insect species whose genome has been sequenced is barely in the hundreds. The order Dermaptera (the earwigs) suffers from a lack of genomic ... -
Weakening of the Summer Monsoon Over the Past 150 Years Shown by a Tree-Ring Record From Shandong, Eastern China, and the Potential Role of North Atlantic Climate
(AMER GEOPHYSICAL UNION, 2023-03)The causes of the decreased intensity of the East Asian summer monsoon (EASM) over the past 150 years are still not fully understood, although several studies have linked the monsoon weakening to the warming of tropical ... -
Factors associated with cognitive impairment in Latin American older adults: A cross-sectional observational study of COVID-19 confinement
(WILEY, 2023-04)INTRODUCTION: The effects of COVID-19 confinement have been severe, especially in older adults. Therefore, we analyzed the factors associated with cognitive impairment (CI) in Latin America (LA). METHODS: We conducted a ...