Repositorio Universidad Católica del Maule: Envíos recientes
Mostrando publicaciones 2801-2820 de 5766
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Production routes to bio-acetic acid: life cycle assessment
(2020)Background: Similar to biofuels, numerous chemicals produced from petroleum resources can also be made from biomass. In this research we investigate cradle to biorefinery exit gate life cycle impacts of producing acetic ...
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Distribution model of toxic agents and runoff phenomenon in flat aquatic regions
; ; Cordova-Lepe, Fernando
; (2020)
The study presents a model of distribution of toxic agents in flat aquatic regions such as lakes, lagoons, and coastal seas, two sources of pollution are modeled, one from the waste of industrial plants and another one, a ...
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Características del bosque asociadas a la ocurrencia del pulmonado endémico Macrocyclis peruvianus (caracol negro) en la Región del Maule, Chile central
(2020)En muchos moluscos terrestres las relaciones entre su abundancia y las características de sus hábitats aún son poco conocidas. En este trabajo, se estudian las relaciones entre el tipo de vegetación y condiciones del ...
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Susceptibility to organophosphates pesticides and the development of infectious-contagious respiratory diseases
; Cordova-Lepe, Fernando; ; (2020)
In this paper we develop an SIRS compartmental model to investigate the dynamic interplay between pesticide intoxication and the spread of infectious-contagious respiratory diseases. We are particularly interested in ...
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Number of COVID-19 cases in Chile at 120 days with data at 21/03/2020 and threshold of daily effort to flatten the epi-curve
Cordova-Lepe, Fernando; ; (2020)
Realizamos una prospectiva básica, con datos al 21/03/2020 de la evolución del número de casos COVID-19 diarios en Chile con datos del Ministerio de Salud. Asumiendo un crecimiento aritmético en la segunda variación de los ...
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Modelo de umbral de reducción de tasa diaria de casos COVID-19 para evitar el colapso hospitalario en Chile
; Cordova-Lepe, Fernando; ; (2020)
Mediante un modelo matemático este trabajo explora la problemática de la disponibilidad versus sobredemanda de procesos críticos hospitalarias (por ejemplo, camas críticas) ante una fuerte expansión epidémica como la que ...
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Elaboration of carbonated beverages from wheatgrass
(2020)El trigo fue cultivado en bandejas de plástico de 22 x 17 cm, con una dosis de siembra de 25 g por bandeja. Se cosechó al décimo día después de la brotación. El estudio consistió en siete tratamientos: T0 testigo, jugo de ...
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Elaboration and sensorial and physicochemical assessment of nectar from mixture of beet, carrot and orange juice
(2019)Se elaboraron cinco néctares con distintos porcentajes de betarraga, zanahoria y naranja en su formulación. Como objetivo general se propuso evaluar la valoración sensorial, nutricional e higiene de un néctar a base de ...
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Early left atrial dysfunction is associated with suboptimal cardiovascular health
(2020)Aims: Two‐dimensional speckle‐tracking echocardiography can assess left atrial (LA) function by measuring atrial volumes and deformation parameters (strain, strain rate). This cross‐sectional analysis explores the association ...
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On some goodness-of-fit tests and their connection to graphical methods with uncensored and censored data
(2020)In this work, we present goodness-of-fit tests related to the Kolmogorov-Smirnov and Michael statistics and connect them to graphical methods with uncensored and censored data. The Anderson-Darling test is often empirically ...
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On a logistic regression model with random intercept: diagnostic analytics, simulation and biological application
(2020)This article proposes a methodology for diagnostics in a logistic regression with random intercept motivated by a biological study. The methodology includes local and global influence techniques allowing us to contrast the ...
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Diagnostic analytics for an autoregressive model under the skew-normal distribution
(2020)Autoregressive models have played an important role in time series. In this paper, an autoregressive model based on the skew-normal distribution is considered. The estimation of its parameters is carried out by using the ...
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Smartphone-based ecological momentary assessment (EMA) in psychiatric patients and student controls: A real-world feasibility study
(2020)Background: Smartphone-based ecological momentary assessment (EMA) is a promising methodology for mental health research. The objective of this study is to determine the feasibility of smartphone-based active and passive ...
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Ecological studies of sleep disturbances during suicidal crises
(2020)Purpose of Review: Several reviews and metanalyses have shown that sleep disturbances, such as insomnia and nightmares, can predict suicidal ideations and behaviors. Common physio-pathological pathways may explain this ...
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Exploring rhenium (I) complexes as potential fluorophores for walled-cells (yeasts and bacteria): Photophysics, biocompatibility, and confocal microscopy
(2021)In the present work, we synthesized and characterized two complexes: fac-Re(CO)3(4,5-diazafluoren-9-one)Br (ReL1) and fac-Re(CO)3(5,6-epoxy-5,6-dihydro-1,10-phenanthroline)Br (ReL2), where ReL2 has not been reported at ...
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State-dependent TMS of inferior frontal and parietal cortices highlights integration of grip configuration and functional goals during action recognition
(2020)Understanding the object-directed actions of conspecifics not only implies recognition of the object (e.g., a pen) and processing of the motor components (e.g., grip configuration), but also identification of the functional ...
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Sistema de creencias de los futuros maestros sobre educación para el desarrollo sostenible en la clase de matemática
(2020)En este estudio se indaga en el sistema de creencias de futuros profesores chilenos de educación infantil y de educación primaria respecto de sus competencias para incorporar la Educación para el Desarrollo Sostenible (EDS) ...
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Auto reporte de la velocidad de marcha y su asociación con marcadores de adiposidad y riesgo cardiovascular en Chile
(2020)Background: Walking speed is a strong predictor of non-communicable diseases and mortality. Aim: To investigate the association of self-reported walking pace with adiposity, metabolic and cardiovascular markers in the ...
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Quality in use of an android-based mobile application for calculation of bone mineral density with the standard ISO/IEC 25022
(2020)One of the most critical bone diseases is osteoporosis, which can be evaluated through measurements of bone mineral density. Though there is a lot of commercialized portable about health in general, few are oriented towards ...