bluuebunny/crossref_metadata_2025_split huggingface dataset:
Thermal Energy Storage Property and Temperature Control Performance
of Phase Change Materials Eutectic Mixture Nanocomposite
Authors: Musavi Seyed Mostapha , Roudini Ghodratollah , Barahuie Farahnaz , Binti Masuri Siti Ujila 
Published: September 2021

Background:
The utilization of high-performance Phase Change Materials (PCMs) that can
reversibly store thermal energy is of immense interest and strategy for effective energy conservation
and management.

Methods:
In this work, a new PCM nanocomposite, consisting of a eutectic mixture of stearic acid and
n-nonadecane as core and SiO2 as shell, was prepared by direct impregnation method. Additionally, a
laboratory scaled test room was designed to investigate the intelligent temperature control function of
the nanocomposite in building materials.

Results:
The optimized nanocomposite was characterized using Fourier Transform Infrared (FTIR)
spectroscopy, Differential Scanning Calorimetry (DSC), X-Ray Diffraction (XRD), and Scanning Electron
Microscopy (SEM) techniques. The DSC data demonstrated that the PCMs eutectic mixture content
in the stearic acid- n-nonadecane–SiO2 nanocomposite was 52.8 wt.% and the melting temperatures
and latent heats of stearic acid - n-nonadecane eutectic mixture and optimized nanocomposite were 45.1
and 44.0 °C, and 163.7 and 86.5 J/g, respectively. Furthermore, the accelerated thermal cycling test confirmed
the excellent thermal cycling stability of the nanocomposite after 500 heating-cooling cycles.
Moreover, the laboratory scaled test room results showed that the incorporation of the resulting nanocomposite
in the gypsum could reduce indoor temperature fluctuation, and the performance was improved
with the increase in the mass percentage of the nanocomposite in the gypsum composite.

Conclusion:
The obtained nanocomposite had good thermal reliability and temperature control performance
and thus can be a promising candidate for hi-tech applications in intelligent temperature control
and precise thermal management.
Kinetics of the Catalytic Combustion of Ethanol and Ethyl Acetate with Estimation of Activation Energy and Rate Constants: An Analytical Study
Authors: Salomi R. Joy , Sylvia S. Vinolyn , Abukhaled Marwan , Rajendran L. 
Published: September 2021

Background:
A mathematical model for the combustion of ethanol and ethyl acetate
mixtures using Mn9Cu1 (mixture of manganese and copper with a weight ratio of 9:1) catalyst is
discussed. The model’s kinetic mechanism is expressed in terms of nonlinear reaction-diffusion
equations with common initial and boundary conditions in a finite planar, cylindrical, and spherical
geometry.

:
A Taylor series approach is used to derive general approximate analytical expressions of ethanol,
acetaldehyde, and ethyl acetate molar concentrations inside the particle and reactor phase for various
values of rate constants, diffusion, and kinetic parameters. The effect of shape factor for the
planar, cylindrical, and spherical geometry of dispersed particles was examined for the first time.
Activation energy and rate constant at the reference temperature of ethanol, acetaldehyde, and
ethyl acetate are also obtained from the rate equations. A direct comparison with numerical simulations
confirms the accuracy of the derived analytical results.

Objective:
Derive general approximate analytical expressions of ethanol, acetaldehyde, and ethyl
acetate molar concentrations inside the particle and reactor phase for various parameter values.

Methods:
We employ the simple and reliable Taylor series method.

Results:
Semi-analytic expressions of the concentration and bulk concentration of ethanol, ethyl
acetate, and acetaldehyde.

Conclusion:
Approximate analytical expressions of the concentrations of ethanol, acetaldehyde
and ethyl acetate were derived for arbitrary catalyst particle (planar, cylindrical and spherical) by
using a simple, reliable, and robust method. In addition, the concentration of the species in reactor
phase was also reported. The effects of the kinetic parameters, which are influenced by adsorption
equilibrium constant, effective diffusivity, activation energy, on concentration, were discussed.
High Work-Related Stress and Anxiety as a Response to COVID-19 Among Health Care Workers in South Korea: Cross-sectional Online Survey Study
Authors: Ahn Myung Hee , Shin Yong-Wook , Suh Sooyeon , Kim Jeong Hye , Kim Hwa Jung , Lee Kyoung-Uk , Chung Seockhoon 
Published: September 2021

Background
The COVID-19 outbreak had a severe impact on health care workers' psychological health. It is important to establish a process for psychological assessment and intervention for health care workers during epidemics.

Objective
We investigated risk factors associated with psychological impacts for each health care worker group, to help optimize psychological interventions for health care workers in countries affected by the COVID-19 pandemic.

Methods
Respondents (n=1787) from 2 hospitals in Korea completed a web-based survey during the period from April 14 to 30, 2020. The web-based survey collected demographic information, psychiatric history, and responses to the 9-item Stress and Anxiety to Viral Epidemics (SAVE-9), 9-item Patient Health Questionnaire (PHQ-9), and 7-item Generalized Anxiety Disorder-7 (GAD-7) scales. We performed logistic regression to assess contributing factors as predictor variables, using health care workers’ depression as outcome variables.

Results
Among 1783 health care workers, nursing professionals had significantly higher levels of depression (PHQ-9 score: meannurse 5.5, SD 4.6; meanother 3.8, SD 4.2; P<.001), general anxiety (GAD-7 score: meannurse 4.0, SD 4.1; meanother 2.7, SD 3.6; P<.001), and virus-related anxiety symptoms (SAVE-9 score: meannurse 21.6, SD 5.9; meanother 18.6, SD 6.3; P<.001). Among nursing professionals, single workers reported more severe depressive symptoms than married workers (PHQ-9 score ≥10; meannurse 20.3%; meanother 14.1%; P=.02), and junior (<40 years) workers reported more anxiety about the viral epidemic (SAVE-9 anxiety score; meannurse 15.6, SD 4.1; meanother 14.7, SD 4.4; P=.002). Logistic regression revealed that hospital (adjusted odds ratio [OR] 1.45, 95% CI 1.06-1.99), nursing professionals (adjusted OR 1.37, 95% CI 1.02-1.98), single workers (adjusted OR 1.51, 95% CI 1.05-2.16), higher stress and anxiety to the viral infection (high SAVE-9 score, adjusted OR 1.20, 95% CI 1.17-1.24), and past psychiatric history (adjusted OR 3.26, 95% CI 2.15-4.96) were positively associated with depression.

Conclusions
Psychological support and interventions should be considered for health care workers, especially nursing professionals, those who are single, and those with high SAVE-9 scores.
Adoption of Preventive Measures During the Very Early Phase of the COVID-19 Outbreak in China: National Cross-sectional Survey Study
Authors: Lau Joseph , Yu Yanqiu , Xin Meiqi , She Rui , Luo Sitong , Li Lijuan , Wang Suhua , Ma Le , Tao Fangbiao , Zhang Jianxin , Zhao Junfeng , Hu Dongsheng , Li Liping , Zhang Guohua , Gu Jing , Lin Danhua , Wang Hongmei , Cai Yong , Wang Zhaofen , You Hua , Hu Guoqing ,   COVID-19 University Student Research Group
Published: September 2021

Background
The outbreak of COVID-19 in China occurred around the Chinese New Year (January 25, 2020), and infections decreased continuously afterward. General adoption of preventive measures during the Chinese New Year period was crucial in driving the decline. It is imperative to investigate preventive behaviors among Chinese university students, who could have spread COVID-19 when travelling home during the Chinese New Year break.

Objective
In this study, we investigated levels of COVID-19–related personal measures undertaken during the 7-day Chinese New Year holidays by university students in China, and associated COVID-19–related cognitive factors.

Methods
A cross-sectional anonymous web-based survey was conducted during the period from February 1 to 10, 2020. Data from 23,863 students (from 26 universities, 16 cities, 13 provincial-level regions) about personal measures (frequent face-mask wearing, frequent handwashing, frequent home staying, and an indicator that combined the 3 behaviors) were analyzed (overall response rate 70%). Multilevel multiple logistic regression analysis was performed.

Results
Only 28.0% of respondents (6684/23,863) had left home for >4 hours, and 49.3% (11,757/23,863) had never left home during the 7-day Chinese New Year period; 79.7% (19,026/23,863) always used face-masks in public areas. The frequency of handwashing with soap was relatively low (6424/23,863, 26.9% for >5 times/day); 72.4% (17,282/23,863) had frequently undertaken ≥2 of these 3 measures. COVID-19–related cognitive factors (perceptions on modes of transmission, permanent bodily damage, efficacy of personal or governmental preventive measures, nonavailability of vaccines and treatments) were significantly associated with preventive measures. Associations with frequent face-mask wearing were stronger than those with frequent home staying.

Conclusions
University students had strong behavioral responses during the very early phase of the COVID-19 outbreak. Levels of personal prevention, especially frequent home staying and face-mask wearing, were high. Health promotion may modify cognitive factors. Some structural factors (eg, social distancing policy) might explain why the frequency of home staying was higher than that of handwashing. Other populations might have behaved similarly; however, such data were not available to us.
Use of Deep Learning to Predict Acute Kidney Injury After Intravenous Contrast Media Administration: Prediction Model Development Study
Authors: Yun Donghwan , Cho Semin , Kim Yong Chul , Kim Dong Ki , Oh Kook-Hwan , Joo Kwon Wook , Kim Yon Su , Han Seung Seok 
Published: September 2021

Background
Precise prediction of contrast media–induced acute kidney injury (CIAKI) is an important issue because of its relationship with poor outcomes.

Objective
Herein, we examined whether a deep learning algorithm could predict the risk of intravenous CIAKI better than other machine learning and logistic regression models in patients undergoing computed tomography (CT).

Methods
A total of 14,185 patients who were administered intravenous contrast media for CT at the preventive and monitoring facility in Seoul National University Hospital were reviewed. CIAKI was defined as an increase in serum creatinine of ≥0.3 mg/dL within 2 days or ≥50% within 7 days. Using both time-varying and time-invariant features, machine learning models, such as the recurrent neural network (RNN), light gradient boosting machine (LGM), extreme gradient boosting machine (XGB), random forest (RF), decision tree (DT), support vector machine (SVM), κ-nearest neighbors, and logistic regression, were developed using a training set, and their performance was compared using the area under the receiver operating characteristic curve (AUROC) in a test set.

Results
CIAKI developed in 261 cases (1.8%). The RNN model had the highest AUROC of 0.755 (0.708-0.802) for predicting CIAKI, which was superior to that obtained from other machine learning models. Although CIAKI was defined as an increase in serum creatinine of ≥0.5 mg/dL or ≥25% within 3 days, the highest performance was achieved in the RNN model with an AUROC of 0.716 (95% confidence interval [CI] 0.664-0.768). In feature ranking analysis, the albumin level was the most highly contributing factor to RNN performance, followed by time-varying kidney function.

Conclusions
Application of a deep learning algorithm improves the predictability of intravenous CIAKI after CT, representing a basis for future clinical alarming and preventive systems.
Using Co-design in Mobile Health System Development: A Qualitative Study With Experts in Co-design and Mobile Health System Development
Authors: Noorbergen Tyler J , Adam Marc T P , Teubner Timm , Collins Clare E 
Published: September 2021

Background
The proliferation of mobile devices has enabled new ways of delivering health services through mobile health systems. Researchers and practitioners emphasize that the design of such systems is a complex endeavor with various pitfalls, including limited stakeholder involvement in design processes and the lack of integration into existing system landscapes. Co-design is an approach used to address these pitfalls. By recognizing users as experts of their own experience, co-design directly involves users in the design process and provides them an active role in knowledge development, idea generation, and concept development.

Objective
Despite the existence of a rich body of literature on co-design methodologies, limited research exists to guide the co-design of mobile health (mHealth) systems. This study aims to contextualize an existing co-design framework for mHealth applications and construct guidelines to address common challenges of co-designing mHealth systems.

Methods
Tapping into the knowledge and experience of experts in co-design and mHealth systems development, we conducted an exploratory qualitative study consisting of 16 semistructured interviews. Thereby, a constructivist ontological position was adopted while acknowledging the socially constructed nature of reality in mHealth system development. Purposive sampling across web-based platforms (eg, Google Scholar and ResearchGate) and publications by authors with co-design experience in mHealth were used to recruit co-design method experts (n=8) and mHealth system developers (n=8). Data were analyzed using thematic analysis along with our objectives of contextualizing the co-design framework and constructing guidelines for applying co-design to mHealth systems development.

Results
The contextualized framework captures important considerations of the mHealth context, including dedicated prototyping and implementation phases, and an emphasis on immersion in real-world contexts. In addition, 7 guidelines were constructed that directly pertain to mHealth: understanding stakeholder vulnerabilities and diversity, health behavior change, co-design facilitators, immersion in the mHealth ecosystem, postdesign advocates, health-specific evaluation criteria, and usage data and contextual research to understand impact.

Conclusions
System designers encounter unique challenges when engaging in mHealth systems development. The contextualized co-design framework and constructed guidelines have the potential to serve as a shared frame of reference to guide the co-design of mHealth systems and facilitate interdisciplinary collaboration at the nexus of information technology and health research.
Gobernanza multinivel en la integración del consorcio de innovación y transferencia tecnológica de Aguascalientes para el sector automotriz
Authors: Marquina Sánchez Lourdes , Álvarez Medina Lourdes 
Published: September 2021

Objetivo: analizar el proceso de implementación del proyecto de creación del Centro de Innovación y Transferencia Tecnológica de Aguascalientes para el sector Automotriz (CITTAA), a fin de explicar cuáles fueron los mecanismos de gobernanza multinivel que influyeron en su formación y cómo coadyuvaron a resolver las tensiones que se presentaron para iniciar operaciones.Diseño metodológico: se realizó un estudio de caso que propone un marco analítico para identificar y clasificar las decisiones públicas como mecanismos de gobernanza del proyecto del consorcio CITTAA, localizados en tres dimensiones: sectorial-territorial; político-institucional y organizacional. Resultados: los mecanismos de gobernanza de tipo comando, persuasivos y de intercambios monetizados predominaron en la dimensión sectorial-territorial, mientras que, en la dimensión político-institucional, prevalecieron los de tipo comando y persuasivos. En la dimensión organizacional se movilizaron mecanismos de tipo solidario, persuasivo y, en menor medida, de comando e intercambio no monetizado. La prevalencia de mecanismos de tipo comando en las tres dimensiones caracteriza la implementación del proyecto CITTAA dentro del modelo I de gobernanza multinivel centrado en el Estado. Sin embargo, dado que los agentes empresariales localizados en Aguascalientes también influyeron, puede considerarse como un modelo híbrido. Limitaciones: la investigación permitió comprender a profundidad la implementación de la Estrategia de Centros de Atención Tecnológica a la Industria (ECATI) del Conacyt, para el sector automotriz en Aguascalientes, a partir del proyecto CITTAA, sin pretender generalizaciones en el campo organizacional de los consorcios de investigación en México.Hallazgos: el CITTAA mantiene una estructura organizacional débilmente acoplada, con bajo nivel de institucionalización que favorece su flexibilidad para responder a las demandas de manufactura avanzada del entorno multisectorial y no sólo automotriz.
Cuidado de enfermería a pacientes en diálisis peritoneal: de la teoría a la práctica
Authors: Franco Mejía Viviana , Ángel Depine Santos , Mejía Royet Francia , Payares Fanny , Sarmiento Johanys , Lastre Gloria , Bohórquez Moreno Cristina 
Published: September 2021

Introducción: La Diálisis Peritoneal (DP) es el procedimiento medico en el que se eliminan los desechos y el líquido excedente en la sangre, esta terapia conlleva una activa labor de autocuidado por parte del paciente en el domicilio, previo entrenamiento de enfermería fomentando la adherencia al tratamiento.
Objetivo: describir la relación de cuidado que lleva a cabo la enfermera de diálisis peritoneal de una unidad renal basada en guías y protocolos establecidos, con la teoría de Autocuidado (teoría de los sistemas) de Dorotea Orem.
Materiales y métodos: para la realización de este estudio se aplicó un diseño de investigación descriptiva con enfoque cualitativo, participaron 6 enfermeras que laboraban en un programa de Diálisis peritoneal, además, se consultó bibliografías y así relacionar la situación con los modelos y teorías en enfermería.
Resultados: El personal de enfermería planificó el entrenamiento al paciente creando estrategias educativas que favorecían el autocuidado según el modelo de Dorotea Orem.
Conclusiones: Teniendo en cuenta los conceptos teóricos de Dorotea Orem, aplicados en el cuidado de enfermería en el paciente de Dialisis Peritoneal se logró resultados óptimos en el desarrollo de la terapia del paciente, fortaleciendo la capacidad de autocuidado, desarrollando habilidades y conocimientos que le permitan adherirse a las recomendaciones de enfermería dadas en el entrenamiento.
Consenso colombiano de expertos sobre recomendaciones informadas en la evidencia para el manejo de la infección por SARS-CoV-2/COVID-19 en adulto mayor multimorbido con enfermedad renal crónica
Authors: Ramírez Marmolejo Roberto , Yomayusa González Nancy , González González Camilo Alberto , Yama Erika , Vargas Juan Guillermo , Rico Fontalvo Jorge Eduardo , Ariza García Amaury Miguel , Aroca Gustavo , Baquero Richard , Chacón Acevedo Kelly Rocio , Torres Rodolfo , Robayo Adriana , Mercado Juri Álvaro , Rebolledo Carlos , Gayón Diana , Cárdenas Ramírez Héctor Mauricio , Villanueva Bendek Ignacio , Raoch Ingrid , Galeano Javier , Coronado Daza Jorge , Aristizábal Gómez Leidy Yoana , Vargas María José , Rodríguez Sánchez Martha Patricia , Alfaro Tejada Mercedes , Tobón Pérez Natalia Carolina , Daza Arnedo Rodrigo , Musso Carlos Guido , Mera María Victoria 
Published: September 2021

Introducción: La infección por SARS-CoV-2 es una pandemia con importante impacto en población adulta mayor con múltiples morbilidades.
Objetivo: Desarrollar mediante un consenso de expertos, recomendaciones informadas en evidencia para la prevención, diagnóstico y manejo de infección por SARS CoV2/COVID-19 en paciente adulto mayor multimorbido con enfermedad renal crónica.
Metodología: A partir de la evidencia recolectada a través de una revisión de literatura en Pubmed, Embase y sociedades científicas, se formularon recomendaciones que fueron sometidas a la consulta de expertos en nefrología, geriatría y cuidados paliativos. La calidad de evidencia se evalúo con herramientas en función del tipo de documento. Las recomendaciones aprobadas fueron clasificadas de acuerdo a su dirección y fuerza.
Resultados: Veintidós expertos declararon su conflicto de interés y diligenciaron la herramienta de consulta entre el 02 y 10 de agosto de 2020. El porcentaje de acuerdo por cada recomendación oscilo entre el 90.9 y 100%. Se presentan 32 recomendaciones para el manejo de la infección por SARS-CoV-2 en paciente adulto mayor multimorbido con enfermedad renal crónica.
Conclusión: Las recomendaciones formuladas orientan la toma de decisiones de los profesionales de la salud involucrados en la atención de pacientes mayores con enfermedad renal crónica y otras morbilidades que presentan infección por SARS-CoV-2.
As faces de D. Dinis: a construção imagética do sexto rei português (1279-1325)
Authors: Sousa Cleusa Teixeira , Noronha Gilberto Cézar de 
Published: September 2021

A investigação que ora apresentamos visa analisar os discursos imagéticos e textuais, construídos em torno da figura de um rei - D. Dinis -, realçando a ideia de poder que esteve atrelada a esta construção. Para tanto, buscamos perscrutar os símbolos que se destinaram a compor, propagar e sustentar a potencialidade impelida pela incorporação de elementos que justificam e consolidam a imagem que seus idealizadores buscaram erigir, tomando como base as obras, de Peter Burke em A fabricação do rei, Marc Bloch em Os reis taumaturgos e Ernest Katorowicz em Os dois corpos do rei, dentre outros escritos literários e historiográficos que nos conduziram no desenvolvimento de reflexões sobre as imagens criadas acerca da figura deste monarca, conforme os interesses daqueles que as delineavam. Nesse sentido, uma das facetas mais exploradas num contexto monárquico medieval para sustentar e propagar a imagem de um rei, está atrelada à justiça e à sabedoria, por se tratar de fatores de alta eficiência quanto a sua capacidade de persuasão coletiva, a qual induz os seus correligionários e a sociedade a considerá-lo único em seu tempo, ao ponto de corroborar para a criação de uma atmosfera favorável à rememoração de uma boa memória daquele monarca e de seu reinado.
A sátira, o riso e o absurdo em duas peças do teatro de Qorpo Santo
Authors: Ribeiro da Silva Erlândia , Vitor Cei  
Published: September 2021

RESUMO:
Este trabalho tem como objetivo investigar de que maneira a sátira, o riso e o absurdo destacam-se na obra do escritor Qorpo Santo (1829-1883) que até os dias atuais permanece esquecido da crítica literária nacional, tendo algum destaque nos anos 1970 com a tônica do Teatro do absurdo, mas caindo no esquecimento nas próximas décadas. As peças analisadas nesse trabalho serão O marinheiro escritor e Um credor na fazenda nacional que apesar de serem peças distintas entre si trazem uma mesma potência de estranheza, riso e acidez em seus elementos estéticos e conteudísticos. Além disso analisaremos quais as consequências o autor traz para o texto ao usar da sátira, do riso e do absurdo enquanto crítica a moralidade da época. Como base teórica para a sátira e o riso partimos dos escritos de Vladimir Propp (1992), quanto ao absurdo nos voltamos ao início do termo com Albert Camus (1970) e demais autores que nos ajudem a perceber tais nuances nas peças em destaque.

Palavras-chave: Sátira. Riso. Absurdo. Teatro. Qorpo Santo.