bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mental health status and associated contributing factors among the Hakka elderly in Fujian, China
Authors: Liu Xiaojun , Liu Fengyu , Ruan Wenqian , Chen Yating , Qu Shuming , Wang Wenxin 
Published: July 2022

PurposeLittle is known about the mental health of the Hakka elderly. This study explores the status of, and factors associated with mental health among Hakka elderly populations from Fujian, China.MethodsThis is a cross-sectional, community-based survey study containing a total of 1,262 valid samples. The Chinese version Symptom Checklist-90-R (SCL-90-R) was used to assess the mental health status of the Hakka elderly. We used t-tests to compare the differences for 10 dimensions of SCL-90-R scores between the Chinese national norm and the Hakka elderly. Univariate and multivariate analysis were performed by using linear regression analysis to identify the main socio-demographic factors that were most predictive of the total score of SCL-90-R in the Hakka elderly.ResultsThe scores of somatization (1.78 ± 0.55 vs. 1.40 ± 0.46, P &lt; 0.001) and phobic anxiety (1.21 ± 0.36 vs. 1.17 ± 0.31, P &lt; 0.001) for the Hakka elderly in Fujian appeared to be significantly higher than the Chinese norm. The higher total scores of SCL-90-R were found among females (β = 0.030, P = 0.044), widowed persons (β = 0.053, P = 0.021), those with parent(s) alive (β = 0.047, P = 0.019), and those with poorer self-rated health status (β = 0.110, P &lt; 0.001). The lower total scores of SCL-90-R were found among those who were currently living in town, those with lower education level, those with higher average annual household incomes, and those who were living with spouse or children.ConclusionThe worse mental health conditions of the Hakka elderly in somatization and phobic anxiety were detected. The overall mental health status was shown to be worse among females, widowed persons, those who were living in village, those with lower education, and those with father or/and mother alive.
Health status and public health education for internal older migrants in China: Evidence from a nationally representative survey
Authors: Zeng Wen , Wang Cui , Chen Hongbo , Tong Beibei , Li Dan , Zou Ziqiu , Liu Peiyuan , Yao Yuanrong , Shang Shaomei 
Published: July 2022

BackgroundSelf-rated health has been widely used as a useful screening tool to subjectively evaluate individuals' health status. Under the context of the rapid growth of aging, there was a dramatic rapid expansion in internal older migrants in China. Serious concerns on the issues of health status continue to attract quite a lot of attention over the past decades. Public health education is one of the most important health care services and methods to improve individuals' health status. However, most previous studies focus on the utilization of public health services such as visiting to doctors, physical examination, and hospitalization. There was limited evidence on the self-rated health and public health education of older migrants.ObjectivesThe study aimed to evaluate self-rated health and the associated determinants in older migrants, as well as to gain a deeper insight into the current status of public health education received by older migrants.MethodsWe derived the data from the National Migrants Population Health and Family Planning Dynamic Monitor Survey 2018, a cross-sectional study, for secondary analysis. Internal migrants aged 60 years old or over were included in the study. Self-rated health was the dependent variable, while sociodemographic characteristics were the independent variable. The univariate and multivariate analyses were performed by Stata 15.1.ResultsA total of 5,589 older migrants were included in the study. Eighty-two percentage of older migrants reported healthy self-rated health. There was a significant association between age, gender, minzu, education level, monthly income, public health education, and self-rated health (P &lt; 0.5). However, the proportion of older migrants that received specific public health education was &lt;50%. The most common approach to receiving public health education was through the leaflet, while &lt;20% of older migrants received public health education through public consultation and one-to-one education.ConclusionsIt was necessary to promote the publicity of public health education in older migrants through easy access and diverse approaches in order to effectively spread health-related knowledge to older migrants to satisfy their health needs and maintain their health.
Blunt splenic injury: Assessment of follow-up CT utility using quantitative volumetry
Authors: Dreizin David , Yu Theresa , Motley Kaitlynn , Li Guang , Morrison Jonathan J. , Liang Yuanyuan 
Published: July 2022

PurposeTrials of non-operative management (NOM) have become the standard of care for blunt splenic injury (BSI) in hemodynamically stable patients. However, there is a lack of consensus regarding the utility of follow-up CT exams and relevant CT features. The purpose of this study is to determine imaging predictors of splenectomy on follow-up CT using quantitative volumetric measurements.MethodsAdult patients who underwent a trial of non-operative management (NOM) with follow-up CT performed for BSI between 2017 and 2019 were included (n = 51). Six patients (12% of cohort) underwent splenectomy; 45 underwent successful splenic salvage. Voxelwise measurements of splenic laceration, hemoperitoneum, and subcapsular hematoma were derived from portal venous phase images of admission and follow-up scans using 3D slicer. Presence/absence of pseudoaneurysm on admission and follow-up CT was assessed using arterial phase images. Multivariable logistic regression was used to determine independent predictors of decision to perform splenectomy.ResultsFactors significantly associated with splenectomy in bivariate analysis incorporated in multivariate logistic regression included final hemoperitoneum volume (p = 0.003), final subcapsular hematoma volume (p = 0.001), change in subcapsular hematoma volume between scans (p = 0.09) and new/persistent pseudoaneurysm (p = 0.003). Independent predictors of splenectomy in the logistic regression were final hemoperitoneum volume (unit OR = 1.43 for each 100 mL change; 95% CI: 0.99–2.06) and new/persistent pseudoaneurysm (OR = 160.3; 95% CI: 0.91–28315.3). The AUC of the model incorporating both variables was significantly higher than AAST grading (0.91 vs. 0.59, p = 0.025). Mean combined effective dose for admission and follow up CT scans was 37.4 mSv.ConclusionFollow-up CT provides clinically valuable information regarding the decision to perform splenectomy in BSI patients managed non-operatively. Hemoperitoneum volume and new or persistent pseudoaneurysm at follow-up are independent predictors of splenectomy.
Phosphorus Stock Depletion and Soil C:N:P Stoichiometry Under Annual Crop Rotations and Grassland Management Systems Over 13 Years
Authors: Somavilla André , Caner Laurent , da Silva Isley Cristiellem Bicalho , Rheinheimer Danilo dos Santos , Chabbi Abad 
Published: July 2022

Phosphorus (P) nutrition is essential to both plant yield and soil organic matter (SOM) input. However, continuous extraction of P by plants and biomass harvesting can lead to soil P stock depletion, a reduction in crop yields and ultimately a reduction in organic matter input to the soil. In this work, we analysed P, C and N stock trends in the 0-30 cm topsoil layer cultivated with permanent cropland (CC) and mowed permanent grassland (GG) for 13 years. In addition, we characterized the changes in P organic forms by using 31P-NMR. The results showed that the amount of P exported within 13 years was 10% greater in GG than in CC (295 and 268 kg ha-1, respectively). The total P stocks decreased under both the CC and GG management systems (0.30 and 0.25 Mg ha-1, respectively). This depletion was mainly observed in total Pi forms, which recorded reductions of 0.75 and 0.29 Mg ha-1 in GG and CC, respectively. The total Po stock increased by 42.6% in GG; these results were consistent with the increase in C and N stocks in GG (2.6 and 0.19 Mg ha-1, respectively) and their reduction in CC (-4.2 and -0.38 Mg ha-1, respectively). Although P depletion mainly affected the P pool presenting the highest lability (labile P), this depletion did not have a negative effect on plant yield after 13 years due to the buffering capacity of P pools presenting less lability (moderately labile P). Mowing permanent grasslands led to a change in the pool of labile P from inorganic to organic forms and an increase in soil C and N stocks. Based on the 31P-NMR technique, permanent grasslands significantly reduced α-glycerophosphate and increased myo-IHP and adenosine monophosphate more than the permanent cropland. Although there was no significant decrease in productivity, the depletion of available P should be monitored over time, especially in mown permanent grassland crops, to prevent potential nutrient stress.
Rice Yield and Nitrogen Use Efficiency With System of Rice Intensification and Conventional Management Practices in Mkindo Irrigation Scheme, Tanzania
Authors: Mboyerwa Primitiva Andrea , Kibret Kibebew , Mtakwa Peter , Aschalew Abebe 
Published: July 2022

AimThis study investigated the impacts of system of rice intensification (SRI) and conventional management practice (CP) on rice growth, grain yield, and nitrogen use efficiency by nitrogen application.MethodsField experiments were conducted in wet and dry seasons; each season, the experiment was set in a split-plot randomized complete block design in triplicate with crop management practices in main plots and nitrogen levels in subplots.ResultsThe average grain yield by SRI was 7.1 and 6.7 t ha−1, while by CP it was 6.1 and 4.4 t ha−1in the wet and dry seasons, respectively. The grain yield of the SRI practice was significantly (p &lt; 0.05) greater than that of the conventional practice (CP) at all levels of nitrogen application. The average yield under the treatment interaction of SRI and nitrogen levels were increased by 13.1% in the wet season and 35.8 % in the dry season. Roots of SRI plants had significantly (p &lt; 0.05) greater fresh weight, length, and volume as indicated by increased root dry weight per hill. SRI improved crop growth, effective tillers, filled grains per panicle, grain filling rate, panicle weight, spikelet per panicle, straw yield, and 1,000-grain weight. Nitrogen application rate had a significant effect (p &lt; 0.05) on agronomic nitrogen use efficiency (ANUE). As the N application rate was increased beyond 90 kg N ha−1, the ANUE and partial factor productivity (PFP) under both SRI and CP were significantly decreased in both seasons.ConclusionOverall, the SRI production system with 60 kg N ha−1 improved rice growth, yield, and nitrogen use efficiency compared to the CP.
Modified subxiphoid approach for surgical resection of a retrosternal goiter
Authors: Wang Renfeng , Li Jianfeng , Jiang Jiahao , Ding Jianyong , Yang Minghui , Wang Shuai , Lin Miao 
Published: July 2022

BackgroundsUnilateral Video-Assisted Thorascopic Surgery (VATS) is a traditional minimally invasive transthoracic approach for the surgical resection of a subxiphoid goiter. Recently, the subxiphoid approach was recommended for an anterior mediastinal mass. This study aims to investigate the feasibility and efficacy of a modified subxiphoid VATS for the resection of a retrosternal goiter as an alternative transthoracic approach.MethodsWe retrospectively collected all patients who underwent subxiphoid VATS for the resection of a retrosternal goiter from June 2017 to June 2021 in the Zhongshan Hospital or the Zhongshan Hospital Xiamen branch. Ten patients were found. Patient characteristics, perioperative data, and surgical information were collected and further analyzed.ResultsIn our study, all 10 patients underwent a thoracoscopic subxiphoid resection of a retrosternal goiter. The mean age was 49.4 years, and all were female. The majority of patients (70%) were asymptomatic. All patients were assessed by CT imaging before surgery. The mean postoperative hospital stay was 4.9 days. The drainage tube was removed 3 days after operation, and the average drainage volume was 73.1 ml. Postoperative pain was mild, with an average pain grade of 2.4 (measured on a scale from 0 to 10, with lower scores indicating less pain). There were no conversions or perioperative complications in these 10 patients.ConclusionsMost retrosternal goiters can be completely resected through the modified subxiphoid approach after an adequate preoperative evaluation and careful intraoperative management. This thoracoscopic subxiphoid approach is feasible and safe for retrosternal goiter resection.
El Frontend. Diseño web adaptativo y diseño web responsivo para el desarrollo de aplicaciones web
Authors: Chavez Calderón Jhonny Xavier , Zambrano Romero Walter Daniel , Cedeño Palma Emilio Antonio , Zambrano Zambrano Dannyll Michellc , Cotera Ramírez Gabriel Agustín 
Published: July 2022

El desarrollo web ha evolucionado a gran escala, el presente artículo realiza una comparativa entre dos importantes marcos de diseño que son indispensables para el desarrollo de interfaces web, como son el marco responsivo y adaptativo, destacando sus principales ventajas y diferencias a través del método experimental, propiamente enfocado en el desarrollo de un portal web, que se desarrollará para mostrar información sobre la cantidad de investigaciones científicas que publican las Facultades de la Universidad Técnica de Manabí, para el estudio comparativo se usó la herramienta Google Page Speed Insights, donde se aplicaron métricas de evaluación impuestas por W3C, con respecto al rendimiento y optimización. Para garantizar la calidad de la investigación se aplicó el método Delphi, en un cuestionario dirigido a 50 Docentes de diferentes Universidades Ecuatorianas, con la finalidad de conocer el marco de diseño más adecuado al momento de desarrollar y producir sistemas web.
Evaluación de la dieta de un grupo de usuarios de gimnasios de musculación
Authors: Cartaya Quintero Rocio , Iglesias Guevara Dairon , Brito Llera Adriel , Pérez Santana Danae 
Published: July 2022

Los actuales estándares de belleza imponen al hombre fuerte y muscularmente definido como el ideal. A esto se suma el impacto positivo que tiene el ejercicio físico sobre la salud, de ahí que no sea de extrañar la tendencia cada vez mayor hacia la práctica de ejercicios físicos y de musculación, especialmente entre los jóvenes. Dicha actividad implica modificaciones en la dieta, generalmente sin asesoramiento especializado, siguiendo como pautas mayor consumo de proteínas y carbohidratos, no así de lípidos. Por tal motivo se evaluó la dieta de usuarios de dos gimnasios de musculación del consejo popular Versalles-Coronela del municipio La Lisa, La Habana. Participaron 45 voluntarios, distribuidos en tres grupos etarios (hasta 18 años, mayores de 18 y hasta 30 años y mayores de 30 años), a quienes se aplicó una encuesta de frecuencia de consumo de alimentos. Fueron procesados los datos con los programas Ceres+ y SPSS v22.0. Las dietas tuvieron un marcado exceso energético para los tres grupos etarios evaluados, aunque los aportes de los macronutrientes a la energía estuvieron en los rangos recomendados. Se detectaron valores altos de colesterol y azúcares simples, siendo el grupo etario intermedio el de mayor consumo. Por el contrario, existieron deficiencias en la fibra, algunas vitaminas y minerales que pueden poner en riesgo el rendimiento físico y la salud de estos usuarios de gimnasios. Las dietas evaluadas fueron inadecuadas para este sector poblacional y deben modificarse para mantener la salud y obtener los resultados físicos esperados.
Palabras clave: usuarios de gimnasios; dieta; nutrientes; salud.
Seguridad alimentaria en la comunidad rural Las Mercedes, Manabí-Ecuador
Authors: Loor Suárez Maria Lourdes , Sabando Vélez Katherine Gissell 
Published: July 2022

Con el objetivo de evaluar la seguridad alimentaria en la comunidad rural Las Mercedes (Manabí, Ecuador), se realizó un estudio observacional descriptivo, transversal y prospectivo. Se empleó muestreo probabilístico, aleatorio simple, sin remplazo utilizando la fórmula para población contable o finita. La muestra quedó constituida por 37 hogares, en los mismos se aplicaron dos encuestas dirigidas a obtener información acerca de los niveles de seguridad alimentaria mediante la escala de inseguridad alimentaria y frecuencia de consumo de grupos de alimentos a la muestra seleccionada. Se determinó que el 97 % de los hogares se encuentran en algún nivel de inseguridad alimentaria; mostrando que solo el 65 % tiene acceso a los comestibles. Se relacionó el nivel de inseguridad alimentaria con la frecuencia de consumo de alimentos y se encontró que, a mayor nivel de inseguridad alimentaria, menor era el acceso y consumo de alimentos sin alcanzar sus requerimientos nutricionales para mantener nutrición adecuada que garantice estado óptimo de salud.
Palabras clave: seguridad alimentaria; alimentos; consumo; acceso.
Temperature-dependent vibration energy harvesting performance of polyimide/(Na,K)NbO3 piezoelectric composites
Authors: Yamamoto Ryota , Hegendörfer Andreas , Mergheim Julia , Kakimoto Ken-ichi 
Published: July 2022

Abstract
A composite structure of piezoelectric particles and soft polymer composite material is one of the candidates that converts environmental vibration energy into electrical energy. Presently, expanding the usage of applications is needed in terms of the working environment at harsh temperatures. Polyimide is flexible and temperature-stable polymer. In this research, we report a synthesis of polyimide/(Na,K)NbO3 (PI/NKN) flexible composites. We constructed a setup, where vibration and heat are simultaneously applied to the PI/NKN composites. The frequency and temperature dependence of the output voltage were investigated at room temperature up to 200 °C. Relative permittivity, piezoelectric constant, and output voltage of the PI/NKN showed temperature stability. Flexibility and glass transition temperature of a polymer matrix are important factors. PI/NKN composites are potential energy harvesting materials with flexibility and excellent high-temperature stability.
An extraction method for areal forward current/voltage characteristics of circular GaN p+n diodes
Authors: Mochizuki Kazuhiro , Ohta Hiroshi , Mishima Tomoyoshi 
Published: July 2022

Abstract
Anode-size-independent forward current–density/voltage (V) characteristics of circular GaN p+n diodes were extracted (in the V range of 2.7−3.0 V) from measured ones by an estimation technique of the effective anode radius, followed by the least-squares fitting technique of peripheral-to-area ratio analysis. It was found that the extracted diffusion current of diodes with a higher p-type doping level is lower than that of diodes with a lower one and that both currents have an ideality factor of unity. Since these findings agree with the diffusion theory, the demonstrated method should be useful for theoretical analysis of GaN p+n diodes.
Design of Near-Field Beamforming for Large Intelligent Surfaces
Authors: Hu Sha , Wang Hao , ilter mehmet 
Published: July 2022

<p>In this paper, we propose a novel three-dimensional (3D) near-field beamforming (BF) design for Large Intelligent Surface (LIS). We firstly investigate the definitions of near-field and far-field of LIS, and derive the Fresnel near-field region where amplitudes variations are negligible and only phase variations worsen the harvested array-gains. We show that the Fresnel region which covers the majority part of near-field, can be enlarged by a factor of four when considering possible imperfectness from a conventional two-dimensional (2D) far-field BF. Therefore, it is of interest to design analog 3D-BF than can recover array-gain losses in this region. Secondly, with the proved decomposition theorem we show that the optimal 3D-BF can be decomposed into a 2D far-field BF and a one-dimensional (1D) near-field BF. The 2D far-field BF compensates phase variations from mismatches in the azimuth and elevation angles, while the 1D near-field BF compensates remaining phases variations caused by distance differences from the UE to different antenna-elements on LIS. Such a proposed “2D+1D” BF design reduces codebook size significantly and is fully compatible with the existing far-field BF in the fifth-generation new-radio (5G-NR) system. Thirdly, we analyze an optimal codebook design for the 1D near-field BF, and show that with a small codebook it can perform close to optimal. Numerical results further verify that our proposal is effective and robust to recover array-gains in the near-field of LIS. </p>
THE GAME OF LEARNING! APPROACHING ECOSYSTEMS THROUGH BOARD GAME DESIGN
Authors: Silveri Luana 
Published: July 2022

Game-based learning is proven to be a motivational and effective approach, especially in STEM education. However, the process of developing a game is rarely used as an educational tool. Ecology is part of the science curriculum in Italian high schools, but for students results not easy to understand the ecosystem structures and functions from a systemic perspective. Furthermore, addressing ecological issues in a changing world will request them not a reductionist approach but a systems perspective. In this work our main objective is to consider further possibilities offered by board games, exploiting not only the game experience but also the use of the game design process as an immersive motivational learning tool for science, with a learning by doing approach. Ten students have been engaged (16-18) in two activities: events to test and analyse cooperative board games and a laboratory for the development of a new board game on ecosystems ("YouTopia – La Valle ecosistemica"). Two focus groups were conducted, before and at the end of the laboratory, to test students' engagement and to collect feedback about the efficacy of the method to boost interest and specific knowledge in ecology. The research reveals that game development can foster system thinking skills among students, and act as a powerful learning tool for complex subjects such as ecology. Results are encouraging and the proposed approach has the potential to be applied and replicated in high school and middle school, to foster students’ engagement in tackling and understanding topics such as evolution, genetics other topics characterized by complexity and systemic approach. Preliminary results show as the YouTopia game could be a valid tool for citizenship education. By playing the game, students investigate and practice democracy, the mechanisms of land planning and natural resources protection, and the principle of coresponsibility in making choices for the future.
KNOWLEDGE NUGGETS INSTRUCTIONAL DESIGN V2.0 AND TESTING STRATEGY
Authors: Ploder Christian , Hazy Christoph , Gamper Laura , Ehrhardt Lisa 
Published: July 2022

Currently, the education sector is undergoing profound changes and, in parallel, making digital teaching formats essential. One of these upcoming formats is the so-called "Knowledge Nugget". Knowledge Nuggets are digital learning materials that are designed for self-directed learning. They are organized within small, defined topics and vary depending on their scopes and sizes. Differentiation goes along with the way learning material is prepared and conveyed but does not provide information about the amount of content or the shared knowledge's difficulty. Based on a paper at END2021, the next step sheds light on general design aspects to reduce the extrinsic cognitive load during learning. Hence, it is necessary to which kind of Knowledge Nuggets has been prepared and how the different nuggets are structured. How the information is prepared must be taken into account not to harm the students in their learning process. This paper aims to further develop the previous form of instructional design, adding general design factors and providing a well-planned testing strategy to verify the explained model.