bluuebunny/crossref_metadata_2025_split huggingface dataset:
Desempeño de tres grupos raciales de novillos suplementados con subproductos agroindustriales en pastoreo
Authors: Mestra-Vargas Lorena Inés , Reza-García Sony , Ramírez-Toro Edison Julián , Medina-Herrera Diego 
Published: September 2020

El principal objetivo de esta investigación fue evaluar el desempeño productivo de tres grupos raciales de novillos recibiendo o no suplementación con subproductos de la agroindustria en condiciones de pastoreo en el caribe húmedo colombiano. Cuarenta y ocho novillos: Angus x Brahman (AxB), Simmental x Brahman (SXB) y Romosinuano x Brahman (RXB) con peso promedio de 274± 13,76 kg y 17 meses se distribuyeron aleatoriamente en dos tipos de manejo alimenticio; con suplementación alimenticia (CSA: 24 animales) y sin suplementación alimenticia (SSA: 24 animales) en cada grupo racial, usando un diseño completo al azar (DCA). La suplementación consistió de una mezcla de salvado de arroz (56,5%), semilla de algodón (43,5%) y sal mineralizada (100 g/animal/día). Las mayores ganancias diarias de peso (GDP) fueron observadas en los animales de los tratamientos AxB CSA, SxB CSA y RxB CSA (p=0,001) con 730, 942 y 650 g/animal/día, respectivamente. Las GDP de los animales de los tratamientos AxB SSA, SxB SSA y RxB SSA correspondieron a 560, 520, y 608 g/animal/día. En cuanto a las mediciones de composición corporal por ultrasonido, los mayores atributos del área del ojo del lomo, (p=0,0175) lo presentaron los tratamientos AxB CSA (43,73±2,31 cm2) y RxB CSA (45,51±2,34 cm2) y para el espesor de grasa del anca (p=0,0229), el tratamiento RxB CSA (3,97 ± 0,32 mm). La mayor producción de carne, kg/ha proyectada a un año, correspondió al promedio de los biotipos CSA con 1.131,33 kg/ha/año, superando en 27,5% la producción de biotipos SSA de 821,26 kg. A partir de los resultados obtenidos en esta investigación, la suplementación de novillos en pastoreo con subproductos de la agroindustria se convierte en una actividad productiva para incrementar la GDP y producción de carne kg/ha, reflejando el potencial de esta práctica como una estrategia válida para el desarrollo de sistemas de producción de carne más eficientes y competitivos para la región del caribe húmedo colombiano.
Effects of Coronavirus (COVID-19) Pandemic on Health Anxiety Levels of Healthcare Professionals
Authors: KILINÇEL Şenay , TUNCER Zeynep , KILINÇEL Oğuzhan , AKPINAR ASLAN Esma , AY Rukiye , ERZİN Gamze , ÇELİKBAŞ Zekiye , AKKAYA Cengiz 
Published: September 2020

ABSTRACT
Objective: We aimed to determine the effects of the COVID-19 outbreak on health workers' health concerns and life.
Methods: The study included 293 healthcare professionals reached via e-mail. A questionnaire created by researchers and health anxiety inventory were applied online to all participants. The questionnaire questions investigated the sociodemographic characteristics of the participant, whether he received psychological support during the COVID-19 outbreak, whether he had a chronic disease, whether he had problems with the care of his children, whether he was actively involved in the COVID clinic / service, and how his social and work life was affected.
Results: Participants consisted of 73 doctors, 145 nurses and 75 other healthcare professionals (OHP). It was determined that the COVID-19 test was performed to the healthcare personnel in the risk group at a very low rate (1.4%). The number of people receiving psychiatric support during the COVID-19 outbreak was 59 (20.1%). It was determined that the COVID-19 outbreak affected business life and social life of healthcare professionals very much and significantly (p
Characterization of Major Fault Systems in the Kachchh Intraplate Region, Gujarat, India, by Focal Mechanism and Source Parameters
Authors: Kamra Charu , Chopra Sumer , Yadav Ram Bichar Singh , Joshi Vishwa 
Published: September 2020

AbstractThe focal mechanism and source parameters of 41 local earthquakes (Mw 4.0–5.1) that occurred in the Kachchh rift basin, which is seismically one of India’s most active intraplate regions, are determined to characterize various active fault systems in that region. The tectonics in the rift basin are heterogeneous and complex. In the present study, it was found that one-third of the earthquakes exhibit reverse mechanism and three-fourth are either strike slip or have some components of strike slip. Thus, we conclude that transverse tectonics are currently dominant in the Kachchh rift. These transverse faults are preferably oriented in the northeast–southwest and northwest–southeast directions in the eastern and western parts of the rift, respectively. The movement is sinistral and dextral on faults that are oriented in the northeast–southwest and northwest–southeast directions, respectively. These transverse faults are almost vertical (dip&gt;70°) and mostly blind with no surface expressions. Most of the significant faults that strike east–west dip toward the south and are listric. The stress drop of these 41 earthquakes ranges between 2.3 and 10.39 MPa. It was found that the stress drop of earthquakes may depend on the focal mechanism and is independent of focal depths. The average stress drop is found to be the highest (7.3 MPa) for the earthquakes that show a dominant normal mechanism accompanied by strike slip (5.4 MPa) and reverse (4.7 MPa). The average stress drop of the Kachchh intraplate region is 5.3 MPa, which is consistent with other intraplate regions of the world. A conceptual model of the fault system in the Kachchh region is proposed, based on the results obtained in the present study.
A Strong-Motion Database of Costa Rica: 20 Yr of Digital Records
Authors: Moya-Fernández Aarón , Pinzón Luis A. , Schmidt-Díaz Victor , Hidalgo-Leiva Diego Antonio , Pujades Luis G. 
Published: September 2020

AbstractIn this article, we present a strong-motion database from earthquakes recorded by the Earthquake Engineering Laboratory at the University of Costa Rica. The database consists of 2471 three-component accelerograms from 155 digitally recorded events. It covers the last 20 yr of measurements, including records from the 5 September 2012 Mw 7.6 Nicoya earthquake. The engineering and seismological communities can use this data either to conduct new research or to improve seismic hazard studies in the region. A catalog is also available with metadata of each record containing several intensity measures from the ground-motion time histories.
¿En qué consiste enseñar los géneros textuales en la escuela?
Authors: Riestra Dora María 
Published: September 2020

En el marco del interaccionismo sociodiscursivo (ISD), desde las referencias de Jakubinskij (1923/2018) y Voloshinov (1929/2009), los conceptos de diálogo y de género de la palabra conforman el punto de partida teórico para definir las formas de la interacción humana, de acuerdo con las propuestas teórico-metodológicas de Bronckart (1997; 2004; 2007) y de Schneuwly (1994). Como los géneros constituyen nuestro objeto de enseñanza son, en primer término, nuestro objeto de conocimiento. En el contexto latinoamericano, reconocemos los aportes teórico-prácticos de Marcuschi (2003) y de Machado (2009) que nos permiten discutir algunos aspectos centrales de las propuestas didácticas aplicadas. Por nuestra parte, en las investigaciones abordamos la relación entre el modelo didáctico y los géneros textuales de donde deriva, como una problemática central frente a la modelización de los géneros, la articulación entre las capacidades de lenguaje desarrolladas por los alumnos y las capacidades potenciales a desarrollar. La enseñanza de la lengua y la literatura desde los géneros textuales involucra, necesariamente, el desarrollo de las capacidades de lenguaje y la enseñanza de la gramática de las lenguas. En esta dirección, nuestro trayecto didáctico de uso, sentido y forma, enfoca la actividad de lenguaje de los géneros con los razonamientos que se realizan a través de los textos (como acciones de lenguaje) y de los tipos discursivos (como operaciones psicoverbales), para introducir la reflexión metalingüística.
Land and Resources Development and Research on Regional Economic Development
Authors: Li Wangye 
Published: September 2020

<p>Since the implementation of the reform and opening-up policy, the domestic economy has been rapid developing and the focus of social construction has gradually shifted to economic construction. In the process of social and economic development, more attention is paid to the use and development of resources. Among them, the important material basis for the survival and development of residents is land and resources. The relevant managers are required to be fully aware of the relevance between regional economic development and land and resources development, so as to make full use of land and resources. This article is mainly about the research of land and resources development and regional economic development, for the reference of relevant professionals.</p>
A New Method for Correcting Shale High-Pressure Adsorption Curves Based on Instantaneous Adsorption Capacity
Authors: Duan Xianggang , Hu Zhiming , Cai Changhong , Li Wuguang , Chang Jin , Shen Rui , Qian Cao 
Published: September 2020

Summary
A high-pressure isothermal adsorption curve is the basis of calculating the amount of gas adsorbed in a shale reservoir. Although shale gas adsorption measurements report an excess adsorption amount as a function of pressure, this leads to a widely known effect in which adsorption measurements show a decrease in the excess adsorption amount at high pressure. Therefore, it is not appropriate to use the excess adsorption amount to calculate the amount of gas adsorbed. Understanding adsorption mechanics and correcting the high-pressure adsorption curve of shale is critical for accurate assessments of adsorbed shale gas. This study uses a high-pressure (more than 50 MPa) experimental setup addressing this effect in the context of hydrocarbon gas (methane) in shales. By observing the change in adsorption amount between two pressure measurement points, the instantaneous adsorption capacity (IAC) is defined to calculate the cumulative adsorption capacity (CAC). Based on an analysis of the adsorption mechanism and measurements, a new method is proposed to correct the adsorption curves and obtain absolute adsorption values. The results show that the IAC is lower than zero when the testing pressure is higher than 15 MPa. This is because the commonly used volumetric method for calculating adsorption capacity does not consider the volume of the adsorption phase. Based on the assumption that the IAC is not less than zero, the volume of the adsorbed phase at different pressures is calculated by defining the equivalent diameter of the adsorbed molecules. The corrected results show that the calculated equivalent diameter of an adsorbed methane molecule is 0.58 to 0.65 nm. Based on the modified instantaneous adsorption curve, a high-pressure adsorption model is established to fit and predict the CAC. This model provides a simpler and more practical method for obtaining the accurate amount of shale gas adsorbed.
Efficient Preparation of Nano-Starch Particles and Its Mechanism of Enhanced Oil Recovery in Low-Permeability Oil Reservoirs
Authors: Zhang Lei , Jing Cheng , Khan Nasir , He Yanlong , Gu Xiaoyu , Zheng Liming 
Published: September 2020

Summary
As development of low-permeability oil reservoirs continues to increase, it urgently needs an efficient enhanced oil recovery (EOR) technology to adapt to the new situation and requirement of oilfield exploitation. Although the application of nanomaterials for the EOR of low-permeability oil reservoirs has initially obtained good results, the types of currently used nanomaterials in the field of EOR are limited, and the mechanism of EOR is still unclear.
In this paper, a type of nanosized starch particle is efficiently prepared using the method of precipitation with the help of ultrasonic oscillation. Under ultrasonic oscillation, the viscosity of starch paste can be significantly decreased, which is beneficial for the precipitation of starch nanoparticles. After ultrasonic oscillation, the size of the developed nanoparticles is smaller and controlled during the precipitation of starch paste using ethanol as the precipitating agent. The developed nanosized starch particles are suitable for the low-permeability oil reservoirs with low-salinity water.
Subsequently, the mechanism of EOR of the developed nanosized starch particles is systematically studied through laboratory experiments. In addition to changing the wettability of rock surface and decreasing oil/water interfacial tension (IFT), the nanosized starch particles can effectively change the motion state of water molecules and cause the change of the structure of water molecules. In the low-permeability core, the displacement front of the nanosized starch solution is uniform, and the sweep volume of the nanosized starch solution flooding is large. Because of a higher sweep volume and a smaller adsorption loss, nanosized starch solution flooding can achieve a better effect of oil recovery than surfactant flooding in 30 m of low-permeability porous medium. The conclusions can provide a new guidance for EOR technology to support the efficient development of low-permeability oil reservoirs.
Demographic and cardiovascular risk factors associated with drug use in truck drivers in the state of Sao Paulo, Brazil: A cross-sectional study.
Authors: Pereira Mariana Moura , Mansur Antonio Padua , Takada Julio Yoshio , Leyton Vilma 
Published: September 2020

Abstract

Background: The irregular routine of truck drivers favors the development of chronic noncommunicable diseases (NCDs), especially cardiovascular diseases (CVDs), which can be exacerbated by the use of illicit drugs. Methods: A cross-sectional study was carried out with data from 2,071 truck drivers who traveled through the state of São Paulo between 2010 and 2016. Socioeconomic and occupational variables, risk factors for CVD, use of illicit drugs were analyzed. Clinical and toxicological tests were also carried out. Results: The average age of the truck drivers was 42.27 ± 11.07 years, and the use of illicit drugs, at least once while working, was reported or detected in 388 (18.7%) drivers. Compared to non-users, drug users were younger (37.25 ± 9.45 vs. 43.43 ± 11.1 years; p <0.001) and single (43.3% vs. 28.4%; p <0.001). The independent variables age [OR = 0.93 (95% CI: 0.91 - 0.95; p<0.001)], smoking [OR = 2.18 (95% CI: 1.39 - 3.44; p = 0.001)], alcohol consumption [OR = 1.626 (95% CI: 1.06 - 2.49; p = 0.026)] and hours of driving per day [OR = 1.08 (95% CI: 1.01 - 1.15; p = 0.012)] were also associated with the use of illicit drugs. Conclusion: The use of illicit drugs was higher in young and single drivers and was associated with a higher prevalence of smoking, alcohol consumption and more driving hours, which are risk factors for NCDs, CVD and traffic accidents.
The Epidemiological and Economic Impact of a Cell-Based Quadrivalent Influenza Vaccine in an Adult Population in the US: A Dynamic Modeling Approach
Authors: Nguyen Van Hung , Hilsky Yvonne , Mould-Quevedo Joaquin 
Published: September 2020

Abstract
Background: Mutations of the H3N2 vaccine strain during the egg-based vaccine manufacturing process seem to partly explain the suboptimal effectiveness of traditional seasonal influenza vaccine. Cell-based influenza vaccines avoid such egg-adaptation, thereby improving antigenic match and vaccine effectiveness. The objective of this study was to evaluate the public health and economic impact of a cell-based quadrivalent influenza vaccine (QIVc) in adult population (18-64 years) compared to the standard egg-based quadrivalent influenza vaccine (QIVe), in the US. Methods: The impact of QIVc over QIVe in terms of public health and costs outcomes was estimated using a dynamic SEIR transmission model. The model is age-structured and accounts for 4 circulating influenza strains (A/H1N1pdm9, A/H3N2, B(Victoria), and B(Yamagata)). It was calibrated on US attack rate and strain circulation for the influenza seasons 2013-2018. US specific absolute vaccine effectiveness for QIVe, specific hospitalization rate, mortality rate, Quality-Adjusted Life Years (QALYs) and costs were extracted from published literature. Relative vaccine effectiveness of QIVc over QIVe for subjects 18-64 years of age was obtained from a US retrospective cohort study. Robustness of the results was assessed in univariate and probabilistic sensitivity analyses.Results: Switching from QIVe to QIVc in the 18-64 year-old population may prevent 5.7 M symptomatic cases, 1.8 M outpatient visits; 50K hospitalizations and 5,453 deaths annually. The switch could save 128 K QALYs and US$ 845M in direct costs, resulting in a cost-saving alternative in a 3-year time horizon analysis. Probabilistic sensitivity analyses confirmed the robustness of the cost-saving result.Conclusions: The analysis shows that QIVc is expected to prevent a substantial number of hospitalizations and deaths, and would result in substantial savings in health care costs.
Mediation of the salicylic acid pathway by ROS1 in response to abiotic stresses
Authors: Yang Liping , Jin Taicheng , Wu Yanju , Lang Chenjing , Meng Dawei , Wang Yue , Zhou Xiaofu 
Published: September 2020

Abstract
Background: DNA methylation plays an important role in the growth and development of plants in response to various abiotic stresses. Salicylic acid (SA) is an important signaling molecule that is synthesized by plants and induces the expression of defense genes. Results: In this paper, we investigated the molecular mechanisms by which an upstream regulator (ACD6) in the SA pathway, an ABA pathway-related gene (ACO3), and a stress resistance gene (GSTF14) were induced by various abiotic stresses. The results demonstrated that abiotic stresses, including drought, cold, and salt stresses, induced the demethylation of the repeats in the promoters of ACD6, ACO3, and GSTF14 and transcriptionally activated their expression. Furthermore, our results revealed that ROS1-mediated DNA demethylation plays an important role in the process of transcriptional activation of ACD6 and GSTF14 when Arabidopsis plants were under cold stress. Conclusion: Our results confirmed that ROS1 plays an important role in the process of defense genes in the SA pathway and stress resistance gene GSTF14 in response to abiotic stresses.
Leadership Perspectives on Learning Health Systems: a qualitative interview study
Authors: Enticott Joanne , Braaf Sandy , Johnson Alison , Jones Angela , Teede Helena 
Published: September 2020

Abstract
Background: Integrated utilisation of digital health data has the power to transform healthcare to deliver more efficient and effective services, and the learning health system (LHS) is emerging as a model to achieve this. The LHS uses routine data from service delivery and patient care to generate knowledge to continuously improve healthcare. The aim of this project was to explore key features of a successful and sustainable LHS to inform implementation in an Academic Health Science Centre context.Methods: We purposively identified and conducted semi-structured qualitative interviews with leaders, experienced in supporting or developing data driven innovations in healthcare. A thematic analysis using NVivo was undertaken.Results: Analysis of 26 interviews revealed five themes thought to be integral in an effective, sustainable LHS: (1) Systematic approaches and iterative, continuous learning with implementation into healthcare contributing to new best-practice care; (2) Broad stakeholder, clinician and academic engagement, with collective vision, leadership, governance and a culture of trust, transparency and co-design; (3) Skilled workforce, capability and capacity building; (4) Resources with sustained investment over time and; (5) Data access, systems and processes being integral to a sustainable LHS. Conclusions: This qualitative study provides insights into the elements of a sustainable LHS across a range of leaders in data-driven healthcare improvement. Fundamentally, an LHS requires continuous learning with implementation of new evidence back into frontline care to improve outcomes. Structure, governance, trust, culture, vision and leadership were all seen as important along with a skilled workforce and sustained investment. Processes and systems to optimise access to quality data were also seen as vital in an effective, sustainable LHS. These findings will inform a co-designed framework for implementing a sustainable LHS within the Australian healthcare and Academic Health Science Centre context. It is anticipated that application of these findings will assist to embed and accelerate the use of routine health data to continuously generate new knowledge and ongoing improvement in healthcare delivery and health outcomes.
iTRAQ-based comparative proteomic analysis of differences in the protein profiles of stems and leaves from two alfalfa genotypes
Authors: Sun Hao , Yu Jie , Zhang Fan , Kang Junmei , Li Mingna , Wang Zhen , Liu Wenwen , Zhang Jiaju , Yang Qingchuan , Long Ruicai 
Published: September 2020

Abstract
Background: To explore the molecular regulatory mechanisms of early stem and leaf development, proteomic analysis was performed on leaves and stems of F genotype alfalfa, with thin stems and small leaves, and M genotype alfalfa, with thick stems and large leaves.Results: Based on fold-change thresholds of >1.20 or <0.83 (p<0.05), a large number of proteins were identified as being differentially enriched between the M and F genotypes: 249 downregulated and 139 upregulated in stems and 164 downregulated and 134 upregulated in leaves. The differentially expressed proteins in stems were mainly involved in amino acid biosynthesis, phenylpropanoid biosynthesis, carbon fixation, and phenylalanine metabolism. The differentially enriched proteins in leaves were mainly involved in porphyrin and chlorophyll metabolism, phenylpropanoid biosynthesis, starch and sucrose metabolism, and carbon fixation in photosynthetic organisms. Six differentially enriched proteins were mapped onto the porphyrin and chlorophyll metabolism pathway in leaves of the M genotype, including five upregulated proteins involved in chlorophyll biosynthesis and one downregulated protein involved in chlorophyll degradation. Eleven differentially enriched proteins were mapped onto the phenylpropanoid pathway in stems of the M genotype, including two upregulated proteins and nine downregulated proteins.Conclusion: Enhanced chlorophyll synthesis and decreased lignin synthesis provided a reasonable explanation for the larger leaves and lower levels of stem lignification in M genotype alfalfa. This proteomic study aimed to classify the functions of differentially enriched proteins and to provide information on the molecular regulatory networks involved in stem and leaf development.