bluuebunny/crossref_metadata_2025_split huggingface dataset:
SYSVENT: Prova de Conceito de um Protótipo para Ventilar Doentes em Cuidados Intensivos
Authors: Cortesão Nuno , Fernandes Marco , Pina Danielson , Fernandes Felipe , Machado José Vale , Carneiro António H. 
Published: November 2020

Introdução: A pandemia pelo novo coronavírus provocou rotura em hospitais de vários países por falta de recursos para ventilaçãoinvasiva. Assim, a Ordem dos Médicos convidou intensivistas que, em colaboração com a SYSADVANCE S.A., desenvolveram o SYSVENT OM1, um ventilador capaz de operar em modos controlados e assistidos (volume e pressão) e apto para tratar doentes em cuidados intensivos. Neste estudo fazemos a prova de conceito, comparando volume-corrente, pressão inspiratória e pressão positiva tele-expiratória programados, com os valores medidos pelo ventilador e por um equipamento de medição externo.Material e Métodos: Montámos o ventilador em série com um pulmão artificial e um analisador de fluxos. Medimos o volume-corrente expiratório e a pressão inspiratória, em três níveis de compliance e seis patamares de volume-corrente. A pressão positiva tele-expiratória foi medida com incrementos de 2 cmH2O ao longo de oito patamares. Para cada medição realizámos três leituras.Resultados: Considerando cada uma das três variáveis isoladamente, a média da diferença máxima entre os valores programados e os valores medidos situa-se, para todas elas, dentro do que considerámos ser aceitável para um modelo protótipo (volume-corrente = -28,1 mL, pressão inspiratória = 0,8 cmH2O e pressão positiva tele-expiratória = -1,1 cmH2O). Essa diferença é maior quando avaliada com o equipamento de medição externa comparativamente com o ventilador.Discussão: Os resultados mostraram uma boa capacidade de monitorização e de precisão. Documentaram-se limitações técnicas relacionadas com o pulmão artificial e com o analisador de fluxos que não desvirtuam os resultados, mas limitam a sua amplitude.Conclusão: Para os parâmetros testados, o ventilador apresenta boa performance de funcionamento, está de acordo com as premissasiniciais e tem potencial para uso clínico.
PIBIC PARÂMETROS COMPORTAMENTAIS DE FRANGOS DE CORTE ALIMENTADOS COM DIETAS CONTENDO DIFERENTES NÍVEIS DE VITAMINA E
Authors: Kleube Felix Monteiro Junior Jerry 
Published: November 2020

Objetivou-se avaliar os efeitos de diferentes níveis de vitamina E na alimentação de frangos de corte sobre os parâmetros comportamentais e o consumo de ração em diferentes fases de produção. Foram utilizados 240 pintos de corte, machos, com oito dias de vida da linhagem Cobb 500®. As aves foram homogeneizadas e distribuídas em delineamento inteiramente casualizado, com quatro tratamentos (50, 100, 150 e 200% das exigências de vitamina E), e seis repetições. As variáveis avaliadas foram os padrões comportamentais das aves, o consumo de ração ao longo de 24 horas e as imagens termográficas. Observou-se que os níveis crescentes de vitamina E nas dietas, não influenciaram os parâmetros comportamentais, comendo, bebendo, ócio e outras atividades. Não houve interação entre os níveis de vitamina E para as temperaturas superficiais máxima, mínima e a amplitude térmica, nos períodos da manhã e tarde. Os níveis de vitamina E nas dietas, não influenciaram o consumo de ração ao longo das 24 horas do dia. Conclui-se que os níveis de vitamina E nas dietas, não influenciaram os padrões comportamentais e o consumo de ração no período de 24 horas dos frangos de corte aos 21 e 42 dias de idade.
Palavras-chave: Antioxidante; Nutriente funcional; Micronutrientes.
Research on Bench Fatigue test method of frame under torsion condition
Authors: Zhang Bao , Li Zhi , Wang Yuanshao 
Published: November 2020

In order to predict the fatigue life of frame, a new bench test method of the frame torsion fatigue is proposed, which can approximately reflect the results of enhanced road test. The frame finite element model was established and the simulation was carried out to determine the dangerous position of fatigue life failure. The load spectrum of the fatigue dangerous position was collected, and the fatigue damage value was analyzed by the rain-flow counting method and Miner criterion. The equivalent conversion relationship of the fatigue life between bench test and road test was established. The mean error between theoretical calculation result and bench test result is 5.2 %; The mean error between theoretical calculation result and road test result is 3.85 %. The results showed that the bench test method of frame torsion fatigue can improve the precision and reliability of the frame fatigue life prediction.
Seismic responses of concrete rectangular liquid storage structure with large height-width ratio
Authors: Jing Wei , Xing Shangshang , Song Yu 
Published: November 2020

Concrete rectangular liquid storage structure (CRLSS) with a large height-width ratio has good application prospects due to saving land resources. 3-D Solid element and 3-D Fluid element are used to simulate structure and liquid; and free surface is set to simulate the liquid sloshing behavior. Based on potential flow theory, a three-dimensional numerical model for CRLSS with large height-width ratio is established by ADINA. Results show that wall tensile stress exceeds the concrete tensile strength 2.39 MPa when liquid level height reaches to 11.70 m. There are the optimal baffle positions which can ensure that the wall tensile stress is less than the concrete tensile strength when PGA is 0.22 g, and the wall tensile stress reaches the minimum value when the baffle height is 3.6 m. Opening size has little effect on the wall tensile stress, but it has a significant effect on the baffle tensile stress. Seismic capacity of CRLSS with large height-width ratio designed by using the optimal baffle position can meet the requirements when PGA is 0.22 g, and it is necessary to carry out further comprehensive damping measures when PGA reaches 0.62 g. The arrangement of horizontal baffle can provide an effective way for the engineering application of large height-width ratio CRLSS.
Combined APSO-ANN and APSO-ANFIS models for prediction of pressure loss in air-water two-phase slug flow in a horizontal pipeline
Authors: Moghaddas Faezeh , Kabiri-Samani Abdorreza , Zekri Maryam , Azamathulla Hazi M. 
Published: November 2020

Abstract
Prediction of air-water two-phase flow frictional pressure loss in pressurized tunnels and pipelines is essentially in the design of proper hydraulic structures and pump systems. In the present study artificial neural networks (ANN) and adaptive neuro-fuzzy inference system (ANFIS) are employed to predict pressure loss in air-water two-phase slug flow. Adaptive particle swarm optimization (APSO) is also applied to optimize the results of the ANN and ANFIS models. To predict the pressure loss in two-phase flow, the frictional pressure loss coefficient needs to be determined with respect to the effective dimensionless parameters including two-phase flow Froude and Weber numbers and the air concentration. Laboratory test results are used to determine and validate the findings of this study. The performances of the ANN-APSO and ANFIS-APSO models are compared with those of the ANN and ANFIS models. Different comparison criteria are used to evaluate the performances of developed models, suggesting that all the models successfully determine the air-water two-phase slug flow pressure loss coefficient. However, the ANFIS-APSO performs better than other models. Good agreement is obtained between estimated and measured values, indicating that the APSO with a conjugated ANFIS model successfully estimates the air-water two-phase slug flow pressure loss coefficient as a complex hydraulic problem. Results suggest that the proposed models are more accurate compared to former empirical correlations in the literature.
Simulation soil water–salt dynamics in saline wasteland of Yongji Irrigation Area in Hetao Irrigation District of China
Authors: Yuan Chengfu 
Published: November 2020

Abstract
In order to explore the regional water–salt balance mechanism in Hetao Irrigation District, field experiments were conducted in 2018 and 2019 in the Heji canal study area. The SWAP model was calibrated and validated based on field experiments' observed data. The SWAP model was used to simulate soil water–salt dynamics in saline wasteland after calibration and validation. The results showed that model simulation results of soil water content and soil salt concentration agreed well with the measured values. Soil water content and soil salt concentration changed obviously under the effect of farmland irrigation in the crop growing period. Soil salt was accumulated in saline wasteland. The soil salt accumulation of each soil layer in saline wasteland was 0.164, 0.092, −0.890 and −1.261 mg/cm3, respectively. Soil water content gradually increased and soil salt concentration gradually decreased in the autumn irrigation period. Soil salt was leached in the saline wasteland. The soil salt accumulation of each soil layer in the saline wasteland was −1.011, −1.242, −1.218 and −1.335 mg/cm3, respectively. The saline wasteland became a drainage and salt drainage region for cultivated land. The saline wastelands had an obvious role in adjusting salt balance and maintaining salt dynamic balance in Hetao Irrigation District.
Research on the schemes formulation and optimization method of sponge reconstruction in a highway service area
Authors: Peng Yu-hua , Li Zhuang , Ding Yong-shuai 
Published: November 2020

Abstract
This study proposed a method for constructing a low impact development (LID) plan to improve the utilization rate of rainwater in a highway service area and solve the problem of waterlogging. Firstly, based on the theory of LID, taking the total runoff as the control goal, and combining it with the functional zoning of the highway service area and the characteristics of LID facilities, several LID schemes were proposed. Then, the evaluation system of the LID scheme in service area was established by the analytic hierarchy process (AHP). These preliminary construction schemes were compared from three aspects (runoff control efficiency, economic efficiency and social efficiency) to determine the best LID plan. Finally, taking the Pu'er tunnel service area as an example, the construction scheme of the sponge city service area was optimized.
Use Characteristics and Triage Acuity of a Digital Symptom Checker in a Large Integrated Health System: Population-Based Descriptive Study
Authors: Morse Keith E , Ostberg Nicolai P , Jones Veena G , Chan Albert S 
Published: November 2020

Background
Pressure on the US health care system has been increasing due to a combination of aging populations, rising health care expenditures, and most recently, the COVID-19 pandemic. Responses to this pressure are hindered in part by reliance on a limited supply of highly trained health care professionals, creating a need for scalable technological solutions. Digital symptom checkers are artificial intelligence–supported software tools that use a conversational “chatbot” format to support rapid diagnosis and consistent triage. The COVID-19 pandemic has brought new attention to these tools due to the need to avoid face-to-face contact and preserve urgent care capacity. However, evidence-based deployment of these chatbots requires an understanding of user demographics and associated triage recommendations generated by a large general population.

Objective
In this study, we evaluate the user demographics and levels of triage acuity provided by a symptom checker chatbot deployed in partnership with a large integrated health system in the United States.

Methods
This population-based descriptive study included all web-based symptom assessments completed on the website and patient portal of the Sutter Health system (24 hospitals in Northern California) from April 24, 2019, to February 1, 2020. User demographics were compared to relevant US Census population data.

Results
A total of 26,646 symptom assessments were completed during the study period. Most assessments (17,816/26,646, 66.9%) were completed by female users. The mean user age was 34.3 years (SD 14.4 years), compared to a median age of 37.3 years of the general population. The most common initial symptom was abdominal pain (2060/26,646, 7.7%). A substantial number of assessments (12,357/26,646, 46.4%) were completed outside of typical physician office hours. Most users were advised to seek medical care on the same day (7299/26,646, 27.4%) or within 2-3 days (6301/26,646, 23.6%). Over a quarter of the assessments indicated a high degree of urgency (7723/26,646, 29.0%).

Conclusions
Users of the symptom checker chatbot were broadly representative of our patient population, although they skewed toward younger and female users. The triage recommendations were comparable to those of nurse-staffed telephone triage lines. Although the emergence of COVID-19 has increased the interest in remote medical assessment tools, it is important to take an evidence-based approach to their deployment.
ISO/IEEE 11073 Treadmill Interoperability Framework and its Test Method: Design and Implementation
Authors: Huang Zhi Yong , Wang Yujie , Wang Linling 
Published: November 2020

Background
Regular physical activity is proven to help prevent and treat noncommunicable diseases such as heart disease, stroke, diabetes, and breast and colon cancer. The exercise data generated by health and fitness devices (eg, treadmill, exercise bike) are very important for health management service providers to develop personalized training programs. However, at present, there is little research on a unified interoperability framework in the health and fitness domain, and there are not many solutions; besides, the privatized treadmill data transmission scheme is not conducive to data integration and analysis.

Objective
This article will expand the IEEE 11073-PHD standard protocol family, develop standards for health and fitness device (using treadmill as an example) based on the latest version of the 11073-20601 optimized exchange protocol, and design protocol standards compliance testing process and inspection software, which can automatically detect whether the instantiated object of the treadmill meets the standard.

Methods
The study includes the following steps: (1) Map the data transmitted by the treadmill to the 11073-PHD objects; (2) Construct a programming language structure corresponding to the 11073-PHD application protocol data unit (APDU) to complete the coding and decoding part of the test software; and (3) Transmit the instantiated simulated treadmill data to the gateway test software through transmission control protocol for standard compliance testing.

Results
According to the characteristics of the treadmill, a data exchange framework conforming to 11073-PHD is constructed, and a corresponding testing framework is developed; a treadmill agent simulation is implemented, and the interoperability test is performed. Through the designed testing process, the corresponding testing software was developed to complete the standard compliance testing of the treadmill.

Conclusions
The extended research of IEEE 11073-PHD in the field of health and fitness provides a potential new idea for the data transmission framework of sports equipment such as treadmills, which may also provide some help for the development of sports health equipment interoperability standards.
Abastecimiento de productos básicos a Zacatecas durante los siglos XVI y XVII
Authors: Gómez Murillo Ana Guillermina 
Published: November 2020

<p>Este artículo trata sobre los desafíos que conllevó el abasto de productos básicos a Zacatecas. Específicamente explica la conformación de regiones abastecedoras de granos, productos básicos y la organización del comercio en este real de minas novohispano que marcaría las nuevas rutas exploratorias de los peninsulares al septentrión y un nuevo derrotero económico con la consolidación de la minería como eje de la economía novohispana. Una pieza fundamental en la regularización del comercio fue el cabildo de la ciudad.</p>
Entre patriotas y polizones: polémicas letradas sobre los americanos en la prensa periódica (1810-1812)
Authors: Rosetti Mariana Inés 
Published: November 2020

<p>Las propuestas de la prensa hicieron uso en los años 1810-1812 del concepto de <em>americanidad </em>como una materia maleable desde la cual señalar injusticias y arbitrariedades. Para ello, los escritos públicos recurrieron a perspectivas en las que se construyeron aliados y enemigos y se utilizó el humor satírico como vía para suscitar la afinidad del lector. La flexibilidad del nombre <em>americanos</em> se utilizó como metáfora de la debilidad de autonomía política de las distintas provincias del continente americano. Nos interesa analizar al respecto algunas producciones de Juan López Cancelada que generaron respuestas vehementes del diputado de Tlaxcala en las Cortes de Cádiz, José María Guridi Alcocer, y de Servando Teresa de Mier. Estos tres pensadores hicieron uso de la prensa periódica para concretar o plantear soluciones políticas que los debates constitucionales erraban en contemplar o profundizar y lo hicieron recurriendo a los términos de patriotas y polizones.</p>
ANALISIS SISTEM TANDA PADA OBJEK WISATA PENDAKIAN GUNUNG GEDE PANGRANGO
Authors: Everlin Shierly , Saputra M Garry 
Published: November 2020

Nowadays, the government is trying to improve the quality of the tourism sector in Indonesia. The government has built a lot of supporting facilities for tourists both local and foreign. However, the case of lost mountain climbers is still common. In this research, there will be a discussion about the sign system that provides people with information in Gunung Gede Pangrango Nationa Park. This study is also discussing a little about the natural conditions on some of these mountains.The study was conducted by direct observation of the climbing site to see and analyze directly the existing sign system. In addition, a number of statistical data will be collected from the management by means of a short interview which will be used as supporting data or secondary data in the study. This research is a qualitative study by conducting a literature study. This literature study was carried out during the sign system analysis process.Placement of signs, legibility and the durability of materials in extreme mountain weather conditions are the aspects to be analyzed based on the science of Visual Communication Design. This research was conducted so that the manager, both local and government, are able to give more attention to the application of the sign system along the climbing track so that it can help reduce the possibility of a climber getting lost.
The Effect of Standard Versus Longer Intestinal Bypass on GLP-1 Regulation and Glucose Metabolism in Patients With Type 2 Diabetes Undergoing Roux-en-Y Gastric Bypass: The Long-Limb Study
Authors: Miras Alexander Dimitri , Kamocka Anna , Pérez-Pevida Belén , Purkayastha Sanjay , Moorthy Krishna , Patel Ameet , Chahal Harvinder , Frost Gary , Bassett Paul , Castagnetto-Gissey Lidia , Coppin Lucy , Jackson Nicola , Umpleby Anne Margot , Bloom Stephen Robert , Tan Tricia , Ahmed Ahmed Rashid , Rubino Francesco 
Published: November 2020

OBJECTIVE
Roux-en-Y gastric bypass (RYGB) characteristically enhances postprandial levels of glucagon-like peptide 1 (GLP-1), a mechanism that contributes to its profound glucose-lowering effects. This enhancement is thought to be triggered by bypass of food to the distal small intestine with higher densities of neuroendocrine L-cells. We hypothesized that if this is the predominant mechanism behind the enhanced secretion of GLP-1, a longer intestinal bypass would potentiate the postprandial peak in GLP-1, translating into higher insulin secretion and, thus, additional improvements in glucose tolerance. To investigate this, we conducted a mechanistic study comparing two variants of RYGB that differ in the length of intestinal bypass.

RESEARCH DESIGN AND METHODS
A total of 53 patients with type 2 diabetes (T2D) and obesity were randomized to either standard limb RYGB (50-cm biliopancreatic limb) or long limb RYGB (150-cm biliopancreatic limb). They underwent measurements of GLP-1 and insulin secretion following a mixed meal and insulin sensitivity using euglycemic hyperinsulinemic clamps at baseline and 2 weeks and at 20% weight loss after surgery.

RESULTS
Both groups exhibited enhancement in postprandial GLP-1 secretion and improvements in glycemia compared with baseline. There were no significant differences in postprandial peak concentrations of GLP-1, time to peak, insulin secretion, and insulin sensitivity.

CONCLUSIONS
The findings of this study demonstrate that lengthening of the intestinal bypass in RYGB does not affect GLP-1 secretion. Thus, the characteristic enhancement of GLP-1 response after RYGB might not depend on delivery of nutrients to more distal intestinal segments.
Association of Maternal Folate and Vitamin B12 in Early Pregnancy With Gestational Diabetes Mellitus: A Prospective Cohort Study
Authors: Chen Xiaotian , Zhang Yi , Chen Hongyan , Jiang Yuan , Wang Yin , Wang Dingmei , Li Mengru , Dou Yalan , Sun Xupeng , Huang Guoying , Yan Weili 
Published: November 2020

OBJECTIVE
To investigate the association of folate and vitamin B12 in early pregnancy with gestational diabetes mellitus (GDM) risk.

RESEARCH DESIGN AND METHODS
The data of this study were from a subcohort within the Shanghai Preconception Cohort Study. We included pregnancies with red blood cell (RBC) folate and vitamin B12 measurements at recruitment (between 9 and 13 gestational weeks) and those with three samples available for glucose measurements under an oral glucose tolerance test. GDM was diagnosed between 24 and 28 weeks’ gestation. Odds ratio (OR) and 95% CI of having GDM was used to quantify the association.

RESULTS
A total of 1,058 pregnant women were included, and GDM occurred in 180 (17.01%). RBC folate and vitamin B12 were significantly higher in pregnancies with GDM than those without GDM (P values were 0.045 and 0.002, respectively) and positively correlated with 1-h and 2-h serum glucose. Daily folic acid supplementation in early pregnancy increases the risk of GDM; OR (95% CI) was 1.73 (1.19–2.53) (P = 0.004). Compared with RBC folate &lt;400 ng/mL, pregnancies with RBC folate ≥600 ng/mL were associated with ∼1.60-fold higher odds of GDM; the adjusted OR (95% CI) was 1.58 (1.03–2.41) (P = 0.033). A significant trend of risk effect on GDM risk across categories of RBC folate was observed (Ptrend = 0.021). Vitamin B12 was significantly associated with GDM risk (OR 1.14 per 100 pg/mL; P = 0.002). No significant association of serum folate and percentile ratio of RBC folate/vitamin B12 with GDM was observed.

CONCLUSIONS
Higher maternal RBC folate and vitamin B12 levels in early pregnancy are significantly associated with GDM risk, while the balance of folate/vitamin B12 is not significantly associated with GDM.