bluuebunny/crossref_metadata_2025_split huggingface dataset:
Patient sexual orientation and gender identity disclosure
Authors: Jamieson Abigail , Cross Harry , Arthur Sophie , Nambiar Kate , Llewellyn Carrie D 
Published: June 2020

SUMMARYBackgroundIn the UK, 2.3% of men and 1.6% of women identify as lesbian, gay or bisexual (LGB). Of the UK population, 1% are estimated to identify as transgender (T). Of the LGB population, 46% do not disclose their sexual orientation to health care professionals (HCPs) and 18% of transgender patients avoid health care altogether. Non‐disclosure of sexual orientation and/or gender identity contributes to worse health outcomes for LGBT patients.ObjectivesThis study aimed to explore medical students’ perceptions of the barriers to health care for LGBT patients and the importance of patient disclosure of sexual orientation or gender identity.MethodsFocus groups included medical students across five year‐groups from a medical school in the South East of England. Discussions followed a pre‐approved topic guide with a primary and co‐facilitator present. Focus groups were audio‐recorded, transcribed verbatim and the data underwent framework analysis.ResultsForty‐five undergraduate medical students participated (40% of whom were non‐heterosexual). Most participants believed that the incorrect use of pronouns and discrimination would be a cause for non‐disclosure of gender identity and sexual orientation to HCPs. Several participants thought it was more important to know a patient's gender identity than sexual orientation. Many participants felt that collecting sexual orientation information on healthcare registration forms is acceptable.DiscussionMore education regarding LGBT health needs and ways to encourage patient disclosure of sexual orientation or gender identity should be included in the undergraduate medical school curricula to increase the competency of future doctors when interacting with LGBT patients.
Eosinophilic gastroenteritis and graft‐versus‐host disease induced by transmission of Norovirus with fecal microbiota transplant
Authors: Bilinski Jaroslaw , Lis Karol , Tomaszewska Agnieszka , Pechcinska Aleksandra , Grzesiowski Pawel , Dzieciatkowski Tomasz , Walesiak Alicja , Gierej Beata , Ziarkiewicz‐Wróblewska Bogna , Tyszka Martyna , Kacprzyk Piotr , Chmielewska Lidia , Waszczuk‐Gajda Anna , Wiktor‐Jedrzejczak Wieslaw , Basak Grzegorz W. 
Published: June 2020

AbstractFecal microbiota transplantation (FMT) was performed to decolonize gastrointestinal tract from antibiotic‐resistant bacteria before allogeneic hematopoietic cells transplantation (alloHCT). AlloHCT was complicated by norovirus gastroenteritis, acute graft‐versus‐host disease, and eosinophilic pancolitis. Norovirus was identified in samples from FMT material. Symptoms resolved after steroids course and second norovirus‐free FMT from another donor.
Enhanced photosynthetic activity in pak choi hybrids is associated with increased grana thylakoids in chloroplasts
Authors: Liu Tongkun , Duan Weike , Chen Zhongwen , Yuan Jingping , Xiao Dong , Hou Xilin , Li Ying 
Published: June 2020

SummaryIncreased photosynthetic activity is closely linked to heterosis in plants, but the underlying molecular mechanisms remain elusive. Pak choi (Brassica rapa ssp. chinensis) is a widely grown vegetable in Asia, and the most commercial cultivars are F1 hybrids. Here, the inbred pak choi lines WTC and 2Q, and their reciprocal F1 hybrids WQ and QW, were used to characterize the increased photosynthetic activity in these hybrids at the physiological, cellular and molecular levels. We found that the hybrids had larger leaves, with more grana thylakoids. Additionally, these hybrids had significantly increased net photosynthetic rates (Pn) under both saturating and low irradiance conditions. These data indicate that the increased photosynthetic activity in pak choi hybrids was associated with an improved photosynthetic mechanism and larger leaves. Next, we obtained genome‐wide data using transcriptome and bisulfite sequencing. Gene ontology (GO) analysis showed that the differentially expressed genes among the parents and hybrids were mostly enriched in the ‘photosynthesis’, ‘thylakoid’, and ‘chloroplast’ categories, indicating that the increased number of grana thylakoids contributes to the enhanced photosynthetic capacity in hybrids. Furthermore, we found that the increased number of grana thylakoids was associated with the upregulation of light‐harvesting complex of photosystem II 1 (BrLhcb1). Yeast one‐hybrid and transient assay showed that the BrLhcb1 promoter was directly bound by CIRCADIAN CLOCK ASSOCIATED 1 (BrCCA1), resulting in increased BrLhcb1 expression and enhanced carbon fixation in hybrids. Finally, our findings provide new insight into molecular mechanisms underlying enhanced photosynthesis in pak choi hybrids.
Long and short‐term assessment of surface area changes in saline and freshwater lakes via remote sensing
Authors: Yagmur Nur , Bilgilioglu Burhan Baha , Dervisoglu Adalet , Musaoglu Nebiye , Tanik Aysegul 
Published: June 2020

AbstractAdvances in remote sensing technology enable monitoring and detection of these vulnerable water bodies that bear numerous functions and ecological services beyond their intended use. As such, valuable data and information may be provided for long and short‐term analyses and stored in a database for future projections. This paper initially grouped 18 natural lakes of the Konya Closed Basin of Turkey according to their salinity level. Freshwater, saline and brackish lakes have then undergone temporal analysis for every 5‐year intervals via Landsat satellite images. Freshwater lake surfaces have not changed noticeably during the inspection period; however, saline waters have decreased in surface area by 32%. Beysehir Lake constituting 94% of the freshwater category and Tuz Lake representing 97% of the saline group were selected for the short‐term analysis that was monthly conducted for years 2017 and 2018 with optical and SAR images to better verify cause and effect relationship.
High Strain Rate Mechanical Properties of SAC-Q With Sustained Elevated Temperature Storage at 100 °C
Authors: Lall Pradeep , Mehta Vishal , Suhling Jeff , Locker David 
Published: June 2020

Abstract
Leadfree electronics in harsh environments often may be exposed to elevated temperature for the duration of storage, transport, and usage in addition to high strain rate triggering loads during drop-impact, vibration, and shock. These electronic components may get exposed to high strain rates of 1 to 100 s−1 and operating temperatures up to 200 °C in critical surroundings. Doped SAC solder alloys such as SAC-Q are being considered for use in fine-pitch electronic components. SAC-Q consists of Sn-Ag-Cu alloy in addition to Bi (SAC+Bi). Prior data presented to date for lead-free solders, such as SAC-Q alloy, at high aging temperature and high strain rate are for 50 °C sustained exposure. In this paper, the effect of sustained exposure to temperature of 100 °C on high strain rate properties of SAC-Q is studied. Thermally aged SAC-Q samples at 100 °C have been tested at a range of strain rates including 10, 35, 50, and 75 s−1 and operating temperatures ranging from 25 °C up to 200 °C. Stress–strain curves are established for the given range of strain rates and operating temperatures. Also, the computed experimental results and data have been fitted to the Anand viscoplasticity model for SAC-Q for comparison.
Wind Energy Potential in Jordan: Analysis of the First Large-Scale Wind Farm and Techno-Economic Assessment of Potential Farms
Authors: Kiwan Suhil , Al-Gharibeh Elyasa , Abu-Lihia Emad 
Published: June 2020

Abstract
We research the investment potential of wind energy in Jordan. The capacity factor of the first large-scale wind farm in the country, Tafila Wind Farm, was found to be 33.1%, based on actual energy production during its first year of operation. The best performing turbine in the farm achieved a capacity factor of 39.1%. Other eight sites, which are expected to have such capacity factors were subjected to techno-economic investigation utilizing 52 different turbine models of nameplate capacities range from 1.0 to 5.0 MW. A capacity factor higher than 25.0% can be achieved at all the studied sites. The average levelized cost of electricity of the 52 turbines at the eight sites is 0.0708 $/kWh, and the cost ranges from 0.0452 to 0.1108 $/kWh. A proposed 80 MW farm at every location results in a total capacity of 640 MW and an annual estimated energy generation of 1545.0–2076.0 GWh, around 7.0–9.0% of the country's projected electricity demand in 2020.
Contact Yield Initiation and Its Influence on Rolling Contact Fatigue of Case-Hardened Steels
Authors: Li Donglong , Zhang Mengqi , Xie Lechun , Wang Zhanjiang , Zhou Zhongrong , Zhao Ning , Palmer David , Jane Wang Q. 
Published: June 2020

AbstractStress distributions and plastic deformation zones are factors directly influencing the fatigue life of components under cyclic contact. An effective approach to improving the resistance of a steel to contact fatigue failure is surface hardening, which builds gradient yield strength from the surface of the steel to the bulk. When using the distortion energy theory as the criterion to identify failure initiation for a case-hardened steel, contact yield starts in the subsurface wherever the von Mises stress reaches the local material strength, rather than at the point of the maximum von Mises stress in the subsurface. If the yield strength changes from the surface to the bulk following a straight line, the location of yield initiation should occur at the tangency of the strength line and the von Mises stress curve. Analyses on circular, rectangular, and elliptical contacts are presented to reveal the locations of contact yield initiation for such case-hardened steels subjected to rolling contact stresses, for which the influence of friction can be ignored. A group of formulas relating contact yield initiation, in terms of the critical pressure, location of the first yield, and plasticity index (transition to plasticity) to case-hardening parameters, such as the case slope, the minimum case depth, and surface and bulk strengths, are derived to facilitate contact element designs using case-hardened materials. The results are applied to examine the rolling contact behaviors of several case-hardened steels, and the data correlation suggests that their rolling contact fatigue lives are related to a nondimensional case-hardening slope besides external loading.
Experimental Investigation on the Effects of Swirlers Configurations and Air Inlet Partitioning in a Partially Premixed Double High Swirl Gas Turbine Model Combustor
Authors: Mardani Amir , Asadi Rekabdarkolaei Benyamin , Rezapour Rastaaghi Hamed 
Published: June 2020

Abstract
In this work, a double-high swirl gas turbine model combustor (GTMC) has been experimentally investigated to identify the effects of air partitioning and swirlers geometry on combustion characteristics in terms of flame stability, exhaust gas temperature, NOx generation, and combustion efficiency. This high swirl model combustor is originally developed in the German Aerospace Center (DLR) and known as GTMC and recently reconstructed at Sharif University's Combustion Laboratory (named as SGTMC). Here, SGTMC run for liquefied petroleum gas (LPG) fuel and air oxidizer at room temperature and atmospheric pressure. Eleven different burner geometries, M1–M11, are considered for the aims of this work. Furthermore, the effects of burner confinement are also investigated. The results show that under the confined state, the flame has a lower width and height than the unconfined one. Exchanging the swirlers of annular and central air inlets shows a more stable and lifted V type flame with almost zero levels of CO and CH4. In addition, measurement showed that the annular swirler removing leads to incomplete combustion. Moreover, an increment in discharged air velocity leads to more completed combustion and less pollutant exhaust gas but the attachment of flame to the burner hub. Strengthening the flow channeling is not reasonable in terms of emission aspects. Moreover, burner configuring to counterrotating swirlers leads to a more stable flame but with lower combustion efficiency. Among 11 test cases, the original configuration and the case of exchanging the swirlers of annular and central air inlets are the best choices in terms of combustion efficiency and stability. Measurements show the improvement of burner stability, 2–10%, due to inlet air preheating.
A Combined Wavelet Transform and Recurrent Neural Networks Scheme for Identification of Hydrocarbon Reservoir Systems From Well Testing Signals
Authors: Moghimihanjani Mehrafarin , Vaferi Behzad 
Published: June 2020

AbstractOil and gas are likely the most important sources for producing heat and energy in both domestic and industrial applications. Hydrocarbon reservoirs that contain these fuels are required to be characterized to exploit the maximum amount of their fluids. Well testing analysis is a valuable tool for the characterization of hydrocarbon reservoirs. Handling and analysis of long-term and noise-contaminated well testing signals using the traditional methods is a challenging task. Therefore, in this study, a novel paradigm that combines wavelet transform (WT) and recurrent neural networks (RNN) is proposed for analyzing the long-term well testing signals. The WT not only reduces the dimension of the pressure derivative (PD) signals during feature extraction but it efficiently removes noisy data. The RNN identifies reservoir type and its boundary condition from the extracted features by WT. Results confirmed that the five-level decomposition of the PD signals by the Bior 1.1 filter provides the best features for classification. A two-layer RNN model with nine hidden neurons correctly detects 3202 out of 3298 hydrocarbon reservoir systems. Performance of the proposed approach is checked using smooth, noisy, and real field well testing signals. Moreover, a comparison is done among predictive accuracy of WT-RNN, traditional RNN, conventional multilayer perceptron (MLP) neural networks, and couple WT-MLP approaches. The results confirm that the coupled WT-RNN paradigm is superior to the other considered smart machines.
Analytical and Experimental Investigation of Perforation Layout Parameters on Hydraulic Fracture Propagation
Authors: Zuo Shaojie , Ge Zhaolong , Lu Yiyu , Cao Shirong , Zhang Liang 
Published: June 2020

Abstract
Horizontal wellbore fracturing technology is an effective method to stimulate reservoirs and increase energy production, such as gas, oil, and geothermy. The perforation layout parameters are the key parameters affecting the fracturing effect. To analyze the influence of perforation layout parameters on hydraulic fracture propagation and optimization of the perforation layout parameters, the stress surrounding the perforation is derived, key oriented points and effective oriented angles are defined, and effective oriented criteria are proposed. The principal stress direction angle can be divided into three stages as the distance from the fracturing hole increases: decreasing stage (tends to the connection direction of perforations), stable stage, and increasing stage (tends to the maximum horizontal ground stress direction). A common relationship between the perforation length, the initial angle, the ground stress difference, and the suitable oriented angle is obtained. The results will guide the field application of the above fracturing technologies.
A Semi-Analytical Fractal-Fractional Mathematical Model for Multi-Fractured Horizontal Wells in Coalbed Methane Reservoirs
Authors: Jiang Ruizhong , Liu Xiuwei , Wang Xing , Wang Qiong , Cui Yongzheng , Zhang Chunguang 
Published: June 2020

Abstract
Coalbed methane (CBM) which is clean energy has received great emphasis recently, and the multi-fracturing technology is widely applied in the exploitation of CBM. Due to the complexity, the randomness, and the anisotropism of the porous medium and the anomalous diffusion process, the fractal theory and fractional calculus are utilized to establish a semi-analytical fractal-fractional mathematical model considering the stress sensitivity of the cleat system for multi-fractured horizontal wells in CBM reservoirs. Through line-sink theory, Pedrosa transformation, perturbation theory, Laplace transformation, element discretization, superposition principle, and Stehfest numerical inversion, the pressure-transient analysis curves are plotted in the double logarithmic coordinates. By comparing with the existing model, the validation of the proposed model is illustrated. Also, nine flowing stages are identified according to different characteristics. Then, sensitivity analysis is conducted and influence laws are summarized. At last, a field application is introduced to furtherly verify the reliability of the proposed model. The relevant results analysis can provide some new significant guidance for interpreting the field data more precisely.
Experimental Study on the Influence of Film Cooling Hole Extraction on Heat Transfer and Flow Field in Internal Ribbed Cooling Channels of Turbine Blades
Authors: Böttger Marlene , Lange Martin , Mailach Ronald , Vogeler Konrad 
Published: June 2020

Abstract
Film cooling and internal passage cooling play a fundamental role in turbine blade cooling. As the cooling holes are fed by the internal crossflow, interaction of these both cooling strategies is implicated. The influence of film hole extraction on the internal flow field and heat transfer of a ribbed cooling channel is investigated in this study. Therefore, a rectangular cooling channel (AR = 2:1) is equipped with parallel ribs of four different geometries (90 deg ribs, 60 deg ribs, 60 deg V-shaped ribs, and 60 deg Λ-shaped ribs) and also with bleed holes at varying positions between the ribs. The different geometrical configurations are examined using 2D-particle image velocimetry (PIV) for flow measurements and transient thermochromic liquid crystal (TLC) technique for heat transfer measurements. Depending on the rib-induced heat transfer pattern, cooling hole positions in the rib segments are found, which can enhance passage internal heat transfer. 90 deg and 60 deg ribs show the best results for upstream hole positions regardless of the lateral positioning. V and Λ ribs reveal a benefit for lateral positioned cooling holes near the upstream rib.
Antenatal care booking within the first trimester of pregnancy and its associated factors among pregnant women residing in an urban area: a cross-sectional study in Debre Berhan town, Ethiopia
Authors: Kolola Tufa , Morka Wogene , Abdissa Bayisa 
Published: June 2020

ObjectiveThis study aimed to assess antenatal care (ANC) booking within the first trimester of pregnancy and its associated factors among urban dwellers of pregnant women in Debre Berhan town, Ethiopia.DesignCross-sectional.SettingPublic and private health facilities that provide ANC services in Debre Berhan town.Outcome measureFirst ANC booking within the first trimester of pregnancy.ParticipantsUrban dwellers of pregnant women in Debre Berhan town (n=384).ResultsA total of 387 pregnant women in Debre Berhan town were selected for this study, of which 384 responded giving a response rate of 99.2%. The proportion of pregnant women who had ANC booking within the first trimester of pregnancy was 156 (40.6%; 95% CI: 35.8% to 45.6%). In the multivariable analysis, the odds of first ANC booking within the first trimester was higher among pregnant women who had secondary school (adjusted OR (AOR): 1.84; 95% CI: 1.10 to 3.19) and more than secondary level of education (AOR: 2.26; 95% CI: 1.27 to 4.03) compared with those who had less than a secondary school level of education. Pregnant women who have any ill health with their current pregnancy (AOR: 1.99; 95% CI: 1.21 to 3.27) were more likely to start booking within the first trimester than their counterparts. The odds of ANC booking within the first trimester was threefold higher among women with knowledge of ANC (AOR: 3.05; 95% CI: 1.52 to 6.11) compared with their counterparts.ConclusionFirst ANC booking within the first trimester was found to be low among urban dwellers of Debre Berhan town. Secondary school and more educational level, having ill health during early pregnancy and women’s knowledge about ANC services were statistically associated with ANC booking within the first trimester of pregnancy. Therefore, improving ANC booking according to the WHO recommendation requires due attention. Further qualitative research exploring why early ANC booking remains low among urban dwellers is important to design intervention modalities.
Safety of tranexamic acid in thrombotic adverse events and seizure in patients with haemorrhage: a protocol for a systematic review and meta-analysis
Authors: Murao Shuhei , Nakata Hidekazu , Yamakawa Kazuma 
Published: June 2020

IntroductionTranexamic acid (TXA) is a synthetic derivative of the amino acid lysine that inhibits fibrinolysis by blocking lysine-binding sites on plasminogen, which contribute to reduced bleeding, the need for transfusion and mortality. Although there is reliable evidence of the efficacy of TXA, its effects on other important outcomes, adverse events, including thrombotic events and seizure, remain uncertain.Methods and analysisWe will conduct a systematic review and meta-analysis of randomised controlled trials with the objective of evaluating the incidence of thrombotic adverse events and seizure and how the effect of TXA varies by dose and underlying disease. We will include patients with bleeding in any underlying disease. We will search MEDLINE, EMBASE and Cochrane Central Register of Controlled Trials for randomised controlled trials. The planned date of our systematic search is 1 June 2020. We will follow the recommendations of the Cochrane Collaboration and the Preferred Reporting Items for Systematic Review and Meta-Analysis statement. Subgroup and sensitivity analyses will be performed to explore residual heterogeneity and inconsistency. Meta-regression analysis will be carried out to investigate the association between the incidence of adverse events and the TXA dose. The risk of systematic errors (bias) and random errors will be assessed and the overall quality of evidence will be evaluated using the Grading of Recommendations Assessment, Development and Evaluation approach.Ethics and disseminationThis study will not involve primary data collection, and formal ethics approval will therefore not be required. We aim to publish this systematic review in a peer-review journal.Trial registration numberUMIN000039611.