bluuebunny/crossref_metadata_2025_split huggingface dataset:
Numerical Investigation on the Effect of Different Physiological Cancerous Breast Parameters on the Output of Microwave Ablation
Authors: Kumar Jatin , Repaka Ramjee 
Published: February 2020

AbstractMicrowave ablation (MWA) is a newly developed minimally invasive tumor therapy which possesses several advantages over the existing thermal therapies. Despite the several advantages, MWA also suffers same disadvantages similar to other thermal therapies like poor control over ablation volume. Sensitivity of different tissue parameters is the key factor to design a MWA protocol. In this work, sensitivity analysis has been conducted to quantify the effect of three cancerous breast parameters, viz., breast composition, tumor location, and tumor size, on the efficacy of MWA of breast cancer. Ablation volume has been taken as the indicator of the ablation efficacy during MWA procedure. A Taguchi's design of experimental approach has been utilized to optimize the number of simulations required for the analysis and then analysis of variance (ANOVA) has been performed to predict the most sensitive parameter along with their individual contribution. Finite element approach-based simulations have been performed in a multiphysics software. First, a grid-independent study has been established to optimize the number of mesh elements and to reduce the computational cost. Then, after finding the most optimum grid size, all the simulations have been performed in accordance with the protocol obtained from Taguchi's design of experiment approach and finally statistical analysis software has been used for analyzing Taguchi's design. It has been found that, the breast composition to be the most significant factor, with maximum contribution in ablation volume, among three considered factors followed by tumor location and tumor size, respectively.
A Simple Analytical Model for Head Estimation of Noncavitating Inducers With Arbitrary Shape
Authors: Mohr Matthias , Gwiasda Björn , Böhle Martin 
Published: February 2020

Abstract
Although the increase of suction performance is the primary objective when applying inducers to centrifugal pumps and the combined head of inducer and main impeller is finally to be judged, it is helpful for the designer to estimate the head and flow characteristics provided by the inducer alone in the early design stage. With this knowledge, the matching of inducer and pump impeller can possibly be improved and the limiting of operational range that is essentially due to the application of the inducer can be detected in the initial design phase. An already published method (Li, W.-G., 2011, “Head Curve of Noncavitating Inducer,” ASME J. Fluids Eng., 133(2), p. 024501.), which was limited to the application on inducers with cylindrical hub and shroud, is extended to work with arbitrary-shaped inducer geometries. This article discusses the method of performance estimation and its implementation in detail. Four different designs based on common guidelines available in the open literature are analyzed with the help of the method described. The predicted head curves are compared to experimental and computational results obtained as part of an earlier study by the authors. Despite the simplicity of the method, good agreement of the head estimations with the experimental and numerical data can be observed. This indicates that the loss model seems to be applicable not only to cylindrical inducers but also to arbitrary-shaped inducers. Investigations of the exit conditions show that the analytical flow model only roughly represents the simulated flow distribution at the inducer outlet.
Electrical Conductivity and Structural Evolution of Polymer-Derived SiC Ceramics Pyrolyzed From 1200 °C to 1800 °C
Authors: Chowdhury Md Atiqur Rahman , Wang Kewei , Jia Yujun , Xu Chengying 
Published: February 2020

Abstract
Room temperature (RT) electrical conductivity and microstructure of polymer-derived SiC pyrolyzed at temperatures ranging from 1200 °C to 1800 °C were studied. We have shown that both free carbon content and pyrolysis temperature have significant effects on the DC conductivity of polymer derived ceramic (PDC) SiC. The RT DC conductivity of the PDC SiC increased gradually with increasing pyrolysis temperature, and it drastically increases 3 orders of magnitude after 1500 °C. This high electrical conductivity occurs due to the formation of a network of turbostratic carbon (percolative network). Below the percolation regime, hopping enables the electron movement from one carbon cluster site to another. Microstructural investigation with X-ray diffraction (XRD), Raman, and transmission electron microscopy (TEM) analysis showed that the crystal size of SiC increases with increasing pyrolysis temperature, and carbon clusters act as an inhibitor for grain growth at lower pyrolysis temperature. Upon dissociation of clusters, accelerated grain growth occurs and graphitization of carbon occurs along the grains.
Organ Dose Calculations Using ICRP Adult Voxel Phantoms and TRIPOLI-4 Monte Carlo Code
Authors: Lee Yi-Kang 
Published: February 2020

Abstract
The ICRP 110 adult male and female voxel phantoms are the official computational models representing the ICRP (International Commission on Radiological Protection) Reference Male and Reference Female. In 2018, the Working Group 6 (WG6) of European Radiation Dosimetry Group (EURADOS) organized a study on the usage of the ICRP voxel reference phantoms. Organ dose calculation tasks with radiation transport codes were proposed in occupational, environmental, and medical dosimetry. The TRIPOLI-4 Monte Carlo radiation transport code has been widely used in radiation shielding, criticality safety, and reactor physics fields for supporting French nuclear energy research and industrial applications. To enhance the application fields of TRIPOLI-4, the 2018 EURADOS-WG6 tasks are being taken into account by using different features of the TRIPOLI-4 code. In this work, the ICRP reference voxel phantoms were first adapted into TRIPOLI-4. More than 14 × 106 voxels were represented in a mixed lattice geometry including 140 organs-tissues and 52 tissue media. Diverse exposure scenarios were then investigated by using 60Co and 241Am gamma-ray sources, 16N beta source, and 10 keV neutron source. The TRIPOLI-4 standard nuclear data library was utilized on these neutron, photon, electron, and positron-coupled transport calculations. Energy deposition estimators for electron, positron, neutron, and photon coupled with mesh tally options were used to calculate the organ absorbed dose DT and the effective dose E. TRIPOLI-4 calculation methods and primary results for the EURADOS-WG6 voxel phantom exercise on organ dose study tasks are reported here.
Study on Fatigue of Tubing Joint Thread Induced by Vibration in HTHP Ultradeep Wells
Authors: Mou Yisheng , Lian Zhanghua , Lin Tiejun , Zhang Qiang , Liu Yang 
Published: February 2020

Abstract
According to the tubing string failure statistics in the oilfield, fatigue crack of tubing joint thread in high temperature high pressure (HTHP) ultradeep gas wells remains a problem because it can cause tubing strength degradation, tubing fracture failure, well workover, and even well abandonment. In order to obtain a better understanding of tubing thread fatigue and quantify the fatigue life of tubing joint thread in HTHP ultradeep wells, experimental study, elastic–plastic mechanical simulation, and multi-axial fatigue calculation are carried out in this paper. Based on the similarity theory, the vibration mechanical testing device of the tubing string is designed, and the multi-axial load of the tubing joint thread in the actual working condition is obtained. Meanwhile, tubing joint BX1 thread model is established with ansys software, and the stress distribution of tubing joint thread is analyzed on the boundary condition acquired from experiments of vibration test of tubing string. Finally, according to the multi-axial fatigue theory, the fatigue life prediction value of the tubing thread made of Super 13Cr110 and Super 15Cr125 is compared and analyzed. The work presented in this paper can provide theoretical method and technological basis for the study on the frequent failure mechanism of tubing joint thread in HTHP ultradeep gas wells.
The Central Iapetus magmatic province: An updated review and link with the ca. 580 Ma Gaskiers glaciation
Authors: Youbi Nasrrddine , Ernst Richard E. , Söderlund Ulf , Boumehdi Moulay Ahmed , Lahna Abdelhak Ait , Tassinari Colombo Celso Gaeta , Moume Warda El , Bensalah Mohamed Khalil 
Published: February 2020

ABSTRACT
Large igneous provinces and associated silicic magmatism can have a significant global climatic effect, so we explored the relationship between the large igneous province record and the ca. 580 Ma Gaskiers glaciation. The late Ediacaran glaciation exists on at least 14 different paleocontinental blocks, and assuming synchroneity, this Gaskiers glaciation was likely of short duration, with estimates ranging from 1.6 m.y. to 340 k.y. The Central Iapetus magmatic province event found in Laurentia, Baltica, and West Africa consists of multiple pulses in the range 620–520 Ma, with the ca. 580 Ma pulse particularly well developed in North Africa. Based on the age matches of 580–570 Ma Central Iapetus magmatic province pulses and the Gaskiers glaciation, and taking into consideration that there is no robust evidence for a major meteorite impact at the time of the Gaskiers onset, we propose that: (1) the initial silicic ca. 580 Ma pulse of the Ouarzazate event (Anti-Atlas of Morocco) helped to trigger the Gaskiers glaciation, and (2) global warming associated with the subsequent ca. 579–570 Ma continental flood basalts, marking the second stage of the Ouarzazate event, helped to end the ice age.
Amplifying factors leading to the collapse of primary producers during the Chicxulub impact and Deccan Traps eruptions
Authors: Le Hir Guillaume , Fluteau Frédéric , Suchéras-Marx Baptiste , Goddéris Yves 
Published: February 2020

ABSTRACT
The latest Cretaceous (Maastrichtian) through earliest Paleogene (Danian) interval was a time marked by one of the five major mass extinctions in Earth’s history. The synthesis of published data permits the temporal correlation of the Cretaceous-Paleogene boundary crisis with two major geological events: (1) the Chicxulub impact, discovered in the Yucatán Peninsula (Mexico), and (2) eruption of the Deccan Traps large igneous province, located on the west-central Indian plateau. In this study, environmental and biological consequences from the Chicxulub impact and emplacement of the Deccan continental flood basalts were explored using a climate-carbon-biodiversity coupled model called the ECO-GEOCLIM model. The novelty of this study was investigation into the ways in which abiotic factors (temperature, pH, and calcite saturation state) acted on various marine organisms to determine the primary productivity and biodiversity changes in response to a drastic environmental change. Results showed that the combination of Deccan volcanism with a 10-km-diameter impactor would lead to global warming (3.5 °C) caused by rising carbon dioxide (CO2) concentration (+470 ppmv), interrupted by a succession of short-term cooling events, provided by a “shielding effect” due to the formation of sulfate aerosols. The consequences related to these climate changes were the decrease of the surface ocean pH by 0.2 (from 8.0 to 7.8), while the deep ocean pH dropped by 0.4 (from 7.8 to 7.4). Without requiring any additional perturbations, these environmental disturbances led to a drastic decrease of the biomass of calcifying species and their biodiversity by ~80%, while the biodiversity of noncalcifying species was reduced by ~60%. We also suggest that the short-lived acidification caused by the Chicxulub impact, when combined with eruption of the Deccan Traps, may explain the severity of the extinction among pelagic calcifying species.
Spin correlations in parton shower simulations
Authors: Richardson Peter , Webster Stephen 
Published: February 2020

AbstractSpin correlations are an important, but often neglected, effect in modern Monte Carlo event generators. We show that they can be fully incorporated in Herwig7 using the algorithm originally proposed by Collins and Knowles in all stages of the event generation process and between the different stages of the event generation. In this paper we present the final missing ingredient, correlations in both the angular-ordered and dipole shower algorithms and between the parton shower and hard production and decay processes.
Quantum steering for continuous variable in de Sitter space
Authors: Wen Cuihong , Wang Jieci , Jing Jiliang 
Published: February 2020

AbstractWe study the distribution of quantum steerability for continuous variables between two causally disconnected open charts in de Sitter space. It is shown that quantum steerability suffers from “sudden death” in de Sitter space, which is quite different from the behaviors of entanglement and discord because the latter always survives and the former vanishes only in the limit of infinite curvature. It is found that the attainment of maximal steerability asymmetry indicates a transition between unidirectional steerable and bidirectional steerable. Unlike in the flat space, the asymmetry of quantum steerability can be completely destroyed in the limit of infinite curvature for the conformal and massless scalar fields in de Sitter space.
Transformación digital desde un enfoque normativo
Authors: GONZÁLEZ GUTIÉRREZ JUAN PABLO 
Published: February 2020

La preservación digital es un conjunto de tareas, técnicas, métodos y tecnologías que buscan garantizar el acceso a la información en formato digital. Este artículo presenta una aproximación a los conceptos clave relacionados con la preservación digital, los beneficios de su implementación, los principales aspectos tecnológicos asociados, los desafíos y una mirada a la situación actual de la preservación digital en Chile.
Across-Site Differences in the Mechanism of Alcohol-Induced Digestive Tract Carcinogenesis: An Evaluation by Mediation Analysis
Authors: Koyanagi Yuriko N. , Suzuki Etsuji , Imoto Issei , Kasugai Yumiko , Oze Isao , Ugai Tomotaka , Iwase Madoka , Usui Yoshiaki , Kawakatsu Yukino , Sawabe Michi , Hirayama Yutaka , Tanaka Tsutomu , Abe Tetsuya , Ito Seiji , Komori Koji , Hanai Nobuhiro , Tajika Masahiro , Shimizu Yasuhiro , Niwa Yasumasa , Ito Hidemi , Matsuo Keitaro 
Published: February 2020

Abstract

A genetic variant on aldehyde dehydrogenase 2 (ALDH2 rs671, Glu504Lys) contributes to carcinogenesis after alcohol consumption. Somewhat conversely, the ALDH2 Lys allele also confers a protective effect against alcohol-induced carcinogenesis by decreasing alcohol consumption due to acetaldehyde-related adverse effects. Here, we applied a mediation analysis to five case–control studies for head and neck, esophageal, stomach, small intestine, and colorectal cancers, with 4,099 cases and 6,065 controls, and explored the potentially heterogeneous impact of alcohol drinking on digestive tract carcinogenesis by decomposing the total effect of the ALDH2 Lys allele on digestive tract cancer risk into the two opposing effects of the carcinogenic effect (direct effect) and the protective effect (indirect effect mediated by drinking behavior). Alcohol was associated with an increased risk of most digestive tract cancers, but significant direct effects were observed only for upper gastrointestinal tract cancer risk, and varied substantially by site, with ORs (95% confidence interval) of 1.83 (1.43–2.36) for head and neck cancer, 21.15 (9.11–49.12) for esophageal cancer, and 1.65 (1.38–1.96) for stomach cancer. In contrast, a significant protective indirect effect was observed on risk for all cancers, except small intestine cancer. These findings suggest that alcohol is a major risk factor for digestive tract cancers, but its impact as a surrogate for acetaldehyde exposure appears heterogeneous by site. Meanwhile, the behavior-related effect of the ALDH2 Lys allele results in a decreased risk of most digestive tract cancers.

Significance:
These findings support that genetic alcohol avoidance is a factor against alcohol-induced cancers.
Imagem e poder
Authors: Cioccari Deysi , Persichetti Simonetta 
Published: February 2020

Esse artigo analisa a simbologia por trás da imagem do vereador Carlos Bolsonaro (PSC-RJ), filho do presidente Jair Bolsonaro, na posse de seu pai como presidente da República em 1 de janeiro de 2019. O vereador desfilou no rolls-royce numa explicitação do complexo jogo de relações que define seu sentido, muito além da mera imagem do dia da posse. Analisamos a imagem fotográfica do dia da posse em comparação com todas as posses dos presidentes eleitos desde a redemocratização do país, em 1985. Entendemos que o filho do presidente cumpre um papel importante nessa lógica de guerra cultural, típica das redes sociais. Há coisas duras que um presidente não pode dizer. É útil ter quem diga por ele. Assim, o presidente se preserva (ou deveria), adotando tom mais moderado (deveria), como pede o cargo, mas tem um aliado estratégico.Como referencial teórico utilizamos Jacques Rancière e Maria Helena Weber.
Does Yoga Increase Sustainability?
Authors: Weisner Meagan L. , Cameron Mary M. 
Published: February 2020

Abstract
This study aims to increase understanding of whether spiritual dimensions of nature experiences are connected to sustainability by examining the relationship between yoga, sensory awareness, and pro-environmental behavior among comparative groups of yoga and non-yoga practitioners in South Florida. According to affective and perceptual theories of human environmental care, the heightened perception of and attention to one’s natural environment through enhanced sensory awareness that yoga practitioners describe experiencing should engender a closer inclination to nature and its protection, as measured by pro-environmental acts. South Florida yoga practitioners describe increased sensory awareness after yoga, yet they practiced common natural resources protective actions like recycling and reducing fossil fuel use no more frequently than their non-yoga counterparts. Practitioners’ other yoga-based and meditation-enhanced spiritual experiences like non-evaluation and non-attachment to physical and mental phenomena, as well as yoga’s inward self-focus on the physical body, may divert aspirants from proactive environmental behavior.
Correlations between personality traits and roosting behaviours suggest a behavioural syndrome in little brown bats
Authors: Webber Quinn M.R. , Willis Craig K.R. 
Published: February 2020

Abstract
Behavioural syndromes are composed of correlated suites of personality traits and can include traits related to the behaviour and ecology of free-ranging animals. We used captive little brown bats (Myotis lucifugus) to test the hypothesis that behaviours measured in standardized tests reflect personality traits and form behavioural syndromes with roosting behaviours. We predicted: (1) measured behaviours would be repeatable; (2) personality traits and roosting behaviours would form behavioural syndromes; and (3) individuals with similar personality scores would associate more strongly. We observed repeatability for some traits and evidence of behavioural syndromes. Activity was strongly repeatable across time and contexts. More central individuals roosted in larger groups, while individuals with high roost-fidelity roosted in larger groups. Individuals with similar activity scores were also more likely to associate in day roosts, suggesting some behavioural assortment. Our results have implications for how behavioural variation might influence transmission of white-nose syndrome.
Perioperative predictors of prolonged length of hospital stay following total knee arthroplasty: a retrospective study from a single center in China
Authors: Song Xiaoxiao , Xia Caiwei , Li Qiangqiang , Yao Chen , Yao Yao , Chen Dongyang , Jiang Qing 
Published: February 2020

Abstract
Background
Decreasing the length of hospital stay is an ideal course of action to appropriately allocate medical resources. The aim of this retrospective study was to identify perioperative factors that may decrease the length of hospital stay (LOS).

Methods
In this study, we collected the data on 1112 patients who underwent primary total knee arthroplasty surgery (TKAs) at our institution from Jan 1, 2011 to Nov 31, 2017. Based on the published literature, 16 potential factors (12 preoperative variables, 1 intraoperative variable, and 3 postoperative variables) were investigated. The patients requiring a hospital stay longer than the mean LOS (8 days) were defined as patients with a prolonged LOS. The factors with a P value less than 0.1 in the univariate analysis were further analysed in a multivariate model. An ordinal regression was used to determine independent risk factors for a prolonged LOS.

Results
The mean LOS was 8.3 days (±4.3), with a range of 2 to 30 days. Sixteen variables were analysed by univariate analysis, and 11 of them had p < 0.1 and were included in the multivariable model. Finally, 9 factors were found to be associated with a prolonged LOS. Among the 9 variables, 2 were surgery-related factors (operative time and intraoperative blood loss), and 3 were patient-related factors (age, ASA classification and neurological comorbidities).

Conclusion
In this study, we found that the clinical protocol, complications, the patient’s age, the ASA classification, neurological comorbidities, the operative time, the ward, intraoperative blood loss and the surgeon were all factors contributing to a prolonged LOS. In clinical practice, these factors provide important information for the surgeon and are useful for identifying patients with a high risk of a prolonged LOS.