bluuebunny/crossref_metadata_2025_split huggingface dataset:
Thermal-mechanical coupling analysis of functionally graded cylindrical shells
Authors: Feng Xiayao , Liu Wenguang , Liu Chao 
Published: August 2019

Abstract
Functionally graded materials is a new material for thermal protection in the aerospace field. It is extremely important to study the temperature and stress changes in the thermal environment to ensure the normal operation of the spacecraft and the safety of crews. In this paper, ABAQUS is used to perform sequential thermal coupling and full thermal coupling analysis. The temperature variation and mechanical properties of functionally graded cylindrical shells in thermal environment under temperature and force field and temperature field interacts with force field are studied. Based on the first law of thermoelasticity and thermodynamics, the three-dimensional stress and energy equations of functionally graded cylindrical shells in thermal environment are derived. The example shows that the temperature variation law and mechanical characteristics of the two types of thermo-mechanical coupling analysis are almost the same. The temperature value results of the sequential thermal-mechanical coupling analysis are the same as the results of the full thermal coupling, but the stress value results are lower than the results of the full thermal coupling.
Steady-state temperature field of stator bar of double water internal cooling synchronous condenser
Authors: Sun Fuchun , Wang Andong , Ji Gang , Li Junqing , Yong Jun , Wang Jihao 
Published: August 2019

Abstract
Synchronous condenser is a key part of ensuring stable operation of the extra-high voltage AC and DC transmission grid. In order to optimize and ensure the reliable operation of the synchronous condenser cooling system, it is necessary to master the temperature distribution in the synchronous condenser. In the double water internal cooling synchronous condenser, the fluid flow and heat transfer are quite complicated in the water-cooling system of the stator and the rotor. In this paper, the steady-state temperature field of stator coil of TTS-300-2 300MVar double water internal cooling synchronous condenser is calculated by using the finite volume method. The influence of empirical parameters on the calculation results is reduced. The calculation results show that the water temperature and copper temperature increase linearly along the direction of water flow.
Effect of roundness and coaxiality error on the lubrication performance of ICE main bearings
Authors: Ren Peirong , Zuo Zhengxing , Cheng Ying , Jing Guoxi 
Published: August 2019

Abstract
Nowadays, with higher power density trend and lightweight design requirements in internal combustion engine, more factors are considered in bearing lubrication analysis to improve the lubrication performance and to decrease the risk of failure. The effect of roundness and coaxiality on the lubrication performance of a V-type diesel engine main bearings were investigated systematically and comprehensively using numerical simulation method based on elasto-hydrodynamic lubrication theory. The average flow model, the asperity contact theory and the multi-body dynamics based on component mode synthesis were used to improve simulation accuracy and efficiency. The results showed that out-of-roundness has an apparent negative effect on the lubrication performance of main bearings and the out-of-roundness wave height and the wave number should not exceed 2μm and 10 respectively. In addition, the lubrication performance increased slightly when the bearing house coaxiality tilt angle is the same as the journal load bending direction. The study has some guiding significance for improving the lubrication performance and tolerance requirements design of main bearings.
Research on Tool Wear Monitoring and Turning Simulation
Authors: Wei Liao 
Published: August 2019

Abstract
The condition of cutting tool has a direct effect on processing quality, productivity and produce cost. So, it is very important to monitor tool condition in cutting process. The on line monitoring of tool wear is an important topic in the research of flexible manufacturing system. Cutting force is one of the important physical parameters in cutting process, which affects tool wear and machined surface quality. The correlation between cutting force and tool wear is experimentally analyzed. It is proposed that the change of tool cutting force is consistent with the change of wear. The simulation study of turning processing based on finite element analysis software Deform 3D. The size distribution of cutting force was simulated, the simulation results and the test results were compared and analyzed, which provided guiding significance for the determination of process parameters.
Research on consistency check of natural storage and enhancement test for missile servo system
Authors: Wang Xu , Sun Quan 
Published: August 2019

Abstract
In order to check the consistency of two mechanisms for a missile servo system, we conduct two enhancement tests and utilize two sets of test data to establish the accelerated degradation models of the servo system. Based on the above accelerated degradation models and natural storage profile of the servo system, we present and demonstrate a procedure to check the consistency of two mechanisms by checking the correlation of two sets of degradation data. The results indicate that two degradation mechanisms are significantly consistent with each other.
Effects of the off-axis layer on the tensile failure of carbon fiber reinforced polymer [0/θ]ns laminates
Authors: Deng Xi , Wang Wen-Xue , Matsubara Terutake 
Published: August 2019

Abstract
Off-axis plies have a great influence on the tensile failure stress of carbon fiber reinforced polymer (CFRP) multidirectional laminate. Matrix cracks in the off-axis plies will cause negative effect on the layers, leading to fatal failure of the laminate. A microscale cohesive zone model is proposed to explore the influence of matrix cracks in the off-axis plies on the tensile failure of [0/θ]ns laminates. Simulations of tensile failure of [0/θ]s laminate were performed by varying the off-axis ply angle θ ranging from 15° to 90° and the cohesive properties to investigate the effects of off-axis plies to the failure of the laminates. Tensile tests of [0/θ]2s laminates with various off-axis ply angles were conducted to validate the simulations of microscale model. The simulation results with matrix cracking are in high agreement with the experimental results, illustrating the influence of off-axis plies on the tensile failure of [0/θ]ns laminates.
Effect of Nanometer Antimony Trioxide on Properties of Flame Retardant Polypropylene Matrix Composites
Authors: Xu J L , Lin Y G , Yang W L , Niu L , Kang C H 
Published: August 2019

Abstract
Using antimony trioxide nanoparticles (nano-Sb2O3), montmorillonite (MMT) and brominated polystyrene (BPS) as additive and using polypropylene (PP) as matrix material, a novel nano-Sb2O3/MMT/BPS-PP flame retardant composite was synthesized via mechanical ball milling dispersion and melt blending method and characterized by X-ray diffraction, scanning electron microscopy, differential scanning calorimeter and tensile properties testing. The flame retardant performance of the composite was investigated by limiting oxygen index and vertical burning test (UL-94). The results show that the mechanical properties and flame retardant properties of the composites are improved compared to that of pure PP when PP matrix retardant composites are added with different mass fraction of nano-Sb2O3. When the mass fraction of nano-Sb2O3 is 3wt%, the PP matrix composite exhibits excellent tensile strength and crystallization properties. When the mass fraction of nano-Sb2O3 is more than 3wt%, the PP matrix composite exhibits excellent flame retardancy.
Synthesis of oxygen-deficient and monodispersed Pr doped CeO2 nanocubes with enhanced resistive switching properties
Authors: Chen Nan , Li Sean 
Published: August 2019

Abstract
Monodispersed praseodymium (Pr) doped cerium oxide (CeO2) nanocubes (∼ 10 nm) were successfully synthesized via a facile two-phase solvothermal method and further assembled into a dense film through a drop-coating procedure for resistive switching applications. The XRD and Raman results showed that Pr element was successfully doped into the CeO2 lattice structure while maintaining the highly uniform nano-cubic structure. In addition, the concentration of oxygen vacancy in CeO2 nanocubes could be effectively modulated by varying dopant concentration evidenced by XPS and Raman analysis. The two-terminal structured device of Au/Pr doped CeO2/fluorine-doped tin oxide (FTO) exhibits stable resistive switching behaviour and ON/OFF endurance for more than 1000 cycles at a small operational voltage ranging from -0.6 to 1V. The present study may extend the potential of using praseodymium (Pr) doped cerium oxide nanocube in nanoscale building block for novelty 3D architectural memory and logic design in data-dependent applications such as artificial intelligence (AI) system and machine learning.
Red Shift in Optical Properties of Type-I Al0.45Ga0.55As/GaAs0.84P0.16/Al0.45Ga0.55As Nano-heterostructure under External Strain
Authors: Rathi Amit , Singh Amit Kumar , Riyaj Md. , Dalela S. , Alvi P. A. 
Published: August 2019

Abstract
The application of external pressure on a heterostructure produces changes in the lattice parameter and symmetry of the material. These in turn produce significant changes in the electronic bandstructure. Due to the application of external pressure energy gaps are altered. This paper reports the energy bandstructure, wavefunctions and optical gain in type-In-Al0.45 Ga0.55 As/GaAs0.84P0.16 / p-Al0.45 Ga0.55 As nano-heterostructures under uniaxial strain (-1 to +1 GPa) along [110] directions in the red visible region. Numerical calculations of the photonic energy and optical gain of TE and TM modes in GaAsP/AlGaAs laser diode structure have been carried out for various uniaxial strain at temperature 300 K. The band structure was calculated using 6×6 Luttinger-Kohn Hamiltonian to determine sub-band dispersion and corresponding wavefunctions. The Heterostructure is observed to operate in the energy range 1.62 to 1.78 eV (696 to 765 nm).
Research on Key Patent Licensing Strategy of 3D Printing Technology
Authors: Wang Qiang , Liu Haiying , Wu Ping , Cao Yu , Xu Bo 
Published: August 2019

Abstract
Patent licensing is one of the most important means to gain profits from the commercial application of patents. Based on the analysis of the market sales price, volume and profit of key patented 3D printing technology products, the profit of patentee under the mode of exclusive licensing, sole licensing and general licensing is studied in order to provide reference for formulating the best licensing strategy for key patents of 3D printing technology and speed up the application of patents.
Prediction of critical heat flux on surface under boiling in case of IVR-ERVC by using CFD simulation
Authors: Urfa Rasool , Lu Daogang , Asran Noor Farooq , Munib Ansari , Aazim Rasool 
Published: August 2019

Abstract
The efficacy of in-vessel through external reactor vessel cooling (IVR-ERVC) is strongly correlated with the critical heat flux (CHF) on the lower head of reactor pressure vessel (RPV). The high limit of CHF prevents the RPV from failure by extracting much heat out of the vessel through the circulation of working fluid in external flow channel. In present study, the deionized water is allowed to flow through curved flow channel having radius of curvature of 368mm and hydraulic diameter of 40mm with square cross-section. The heat flux of 1500kWm−2 is applied perpendicular to the convex wall of the channel. The CHF on the wall of flow channel has been predicted by incorporating CFD based two-phase (liquid-vapor) boiling model. The investigations on spatial variation of pressure, temperature, and velocity and heat flux acquired as a result of numerical simulations have been discussed in detail. The CHF and average HTC is predicted as 1.798e+04kWm−2 and 38.981kWm−2K−1 respectively.
Numerical study of natural convection in a rectangular cavity with variation of cavity aspect ratios and cavity inclination angles
Authors: Prasopchingchana U 
Published: August 2019

Abstract
Effects of cavity aspect ratios and cavity inclination angles to natural convection in a rectangular cavity are numerically investigated. Investigation is performed at the Rayleigh number (Ra) equal to 104, the cavity aspect ratios from 1 to 50 and the cavity inclination angles from 0 to 180°. Consequently, Heat transfer enhancement or decreasing due to the effects is exposed. In addition, streamline contours in the rectangular cavity are illustrated. Multi-cellular flow figuring on the appropriate conditions is exhibited. A new correlation of the average Nusselt number, the cavity aspect ratio and the cavity inclination angle is formulated at Ra equal to 104.
G3viz: an R package to interactively visualize genetic mutation data using a lollipop-diagram
Authors: Guo Xin , Zhang Bo , Zeng Wenqi , Zhao Shuting , Ge Dongliang 
Published: August 2019

Abstract

Summary
The lollipop-diagram is one of the widely used graphical representations to visualize and explore translational effects of genetic mutations in cancer genomics. However, an easy-to-use lollipop-diagram tool with full functionality is still lacking. Here, we introduce g3viz, an R package that enables researchers to explore genetic mutation data using a lollipop-diagram in a web browser. With a few lines of R code, users can interactively visualize data details, annotate findings and export resultant diagrams in high-quality figures. Because of usefulness and usability, g3viz can be generally exploited by researchers with different levels of bioinformatics skills and programming experience.

Availability and implementation
The R package is freely available under the MIT license from CRAN (http://cran.r-project.org/web/packages/g3viz). The g3lollipop JavaScript package is freely available under MIT license at GitHub (https://github.com/g3viz/g3lollipop.js).

Supplementary information
Supplementary data are available at Bioinformatics online.
Listening to our Global Partners: Kenyans’ perceptions of international volunteers
Authors: Dickey Jennifer Smyer , Wasike Rosemary , Singletary Jon , Sayers Megan Levers 
Published: August 2019

Abstract
Although international volunteerism is a common service practice among Americans and Europeans, research exploring host community members’ perceptions of volunteers and their practice is lacking. In this phenomenological study, thirteen in-depth interviews were conducted with Kenyan participants and their perceptions of international volunteers’ attitudes and behaviors were explored. While positive themes of skill transfer and honoring cultural practices emerged, so did negative themes that suggested international volunteers had demeaning perceptions of Kenyans, controlled collaborative projects, and gave Kenyans cursory roles to play. The study also suggests that international volunteers departed from service hastily without empowering Kenyans, which led to project failure. Recommendations for strengthening international volunteer practice are identified and described.
A journey from microenvironment to macroenvironment: the role of metaflammation and epigenetic changes in cardiorenal disease
Authors: Kanbay Mehmet , Yerlikaya Aslihan , Sag Alan A , Ortiz Alberto , Kuwabara Masanari , Covic Adrian , Wiecek Andrzej , Stenvinkel Peter , Afsar Baris 
Published: August 2019

AbstractChronic non-communicable diseases have become a pandemic public problem in the 21st century, causing enormous burden on the economy, health and quality of life of societies. The role of a chronic inflammatory state in the pathogenesis of chronic disease has been more comprehensively recognized by recent findings. The new paradigm ‘metaflammation’ focuses on metabolism-induced (high fat or fructose-based diet or excessive calorie intake) chronic inflammation. There is a close correlation between the increased incidence of chronic kidney disease (CKD) and chronic heart failure with both increased inflammatory marker levels and western-type diet. In this review we describe the concept of metaflammation, its role in the development of CKD and chronic heart disease, the molecular and signalling pathways involved and the therapeutic consequences.
Clinicopathological and Molecular Characterisation of Crohn’s Disease-associated Small Bowel Adenocarcinomas
Authors: Liao Xiaoyan , Li Guangyuan , McBride Russel , Houldsworth Jane , Harpaz Noam , Polydorides Alexandros D 
Published: August 2019

Abstract

Background and Aims
Small bowel adenocarcinoma [SBA] is a recognised complication of Crohn’s disease [CD], but its low absolute prevalence limits opportunities for clinicopathological characterisation.

Methods
We compared the clinical, pathological, and molecular features of 48 SBA from patients with CD [CDSBA] and 29 SBAs from patients without CD [NSBA] who underwent treatment at our tertiary care centre between 2000 and 2018.

Results
Patients with CDSBA were younger than those with NSBA [mean age, 56 vs 64; p = 0.02]. Males predominated in both groups. Most CDSBA [69%] occurred in the ileum, whereas most NSBA occurred in the duodenum [38%] and jejunum [31%; p &lt; 0.001]. Stage I tumours were more prevalent in the CDSBA [33% vs 3%; p = 0.002], although the rates of Stage IV disease and disease-specific mortality were similar in both groups. CDSBA were less likely to present a discrete mass [35% vs 93%; p &lt; 0.001] and were more often stricturing or fistulising [75% vs 10%, respectively, p &lt; 0.001] than NSBA. Microscopically, CDSBA were relatively heterogeneous, exhibiting at least three distinct growth patterns in 39% compared with 1% of NSBA [p = 0.01]. Low-grade tubuloglandular adenocarcinoma was the predominant pattern in 19% of CDSBA compared with 0% of NSBA [p = 0.003]. CDSBA were more frequently DNA mismatch repair proficient [90% vs 62%; p = 0.04] and exhibited profiles of frequently mutated genes similar to those of NSBA, except for IDH1 [18%] and SMAD4 [12%] mutations that occurred uniquely in CDSBA.

Conclusions
These observations, based on the largest single-centre series described hitherto, establish that CDSBA is a distinct clinical, pathological, and molecular entity.
STELO: a new tool for family physicians for the correct identification of inherited cancer syndromes
Authors: Mariani Chiara , Carnevali Ileana , Lapi Francesco , Paganini Elisa , Civitelli Chiara , Muzzolon Jessica , Franzetti Anna , Guerroni Alessandro , Tibiletti Maria Grazia 
Published: August 2019

Abstract

Background
The hereditary cancer syndromes represent overall <10% of all cancers. These syndromes are not irrelevant for public health because all the cancers typical of these syndromes affected young people and many members of the same family and the cancers are more aggressive than the sporadic ones and need specific surgery and medical therapy. We developed a new family assessment tool: STELO designed for family physicians to identify patients could benefit from Cancer Genetic Counselling.

Objective
Test the sensitivity and specificity of a new assessment tool for the correct identification of inherited cancer syndromes.

Methods
Retrospectively we tested the new tool on a subset of patients who had already undergone genetic counselling at the Cancer Genetic Counselling Service of ASST (Azienda Socio Sanitaria Territoriale) Settelaghi Varese, to investigate sensitivity, specificity and applicability of this new tool in routine genetic screening. STELO responses were matched against the opinion of two cancer geneticists (i.e. gold standard) who blinded each other decided if the history of these patients was properly suspected as a hereditary cancer syndrome.

Results
The Genetic Counselling Service followed 546 subjects from 2014 to 2015. STELO tool was tested retrospectively on these clinical records and resulted positive in 418 cases, out of 546 (76.5%). STELO reported, towards the gold standard, 88.5% and 52.3% of sensitivity and specificity, respectively.

Conclusions
STELO has demonstrated to have a good sensitivity. The specificity was expectedly low given that STELO has been developed for general medicine, so it needs to be simple, practical, of rapid consultation and effectively used in clinical practice.
Impacts of the rhizosphere effect and plant species on organic carbon mineralization rates and pathways, and bacterial community composition in a tidal marsh
Authors: Liu Yuxiu , Luo Min , Ye Rongzhong , Huang Jiafang , Xiao Leilei , Hu Qikai , Zhu Aijv , Tong Chuan 
Published: August 2019

ABSTRACTDespite the growing recognition regarding the carbon cycle in the rhizosphere of upland ecosystems, little is known regarding the rhizosphere effect on soil organic carbon (SOC) mineralization in tidal marsh soils. In the current study, in situ rhizobox experiments (including rhizosphere and inner and outer bulk soil) were conducted in an estuarine tidal marsh. Our results showed that a higher abundance of total bacteria, Geobacter, dsrA and mcrA and lower α-diversity were observed in the rhizosphere relative to the bulk soil. Rhizosphere effects shifted the partition of terminal metabolic pathways from sulfate reduction in the bulk soil to the co-dominance of microbial Fe(III) and sulfate reduction in the rhizosphere. Although the rhizosphere effect promoted the rates of three terminal metabolic pathways, it showed greater preference towards microbial Fe(III) reduction in the tidal marsh soils. Plant species had little impact on the partitioning of terminal metabolic pathways, but did affect the potential of total SOC mineralization together with the abundance and diversity of total bacteria. Both the rhizosphere effect and plant species influenced the bacterial community composition in the tidal marsh soils; however, plant species had a less pronounced impact on the bacterial community compared with that of the rhizosphere effect.
Thermophilic methanotrophs: in hot pursuit
Authors: Houghton Karen M , Carere Carlo R , Stott Matthew B , McDonald Ian R 
Published: August 2019

ABSTRACTMethane is a potent greenhouse gas responsible for 20–30% of global climate change effects. The global methane budget is ∼500–600 Tg y−1, with the majority of methane produced via microbial processes, including anthropogenic-mediated sources such as ruminant animals, rice fields, sewage treatment facilities and landfills. It is estimated that microbially mediated methane oxidation (methanotrophy) consumes >50% of global methane flux each year. Methanotrophy research has primarily focused on mesophilic methanotrophic representatives and cooler environments such as freshwater, wetlands or marine habitats from which they are sourced. Nevertheless, geothermal emissions of geological methane, produced from magma and lithosphere degassing micro-seepages, mud volcanoes and other geological sources, contribute an estimated 33–75 Tg y−1 to the global methane budget. The aim of this review is to summarise current literature pertaining to the activity of thermophilic and thermotolerant methanotrophs, both proteobacterial (Methylocaldum, Methylococcus, Methylothermus) and verrucomicrobial (Methylacidiphilum). We assert, on the basis of recently reported molecular and geochemical data, that geothermal ecosystems host hitherto unidentified species capable of methane oxidation at higher temperatures.