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Ultimate Strength Analysis of Local Thinning Tee Pipe Considering Plastic Strengthening Effect

Journal of Physics: Conference Series 2020年第2期1650卷

作者： Wei Su Wenhao Luo Xianshan Dong Renhuai Liu MOE Key lab of Disaster Forecast and Control in Engineering Guangzhou 510632 China. Science and Technology on Reliability Physics and Application Technology of Electronic Component Laboratory China Electronic Product Reliability and Environmental Testing Research Institute Guangzhou 510610 China. School of Mechanics and Construction Engineering Jinan University Guangzhou 510632 China

In this paper, the locally thinned three-way structure under internal pressure is analyzed based on the theory of plastic strengthening effect and limit analysis. A finite element model is presented through ANSYS comm...

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Ultimate Strength Analysis of Three-Way Pipe Considering Plastic Reinforcement Effect

引用

Journal of Physics: Conference Series 2020年第2期1650卷

Considering the plastic reinforcement effect in materials, the plastic limit load of the three-way structure is analyzed. ANSYS commercial finite element software is used for numerical simulation. According to the res...

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JULOC：A local 3-D high-resolution crustal model in South China for forecasting geoneutrino measurements at JUNO

arXiv

引用

arXiv 2019年

作者： Gao, Ruohan Li, Zhiwei Han, Ran Wang, Andong Li, Yufeng Xi, Yufei Liu, Jingao Mao, Xin Sun, Yao Xu, Ya Beijing100083 China State Key Laboratory of Geodesy and Earth's Dynamics Institute of Geodesy and Geophysics Chinese Academy of Sciences Wuhan430077 China Science and Technology on Reliability and Environmental Engineering Laboratory Beijing Institute of Spacecraft Environment Engineering Beijing100094 China State Key Laboratory of Nuclear Resources and Environment East China University of Technology Nanchang330013 China Institute of High Energy Physics Chinese Academy of Sciences Beijing100049 China Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological Sciences Shijiazhuang050061 China Key Laboratory of Petroleum Resource Research Institute of Geology and Geophysics Chinese Academy of Sciences Beijing100029 China Institute of Earth Science Chinese Academy of Sciences Beijing100029 China

Geothermal energy is one of the keys for understanding the mechanisms driving the plate tectonics and mantle dynamics. The surface heat flux, as measured in boreholes, provides limited insights into the relative contributions of primordial versus radiogenic sources of the interior heat budget. Geoneutrino, electron antineutrino that is produced from the radioactive decay of the heat producing elements, is a unique probe to obtain direct information about the amount and distribution of heat producing elements in the crust and mantle. Cosmochemical, geochemical, and geodynamic compositional models of the Bulk Silicate Earth (BSE) individually predict different mantle neutrino fluxes, and therefore may be distinguished by the direct measurement of geoneutrinos. Due to low counting statistics, the results from geoneutrino measurements at several sites are inadequate to resolve the geoneutrino flux. However, the JUNO detector, currently under construction in South China, is expected to provide an exciting opportunity to obtain a highly reliable statistical measurement, which will produce sufficient data to address several vital questions of geological importance. However, the detector cannot separate the mantle contribution from the crust contribution. To test different compositional models of the mantle, an accurate a-priori estimation of the crust geoneutrino flux based on a three-dimensional (3-D) crustal model is important. This paper presents a 3-D crustal model over a surface area of 10 × 10 grid surrounding the JUNO detector and a depth down to the Moho discontinuity, based on the geological, geophysical and geochemical properties. This model provides a distinction of the thickness of the different crustal layers together with the corresponding Th and U abundances. We also present our predicted local contribution to the total geoneutrino flux and the corresponding radiogenic heat. Compared to previous studies where the surface layer is subdivided into a few geolog

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Micro-mechanism of low-density lipoproteins (LDL) transport in multi-layered arterial wall

引用

Journal of Physics: Conference Series 2021年第4期1748卷

作者： Erhui Wang Xuelan Zhang Kheder Suleiman Chang Shu Liancun Zheng School of Energy and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China State Key Laboratory of Cardiovascular Disease Center of Vascular Surgery Fuwai Hospital National Center for Cardiovascular Diseases Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100037 China School of Mathematics and Physics University of Science and Technology Beijing Beijing 100083 China

This paper investigates micro-mechanism of LDL transport numerically in a multi-layer arterial wall. A novel comprehensive 3D model is developed by considering the coupling interactions between vascular layers, and nu...

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Effect of adoption of electric vehicles on public health and air pollution in China: a modelling study

引用

The Lancet Planetary Health 2021年 5卷 S8-S8页

作者： Daniel E Horton Jordan L Schnell Daniel R Peters David C Wong Xi Lu Hao Gao Hongliang Zhang Patrick L Kinney Department of Earth and Planetary Sciences and Institute for Sustainability and Energy Northwestern University Evanston IL USA Cooperative Institute for Research in Environmental Sciences at the University of Colorado Boulder National Oceanic and Atmospheric Administration Global Systems Laboratory Boulder CO USA Program in Environmental Sciences Northwestern University Evanston IL USA Environmental Defense Fund Austin TX USA US Environmental Protection Agency Research Triangle Park NC USA School of Environment State Key Joint Laboratory of Environment Simulation and Pollution Control Tsinghua University Beijing China Beijing China Department of Earth System Science University of California Irvine Irvine CA USA Department of Environmental Science and Engineering Fudan University Shanghai China Department of Environmental Health Boston University School of Public Health Boston MA USA

Background Adoption of electric vehicles has the potential to reduce air pollutant and greenhouse gas emissions, hence China has implemented policies incentivising use of electric vehicles. However, much is unknown about the potential air quality and public health benefits of electric vehicles, including optimal vehicle type prioritisation and the vehicles' ability to reduce acute health impacts due to extreme air quality events. We aimed to assess the potential climate and acute public health benefits of use of electric vehicles during an extreme winter air pollution event. Methods In this modelling study, we used the Weather Research Forecast and Community Multiscale Air Quality Modeling System air quality model to simulate the interplay between weather and atmospheric chemistry. We used this model to examine potential co-benefits of electric vehicle adoption during an extreme pollution episode in China. We simulated heavy-duty and light-duty electric vehicle adoption scenarios, in which 40% of the population adopted a heavy-duty or light-duty passenger electric vehicle, re-mapped battery power needs to energy generation facilities, and characterised differences in public health outcomes using China-specific concentration-response functions. Findings We found that widespread adoption of heavy-duty electric vehicles would reduces nitric oxide and fine particulate matter resulting in 562 (95% CI 410–723) fewer premature acute deaths than the non-electrified baseline scenario. However, widespread adoption of heavy-duty electric vehicles does not reduce carbon dioxide emissions without the addition of emission-free electricity generation. By contrast, widespread adoption of light-duty electric vehicles robustly reduces greenhouse gas emissions, but results in lesser air quality improvements and fewer premature deaths avoided (145 [95% CI 38–333]) than the heavy-duty scenario. Economic effects of human health endpoints and carbon dioxide reductions for adoption of ligh

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