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1,004 results on '"Liu, Shuwei"'

153. Biochar reduced soil nitrous oxide emissions through suppressing fungal denitrification and affecting fungal community assembly in a subtropical tea plantation

Author

Ji, Cheng, primary, Han, Zhaoqiang, additional, Zheng, Fengwei, additional, Wu, Shuang, additional, Wang, Jinyang, additional, Wang, Jidong, additional, Zhang, Hui, additional, Zhang, Yongchun, additional, Liu, Shuwei, additional, Li, Shuqing, additional, and Zou, Jianwen, additional

Published
2022
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166. Microstructure and mechanical properties of Al/steel dissimilar welds fabricated by friction surfacing assisted friction stir lap welding

Author

Mingrun Yu, Li Zhou, Hongyun Zhao, Zili Zhang, Liu Shuwei, Xiaoguo Song, and Baiyang Liu

Subjects
lcsh:TN1-997, 010302 applied physics, Materials science, Metals and Alloys, Intermetallic, 02 engineering and technology, Welding, 021001 nanoscience & nanotechnology, Microstructure, 01 natural sciences, Surfaces, Coatings and Films, law.invention, Biomaterials, Diffusion layer, law, 0103 physical sciences, Ceramics and Composites, Fracture (geology), Friction stir welding, Composite material, Tool wear, 0210 nano-technology, lcsh:Mining engineering. Metallurgy, Necking
Abstract

Al/steel dissimilar welds were obtained by friction stir lap welding (FSLW) with an Al interlayer, which was fabricated by friction surfacing (FS). In present study, the tool pin was totally plunged into the Al plate and interlayer without stirring steel, which avoided the tool wear. The Al plate and interlayer were remarkably intermixed as pin length increased. A diffusion layer, instead of the intermetallic layer, was found at the Al/steel interface, indicating the enhanced atomic migration and related interfacial bonding. The maximum failure load of the joints of 2.8 kN was reached when the 2.5 mm pin tool was used. The heterogeneous microstructure, which was caused by the intermixing, was responsible for the fracture, according to the fracture profiles. Necking and dimples were depicted from the fractographies, indicating that the joints were failed by plastic fracture. Keywords: Al/steel dissimilar joining, Friction surfacing, Friction stir welding, Microstructure, Mechanical properties

Published
2020

169. Elevated CO2 negates O3 impacts on terrestrial carbon and nitrogen cycles

Author

Xia, Longlong, primary, Lam, Shu Kee, additional, Kiese, Ralf, additional, Chen, Deli, additional, Luo, Yiqi, additional, van Groenigen, Kees Jan, additional, Ainsworth, Elizabeth A., additional, Chen, Ji, additional, Liu, Shuwei, additional, Ma, Lei, additional, Zhu, Yuhao, additional, and Butterbach-Bahl, Klaus, additional

Published
2021
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177. Correction to “Cu2+-Loaded Polydopamine Nanoparticles for Magnetic Resonance Imaging-Guided pH- and Near-Infrared-Light-Stimulated Thermochemotherapy”

Author

Ge, Rui, primary, Lin, Min, additional, Li, Xing, additional, Liu, Shuwei, additional, Wang, Wenjing, additional, Li, Shuyao, additional, Zhang, Xue, additional, Liu, Yi, additional, Liu, Lidi, additional, Shi, Feng, additional, Sun, Hongchen, additional, Zhang, Hao, additional, and Yang, Bai, additional

Published
2021
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181. Association of rs9939609 in FTOwith BMI among Polynesian peoples living in Aotearoa New Zealand and other Pacific nations

Author

Krishnan, Mohanraj, Phipps-Green, Amanda, Russell, Emily M., Major, Tanya J., Cadzow, Murray, Stamp, Lisa K., Dalbeth, Nicola, Hindmarsh, Jennie Harré, Qasim, Muhammad, Watson, Huti, Liu, Shuwei, Carlson, Jenna C., Minster, Ryan L., Hawley, Nicola L., Naseri, Take, Reupena, Muagututi’a Sefuiva, Deka, Ranjan, McGarvey, Stephen T., Merriman, Tony R., Murphy, Rinki, and Weeks, Daniel E.

Abstract

The fat mass and obesity associated (FTO) locus consistently associates with higher body mass index (BMI) across diverse ancestral groups. However, previous small studies of people of Polynesian ancestries have failed to replicate the association. In this study, we used Bayesian meta-analysis to test rs9939609, the most replicated FTOvariant, for association with BMI with a large sample (n= 6095) of Aotearoa New Zealanders of Polynesian (Māori and Pacific) ancestry and of Samoan people living in the Independent State of Samoa and in American Samoa. We did not observe statistically significant association within each separate Polynesian subgroup. Bayesian meta-analysis of the Aotearoa New Zealand Polynesian and Samoan samples resulted in a posterior mean effect size estimate of +0.21 kg/m2, with a 95% credible interval [+0.03 kg/m2, +0.39 kg/m2]. While the Bayes Factor (BF) of 0.77 weakly favors the null, the BF = 1.4 Bayesian support interval is [+0.04, +0.20]. These results suggest that rs9939609 in FTOmay have a similar effect on mean BMI in people of Polynesian ancestries as previously observed in other ancestral groups.

Published
2023
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182. Gas-Flow-Driven Aligned Growth of Graphene on Liquid Copper

Author

Tianbao Ma, Xiahong Zhou, Qiang Xu, Xudong Xue, Qianqing Jiang, Zhiwei Yu, Liu Shuwei, Liping Wang, Gui Yu, and Huaping Wang

Subjects
Materials science, Flow (mathematics), Chemical engineering, Graphene, law, Liquid copper, General Chemical Engineering, Materials Chemistry, General Chemistry, law.invention
Published
2019

185. Vehicle Running State Estimation by Adaptive Soft-Sensing Algorithm

Author

Liang Hao, Liu Shuwei, and Li-Xin Guo

Subjects
0209 industrial biotechnology, Article Subject, Computer science, lcsh:Mathematics, General Mathematics, General Engineering, Estimator, 02 engineering and technology, Kalman filter, lcsh:QA1-939, Acceleration, 020303 mechanical engineering & transports, 020901 industrial engineering & automation, 0203 mechanical engineering, lcsh:TA1-2040, Robustness (computer science), Soft sensing, lcsh:Engineering (General). Civil engineering (General), Algorithm
Abstract

Vehicle running state adaptive unscented Kalman filter soft-sensing algorithm is put forward in this paper based on traditional UKF which can estimate vehicle running state parameters and suboptimal Sage-Husa noise estimator which can effectively solve the problem of noises varying with time. Meanwhile 3-DOF dynamic model of vehicle and HSRI tire model are established. So vehicle running state can be accurately estimated by fusing the low-cost measurement information of longitudinal and lateral acceleration and handwheel steering angle. Under the typical working condition, AUKF soft-sensing algorithm is verified with substantial vehicle tests. Comparing with UKF soft-sensing algorithm, the result indicates AUKF soft-sensing algorithm has a good performance in robustness and is able to realize the effective estimation of vehicle running state more precisely than UKF soft-sensing algorithm.

Published
2018

188. Response analysis of 3D braided two-stage gear system excited by different frequency signals

Author

Xiaomin Ji, Tang Xinyao, Fengfeng Liu, Weiliang Zhang, Liu Shuwei, Wang Xupeng, and Tengyuan Xue

Subjects
Physics, Mechanical Engineering, Acoustics, Response analysis, lcsh:Mechanical engineering and machinery, 02 engineering and technology, 021001 nanoscience & nanotechnology, Physics::Classical Physics, 020303 mechanical engineering & transports, 0203 mechanical engineering, Gear system, Excited state, lcsh:TJ1-1570, Stage (hydrology), 0210 nano-technology
Abstract

The knitting principle of 3D braided gear was studied, and the dynamic model of the two-stage gear system was established. The fourth-order Runge-Kutta method was used to numerically simulate the dynamic characteristics of common gear and 3D braided gear. The results showed that the fundamental frequency ω1 of the static transmission error excitation had the greatest effect on the speed and frequency characteristics of the first-stage gear along the meshing line. The research on frequency characteristics of common gear and 3D braided gear shows that the fundamental frequency ω1 of the static transmission error excitation has a large effect on the speed and frequency characteristics of the first-stage gear along the meshing line. With the reduction of the gear mass and moment of inertia, the amplitude in the low-frequency band increases. The vibration resonance of the system is studied by defining the amplitude gain of the response of the system output at the low-frequency signal ω3. The results show that with the reduction of gear mass and moment of inertia, when the input stage torque fluctuation frequency is Ω > 5, the fluctuation of amplitude gain Q disappears, which indicates that the vibration resistance of the 3D braided gear to high-frequency input stage torque fluctuation frequency is greatly improved.

Published
2021

189. Parametric characteristics analysis of three cells in 3D and five-directional annular braided composites

Author

Xiaomin Ji, Fengfeng Liu, Wang Xupeng, Weiliang Zhang, Liu Shuwei, and Tang Xinyao

Subjects
Surface (mathematics), Muscle Physiology, Physiology, Hands, 02 engineering and technology, Knuckles, Quantitative Biology::Cell Behavior, Tendons, 0203 mechanical engineering, Skeletal Joints, Mathematics::Quantum Algebra, Materials Testing, Medicine and Health Sciences, Biomechanics, Fiber, Cell Cycle and Cell Division, Composite material, Musculoskeletal System, Materials, Parametric statistics, Multidisciplinary, Software Engineering, 021001 nanoscience & nanotechnology, Biomechanical Phenomena, Fibers, Arms, 020303 mechanical engineering & transports, Cell Processes, Node (physics), Physical Sciences, Engineering and Technology, Medicine, Anatomy, 0210 nano-technology, Research Article, Computer and Information Sciences, Materials science, Parametric analysis, Science, Materials Science, Material Properties, Position (vector), Carbon Fiber, Inner diameter, Humans, Mechanical Properties, Skeleton, Biology and Life Sciences, Cell Biology, Source Code, Volume (thermodynamics), Body Limbs, Composite Materials, Musculoskeletal Mechanics
Abstract

On the basis of analyzing the movement law of 3D circular braided yarn, the three-cell model of 3D five-direction circular braiding composite material is established. By analyzing the node position relationship in various cell models, the calculation formulas of braiding angle, cell volume, fiber volume and fiber volume content in various cell models are obtained. It is found that there are four different braiding angles in four internal cells, and the braiding angles in internal cells gradually increase from inside to outside. The braiding angles of upper and lower surface cells are approximately equal. With the increase of the length of the knuckles, the braiding angles of each cell decrease, and the braiding angles of the four inner cells decrease greatly, while the braiding angles of upper and lower surfaces decrease slightly. The results of parametric analysis showed that with the increase of the length of the knuckles and the inner diameter of cells, the mass of cells increased proportionally, while the total fiber volume content of cells decreased. With the increase of braiding yarn number and axial yarn number, the unit cell mass decreases in direct proportion, and the unit cell total fiber volume content increases. Through the research results of this paper, the geometrical characteristics of the cell model under different braided parameters can be obtained, which greatly improves the analysis efficiency.

Published
2021

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