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1,124 results on '"Zhang, Weipeng"'

101. A stochastic HIV/HTLV-I co-infection model incorporating the AIDS-related cancer cells.

Author

Yang, Hongbin, Li, Xiaoyue, and Zhang, Weipeng

Subjects
MIXED infections, CANCER cells, ERGODIC theory, STOCHASTIC analysis, HIV, COMPUTER simulation
Abstract

This paper proposes a stochastic HIV/HTLV-I co-infection model incorporating the AIDS-related cancer cells and investigates its dynamical behaviours. The main methods are stochastic Lyapunov analysis and the ergodic theory. The existence and uniqueness of the global positive solution is proved as well as the stochastic ultimate boundedness. A unique stationary distribution is yielded. Furthermore, the sufficient conditions for the extinction of diseases are given. Finally, some numerical simulations are carried out to support the theoretical results. [ABSTRACT FROM AUTHOR]

Published
2024
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102. Morphology of Silver Particles and Films Arising from Particle‐Free Silver Ink Droplet Evaporation.

Author

Zhang, Weipeng, Yang, Jun, and Knopf, George K.

Subjects
CAPILLARY flow, SILVER, ETHYLENE glycol, SILVER ions, FLUOROSURFACTANTS, MORPHOLOGY
Abstract

The evaporation of particle‐free silver ink droplets on heated substrates directly impacts the morphology of the resultant silver particles and electrically conductive inkjet‐printed films. In this work, COMSOL Multiphysics simulations of the droplet evaporation process are used to help explain the fluidic processes responsible for the experimental observations. The results show that the silver particle morphology depends on its location within the evaporating droplet where large particles (3 to 5 µm) accumulate at the center and smaller ones (1 to 2 µm) in the area beyond the central region. The smallest particles (≈500 nm) are near the contact line. Without the fluoro‐surfactant FS‐31, an inner ring with 3 µm particles also appears within the evaporating droplet. The large particles at the central region originate from the fluid near the droplet's apex due to the accumulation of polyacrylamide in the concentrated ethylene glycol solvent near the flow‐abundant apex. Furthermore, the capillary flow along the fluid–air interface transports silver ions and particles throughout the droplet, causing the larger particles to fall onto the substrate at the central vortex, forming the inner ring. The simulations also demonstrate that the evaporating droplet heterogeneously accumulates ethylene glycol in a sandhill formation at the bottom center. [ABSTRACT FROM AUTHOR]

Published
2024
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103. Optimization Design and Experiment of High-Speed Drag-Reducing Trencher Based on Conservation Tillage.

Author

Zhang, Weipeng, Liu, Suchun, Ji, Yuxi, Gao, Shengbo, Zhao, Bo, Zhou, Liming, Xie, Ping, Jin, Xin, Qiu, Zhaomei, and Ma, Yanwu

Subjects
CONSERVATION tillage, TILLAGE, EXPERIMENTAL design, PLATYPUS, TEST methods, TEST design
Abstract

In the realm of high-speed precision broadcasting, the existing seeder opener proves inadequate for the speed of the seeding operation. We focus on the duckbill opener and employ the quadratic regression orthogonal rotation combination test design method to optimize the structural parameters of the opener. Throughout the experiment, the primary performance metrics encompassed the opener's working resistance and the side dumping distance. The selected experimental factors comprised the penetration angle, the angle of soil entry gap, the shovel body width, and the shovel length. The optimal arrangement of structural parameters has been determined: a penetration angle, a soil entry gap angle, a shovel body width of 21 mm, and a shovel length of 142 mm. These parameters contribute to increased velocity, reduced operational resistance, and minimal soil disturbance. Under this combination, the relative deviations between the recorded measurements and the theoretical outcomes for working resistance and the side dumping distance stand at 4.24% and 1.06%, respectively; these confirm the credibility of the optimization results. We performed adaptability testing and conducted a comparative analysis under various operational conditions to assess the innovative opener's ability to reduce force, minimize soil disruption, and maintain depth stability. The findings are as follows: At a depth of 5 cm and velocities ranging from 6 km/h to 8 km/h, an average working resistance reduction of 19.73%, a 5.64% decrease in the side dumping distance, and an average depth stability of 89.5% were observed. When operated at a speed of 7 km/h with a depth ranging from 3 cm to 5 cm, an average reduction of 19.66% in operational resistance, a 2.59% decrease in the side dumping distance, and an average depth stability of 91.1% were recorded. These results illustrate the innovative opener's capacity to significantly reduce working resistance and side dumping distance while satisfying the depth stability requisites. [ABSTRACT FROM AUTHOR]

Published
2024
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111. Efficient Order-Sensitive Activity Trajectory Search

Author

Guo, Kaiyang, Li, Rong-Hua, Qiao, Shaojie, Li, Zhenjun, Zhang, Weipeng, Lu, Minhua, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Weikum, Gerhard, Series Editor, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bouguettaya, Athman, editor, Gao, Yunjun, editor, Klimenko, Andrey, editor, Chen, Lu, editor, Zhang, Xiangliang, editor, Dzerzhinskiy, Fedor, editor, Jia, Weijia, editor, Klimenko, Stanislav V., editor, and Li, Qing, editor

Published
2017
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122. A bacterial symbiont in the gill of the marine scallop Argopecten irradians irradians metabolizes dimethylsulfoniopropionate

Author

Shu, Yi, primary, Wang, Yongming, additional, Wei, Zhongcheng, additional, Gao, Ning, additional, Wang, Shuyan, additional, Li, Chun‐Yang, additional, Xing, Qiang, additional, Hu, Xiaoli, additional, Zhang, Xiao‐Hua, additional, Zhang, Yu‐Zhong, additional, Zhang, Weipeng, additional, Bao, Zhenmin, additional, and Ding, Wei, additional

Published
2023
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128. Abstract 2531: FCN-683, a novel second-generation BCL-2 inhibitor, is highly potent, selective and efficacious against clinically relevant venetoclax-resistant mutations

Author

Lin, Shu (Sophie), primary, Liu, Hongbin, additional, Tan, Rui, additional, Zhang, Weipeng, additional, He, Chengxi, additional, Rong, Yue, additional, Huang, Zhuo, additional, Yu, Jinhua, additional, Wang, Yunling, additional, Qi, Yangli, additional, Zhao, Xingdong, additional, Jiang, Lihua, additional, Liu, Yanxin, additional, Wang, Xilei, additional, Zou, Zongyao, additional, Sun, Jing, additional, Gao, Yuwei, additional, Wang, Weibo, additional, Guan, Xiaohui, additional, and Wu, Yifang, additional

Published
2023
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141. Packaging and Interconnect Considerations in Neuromorphic Photonic Accelerators

Author

Nezami, Mohammadreza Sanadgol, primary, de Lima, Thomas Ferreira, additional, Mitchell, Matthew, additional, Yu, Shangxuan, additional, Wang, Jing, additional, Bilodeau, Simon, additional, Zhang, Weipeng, additional, Al-Qadasi, Mohammed, additional, Taghavi, Iman, additional, Tofini, Alexander, additional, Lin, Stephen, additional, Shastri, Bhavin J., additional, Prucnal, Paul R., additional, Chrostowski, Lukas, additional, and Shekhar, Sudip, additional

Published
2023
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