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1,633 results on '"ZHU Zhiqiang"'

1. Electrical properties and degradation behaviour of BNT-BT-LN ceramics

Author

Xu Qi, Yan Xuerui, Zhu Zhiqiang, and Liu Hanxing

Subjects
bnt-bt, linbo3, dielectric temperature stability, ferroelectric properties, mean time to failure, Clay industries. Ceramics. Glass, TP785-869
Abstract

In this paper, phase composition, microstructure, dielectric, ferroelectric and failure behaviour of lead-free (1-x)(Bi0.5Na0.5TiO3-BaTiO3)-xLiNbO3 (BNT-BT-LN, x = 0.01, 0.03, 0.05, 0.07 and 0.10) ceramics were investigated. The introduction of LiNbO3 did not change the original perovskite crystal structure of the ceramics with the coexistence of rhombohedral and tetragonal phases. However, with the increase of x (i.e. LN content), the characteristic split XRD peaks became more and more symmetrical. It was observed by scanning electron microscopy that the growth of ceramic grain size was promoted with the increase of LN content. The dielectric temperature stability was also effectively improved with addition of LN. When x = 0.07, the temperature coefficient of capacitance (TCC150 °C) was below ±15% in temperature range of 35-400 °C with moderate permittivity ("r150 °C = 2050) and low dielectric loss (tan _150 °C = 0.005). The RC time constant of this sample was higher than 19.3 s at temperatures up to 245 °C. The mean time to failure (TTF) empirical formula for the BNT-BT-LN dielectrics was established through highly accelerated life test. As predicted, the TTF could reach 4.67 × 106 h under the applied electric field of 7 kV/mm at room temperature.

Published
2023
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2. Simulation and analysis of forced air precooling performance of apples with different fruit diameters

Author

TIAN Jinjin, GU Xudong, ZHANG Zhe, ZHU Zhiqiang, and JI Xian

Subjects
forced air precooling, apple, fruit trail, cfd simulation, packaging method, stacking method, Food processing and manufacture, TP368-456
Abstract

Objective: To analyze the effect of apples of different fruit diameters on differential pressure precooling under the same box. Methods: Based on the spherical analogy model and heat transfer theory, the CFD unsteady SST k-ω turbulence model was used to numerically simulate the differential pressure precooling of apples with different air supply air speed, temperature, box opening size and fruit diameter, and three different working conditions were selected for accuracy. The simulation scheme of mixed orthogonal test was used to discuss the effects of different factors and different fruit diameters on the cooling rate and pre-cooling uniformity. Results: The lower of the air supply temperature was, the faster the wind speed was, the smaller of the apple diameter was, and the faster of the cooling rate it was. The higher of the supply air temperature was, the faster the wind speed was, the larger of the opening was, and the better of the uniformity of precooling it was. Based on the comparison of orthogonal test results, the effect of fruit diameter on differential pressure precooling was significant. Conclusion: Apple fruit size has the greatest influence on the cooling rate and uniformity of pre-cooling, and reasonable packaging and stacking methods need to be adopted for apples with different fruit diameters.

Published
2024
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5. STATICS BEHAVIOR OF INTERFERENCE FIT OF CRH2 EMUS’ BEARING-AXLE COUPLING SYSTEM

Author

CAO QingSong, XIANG Qin, XIONG GuoLiang, and ZHU ZhiQiang

Subjects
Interference fit, Fretting, CRH2 EMUs, Stress, Statics behavior, Mechanical engineering and machinery, TJ1-1570, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

To the interference fit surface of EMUs’ bearing-axle coupling system occurred fretting damage frequently,the solid model and finite element model of the CRH2 EMUs’ bearings-axle coupling system were established with considering the influence of load and interference. The statics behavior of bearing-axle system was studied by analyzing the stress distribution and deformation of matching surface under different routes or multiple interference. The results show that the maximum stress of the curving route is larger than the straight route under the same interference. The maximum stress and plastic deformation would become larger with the increasing of interference on the same route. While the interference was 0. 15 mm which exceeded the maximum allowable range,bearing inner race arose crack. The research can provide reference for the study on fretting problem of interference fit of EMUs’ bearings-axles system.

Published
2016
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6. Research on the Development of New Energy Vehicle Sharing in China Based on the Concept of Green Travel

Author

Lv Anqi, Zhu Zhiqiang, Cheng Guohua, Jia Yi, and Shi Ling

Subjects
Environmental sciences, GE1-350
Abstract

As the urbanization in China is accelerating, “urban diseases” such as city congestion and environmental pollution arise. Traffic is one of the important factors leading to such urban problems. Therefore, in order to succeed in pollution prevention and control, overcome the shortcomings in urban traffic, and realize high-quality development of transport service, we should promote the development of green transport based on low carbon and environmental protection, and intensively implement green travel. First of all, we should accelerate the upgrading of transportation equipment technology, speed up the promotion and application of new energy vehicles in the field of car sharing, and promote the green and low-carbon development of transport service. Based on it, this paper first defines the green travel, new energy vehicle sharing and other related concepts, and analyzes the impact of new energy vehicle sharing, and then sorts out the development process of new energy vehicle sharing in China and analyzes the development trend and problems being confronted with in this field, and finally puts forward the development policy suggestions on domestic new energy vehicle sharing.

Published
2020
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12. The Users’ Purchase Behavior Research of Buying Clothing of Live Streaming eCommerce on Tiktok

Author

Zheng, Huang, Zhu, Zhiqiang, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Tan, Kay Chen, Series Editor, Pan, Jeng-Shyang, editor, Pan, Zhigeng, editor, Hu, Pei, editor, and Lin, Jerry Chun-Wei, editor

Published
2024
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13. Research on Cosmetics Consumer Behavior Analysis and Marketing Strategy Optimization on E-Commerce Platform 'Xiaohongshu'

Author

Zhang, Xuwei, Zhu, Zhiqiang, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Tan, Kay Chen, Series Editor, Pan, Jeng-Shyang, editor, Pan, Zhigeng, editor, Hu, Pei, editor, and Lin, Jerry Chun-Wei, editor

Published
2024
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14. Exploration on the Evaluation Index System of E-commerce Application Talents’ Literacy for Industry Needs

Author

Zhu, Zhiqiang, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Tan, Kay Chen, Series Editor, Pan, Jeng-Shyang, editor, Pan, Zhigeng, editor, Hu, Pei, editor, and Lin, Jerry Chun-Wei, editor

Published
2024
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15. The researches on energy sustainability in Northern China

Author

Wang Ping, Zhu Zhiqiang, and Zhang Shuang

Subjects
Environmental sciences, GE1-350
Abstract

Energy, which accounts for two-thirds of today’s greenhouse gas emissions, is the key to reducing greenhouse gas emissions and slowing global warming. In this paper, the IPCC-recommended reference approach and scenario analysis were applied to evaluate dynamic change of the energy supply and energy-related carbon dioxide emissions within the period of 2000-2025 in Northern China (NC). The results show that energy importing reliance reached 85% in 2015 and the energy structure has become more diversified in NC. In addition, the per-capita CO2 emission is significantly higher while carbon intensity is lower than those of the national average. Under the LC scenario, CO2 emissions begin to fall for the first time in 2022. Hence, if Energy-Saving and Emission-Reduction strategy and regional planning for NC are implemented fully, NC will achieve the national emission reduction targets in 2025 and will have a large CO2 mitigation potential in the future.

Published
2018
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18. List of contributors

Author

Abdelkader, Labidi, primary, Atif, Sial, additional, Dong, Qibing, additional, Duan, Yanyan, additional, Hou, Chen, additional, Li, Ximing, additional, Shehzad, Ahmed, additional, Wang, Chuanyi, additional, Wang, Cong, additional, Wang, Lan, additional, Zhang, Wei, additional, Zhu, Qiuhui, additional, and Zhu, Zhiqiang, additional

Published
2024
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26. Status of aquatic organisms resources and their environments in Yangtze River system (2017–2021)

Author

Yang, Haile, Shen, Li, He, Yongfeng, Tian, Huiwu, Gao, Lei, Wu, Jinming, Mei, Zhigang, Wei, Nian, Wang, Lin, Zhu, Tingbing, Hu, Feifei, Gong, Jinling, Du, Hongchun, Duan, Xinbin, Deng, Huatang, Wang, Daoqun, Zhu, Fengyue, Li, Yunfeng, Wu, Fan, Ru, Huijun, Zhang, Yan, Li, Junyi, Yang, Junlin, Zhou, Yuntao, Fang, Dongdong, Wang, Yinping, Lin, Danqing, Yang, Yanping, Li, Peijie, Liu, Silei, Yang, Jian, Zhuang, Ping, Wang, Sikai, Zhang, Tao, Yang, Gang, Yang, Wenbo, Yuan, Lilai, Cao, Kun, Xu, Shuo, Liu, Huiyuan, Liang, Zhiqiang, Wang, Chongrui, Li, Hong, Yuan, Xiping, Yang, Xin, Fu, Yilong, Zhang, Yanping, Zhang, Haixin, Tao, Zhiying, Wang, Sheng, Gao, Xiaoping, Jin, Binsong, Li, Kemao, Wang, Guojie, Jian, Shenglong, Li, Yingqin, Xue, Chenjiang, Lei, Chunyun, Xue, Shaowei, Sun, Yi, Zhu, Bin, Shao, Ke, Hu, Xingkun, Xiong, Meihua, Du, Jun, He, Bin, Yan, Tao, Huang, Yingying, Zou, Yuanchao, Xie, Biwen, Wang, Yongming, Li, Bin, Liu, Fei, Zhang, Yaoyao, Fan, Fei, Wang, Zhijian, Huang, Jing, Gu, Haoran, Ge, Hailong, Dan, Yan, Li, Yan, Wang, Shuqiao, Zhang, Chuang, Zhou, Lu, Wang, Xue, Zeng, Sheng, Xiang, Yan, He, Xugang, Qin, Jianhui, Xia, Chengxing, Hou, Jie, Shi, Yifu, Gao, Lifang, Zhu, Zhiqiang, Shen, Hongbao, Du, Yun, Duan, Xuejun, Xiong, Jiawu, Yang, Deguo, Liu, Shaoping, Ni, Zhaohui, Zhang, Hui, Liu, Kai, Zhao, Feng, Li, Yingren, Wang, Jianwei, and Wei, Qiwei

Published
2024
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