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303 results on '"Duan, Wenjun"'

19. Characterizations of Manganese-Based Desulfurated Sorbents for Flue-Gas Desulfurization

Author

Xuan, Yanni, Yu, Qingbo, Wang, Kun, Duan, Wenjun, Qin, Qin, Wang, Tao, editor, Chen, Xiaobo, editor, Guillen, Donna Post, editor, Zhang, Lei, editor, Sun, Ziqi, editor, Wang, Cong, editor, Haque, Nawshad, editor, Howarter, John A., editor, Neelameggham, Neale R, editor, Ikhmayies, Shadia, editor, Smith, York R., editor, Tafaghodi, Leili, editor, and Pandey, Amit, editor

Published
2019
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24. Towards an integrated research approach for urban forestry: The case of China

Author

Pei, Nancai, Wang, Cheng, Sun, Ruilin, Xu, Xinhui, He, Qing, Shi, Xin, Gu, Lin, Jin, Jiali, Liao, Juyang, Li, Jianrong, Zhang, Linping, Zhang, Zhiqiang, Hao, Zezhou, Jia, Baoquan, Qiu, Erfa, Zhang, Chang, Sun, Zhenkai, Jiang, Shasha, Duan, Wenjun, Zhang, Ye, Zhu, Yingfang, Lepczyk, Christopher A., Kress, W. John, and Konijnendijk van den Bosch, Cecil C.

Published
2019
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27. Flow Characteristic of Two-Phase Bubble Reactor for Slag Waste Heat Recovery

Author

Duan, Wenjun, Yu, Qingbo, Wang, Zhimei, Wu, Tianwei, Sun, Ziqi, editor, Wang, Cong, editor, Guillen, Donna Post, editor, Neelameggham, Neale R, editor, Zhang, Lei, editor, Howarter, John A., editor, Wang, Tao, editor, Olivetti, Elsa, editor, Zhang, Mingming, editor, Verhulst, Dirk, editor, Guan, Xiaofei, editor, Anderson, Allie, editor, Ikhmayies, Shadia, editor, Smith, York R., editor, Pandey, Amit, editor, Pisupati, Sarma, editor, and Lu, Huimin, editor

Published
2018
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28. Joint Measurement of Thermal Discomfort by Occupant Pose, Motion and Appearance in Indoor Surveillance Videos for Building Energy Saving.

Author

Wang, Yu, Wang, Yingjie, Duan, Wenjun, Zheng, Yuanjie, and Duan, Peiyong

Subjects
ENERGY conservation in buildings, VIDEO surveillance, CONVOLUTIONAL neural networks, INTELLIGENT buildings, ENERGY consumption of buildings, THERMAL comfort, OPTICAL flow
Abstract

To accurately describe the thermal comfort of indoor occupant used to regulate heating, ventilation and air conditioning (HVAC) system is a key goal to reduce energy consumption in intelligent buildings. In this paper, we propose a noncontact measurement of occupant thermal discomfort behavior as an index of thermal comfort. The method takes the existing monitoring image data in the building as the input to infer the occupant thermal discomfort directly, which saves the cost because there is no need to install new sensors in the building and the occupant does not need to wear additional equipment. The framework combined three channels of body posture, motion and performance information to infer occupant thermal discomfort behavior, it consists of a human detection and crop module, a posture analysis module, an optical flow extraction module and a 3D convolutional neural network module. The three channels describe the actions from different perspectives, and the proposed method makes full use of the complementarity of the three modalities to identify the occupant's thermal discomfort behaviors. Sixteen postures related to thermal discomfort were identified through a questionnaire, and 14,800 video clips containing these postures were collected for experimental evaluation. The results demonstrate the superior performances of our approach to the state-of-the-art techniques. The framework achieves noninvasive, cost-effective thermal comfort evaluation, and has potential value in improving energy efficiency of HVAC systems. [ABSTRACT FROM AUTHOR]

Published
2024
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36. Particles Flow Behavior Around Tubes in Moving Bed

Author

Liu, Junxiang, Yu, Qingbo, Duan, Wenjun, Zuo, Zongliang, Qin, Qin, Li, Li, editor, Guillen, Donna Post, editor, Neelameggham, Neale R., editor, Zhang, Lei, editor, Zhu, Jingxi, editor, Liu, Xuan, editor, Basu, Soumendra N., editor, Haque, Nawshad, editor, Wang, Tao, editor, Verhulst, Dirk E., editor, and Pandey, Amit, editor

Published
2016
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38. Tailoring Crystallization Growth of Small‐Molecule Organic Semiconductors by Modification with Conjugated Polymers for Organic Field‐Effect Transistors.

Author

Liu, Cheng‐Fang, Li, Shuangshuang, Zhang, Jing, Duan, Wenjun, Zhang, Yuheng, Liu, Heping, Luo, Qian, Chen, Shuoguo, Liu, Xu, and Lai, Wen‐Yong

Subjects
CONJUGATED polymers, ORGANIC field-effect transistors, ORGANIC semiconductors, CRYSTAL whiskers, POLYMER blends, SMALL molecules
Abstract

By investigating a typical small molecule, 6,13‐bis(triisopropylsilylethynyl) pentacene (TIPS), the crucial influence of conjugated polymers as additives on modulating the crystallization processes, crystalline structures, and carrier transport is unraveled. The conjugated polymer additives including poly[2,5‐bis(3‐alkylthio‐phen‐2‐yl)thieno(3,2‐b)thiophene (PBTTT) and poly(9,9‐di‐n‐octylfluorene‐alt‐benzothiadiazole) (F8BT) via a solution crystallization method can bring in crystalline structures that are not accessible by nonconjugated polymers, demonstrating superior order and enhanced carrier transport without external treatments. In such cases, polymorphism of the small molecules is manipulated by the features of conjugated polymers in the blend. According to optical microscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X‐ray diffraction (XRD), different crystalline morphologies such as fibrous crystals from TIPS/PBTTT and rod‐like crystals from TIPS/F8BT are observed, which is determined by the crystalline habitats and solubility of conjugated polymers in small‐molecule/polymer blends. Meanwhile, organic field‐effect transistors (OFETs) based on TIPS/PBTTT and TIPS/F8BT blends are prepared for the purpose of exploring the electrical characteristics, yielding the mobility of 0.3 and 3.53 cm2 V−1 s−1, respectively. The conjugated‐polymer‐mediated polymorphism of small molecules can provide an attractive platform to explore the fundamental relationship between crystal stacking and electrical behaviors without altering the chemical structure. [ABSTRACT FROM AUTHOR]

Published
2023
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