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140 results on '"Xu, Zejian"'

29. Convolutional Neural Network-Based Question Answering Over Knowledge Base with Type Constraint

Author

Chen, Yongrui, Li, Huiying, Xu, Zejian, Barbosa, Simone Diniz Junqueira, Series Editor, Filipe, Joaquim, Series Editor, Kotenko, Igor, Series Editor, Sivalingam, Krishna M., Series Editor, Washio, Takashi, Series Editor, Yuan, Junsong, Series Editor, Zhou, Lizhu, Series Editor, Ghosh, Ashish, Series Editor, Zhao, Jun, editor, Harmelen, Frank van, editor, Tang, Jie, editor, Han, Xianpei, editor, Wang, Quan, editor, and Li, Xianyong, editor

Published
2019
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46. Recent advances in soy protein extraction technology.

Author

Zhao, Yuan, Tian, Ran, Xu, Zejian, Jiang, Lianzhou, and Sui, Xiaonan

Subjects
TECHNOLOGICAL innovations, EXTRACTION techniques, ULTRAFILTRATION, SOYBEAN, SOY proteins
Abstract

Protein extraction from soybeans is a vital part of the soy industry. Traditionally, the extraction of soy protein has been done by alkaline extraction and isoelectric precipitation. With the advancement of technology, more extraction techniques have been developed, and are superior to this traditional method. In this review, the composition and classification of soy protein are summarized. Next, the current emerging technologies for soy protein extraction are highlighted. Three extraction technologies, namely reverse micellar, enzyme‐assisted and membrane ultrafiltration, are reviewed in detail. Finally, the research prospects and trends of soy protein extraction technology are also summarized. [ABSTRACT FROM AUTHOR]

Published
2023
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49. Plastic behavior and failure mechanism of Ti-6Al-4V under quasi-static and dynamic shear loading

Author

Yu Liu, Xu Zejian, Hongzhi Hu, P.J. Tan, Fenglei Huang, and Xiaodong He

Subjects
Materials science, Computer simulation, Mechanical Engineering, Aerospace Engineering, 020101 civil engineering, Ocean Engineering, Failure mechanism, 02 engineering and technology, Flow stress, 0201 civil engineering, Simple shear, 020303 mechanical engineering & transports, 0203 mechanical engineering, Shear (geology), Mechanics of Materials, Automotive Engineering, Shear stress, Composite material, Shear zone, Safety, Risk, Reliability and Quality, Quasistatic process, Civil and Structural Engineering
Abstract

A new kind of double-shear specimen (DSS) is used to study quasi-static and dynamic behaviors of Ti-6Al-4V under simple shear conditions. With different loading techniques, a wide range of shear strain rates are covered from 0.002 s−1 to 60,000 s−1. The flow stress curves are determined under different conditions. It's observed that the work-hardening effect on the flow stress is weakened gradually with the increasing strain rates. Both the yield stress and the failure initiation stress show an increasing tendency with the strain rates. On the contrary, the failure initiation strain and the fracture strain both decrease with strain rates. From numerical simulation, it's seen that a shear dominated stress/strain state is formed in the shear zone, where the stress triaxiality and the Lode angle parameter basically keep constant for different strain rates. Based on the fracture morphology, it's concluded that with the increasing shear strain rates the failure mechanism changes from a ductile fracture to an ASB dominated process. The macro regularities of the failure properties can be explained well by the different micro-mechanisms.

Published
2019

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