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46 results on '"Yu, Weixin"'

5. Plywood-like structures of injection-molded polypropylene

Author

Wang, Guanglong, Cao, Junhui, Hou, Shusen, Ding, Peng, Yu, Weixin, Yang, Zhijun, and Chen, Jingbo

Subjects
Crystals -- Structure, Polypropylene -- Structure -- Mechanical properties, Injection molding -- Usage, Engineering and manufacturing industries, Science and technology
Abstract

N,N'-dicyclohexyl-2,6-naphthalenedicarboxamide, a commercial nucleating agent, can dissolve into molten polypropylene (PP) and self-organize into needle-like crystals when the melt temperature reaches 260[degrees]C. As temperature decreases, PP molecules crystallize on the surface of the needle-like crystals with their c-axis perpendicular to the long axis of the crystal. Under a flow field in injection molding, PP chains are parallel or perpendicular to the flow direction at different depths owing to the difference in crystallization kinetics and applied shear rate in the melt, forming a plywood-like material. This unique structure can simultaneously improve the toughness and strength of plastic parts. Herein, we present a novel method of producing high-performance plastic articles based on general plastics by manipulating their morphology and structure. KEYWORDS crystal structures, injection molding, mechanical properties, orientation, poly(propylene) (PP), structure-property relations, 1 | INTRODUCTION Plywood is composed of piled veneers in which the wood fibers of adjacent piles are perpendicular to each other. This particular structure ensures that the material is [...]

Published
2021
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13. KARS mediates intra-translational deposition ofN6-acetyl-L-lysine in nascent proteins to contribute the acetylome in cells

Author

Guo, Dingyuan, primary, Zhang, Xiaoyan, additional, He, Jie, additional, Yu, Weixin, additional, Zhou, Runxin, additional, Tong, Fuqiang, additional, Yin, Sibi, additional, Wang, Yu, additional, Yang, Yuwen, additional, Xu, Xin, additional, Wang, Long, additional, Fan, Mingzhu, additional, Feng, Shan, additional, Hong, Changbao, additional, Huang, Chuixiu, additional, Liu, Ke, additional, Ouyang, Zhuqing, additional, and Wang, Yugang, additional

Published
2023
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41. Microstructure Evolution during High Temperature Deformation of Ti-6Al-4V Alloy

Author

Luo Jiao, Li Miaoquan, and Yu Weixin

Subjects
Materials science, Alloy, Metallurgy, technology, industry, and agriculture, General Engineering, Strain rate, engineering.material, Deformation (meteorology), Microstructure, Isothermal process, Grain size, Volume fraction, engineering, Metallography, Composite material
Abstract

The effect of processing parameters, including deformation temperature, strain rate and deformation degree on the microstructure evolution and the microstructure variables (grain size and volume fraction of primary α phase) was investigated based on the microstructure observation and the quantitative metallography of the isothermally compressed Ti-6Al-4V alloy. The results show that the curves of grain size of primary α phase are oscillatory in the α+β two-phase region with increasing of the deformation temperature, and meanwhile the volume fraction of primary α phase decreases. The effect of the strain rate on the morphology of primary α phase is significant, while its effect on the microstructure variables of isothermally compressed Ti-6Al-4V alloy is dependent on deformation temperature. The grain size of primary α phase decreases with increasing of strain rate above 1203 K, but below 1203 K it fluctuates. The curves of volume fraction of primary α phase are oscillatory with increasing of strain rate above 1223 K, but below 1223 K the volume fraction decreases. The grain size of primary α phase increases slightly after a drop with increasing of the deformation degree, and meanwhile the secondary α phase decreases gradually. The effect of deformation degree on the volume fraction of primary α phase is not significant.

Published
2010

42. Serum cytoskeleton-associated protein 4 as a biomarker for the diagnosis of hepatocellular carcinoma.

Author

Wang, Yu, Yu, Weixin, He, Mingqing, Huang, Yan, Wang, Mingyue, and Zhu, Jinzhou

Subjects
*BLOOD proteins, *HEPATOCELLULAR carcinoma, *HEPATITIS B, *ONCOGENIC proteins, *RECEIVER operating characteristic curves, *ENZYME-linked immunosorbent assay, *CHRONIC hepatitis B
Abstract

Background: Alpha-fetoprotein (AFP) is the most commonly applied biomarker for diagnosis of hepatocellular carcinoma (HCC), but the low sensitivity and specificity limit its clinical application. Cytoskeleton-associated protein 4 (CKAP4) is a novel oncogenic protein involved in the development and progression of HCC. This study aimed to evaluate whether measurement of circulating CKAP4 could improve diagnostic accuracy for HCC. Methods: We analyzed data for patients with HCC, chronic hepatitis B infection, and cirrhosis and healthy controls (n=100 in each group), recruited from two centers between July 2013 and December 2015. Circulating levels of CKAP4 were measured with commercial enzyme-linked immunosorbent assay kits. Receiver operating characteristics were used to evaluate diagnostic accuracy. Results: Serum concentrations of CKAP4 were significantly elevated in the HCC group, in comparison with the three control groups (all P<0.001). The combined biomarker panel (AFP and CKAP4), created by binary logistic regression, presented better performance (area under the curve [AUC] 0.936, 95% CI [0.908–0.965], sensitivity 0.800, specificity 0.963) than AFP (AUC 0.875 [0.835–0.914], sensitivity 0.930, specificity 0.430, P=0.001) or CKAP4 (AUC 0.821 [0.776–0.866], sensitivity 0.790, specificity 0.670, P<0.001) alone to identify HCC, even though CKAP4 alone was not better than AFP (P=0.093). Furthermore, the combined panel also presented a better performance even in identifying early HCC (AUC 0.922 [0.833–0.961]). Conclusion: Serum CKAP4 is a novel biomarker for HCC, and it could complement AFP in improving diagnostic accuracy. [ABSTRACT FROM AUTHOR]

Published
2019
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43. Deubiquitinases in cancer

Author

Wei, Rongbin, primary, Liu, Xiaodong, additional, Yu, Weixin, additional, Yang, Tianshu, additional, Cai, Wenping, additional, Liu, Junjun, additional, Huang, Xiao, additional, Xu, Guo-tong, additional, Zhao, Shouliang, additional, Yang, Jianhua, additional, and Liu, Shangfeng, additional

Published
2015
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