Search

Your search keyword '"Wu, Qiying"' showing total 9 results
Start Over Author "Wu, Qiying" Search Limiters Full Text
9 results on '"Wu, Qiying"'

2. Synergistic Effects of Soil-Based Irrigation and Manure Substitution for Partial Chemical Fertilizer on Potato Productivity and Profitability in Semiarid Northern China.

Author

Jiang, Lingling, Jiang, Rong, He, Ping, Xu, Xinpeng, Huang, Shaohui, Xie, Hanyou, Wang, Xiya, Wu, Qiying, Zhang, Xia, and Yang, Yi

Subjects
MANURES, IRRIGATION, LEAF area index, FERTILIZERS, WATER efficiency
Abstract

Soil-based irrigation and the partial substitution of chemical fertilizers with manure are promising practices to improve water and nitrogen (N) use efficiency. We hypothesize that their combination would simultaneously benefit potato production, tuber quality and profitability. A two-year experiment was conducted in semiarid northern China to investigate the combined effects of three water treatments [rainfed (W0), soil-based irrigation (W1), conventional irrigation (W2)] and three N treatments [no N (N0), chemical N (N1), 25% manure substitution (N2)] on these indicators, and to perform a comprehensive evaluation and correlation analysis. The results showed that water and N treatments separately affected all indicators except vitamin C content. Compared to W2, W1 significantly increased water productivity by 12% and irrigation water use efficiency (IWUE) by 30% due to 10% lower evapotranspiration and 21% lower water use. However, W1 and W2 negatively affected crude protein content. Conversely, this was compensated by the combination with N1 and N2. There were slight differences between N1 and N2 for all indicators on average across water treatments, while under W1, N2 significantly increased leaf area index (LAI) and N recovery efficiency (REN) by 18% and 29.4%, respectively, over N1. Also, comprehensive evaluations showed that W1N2 performed best, with the highest tuber yield, profit and acceptable quality. This can be explained by the increase in LAI, IWUE and REN due to the positive correlations with tuber yield and net return. Consequently, soil-based irrigation combined with 25% manure substitution had complementary effects on tuber quality and synergistic effects on potato productivity and profitability. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

4. Vascular endothelial growth factor attenuates neointimal hyperplasia of decellularized small-diameter vascular grafts by modulating the local inflammatory response

Author

Xie, Xinlong, primary, Wu, Qiying, additional, Liu, Yuhong, additional, Chen, Chunyang, additional, Chen, Zeguo, additional, Xie, Chao, additional, Song, Mingzhe, additional, Jiang, Zhenlin, additional, Qi, Xiaoke, additional, Liu, Sixi, additional, Tang, Zhenjie, additional, and Wu, Zhongshi, additional

Published
2022
Full Text
View/download PDF

6. Improved Cytocompatibility and Reduced Calcification of Glutaraldehyde-Crosslinked Bovine Pericardium by Modification With Glutathione

Author

Jiang, Zhenlin, Wu, Zhongshi, Deng, Dengpu, Li, Jiemin, Qi, Xiaoke, Song, Mingzhe, Liu, Yuhong, Wu, Qiying, Xie, Xinlong, Chen, Zeguo, and Tang, Zhenjie

Subjects
Histology, Biomedical Engineering, Bioengineering, Biotechnology
Abstract

Bioprosthetic heart valves (BHVs) used in clinics are fabricated via glutaraldehyde (GLUT) crosslinking, which results in cytotoxicity and causes eventual valve calcification after implantation into the human body; therefore, the average lifetime and application of BHVs are limited. To address these issues, the most commonly used method is modification with amino acids, such as glycine (GLY), which is proven to effectively reduce toxicity and calcification. In this study, we used the l-glutathione (GSH) in a new modification treatment based on GLUT-crosslinked bovine pericardium (BP) as the GLUT + GSH group, BPs crosslinked with GLUT as GLUT-BP (control group), and GLY modification based on GLUT-BP as the GLUT + GLY group. We evaluated the characteristics of BPs in different treatment groups in terms of biomechanical properties, cell compatibility, aldehyde group content detection, and the calcification content. Aldehyde group detection tests showed that the GSH can completely neutralize the residual aldehyde group of GLUT-BP. Compared with that of GLUT-BP, the endothelial cell proliferation rate of the GLUT + GSH group increased, while its hemolysis rate and the inflammatory response after implantation into the SD rat were reduced. The results show that GSH can effectively improve the cytocompatibility of the GLUT-BP tissue. In addition, the results of the uniaxial tensile test, thermal shrinkage temperature, histological and SEM evaluation, and enzyme digestion experiments proved that GSH did not affect the ECM stability and biomechanics of the GLUT-BP. The calcification level of GLUT-BP modified using GSH technology decreased by 80%, indicating that GSH can improve the anti-calcification performance of GLUT-BP. Compared with GLUT-GLY, GLUT + GSH yielded a higher cell proliferation rate and lower inflammatory response and calcification level. GSH can be used as a new type of anti-calcification agent in GLUT crosslinking biomaterials and is expected to expand the application domain for BHVs in the future.

Published
2022
Full Text
View/download PDF

8. Donsker's theorem for self-normalized partial sums processes

Author

Wu, Qiying, Szyszkowicz, Barbara, Csörgő, Miklós, Wu, Qiying, Szyszkowicz, Barbara, and Csörgő, Miklós

Abstract

Let X, X1, X2,... be a sequence of nondegenerate i.i.d. random variables with zero means. In this paper we show that a self-normalized version of Donsker's theorem holds only under the assumption that X belongs to the domain of attraction of the normal law. A thus resulting extension of the arc sine law is also discussed. We also establish that a weak invariance principle holds true for self-normalized, self-randomized partial sums processes of independent random variables that are assumed to be symmetric around mean zero, if and only if max1≤j≤n |Xj|/Vn → P 0, as n → ∞, where Vn2 = ∑j=1n Xj2.

Published
2003

Catalog

Books, media, physical & digital resources
See catalog results