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624 results on '"Jiang, Mengmeng"'

1. Saturated soil hydraulic conductivity and its determinants in grassland with varying levels of desertification in Northwest Liaoning Province

Author

JIANG Mengmeng, LUO Genhua, LYU Gang, and FENG Menglong

Subjects
northwest liaoning, soil infiltration performance, desertification degree, saturated water conductivity, Agriculture (General), S1-972, Irrigation engineering. Reclamation of wasteland. Drainage, TC801-978
Abstract

【Background and Objective】 The arid and semi-arid regions in Northwest Liaoning Province are characterized by low precipitation and high evaporation, leading to desertification, soil erosion and degradation. This paper presents the results of an experimental study on variation and determinants of saturated hydraulic conductivity of soils in these regions. 【Method】 This study was conducted in grasslands exhibiting various levels of desertification. We measured the saturated hydraulic conductivity of soils at different depths, along with various influencing factors across different regions. 【Result】 The impact of desertification on soil hydraulic conductivity varied with soil depth. In the top 0-30 cm soil, the saturated hydraulic conductivity of soil in non-deserted, slightly deserted, moderately deserted, and severely deserted regions was 2.46 mm/min, 5.57 mm/min, 8.72 mm/min and 9.04 mm/min, respectively. The impact of desertification on hydraulic conductivity of soil in the 30-70 cm layer is similar, with the saturated soil hydraulic conductivity in the non-deserted regions being 30% of that in the severely deserted region. In the 70-100 cm layer, the saturated soil hydraulic conductivity in different regions was ranked in the order of non-deserted < slightly deserted < severely deserted < moderately deserted, with the saturated soil hydraulic conductivity in the non-deserted region being 40% of that in the moderately deserted region. Saturated soil hydraulic conductivity was negatively correlated with soil phosphatase and positively correlated with sand content, bulk density, and porosity of non-capillary pores. Soil saturated hydraulic conductivity linearly decreases with soil desertification in y=13.13x-31.80, which could explain 98.70% of the variation in the hydraulic conductivity. It was also found that, regardless of the level of desertification, soil hydraulic conductivity tended to increase with soil depth and vegetation coverage. 【Conclusions】 The saturated hydraulic conductivity of soils in the grasslands in the northern Liaoning Province varies with both soil depth and the degree of desertification. Key factors influencing this variation include sand content, phosphatase content, bulk soil density, and presence of large non-capillary pores.

Published
2024
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4. Mining Risk Rules in Insurance Business Data Based on SPRINT Classification Algorithm

Author

Wang, Wenqian, Jiang, MengMeng, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, 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, Hirche, Sandra, 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, Tan, Kay Chen, Series Editor, Pei, Yan, editor, Ma, Hao Shang, editor, Chan, Yu-Wei, editor, and Jeong, Hwa-Young, editor

Published
2024
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7. Metformin decelerates aging clock in male monkeys

Author

Yang, Yuanhan, Lu, Xiaoyong, Liu, Ning, Ma, Shuai, Zhang, Hui, Zhang, Zhiyi, Yang, Kuan, Jiang, Mengmeng, Zheng, Zikai, Qiao, Yicheng, Hu, Qinchao, Huang, Ying, Zhang, Yiyuan, Xiong, Muzhao, Liu, Lixiao, Jiang, Xiaoyu, Reddy, Pradeep, Dong, Xueda, Xu, Fanshu, Wang, Qiaoran, Zhao, Qian, Lei, Jinghui, Sun, Shuhui, Jing, Ying, Li, Jingyi, Cai, Yusheng, Fan, Yanling, Yan, Kaowen, Jing, Yaobin, Haghani, Amin, Xing, Mengen, Zhang, Xuan, Zhu, Guodong, Song, Weihong, Horvath, Steve, Rodriguez Esteban, Concepcion, Song, Moshi, Wang, Si, Zhao, Guoguang, Li, Wei, Izpisua Belmonte, Juan Carlos, Qu, Jing, Zhang, Weiqi, and Liu, Guang-Hui

Published
2024
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12. Study of quality changes in high moisture wheat after hot air drying

Author

FAN Mengke, CHEN Pengxiao, LIU Ye, ZHU Wenxue, JIANG Mengmeng, ZHANG Yurong, WANG Xiaowan, and WU Jianzhang

Subjects
high moisture wheat, hot air drying, drying efficiency, Food processing and manufacture, TP368-456
Abstract

Objective: To study the effects of different drying processes on the quality of high moisture wheat. Methods: Investigates the changes of wheat quality under different drying processes in three dimensions: appearance quality, nutritional quality and processing quality. Three indicators, namely colour, wet gluten content and drying rate, were selected as response values and combined with response surface analysis to predict the optimal drying process for high moisture wheat. Results: Drying temperature was the main influencing factor. As the temperature increased, the colour of the wheat deepened, the crude protein content decreased, the wet gluten content decreased, the water absorption of the dough increased, the formation time increased, the stabilization time increased, the degree of weakness decreased, the flour quality index under increased, The wheat skin changed from a small raised rectangle to a small sunken pit, and the internal starch granules changed from a smooth round or oval shape to a rough irregular shape. The optimal processing conditions of the response surface were drying temperature 45 ℃, wind speed 0.94 m/s, tempering time 30.4 min. The colour L* 58.811, the wet gluten content of 27.292%, the drying rate of 8.146×10-2%/min and the comprehensive score of 0.613 were obtained with this parameter. Conclusion: The study proved that the optimization of the hot air drying process improved the post-drying quality of wheat to some extent on the basis of ensuring the drying efficiency.

Published
2024
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15. Industrial Pumps Anomaly Detection and Semi-supervised Anomalies Labeling Through a Cascaded Clustering Approach

Author

Duan, Qiang, Jiang, Zhihang, Li, Wei, Jiang, Kai, Jin, Weiduo, Yu, Ling, Jiang, Mengmeng, Zhao, Jing, Li, Rui, Zhang, Hui, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Yang, Xin-She, editor, Sherratt, Simon, editor, Dey, Nilanjan, editor, and Joshi, Amit, editor

Published
2023
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22. Integrable symplectic maps associated with discrete Korteweg-de Vries-type equations

Author

Xu, Xiaoxue, Jiang, Mengmeng, and Nijhoff, Frank W

Subjects
Mathematical Physics, Nonlinear Sciences - Exactly Solvable and Integrable Systems
Abstract

In this paper we present novel integrable symplectic maps, associated with ordinary difference equations, and show how they determine, in a remarkably diverse manner, the integrability, including Lax pairs and the explicit solutions, for integrable partial difference equations which are the discrete counterparts of integrable partial differential equations of Korteweg-de Vries-type (KdV-type). As a consequence it is demonstrated that several distinct Hamiltonian systems lead to one and the same difference equation by means of the Liouville integrability framework. Thus, these integrable symplectic maps may provide an efficient tool for characterizing, and determining the integrability of, partial difference equations.

Published
2020

32. Deep learning of cross-species single-cell landscapes identifies conserved regulatory programs underlying cell types

Author

Li, Jiaqi, Wang, Jingjing, Zhang, Peijing, Wang, Renying, Mei, Yuqing, Sun, Zhongyi, Fei, Lijiang, Jiang, Mengmeng, Ma, Lifeng, E, Weigao, Chen, Haide, Wang, Xinru, Fu, Yuting, Wu, Hanyu, Liu, Daiyuan, Wang, Xueyi, Li, Jingyu, Guo, Qile, Liao, Yuan, Yu, Chengxuan, Jia, Danmei, Wu, Jian, He, Shibo, Liu, Huanju, Ma, Jun, Lei, Kai, Chen, Jiming, Han, Xiaoping, and Guo, Guoji

Published
2022
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44. Output feedback stabilization of stochastic high‐order nonlinear time‐delay systems with unknown output function.

Author

Dong, Wei and Jiang, Mengmeng

Subjects
*NONLINEAR systems, *STOCHASTIC systems, *LYAPUNOV stability, *STABILITY theory, *SYSTEMS theory
Abstract

This article considers the problem of output feedback stabilization for a class of stochastic high‐order nonlinear time‐delay systems with unknown output function. For stochastic high‐order nonlinear time‐delay systems, based on the Lyapunov stability theorem, by combining the addition of one power integrator and homogeneous domination method, the maximal open sector Δ$\Delta$ of output function is given. As long as output function belongs to any closed sector included in Δ$\Delta$, an output feedback controller can be developed to guarantee the closed‐loop system globally asymptotically stable in probability. [ABSTRACT FROM AUTHOR]

Published
2024
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