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Flume experiments to study fine-grain migration and its impact on slope stability

Journal of Mountain Science 2024年第10期21卷 3552-3566页

作者： wang baoliang wang Quanwei LI Yong YAO Zhenguo wang Hongfei Yellow River Engineering Consulting Co.Ltd. Zhengzhou 450003China Key Laboratory of Water Management and Water Security for Yellow River Basin Ministry of Water Resources(under construction)Zhengzhou 450003China Institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu 610041China Key Laboratory of mountain Hazards and Surface Process Chinese Academy of SciencesChengdu 610041China

Fine grains migration is a primary cause of landslides and debris *** study investigates the effect of fine-grain migration on slope failure through flume experiments,focusing on the spatiotemporal characteristics and mechanisms of slope stability.A series of artificial rainfall flume experiments with varying rainfall intensities and slopes were conducted using soil samples collected from Wei Jia *** experiments monitored pore-water pressure,grain migration,and failure ***-size distribution parameters(μand Dc)were analyzed to understand the migration path and accumulation of fine *** experiments reveal that fine-grain migration significantly alters soil structure,leading to random blockage and interconnection of internal pore *** changes result in fluctuating pore-water pressure distributions and uneven fine-grain accumulation,critical factors in slope *** failures occur randomly and intermittently,influenced by fine-grain content in runoff and resulting pore-water pressure *** study highlights that fine-grain migration plays a vital role in slope stability,with significant implications for predicting and mitigating slope *** stochastic nature of fine-grain migration and its impact on soil properties should be incorporated into predictive models to enhance their accuracy and reliability.

关键词： Fine-grain migration Slope stability Pore-water pressure Artificial rainfall Soil structure Flume experiments

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Measurement of solid concentration using Terahertz technique

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仪器仪表学报 2007年第11期28卷 1951-1955页

作者： Liu Yi＇an Huang Zhiyao Ji Haifeng wang baoliang Li Haiqing State Key Laboratory of Industrial Control Technology Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China

Terahertz(THz) technique is a new measurement technique that has emerged in recent *** the measurement of solid concentration,a radiation attenuation method and a phase delay method were developed,which are based on the Beer-Lambert *** work was carried out on a terahertz time-domain spectroscopy system(THz-TDS).Results obtained verify that the terahertz technique may provide a possible new solution to the problem of solid concentration measurement and the two proposed measurement methods are *** results also indicate that the phase delay method is more accurate than the radiation attenuation method and the size of the particles affects the measurement results of both methods.

关键词：测量方法固体太拉赫技术浓度

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Void fraction measurement of bubble and slug flow in a small channel using the multivision technique

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Particuology 2017年第4期15卷 11-16页

作者： Huajun Li Xiaohu Zheng Haifeng Ji Zhiyao Huang baoliang wang Haiqing Li State Key Laboratory of Industrial Control Technology College of Control Science and Engineering Zhejiang University Hangzhou 310027 China

Using the multivision technique, a new void fraction measurement method was developed for bubble and slug flow in a small channel. The multivision system was developed to obtain images of the two-phase flow in two perpendicular directions. The obtained images were processed--using image segmentation, image subtraction, Canny edge detection, binarization, and hole filling-to extract the phase boundaries and information about the bubble or slug parameters, With the extracted information, a new void fraction measurement model was developed and used to determine the void fraction of the two-phase flow. The proposed method was validated experimentally in horizontal and vertical channels with different inner diameters of 2.1, 2.9, and 4.0 mm, The proposed method of measuring the void fraction has better performance than the methods that use images acquired in only one direction, with a maximum absolute difference between the measured and reference values of less than 6%.

关键词： Gas-liquid two-phase flow Void fraction Bubble flow Slug flow Multivision technique

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Measurement of bubble velocity using Capacitively Coupled Contactless Conductivity Detection(C^4D)technique

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Particuology 2013年第2期11卷 198-203页

作者： baoliang wang Ying Zhou Haifeng Ji Zhiyao Huang Haiqing Li State Key Laboratory of Industrial Control Technology Department of Control Science and EngineeringZhejing University

The feasibility of applying Capacitively Coupled Contactless Conductivity Detection （C4D） technique to measurement of bubble velocity in gas-liquid two-phase flow in millimeter-scale pipe is investigated. And, a new method, which combines the C4D technique and the principle of cross-correlation velocity measurement, is proposed for the measurement of bubble velocity. This research includes two parts. First, based on the principle of C4 D, a new five-electrode C4D sensor is developed. Then, with two conductivity signals obtained by the C4D sensor, the velocity measurement of bubble is implemented according to the principle of cross-correlation. The research results indicate that the C4D technique is highly effective and anticipates a broad potential in the field of two-phase flow. Experimental results show that the five-electrode C4D sensor is suitable for measuring the velocity of single bubbles with a relative error of less than 5%.

关键词： Bubble Velocity measurement Capacitively Coupled Contactless Conductivity Detection Cross-correlation velocity measurement

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Experimental study on the applicability of Westergaard＇s formula for calculating earthquake-induced hydrodynamic pressure in small lake

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Journal of Modern Transportation 2018年第1期26卷 49-56页

作者： Yiliang Zhou Lingkan Yao Hongzhou Ai baoliang wang School of Civil Engineering Southwest Jiaotong UniversityChengdu 610031 Sichuan China MOE Key Laboratory of High-speed Railway Engineering Southwest Jiaotong University Chengdu 610031 SichuanChina National Engineering Laboratory for Technology of Geological Disaster Prevention in Land Transportation Chengdu 610031 China

Moraine-dammed lake outbursts usually threaten highways, railways, and key facilities in alpine regions. The varying amplitudes and distribution of hydrodynamic pressures significantly affect the stability of the dam. We utilize a shaking table to investigate the development of hydrodynamic pressure caused by different sinusoidal waves and seismic Wolong wave. A series of shaking table tests indicate that the hydrodynamic pressure varia- tion significantly follows seismic acceleration wave motion. The maximum hydrodynamic pressures calculated by Westergaard＇s equation are compared with the experi- mental values under different waves. It is shown that the Westergaard＇s values are lower than the experimental ones under the sinusoidal waves. However, the Westergaard＇s method is able to predict the earthquake-induced hydro- dynamic pressure caused by Wolong wave in small lake with desirable accuracy.

关键词： Moraine dam Hydrodynamic pressure Shaking table Westergaard Small lake

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Runoff change in the Yellow River Basin of China from 1960 to 2020 and its driving factors

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Journal of Arid Land 2024年第2期16卷 168-194页

作者： wang baoliang wang Hongxiang JIAO Xuyang HUANG Lintong CHEN Hao GUO Wenxian School of Water Conservancy North China University of Water Resources and Electric PowerZhengzhou 450046China College of Water Resources North China University of Water Resources and Electric PowerZhengzhou 450046China

Analysing runoff changes and how these are affected by climate change and human activities is deemed crucial to elucidate the ecological and hydrological response mechanisms of *** Indicators of Hydrologic Alteration and the Range of Variability Approach(IHA-RVA)method,as well as the ecological indicator method,were employed to quantitatively assess the degree of hydrologic change and ecological response processes in the Yellow River Basin from 1960 to *** Budyko's water heat coupling balance theory,the relative contributions of various driving factors(such as precipitation,potential evapotranspiration,and underlying surface)to runoff changes in the Yellow River Basin were quantitatively *** results show that the annual average runoff and precipitation in the Yellow River Basin had a downwards trend,whereas the potential evapotranspiration exhibited an upwards trend from 1960 to *** approximately 1985,it was reported that the hydrological regime of the main stream underwent an abrupt *** degree of hydrological change was observed to gradually increase from upstream to downstream,with a range of 34.00%-54.00%,all of which are moderate ***,significant differences have been noted among different ecological indicators,with a fluctuation index of 90.00%at the outlet of downstream hydrological stations,reaching a high level of *** the mutation,the biodiversity index of flow in the middle and lower reaches of the Yellow River was generally lower than that in the base *** research results also indicate that the driving factor for runoff changes in the upper reach of the Yellow River Basin is mainly precipitation,with a contribution rate of 39.31%-54.70%.Moreover,the driving factor for runoff changes in the middle and lower reaches is mainly human activities,having a contribution rate of 63.70%-84.37%.These results can serve as a basis to strengthen the protection and restoration efforts in the Yellow River Basin

关键词： Budyko theory hydrological regime attribution analysis ecological responses Yellow River climate change human activity runoff

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王宝亮教授治疗低钾型周期性麻痹的临床经验

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中国中医药现代远程教育 2017年第11期15卷 83-84页

作者：田丹珂王宝亮河南中医药大学郑州450008 河南中医药大学第一附属医院神经内科郑州450000

周期性麻痹又称为周期性瘫痪,是一组以反复发作的骨骼肌迟缓性瘫痪为特征的肌病,分为低钾型、高钾型、正常钾型,低钾型周期性瘫痪为临床上最常见的类型。现代医学治疗低血钾型周期性麻痹以补充氯化钾及对症治疗为主,虽可迅速缓解临床症... 详细信息

周期性麻痹又称为周期性瘫痪,是一组以反复发作的骨骼肌迟缓性瘫痪为特征的肌病,分为低钾型、高钾型、正常钾型,低钾型周期性瘫痪为临床上最常见的类型。现代医学治疗低血钾型周期性麻痹以补充氯化钾及对症治疗为主,虽可迅速缓解临床症状,但往往易反复发作,长期疗效欠佳,严重影响患者的学习、工作及生活,而吾师王宝亮教授在现代医学疗法的基础上运用中医药辨证施治本病,疗效明显持久。

关键词：王宝亮周期性麻痹辨证论治痿证

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Red and Blue Lights Significantly Affect Photosynthetic Properties and Ultrastructure of Mesophyll Cells in Senescing Grape Leaves

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Horticultural Plant Journal 2016年第2期2卷 82-90页

作者： wang Shuai wang Xiaodi SHI Xiangbin wang baoliang ZHENG Xiaocui wang Haibo LIU Fengzhi Fruit Research Institute Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(Germplasm Resources Utilization) Ministry of Agriculture

Light quality significantly affects photosynthetic efficiency in plants. The mechanisms for how light quality affects photosynthesis in grape is poorly understood. Therefore, to investigate the effects of different light qualities on chloroplast ultrastructure and photosynthesis efficiency, two grape cultivars ‘Italia'(slower speed of leaf senescence) and ‘Centennial Seedless'(faster speed of leaf senescence) grown under protected and delayed conditions were used. The three treatments, replicated three times, were control(no supplemental lighting), red light and blue light. Chlorophyll content, net photosynthetic rate, and the ratio of F_v/F_m significantly increased in red light relative to the control. The opposite trend was observed in blue light in the early phase of leaf senescence. At later stages, physiological indexes were gradually higher than that of control, resulting in a delay in leaf senescence. Compared to the control, red and blue light both significantly increased the chlorophyll a/b ratio. Electron microscopy showed that blue light caused severe damage to the fine structure of chloroplasts at early stages of leaf senescence, but effects at later stages of leaf senescence became less severe compared to the control. The degradation of chloroplast ultrastructure was apparently delayed in red light throughout the experimental timeframe compared to other treatments. In this experiment, ‘Italia' showed higher chlorophyll content, net photosynthetic rate, ratios of F_v/F_m, chlorophyll a/b and better preserved chloroplast ultrastructure relative to ‘Centennial Seedless', resulting in a slower rate of leaf senescence.

关键词： grape leaf senescence red and blue light chloroplast ultrastructure electron microscopy

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Spatio-temporal Evolution and Flow of Water Provision Service Balance in Jinghe River Basin

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Journal of Resources and Ecology 2022年第5期13卷 797-812页

作者： GUAN Mengluan ZHANG Qiang wang baoliang ZHANG Huiyuan Chinese Research Academy of Environmental Sciences Beijing 100012China Policy Research Center for Environment and Economy Ministry of Ecology and Environment of the People’s Republic of ChinaBeijing 100029China

Quantifying the whole process of ecosystem services from generation through transfer to use,and analyzing the balance between the supply and demand of regional ecosystem services are of great significance for formulating regional sustainable development strategies,realizing regional ecosystem management,and effective resource *** on the SWAT model,InVEST model,ArcGIS,and other software,this study analyzed the supply-demand balance of water provision services in Jinghe River Basin,a typical region located in the Loess Plateau,using multi-source *** research then analyzed the spatial-temporal distribution pattern and spatial matching characteristics of the supply and demand of water provision services in Jinghe River Basin from 2000 to *** this basis,a spatial flow model of water provision service was constructed,the flow rules(flow paths)of the water provision service were explored at the subwatershed scale,and the spatial scope of the supply area and benefit area were *** results show that:(1)Water resource supply and demand in the Jinghe River basin both showed increasing trends from 2000 to 2015.(2)The supply-demand balance of water resources was generally up to the standard,however,there were significant differences between urban and rural *** supply-demand balances of the central urban areas of each county were relatively low,and even exceeded the supply in the lower reaches of the Jingyang River,such as Gaoling County,Qindu District,and Jingyang *** rural areas,due to the small population and industrial distribution,coupled with a better ecological environmental base,the supply-demand balance was relatively high,such as Pengyang County,Lingtai County,Huachi County,Huanxian County,Ningxian County,and Zhenyuan County.(3)From 2000 to 2015,the spatial matching pattern of supply and demand in the Jinghe River Basin showed a trend of decline with *** 2015,the supply-demand ratios of more than 60%of the subwaters

关键词： ecosystem services water provision services supply-demand balance flow Loess Plateau

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基于知识图谱的双端邻居信息融合推荐算法

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计算机科学与探索 2022年第6期16卷 1354-1361页

作者：王宝亮潘文采天津大学信息与网络中心天津300072 天津大学电气自动化与信息工程学院天津300072

针对一些基于知识图谱的推荐算法仅聚合一端邻居而无法有效确定实体与用户之间关系的问题,提出了一种基于知识图谱的双端邻居聚合推荐算法,算法通过探究知识图谱的内在联系以发掘用户和物品之间的潜在关系。在用户端,提出了一种聚合用... 详细信息

针对一些基于知识图谱的推荐算法仅聚合一端邻居而无法有效确定实体与用户之间关系的问题,提出了一种基于知识图谱的双端邻居聚合推荐算法,算法通过探究知识图谱的内在联系以发掘用户和物品之间的潜在关系。在用户端,提出了一种聚合用户邻居信息的方法,在知识图谱的关系空间下,使用知识图谱来传播和提取用户的潜在兴趣,通过迭代将潜在兴趣注入具有注意偏差的用户特征中生成用户嵌入表示向量;在物品端,将融合了用户邻居信息的用户向量送入KGCN模型,并在聚合物品和其邻居信息时,采用新的聚合方式,生成物品嵌入表示向量。最后,将得到的用户和物品向量送入预测环节,通过向量的内积运算并归一化得到用户和物品的关联分数,然后在训练集中进行训练,优化参数。在两个公开数据集上进行对比实验,在Book-Crossing数据集上,相较于最优基线,AUC和ACC分别提升了1.72%和4.24%;在***数据集上,AUC和ACC分别提升了1.07%和1.14%,从而验证在聚合两端邻居信息后,算法的有效性得到了提升。

关键词：推荐算法知识图谱邻居聚合

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