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Probe into Silty Sand Control Problem in Sanmenxia Water Project
Published 2007-01-01Get full text
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Design and application of an endotracheal tube fastener (一种新型气管套管系带的设计与应用)
Published 2023-12-01Get full text
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Prevalence of Budd-Chiari Syndrome during Pregnancy or Puerperium: A Systematic Review and Meta-Analysis
Published 2015-01-01Get full text
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Assessment of Climate Change Effects on Water Resources in the Yellow River Basin, China
Published 2015-01-01“…Reductions of 13.6%, 25.7%, and 24.6% could be expected in the regions of Hekouzhen to Longmen, Longmen to Sanmenxia, and Sanmenxia to Huayuankou, respectively. …”
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Spatial Difference Analysis of Water Resources Carrying Capacity in Henan Province
Published 2022-01-01“…Taking 18 cities in Henan Province as the research objects,this paper selects 16 indicators from the water resources-society-economy-ecology composite system.Utilizing the entropy weight TOPSIS method,it conducts the spatial difference analysis and comprehensive evaluation of water resources carrying capacity on 18 cities in Henan Province in 2018.The evaluation results show that the water resources carrying capacity of Henan Province in 2018 is weak.From the perspective of spatial difference,the water resources carrying capacity is the strongest in the southern region,followed by the western region,and the northern and eastern regions are the weakest.Cities with descending water resources carrying capacity are as follows: Xinyang, Zhumadian, Nanyang, Zhengzhou, Sanmenxia, Luoyang, Pingdingshan, Shangqiu, Luohe, Jiyuan, Xuchang, Zhoukou, Anyang, Kaifeng,Hebi,Xinxiang,Jiaozuo,Puyang.The water resources subsystem and the economic subsystem have great influences on water resources carrying capacity in different cities.GDP,water production modulus,and precipitation affect the water resources carrying capacity most in 2018.…”
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Instantaneous Amplitude-Frequency Feature Extraction for Rotor Fault Based on BEMD and Hilbert Transform
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Analysis on the Impact of Water Intake and Consumption on the Runoff of Mainstream of the Yellow River
Published 2021-01-01“…Water intake and water consumption have an important impact on the runoff of the Yellow River Basin.Based on the measured runoff data from the main control stations of the mainstream of the Yellow River and its water resources bulletin data,this paper preliminarily analyzes the runoff changes of the main sections of the upper and lower reaches of the mainstream and the impact of water intake and consumption on the mainstream runoff.The results show that:①The annual runoff measured at all three stations,namely Lanzhou (1919—2018),Huayuankou (1919—2018),and Lijin (1950—2018),shows a decreasing trend,with non-significant decrease in Lanzhou station in the upper reaches,but significant decrease in the two stations in the middle and lower reaches.②During the period of 1998—2019,the annual runoff of the 11 main hydrological stations on the mainstream of the Yellow River shows a consistent increasing trend,which may results from the increase in average precipitation in the basin.③The changes in water intake and total water consumption in the basin from 1998 to 2019 show an increasing trend,indicating that the water intake along the Yellow River increases steadily.The influence of water intake and consumption on the runoff changes in the section above Lanzhou is small,with the contribution less than 20%.In the middle and lower reaches,the impact of water intake and consumption on the reservoir storage is big,especially in the Longmen-Sanmenxia subarea,where the proportion of restored surface runoff to the natural river runoff reaches 55.4%.…”
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Calibration of miniature air quality detector monitoring data with PCA–RVM–NAR combination model
Published 2022-06-01Get full text
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