bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on High-temperature Erosion Resistance of Precursor Ceramic Coatings
Authors: Yang Songjie , Wang Jinqing , Wang Guangxin , Tong Shiqi , Wang Zhimeng , Zhang Mu’an , Lin Zixiang , Feng Zhi , Xiong Yunhao 
Published: May 2020

Abstract
Given the high-temperature chlorine corrosion in the process of waste incinerators, polysilazane was used as the precursor, and glass powder and zirconia were added as fillers to prepare composite ceramic coating on TP347 substrate. In this paper, the effect of temperature on the formation of voids in the coating was studied by microscopic analysis. The high-temperature erosion wear resistance of the coating was also tested. The results show that the coating sintered at 500°C and 700°C has the best microstructure. To make the coating have higher hardness, the sintering temperature should be increased as much as possible at the allowable temperature of the substrate. The high-temperature erosion test shows that the erosion resistance of the coating is slightly lower than that of the substrate at room temperature and 400°C, but with the increase of temperature, the high-temperature erosion wear resistance is gradually enhanced, even exceeding the substrate, which is because the substrate is subjected to severe oxidation at high-temperatures, and its mechanical strength decreases with increasing temperature, while the coating is brittle at low temperatures, the erosion mechanism gradually becomes plastic as the temperature increases. The development of the shape erosion results in a much lower erosion wear at high-temperatures than the substrate.
Numerical Simulation and Structure Optimization of the Sudden Expansion and Contraction Flow In Fracturing Tubing
Authors: Chen Wenjun 
Published: May 2020

Abstract
For serioius erosion of the sudden expansion and contraction (SEC) in fracturing tubing, numerical simulation of SEC flow field is carried out using CFD and reynolds tress model. The velocity flow field and sand concentration in calculation region is achieved. The flowfields indicate that a large recirculation zone exists and sand concentration increases in the SEC, which causes the mixture of fluid and sand to impact upon the wall at the certain angle, and aroused erosion. Based on the obtained erosion reason, the structure optimization of the SEC are proceeded. Which improved the flow in SEC, reduced the erosion of SEC, and extended the service life of the tool.
Study on the influence of glass encapsulating on the hygroscopicity of high temperature phase change heat storage materials
Authors: Zhang Gaoqun , Deng Zhanfeng , Lu Yunkun , Hao Junjie , Ren Zhongkai , Chang Liang , Tan Hui , Cai Linhai , Xu Guizhi , Wang Tianhao 
Published: May 2020

Abstract
In this paper, Na2CO3-K2CO3 / MgO phase change composite was coated on the surface of glass by spray plating, which solved the problem of absorbing moisture and pulverizing of molten salt / MgO phase change thermal storage material in high humidity environment, and reduced the absorbing moisture and pulverizing rate from 31% to 19% without affecting the latent heat of phase change thermal storage material.
Efficient and convenient pretreatment to enhance waste activated sludge anaerobic hydrolysis by iron porphyrin biomimetic enzyme
Authors: Ruan Min , Zhang Jian , Niu Cheng-Gang , Huang Jing , Zhang Wei , Zeng Zhi-Hao , Zhou Kang , Li Xue 
Published: May 2020

Abstract
A novel biomimetic enzyme was applied in the pretreatment of waste activated sludge (WAS) for enhancing the hydrolysis properties. An iron porphyrin complex was efficiently synthesized and purified. In comparison with the blank test, iron porphyrin complex used as biomimetic enzyme could significantly improve the sludge disintegration. Hydrogen peroxide was not the main influencing factor. During the pretreatment process, concentrations of the ammonia nitrogen (NH4
+-N) and reducing sugar (RS) both almost increased, which indicated that the protein and polysaccharide in sludge were effectively decomposed. Results demonstrated that the optimum treatment time and temperature of this biomimetic enzyme was at 7 hours and 40 °C, respectively. The efficient and economical dosage of the biomimetic enzyme used in treatment sludge digestion was 1%. Under the optimal treatment condition, the SCOD/TCOD ratio, the rate of VSS reduction, the concentrations of NH4
+-N and RS reached the values of 65.3%, 38.4%, 215.9 mg/L and 65.9 mg/L, respectively. And the possible mechanism of iron porphyrin biomimetic enzyme to promote anaerobic hydrolysis of WAS had been proposed. Therefore, the application of biomimetic enzyme was a desirable method in the WAS pretreatment.
Non-Intrusive Load Monitoring based on Deep Neural Network and Differential Current
Authors: Ding Shaokang , Zhu Hongwei 
Published: May 2020

Abstract
In daily life, it is easy to obtain the power consumption information of a house by installing an energy meter at the entrance. The non-intrusive load monitoring method can decompose the power consumption and the working state of a specific load according to the aggregated information of the power inlet, and then help people to save electricity. Here, we present a novel and complete non-intrusive load identification algorithm based on deep neural network and differential current. The algorithm includes several modules for data preparation, event detection, feature extraction and load identification, and uses the BLUED dataset to test the feasibility of the proposed algorithm.
Innovative research on refrigeration technology of cold chain logistics
Authors: Han Zhi , Hua Linhui , Fang Yunrui , Ma Qingwen , Li Yan , Wang Jing Xing 
Published: May 2020

Abstract
With the increasing demand for frozen food in China, the need for better cold chain logistics is also becoming more urgent, promoting the development of related new technologies. This paper focuses on the research of ice slurry and intelligent temperature control technology in cold chain logistics, expounds on the research background, present situation and innovation research, and finally discusses the problems existing in cold chain logistics technology and corresponding solutions.
Distributed control system for catalysing the formation of artificial rainfall and snow using charged particles
Authors: Yang Z , Wu Q , Zhang M , Zheng W , Wang Y , Ai X 
Published: May 2020

Abstract
In order to solve the limitations and shortcomings of the traditional artificial rainfall technology, researchers all over the world are actively researching new artificial rainfall technologies. The charged particle catalytic artificial rainfall technology is one of the new artificial rainfall technologies. This method uses a charged particle generator set up in the wild to produce charged particles to catalyse rainfall. It is necessary to control all equipment in the experiment site remotely during the experiment. Thus, a control system needs to be implemented. There are many kinds of controlled equipment in this control system, such as high-voltage power supply, meteorological data acquisition devices, and various experimental auxiliary equipment. In this paper, we design and implement a comprehensive control system based on the characteristics of the charged particle catalysed artificial rainfall field experiment and the controlled equipment in the experiment site. The software interface connected to different types of equipment in the system is developed based on the large-scale experimental control system framework CFET, which can easily add equipment and view measurement data. The system is designed as a distributed system connected through a network, which can meet the needs of centralized control of multiple experimental sites.
Stability Analysis of Slope and Nearby TransmissionTowers in a Hub project Based on Flac3D
Authors: Wu Gu , Chen Shanxiong , Li Jian , Dai Zhangjun , Guo Jianhua 
Published: May 2020

Abstract
Aiming at the problem that the construction process of a water conservancy and hydropower project will affect the stability of the slope and its surrounding buildings, a numerical simulation method is used to carry out a numerical analysis of the displacement and stress diffusion of a junction engineering slope and its nearby transmission tower. The results show that: the deeper the excavation depth of the slope, the greater the rebound of the excavated surface; after excavation, the horizontal displacement of the facing surface of the slope under the support of the continuous wall is small, and the slope can maintain stability. The stress ratio method determines the distance between the excavation surface and the tower foundation, and the slope excavation can be carried out smoothly while ensuring the stability of the tower foundation.
Optimization of microelectrolysis process for treatment ofPNP wastewater by response surface methodology
Authors: Ban Fuchen , Zheng Xueting , Zhang Haoyu 
Published: May 2020

Abstract
The simulated p-nitrophenol (PNP) wastewater was treated by micro-electrolysis. The Box-Behnken experimental design model in response surface method was adopted with iron-carbon as a micro-electrolytic filler. Factors such as iron chip dosage, initial pH value of solution and reaction time were used as investigation indexes to study the influence of single factors and their interactions on the PNP wastewater removal rate. The final optimization results show that the experiment has a good removal rate of PNP, with only a small difference from the predicted value. It can be seen that the response surface method is feasible and suitable forthe process optimizion of p-nitrophenol wastewatertreatment by micro-electrolysis, which can be applied to engineering practice through further research and improvement.
Modelling and Application of Urban Drainage Based on Mike Urban Model
Authors: Liu Yin , Zhang Shuanghu , Su Huidong , Wang Dan , Gu Qihao 
Published: May 2020

Abstract
To alleviate the drainage pressure of urban pipeline network and reduce flood disaster, for the problem of non-convergence of design standards caused by inconsistency of design rainstorm duration between urban construction and water conservancy departments, this paper takesa residential district in Wenzhou City of Zhejiang Province as an example, andanalyze the relationship of recurrence periods between pipeline network drainage and waterlogging drainage under the regulation and storage capacity of rivers. Mike Urban was used to establish the drainage model of pipeline network to simulate the drainage situation when facing different river water levels at the outlet. The results are as follows: (1) when the recurrence period of pipeline design is 1 year, 3 years and 5 years respectively, the corresponding design rainstorm recurrence period of waterlogging drainage is about 5 years, 15-20 years, 20-30 years; (2) when meeting the high the water level at the outlet, the once a year rainfall of pipeline network encountering is equivalent to that of the pipeline network encountering the once a year to once in three years rainfall when the water level of the outlet is constant; (3) when the water level at the outlet is high, the once in three years rainfall of the pipeline network encountering is equivalent to that of the pipeline network encountering the once in three years to once in five years rainfall when the water level of the outlet is constant. Relevant research can provide reference for the design standard of pipeline network.
Groundwater Chemical Characteristics and Mining Potential Evaluation of the Quaternary in the Boxing Section of Shandong Province in the Lower Yellow River
Authors: Qin Peng , Yao Yingqiang , Liu Hongliang , Liang Zhihao 
Published: May 2020

Abstract
Boxing is located in the lower reaches of the Yellow River, all of which are covered by loose rock layers. Quaternary loose rock pore water mainly exists in aqueous media such as medium sand, medium coarse sand and fine sand, forming multiple layers of loose rock pore water. Water-containing structure is interlayer confined water development. From the southeast to the northwest, the aquifer formation gradually becomes thinner with the Quaternary overburden, the thickness of the single-layer sand layer gradually becomes thinner, and the water richness gradually weakened. The chemical types of groundwater are mainly HCO3 and HCO3·Cl. The pore water of loose rocks in the middle and deep layers is decreasing from south to north, and the content of Cl- is increasing. From west to east, the percentage of HCO3
-mg equivalent decreases gradually, and the percentage of Cl-mg equivalent increases gradually. The area enclosed by the groundwater level buried depth 40m is the controlled mining area.
Study on Hydrochemical Ion Characteristics in the Upper Reach of Tao River
Authors: Zhu Zhaoxia , Liu Jinqi , Cao Yuting 
Published: May 2020

Abstract
In this paper, the water in the upper reach of the Tao River was selected as the research object, the chemical characteristics of water environment in the upper reach of Tao River were studied and the water quality was evaluated based on the comparative analysis of the data of two monitoring stations for one year. The results show that the contents of HCO3-, SO4
2- and Ca2+are high in the upper reach of the Tao River, and the water quality belongs to alkaline medium salinity water, and the salinity increases with the increase of HCO3
-.
Test-loading Capacity Estimation of Slip-lined RCPs using a plastic approach
Authors: He Yuting , Fu Xinsha , Li Baijian 
Published: May 2020

Abstract
As many reinforced concrete pipes (RCPs) need to be rehabilitated due to the reconstruction, expansion of highways and structural damage. Inserting a corrugated steel pipe (CSP) into the existing RCP is an economical rehabilitation technique in China, the current research seeks to better understand the performance of the RCP rehabilitated with grouted CSP by using the reinforced concrete pipes (RCPs) as the host pipes. Experiments were conducted to (1) determine the test-loading capacity of five specimens; (2) understand the role of the liner (CSP); (3) understand the influence of eccentric rehabilitation on the test-loading capacity of the slip-lined pipe; (4) explore an approach to estimate the load-carrying capacity of the rehabilitated pipes. The test-loading capacity of an RCP rehabilitated with grouted CSP mainly depends on the RCP and the grout before the first peak value of the applied versus diameter change curve, CSP improved the maximum test-loading capacity and ductility of rehabilitated pipe. The test-loading capacity of an eccentric rehabilitated pipe was lower than that of a concentric rehabilitated pipe. The comparison of the calculated results showed that the plastic approach was reasonable for an RCP rehabilitated grout CSP. Meanwhile, an approach for analyzing a vertical eccentric rehabilitated pipe was proposed based on the plastic approach. The errors between the theoretical results and experimental results were basically less than 30%.
Influence of Dredge Reamer Operating Parameters on Pollutant Diffusion in Reservoir Dredging
Authors: Tang Deyi , Weng Haoxuan , Ye Xuewei 
Published: May 2020

Abstract
In order to study the influence of pollutant diffusion in the process of reservoir environmental dredging, this paper took the Tongji-bridge reservoir environmental dredging project as an example to analyze the relationship among the reamer rotating speed, traverse speed and slurry absorption concentration, and thus determined the optimal reamer operation parameters. Besides, this paper also monitored and analyzed the impact of pollutant diffusion dispersion in environmental dredging under the condition of the optimal reamer operating parameters. The results turn out: (1)When the reamer rotating speed and traverse speed were set to 15 r/min and 15∼20 m/min, the slurry absorption concentration was higher and the efficiency of dredging was optimal at the moment. (2)Under the optimal reamer operation parameters condition, the pollutant diffusion in the horizontal direction was obviously affected by water depths. The horizontal diffusion distance was about 20m when the water depth was 15m to 20m and the horizontal was increased to be 40m in the depth of 10m to 15m. (3)Under the optimal reamer operation parameters condition, the pollutant diffusion in the vertical direction was little affected by different water depths. The peak of pollutant concentration from high to low was 1.0m above the bottom, intermediate water depth and 1.0m below the water surface.
Study on the Mapping of Rainfall Contour in Pu’er, Yunnan
Authors: Ling Zhen , Ye Tengfei , Li Liang , Chen Fan 
Published: May 2020

Abstract
This paper briefly introduces the development of GIS and its application in hydrologic analysis. The paper interpolates the predicted rainfall of pu’er city in 2017 and draws the rainfall contour line by using kriging method, inverse distance weight method, obstacle spline function and geostatistics kriging method in the deterministic interpolation method. The results show that the interpolation results are of high accuracy and the interpolation errors are ranked from small to large as inverse distance weight interpolation < including obstacles interpolation < kriging interpolation. The inverse distance interpolation method can be used to draw the rainfall contour map of pu’er city.
Analysis of Heterogeneous Settlement of Connecting Sections of Embankment on Deep Soft Ground Based on PLAXIS
Authors: Tang Mingli , Sha Yonghua , Chai Yucheng , Zhang Yidi 
Published: May 2020

Abstract
The article analyzes the uneven settlement of the dam gate connection section of a reclamation project along the coast of eastern Zhejiang by PLAXIS finite element software, and compares and analyzes the in-situ monitoring results to understand the settlement development law of the dam gate connection section during operation and the location of the largest uneven settlement. Through analysis, after the sluice and the seawall are connected, the sluice settlement in the first year of the operation period is 5.51 mm, the settlement at the seawall is 105.30 mm, and the settlement difference is 99.79 mm; the cumulative settlement of the sluice is 9.01 mm, and the cumulative settlement at the seawall is 214.00 mm and the settlement difference is 204.99 mm. The uneven settlement of the connecting section of the dyke is mainly manifested at the junction of the empty box of the sluice and the riprap area of the seawall. When the uneven settlement is large, it will cause road cracks.
Slope Stability Analysis of Levee
Authors: Su Kai 
Published: May 2020

Abstract
The stability of levees can be affected during fluctuations in the water table. It is also possible for the flood caused by the typhoon to have an influence on the position of the water table in an earth levee. This paper compares the traditional methods methodology with a combination of transient seepage and slope stability analysis for analyzing rapid drawdown scenarios. Firstly the stability of a levee was calculated by conventional methods, then considering the effect of water level changes in the seepage area, the simulated transient pore-water pressure response from a finite element SEEP / W analysis was used for levee stability simulation. The Silt Solidified Piles have a positive effect on the stability of the levee. The result s provide design basis for the projects.
Study on Static and Dynamic Release Characteristics of River Sediment Pollutants
Authors: Xu Xiaolong , Zhan Xinjie , Yang Shouhua , Li Wenwei 
Published: May 2020

Abstract
As the main accumulation reservoir of various pollutants, the sediment plays a very important carrier role in the process of migration and transformation of pollutants. In this paper, based on the test device such as the annular water tank developed, the pollutant release characteristics of the river sediment under still water and moving water conditions were studied. The experimental results show that the content of pollutants nitrogen and phosphorus in river sediments in Nanjing is higher and the content of heavy metals is lower. The static release of pollutants in the sediment reached an equilibrium state in about 60 hours, and the release was faster in the early stage, and the release rate in the later stage gradually slowed down and tended to the equilibrium state. The velocity of river water flow directly affects the release characteristics of sediments. As the water flow velocity increases continuously, the sediments have three states: “not started”, “small amount of movement” and “general movement”. The ratio of pollutants (total nitrogen, total phosphorus, heavy metals) release to total pollutants in the sediment of the river under still water conditions is 0.96%, 0.09%, 0.01-0.06%, about 18.46%, 15.43%, and 0.05-4.55% under hydrodynamic conditions, which are much higher than the amount of pollutants released under hydrostatic conditions, and the release amount of heavy metals Zn and total phosphorus is more affected by hydrodynamic conditions than other pollutants.
Reservoir Construction Effect on the Fish Spawning Events
Authors: Zhang Lina , Wang Xu , Lei Xiaohui , Wang Hao , Wang Jia , Zhang Cheng , Li Ting 
Published: May 2020

Abstract
The process of rising flow and the water temperature are the important factors affecting the richness of fish seedlings after the construction of the reservoir. The changes of ecologically significant environmental flow components in the lower reaches of the Hongshui River before and after the construction of the reservoir are compared and analyzed. The study analyses and compares the changes of environmental flow components of spawning period before and after the spawning period in order to find out the distribution characteristics of environmental flow components of during the main spawning period before and after the construction of the reservoir. Using the ZSN to standardize the flow and water temperature, and then analyzing whether to cooperate between the flow and water temperature, and whether it is beneficial for fish spawning and reproduction of fish under the combined effect of the rising water and water temperature.
Evaluation of river connectivity based on TOPSIS model: Taking the North District Expansion Zone of Zhangjiagang Economic Development Zone in Jiangsu Province as an Example
Authors: Yu Genting , Xu Haibo , You Aiju , Hu Keke , Hu Lin 
Published: May 2020

Abstract
The river system connectivity has become an important indicator of current river health assessment. The proper connectivity of river systems has the functions of allocating resources, improving water and soil environment, and preventing floods and droughts. However, it will be affected by many factors. In this paper, take Zhangjiagang, Jiangsu Province as an example, the influence degree of the structural connectivity index (expressed as static indicators) and hydroconnectivity index (expressed as static and dynamic indicators) on the connectivity of river flow system is analyzed based on the TOPSIS model. The study finds that the order of influence of each index on the connectivity of water system in the study area is: The structure connectivity index (α、 γ) is greater than hydrological connectivity index (R

b
、 W

p
、 R

d
、 E

p
、 C

EN
), and the Closeness T

j
=(0.546, 0.546, 0.471, 0.479, 0.506, 0.519, 0.463). when analyzing the regional scale, we should consider the local conditions and consider comprehensively from the perspectives of structural connectivity and hydrological connectivity. The results of the study hope to provide theoretical basis for water system planning and management.