bluuebunny/crossref_metadata_2025_split huggingface dataset:
The degradation of molybdenum disulfide nanomaterial via activated persulfate and radical species
Authors: Xu Dongfang , Tan Huiwen , Wei Yongpei 
Published: July 2020

Abstract
Chemical stability of molybdenum disulfide (MoS2) is important for its application in catalysis fields, and related research is scarce. Herein, two types of catalysis system, activated persulfate (PS) and radical species (generated from g-C3N4 photocatalyst or decomposed from H2O2) were simulated to study the degradation of MoS2 in catalysis process. We found that MoS2 degraded partly via both of activated PS and radical species. Graphene activator of PS showed more significant degradation to MoS2 than Fe activators of PS under dark, which may due to its higher surface area and more active sites on the surface. Light irradiation enhanced the degradation of MoS2 in activated PS system with Fe activators, increased activation of PS under light irradiation. Radical species decomposed from H2O2 degraded the MoS2 under both dark and light. g-C3N4 photocatalyst could degrade MoS2 by generating radical species. Overall, these results showed that the application of MoS2 should be concerned due to its degradation in catalysis process.
Analysis of Offshore Oil Spill Pollution Treatment Technology
Authors: Li Kai , Yu Hongliang , Yan Jin , Liao Jianbin 
Published: July 2020

Abstract
In recent years, human demand for petroleum resources has been increasing, the exploitation, transportation, and use of offshore oil have also led to frequent offshore oil spills pollution accidents. Once an oil spills accident at sea occurs, it will not only cause waste of petroleum resources and produce economic loss, but also cause great damage to the marine ecological environment. This article reviews the hazards of offshore oil spills pollution, the ways of oil spills, the physical, chemical, and biological treatment technologies of oil spills and gives the prospect.
Study on the Population and Effect of Fish Passing Through the Fishway in Cao’e River Gate
Authors: Hui Yin , Fuqing Bai , Xinchuang Cheng , Xinsheng Che , Yueshu Sun , Rong Wang 
Published: July 2020

Abstract
Fishway is one of the important ways to solve that gate dam obstructs fish migration. Through the monitoring and sampling of the right bank fishway of the Cao’e River Gate during May to November 2019, a total of 27 species of nektonic organisms were captured, totaling 2,926, belonging to 10 orders and 15 families, including mostly coilia ectenes, secondly minnow and others (crucian carp, bighead carp, silver carp, carp, and lateolabrax maculatus, etc.); the average species diversity index of nektonic organisms is 2.278, the average species richness index is 1.704, the average uniformity is 1.12, and the average dominance is 0.728. The data show that the effect of fish passing through fishways in different seasons, hydrological conditions, and weather conditions is very different. In general, the number of fish passing in spring and summer is much higher than that in autumn and winter. Of which, the number (individuals accounted for 91.41% of all) monitored in May, June, and July far exceeded that in other months. From May, the species and number of fish passing gradually increased, and by July, they reached their peak. Comparing the historical monitoring data in this region and the effects of fish passing through other typical fishways at home and abroad, the Cao’e River fishway provides a channel for the exchange of upstream and downstream fish of the gate, becoming an important channel to resolve the migration of blocked fish. It is recommended to strengthen the long-term monitoring and study of fishway, providing scientific basis for the collection of fish fry by opening the sluice gate, and also laying the foundation for further evaluation of the fish-passing effect of the sluice dam project in the Yangtze River Delta.
Application of Dynamic Sarma Method to Stability Analysis of Rock Slope
Authors: Zijie Wang 
Published: July 2020

Abstract
In this paper, the shortcoming of Sarma method, a slop safety factor calculation method based on pseudo-static method, are improved by adding real seismic force, calculating acceleration amplification coefficient of each block by using numerical simulation and drawing the time-history of safety factor by using matlab software. The dynamic Sarma method is proposed. Through the calculation of an example, the rationality of the calculation result of slope safety factor by using dynamic Sarma method is verified.
Current Status of Technology and Standards of Sludge Recycling in China
Authors: Xiaoxin Zhang , Jin Huang , Ling Lin , Sinan Zhang 
Published: July 2020

Abstract
This paper sorts and analyzes current states of technologies and standards, existing problems and demands of the sludge recycling industry in China, in order to further promote the establishment of sludge recycling standard system in China, standardize key technologies, devices and processes of efficient sludge recycling, and promote the application and utilization of advanced technical equipment, thus providing solid technical support and guarantee for the enhancement of overall performance level and pollutant up-to-standard emission of sludge recycling industry in China.
Application of Mathematical Model in Water Conservancy Project at Confluence Section
Authors: Deng Chun-yan , Xia Jun-qiang , Ge Hua , Long Rui 
Published: July 2020

Abstract
The new construction of the wading project at the confluence section, where the flow condition is rather complex, has definitely to take more influencing factors in consideration. In order to investigate quantitatively the effect of secondary flows on the transport of flow and sediment in a sharply curved channel, the landscape project at the Yibin reach was taken as an example, and the 2D Mathematical Model was used to simulate the distributions of flow factors. As the predicted project is located at the confluence of the Three Rivers, the left banks of the Minjiang River and the Yangtze River, the complexity of the inflow and outflow conditions was considered during the study, and different research schemes were compared. Result of this research can be valuable reference for similar projects.
Research and Application of Green Filling MiningTechnology for Short Wall Mining in Aging Mine
Authors: Pengde Sang 
Published: July 2020

Abstract
In view of the problems of “three lower” coal pressure in Dongping Coal Industry and the difficulty in moving villages and the exhaustion of mine resources, it is necessary to explore new mining techniques to realize the sustainable mining of existing coal resources. By means of theoretical analysis, laboratory test and field measurement, the paper puts forward the continuous green filling mining technology. The working face layout, filling material ratio, branch and lane parameters and surface deformation law were studied. This method has been used in the experimental mining of No. 15 coal seam of Dongping Coal Industry, and has obtained great economic and environmental benefits.
Influence of Moisture in Flue Gas after Wet Desulfurization on the Measurement of SO2 Concentration
Authors: Liu Y , Shu Y , Zhang C , Long H Y , Deng S , Wang F , Tian G 
Published: July 2020

Abstract
Wet desulfurization is dominant in China’s coal power industry as flue gas discharged from wet desulfurization is over-saturated, includes lots of moisture, and can bring huge interference to the measurement of SO2. When using existing SO2 measuring methods, especially wet desulfurization technology aiming at ultra-low emissions, it is necessary to take into account the impact of water in flue gas. The pH value of condensate water of flue gas after desulfurization with limestone gypsum wet desulfurization is 2, lower than that of desulfurizing slurry, indicating that some SO2 has been dissolved in the water carried by flue gas after desulfurization. In order to avoid the interference of water, infrared online continuous emission monitoring system (CEMS) is equipped with a water removal device. When a conventional condensate water removal method is applied, condensate water will dissolve SO2 and then lead to the relatively low concentration of SO2 in the flue gas measured. When a proper water removal method is adopted, it can effectively avoid the measuring error as a result of SO2 dissolved in condensate water.
Bioremediation of Crude-Oil Polluted Soil Using Immobilized Microbes
Authors: Zuo Lei 
Published: July 2020

Abstract
Microbial bioremediation technologies in the past usually cannot degrade the corrosive pollutants in the polluted soil. These microbial bioremediation technologies are often impacted by many environmental factors, and therefore the remediation effect of these bioremediation technologies on the polluted soil is reduced. With the advance of science and technology, more advanced immobilized microbial remediation technologies are developed. These technologies have been growing rapidly due to their advantages over the old microbial remediation technologies. This paper investigates and researches the immobilized microbial and other remediation technologies, and the results show in the process of remediation of polluted soil using immobilized microbes, that the activity characterization of enzyme and the number of bacteria are both relatively higher. Moreover, this paper provides the detailed statistics on various factors that impact the effect in remediating oil polluted soil using immobilized microbial remediation.
Simulation Analysis of Safe Evacuation in a Railway Tunnel Emergency Rescue Station
Authors: Qi Li , Xiongzhi Cao , Xiaoling Xiong , Chang Yang 
Published: July 2020

Abstract
This paper in order to improve the design parameters of evacuation passageway of emergency rescue stations in long railway tunnel based on the principle of the minimum evacuation time and best evacuation route, and study the impact of evacuation speed on evacuation time due to personnel panic. The evacuation time in different combinations of parameters of spacing and width of evacuation passageway and width of platform is calculated by Pathfinder simulation software considering characteristics, speed and path of evacuation. The simulation takes the fire accident of 18 marshalled passenger trains in an emergency rescue station in tunnel as an example. The study results show that: 1) Due to the panic mentality, the evacuation speed will increase, so the population flow rate will increase and the evacuation time will be shorter. 2) The optimal distance for the evacuation passageway of the emergency rescue station is 50m, the optimal width is 3.5m, and the platform width should not be less than 2.5m.
Effect of turbulence on aerodynamic coefficient of cylinder
Authors: Yao Jianfeng , Shen Guohui , Lou Wenjuan 
Published: July 2020

Abstract
This paper was concerned with the wind flow around a circular cylinder with various wind velocities (ν) and turbulence intensities (I). Wind pressures were measured through wind tunnel tests, by which drag coefficient (CD
) and lift coefficient (C
L) were calculated. The values of drag coefficient varies with the Reynolds numbers (Re) and turbulence intensities of incoming flow, and there exists a significant difference between steady flow and turbulent flow in drag coefficient in subcritical Reynolds numbers. An unstable separation bubble appears on one side when flow changes from the steady situation to the turbulent situation. Turbulence intensity affects the spectral density distribution of drag coefficient a lot.
Study on the early performance of silica fume-slag inorganic polymer
Authors: Zhang Hengbo , Xu Jinyu , Luo Xin , Yu Huang , Nie Liangxue 
Published: July 2020

Abstract
Based on the slag inorganic polymer, the silica fume-slag inorganic polymer (SSIP) with the ordinary and semi-dense silica fume slag content of 5%, 10%, 15%, 20%, 25 and 30%, respectively, were prepared, the working performances, early mechanical properties and the phase of SSIP were studied. The results show that: two kinds of silica fume both can prolong the initial and final setting time of SSIP to a certain extent and improve the working performance, but on the whole, the addition of silica fumes will weaken the compressive and flexural strength, thus reduce the early mechanical properties; The XRD spectrum of SSIP has no obvious change after adding silica fumes, the phase composition of two kinds of SSIP was similar, and the larger the silica fume content is, the higher the amorphous content of SSIP is.
Seismic Performance of Assembled Buckling-Restrained Braced Frame Structure with Replaceable Plasticity-deformation Controllable Steel Hinges
Authors: Wang Di , Xiao Xiaofei , Yan Guiyun , Chen Cheng , Xue Panrong 
Published: July 2020

Abstract
Joints and connections of assembled frame structures are weak in earthquake events, and it is difficult to repair these structures after the earthquake damage. To this end, an assembled buckling-Restrained braced frames structure with replaceable plasticity-deformation controllable steel hinge is presented. Push-over analysis and dynamic time-history analysis are carried out to obtain the seismic behaviour of the new structural such as failure sequence and decreasing ratio for interstory drift angle, and to compare with the traditional assembled frame structure. The results show that the proposed new assembled structure is better than the traditional assembled structure in bearing capacity, lateral resistance, and structural ductility. Also, it can effectively control the nonlinear response of the structure including the displacement of the floor.
Fracture Considerations for the Thermal Shock Resistance of Porous Ceramic Materials
Authors: Zhang Yunxia , Wang Baolin , Shang Yanliang 
Published: July 2020

Abstract
The influence factors of thermal shock resistance of porous ceramic materials are analysed from the point of stress criterion and energy criterion. Results show that material properties, relative density and initial crack have important effects to thermal shock fracture of porous ceramic materials. In energy criterion, the total elastic energy is given. The driving force for crack propagation is provided by the elastic energy stored at fracture. When the elastic energy stored in porous ceramic materials is larger than the fracture energy, the crack will propagate. The relationship between crack length and initial crack length is given. In addition, the reason why the thermal shock resistance of porous ceramic materials is larger than dense ceramics is explained.
Stability Analysis of Fan-shaped Hyperboloid Spiral Pipe Truss Under Different Construction Conditions
Authors: ShaoLi Yao , Zheng Yang , ChunTing Lu 
Published: July 2020

Abstract
The analysis of the stability of fan-shaped hyperbolic spiral tube trusses is still inadequate in China. In this paper, through numerical simulation analysis of structures with different column spacings, the stability bearing capacity of such structures under different column spacings is obtained, and the optimal column spacing is obtained. At the same time, the influence of factors such as section type, pipe truss section size and wall thickness on the structural stability performance is obtained, and the general law is obtained, which provides very important guiding significance for construction.
Durability Evaluation Method of Reinforced Concrete Beam Bridge Based on Extension Interval Number Theory
Authors: Liu Fangping , Yi Wentao 
Published: July 2020

Abstract
In this paper, a method for evaluating the durability of reinforced concrete simple supported beam bridge was proposed based on the extension interval number theory and analytic hierarchy process. Firstly, the multi-layer durability evaluation model of simply supported beam bridge is established, which includes sub index layer, index layer, project layer and target layer. Then, the interval number of extension theory is used to replace the number of points to construct the judgment matrix in the model, which solves the fuzzy and uncertainty problems of the traditional AHP expert experience judgment. Due to the uncertainty of the factors affecting the bridge, the normal correlation function is constructed, and the correlation degree of each evaluation element to each grade is used as the basis for the quantitative evaluation of the bridge. Each layer is evaluated based on the results of the following assessment. The bridge durability can be obtained through the level by level evaluation. Finally, an example of a beam in Chao-yang bridge is used to illustrate the method and process of evaluation. The results are reliable and applicable. The assessment process proved that the method presented here is an effective one to solve the paradox in bridge evaluation, where qualitative and quantitative coexistence takes place.
Test study on secondary consolidation behavior of soft soil under different loading paths
Authors: Zhou Qiujuan , Chen Xiaoping , Liu Zhongxiang , Liu Guangwen , Ma Lijia 
Published: July 2020

Abstract
Based on a series of one-dimensional consolidation tests for undisturbed samples in Guangzhou Nansha, the relationship between secondary consolidation properties and the stress history, load ratios and overload pre-pressure had been researched. The results show that the division of primary and secondary consolidation of soft soil is not only associated with the consolidation pressure, but also with loading ration, soil compression process and soil permeability decreased, etc factors. The main factors to affect the secondary consolidation coefficient are the loading ratio, pre-consolidation pressure, load duration, pre-consolidation pressure pc etc. Cα presents different regularities. For example, the larger the ratio is, the greater the influence of the coefficient of secondary consolidation is; secondary consolidation coefficient has a peak value when consolidation pressure equal to the pre-consolidation pressure;the longer duration of the front load, the smaller secondary consolidation coefficient of the later load. After preloading, the secondary consolidation ratio Cα and compression index Cc is a constant: Cα/Cc≈0.03. The test results indicate that preloading processing is a good way to reduce post-construction settlement: the secondary consolidation coefficient is small when the soil is over-consolidated state, and it can greatly reduce the amount of secondary consolidation deformation.
Research on deformation control and prevention measures of pile anchor support system in foundation pit
Authors: Yudian Li , Yanjun Shi , Haibo Li , Yaxin Luo , Qiuyue Gao , Chao Wang , Songwang Zhang 
Published: July 2020

Abstract
With the rapid development of urban modernization, the pile anchor support system has been widely used in the deep foundation pit project. Because the deformation of the pile anchor support system directly affects the overall stability of the foundation pit and brings serious potential safety accidents to the construction of the deep foundation pit, avoiding the deformation of the pile anchor support system can effectively prevent the occurrence of the construction safety accidents of the deep foundation pit. Based on many years of construction experience, the deformation rule of pile anchor support system of deep foundation pit is taken as the research object. This paper starts from the scheme design of pile anchor support system and the monitoring data of the foundation pit, and combines with the actual deformation of the pile anchor support system in the construction site, summarizes the causes and prevention measures of the deformation of the pile anchor support system in the construction stage. The research results show that in the initial stage of construction, the top of the pile anchor support system inclines forward to the pit and gradually changes into a bow shape. This kind of deformation is related to the increase of excavation depth and the erosion of active soil pressure area by surface water. In the later stage of construction, the deformation of the top of the foundation pit converges and the bottom of the pile anchor support system protrudes into the pit, which is related to the erosion of the passive soil pressure area by rainwater and the embedded depth of the pile foundation.
Damage assessment and reinforcement measures of prestress concrete bridge after fire
Authors: Li Dai , Jianqiang Wu , Lin Mao 
Published: July 2020

Abstract
In order to provide reasonable advice for the maintenance and reinforcement of Bridges after fire, it is necessary to assess the damage of Bridges after fire. In this paper, the damage area of a fire-damaged concrete highway bridge is divided according to the concrete apparent detection, and the damage degree of different parts is determined. Carbonization depth and springback detection were used to determine the area and depth affected by fire. Based on the analysis of the surface fire temperature of components in different areas and the internal temperature of concrete, the degradation of the mechanical properties of concrete and steel bars is further deduced, and the damage assessment of the bridge performance is finally carried out.
Experimental study on mixing proportion of reactive powder pavement concrete
Authors: Yan XiKang , Zhou Ming 
Published: July 2020

Abstract
Experimental study is carried out on mixing proportion of reactive powder pavement concrete. Writer studied influence of concrete admixtures such as silica fume, metakaolin and RPC special mineral filler. Studies have shown that: Silica fume can improve compressive strength of RPC. When metakaolin is used to replace some silica fume, compressive strength will decrease, but workability of concrete mixture will improve obviously. Thus, metakaolin should be add up according to specific situation. Special mineral filler can obviously improve construction performance of concrete mixture, reduce viscosity and increase slump without affecting compressive strength. Therefore, it should be add up firstly. At the same time, RPC100, which is suitable for road surface engineering, was successfully prepared, and its mixing proportion and related mechanical properties were obtained.
Static loading test and analysis of prestressed concrete bridge
Authors: Xie Ruqiang , Chen Jianwei 
Published: July 2020

Abstract
In order to test the structural performance for the bridge of Linxi 9th road project, the static test of precast prestressed concrete bridge hollow slab was carried out by four stage static loading method. Under the condition of elastic working, the flexural bearing capacity, crack propagation and relative residual displacement of the main control sections of the hollow slab are mainly investigated. The results of static loading test show that, when the efficiency of static loading test is 97%, the structural calibration coefficient, residual displacement of main measuring points and crack propagation meet the requirements.
The investigation of fatigue growth and CTOD test of structure steel
Authors: Wu Changqing , Yu Qiming , Wang Fei , Gong Weibo , Zhao Wei 
Published: July 2020

Abstract
Due to the inherent and unavoidable defects of the steel structure of the bridge, CTOD (crack tip opening displacement) tests were carried out on E43 steel specimen under a condition of fatigue. The results provide an experimental base and computing foundations for the bridge steel-using. In this paper, CTOD fatigue pre-cracking tests for E43 steel was studied.