bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Significance of Emission Trading System from the Perspective of Environmental Regulation— Based on the Analysis of China’s Environmental Pollution Control Data
Authors: Wang Yingdong , Zheng Yueming 
Published: July 2019

Abstract
Since the reform and opening up 40 years ago, China’s economy has been growing rapidly, but the continuous GDP growth occurs at the expense of natural environment. Based on the analysis of China’s environmental pollution situation and investment in pollution control since the 21st century, it can be found that there are some problems, such as serious air pollution and water pollution, deepening environmental damage, increasing economic losses caused by environmental pollution and insufficient investment in industrial pollution control. Emissions trading system, as an efficient system of pollution control, compared with the traditional pollution charge system, can effectively solve the problem of China’s air pollution and water pollution. Air pollution and water pollution to realize control of total pollution so that it is likely to achieve industrial upgrading,optimize allocation of environmental resources and reduce the cost of pollution control. It is more conducive to achieving the coordination between environmental protection and economic development.
Biodegradation of diethyl phthalate by Pseudomonas sp. BZD-33 isolated from active sludge
Authors: Ke Zhang , Xiangling Wu , Jian Chen , Jia Chen 
Published: July 2019

Abstract
Diethyl phthalate (DEP) is a common pollutant, which is widely used in industry. A strain of DEHP-degrading bacteria was isolated from activated sludge.According to the phylogeny of 16S rDNA sequence, BDZ-33 strain was identified as pseudomonas sp. Biodegradation of DEP by Pseudomonas sp. BZD-33 was investigated. The results show that the BZD - 33 degradation DEP optimal pH and temperature of 8.0 and 15 °C respectively. The degradation concentration ranged from 100-400 mg·L−1. The degradation efficiency and growth rate of the strain were higher under alkaline conditions than under acidic conditions. The best temperature below 20 °C. The degradation rate decreases with the increase of temperature. After 60 h of culture, the degradation rate of DEP wastewater with a concentration of 400 mg/L reached 90%. The results showed that BDZ-33 could efficiently degrade DEP, which might be a promising DEP repair pathway.
Study on the Combined Transport of Container Ports in Shandong Province
Authors: Meng Xiangru 
Published: July 2019

Abstract
In the new type of multimodal transport, especially in Shandong province, which has developed railways, there must be railways to participate in container port group transport and improve multimodal transport.Considering the economic and industrial layout of the hinterland of shandong province, the transportation structure is adjusted scientifically and the distribution of transportation resources is optimized.Firstly, container demand between hinterland and port is analyzed. Then the capacity of the combined transportation of iron and iron is analyzed. Finally, the improvement measures of container ports in Shandong province are put forward.
Surface plasmon resonance sensor based on Bi-monomer System (BMS) molecularly imprinted polymer for detection of 17β-estradiol in aqueous media
Authors: Jiao S Q , Chen X L , Yu J Y , Nawaz T , Wei T X 
Published: July 2019

Abstract
In this work, a hydrophilic and high sensitivity sensor was fabricated based on BMS (MAA : HEMA = 3 : 1, molar ratio) molecularly imprinted polymers (MIPs) film for 17β-estradiol (E2) detection in aqueous media combined with surface plasmon resonance (SPR) technique. In-situ UV polymerization method was used to synthesize the MIPs film on the gold surface which was modified with dodecyl mercaptan. Afterwards, the MIPs film was characterized by infrared spectroscopy (IR), scanning electron microscope (SEM) and contact angle measurements. The results showed that the MIPs film was successfully prepared on the surface of the sensor chip with good hydrophilicity and permeability. The analysis of SPR spectroscopy indicated that the MIPs film displayed greater selectivity to E2 than other competitors and non-imprinted polymers (NIPs) film and showed better adsorption performance than one kind of monomer for the same E2 concentration. The response of E2 sensor ranged from 2.5×10−16 to 2.5×10−8 mol/L with an ultra-low detection limit of 9.14×10−18mol/L in PBS buffer (pH 7.4). In addition, this sensor performed good reusability and stability. Finally, the sensor was successfully applied to detect E2 in tap water and human urine and had wide detection ranges and low detection limits in backgrounds.
Model Test of Soil Squeezing effect of Jacked Pile Sinking in Sand Slope
Authors: Hongli Ding 
Published: July 2019

Abstract
Jacked pile sinking has many advantages in terms of construction, which is one of the commonly used piling methods. However, the jacked pile sinking has significant squeezing effect against the side slope, resulting in the stability of the slope being affected to a certain extent. This paper attempts to determine by model test the squeezing effect of jacked pile sinking in slope.
A Marine Reverse Osmosis Desalination System with Energy Recycling Devices
Authors: Li Xiaoxia , Ji Yunguang , Zhao Yucheng , Liu Lu , Xue Shuqi 
Published: July 2019

Abstract
A new type of marine reverse osmosis seawater desalination technology is developed in order to solve problems of high energy consumption, large volume and high noise, etc. in traditional one. The new process uses a medium pressure feed pump and a three-in-one circulating pump in series. The three-in-one pump serves as the high-pressure circulating pump, energy recycling device and booster pump. The pump can effectively recover the pressure energy in the process of reverse osmosis, so that the system energy consumption greatly reduced; the small configuration and integrated design of the device can adapt to the narrow space of the ship; the reciprocating frequency of the simplified system is low which means lower noise of the new system than the traditional one. The system can fully meet the requirements of miniaturization and energy saving of marine seawater desalination equipment.
Application of Optical Measurement Technology in Welding Simulation of Box Complex Structure
Authors: Zhang Guizhi , Fang Yuanbin , Dong Shuanlao 
Published: July 2019

Abstract
To verify the correctness of the sample quality and the finite element model, optical measurement technology is applied in this study. Unable to consider the quality of tack welding during the established modeling, a three-dimensional scanner is used to detect box complex structures after welding. The finite element model of box structure is established for the study of welding deformation of box structure with short, multi space and multi staggered distributed weld seam. The accuracy of the model is verified by global detection of the structural parts. The results show that the deformation trend warps at the boundary of the left and right plate and concaves in the center of the plate. The maximum deformation of the vertical plate center is 1.714mm. The bottom pad produces the extruding tendency, and the deformation near two sides of the plate is about 0.51mm, which is greater than that of 0.34mm away from the two sides of the plate. The deformation is not consistent in the front and back sides of the Z plate. The maximum error of the sample parts takes place in the front Z shape plate with an error of - 0.03mm~0.12mm. There is a certain size difference under the influence of the welding gap, but it still meets the requirements of the engineering application to eliminate the influence of the welding quality on the deformation measurement. By comparing the results of the simulation and the global measurement of the structural parts, the difference between the vibration seat and the front Z plate has a large difference that is 0.12mm∼0.24mm, and the deviation satisfies the requirements of the engineering application, and it can effectively guide the production.
A novel UV pumped white-emitting phosphor La3SbO7:Dy3+ for white light-emitting diodes
Authors: Liu Simei , Deng Bin , Chen Jun , Liu Hui , Zhou Chong-song , Yu Ruijin 
Published: July 2019

Abstract
The dysprosium activating La3SbO7 white-emitting phosphors were prepared via solid-state route at 1350°C in air atmosphere and its photoluminescence properties were examined by X-ray diffraction (XRD) and photoluminescence spectra in details. La3SbO7:Dy3+ phosphor with excitation at 353 nm emitted blue light (490 nm) and yellow (580 nm) which were assigned to 4F9/2–6Hj/2 transitions (J=15, 13), respectively. Moreover, the transition 4F9/2–6H13/2 was the strongest emission intensity between two typical emission bands. The CIE of prepared phosphors entered into white region. The optimal emission intensity of the La3SbO7:Dy3+ luminescent materials was realized when x = 0.15 and the concentration quenching mechanism of Dy3+ has also been tested. And the La3SbO7:Dy3+ can be as a white-emitting phosphor applied in n-UV LEDs on results.
Elution Technology of Tubular Vortex Enhanced Diesel-Contaminated Maifan Stone Particles
Authors: Geng Kunyu , Meng Min , Ding Yanliang , Yang Qiang 
Published: July 2019

Abstract
In view of the difficulty in repairing petroleum-contaminated soil, a tubular vortex elution device is designed based on previous research findings in this paper. Using the experimental method, the diesel-contaminated maifan stone was taken as the research object, the process of tubular vortex technology to repair the soil was simulated, and the particle motion visualization research was studied. The optimal structure of tubular vortex elution device was determined by adjusting the form and combination of spiral blades. It is found that the optimal structure of the tubular vortex elution device is that the number of spiral blade channels is three, the lead of spiral blade is 12.5 mm, the spiral blades are arranged alternately in different directions, and the number of spiral blades is four. Under the regulation of the vortex in the tube, the particles not only do the spiral revolution, but also do the rotation movement, thereby strengthening the desorption of the pollutants in the particles.
Research on China’s Manufacturing Industry Upgrading from the Global Perspective
Authors: Ma Yungao , Xia Liyu , Meng Weixuan 
Published: July 2019

Abstract
The global industrial competition is undergoing major readjustment. Accompanied by the re-industrialization strategy of the developed countries, as well as the integration of the new generation information technology and the advanced manufacturing technology, China’s manufacturing industry is facing opportunities and challenges at the same time. This paper analyzed the global manufacturing industry development trend and pointed out China’s manufacturing industry existing problems. In the end, this paper put forward relevant suggestion to promote the transformation and upgrading of China’s manufacturing industry.
Research on the Spatial Pattern of Traditional Villages Based on Spatial Syntax: A Case Study of Baishe Village
Authors: Yang Xiaojun , Kong Ziqi , Li Xiuyuan 
Published: July 2019

Abstract
Along with the rapid development of today’s society, new urbanization has promoted the progress and development of the rural economy, and it has inevitably brought devastating blows to traditional villages, leading to its decline and even disappear. This paper takes the traditional Chinese village Baishe Village as the research object, uses GIS space syntax, constructs the relationship diagram and mathematical model of Baishe village spatial syntax, analyzes the parameter value data, and discusses the village spatial shape and spatial deep structure characteristics based on the analysis results. To provide reference for the protection and development of traditional villages.
Research on Route Optimization Based on Drop and Pull Transport
Authors: Xu Tongwen , Li Yiru , Yu Xiaohan , Meng Bo , Wang Jing , Qiao Youfeng , Xu Tongwen 
Published: July 2019

Abstract
Many logistics enterprises in China have some problems, such as low transportation efficiency, long waiting time for loading and unloading, low mileage rate. These problems not only increase the operation cost of enterprises, but also hinder the development of logistics and transportation industry to a certain extent. As a new mode of transportation organization, drop and pull transport is widely used because of its advantages of reducing transportation costs, improving transportation efficiency, increasing mileage, reducing environmental pollution, and reducing waiting time for loading and unloading. By studying the advantages and organizational mode of drop and pull transport, this paper analyses the efficiency of full-trailers and semi-trailers. On this basis, combined with the actual transportation of R company, LINGO software is used to establish the transportation model, and the best route scheme based on the trailing transport is obtained.
Effects of Grafting on Sugar Metabolism of Melon (Cucumis melo L.) Seedling under Copper Stress
Authors: Luxi Yang , Yongdong Xie , Wenyi Yan , Zhong-qun He 
Published: July 2019

Abstract
The experiment was carried out with pumpkin ‘JingXinZhen NO.3’ as the rootstock, thin-skin melon ‘IVF09’ as the scion, and self-rooted seedling as the control. The effect of grafting on the sugar metabolism of melon seedlings under copper stress was studied. The results showed that under the condition of copper stress, the growth of melon seedlings was inhibited, the sugar content of leaves decreased, and the sucrose content decreased significantly, and the total activity of sugar metabolism related enzymes changed. However, under the same conditions, the biomass of the grafted seedlings is greater than that of the self-rooted seedlings, and the greater the stress concentration, the greater the grafting promoting effect; Glucose and fructose in grafted leaves were significantly higher than those in self-rooted seedlings, raffinose and stachyose were significantly lower than self-rooted seedlings, the highest ratio of glucose to fructose increased by 5.26% and 32%; and the total activity of sucrose synthase (SS) in the leaves of grafted seedlings was lower than that of self-rooted seedlings. The total activity of sucrose phosphate synthase (SPS), neutral invertase (NI) and acid invertase (AI) was greater than that of self-rooted seedlings. The results showed that grafting could change the sugar activity of seedling leaves by changing the total activity of sugar metabolism related enzymes in melon seedling leaves, and then change the sugar metabolism of melon seedlings to reduce the toxicity of copper stress on melon seedlings.
Study on Nondestructive Testing Methods for Crimping Quality of Steel Cored Aluminum Strand
Authors: Xie Yi , Yang Lei , Wang Sida , Li Dengke , Qiao Yaxia , Zhang Hao , Luo Hongjian 
Published: July 2019

Abstract
The crimping quality of steel cored aluminum strand for overhead transmission lines has a direct influence on the safe and stable operation of lines. The common crimping quality problem of splicing sleeve is analyzed in this paper. It is indicated that the core issues of crimping of steel cored aluminum strand is the inaccurate crimping positioning of the aluminum tube of splicing sleeve. At present, there is no effective and convenient nondestructive method to implement quality supervision during crimping process. Aiming at the above problem, magnetic detection can be used to indicate the relative position between the non-crimped area of steel and aluminum tubes since they have different magnetic properties. We propose to strengthen the crimping quality supervision of steel cored aluminum strand in order to ensure the safe operation of transmission lines.
Variable step-size incremental conductance method used in PV power system
Authors: Chai Ying-bo , Pu XIE 
Published: July 2019

Abstract
The paper presents a new control strategy on MPPT as a result of the disadvantages of the present variable step-size incremental conductance method on MPPT, which is simulated in MATLAB/Simulink. The simulation results show that the new control strategy is obviously better than the previous in terms of the tracing velocity, which is the expected result.
Design of high voltage grid-connected switch energy storage circuit control system
Authors: Zhang Liu , Ma Shaohua , Wang Gang , Wang Lijun 
Published: July 2019

Abstract
The paper proposes and designs the control system of the high voltage grid-connected switch energy storage circuit based on ARM, in order to ensure the normal operation of the power system. In view of the problem that the high voltage grid-connected switch controlled by Lab-VIEW software currently takes a long time for spring energy storage and the system response speed is slow, which is not conducive to timely cutting off the fault source. The hollow current transformer and voltage transformer are used to collect the current signal and voltage signal on the main line of the power system respectively. Then the processed signal is input into the internal analog to digital conversion unit of the system microcontroller for analog to digital conversion, and the processed signal is calculated and judged logically by using the system microcontroller and the principle of three-point method measurement. If there is a defect in the energy storage circuit of the grid-connected switch, the corresponding defect treatment method shall be adopted according to the judgment result, and the electrical isolation switch circuit breaker control instruction signal shall be issued at the same time, and then the system drive circuit shall execute the protection action. At the same time, on this basis, the software structure of the system and the specific process of calculating and processing tasks are given. The results of system performance test show that the designed system can not only ensure the high voltage grid-connected switch to meet the mechanical properties and low voltage action characteristics, but also reduce the energy storage time of the spring, shorten the system reaction time, which is conducive to cutting off the fault source in time and avoiding the expansion of the accident range.
Study on power oscillations suppression strategy of experimental microgrid based on power optimal control
Authors: Dongh H N , Li C , Yao R Y , Zhai X H , Ding X Y 
Published: July 2019

Abstract
The experimental microgrid could provide a platform for operation and testing of the tested microgrid, so that the performance of the tested microgrid could be obtained before it was put into use. The microgrid had different structures, configurations, distributed generations and three-phase unbalanced load, so the voltage, current and power of the experimental microgrid would inevitably oscillate. First, the power oscillations mechanism of multi-source microgrid was deeply analysed, that was, the analytical relationship between active power pulsation and reactive power pulsation was derived and the influence of positive and negative sequence electrical quantities on power pulsation was revealed. Then, a power oscillations suppression strategy based on power optimal control was proposed. Finally, we built a multi-source microgrid simulation model and a power oscillations control system simulation model on MATLAB. The results showed that the control strategy proposed in this paper could significantly reduce the amplitude of power oscillations caused by unbalanced voltage and current. It could be verified that the control strategy was correct and effective.
Prediction of water quality based on artificial neural network with grey theory
Authors: Zhai W , Zhou X , Man J , Xu Q , Jiang Q , Yang Z , Jiang L , Gao Z , Yuan Y , Gao W 
Published: July 2019

Abstract
In this paper, the grey theory, three type of artificial neural network (back-propagation neural network, radial basis function neural network, and generalized regression neural network) and their combination were used to predict the pH values in the evaluation of water quality. Based on the measured data from the Xielugang in Jiaxin with the post-hoc analysis for the c and p values of the prediction, the results showed that the prediction by using the generalized regression neural network has the averaged relative error 0.61%, and c <0.65, p>0.7.
Application of magnus effect and lift blade in high altitude wind power
Authors: Zhang Honglin , Yang Hongwei , Ma Xiaoli , Liu Jing 
Published: July 2019

Abstract
A high-altitude wind power generation system scheme is proposed. The cylindrical airship is surrounded by the lifting blade of H-type vertical axis wind turbine.The blades are used to drive the airship to rotate. The airship rotating under the wind has a magnus effect, and the generated lift maintains the floating state of the airship. The paper establishes its 2D numerical simulation model. The turbulence scheme adopts SST K-ω and the y+ value is controlled between 5∼10. The slip grid method is used to calculate the parameters when the model has a Compactnessl degree of 0.4, and the airship’s lift-to-drag ratio is 7 and power coefficient is 13%, the corresponding tip speed ratio is 2.33. Then in this tip speed ratio, the working condition of the wind turbine at 3∼24m/s wind speed is analyzed. It is found that the power coefficient increases slowly to 16% and the lift-to-drag ratio is between 4∼7. Comparing the torque coefficient difference between the scheme and the H-type wind turbine, it is found that it performs negative work at most moments on the leeward side. The streamline diagram and pressure cloud diagram of the airship blades at different azimuth angles are analyzed, which explains the reason why the airship reduces the thrust and generates lift. It is concluded that the scheme has certain rationality.
Simulation of Grid Paralleling Devices based on back to back VSC-HVDC Converted into UPFC
Authors: Tan Yalan , Liu Jiajun , Wang Kun , Yang Song 
Published: July 2019

Abstract
The back-to-back VSC-HVDC paralleling device structure is similar to the unified power flow controller (UPFC) circuit structure. After completing paralleling operation, the back-to-back VSC-HVDC paralleling device can be converted into the UPFC device through relevant electrical operations. Aiming at the problem of power and frequency fluctuation in the process of conversion, a method of using circuit breaker and switch state as characteristic signals to block or open the signal of parallel side and series side converter is proposed.By this method, a smooth transition from back-to-back VSC-HVDC paralleling device to UPFC device is realized. The method is verified by PSCAD/EMTDC simulation.
The Operating State Assessment of Wind Turbine Based on SCADA System
Authors: Gang Xu 
Published: July 2019

Abstract
Based on SCADA system, this paper evaluates the performance and operation status of wind turbines using improved fuzzy neutralization evaluation theory. In this study, the second rolling average method is used to analyze the characteristics of wind power fluctuation from the differential time scale and fan capacity. It provides a theoretical basis for the normal operation of wind turbines.
Potential analysis of class II reservoirs after water flooding based on core
Authors: jing Xie xiao 
Published: July 2019

Abstract
With the deepening of oilfield development, residual oil distribution has become an important reference for evaluation of oilfield development effect and selection of measures to improve oil recovery. Based on core data of coring wells, through core analysis and comparison between coring wells of different layers in single well and different coring wells in adjacent blocks at the same layer and different coring wells, combined with sedimentary facies zones and dynamic production and development data, this paper analyses and studies the exploitation situation of class II reservoir a II 1-9 in western S oilfield, in order to provide basis for searching for potential remaining oil and formulate more suitable potential tapping measures.