bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of Biogas Residue Organic Fertilizer on the Yield and Quality of Dragon Fruit
Authors: Huang Xiaohong , Jiao Jing , Li Zunxiang , Jihua Du 
Published: December 2019

Abstract
In order to explore the effect of biogas residue organic fertilizer on the yield and quality of dragon fruit, field experiments were carried out in comparison with traditional fertilization and cattle manure organic fertilizer to provide technical support for the application of biogas residue organic fertilizer in dragon fruit production. The results showed that the yield per ha and sugar-acid ratio of dragon fruit treated with biogas residue organic fertilizer increased by 12.84% and 60.55% respectively compared with the traditional fertilization treatment, and the VCR (vario-cost ratio) value reached 4.95. Compared with cattle manure organic fertilizer, the yield per mu and sugar-acid ratio of dragon fruit increased by 9.82% and 5.58%, respectively, with a newly increased income of 11,900 RMB/ha. Therefore, biogas residue organic fertilizer has a good application prospect in pitaya cultivation.
Risk Analysis and Intervention Policy Research of Miners’ Unsafe Behavior Based on System Dynamics
Authors: Nannan Qu , Han Ren , Qinggui Cao , Yunna Wang 
Published: December 2019

Abstract
With the application and development of the discipline of safety science and safety economy in enterprises, people gradually began to realize that the unsafe behavior of employees themselves is an important source of coal mine safety issues. This paper constructs a behavioral risk model based on the employee behavior risk in coal mines combined with ALARP principle, and establishes a coal mine safety production organization behavior expectation utility model based on von Neumann Morgan Stan’s utility function. Based on this risk model, employees at different stages are Risk attitude analysis of risk appetite, using Vensim software to construct the model of unsafe behavior level of coal mine workers, and obtaining the trend of unsafe behavior level of coal mine workers through model simulation. Based on the simulation results, the behavioral risk management decision research is carried out to realize the behavior of coal mine employees.
Discrete element simulation and parameter selection about triaxial test of cohesive soil containing calcareous nodules
Authors: Monong Ba , Daoxiang Wu , Lei Ye , Jiacheng Guo 
Published: December 2019

Abstract
Based on the discrete element method, the relationship between the microscopic parameters and the actual macroscopic parameters is introduced. In this paper the method of calculating the corresponding microscopic parameters of cohesive soil containing calcareous nodules is discussed, and the numerical model is established by using the solved parameter results. Numerical simulation results show that: the numerical model of cohesive soil containing calcareous nodules is basically consistent with the stress-strain curve of the actual triaxial test results, and has a high similarity. On this basis, the mechanism of the effect of calcareous nodules on the mechanical properties of soil on the mesoscale scale can be further discussed.
Application of marine oil spill model based on Monte Carlo method in Laoshan Bay
Authors: Gong Jianbo , Pang Liang 
Published: December 2019

Abstract
The Monte Carlo method is used to simulate the random motion of oil particles, and it is more and more widely used in the oil spill model. The marine oil spill model established in this paper focuses on the two most important processes in the oil spill process: one process is to simulate the diffusion process of oil spill, whose main method is the Monte Carlo method; the other is to simulate the oil film drifting on the sea, which mainly considers the marine hydrological conditions during the oil spill, especially the transport of the wind field and the surface flow field to the oil film. After using this model to simulate an oil spill accident, in order to verify the accuracy, the mature simulation software Mike21 OS module is used to simulate the oil spill under the same conditions, and finally the two results will be compared and analyzed. In this paper, the improvement and innovation of the model design and calculation method are made. When considering the influence of the flow field on the oil film motion, the flow field at the corresponding moment of the oil particle is accurately calculated by the differential method, and the accuracy of the simulation is improved. The Euler-Lagrangian particle tracking method is used to determine the drift process of the oil film. The Monte Carlo method is used to simulate the diffusion process of the oil film and to establish the marine oil spill model. In the calculation, mainly by dividing the simulation process into a certain number of time periods, the motion of the oil particles under the influence of wind speed and flow velocity and the free diffusion motion are superimposed in each time period to obtain the motion distance of this time period.
Effect of Nano-CaCO3 on Concrete Compressive Strength
Authors: Yang Jiangong 
Published: December 2019

Abstract
By comparing and analyzing the compressive test data of different content of nano-CaCO3 concrete, the method of optimizing the compressive performance of nano-CaCO3 concrete is proposed. Based on this, the influence of fly ash content on the compressive strength of nano-CaCO3 concrete is studied, which provides a reference for improving the durability of concrete. Improve the recycling efficiency of building materials and accelerate the practical application of nano-CaCO3 material concrete in engineering industry.
Effect of Magnetic Pulsing and Low-Temperature Vacuum Annealing on the Soft Magnetic Properties of Hitperm Amorphous/Nanocrystalline Alloy
Authors: Gu Yue , Xiao Zhiwei , Zhang Yanhui , Chao Yuesheng , Wang Jian , Wang Biao 
Published: December 2019

Abstract
We studied soft magnetic properties of FeCoHfBCu amorphous/nanocrystalline alloy treated by medium-frequency magnetic pulsing (frequency 1500-2000Hz, field intensity 200-250Oe) and vacuum annealing at low temperature. The results of Mössbauer spectroscopy and transmission electron microscope show that the treating of magnetic pulsing with a medium frequency can introduce the nanocrystallization of amorphous FeCoHfBCu, precipitation of nm phase α-Fe(Co). And, with the increasing of pulsed frequency and field itensity, the crystalized volume friction increases from 24.71% to 35.2%. The low-temperature vacuum annealing for 100°C/30min of magnetic pulsed samples further improved the soft magnetic properties of nanocrystalline alloy. As compared with the amorphous state, the magnetic coerelvity decreaced from 103.4A/m to 34.0A/m, the saturated magnetization decreased from 160.47emu/g to 149.32emu/g.
Detection Technology and Application of Three-Dimensional Ultrasonic Imaging of Concrete
Authors: Lou Miao , Liao Xudong , Lv Xianghui , Li Bo , Deng Jinqiu 
Published: December 2019

Abstract
Concrete is a very important structural material in engineering buildings and it is of great significance and practical value to visually describe the internal components and defects of concrete structures by means of imaging. In this paper, a three dimensional imaging detection technology for concrete has been introduced, which employs special techniques such as point contact, dry coupling, array and shear wave observation, and the result of the test block experiment and engineering practice shows that this method can accurately detect abnormal parts of steel bar and void in steel fiber reinforced concrete.
Effectiveness of air entraining agent and defoamer on the bubble distribution of fresh mortar under different mixing methods
Authors: Hu Jianwei , Xie Yongjiang , Liu Zike , Weng Zhicai , Wang Yuehua , Li Kang 
Published: December 2019

Abstract
The purpose of this study was to elucidate the distribution of fine bubbles and coarse bubbles in the mortar system of cement-superfine slag powder mortar after multiple mixing of air-entraining agent and defoaming agent. The experimental study used a fresh concrete pore structure analyzer (AVA instrument) to measure the bubble size distribution and related bubble parameters of fresh mortar. The critical size of the bubbles was defined as the size that the air bubbles can maintain the volume stability over time. Based on the time-dependent change in the volume content of the larger bubbles within two hours after mixing, it was found that 500 μm was the critical dimension of bubbles. By adjusting the mortar mixing methods, a lower mortar viscosity was achieved while the total volume of fine and coarse bubbles were also reduced. In addition, when the blending ratio of defoaming agent and air-entraining agent was within the range of 0.50-0.54, the bubble structure of the cement-superfine slag powder mortar had been significantly improved, and more fine bubbles and fewer coarse bubbles had been distributed in the mortar.
Mid-and Long-term Contract Decomposition to Promote New Energy Consumption
Authors: Yang Chunxiang , Wu Feng , Han Jie , Wu Guodong , Wang Yang , Zhang Tianyu 
Published: December 2019

Abstract
With the increase in China’s new energy installed capacity, the pace of domestic power market reform is also steadily accelerating. Having the feature of randomness, volatility and intermittency which makes power generation fragmented, higher risks occur when new energy generation is involved in spot market. The proposal of a new round of electricity reform also brings great challenges for The Independent System Operator (ISO), including decomposing mid- and long-term contract curve which not only requires consideration of monthly electricity balance but also makes the curve conform with the power forecasting to the greatest extent. The Independent System Operator should formulate reasonable mid- and long-term curve decomposition combined with the signed contracts as well as ensure reasonable and fair income of new energy plants in spot market to increase their enthusiasm in the market in the process of decomposing mid- and long-term contract curve.
New energy consumption analysis based on impedance type electrical distance
Authors: Ma Zhiqi , Xia Bing , Shi Zhongzhi , Wang Ling , Li Ming , Sui Zhenwei , Li Bing , Jin Manyu , Zhang Wenying , Bao Hai 
Published: December 2019

Abstract
All along, electrical distance is used to characterize the electrical tightness between two nodes, widely used in reactive power partitioning and reactive power location. In fact, the electrical distance can also be used to select new energy access points. Most of the existing electrical distances are also calculated by the sensitivity method. The electrical distance obtained by the sensitivity method lacks the concept of space and the calculation is not accurate. The new electrical distance calculated by the equivalent transmission impedance not only reflects the close relationship between the two power quantities, but also has the concept of “distance”. It is persuasive and has a wider application range. This paper will use the new electrical distance, apply to the selection of new energy access points for the 6-node distribution network, and build a consumption analysis map to track and analyze the consumption of new energy.
Assessing the Functions of Pumped Storage Power Stations in Power System Based on Fuzzy Comprehensive Evaluation
Authors: Yang Jie , Yan Xiaoqing , Li Guanqi , Zheng Kuan , Zhang Fuqiang 
Published: December 2019

Abstract
Pumped storage power stations play an important role in the power system, such as ensuring safety, regulating peak and valley, and promoting the absorption of new energy. Quantitative analysis of the function of pumped storage power station is of practical significance for its healthily and orderly development. Therefore, this paper puts forward a functional evaluation model of pumped storage power stations in the power system. Firstly, the present evaluation system of pumped storage power stations is analyzed. Then, a functional index system is established from the physical and mathematical aspects, and a fuzzy comprehensive evaluation method based on AHP is proposed. Finally, the paper makes an empirical analysis of the above methods by taking the actual operation of typical pumped storage power stations in north China, east China and northeast China as examples.
Research on Renewable Energy Quota System and Power Coordination Transaction
Authors: Bo Pang , Zhu Li , Jing Zhao , Dunnan Liu , Genzhu Li , Wenzhuo Wu 
Published: December 2019

Abstract
On May 10, 2019, the National Development and Reform Commission and the State Energy Administration promulgated the Notice on Establishing and Perfecting the Guarantee Mechanism of Renewable Energy Power Consumption, which opened the prelude to the implementation of the renewable energy quota system in China. The emergence of renewable energy quota trading market will greatly affect the traditional electricity market trading mechanism which only considers electricity trading. In order to promote the optimal allocation of power resources, this paper aims at the coordinated transaction between renewable energy quota and electricity. Firstly, it analyses the relationship between renewable energy quota market and electricity market, and the impact of renewable energy quota on power trade is explored. Secondly, renewable energy quota execution and assessment are elaborated. The basic principle of quota and electricity coordinated trading; finally, according to China’s national conditions, the paper puts forward countermeasures for the construction of the coordination mechanism of electricity trading and quota trading, and provides direction and suggestions for the implementation of renewable energy quota system in China.
Studies on callus induction of Valeriana officinalis under different disinfection methods and photoperiod conditions
Authors: Yang Jiali , Zhang Yaosheng , Gu Ye , Wang Changbao 
Published: December 2019

Abstract
Using tender leaves of Valeriana as explants, 70% ethanol and 0.1% mercury as disinfectants, the effects of different disinfection methods and photoperiod on callus induction of Valeriana were studied. The rresults show that when C3 group was used to treat explants, the pollution rate and browning rate are lower, the callus induction rate was the highest. When the photoperiod was 0h/d, the healing time was the shortest, and the callus quality was the best in the experimental group, which was more conducive to the next step. The optimal disinfection combination is to soak the explants in 70% ethanol for 30 s and then soak them in 0.1% mercuric chloride for 7 min. The optimum photoperiod is 0h/d.
Effects of different aquasorb on germination and drought resistance of lavandula Angustifolia seeds
Authors: Li Zeyu , Ren Guoli , Gu Ye , Wang Changbao 
Published: December 2019

Abstract
Experiments were carried out to simulate the effects of three water-retaining agents on germination and drought resistance of Lavandula seeds. The germination rate, germination potential, germination index, and the changes of catalase and amylase activities during germination were observed after treatment with water-retaining agent. Our results show that (1) the use of a suitable water retention agent can promote the germination rate of Lavandula seeds, and the best germination result is obtained by using water retention agent B in 0.25%. (2) The peroxidase activity after using the water-retaining agent was lower than that of the control group; meanwhile, the amylase activity was higher than that of the control group. The best treatment results of water-retaining agent A, B and C are 0.5%, 0.25%, and 0.1%, respectively. We conclude that the water-retaining agent B in 0.25% is optimum concentration for Lavandula seeds.
Separating and Purifying of Endophytic Fungi from Ginkgo Biloba and Screening of Flavonoid-Producing Strains
Authors: Zhang X.Y. , Li X. , Han M.M. , Cai Z.Y. , Gao X. , Pang M.X. , Qi J.H. , Wang F. 
Published: December 2019

Abstract
In order to screen the endophytic fungi of ginkgo biloba with high flavonoid yield, the surface of the sample was disinfected by immersing with 75% ethanol, 3% sodium hypochlorite and sterile water alternating. The endophytic fungi of ginkgo biloba were separated by tissue culture method. 47 strains of endophytic fungi were obtained, and 16, 17 and 14 strains were found in the branches, leaves and roots respectively. The flavonoid-producing strains and its content of total flavonoids in the fermentation broth were determined by chromogenic reaction and colorimetric method of aluminum chloride respectively. Finally, four strains with the highest flavonoid-producing (Y6, Y8, Y10 and G8) were screened, and theirs total flavonoids content in the fermentation broth were 25.33±1.29 mg/L, 32.04±1.38 mg/L, 20.48±0.83 mg/L and 20.19±1.59 mg/L respectively.
Study on the Scale of New Energy Development during the 14th Five-Year Plan Period
Authors: Mi Zhe , Yuan Bo , Zhang Jinfang 
Published: December 2019

Abstract
A major issue in the successful realization of energy transformation in the 14th Five-Year Plan period is to solve the problem of optimizing the allocation and coordinated development of new energy and flexibly adjusting resources. During the 14th Five-Year Plan period, if the current new energy installation distribution ratio of the eastern and western regions is still maintained, it will be very difficult to control the overall curtailment rate of the new energy in the State Grid Management area below 5%. Another development option is to further tilt the installation of new energy towards the central and eastern regions, make full use of the local accommodation space in the central and Eastern regions. It is easier to achieve the total curtailment rate of new energy within 5%, and at the same time, the total installed capacities of new energy in the whole country can be further increased. It is also suggested that during the 14th Five-Year Plan period, the curtailment rate restriction should be relaxed to 8% moderately, which not only has better overall system economy, but is conducive to supporting a larger scale of new energy development and increase the proportion of new energy generation in total power generation.
Efficiency of dynamic compaction on high backfilled ground in VSC-HVDC BTB convertor station
Authors: Jinhu Yang , Wei Zhai , Wen Jiang , Guangbing Xu 
Published: December 2019

Abstract
To evaluate the effect of dynamic compaction on high backfilled ground in VSC-HVDC BTB convertor stations, a modified numerical simulation procedure was proposed with the changes of stiffness and strength considered reasonably. Simulation results show that dynamic compaction is substantially efficient to high backfilled ground treatment in VSC-HVDC BTB convertor stations. There are critical tamping times in dynamic compaction. When tamping times are higher than the critical number, further increase of tamping times contribute little to the holistic improvement of foundation. With the increase of drop energy, the bearing capacity of the improved ground raises exponentially. These findings can be helpful for the foundation design of future VSC-HVDC BTB convertor stations.
Evaluation of Development Effect of Weak Base ASP Flooding In Secondary Oil Reservoirs
Authors: Yu Wang 
Published: December 2019

Abstract
A set of EOR technologies have been formed in a development area after the exploitation of ASP pilot zone and industrial demonstration zone. Since 2015, the industrialization promotion of weak base ASP flooding has been realized. At present, 4 blocks have been invested and all of them have achieved good development effect. In order to better understand the rule of ASP flooding, further broaden the EOR potential and guide oilfield development more efficiently, this paper will evaluate the ASP flooding development effect and summarize the dynamic change law based on an existing block. The results show that after entering in low water period, the injection pressure rises above 25%, the inhaled index falls to 45% above, the liquid producing index falls 36.3% on average, comprehensive water cut largest decline reaches 12.36%, oil increase letter number reaches one time above. At the end, the paper gives the classification response characteristics of well group, and provides a basis for other weak base ASP flooding blocks.
Development and Application of SZ-type double-back straight tower with live replacement overhang insulator suspension line card
Authors: Jun Ma , Yonggang Shi , Gang Dong , Fuxing Gong , Kegang Wei , Xin Su , Yu Ding , Zhu Wang 
Published: December 2019

Abstract
In recent years, SZ-type tower and other angular-type cross-bearing head plus slings of the cross-stretcher structure of the tower on-line has been widely used. However, there is currently no special card in line with it. Therefore, this paper puts forward the use of aluminum alloy as a material developed that can be stuck in the cross-stretcher head of the 220 kV SZ-type double-back straight tower with live replacement overhang insulator hanging line card. It includes a screw lever, a wire lever with a hook hook in the lower part of the bar, and a screw lever connected to a crossbar card. The cross-stretcher mount has a cavity in the middle and a screw seat on both sides, with each screw lever standing on the screw seat when used. The cross-load mount holder is on the sZ-type double-back straight-line tower cross-mounted plate, which can be used for installation on the SZ-type tower. It provides a screw hanging point when the SZ-type tower is charged to replace the insulator. It has the characteristics of simple structure, reasonable and safe use.
A Simple Method of Signal Control for Rotary Interchange
Authors: Jin Yi , Han Xinyu , Wu Xuezhu , Zhang Fei 
Published: December 2019

Abstract
The existing rotary interchange has the problems of heavy traffic and short weaving section. Taking the 2-level rotary interchange as an example, a simple two-phase signal control method is put forward by analyzing traffic conflict and calculating signal timing parameters based on Webster including requirement for the length of red intervals. The applicable road geometry of signal control method is also discussed. Finally, Vissim simulation and evaluation are carried out. Through comparing traffic operation before and after the optimization, the results show that the simple signal control method has a positive influence on rotary interchange traffic.
Patent Analysis of Intelligent Control Technology for Intelligent Refrigerator
Authors: Yao Xiao , Wu Jie 
Published: December 2019

Abstract
The global patented technology in the intelligent control field of intelligent refrigerators has problems such as uneven development and low activity of overseas patent operations. Enterprises cannot accurately grasp the technological development trend in the field of intelligent refrigerator intelligent control. Based on PatSnap patent database, in-depth analysis of patent application changes in the field of refrigerator intelligent control, overseas patent distribution in the world, distribution of key patent technologies and patent operations, to find out the hot technology in the field of smart refrigerator intelligent control Identify patent risks and provide valuable patent information for Chinese intelligent refrigerator companies.