bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of Different Pesticide Treatments on Soft Rot Control and Yield of Konjac
Authors: Jiang Xiong , Wang Zhengxiang , Yang Fuqing , Chen Zhizhou , Yang Sumian , Yan Zesheng , Qin Yaoguo 
Published: March 2021

Abstract
To screen pesticides with improved disease control and increase the yield of konjac plant, we grew one-year-old konjac corms, determined the field control effect, growth indicators, photosynthetic indicators, and yield of konjac plants, and compared the results with those obtained after treatments with three kinds of antibiotic pesticides, three kinds of copper fungicides, chloroisobromine cyanuric acid, bismerthiazol, and water (as control). The results showed that the soft rot incidences in konjac plants after treatment with several pesticides were significantly lower than that of the control (CK). The control effects of tetramycin, copper succinate, and chloroisobromine cyanuric acid were high, the growth status of the plants treated with cuprous oxide, tetramycin, and copper succinate improved; the net photosynthetic rates of each pesticide treatment showed no significant difference from that of the CK, and the yield was the highest with copper succinate and tetramycin. This study demonstrated that certain copper fungicides or antibiotic pesticides can be used for the control of konjac soft rot, but their effects are different. The comprehensive comparison suggests that the effects of copper succinate and tetramycin are the best for the disease control and yield increase of konjac.
Exploration on key factors for overall migration into olive oil of food-contact silicone
Authors: Hu Jinmei 
Published: March 2021

Abstract
To ensure the accuracy of the overall migration into olive oil of high risk food-contact silicone products, the key factors of the test method on the base of EN1186-1 &2 were analyzed and discussed. Two sample conditioning methods for the silicone products were compared, and the extraction times for olive oil in the samples were investigated, as well as the change trend of the actual temperature of olive oil at the set temperature. Using calcium chloride dryer conditioning method can achieve the same effect of constant temperature and humidity method, and can significantly reduce the conditioning time. For silicone products that are easily absorbed oil, the olive oil in the sample should be extracted at least twice. The temperature of the oven should be increased appropriately to meet the requirements of the temperature of olive oil. The water conditioning of samples, the extraction times of olive oil and the preheating temperature of olive oil are the key factors for olive oil overall migration of food-contact silicone, which can provide a reference for testing workers of food-contact materials.
Research on self-insulating block composed of ground rice husk and recycled aggregate in severe cold area
Authors: Shi Daquan , Fang Guangxiu , Li Pu , Yang Xu , Wu Xuanru 
Published: March 2021

Abstract
Aiming at severe cold areas, this paper replaces 5% cement and 30% natural gravel with the same amount of ground rice husks and recycled aggregates respectively, and designs a new self-insulating block structure model compared with traditional blocks. This new block is easy to assemble, short construction period and good seismic performance. The 28d splitting strength of concrete and 28d compressive strength of blocks are determined. The results showed that this mate is better than the cracking strength of the block that can act as a MU10 non-load-bearing wall, and the standard test piece is better than ordinary concrete.
Study on relationship between underlying surface of typical warping dam and erosion and sediment yield
Authors: Li Ma , YongXin Ni , XiZhi Lv , QiuFen Zhang , Li Li , LinNan Liu 
Published: March 2021

Abstract
Under the condition of rainstorm, the underlying surface is an important factor of erosion and sediment yield, and an important embodiment of the process of soil erosion and the law of sediment deposition. This paper analyzes the soil erosion of warping dams with different underlying surface characteristics based on the data of typical warping dams, such as sedimentation amount, sediment retention modulus and underlying surface. The results show that: (1) the average slope of dam55, dam97 and dam011 is 27.55°, 30.79° and 34.68° respectively, and the erosion modulus is 11020t/km2, 15204 t/km2 and 22579 t/km2 respectively; the average slope of dam55, dam97 and dam011 is positively correlated with the erosion modulus, and the correlation coefficient is 0.9889. (2) The sedimentation depth and erosion modulus of dam011 are significantly higher than those of dam55 and dam97. Under the condition of rainstorm, the average slope of watershed is an important factor of soil erosion, which can better reflect and predict the comprehensive intensity of soil erosion.
Mathematical model-based study of Scottish herring and mackerel migration
Authors: Yang Zhenzhen , Yue Jiaxin , Yu Yadan , Zhang Yuehua , Li Lan 
Published: March 2021

Abstract
The global sea temperature continues to rise and reaches a new high in 2019. This phenomenon will force the migration of Scottish herring and mackerel to higher latitudes and severely inhibit the development of small-scale Scottish fishing companies. This paper establishes a grey prediction model, a regression analysis prediction model and a fuzzy comprehensive evaluation model to explore the migration locations of herring and mackerel in the next 50 years, and to formulate appropriate business strategies for small-scale Scottish fishing companies. The model results show that in the next 50 years, herring and mackerel will migrate to Greenland and Norwegian waters, and will migrate out of the fishing range of small fishing companies from 2046 to 2053. Therefore, reducing labour costs is the most appropriate business strategy.
Synthesis and Properties of Hydrazine Picrate
Authors: Mu Xiaogang , Liu Bo , Li Zhaoxiang , Yang Jingjing 
Published: March 2021

Abstract
Picric acid was reacted with liquid propellant anhydrous hydrazine to synthesize anhydrous hydrazine picrate. Its structure was characterized by elemental analysis, infrared spectrum analysis, nuclear magnetic resonance, and its thermal decomposition performance was analyzed by TG-DTG and DSC. The thermal decomposition of anhydrous hydrazine picrate was studied by using Kissinger method and its activation energy was calculated. The critical temperature of thermal explosion was calculated by using the characteristic data of non-isothermal DSC curve. The results shows that the thermal decomposition of anhydrous hydrazide is mainly between 179.8∼200.9°C, the decomposition process is exothermic reaction, the melting point is about 140°C, the non-isothermal kinetic equation is ln(β/T
p

2
)=-17652 (1/T
p)+28.009, the activation energy of thermal decomposition is E=146.76kJ/mol, pre-exponential factor lnA=30.34, and the critical temperature of thermal explosion T
b=175.3°C. Anhydrous hydrazine picrate has the characteristics of simple synthesis, rapid reaction and good thermal stability. It provides a new way for the disposal and reuse of anhydrous hydrazine.
Multi-Objective Sustainable Planning of Chemical Production Chains
Authors: Zhang Zetian , Liu Zhenghan , Jia Xiaoping 
Published: March 2021

Abstract
Sound management of chemicals is one of key contributors for achieving of the Sustainable Development Goals. The aim of this work is developing a multi-objective planning framework on the early planning and decision-making for chemical production processes, in order to obtain the maximum economic benefits, minimize the risk of possible chemical accidents to people, and minimize the environmental risk of production routes. GM (1, 1) model was established to predict the price trend and demand change of chemical products from 2020 to 2030. Combining three objective functions with the production chain constraints, a mixed integer linear programming model is developed. Polyvinyl Chloride production chains are taken as an example.
Status and Future Development Prospects of CSP
Authors: Ruidong Wang , Jun MA 
Published: March 2021

AbstractAs a type of energy which is clean, renewable and pollution-free, solar energy possesses a large amount of reserves but its energy flux density is low. Concentrating Solar Power (CSP) technology is an effective way of utilizing solar energy, which can be a replacement of thermal power. By ways of realizing peak load regulation in the grid, and greatly improving the transmission capacity of the power grid, CSP can provide a solution to the problem of abandoning wind and light in northwest China, and promote the sustainable development of clean energy in the whole country. In this paper, the key technologies of CSP are reviewed, and the present developing situations at home and abroad are summarized. In addition, the problems of CSP industry are analyzed and a series of solutions are proposed. Finally, the future directions of CSP and several improving measures are prospected.
Load Shedding Model and Algorithm Based on Minimum Power Outage Lose
Authors: Wang Yasong , Cao Zenggong , Wang Chunyi , Peng Bo , Du Peng , Guo Yinglei , Wei Zhen , Dong Xiaoming 
Published: March 2021

Abstract
This paper combines the power outage loss caused by load shedding with the optimization problem of load shedding during power shortage, and proposes a load shedding model that seeks the minimum power outage loss under the system’s security and economic constraints. The model is a kind of optimal power flow. In order to reduce the complexity of solving the model, this paper adopts an improved linear programming algorithm to solve the model. With the help of Jacobian matrix, the objective function and constraints of the system are linearized and the linear optimal solution in the iterative space of control variables can be found. Through multiple iterations the scheme with the minimum power outage loss is obtained that satisfies various constraints while the total power generation cost of the system is minimized The correctness and superiority of the model and algorithm are verified in the IEEE14-bus system.
A new method of safety detection in high-rise building curtain walls based on natural vibration frequency
Authors: Chen Chen , Xie Mowen , Du Yan , Pang Wei 
Published: March 2021

Abstract
With the development of curtain wall technology, the unit curtain wall has been widely used as a decorative component of high-rise buildings, but it has brought great difficulties to the later safety inspection. Based on the theory of thin-slab vibration, the laser vibration measurement technology in this paper is used to analyze the relationship between the multi-order natural frequency and the safety status of the point-supported experimental curtain wall model. At the same time, a corresponding finite element model is established to further quantify the natural frequency and restraining force on the curtain wall. The result shows that there are different relationships between natural frequencies of different orders and the safety of the curtain wall. In actual engineering, it is more sensitive for the first-order natural frequency to changes in the safety status of the curtain wall. A new method of safety detection in high-rise building curtain walls can be achieved by the combination of remote laser vibration measurement technology.
Optimization of Energy Storage Capacity to Smooth Wind Power Fluctuation
Authors: Cao Zenggong , Wang Chunyi , Peng Bo , Wang Yasong , Du Peng , Guo Yinglei , Wei Zhen , Dong Xiaoming 
Published: March 2021

Abstract
The uncertainty and randomness of wind power generation bring hidden trouble to the safe operation of power distribution network. Combining energy storage system with wind power generation can effectively improve the output characteristics of wind power generation. In this paper, considering the investment cost of energy storage and the effect of suppressing the fluctuation of wind power output, the optimization of energy storage capacity under the scenario of wind power grid connection is studied. Firstly, the multi-objective capacity optimization model of the energy storage system is established to minimize the cost of the energy storage system and the variance of wind power system output equipped with energy storage. Then, the multi-objective optimization problem is transformed into a single objective optimization problem by introducing the weight coefficient of the objective function and the particle swarm optimization algorithm (PSO) is used to solve the problem. Finally, through the test of IEEE-33 bus distribution network system, the relationship curve between energy storage capacity and wind power fluctuation suppression effect is obtained. The results of numerical examples show the effectiveness of the proposed method.
Numerical simulation of thermal environment in 320,000 tons VLCC engine room
Authors: Niu Anqi , Guo Mingxuan , Wang Jianli , Chen Meiqi , Jin Guoliang , Wang Shenghai 
Published: March 2021

Abstract
The engine room is the power center of the ship, including the main diesel engine and many other equipment, to maintain the stable operation of equipment in the engine room, to provide a comfortable working environment for the crew. The temperature and humidity in the engine room must reach a certain standard. There are ventilation systems in the engine rooms of ships, but we don’t have a good way to direct the lay out of the ventilation system. This paper takes 320,000 tons of VLCC as an example, uses FLUENT software to numerically simulate the temperature field and velocity field in the engine room, obtains the temperature distribution of the entire engine room, analyzes the simulation results, and proposes a ventilation layout optimization plan. Finally, the full text is summarized and the plan for further research is discussed.
Study on Determination of SF6 Decomposition Based on Gas Chromatography
Authors: Yan Honghua , Zhang Chuanping 
Published: March 2021

Abstract
The current research about SF6 switchgear failures mainly focuses on various troubleshooting methods, while ignoring the impact of SF6 gas decomposition products on equipment and the types of failures they reflect, and the application of SF6 gas decomposition products to diagnose equipment failures still needs to be further explored and improved. Therefore, this paper focuses on the study of the decomposition process of SF6 under partial discharge failure, and conducts theoretical analysis of the decomposition product composition of SF6 under partial discharge failure, and detects SF6 gas decomposition products by gas chromatography. Finally, it can be concluded that when the concentration of S2F10 and S2OF10 is about 5μL/L, the switchgear is likely to have a partial discharge failure. At this time, the maintenance personnel should deal with it in time to ensure that the switchgear can be put into use normally.
Research and Application of 66kV Internal Wedge Type Fast Tension Clamp
Authors: Jun Ma , Yonggang Shi , Gang Dong , Fuxing Gong , Zhu Wang , Lei Wang , Yu Ding 
Published: March 2021

Abstract
This research belongs to the field of live working of power transmission line, that is, 66kV internal wedge tension fast clamp fixture. The utility model comprises a clamp cone barrel which can pass through the conductor in the middle, a ring sleeve is fixed on the back of the clamp cone barrel, U-shaped bolts are inserted and screwed on the rear end faces of both ends of the ring sleeve, a line clamp connecting the insulator string is connected on the rear end of the U-shaped bolt, two ends of the line clamp are provided with connecting ring holes, and a connecting pin shaft is inserted in the ring hole. The structure is simple and reasonable, and the use is safe and reliable. It can solve the problem that there is no special clamp for 66kV fast tension clamp.
Topology Automatic Identification Method for Low-Voltage Stations Based on Line Impedance Analysis
Authors: Jiang Yan , Song Xueying , Lin Hua , Zhao Yupeng , Qiu Kaiyi , Yang Chao , Dong Shidanjie 
Published: March 2021

Abstract
Aiming at the problems of high cost, low real-time performance of manual identification of low-voltage station topological structure, automatic identification methods such as instantaneous power failure method and voltage correlation analysis method, which affect residents’ electricity consumption, and the success rate is limited by application scenarios, this paper proposes a method based on multiple linear regression Line impedance analysis method for automatic identification of the topology of low-voltage stations. Based on the relationship between voltage, current, and impedance, multiple linear regression analysis is used to derive the upstream topology step by step from the bottom up to the top of the topology and then determine the station membership by voltage correlation. The cloud platform based on Docker technology and Hadoop technology is used for data distributed storage calculation, and an identification model in the context of big data is established to effectively improve the efficiency of the algorithm. Finally, the correctness of the algorithm verification is judged based on the results of manual field verification.
Spacer for Double Bundle in Phase Conductor of Transmission Line Based on Cross Universal Joint Structure
Authors: Jun Ma , Yonggang Shi , Gang Dong , Fuxing Gong , Zhu Wang , Lei Wang , Yu Ding 
Published: March 2021

Abstract
This research belongs to the field of transmission line, that is, the double bundle inphase conductor spacer of transmission line based on cross universal joint structure. The utility model comprises a spacing rod, two ends of the spacing rod are provided with wire clamps, and the spacing rod and the wire clamp are connected by a cross universal joint, that is, one end of the spacing rod is provided with a fork, the fork is movably connected with two opposite axes of the cross shaft, the back end of the wire clamp is provided with a wire clamp fork, and the fork of the wire clamp is movably connected with another two opposite axes of the cross shaft. The utility model is to replace the ball joint structure of the existing double bundle conductor in the same phase spacer with the cross shaft universal joint structure, so as to increase the allowable range of movement of the spacer, avoid the fracture due to the force beyond the range, and meet the requirements for the installation and use of the double bundle conductor in the same phase of the transmission line. The structure is simple and reasonable, and the use is safe and reliable, which solves the problem that the spacer of the in-phase conductor of the original double bundle conductor of the transmission line is easy to break.
Design of electromagnetic compatibility test platform for transformer fire-fighting nitrogen injection extinguishing system
Authors: Wei Defu , Li Shengchuan , Wu Xinpeng , Song Yundong , Tan Rui 
Published: March 2021

Abstract
The transformer fire-fighting nitrogen injection extinguishing system plays an important role in preventing transformer fires in the field of power transformation. However, the fire-fighting system operating on site is often misoperation or non-operation caused by electromagnetic interference and other factors, which affects the reliability of transformer fire extinguishing. This paper builds an electromagnetic compatibility platform for the fire control cabinet of the transformer oil discharge and nitrogen injection system to develop the simulation system of the oil discharge and nitrogen injection fire extinguishing device, and study the factors affecting the reliability of the oil discharge and nitrogen injection fire extinguishing device. Electromagnetic compatibility test refers to a test that uses electromagnetic interference detection equipment and electromagnetic interference generation equipment to assess the electromagnetic compatibility of systems and equipment under laboratory or external environmental conditions. The electromagnetic compatibility test is mainly divided into electrostatic test, electric fast pulse EFT, surge impact and so on.
Discussion on Supervision and Inspection Method of High Temperature Bolt of Steam Turbine
Authors: Tian Chengchuan , Jiang Chong , Gao Zhiwei , Zhao Hai 
Published: March 2021

Abstract
Based on the failure analysis of high-temperature bolts in a thermal power plant, this paper proposed that the fracture mechanism of high-temperature bolts is mainly creep fracture. According to the bolt replacement and rejection criteria, the effectiveness of the current bolt supervision and inspection method was analyzed. It was proposed that the power station should strengthen the creep deformation measurement at the thread of the high-temperature bolt part, not just the screw part.
Failure Analysis for Disconnector Current Transfer Contact Falling off GIS Gas Chamber
Authors: Rong Huang , Yi Xie , Kejian Ouyang , Xianhui Cao , Chao Feng , Jun Wang 
Published: March 2021

Abstract
The withstand voltage test of GIS gas chamber disconnector in a new project of transformer substation was not passed. When the cover of the GIS gas chamber was opened, it was found that phase B of “E” rings current transfer contact and the corresponding accessories fell on the basin insulator at the bottom, and the current transfer contact falling off was the main reason for failing the withstand voltage test. Failed phase B & phase A of “E” rings and new sample were analyzed by size and weight test, hardness test, metallographic structure analysis, clamping force calculation and scanning electron microscopy (SEM) analysis. The analysis results show that the thickness value of “E” rings was less than standard value and the weight was not qualified, especially opening width and hardness of failed “E” rings were unqualified and had abnormal microstructure. Unqualified “E” rings and clamp failure caused current transfer contact to fall off.
Research on Strategy of distributed energy storage aggregators participating in peak load regulation auxiliary service
Authors: Dunnan Liu , Yuan Gao , Tingting Zhang , Jiahao Liang 
Published: March 2021

Abstract
In view of the peak shaving problem caused by high proportion of renewable energy connected to the grid, this paper proposes a trading mode in which the distributed energy storage aggregator participates in the peak shaving auxiliary service market, analyzes the operation mode of DSAP participating in peak shaving auxiliary service, and puts forward the optimization model and scheduling strategy of DSAP participating in peak shaving. The feasibility and effectiveness of DSAP participating in peak shaving auxiliary service are verified by numerical simulation.
Highly mesoporous and chemically bonded Fe3O4/N-doped carbon nanocomposite with an outstanding cycling life as lithium-ion-battery anode
Authors: Li Zhenwei , Li Jiayang , Han Meisheng 
Published: March 2021

Abstract
Owing to high theoretical capacity (926 mAh g−1), Fe3O4 has achieved much focus as a prospective anode material for lithium-ion batteries (LIBs). A one-step vapor-pressured induced approach considering the synthesis of chemically bonded Fe3O4/N-doped carbon nanocomposites (Fe3O4/NC) via Fe-O-C and Fe-N-C, together with the encapsulation of Fe3O4 nanoparticles (∼80 nm) into highly mesoporous N-doped carbon matrix via pyrolyzing the mixture of iron oxalate and dimethylformamide in a sealed vessel, does not exist at present. As LIB anode, the Fe3O4/NC presents a high capacity of 1250.2 mAh g−1 at 0.1 A g−1, an outstanding cyclability with a capacity of 600.1 mAh g−1 after 4000 cycles at 5 A g−1, and a high rate capability (244.8 mAh g−1 at 20 A g−1). Such excellent performances can be ascribed to its unique structure that Fe3O4 nanoparticles tightly encapsulated into highly mesoporous N-doped carbon matrix can increase active sites, electrical conductivity, and cyclability.