bluuebunny/crossref_metadata_2025_split huggingface dataset:
Preliminary Study on Antimicrobial Activity of Fermentation Broths of Oudemansiella Mucida
Authors: Deng Xu , Li Risheng , Zhang Yimei , Li Rongrong 
Published: March 2020

Abstract
Oscillation culture was carried out on Oudemansiella mucida., the obtained fermentation broths were extracted with ethyl acetate, n-BuOH in succession to give three sections: extract of ethyl acetate, n-BuOH and the remained fermentation broths. Their antimicrobial activities against five common phytopathologenic funguses were determined by filter paper method and solid culture medium method. The result indicated that the fermentation broths markedly inhibited five phytopathologenic funguses. The metabolites with antimicrobial activity were mainly congregated in EtOAC extract, with the minimal inhibiting concentration (MIC) for Alternaria brassicae, Alternaria longipes and Gloesporum fructigenum being 10 mg/mL, the MIC for Fusarium graminearum and Alternaria alternata being 5mg/mL.
Preparation and Application of Flexible Conductive Fabric Based on Silk
Authors: Zheng Songming , Xu Chuanqi , Zhang Kaiwei , Yang Xin , Li Ranran , Liu Yuqing 
Published: March 2020

Abstract
Applications in wearable and implantable electronic information products have increased in recent years, and traditional conductive materials have poor flexibility. To meet the trend of flexible, wearable and implantable electronic devices, flexible conductive materials are widely accepted. Here, we report on a method of preparing a flexible conductive textile material. The graphene is finished onto the surface of the silk fabric by multiple impregnation-reduction methods, and the silk fabric retains good flexibility while obtaining conductivity. Flexible conductive silk also has a good temperature and strain response, and its electrical resistance changes with temperature and strain. The obtained flexible conductive silk fabric has the advantages of both silk fabric and graphene, it has broad application prospects in wearable devices, health care monitoring, and human-machine interface.
A Discriminant Analysis of the Financial Indicators of the Innovative Pharmaceutical Enterprises
Authors: Zhang Yuanyuan , Jia Yu 
Published: March 2020

Abstract
This study examines the value relevance of financial indicators and pharmaceutical innovation. Discriminant analysis is used to study the difference of the financial indicators of innovative pharmaceutical enterprises and the generic pharmaceutical enterprises during the sample period between 2013 and 2017. The results show that operational capacity, debt-paying ability, growth capacity and research and development capabilities are important indicators for identifying innovative pharmaceutical companies. Investors can take these financial indicators into consideration when measuring the innovation ability of pharmaceutical enterprises.
Influence of the external flow on the departure of vapor bubbles
Authors: Shan Xiaopeng , Nie Deming 
Published: March 2020

Abstract
The two-dimensional lattice Boltzmann method (LBM) is used here to numerically study the behaviors of phase change and vapor bubble departure in the presence of external flow. The external flow is induced by the action of shearing applied on the top boundary in this work. The bubble departure pattern is preliminarily revealed under different intensities of shearing. Furthermore, the influence of external flow on the heat transfer is examined. It has been found that the vapor bubbles are likely to depart from the heated plates in an alternative way. The external flow is shown to greatly enhance the heat transfer between the heated plates and the cold liquid. The velocity fields are also presented.
Synthesis and sustained release mechanism of slow release polycarboxylate superplasticizer
Authors: Sun Jian , Yin Xueyu , Cui Bo , Zhao Chunyu , Miao Guikun 
Published: March 2020

Abstract
Based on the research and experiment on the mechanism of carboxylate ion protection and release, based on this system, it is determined that dimethyl carboxylic acid is the main sustained-release component, and then the sustained-release system is optimized to obtain excellent performance. A slow release polycarboxylate superplasticizer. Through the experiment of different cement compatibility, water-reducing agent saturation, concrete slump retention and mechanical properties, the dosage, working performance and strength of the target slow-release polycarboxylate superplasticizer were clarified. It is proved that the experimentally prepared sustained-release polycarboxylic acid superplasticizer has a good sustained release effect in application.
A bendable solid-state supercapacitor based on alkaline polyvinyl alcohol
Authors: Sha Zhiyuan 
Published: March 2020

Abstract
Flexible electrochemical double layer capacitors (EDLCs) based on polyvinyl alcohol (PVA) electrolytes are fabricated. During the process, electrode materials are mixed into a film and pressed on the current collector instead of the traditional coating method. In order to explore the electrochemical performance of this kind of supercapacitors, a series of testing method including cyclic voltammetry, Galvano static charge discharge testing and electrochemical impedance spectroscopy. It is revealed that the electrochemical capacitor based on PVA exhibits excellent electrochemical performance and long cycle life. The specific capacitance for the EDLC based on PVA reaches 187F/g at the current density of 1A/g, and the specific capacitance decreased with the increasing of the scanning rate. The results indicate that the supercapacitor cell capacitance keeps more than 70% after 10000 charging and discharging cycles.
A Multi-Feature Fusion Based Vehicle Logo Recognition Approach for Traffic Checkpoint
Authors: Ding Sha , Wu Hongyang 
Published: March 2020

Abstract
In this paper, we propose a vehicle logo recognition algorithm based on multifeature fusion using a hierarchical classification approach, which can be applied at traffic checkpoints. First, a typical database of vehicle logos is set up based on surveillance images recorded at traffic checkpoints. Next, three features, HOG, Curvature histograms, and GIST, are extracted and three corresponding first level classifiers are trained using the support vector machine (SVM) algorithm. The probability that a certain test sample belongs to a certain kind can be obtained by predicting the sample with each level-1 classifier. All these probabilities are then concatenated and used as features for training a second-level SVM classifier. The resultant new classifier is used for classifying the vehicle logos of the test set. The experimental results show that the proposed approach to hierarchically integrate multiple features provides excellent accuracy for the vehicle logo recognition task.
Study on acoustic properties of multilayer impedance materials
Authors: Su Jintao , Zheng Ling , Wang Bangdong 
Published: March 2020

Abstract
Composite materials are produced using advanced material preparation techniques to optimize a combination of materials with different properties to form new materials. Such materials have the composite properties of their constituent materials. Composite materials have been widely explored for their use in the field of acoustic noise reduction as well as in automobile, aviation, and other fields. To further enhance the acoustic characteristics of composite materials, this letter proposes a multilayer composite structure comprising a resistive screen structure material (perforated screen material), foam, and fiber. The impedance tube method is used to investigate the rigid wall absorption performance and flow field transmission loss in seven types of resistive screen composite materials of various flow resistivities and porosities. The results show that the acoustic absorption and acoustic insulation performance of the resistive screen composite material are better than the foam–fiber multilayer material. The maximum acoustic absorption coefficient reached 0.95 at 3000 Hz and the maximum difference in sound reduction was 6.5dB. This resistive screen material provides a new dimension to the design of new materials.
Effect of Morphology on Electrochemical Performance of Chalcopyrite Cathode
Authors: Ding Wei , Bi Dapeng , Shen Jie 
Published: March 2020

Abstract
Chalcopyrite was synthesized with various reaction precursors and solvents, and plate-, rod-, and sphere-like chalcopyrite can be obtained. Our results show that rod-like chalcopyrite has higher discharge capacity, better rate capacity and cycle performance than others.
Research and application of a domestic system of wind power directly stirring heating---Taking northeast China as an example
Authors: Zhang Linghan , Yao Qiuchen , Ke Li 
Published: March 2020

Abstract
In northeast China, wind in winter is strong and its energy has high sustainability, so this new type of household wind power stirring heating system focuses on stirring liquid(paraffin oil mixed with water according to the ratio of 1:1)by wind power directly, which eliminates the conversion of electrical energy and has high efficiency. The system causes energy saving and emission reduction and improves the conversion efficiency. In order to improve the situation where heating relies on coal burning or straw burning in rural areas in winter, based on the principle of energy saving, emission reduction, environmental protection and economical principles, we combine the wind energy and heating tactfully and it truly adjusts measures to local conditions.
Adjustment of Active and Reactive Power of Synchronous Generator in Grid-connected Operation
Authors: Sun Huiqiang 
Published: March 2020

Abstract
The regulation of active power and reactive power of generators in grid-connected operation has always been an important research issue of power plants and power grids for efficient use of energy and stable operation of motors. In daily life, residential electricity consumption is always changing, more at night and less during the day; more in summer and winter, less in spring and autumn, so in order to make rational use of resources and improve the economy, real-time monitoring and regulation of active power are needed. And most of the loads connected to the grid are inductance loads, so a power system should load a lot of reactive power besides active power. According to statistics, the reactive power required by an asynchronous motor in a power system accounts for 70% of the total reactive power supplied by the power grid, 20% of transformers and 10% of other equipment. The reactive power supplied by power grid is shared by all generators, which will bring about the problem of how much each generator should bear and how to regulate the reactive power of generators. In this paper, the regulation methods of active and reactive power, the regulation range, the power angle characteristics and the electromagnetic relationship of active and reactive power are analyzed in detail.
Study of A Quality Monitoring System of Electric Power Using Internet of Things Technology
Authors: Ni Mengxian 
Published: March 2020

Abstract
For the purpose of ensuring the safety of energy supply, as well as satisfying the growing demands of production and living for power and energy, based on the operating principles of radio frequency identification (RFID) technology of Internet of Things, the basic architecture of power Internet of Things is constructed, and a quality monitoring system of electric power is designed. Also, in combination with the chaotic time series theory and the radial primary function network, a modeling forecasting method is proposed. By using this model, the temperature of device hot spots in the substation monitoring system is forecast. The results show that the development curves of the forecast value and the true value are similar, which indicates that the forecast value is close to the true value. Therefore, the error between them is small. The modeling forecasting method combining the chaotic time series theory with the radial primary function network proposed in this study can forecast the temperature of device hot spots in substation monitoring system effectively. In addition, the model also has better forecast accuracy, which can be applied to the forecast and analysis of device temperature.
Fully digital wind farm monitoring and inspection system based on AR augmented reality technology
Authors: Xing Xinyue 
Published: March 2020

Abstract
The wind power is a vigorously developed clean energy in China recent years. It’s installed capacity of our country is increasing year by year. Since 2012, the new wind power installed capacity in China has became the first place all around the world. By the end of 2016, our wind power installed capacity has added a total of 87 million 580 thousand kilowatts. Besides the rapid growth of wind power, there are still many problems in China’s wind power business. In order to solve the following problems: the inspection environment of the wind farm equipment is quite complex, the efficiency is not high enough, and the statistical data of the inspection is not good enough, this paper puts forward the “full digital monitoring and inspection platform of wind farm based on AR augmented reality” as the solution of the problems. The project implements fan positioning, model-assisted inspection, process recording, and expert remote assistant APP functions. It promotes the development of wind farm detection and inspection, which can greatly improve the inspection efficiency of wind farms and reduce the workload of inspectors.
Integrated scheduling method of intelligent distribution network DSR and renewable energy based on MCS algorithm
Authors: Qiu Fengkai , Fang Cheng , Zeng Ming , Tian Shi , Zheng Zhengxian 
Published: March 2020

Abstract
In the intelligent distribution network environment, the demand side resources (DSR) are the electric vehicle, energy storage, controllable load and other resources located in different locations, showing the characteristics of small single capacity and decentralized layout. How to build a multi time scale integrated scheduling framework of demand side resources and renewable energy, to schedule the distributed demand side resources in an orderly manner, and to realize the efficient integration of demand side resources and renewable energy, are the key problems of demand side resources participating in grid scheduling. Based on this, this paper proposes a multi time scale integrated scheduling method based on hierarchical scheduling for DSR and renewable energy in intelligent distribution network, and uses the modified cuckoo search algorithm (MCS) to solve the problem. The effectiveness of the proposed model and algorithm is verified by the integrated scheduling of electric vehicles and renewable energy in intelligent distribution network.
Research on distributed photovoltaic power generation prediction based on grey model for energy Internet of city
Authors: Li Hao , Liu Chang , Li Wen , Liu Chao , Li Bin 
Published: March 2020

Abstract
Power load forecasting is one of the basic tasks of power system dispatching coordination and rational arrangement of energy production. Reasonable power load forecasting can ensure safe, continuous and stable energy supply, and provide reasonable guarantee for the safe and economic operation of power system. Based on Beijing’s new energy and renewable energy online monitoring system, this paper collects power generation data, environmental data and equipment working condition data, and uses gray model prediction method to predict the load of XXXXX photovoltaic power station, and obtain more accurate power load data, which is complex fluctuation. The photovoltaic power generation project provides the basis for post-generation planning.
Study on the Connotation and Framework of Regional Integrated Energy System
Authors: Zhu Huan , Zheng Kuan , Zhang Shuo , Chen Yunfei , Li Hu , Li Nan , Chen Chen 
Published: March 2020

Abstract
Under the background of energy interconnection, the traditional mode of energy supply, which is based on production to meet the demand, will be completely overturned. All participants in the energy interconnection are both “producers” and “consumers”. Interconnection and sharing will become the core values in the new energy system. This paper mainly expounds the connotation and characteristics of regional integrated energy system, and at the same time constructs the overall framework including the inner “three-level structure” and the external “three-function system”. Finally, it preliminarily proposes the technical framework of regional integrated energy system including a variety of key technologies.
Study on Influence of Voltage Deviation on Loss of Low Voltage Distribution Network
Authors: Liang Zuquan , Li Yingyuan , Zhao Lei , Tao Shun , Fan Yijing 
Published: March 2020

Abstract
Voltage deviation is one of the important power quality problems. Studying its impact on the power loss of low voltage distribution network is of great significance for the development of loss reduction measures and the realization of economic operation of power grid. The calculation models of transformer and line loss considering voltage deviation are derived firstly. The influence of voltage deviation on iron loss and copper loss of transformer and line loss under different load types are analysed in depth. The relationships between voltage deviation and additional loss of low voltage distribution network are obtained. The simulation verifications are carried out in PSCAD/EMTDC, which prove the accuracy and effectiveness of the calculation models.
Economic Incentive to Transmission Investment Considering Environmental Cost
Authors: Gao Xiao 
Published: March 2020

Abstract
The economic incentive to transmission investment considering environmental cost is investigated in this paper. The definition of economically stimulating signals to transmission investment is given. Based on the transmission line optimal investment planning model proposed in Brazil, the transmission planning model with economic stimulation is proposed. What’s more, the external cost of environment is taken into account in this above transmission planning model. This model is suitable for the merchant transmission plan. And it also provides transmission investors a decision-making reference. The effectiveness of the economic stimulation to transmission investment considering environmental cost is verified by the 5-bus system.
Application of Flexible DC Transmission Technology in Power Grid under Large-scale Development of New Energy
Authors: Zhang Weili , Zhang Tianning 
Published: March 2020

Abstract
Based on the analysis of the current situation of new energy development and the prominent problem of power abandonment in China, this paper discusses the application of flexible direct current transmission technology in power grid under the large-scale development of new energy in order to give full play to the advantages of optimal allocation of resources in power grid, improve the balance ability of power grid, expand the scope of new energy absorption, and fully analyze the advantages and disadvantages of flexible direct current transmission technology.
A Novel Active Disturbance Rejection Control for the Quad Tilt Rotor in Conversion Process
Authors: Wang Zhigang , Li Jianbo 
Published: March 2020

Abstract
The quad tilt rotor (QTR) has complex dynamics characteristics, especially in conversion mode. It is difficult to model the QTR dynamics and the environmental factors have a great influence on it. To solve the problem of control in conversion mode of QTR, this paper carries out the design of the controller based on improved active disturbance rejection control (ADRC). According to the characteristics of flight in conversion mode, tracking differentiator (TD) is used to solve the problem of multiple integral when the system is high-order system. Extended state observer (ESO) with radial basis function (RBF) neural network is used to estimate and compensate for internal and external uncertainties, and the adaptive sliding model control in nonlinear state error feedback (NLSEF) is used to improve response speed of the controller and reduce the parameters which should be tuned. Through the flight control simulation of the QTR, the validity and rationality of the control system are verified.
Design and Signal Delay Analysis of Spinning Missile Electric Rudder Control System
Authors: Yao Qiushi , Li Lijing , Wang Siyuan 
Published: March 2020

Abstract
In order to meet the requirements of ultra-small special-purpose missiles for miniaturization, high dynamic characteristics and low signal delay of the missile-mounted rudder, and to reduce the working pressure of the navigation computer control system, a digital electric rudder control system based on MCU and H-bridge integrated power drive chip was designed and implemented. The system uses the Texas Instruments C2000 high-performance MCU as the core control unit to process the single-channel rudder position feedback signal. After the fuzzy position PID algorithm calculation, the control signal is output in the form of pulse width modulation (PWM) waveform, and the rudder control is completed by the DRV8872 power drive chip. Aiming at the problem of phase delay in missile attitude control system, the reason of delay is analyzed from the perspective of system composition. The phase delay formula is derived through theoretical calculation and sine sweep test. A method based on navigation computer deviation compensation is proposed. It has been proved by experiments that the rudder control system has good dynamic response capability and has good compensation effect on system signal delay.
Modeling Damping Force for a Translational Damper Based on Shear-Thinning Giant Electrorheological Fluid
Authors: Chu Liufeng , Yang Yi , Sun Yi 
Published: March 2020

Abstract
The mathematical model of electrorheological fluid damper which is based on the flow mode has been proposed in many articles. In this paper, a new optimization model of the giant electrorheological fluid damper, which is based on the shear thinning mathematical model, is proposed and simulated numerically with Matlab. The mathematical model of giant electrorheological fluid damper without considering the shear thinning model is also simulated numerically in this paper. The data of the damping force-excitation displacement of the damper are tested by the 810 Material Test System. By comparing the simulated data with the experimental data, it can be seen that the model considering the shear thinning mode can predict the damping force that the damper can produce.