bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis and research on ultimate stress of main bearing block of wind generator
Authors: Wang Na , Fan Lei 
Published: November 2020

Abstract
As an indispensable part of wind turbine, bearing block is subjected to alternating load or impact load for a long time, so it is very important to analyze its dynamic performance and vibration. In order to improve the vibration resistance of the structure, this paper relies on the powerful modal analysis function of ANSYS software. In the analysis, the finite element optimization method was used to analyze the main stress and ultimate strength of the main bearing block of the wind generator. Furthermore, the results are used to guide the optimization of bearing structure.
Microchannel cold plate heat transfer and flow resistance characteristics calculation and structure optimization
Authors: Chen Xiaogen , Wang Xuesheng 
Published: November 2020

Abstract
This paper designs a microchannel liquid cold plate suitable for array multi-chip cooling. The influence of aspect ratio of rectangular cross section on heat transfer and flow performance of microchannel cold plate was studied by numerical analysis. The optimal ratio of height to width of rectangular section is selected and its structure is optimized. The results show that when the equivalent diameter of rectangular cross-section is fixed, the friction coefficient f and Nusselt number Nu increase with the increase of aspect ratio of rectangular cross-section; after optimizing the structure of the channel, the microchannel cold plate exhibits good heat transfer characteristics of low pressure drop, realizing effective heat dissipation and meeting the requirements of pressure drop.
Analysis and application of the relationship between wind power curve and power generation based on operating data
Authors: Wang Pingchuan , Zhang Yuanpeng , Yuan Shuai , Li Junen , Wang Dehua , Wang Yuejiao 
Published: November 2020

Abstract
Wind power curve has a certain promotion effect on increasing the power generation. Firstly, this paper analyzes various factors that affect the power curve of a wind turbine, and establishes a mathematical model of the power curve. Secondly, the relationship between wind power generation and power curve is analyzed, and the calculation formula of annual power generation is proposed. Finally, based on the data of an actual operating wind farm, a statistical analysis of annual power generation is carried out, and the power curves of two typical units is compared to analyze the causes. Through the analysis of examples, the effectiveness of the proposed method is verified, and it can provide a reference for improving the operation level of wind turbines.
Research and design of the smart field digital surgery system for emergency medical rescue
Authors: Zhao Xiuguo , Meng Lingshuai , Tan Shulin , Su Chen , Han Junshu , Sun Jinggong 
Published: November 2020

Abstract
Natural disasters happened frequently around the world resulted in vast injured persons. The injured needs immediate on-site treatment to either save life or decrease mortality rate. The field surgery system, constructing a complete field on-site treatment force, is the fundamental to provide immediate medical care for the injured. In this paper, a smart field digital surgery system, integration with remote consultation system, medical information system and self-support system, was constructed to satisfy the demand of fast surgical treatment for emergency medical rescue in complex regional environment. The field digital surgical treatment technology platform for the injured in emergency was established based on taking the control of the cleanliness of the surgical cabin, designing a remote consultation system, developing the medical information system, as well as designing miniaturization magnet of field magnetic resonance imaging (MRI) system, which significantly improved the surgical treatment capability of the field digital surgery system.
Research on the Construction of High-mobility Multifunctional Emergency Rescue Equipment Standard System
Authors: Xue Yanjie , Li Yong 
Published: November 2020

Abstract
In order to regulate and guide the high-quality development of the emergency rescue equipment industry, it is necessary to establish a perfect emergency rescue equipment standard system. The development status of emergency rescue equipment and standards was analyzed. China’s demand for emergency rescue equipment and standards was studied from different aspects. The results show that China is in urgent need of high-mobility multifunctional emergency rescue equipment and relevant standards. Based on the analysis, this paper proposes the basic principles, construction methods and dimensions model of the construction of China’s emergency rescue equipment standard system, and builds a standard system framework of high-mobility multifunctional emergency rescue equipment, which is conducive to improving the standardization construction in the field of emergency rescue and continuously improving China’s emergency rescue capabilities.
Analysis and Matching Calculation of Hydraulic Drive System of Tractor
Authors: Jing Zhou 
Published: November 2020

AbstractFirstly, the matching principle of engine and hydraulic torque converter working together is introduced. Then, the mathematical model of matching input and output between tractor engine and hydraulic torque converter is established. The least square fitting method is adopted to fit the characteristic curves of tractor engine and hydraulic torque converter. The vehicle performance is evaluated by calculating the traction characteristics of the vehicle, which not only reduces the workload, but also improves the calculation accuracy
Exploration of Intelligent Traffic Control Network Strategy for Large-scale Traffic in Xiongan New Area
Authors: Fan Haimeng 
Published: November 2020

Abstract
Aiming at the low integration of the large-scale traffic control network in Xiongan New District and the current demand for intelligent traffic development, this paper designs an intelligent traffic control network communication model by integrating various traffic control terminal devices. The model combines relevant documents such as the urban planning outline of the Xiongan New District, and is based on the concept of smart city development. The designed intelligent traffic control network strategy can be effectively applied to large-scale traffic flow scenarios and provides a powerful tool for the realization of intelligent traffic control in Xiongan New Area.
Compensation of high frequency effects in dielectric spectroscopy with the coaxial transmission line structure fixture
Authors: Zhang Yuhao , Liang Chenghua , Luo Yuan , Qin Liwei , Huang Ying 
Published: November 2020

Abstract
The application of complex impedance detection shows a trend of multi-direction development. The impedance detection technology at home and abroad has expanded from the traditional fields of physics, electricity and chemistry or other fields. Therefore, under the condition of satisfying precision, the design of equipment needs miniaturization and simplicity more and more. Aiming at this trend, a fixture with coaxial structure is calculated and processed based on theoretical knowledge, and its availability is verified by actual measurement and HFSS simulation. On this basis, the physical phenomena of multiple reflection and electrical delay that cause the measurement error are analyzed, and the analytical compensation algorithm is given.
Quantum efficiency of transmission-mode graded bandgap AlxGa1-xAs/GaAs photocathode
Authors: Yang Yang , Cao Weiwei , Xu Peng , Bai Yonglin , Zhu Bingli , Wang Bo , Qin Junjun , Bai Xiaohong 
Published: November 2020

Abstract
Graded bandgap AlxGa1-xAs/GaAs photocathode with enhanced quantum efficiency is analyzed in this study. We present the relevant quantum efficiency equations by solving onedimensional continuity equations for transmission-mode graded bandgap AlxGa1-xAs/GaAs and standard AlGaAs/GaAs photocathodes. The results show that the built-in electrical field from bandgap gradation efficiently collects photogenerated electrons in the buffer layer such that quantum efficiencies in the short regions are improved in transmission-mode AlxGa1-xAs/GaAs photocathode. The results also show that a thinner buffer layer improves the short-wavelength response of transmission-mode photocathode. Increasing the active layer thickness improves long-wavelength responses but reduces short-wavelength responses. The method presented in this work may provide better estimate of performance and guide the optimum design of graded bandgap AlxGa1-xAs/GaAs photocathode.
RPMI-1640 laden alginate hydrogel microcapsule produced by a coaxial electrohydrodynamic method
Authors: Lu Zhang , Fulong Tan , Ruiwen Jia , Yiwei Wang , Zhihai Wang , Xi Chen , Jingang Gui 
Published: November 2020

Abstract
The microencapsulation of biomaterials has a broad application prospects in the field of biomedicine. This paper introduces design and setup of a coaxial microcapsule generator based on electrohydrodynamic (EHD) method. It includes a liquid supply system, a coaxial nozzle, a collector electrode, and a high voltage power supply. The ejection process is studied via LED illumination and a high speed CMOS camera. For the shell and core materials, alginate and RPMI-1640 culture medium are applied respectively. The effects of electric voltage and flow rate on the ejection frequency and volume of micro-droplet are investigated. The generated micro-droplets react in the collector electrode with CaCl2 solution. Alginate hydrogel microcapsules are produced with RPMI-1640 included. Good encapsulation is confirmed, by fluorescence microscopy, and with RPMI-1640 stained by sodium fluorescein. The produced microcapsule may be used in biological cell encapsulation, in the future.
Defect detection algorithm of plastic 3D paint surface based on image fusion
Authors: Shiwei Chen , Pengfei Zhang , Pan Guo , Yongying Yang 
Published: November 2020

Abstract
In this paper, we proposed a new novel algorithm to detect defects cataloged as dings, dents and scratch on plastic 3D paint surface using patterned illumination. This algorithm first fuses the continuous images through different ways to obtain one fused image, which is obtained by patterned light illumination. Then, a series of morphological operations are used to obtain high-contrast image for subsequent feature statistics and defect screening. Experiments show that real-time inspection can be achieved, and the detection of plastic 3D paint surface defects can be completed within 13s, with an accuracy of 86%.
Comparative analysis of various new activation functions based on convolutional neural network
Authors: Zhu Jianhao , Chen Zong 
Published: November 2020

Abstract
With the rapid development of artificial intelligence, deep learning is developing rapidly. As the main framework of in-depth learning, convolution neural network achieved much in semantic segmentation and image classification. Based on the low speed engineering vehicle tracking system project, this paper studies the activation function, which is an important component of convolution neural network. Firstly, it summarizes the advantages and disadvantages of four traditional activation functions such as Sigmoid, and then introduces three new activation functions: Swish, FTS, and Relu-Softplus. Finally, using the TensorFlow framework, a single new activation function and a hybrid new activation function are applied to the convolution layer of the four neural networks constructed, and the image recognition comparison is performed in the data set CIFAR-10. It is concluded that the recognition precision of mixing the new activation functions is higher than that of using a new activation function alone, and the average time is shorter and the convergence speed is faster.
Calculation and Characteristic Analysis on Different Types of Shock Response Spectrum
Authors: Sun Wenjuan , Su Qiaoping , Yuan Hongli , Liu Liqin 
Published: November 2020

Abstract
Shock Response Spectrum (SRS) has been proved to be an effective standard tool for analyzing and quantifying shock environment in engineering, which is also the simplest tool for comparing shock severity and potential damage to structures. The calculation formulas of absolute acceleration spectrum, relative displacement spectrum, relative velocity spectrum and pseudo velocity spectrum are given respectively. The responses of different spectrum under typical semi-sinusoidal shock excitation are compared and analyzed, and some enlightening conclusions are obtained.
Design and Research of Servo Mechanism of Airborne Full Polarization Microwave Radiometer
Authors: Hu Yong , Yang Zilong , Hu Ye , Gao Yujiang , Xu Mingxu , Zou Qing , Li Bin 
Published: November 2020

Abstract
According to the requirements of the servo mechanism of airborne full polarization microwave radiometer, the structure was designed and divided into two parts: the azimuth mechanism and the pinch mechanism, which can scan the ground 360° continuously without dead angle. Three-dimensional model of airborne full polarization microwave radiometer was designed using CATIA in this paper. The static analysis, modal analysis and vibration analysis of the servo mechanism of airborne full polarization microwave radiometer were performed using ANSYS. The analysis results showed that the structure of the device satisfied the strength and stiffness requirements. This thesis theoretically studied the position and posture of the servo mechanism. According to the Euler coordinate transformation theory, the velocity equation, acceleration equation and transmitting torque equation were derived. By simulating the physical model of the device using ADMAS, the variation law of displacement, velocity, and acceleration over time was obtained, which provided the foundation for actual motion and control system design.
Design and Manufacture of an Innovative Vertebral Dilator with Ni-Ti Shape Memory Alloy
Authors: Qi HAN , Jing ZHOU , Chun LI , Yan GAO 
Published: November 2020

Abstract
The knitted gridding vertebral dilator with Ni-Ti shape memory alloy is designed which is to be used in the treatment of osteoporosis vertebral compressed fracture. The knitted gridding vertebral dilators with different parameters are knitted and their radial force and elastic modulus are tested; then the best knitted parameter is obtained. Taking into consideration the practical application of the vertebral dilator, the structure of both ends of the dilator is improved and an innovative vertebral dilator is obtained which can meet the clinical application needs.
Application of Improved Grey Model Based on Cumulative Method to Deformation Prediction of Tunnel Surrounding Rock
Authors: Song Guihong , Zhou Peng , Hu Qizhi 
Published: November 2020

Abstract
The traditional GM(1,1) model was improved by using the cumulative to increase its prediction accuracy. Based on the measured data of the Laomu tunnel in section 10 of shiqian to yuping expressway, the traditional grey prediction model and the improved grey prediction model were used to predict the surrounding rock deformation of the tunnel. The research shows that the improved model prediction can reduce the probability of outliers and the data series fluctuation of traditional gray prediction model, and makes the predicted value closer to the measured value. Although the improved gray prediction model has a slightly single modeling step, it can effectively increase the prediction accuracy of the model in a short period of time, and has certain reference value for similar tunnel surrounding rock deformation monitoring projects.
Fabrication of porous filter material for the integrated gasification combined cycle
Authors: Ding Yong , Lu Yuan , Bi Cheng , Yang Xu , Sun Yaqin , Ding Cong 
Published: November 2020

Abstract
The porous ceramic filter material is the most effective filter materials in the integrated gasification combined cycle. The porous silicon nitride due to its higher mechanical strength, as well as good corrosion resistance, is considered as a promising material in the integrated gasification combined cycle. In this paper, porous silicon nitride ceramics with high porosity and uniform pore structure was prepared by carbothermal reduction reaction between low-cost diatomite and carbon black. The influence of the type of sintering additives and the size of diatomite particles was investigated. Microstructures and mechanical properties of porous silicon nitride ceramics were studied by XRD, SEM and three-point bending measurement. XRD analysis showed that β-Si3N4 phase, α-Si3N4 phase, Sialon phase Si5AlON7 and glass phase Y2Si3O3N4 were detected. SEM analysis showed that porous silicon nitride ceramics was composed of rod-like (β-Si3N4 grains and uniform pores.
Experimental study on creep-ageing anisotropy behavior of 2195 Al-Cu-Li alloy
Authors: Li G P , Zhan L H , Yang Y L , Wang X 
Published: November 2020

Abstract
The problem of anisotropy in Al-Cu-Li alloy leading to low precision of formed component becomes one of important obstacles to accurately predict creep aging forming (CAF). In-planer anisotropy in creep-ageing behavior of a textured 2195-T34 alloy was investigated in this paper. The total creep deformation in the rolling direction is much smaller than that in the other directions. The tensile strength and yield strength of specimens in all directions are similarly enhanced during creep aging, indicating that the precipitation was relatively uniform in different directions. The EBSD results show that the strong texture is the main reason for the uneven strength with different angles. A constitutive model describing creep-aging anisotropy was established and the optimal parameters of the equation were obtained by optimization algorithm. The creep strain of all angles predicted by the equation is in good agreement with the experimental results. The proposed constitutive modeling can be applied to accurately simulate the CAF of 2195-T34 alloy structural parts.
Numerical Analysis of Microstructure Development during Laser Welding Nickel-based Single-crystal Superalloy Part V: Crystallography-dependent Aluminum Redistribution
Authors: Gao Zhiguo 
Published: November 2020

Abstract
The thermal-metallurgical modeling of alloying aluminum redistribution was further developed through couple of heat transfer model, dendrite selection model, multicomponent dendrite growth model and nonequilibrium solidification model during three-dimensional nickel-based single-crystal superalloy weld pool solidification over a wide range of welding conditions (laser power, welding speed and welding configuration). It is clearly indicated that welding configuration plays more important role than heat input in aluminum redistribution. The bimodal distribution of aluminum concentration along the solid/liquid interface is crystallographically symmetrical about the weld pool centerline for (001) and [100] welding configuration, while the distribution is crystallographically asymmetrical about the weld pool centerline for (001) and [110] welding configuration. Optimum low heat input (low laser power and high welding speed) with (001) and [100] welding configuration beneficially suppresses the aluminum concentration, reduces the vulnerable [100] dendrite growth region to minimize the solidification cracking susceptibility and improve weldability and vice versa. The overall aluminum concentration on the left side of the weld pool is beneficially smaller than that of right side in (001) and [110] welding configuration throughout the weld pool due to crystallographic orientation of dendrite growth regardless of the heat input. The mechanism of asymmetrical solidification cracking because of crystallography-dependent alloying solute inhomogeneity was proposed. The welding conditions, weld pool geometry, solidification conditions, dendrite selection, alloying redistribution and solidification cracking susceptibility are closely correlated. The theoretical predictions agree well with the experiment results. Moreover, the promising results facilitate the understanding of solidification cracking phenomena, and the useful model is also applicable to other single-crystal superalloys with similar metallurgical properties for successful defect-free laser welding or laser cladding.
Low-cost Immobilized Enzyme Glucose Sensor based on Laminar Flow
Authors: Qiyang XU , Changbo LIU , Hoshing WU 
Published: November 2020

Abstract
In modern medicine, glucose plays an important role in our body because glucose is the basic nutrition of human body and we can find important human healthy information through it. With the development of medicine, many diseases require glucose of blood tests including genetic diseases. People has known that the production and consumption of glucose of blood in a normal people is in a state of dynamic equilibrium and is maintained at a relatively stable level. Once the level higher or lower than the normal level, human probably have some diseases base on concentration of blood sugar like Diabetes or Hypoglycemia.Many schools or research institutions have tested biofuel glucose sensors based on laminar flow, which has desired effect in electricity generation. So in this experiments, we will find a new way to test glucose of blood by microfluidic fuel cell, and use buffer solution contained glucose to simulate blood. Then we will introduce material of electrodes, enzymes immobilization, and how to make a laminar flow channel. Finally finding the relationship between concentration of glucose and electricity current, which can show the possibility of quick detection in blood sugar. Current research shows the great potential of this cheap disposable glucose sensor, and more phenomena and applications based on laminar flow biofuel cell can be discovered in the future.
Preparation and property of unfired brick using electrolytic manganese residue
Authors: Li Changxin , Zhang Qingwu 
Published: November 2020

Abstract
The feasibility of making unfired brick from the EMR with some additives in laboratory experiments was investigated in this paper. The results show that the EMR can be used to produce unfired bricks meeting JC/T 422-2007 for Mu 25 non-fired rubbish gangue brick. XRD and SEM analyses indicated that C-S-H, calcite, gypsum were newly generated phases in the unfired brick and there are almost no large capillary holes in the unfired brick, which can increase the compressive strength of the brick. The leaching toxicity test demonstrated that the unfired EMR bricks samples showed significant reduction in leach ability of heavy metals compared to raw EMR.
Selection of Surfactants for Hydrogen peroxide-oxalic acid Polishing Slurry in Chemical Mechanical Polishing of 304 Stainless Steel
Authors: Yongsheng Wang , Haixu Liu , Xiaojun Cao , Zhankui Wang , Jianxiu Su 
Published: November 2020

Abstract
Stainless steel material will become one of the main materials for flexible large-size display substrates. Chemical mechanical polishing (CMP) will be one of the most practical processing technologies to achieve super smooth, non-damaged stainless steel surface. In this paper, the effects of different surfactants on material removal rate and surface roughness were studied. The results show that when adding the surfactant of the sodium hexadecyl sulfate in CMP slurry, the MRR was significantly higher than the other two kinds of surfactants. When the content of the sodium hexadecyl sulfate was 0.04wt%, the MRR reached the Maximum. When the content of the sodium hexadecyl sulfate was 0.2 wt%, the surface roughness reached the Minimum. So, the sodium hexadecyl sulfate is selected as the surfactant of the hydrogen peroxide-oxalic acid type CMP slurry.