bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis of mesoporous MnO2 nanosheets and its application in toluene purification reaction
Authors: Chen Jiawei , Liu Guangyou , Feng Ying , Guan Jiankang , Dou Yongshen , Liu Sanmao , Li Yongfeng 
Published: December 2019

Abstract
Mesoporous manganese dioxide (m-MnO2) nanosheets were synthesized using octadecylamine (OTA) as template. The obtained m-MnO2 has rich mesoporous structures, high pore volume of 0.323 cm3/g and high surface area of 125.7 m2/g. While using the as-synthesized m-MnO2 as a carrier to support the noble metal active component of platinum, the obtained Pt-based supported catalyst exhibited excellent toluene purification activity: toluene conversion can be over 90% at low reaction temperature of 160°C.
Study on Direct Quenching and Tempering Process of 1000MPa Grade Low Alloy High Strength Steel
Authors: Gao Peng , Gao Ye , Chen Jun , Liu Zhenyu , Zhuo Yue , Sun Guodong 
Published: December 2019

Abstract
The direct quenching and tempering process of 1000MPa low alloy high strength steel had been studied in this paper. When the tempering temperatures were between 550°C and 610°C after direct quenching, carbides began to precipitate in the test steel, and the main microstructure were tempered martensite. When tempering temperatures were between 640°C and 670°C, the recovery stage of martensite lath basically ended and recrystallization began. The precipitated carbides grew up and the microstructure were mainly tempered sorbite. The results showed that the optimum tempering temperature range of the test steel was 610°C∼640 °C. The yield strength and tensile strength of the test steel were greater than 1000MPa, and the comprehensive properties of the test steel were better. It provided guidance for the production of 1000MPa high strength steel by direct quenching and tempering process in industry.
Evaluation and analysis of bearing capacity of bridges based on structure checking
Authors: Zhang Chunxia , Peng Lu , Lin Zhidan 
Published: December 2019

Abstract
To assess the bearing capacity of a bridge, this paper modified the structural resistance and load effect in the limit state equation by using the checking coefficient of bearing capacity, deterioration coefficient of bearing capacity and section reduction coefficient. Additionally, the paper compared the bearing capacity of the decision structure or the element and provided reference for evaluation and analysis of similar beam bridges.
Mechanical Analysis and Simulation of Intelligent Nursing Bed
Authors: Lang Jianzhi , Zhang Ziheng , Zhao Jintao 
Published: December 2019

Abstract
How to take better care of the elderly and disabled people has become an urgent problem. This paper focuses on the development of a set of intelligent toilet collection system for the sanitary problem of excreting on the bed, which can help patients automatically excrete. First of all, we designed the overall structure of the nursing bed, its frame and planar linkages. Then, we used the Adams software to make kinematics and dynamics analysis of the nursing bed’s mechanism. According to the data of the dynamic analysis, we conducted a finite element analysis of the frame of the nursing bed, and tested the strength of its parts. The results showed that the motion of each mechanism was stable, the experimental value was much less than the yield strength of the material. Consequently, it could meet the design requirements.
The Influence of Temperature on the Bonding Strength of the Interface
Authors: Liu Lei , Li Jinfei 
Published: December 2019

Abstract
In order to study the effect of temperature on the bond strength between the propellant and the lining interface, this paper designed a temperature test for the bonded test piece, and conducted a uniaxial tensile test and a stress relaxation test on the test piece. At the same temperature level, the maximum load on the specimen increases with the increase of strain. Under constant strain conditions, the stress on the bonding interface of the test piece gradually decreases with increasing temperature.
Aging Properties of Nitrile Rubber in Medium under High-Low Cyclic Temperature Environment
Authors: Kong Lingze , Dong Kehai , Chen Sitong , Xia Cheng , Pei Liguan 
Published: December 2019

Abstract
To obtain the aging mechanism of a certain kind of missile sealing nitrile rubber material under high and low-temperature cycle conditions, the nitrile rubber sealing ring was subjected to the accelerated aging test of high and low temperature circulating oil medium. The changes of compression set, mechanical properties, microstructure, molecular structure and dynamic mechanical properties under the condition of temperature-changing oil medium were studied. The dissociation energy of several important chemical bonds of nitrile rubber molecules was calculated. The test results show that the maximum tensile strength and elongation at break of special nitrile rubbers decrease with the increase of the number of cycles, and the compression set rate of nitrile rubber samples stored in oil medium increases gradually in the early stage of aging. Large, slightly restored in the late stage of aging, as the aging time increases, the side groups of the nitrile rubber molecules decompose and the main chain flexibility increases.
Synthesis of Pyridinium Pyrimidines C-Met Small Molecule Inhibitors
Authors: Xiong Hehua , Peng Fu , Tian Fajuan , Tang Qidong , Zheng Pengwu 
Published: December 2019

Abstract
Cancer has gradually become a serious threat to human health, and molecular targeted therapy has largely broken through the shortcomings of traditional treatment methods. C-met has been found to be overexpressed in a variety of cancer cells, and inhibition of its signaling pathway can effectively inhibit the occurrence of cancer. To explore the structure-activity relationship of the pyridinium pyrimidine cmet small molecule inhibitors, we synthesized the final compound A.
Research on Hub Lightweight Based on Lightweight Materials
Authors: Zhao Hongwang , Chen Yuanhua , Liu Xiaogang 
Published: December 2019

Abstract
Taking the hub of a certain vehicle as the research object, according to the actual operation conditions of the hub, the stress analysis of the hub is carried out to obtain the stress of the hub, which provides a reference for the lightweight design of the hub. The wheel hubs of structural steel, magnesium alloy and aluminium alloy are loaded and restrained respectively, and the displacement nephogram, stress nephogram and modal analysis diagram of the three materials are obtained. The results show that the three materials meet the requirements of stiffness and strength. Aluminum alloy is the best choice in terms of weight reduction effect and price.
Research on Risk Management Strategy of Direct Supply Support for Maintenance Material Manufacturers
Authors: Cheng Zhonghua , Zhang Yangyang , Ma Quanyue , Yin Xuyang 
Published: December 2019

Abstract
Direct supply support for maintenance material manufacturers is a new mode of support, which also faces many risks and problems. Aiming at the problem of how to effectively manage and control risks, considering the main risk factors in the support process comprehensively, on the basis of getting the weight of risk factors by using the analytic hierarchy process, the ABC classification method is used to classify and grade the risk factors, and then effective risk countermeasures and reasonable management and control suggestions are put forward respectively to ensure that the direct supply of maintenance material manufacturers can achieve the desired effect.
Induction Hardening Process of G18NiMoCr3-6 Steel
Authors: Tang Cai , Chen Bo , Fan Huiji 
Published: December 2019

Abstract
The microstructure and properties of G18NiMoCr3-6 steel after medium frequency. Quenching hardening with different process parameters and its heat treatment process optimizing were studied. The results show that the best combination is voltage 420V, cooling water flow 300L/h, moving speed 200mm/min. After medium frequency induction hardening process, the surface of G18NiMoCr3-6 steel generates uniform and small martensite, the strength and wear resistance significantly increases.
Low temperature synthesis and performance investigation of co-doped (Cr, Co)–ZrSiO4 ceramic pigments
Authors: Li Peng , Yang Qiuhong , Zhang Shaobo 
Published: December 2019

Abstract
In this paper, a green (Cr, Co)-codoped ZrSiO4 pigment was successfully prepared with Li2CO3 as mineralizer via solid-state reaction method at low temperature. The samples were characterized by X-ray diffraction, thermogravimetry and differential scanning calorimeter analysis, respectively. The XRD results reveal that the Li2CO3 as mineralizer can promote the formation of ZrSiO4 and decrease the synthesis temperature to 1000 °C that is 400–500 °C lower than the without mineralizer. The TG-DSC curve doped with Li2CO3 shows that zirconia and silica react to form zircon at 1000 °C. It is indicated that the Li2CO3 can reduce reaction activation energy and Si-O bond degree to promote zircon formation. After calcining at 1000 °C for 2h, the intensity of the colour in the samples varies from light green to dark green, depending on the co-doping content. The sample with 8mol% (Co, Cr) particles exhibit brilliant green (a*=-19.33), the value of a* is almost as good as commercial pigments, which indicates it is a potential candidate for ceramic pigments application. More importantly, the preparation method has the advantages such as reduce color ion doping, simplicity of process, and can also be used for preparing other zircon-based high-temperature colorants.
Pollution and Cooperative Treatment of Livestock and Poultry Waste: A Review of the Literature
Authors: Chen Yu , Wang Fang 
Published: December 2019

Abstract
By reviewing the current situation of livestock and poultry wastes pollution, the disposal methods, influencing factors and the related theories of cooperative treatment and literature on livestock and poultry farming pollution, it was found that most of the research on Cooperative treatment of livestock and poultry farming wastes in rural areas remained at the theoretical level, but less in practice. There are few studies on the development of a cooperative system and aquaculture subjects. The future research directions can be focused on the benefit evaluation of pollution control mechanism of livestock and poultry farming and the practical mode of cooperative pollution control of livestock and poultry farming.
RTU Hardware and Software Design in the Process of Nano Material Production Control
Authors: Zhang Li , Liu Menglin 
Published: December 2019

Abstract
“Nano-storage” based on organic molecules is a new type of data storage system with a trend to replace the currently widely used semiconductor memory devices. At present, there are two kinds of “molecules” that are potentially applied to “nano-storage”, one is molecular electronic devices, including molecular wires, molecular rectifiers, molecular switches, and molecular transistors; and another material that uses nanostructures, such as nanometers. Tubes, nanowires, and nanoparticles. In this paper, nanomaterials are used as raw materials to invest in R&D and hardware design of remote data terminal control software (RTU) of electrical engineering. The development of nano-charge storage such as characteristics of remote terminal controls and charge transfer is discussed. Embedded design method. The design steps of the embedded method and the overall structure of the control software are introduced. Finally, the characteristics and practical applications of the method are discussed.
Study on Abnormal Heating Mechanism of FRP Rod of Composite Insulator
Authors: Zeng Leilei , Zhang Yu , Yan Nianping , Miao Xuemei , Tong Chao , Zeng Xin , Zhou Longwu , Zou Yang , Liu Yan , Deng Zhibin 
Published: December 2019

Abstract
In recent years, abnormal heating phenomenon has occurred in composite insulators in China, which have brought potential trouble to the safe operation of power grid. The abnormal heating of fiber reinforced plastic (FRP) rod is an important reason for the temperature rise of composite insulators. In order to study the mechanism of abnormal heating of the FRP rod of composite insulator, three analysis methods of material including scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) are combined to make a microscopic analysis of abnormal heating phenomenon and sample of mandrel, which find that the abnormal heating mandrel of epoxy resin matrix and glass fiber were all deteriorated and accompanied by the invasion of moisture and the produce of HNO3. The experimental results show that polarization loss, partial discharge and resistance loss caused by deterioration of mandrel are the main reasons for abnormal heating of FRP core of composite insulator.
Novel Spray Cooling Plate for Thermal Control of Active Phased Array Radar
Authors: Jiang Shouli , Li Jia , Xiao Rui , Leng Tongtong , Zhong Jianfeng , Cheng Wenlong 
Published: December 2019

Abstract
Based on spray cooling technology, a new high-integrated subarray cooling plate with multi-nozzles is presented for thermal control of active phased array radar (APAR) with high heat flux density. Firstly, by building a three-dimensional heat transfer and flow model, the simulation work was performed to evaluate both thermal control performance of presented cooling plate for APAR. Then, a special experimental thermal control system for the new cooling plate was established to investigate the thermal performance of presented cooling plate under both static state and vibrative state are investigated. The results showed that the nozzles in the cooling plate got high uniformity in pray characteristics. And by using the new cooling plate, the temperature rise of heat source could be controlled below 43°C with heat flux density of 323.3 W/cm2. Also, the temperature rise of heat source under vibrant state was lower than the static state.
Structure Design and Finite Element Analysis of the 24m Array Truss
Authors: Yang Chong , Zhou Sibin , zhang Guoguang 
Published: December 2019

Abstract
In this paper, one type of 24m underwater array truss structure have been designed.Based on the array structure, analysis the force condition, the structure strength and stiffness were calculated, and the establishment of the array structure finite element model, combined with ANSYS analysis, truss strength and stiffness meet the specification requirements, the structure safe and reliable.
Study on External Limit Load and Instability Characteristics of C-shaped Bellows
Authors: Gao Qingdong , Duan Chenghong , Luo Xiangpeng 
Published: December 2019

Abstract
The metal bellow is the main flexible component in the pipeline compensator, which is used to compensate for the change of pipeline or structural displacement caused by thermal expansion and contraction, mechanical displacement or vibration, and is widely used in various fields of industrial production. In this paper, the critical load of the external pressure instability of the C-shaped bellow is theoretically deduced, and the corresponding finite element method is verified by this theory. On this basis, the finite element analysis is carried out for C-shaped bellows of different sizes. The influences of parameters such as diameter, wall thickness, wave radius, wave pitch and wave height on the limit load and critical instability load are clarified. The present study could provide an effective basis for the mechanical analysis and design of bellows, and also could provide a reference for the installation and use of bellows.
Application of Ergonomics in the Installation of Silage Mechanical Coating Module
Authors: Chen Mengjia , Lv Bing , Li Zequn , Wei Hao , Xue Zhenpeng , Li Yantao 
Published: December 2019

Abstract
In the high-speed innovation of agricultural machinery, the main means of competition among different brands has shifted from product function to good user experience. Modular silage machinery has gradually become the development trend of agricultural machinery industry. In order to reduce the purchase cost of large silage machinery, improve installation efficiency and operational comfort, the silage machinery is divided into modules based on the functional flow model. Taking silage mechanical coating module installation as an example, analyzing the installation difficulties from the perspective of ergonomics, the module division and installation process design of the lifting device, the design of the coating module armrest and the connection mode between the lifting device and the coating module are obtained. The installation plan of the silage mechanical coating module. It relieves the pressure on the lumbar spine of the operator during the installation process and provides a design basis for the installation of other modules.
Vibration Analysis of Corn Header Silage Module Rack Based on Technological System Evolution
Authors: Li Zequn , Lv Bing , Chen Mengjia , Xue Zhenpeng , Li Yantao , Wei Hao 
Published: December 2019

Abstract
The silage module of the corn header is transformed from the existing silage corn header. The tractor drives the silage module to harvest silage corn, and the performance of the silage module directly affects the quality of the harvest. In view of the strong vibration and unstable performance of the silage module during operation, it is necessary to perform vibration analysis on the frame of the silage module. The 3D model of the silage module was established by Solidworks. The modal analysis of the frame structure of the silage module was carried out by ANSYS. The first 6 modes of the frame and its natural frequency are obtained. By analyzing the intrinsic relationship between the mode and vibration of the silage module frame, the first-order mode of the silage module frame is obtained to resonate with the road surface excitation frequency. Using the technical system evolution rule to analyze the patents related to avoiding resonance methods, it is concluded that the current patent evolution is at a mature stage. It shows that there are enough ways to avoid resonance. Combined with the scientific effects of the How-to model and related patent cases, resonance is avoided by changing the structure of the frame to avoid the excitation frequency of the road surface.
Application of Computer-Aided Diagnosis Algorithm in CT Images of Urinary Calculi
Authors: Gao Yaming , Huang Laijian , Chen Bin , Liu Zhaobang 
Published: December 2019

Abstract
In recent years, computer-aided diagnosis has developed from pure theory to clinical trials, which has proved its feasibility and applicability in the diagnosis of breast cancer and pulmonary nodules. Therefore, combined with the actual medical background, computer-aided diagnosis is used in the analysis of urinary calculi components in patients, and the composition and structure of calcium oxalate calculi and anhydrous uric acid calculi are accurately analyzed, which has important guiding significance for the clinical treatment and prevention of urinary calculi.
The Design of Small-Metals Collector in Workshop
Authors: Zhao Yaping , Chen Zailiang , Weng Yunxian 
Published: December 2019

Abstract
A small appliance for collecting the small metals scattered in factories and workshops. This collector has rotary drum structure and uses the permanent magnet to absorb small metals. The design of the one action removal system helps collected metal parts is removed automatically instead of desquamated by hand. Part structure of this appliance can be combined by increasing the working width to satisfy different market demands in various conditions. The tests indicate that this appliance with simple structure, convenient operation and low cost has great market demand and application value.
Raw Materials Purchasing Strategy Model for Complex Products Based on Time Series
Authors: Peng Zhao , Guo Shunsheng , Wang Lei , Guo Jun , Du Baigang 
Published: December 2019

Abstract
A rolling purchasing strategy based on time series is proposed for the purchase of raw materials in the manufacturing process of complex products. The core idea of this strategy is to implement rolling procurement under the conditions of normal processing. According to the future price fluctuation of raw materials, a multi-stage purchasing model is established to minimize the total cost, solve the optimal purchasing quantity in each stage and implement the optimal purchasing quantity in the current period; when the next raw material procurement sequence is reached, according to the new order demand of the enterprise, update the information of time series, raw material demand, future price and other aspects of the model to obtain a new multi-stage procurement model, and then solve the optimal procurement volume in the current period, and so on.
Research on Optimizing Model of Product Availability in Warranty Period
Authors: Cheng Zhonghua , Wang Qian , Bai Yongsheng , Wang Qiang , Zhao Rudong , Chen Yong 
Published: December 2019

Abstract
In order to improve the availability of products during the warranty period, a maintenance strategy combining incomplete preventive maintenance with two different degrees of maintenance is adopted to solve the problem of long downtime which is caused by failure of products during the warranty period. Based on the theory of incomplete maintenance, the availability model is established. Through an example, it is proved that the model can improve the availability of warranty products, and the scope of application is given. Sensitivity analysis is conducted for some factors affecting availability.
A review of polyaniline based materials as anodes for lithiumion batteries
Authors: Chen Yifan 
Published: December 2019

Abstract
Conducting polyaniline is of great research interest to use as anode material for lithium-ion batteries. However, the development of polyaniline still remains significant challenges. For example, nowadays, it is not easy to effectively improve the electrochemical performance of ions batteries and promote its application. Herein, we introduce the structure, synthesis and properties of polyaniline firstly, then we summarize the recent advances and applications of PANI based hybrid materials in anodes for lithium-ion batteries. Special attentions were given on the following items: carbon-polyaniline composite, silicon-polyaniline composite, and metal oxides-polyaniline composite. The superior chemical nature of polyaniline enables it is promising to use as advanced anode material for Lithium-ion batteries.
Preparation and optical properties of boron-doped Si-Na-Al-Zn photo-thermal-refractive glass
Authors: Li Peng , Zheng Ruilin , Yao Xiang , Wei Wei 
Published: December 2019

Abstract
Photo-thermo-refractive (PTR) glass, which has the advantages of high refractive index modulation value, large working bandwidth and wide environmental adaptability, is an excellent material for preparing volume Bragg grating (VBG). However, the application of PTR glass is limited because of its high melt processing temperature and high optical loss. The introduction of boron into PTR glass can significantly reduce the melting temperature. In this study, boron-doped Si-Al-Na-Zn PTR glass was prepared at a low temperature by the high-temperature melting method, and its temperature–viscosity relationship, heat treatment procedure and optical properties were investigated. The results show that the introduction of boron into PTR glass can significantly reduce the high-temperature viscosity of PTR glass. The melting temperature is lower than 1,400 °C, and the optimum nucleation and crystallisation temperatures are 490 °C and 590 °C, respectively. The optical transmittance of UV-exposed and heat-treated glass is more than 90%, which indicates its excellent optical properties and its applicability for use in preparing VBG with high diffraction efficiency and low optical loss.