bluuebunny/crossref_metadata_2025_split huggingface dataset:
Flame Retardancy of Thermoplastic Polyurethane Using Phosphorus-containing Flame Retardants
Authors: Yu Guomin , Song Meng , Jiao Shuyan , Jia Xu , Li Yinghua 
Published: August 2019

Abstract
A new phosphorus-containing polymer was synthesized and applied as a flame retardant in the polyether thermoplastic polyurethane (TPU). This flame retardant combined with two commercial flame retardants of melamine pyrophosphate (MPP) and melamine cyanurate (MCA) were also used in TPU. Their flame retardancy, thermal degradation and structural feature were investigated by limiting oxygen index (LOI), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) and scanning electron microscopy (SEM). The experimental data showed that the presence of phosphorus-containing flame retardant improve the limiting oxygen index, thermal stability and fire behavior. The LOI value of TPU including 20 wt% synthesized phosphorus-containing flame retardant and 20 wt% MCA was increased to 25.8. The thermal stability of TPU was also excellently improved comparing with the neat TPU. A maximum char residue was obtained when 20 wt% synthetic flame retardant and 20 wt% MPP were added into the TPU which the char yields were 18.7%. The combustion heat results showed that the value of neat TPU is highest than other TPUs by adding the different flame retardants. The SEM results showed that a dense char layer was obtained by adding the synthetic phosphorus-containing flame retardant and MCA with 20 wt % respectively into the TPU system.
Preparation and Photocatalytic Activity of BiOBr with High Exposure {102} Crystalline Surface
Authors: Yuan Chunhua , Bao Hongling , Ren Yongqing 
Published: August 2019

Abstract
Flake BiOBr was prepared by one-step hydrothermal method using NaBr and Bi(NO3)3•5H2O as raw materials. The structure of the samples was characterized by means of XRD, SEM, UV-VIS. The photocatalytic activity of BiOBr was studied with methylene blue as probe. The results show that BiOBr with high exposure {102} can be obtained when the hydrothermal temperature of the product is 160°C and the hydrothermal time is 24 h. Under visible light, the degradation rate of methylene blue was over 98%. When the catalyst was reused three times, the degradation rate could still reach 80%.
Study on Increasing Vulcanization Rate of Ethylene-propylene Rubber
Authors: Zhou Kun 
Published: August 2019

Abstract
The effects of several commonly used an ultra on the vulcanization properties of EPDM vulcanized with sulfur and the vulcanization properties and physical properties of EPDM vulcanized with peroxide were studied. The results showed that BZ and lseg-4 vulcanization rate was fast and frost spraying was not easy. Peroxide tx29-40 can be used to vulcanize EPDM. The activation energy and vulcanization speed of tx29-40 are higher than DCP/TAIC and double 2,5 which can be used for high temperature and rapid vulcanization of peroxide in EPDM.
Construction of the Photonic Crystal Structural Colors with High Colorfastness Using the Novel Synthesis Adhesive
Authors: Zheng Hongliang , Liu Xinhua , Fang Yinchun , Ding Jiang 
Published: August 2019

Abstract
Phtoonic crystal Structural color has received more and more attentions in recent years. However, there are also some drawbacks of these structural colors, such as the cracking and low colorfastness. In this research, the novel adhesive of P(GMA-co-HFBMA)-g-PEGMA which contians the epoxy group and the hydrophobic fluorocarbon chain was synthesized. The chemical sturcture of the P(GMA-co-HFBMA)-g-PEGMA was charactrized by FTIR and EDS spectra. The results of FTIR and EDS spectra revealed that P(GMA-co-HFBMA)-g-PEGMA was successfully synthesized and used as the adhesive for the improvment of the colorfastness. The results revealed that the novel adhesive will be beneficial for the improvement of the rubbing and washing colorfastness of the photonic crystal structural colors. When the usage of 1% P(GMA-co-HFBMA)-g-PEGMA was 0.5 mL, the brightness of the structrual color will incease. While the usage was higher than the 1 mL, the brightness of the structural colors will decrease with the increasing of the usage. Therefore, the the suitable usage of the 1% P(GMA-co-HFBMA)-g-PEGMA was less than 1 mL. This research will provide the novel method for the development of the photonic crystal structural color with high colorfastness.
Analysis on Emergency Management of Coal Mine Safety Production in China
Authors: Cheng Genyin , Zhang Changchang 
Published: August 2019

Abstract
The working environment of coal mines is special and there are many dangerous sources, resulting in frequent accidents. As the demand for coal in the society increases, the depth of coal mining continues to deepen, and deep mining faces more security problems. This paper analyzes the relevant literatures of coal mine emergency management in recent years, clarifies the current situation of emergency management in China’s coal mines, points out the problems existing in China’s coal mine emergency management and suggestions for improving the overall level of coal mine emergency management, and provides reference for promoting the better development of coal mine safety production in China. Prevent more emergencies, reduce casualties and financial losses, and realize the transition from high-risk industries to the security industry at an early date.
Improvement of Mechanical Strength, Thermal Stability, Swelling, Moisture Content of Triple Network Hydrogels by Carbon Nanotubes
Authors: Jiang Bing , Li Qingshan , Hong Wei , Wu Shu , Yan Dawei , Gao Le 
Published: August 2019

Abstract
In this study, we prepared a novel carbon nanotubes reinforced three network hydrogels composed of carbon nanotubes, polyacrylic acid(PAA), agar and polyvinyl alcohol(PVA), consisting of an agar gel as the first physical network, a PAA-Fe3+ gel as the second physical network and a polyvinyl alcohol as the third physical network. The surface modification of MWCNTs was carried out by oxyfluorination to introduce the functional groups on the hydrophobic MWCNTs. Agar/PAA-Fe3+/PVA/MWCNTs hydrogels with high tensile and compression strength(σf of 1.5 Mpa, Ɛf of 14.24 mm/mm) and (σf of 1.69 Mpa, the deformation of 80%), thermal stability, low-swelling, high moisture content properties were successfully prepared by a simple three-step method. The addition of carbon nanotubes has significantly improved the thermal stability of the gels, its thermogravimetric curve drops obviously until 387°C. Under the joint action of hydrogen bonding and ion coordination interaction, the gel achieves a perfect balance of swelling and moisture content. The research provide a new method to improve mechanical, swelling, thermal stability, moisture content ability by adjusting the compositions and interactions in the gels.
Study on the Biocompatibility of Mg-4.0Zn-1.0Sr-0.4Ca Alloy with Phosphating Treatment after Implantation in Rats
Authors: Cui Tong , Liu Yan , Chen Suiyuan , Qin Haiming , Song Fulin 
Published: August 2019

Abstract
The phosphating treatment coating is prepared on Mg-4.0Zn-1.0Sr-0.4Ca alloy surface, and the phosphating coating is consisted with HA and a small amount of calcium hydrogen phosphate hydrate. The hemolysis rate of both phosphated coating and uncoated samples is less than 5 %, showing that both have good hemolytic resistance which meet the requirements of use. It is found through the pathological studies that after implantation Mg-4.0Zn-1.0Sr-0.4Ca alloy for 30 days, for the leg muscle tissue, kidney tissue, liver tissue and bone tissues of rat the inflammation phenomenon is gradually recovered or completely recovered being passed the corrosion peak, while for the rat implanted the phosphating treatment alloy was in the acute stage of inflammation. After implantation Mg-4.0Zn-1.0Sr-0.4Ca alloy and the phosphating treatment alloy for 30 days, all of the brain tissue, myocardial tissue, lung tissue, intestinal tissue are unaffected.
Empirical Econometric Research on the Influencing Factors of Maoming Agricultural Development
Authors: Xu Yanli , Lin Yuhua , Eugene Stanley H. 
Published: August 2019

Abstract
Agriculture is a very important industry in a country or region. In order to promote the development of agricultural production in Maoming City, this paper uses the econometric method to conduct quantitative empirical analysis of Maoming City’s agricultural development. The results show that Maoming City’s planting, forestry, animal husbandry and fishery have promoted the agricultural development of Maoming City. Therefore, it can be concluded that in order to accelerate the development of agriculture in Maoming City, investment in planting, forestry, animal husbandry and fishery should be increased.
Analysis of Military-Civil Interaction in Emergency Management based on C2 Model
Authors: Cheng Genyin , Liu Hongwei 
Published: August 2019

Abstract
In recent years, with the frequent occurrence of emergencies in China, more urgent requirements have been put forward for the improvement of emergency management system. As one of the important forms of emergency management, military-civilian joint action plays an important role in emergency rescue. However, in the past cases, there are still many problems in the process of local and military participation in emergency rescue, resulting in poor rescue effect. Command and Control (C2) model is a classical model in military command and control. It can analyze the military-civilian linkage system intuitively and systematically, and summarize the characteristics of each maturity level of C2 model to form a table. Based on this, the maturity of the military-civilian linkage accident rescue process is evaluated and the existing problems are analyzed, and the needle is put forward. The measures for sexual improvement and further optimization of the military-civilian linkage system provide experience support for the improvement of emergency management system in China.
Numerical Simulation on Dynamic Behavior of High-speed Railway Cutting Bedding in Expansive Soil Area
Authors: Hu Min , Yang Guolin 
Published: August 2019

Abstract
The cutting bedding defect of expansive soli is one of the most difficult problems in railway constructions. Based on analysis results of the character and mechanism of subgrade disease, semi-rigid waterproof and drainage structure layer is researched, fully-enclosed subgrade is designed. Based on work of predecessors, the article simplify the train load equation and study the dynamic characters of new cutting and bedding. The results show that laying waterproof and drainage structure can increase the speed of decay of dynamic stress in the bedding, decrease the dynamic displacement of bedding surface substantially, and make the standard of high speed railway.
Lower Explosion Limits Measurements and Prediction for Binary Liquid Mixtures
Authors: Cao Jiakai , Ding Li , Pan Yong , Zhao Jianping 
Published: August 2019

Abstract
The lower explosion limit (LEL) is an important physicochemical parameter for characterizing the flammable and explosive hazard potential of chemicals. In this study, the LEL values of 21 groups of binary liquid mixtures with different compositions and ratios were tested, and the change law of LEL with compositions and ratios were revealed. Then four different physicochemical parameters were employed as the input parameters for the LEL prediction of mixtures. Both the multiple linear regression (MLR) and multiple nonlinear regression (MNR) methods were employed to model the possible quantitative relationships between these parameters and the LEL of binary mixtures. The resulted models showed satisfactory prediction ability, with the average absolute error being 0.188% for the MLR model and 0.196% for the MNR model, respectively. Model validations were also performed to check the stability and predictivity of the presented models, and the results showed that both models were valid and predictive requiring only some common physicochemical parameters of the pure components. This study can provide a simple, yet accurate way for engineering to predict the LELs of binary liquid mixtures as applied in the assessment of fire and explosion hazards and the development of inherently safer designs for chemical processes.
Soil Moisture Inversion with Sparse Vegetation Coverage Areas and Analysis of Spatial Characteristics Based on RADARSAT-2
Authors: Kong Hui 
Published: August 2019

Abstract
Backscatter coefficient of radar imagery is mainly affected by the surface soil moisture and roughness. This paper was based on the RADARSAT-2 polarimetric SAR image data, field measured soil moisture data, surface roughness, soil particle composition and soil bulk density data. The soil moisture from SAR was retrieved by using Oh2004 semi empirical model inversion method, Oh2004 semi empirical model LUT method, AIEM theory model which is based on the effective correlation length and AIEM theory model on account of the effective RMS height. After soil moisture retrieval of the study area sampling points at 0-6cm depth, this study analyzed the corresponding to the four kinds of methods of the optimal filtering window size, made a comparative analysis of the four methods and determined the optimum inversion model of the study area soil moisture microwave remote sensing at 0-6cm depth. This article used the best model for retrieving soil moisture in depth of 0-6cm, made the distribution map of soil moisture at 0-6cm depth, and analyzed spatial distribution characteristics.
Study on the Distribution of Heavy Metals in Atmospheric Dustfall in the Area around Linyi University
Authors: Qiu Jicai , Liang Renjun , Ren Liying , Qin Pengfei , Ma Hongqing 
Published: August 2019

Abstract
This paper analyses the atmospheric dust in Linyi City about the content and the form distribution of heavy metals. The main research focuses on the eight kinds of heavy metal elements, including As, Cd, Cr, Cu, Hg, Mn, Pb, Zn. The research results show that the formation distribution of heavy metal element is differ, the morphology of Mn and Cu detection rate of 100%, with five kinds of form exist; Cu, Zn, Mn, Pb, Cd in the exchangeable ions and carbonate combined states accounted for 20% of the proportion of high proportion. Cr, Cd, heavy metal forms with exchangeable ions state, carbonate state, iron, manganese oxide combination state, which accounts for 80% to 95% of the total, unstable state 20% has some impact on the environment and the human body.
Research on Sequence Stratigraphy of Nantun Formation in Bayanhushu Depression of Hailar Basin and Favorable Target Prediction
Authors: Zou Yue 
Published: August 2019

Abstract
Exploration in Bayanhushu depression has been published from time to time, showing great exploration potential, but the degree is low at present. We devided Nantun formation into two third sequences through comprehensive analysis and studied on the types and distribution of sedimentary facies. The conclusion shows that Nantun formation is mainly comprised of fan delta, braid delta and lacustrine facies. The fan delta sedimentary facies mainly distribute in the western steep slope zone, while the braided river delta develops in the eastern gentle slope zone, and the lacustrine facies mainly develops in the middle trough zone and the edge of the fan delta. The sedimentary pattern has the characteristics of “east-west zoning”. From the steep slope to the gentle slope, the types of sedimentary facies gradually change from fan delta to shore-shallow lake, semi-deep lake to deep lake and then to braided river delta. The study of source-reservoir-cap assemblages and accumulation conditions shows that fan delta front and braided delta front have good physical properties and are close to high grade source. So it is easy to form inversion structural reservoirs in the steep slope break zone, while fault-lithologic reservoirs in gentle slope zone, a lithologic reservoirs near trough areas.
Design of Microgrid Simulation System
Authors: Du Haohao , Li Yongjun , Li Tingting 
Published: August 2019

Abstract
For reasonable deal with the relationship between the public power grid and distributed generation, this design by micro grid simulation system as an object, mainly studies the design method of grid inverter, completed the grid inverter hardware system and control system design, and on the basis of the above work, the micro grid simulation system is designed by simulation analysis and experimental verification. Simulation and experimental results show that the designed system can simulate island operation and grid-connected operation, and has complete functional indexes and higher performance indexes, which verify the correctness and rationality of the designed system.
Material Analysis and Design of Air Purifier
Authors: Fang Jiani , Zhu Zhiwei 
Published: August 2019

Abstract
With the development of economy, the damage to the environment caused by industrial development is becoming more and more obvious. When people pursue material and spiritual matters, it is inevitable to consider the improvement of air quality that is closely related to our life. In order to improve the air, appeared on the market many air purifier, hoping to improve air quality in a certain space. Air purifiers have attracted people’s attention once they are on the market, and businesses are constantly improving air purifiers to meet people’s different needs and improve the competitiveness of products. With the aim to study the air purifier, the shape size, molding materials, processing technology and so on has carried on the thorough analysis, it is concluded that the link between design and material molding and processing technology.
Preliminary Study on the Characteristics of Laser Underwater Proximity Transmission
Authors: Shen Na , Yang Yuyue , Dai Wei , Hu Xin 
Published: August 2019

Abstract
Due to the special circumstances of underwater channel environment, laser underwater communication technology is facing challenges. The characteristics of underwater channel have been simulated and tested in this paper. Firstly, the scattering model and Monte-Carlo simulation method based on Mie scattering are established. Secondly, the simulation test on the influence of laser transmission under different parameter conditions is carried out. Finally, the design of the laser signal receiving system and the laser underwater transmission experiment are designed. The method of reducing the signal to noise ratio is analyzed and put forward. The experimental research is also carried out to verify the correctness of the simulation results. The experimental results show that with the increase of transmission distance, the diameter and density of scattering particles, the time domain broadening, space broadening and energy absorption of the laser will reduce the received light energy transfer signal, the sine wave will be distorted and the transmission will be affected effectiveness.
Design and Implementation of Flight Monitoring Simulation Training System
Authors: Pan Gaofeng , Su Yan , Liu Sifang , Li Pei 
Published: August 2019

Abstract
The calibration flight is an important technical means to verify the performance and accuracy of the TT&C equipment. In the flying, the equipment is power-on/power-off and the transponder mode is switched according to the needs. The transponder is a borrower. In the case of giving-back, it is especially important to recurring maintenance for the attachment. Through the system design, the original monitoring standby machine, the analog power supply chassis and the analogue controllers state of the transponder state, and three Bosch card and one serial server are used to fully simulate the on-board application environment. The industrial tablet application software adopts C# design to realize effective information interaction with the monitoring standby machine through serial port and network communication. The characteristics of the system are the continuous assessment of the power-on maintenance of spare parts, personnel training and actual system software, which is of great significance to the actual work.
Phased-array Surface Monitoring Method Based on Compensation Correction Technique
Authors: Xie Yong , Liu Sifang , Ding Ran , Li Pei 
Published: August 2019

Abstract
Phased-array radar has a huge array of microwave feeding network and antenna lobe performance depends on the array amplitude and phase errors. Therefore, it is necessary to monitor the array surface to ensure the performance of the array. In the traditional test method, there is a bad test precision and slow speed. In this paper, a monitoring method based on compensation correction technique is proposed. The inside and outside of the measurement method, two kinds of tests complement each other, can cover the unit level, ensure the favorable array amplitude and phase characteristics, to provide important support for high precision tracking.
Rotational Speed Analysis of Shipboard Turbo-generator Considering Efficiency Change after Sudden Load
Authors: Zhu Yongxin , Zhang Xiaofeng , Huang Jing 
Published: August 2019

Abstract
Based on classical analytical process of cylinder efficiency, the mechanism of efficiency change during turbo-generator power adjustment is revealed, and the influence of cylinder efficiency change on calculation of generator loading limit is studied and tested by using PSCAD software. The result indicates that, efficiency deviation caused by sudden load is helpful for the recovery of system power balance, and that the negligence of power deviation caused by efficiency decrease under overload circumstances may reverse the analytical result. Reliable control of power station is the key to stable operation of shipboard power grid. The research between cylinder efficiency and generator power adjustment can provide reference for further operation design and coordinated control.
Application of Center Approximation Ideal Point Method in Evaluation of Well Pattern Encryption Effect
Authors: Li Meifang , Jia Shihua 
Published: August 2019

Abstract
Since 1996 the research of well pattern infilling technology has been developed in seventy three blocks of Daqing peripheral oilfields. In order to evaluate the development effect of infilling blocks, this paper improved the normalized method and computational method of the distance between every filling plan and the positive ideal plan in the TOPSIS with interval-valued weight. The indexes which can evaluate development effect of infilling blocks were given in this paper, and part of the infilling blocks of Chaoyanggou oilfield were evaluated by the integrated approach of ideal point solution. The integrated approach of ideal point solution is not only a new quantitative method but also the theoretical foundation and technical support to evaluate the development effect of infilling blocks.
Study on Spontaneous Combustion Law of Goaf in 31301 Working Face of Chahasu Coal Mine
Authors: Cheng Genyin , Wang Yuhuai , Liu Jian 
Published: August 2019

Abstract
Aiming at the serious problem of spontaneous combustion of coal seam in 31301 working face of ChahaSu Mine. Firstly, the industrial analysis of coal samples in the working face shows that the coal quality of the working face belongs to non-caking coal, which has the characteristics of low ignition point, high moisture content and no caking. By testing the marked gases of spontaneous combustion of coal samples, it is concluded that CO and C2H4 can be used as the representative gas of spontaneous combustion of coal oxidation to judge the spontaneous combustion of coal seams. According to the field monitoring data, the three-zone distribution of spontaneous combustion is calculated, and compared with the three-zone distribution of spontaneous combustion under the condition of fully closed simulation, the factors affecting the three-zone distribution of spontaneous combustion are obtained. Combining with the results of experimental analysis, the law of spontaneous combustion is studied and the reasonable advancing speed of working face is determined, which provides theoretical support for the formulation of enterprise fire prevention and extinguishing measures.