bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of waste expanded polystyrene flexible coating material in concrete waterproofing
Authors: Hsu K -L 
Published: October 2019

Abstract
How to deal with the waste polystyrene and rubber has become a key research topic recently. This research attempted to process the waste rubber and waste polystyrene with chemical additives to produce the flexible coating material for concrete waterproofing. Based on the best guess on the configuration of the coating constituents by the grid-point method, the design experimental levels (3 levels) for different coating constituents could be decided by introducing the golden-section ratio. Then, the orthogonal experimental design method L27(313) was adopted by choosing surface-drying time, viscosity, water permeability, tensile strength, pull-elongation rate as orthogonal indicators. Through orthogonal experiment design method, the most influential coating constituents on different indicators were experimentally investigated. The results of the water permeability test showed that the water permeability of the coating was 0 mL and the water resistance was good. The analysis results of the orthogonal table showed that the material factors and levels affecting the tensile strength of the waste EPS flexible waterproof coating were: plasticizer (10.09%), polystyrene (17%), rubber powder (14%) and curing agent (5.1%), and the material factors and levels affecting the elongation of the waste EPS flexible waterproof coating are: plasticizer (2%), curing agent (5.1%), rubber powder (11.91%) and EPS (17%). This result can be used as a reference for adjusting the proportion of waste EPS flexible waterproof coating in the future.
Sub-urban land classification using GF-2 images and support vector machine method
Authors: Cui H S 
Published: October 2019

Abstract
Remote sensing classification is an important part in the process of extracting effective image information and research the foundation of land cover change. While traditional remote sensing image classification methods have some problems on low accuracy and uncertainty, machine learning algorithms are gradually applied to remote sensing classification. In this paper, support vector machines (SVM) method with high training speed and low computation burden is adopted to classify land cover based on GF-2 image, which is the domestic optical remote sensing satellite with high spatial resolution. The results show that: The overall classification accuracy by SVM is achieved 72.59% and the coefficient of Kappa is 0.65. The classification map is highly consistent with the original image, especially higher classification accuracy of cropland and tree. Partial regions were misclassified as shadow that didn’t reflect the real land objects. As a whole, there is favorable classification quality using SVM method and GF-2 multispectral bands.
Study of parametric pump performance curve based on surface fitting
Authors: Yuan Y , Xu X D , Li J D 
Published: October 2019

Abstract
By selecting the appropriate basis functions according to the variation of vane pump regulating performance curves, we analysed the relationship in blade angle, flow, and head (or shaft power) based on surface fitting, and we established a parametric model, proposed the solution of the problem. The calculation of the example shows that the model has a high correlation coefficient, and has a simple mathematical expression, which is helpful for further application and popularization.
Impact assessment of dredging on fish eggs and larvae: A case study in Caotan, South China
Authors: Yang Z F , Chen D , Xiao B P 
Published: October 2019

Abstract
Dredging can lead to an increase in suspended sediment concentration, which poses a threat to the survival of fish eggs and larvae.To assess the impact of dredging on fish eggs and larvae, Caotan Fishing Port in south China was chosen as a case in this paper. The threat to the survival of fish eggs and larvae, i.e. the increased suspended sediment concentrations, is identified through analyzing pollution sources in dredging operations; the number and species of fish eggs and larvae were obtained through on-site investigations; the concentration and influence range of suspended sediments are calculated by pollutant diffusion equations; the loss of fish eggs and larvae caused by suspended sediment during dredging is evaluated according to Technical Regulations for the Impact Assessment of Construction Projects on Marine Biological Resources (SC/T 9110-2007) in this paper. It can be preliminarily concluded that the suspended sediments produced during dredging and backfilling have an impact on the survival of fish eggs and larvae, and will reduce their quantity. Currently, loss analysis methods are based on empirical formulas, and more accurate quantitative analysis needs to be further studied.
Application of the internal substructure method for seismic wave input in structural dynamic analysis considering SSI effect
Authors: Bao X , Liu J B , Li S T , Wang D Y , Wang F 
Published: October 2019

Abstract
A new internal substructure method for seismic wave input in soil-structure systems was proposed very recently. This method simplifies the calculation of equivalent input seismic loads, and avoids the participation of artificial boundaries in the process of seismic wave input. In this study, we introduce the application of the internal substructure method in the structural seismic analysis considering soil-structure interaction (SSI). A typical frame structure is taken as the example, and the effect of SSI on the structural dynamic response is studied.
The influence of “night” factors on urban earthquake disaster prevention
Authors: Gu Y , Wu X Y , Lin J 
Published: October 2019

Abstract
Existing urban planning and urban disaster prevention measures are mostly based on urban space and crowd behaviour patterns during the day, ignoring the anti-disaster demand for urban space at night. Since people‘s perception of urban space is quite different by night and daytime, with behaviours patterns varying much accordingly, thus the consequences of urban disasters occurring at night are more serious than those occurring during the day, including the trigger of secondary disasters, which are more harmful. This paper collects and analyses the data collected from the target location, and finds that the night factor has a certain degree of impact and change on urban disasters. Through the construction and improvement of disaster prevention lighting facilities, it can guarantee the normal function of evacuation and avoidance paths and areas at night to a certain extent, and help the affected people to carry out effective self-rescue and mutual rescue at night, thereby reducing the impact of disasters and protecting the lives of personnel.
The Role of Muhammadiyah in Sustainable Development Through Community Empowerment Program
Authors: Ahmad M , Soemanto RB , Drajat TK , Edi W 
Published: October 2019

Abstract
Sustainable development is the development goal of every country, including Indonesia. The process of sustainable development has positioned the community as the subject with the main actor of the development is the community itself. Regarding this context, the process is performed through community empowerment approach. Muhammadiyah is the biggest non-governmental organization in Indonesia which engaged in religion, social community, economy, education, environment, and health sectors. This study aimed to discover the role of Muhammadiyah in the sustainable development of Indonesia. The method used in this study was mixed method as the combination of quantitative and qualitative approaches. The results of the research have concluded that Muhammadiyah has positive and significant roles in sustainable development of Indonesia, including from the evaluation results of the restoration program of tropical forest ecosystem in East Borneo Province and social-economic empowerment on vulnerable groups in Yogyakarta Province. The approach of Muhammadiyah through community empowerment program has been successful to improve the knowledge, change of attitude, and skills of the facilitated community. The community empowerment approach was implemented by Muhammadiyah to encourage public participation in sustainable development.
Simulation analysis of the influencing factors on the wind environment around the hilly terrain
Authors: Chen Q , Liu Y 
Published: October 2019

Abstract
The wind environment condition of hilly terrain is closely related to wind resources utilization. In this paper, based on Fluent numerical simulation method, the wind flow characteristics around the hill topography under the influence of varied slopes, incoming wind speeds, heights and roughness are analyzed and summarized. It can be drawn that for the range from the hillside to the top on the windward side, the slope has a significant effect on the wind speed. Within the 100m height above the ground, when the hill is steeper, the wind speed is significantly enhanced. At the top of the hill, the wind speed’s maximum increment is 1.5 times of the incoming value. When the wind goes across the hilltop, the factors including the slope, height and roughness, have great influence on the wind environment on the leeward side. When the slope is greater than or equal to 0.5, the phenomenon of eddies present and the range of influence extends downstream. The wind speed weakness trend can also be found when the height and roughness increase.
Experimental study on combination of microbial flocculants with PAC in in-situ remediation of black odorous water and sediment
Authors: Cheng H Y , Long J X , Liu Z , Yang A L 
Published: October 2019

Abstract
This study, the sediment of black and odorous water body in Xinyang main flood drainage channel of Xiamen City was taken as the research object, and the effect of in-situ remediation of black and odorous water body sediment by microbial flocculant (MBF) and polyaluminium chloride (PAC) in different proportions was studied through laboratory static simulation test. The experimental results show that: (a) The MBF dosage of 20 mg/L has a good effect on the remediation of the sediment in the black-odor river. The removal rates of TP and COD in the overlying water are 86.5% and 87.37% after 15 days of experiments, respectively. The removal efficiency of acid volatile sulfur in sediment (AVS) is not very good, the removal rate is only 27.1%. 100 mg/L PAC is added to remedy the black-odor river sediment, and the overlying water under the same experimental conditions. The removal rate of TP was 51%. (b) The combination of MBF and PAC has a good effect on the remediation of the sediment and overlying water of the black and odorous river in the city. The optimum dosage scheme is PAC with 20 mg/L and microbial flocculant with 10 mg/L. Under this scheme, the removal rates of NH4
+-N, TP and COD in overlying water were 92.37%, 70.82% and 64.52% respectively after 15 days of restoration experiment. AVS in sediment was reduced by 52.21%, which basically eliminated the black odor in overlying water.
Control and cleaning of membrane biofouling by biogenic silver nanoparticles
Authors: Zhang Manying , Cheng Cheng , Xie Rongrong 
Published: October 2019

Abstract
Membrane biofouling as the main obstacle strongly hinders the wider application of membrane technology. The control of biofouling development and the fouled membrane cleaning still are the big challenge in membrane industry. The present study investigated the control of initial bacterial attachment, biofilm development and finally the membrane cleaning by biogenic silver nanoparticles (Bio-Ag0-6) using commercial microfiltration membranes as the substrate. The results revealed that the Bio-Ag0-6 could inhibit the development of biofilm by decreasing the attachment of cells and the production of extracellular polymeric substances (EPS). Significant improvements of flux recovery ratio (FRR), the distribution of fouling resistances and the decrease of total fouling resistance ( Rf
) were achieved when introducing Bio-Ag0-6 to dead-end microfiltration systems. The membrane cleaning experiment verified the enhanced biofilm detachment from membrane surface by Bio-Ag0-6. It shows that Bio-Ag0-6 would be a good alternative to relieve membrane biofouling.
Preparation and characterization of silk fibroin from four different species of Thai-local silk cocoon for Bone implanted applications
Authors: Pitjamit S , Thunsiri K , Nakkiew W , Pothacharoen P 
Published: October 2019

Abstract
The metal interlocking nail is normally used in diaphyseal fractures. The bio-composite interlocking nail will be fabricated in the near future by using local silk fibroin reinforce Polylactic acid filament for 3D printing. Four species of local Thai Bombyx mori silk cocoons were selected to extract silk fibroin. The silk cocoon species consist of 1) Nangnoi Srisaket-I (NN), 2) Nanglai (NL), 3) Luang Saraburi (LS), and 4) J108. After the extraction, fibroins of each silk cocoon species were characterized and compared the physical property by using Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDS) and Fourier Transform Infrared Spectroscopy (FT-IR). Then, the biological test was performed on cell viability and cytotoxicity with human fetal osteoblast cell line. The result presents that all of local silk cocoons species presented non-cytotoxicity ability which can be used in human or animal body without endangerment.
Effect of silver nanoparticles with polyelectrolyte multilayer against Aggregatibacter actinomycetemcomitans
Authors: wacharanad S , ayudthaya Tkluaymaina 
Published: October 2019

Abstract
Silver nanoparticles capped with alginate (SNP-AL) were prepared by chemical reduction method. Three concentrations of SNP-AL were produced by varied alginate into 0.1, 1, and 5 mM. UV-Vis spectroscopy was used to characterize their specific wavelength at 400 nm. Subsequently, 10 bilayers thin film were established between PDADMAC and SNP-AL via polyelectrolyte multilayer technique. These were characterized by SEM and AFM. Their toxicity to anaerobe bacteria Aggregatibacter actinomycetemcomitans (Aa) a common cause of periodontal disease, was tested. Findings showed that these silver nano-chips could release SNP and reduce the Aa colony by 90%.
Effects of Si concentrations on microstructure and mechanical properties of as-cast Co–Cr–Mo alloys
Authors: Tunthawiroon P. , Chiba A. 
Published: October 2019

Abstract
This research investigates the effects of different Si concentrations on the microstructure and mechanical properties of Co–Cr–Mo–xSi alloys. The Si concentration (x) was 0.1, 0.5, 1.0, 3.0 and 5.0 wt%. The mechanical properties of the experimental heat-treated Co–Cr–Mo–xSi alloys was determined by hardness and tensile tests. The microstructure was analyzed using SEM. The microstructure analysis revealed that Si concentration played a role in the formation of the intermetallic phase of Co–Cr–Mo–xSi alloys. The presence of the intermetallic phase significantly decreased the ductility of the experimental alloys. However, the hardness was improved and was increased directly proportional to the fraction of the intermetallic phase precipitating in the Co–Cr–Mo–xSi alloys.
Wettability and printability of SAC305-xTiO2 Pb-free solder paste on Cu substrate
Authors: Sukpimai K. , Suwannakrue W. , Kanlayasiri K. 
Published: October 2019

Abstract
This paper was aimed to study on effects of TiO2 nanoparticles on wettability and printability of SAC305-xTiO2 Pb-free solder on Cu substrate. TiO2 nanoparticles at various concentrations (0.00, 0.05, 0.10, 0.50, and 1.00 wt%) were introduced to SAC305 solder paste by mechanical mixing. Wettability of the solder on Cu substrate was measured in terms of contact angle while printability was calculated from the ratio of printed volume on Cu substrate to ideal volume of solder on the substrate. Results showed that the introduction of TiO2 nanoparticles decreases the contact angle and 0.33 wt% TiO2 is the optimal concentration providing the lowest contact angle within the experimental range. Moreover, the addition of TiO2 nanoparticles reduced the printability of solder paste on Cu substrate. The higher amount of nanoparticles gave the lower printability. Simultaneous optimization on wettability and printability was also performed to find the optimal TiO2 concentration.
Dynamic analysis of a high speed motorized spindle for internal grinding of slender holes
Authors: Lin Shengye , Zhang Shaowen , Geng Keke 
Published: October 2019

Abstract
The purpose of this paper is to investigate the dynamic characteristics of a high speed motorized spindle for internal grinding of slender holes. The modified transfer matrix method is used to establish the dynamic model of the motorized spindle rotor system including the additional stiffness of the non-contact rotary union. The linear perturbation method is adopted to derive the perturbation equations for the flow passing through the gap in the non-contact rotary union. The finite difference method is used to solve the Reynolds equation and the perturbation equations to obtain the four dimensional stiffness matrix of the non-contact rotary union. Finally, the effect of the non-contact rotary union on the dynamic behaviours of the motorized spindle are studied.
Design optimization of worm gear drive with reduced power loss
Authors: Rai Paridhi , Gopal Barman Asim 
Published: October 2019

Abstract
In worm gear mechanism, power loss is one of the critical issues, which requires attention from gear designers and researchers. This is due to power loss; the overall efficiency of worm gear drive gets reduced. In this article, Simulated Annealing (SA) is used to minimize the power loss of worm gear drives within the prescribed set of design constraints. Various design constraints included in the design optimization problem are linear pressure, bending strength and deflection of worm. Gear tooth number, coefficient of friction and helix angle are the design variables considered. Results obtained are compared and validated with the results obtained in previous research work found in the literature. It shows that SA is more efficient in attaining optimal design values for worm gear drive for reducing power loss.
Research on computation and simulation technology of battlefield complex electromagnetic environment
Authors: Yang Fan , Dong Zhenghong , Duan Xiaobo 
Published: October 2019

Abstract
In view of the current fierce competition for electromagnetic power among countries, it is necessary to accelerate the simulation of frequency equipment in complex electromagnetic environments, and to construct complex electromagnetic environment simulation scenarios under joint combat conditions. How to construct the complex electromagnetic environment that meets up with the requirement of battlefields, and to improve combat command and training capabilities are the current research problems. Thus, this paper studies the simulation and calculation of the complex electromagnetic environment in the battlefield, and proposes and designs a system for the calculation and analysis of the complex electromagnetic environment of battlefield. The system can be used to estimate radio wave propagation of each frequency equipment, to analyse and compute complex electromagnetic situation of the battlefield, and visualize them. The above estimation, analysis, and computation are obtained according to the displacement of frequency equipment, and battlefield environment, such as geography information and meteorological information. The proposed system can obtain the impact of electromagnetic environment of the battlefield on various types of frequency equipment, and provide battlefield electromagnetic information protection for equipment application.
Development of an Automated System for Three-Dimensional J-Integral Analysis
Authors: Lee Joon-Seong 
Published: October 2019

Abstract
By integrating the 3D solid modeler with the universal FEM code, an automatic nonlinear analysis system for 3D crack problems has been developed. A geometry model, that is, a solid containing one or several 3D cracks is defined. Multiple distributions of local node density are selected and automatically overlapped with each other over the geometry model using fuzzy knowledge processing. Nodes are created by the bucketing method, and tetrahedral square tetrahedral solid elements are generated by the Delaunay triangulation technique. A complete finite element (FE) model is created and stress analysis is performed. In this system, analysts can significantly reduce the burden of introducing 3D cracks into FE models and estimating fracture mechanics parameters. This paper describes a methodology for realizing such a function and demonstrates the validity of this system.
Decomposition of a complex dynamic system with a network architecture
Authors: Shevchenko V A , Yu Medvedev M 
Published: October 2019

Abstract
The paper presents the method of decomposition of a complex dynamic network based on the diacoptic approach. The proposed method is aimed at identifying independent network segments, the removal of which from the overall structure will not affect the overall system performance. Segments are formed as simple paths in the graph model of the system with the smallest weight of incident edges and checking the condition for maintaining the balance of the product flow as applied to the transportation problem. In the general case, the presented decomposition method makes it possible to divide a complex technical object with the network architecture into subsystems, simplifying the process of analysis and control. In the case when the general task of control and the dynamics of interaction between subsystems allows the system to be divided into unrelated segments, or to limit the interaction along certain lines, the method allows reducing the load on the transmitting elements of the system.
Deformation behaviors of non-oriented silicon steel plate in hot rolling process
Authors: Dong Qiang , Liu Huihui 
Published: October 2019

Abstract
In this paper, the flow stress behaviors of non-oriented silicon steel are investigated by hot compressive experiments and a constitutive model is built based on the experimental data. The constitutive model provides material model for FE numerical investigation. The deformation behaviors of the non-oriented silicon steel during hot rolling process are investigated by a 3D FE model. Contact stress and plate shape in different working conditions are presented. The FE results can provide primary data for the precise shaping of non-oriented silicon steels in hot rolling process.