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Cyber Development of Government Service Platform in Social Public Administration

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学术界 2016年第2期 303-307页

作者： Niu Gang Luoyang City Development investment group Co. Ltd.

The cyber development of government service platform is just to integrate all the superiorities of the government to strengthen its roles such as service,performance and function to drive the social development ***,the social public administration will take this opportunity to optimize the cyber information service platform to make the civic administration oriented to the social development to maximize its functions of organization,coordination and service to protrude the ascendancy of the web era so as to lay a solid foundation for the leap development of the public administration.

关键词：信息服务平台网络化发展社会发展公共管理政府跨越式发展优化网络城市管理

Rheological Properties of Conductive Asphalt Binders Containing Graphite and Carbon Fiber Before and After Ageing

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Journal of Wuhan University of Technology(Materials Science) 2013年第3期28卷 557-559页

作者：孙长军 TANG Ning PAN Pan 吴少鹏 State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Caofeidian Development investment group Co. LTD

Modified asphalt binders were prepared by adding conductive materials, graphite and carbon fiber. The rotation thin film oven test （RTFOT） and pressure age vessel test （PAV） were conducted to simulate the binder aging in the field. Rheological properties of graphite and carbon fiber modified asphalt binder were investigated by the empirically rheological properties （penetration and softening point） and the dynamic shear rheometer （DSR） test. Results show that physical properties of asphalt binder change with conductive material mixed. DSR tests present that the values of complex modulus increase while phase angles decrease under a proper amount of graphite and carbon fiber. Rutting parameters point out that graphite can improve the rutting resistance of asphalts. Rheological parameters can be used to assess aging.

关键词： graphite carbon fiber rheological properties aging

Finite size specimens with cracks of icosahedral Al Pd Mn quasicrystals

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Chinese Physics B 2014年第5期23卷 404-413页

作者：杨连枝 Ricoeur Andreas 何蕃民高阳 College of Science China Agricultural University College of Engineering China Agricultural University Institute of Mechanics University of Kassel Sichuan Hydropower investment & Management group LTD

Icosahedral quasicrystals are the most important and thermodynamically stable in all about 200 kinds of quasicrystals currently observed. Beyond the scope of classical elasticity, apart from a phonon displacement field, there is a phason displacement field in the elasticity of the quasicrystal, which induces an important effect on the mechanical properties of the material and makes an analytical solution difficult to obtain. In this paper, a finite element algorithm for the static elasticity of icosahedral quasicrystals is developed by transforming the elastic boundary value problem of the icosahedral quasicrystals into an equivalent variational problem. Analytical and numerical solutions for an icosahedral A1-Pd-Mn quasicrystal cuboid subjected to a uniaxial tension with different phonon-phason coupling parameters are given to verify the validity of the numerical approach. A comparison between the analytical and numerical solutions of the specimen demonstrates the accuracy and efficiency of the present algorithm. Finally, in order to reveal the fracture behavior of the icosahedral A1-Pd-Mn quasicrystal, a cracked specimen with a finite size of matter is investigated, both with and without phonon-phason coupling. Meanwhile, the geometry factors are calculated, including the stress intensity factor and the crack opening displacement for the finite-size specimen. Computational results reveal the importance of pbonon-phason coupling effect on the icosahedral A1-Pd-Mn quasicrystal. Furthermore, the finite element procedure can be used to solve more complicated boundary value problems.

关键词： icosahedral quasicrystals finite-size crack specimen finite element method cuboid

Correlation between carbon emissions,fuel consumption of vehicles and speed limit on expressway

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第4期11卷 631-642页

作者： Chao Gao Jinliang Xu Miao Jia Zhenhua Sun School of Highway Chang'an UniversityXi'an 710064China Shaoxing Communications investment group Co. Ltd.Shaoxing 312000China

This paper aimed to investigate the correlation between carbon emissions,fuel consumption,and speed limit.A theoretical model was derived based on the energy conservation law,which expresses the relationship between vehicle's fuel consumption and ***,a total of 40 sets of fuel consumption data were collected through field tests to verify the accuracy of the theoretical model at different speeds and different road longitudinal slope *** fuel consumption was then converted to carbon emissions according to the carbon emission factors specified by Intergovernmental Panel on Climate Change(IPCC).In the field experiment,two types of cars and trucks,which are most common on the expressways in China,were ***,the travel speed under different posted speed limits was obtained through the previously established model,and the carbon emission changes of different vehicle types at different limited speeds are *** results show that the speed limit has a significant impact on fuel consumption and carbon *** the speed limit increased from 80 to 120 km/h,average vehicle speeds increased about 21%-27%,and fuel consumption and carbon emissions increased from approximately 33%-38%.Another interesting result was that the vehicle's fuel consumption and carbon emissions are only affected by *** results of the study explore the effect of speed limits on carbon emissions and provide evidence for road managers to set reasonable speed limits.

关键词： Vehicle carbon emission Vehicle fuel consumption Posted speed limit Average speed Road longitudinal slope

Application of coal mine roof rating in Chinese coal mines

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International Journal of Mining Science and Technology 2018年第3期28卷 491-497页

作者： Wang Yongyin Taheri Abbas Xu Xianbi Mining College Guizhou University School of Civil Environmental and Mining Engineering University of Adelaide Shanjaoshu Coal Mine Guizhou Panjiang Investment Holdings Group Co. Ltd

The coal mine roof rating(CMRR) is a measure of roof quality or structure competency for bedded roof types typically of underground coal mines. The CMRR has been used widely in the US, South Africa,Canada and Australia. In order to investigate the application of the CMRR system in Chinese coal mines,two coal mines in China located in Panjiang Coal Field in Guizhou Province were investigated. Field data were collected which is required to calculate the CMRR value based on underground exposure. The CMRR values of 11 locations in two coal mines were calculated. The investigations demonstrated that the chance of mine roof failure is very low if the CMRR value is more than 50, given adequate support is installed in mine. It was found that the CMRR guideline are useful to preliminarily investigate stability in Panjiang Coal Field mines.

关键词： Coal mine roof rating Underground mine Roof stability Panjiang coal field

Identification of the key thermal points on machine tools by grouping and optimizing variables

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Journal of Harbin Institute of Technology(New Series) 2011年第4期18卷 87-93页

作者：梁睿君叶文华罗文俞辉杨琪 Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology Nanjing University of Aeronautics & Astronautics TONTEC Technology investment group Co.Ltd.

The grouping and optimization approach to identify the key thermal points on machine tools is *** solve the difficulty in grouping because of the high correlated variables from distinct groups,the variables grouping technique is *** variables are sorted according to their relativities with the thermal *** representative temperature variables are determined by analyzing the variable correlation in sort order and removing the other variables in the same *** the diverse effect of importing the different variables on thermal error model,the method of variable combination optimization is *** models made up of different combination of representative temperature variables are evaluated by the index of both the determined coefficient and the average residual squares to select the combination of the temperature *** the machine tools with complicated structures which need more initial temperature measuring points the improvement is *** improved approach is applied to a precision horizontal machining center to identify the key thermal *** results show that the proposed approach is capable of avoiding the high correlation among the different groups' variables,effectively reducing the number of the key thermal points without depressing the prediction accuracy of the thermal error model for machine tools.

关键词： NC machine tools error compensation thermal error key thermal points fitting accuracy

Advancing healthcare through laboratory on a chip technology:Transforming microorganism identification and diagnostics

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World Journal of Clinical Cases 2025年第3期13卷 9-19页

作者： Carlos M Ardila Department of Basic Sciences Biomedical Stomatology Research GroupUniversidad de Antioquia U de AMedellín 0057Colombia

In a recent case report in the World Journal of Clinical Cases,emphasized the crucial role of rapidly and accurately identifying pathogens to optimize patient treatment ***-on-a-chip(LOC)technology has emerged as a transformative tool in health care,offering rapid,sensitive,and specific identification of *** editorial provides a comprehensive overview of LOC technology,highlighting its principles,advantages,applications,challenges,and future *** studies from the field have demonstrated the practical benefits of LOC devices in clinical diagnostics,epidemiology,and food *** studies have underscored the superiority of LOC technology over traditional methods,showcasing improvements in speed,accuracy,and *** future integration of LOC with biosensors,artificial intelligence,and data analytics promises further innovation and *** call to action emphasizes the importance of continued research,investment,and adoption to realize the full potential of LOC technology in improving healthcare outcomes worldwide.

关键词： Laboratory-on-a-chip Microorganism identification Diagnostics Point-ofcare testing Biosensors

Shaking table test of seismic responses of anchor cable and lattice beam reinforced slope

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Journal of Mountain Science 2020年第5期17卷 1251-1268页

作者： ZHANG Jian-jing NIU Jia-yong FU Xiao CAO Li-cong XIE Qiang School of Civil Engineering Southwest Jiaotong UniversityChengdu 610031China Chengdu City Construction investment&Management group Co.Ltd. Chengdu 610036China

As a combined supporting structure,the anchor cable and lattice beam have a complex interaction with the slope *** order to investigate the seismic behaviors of the slope reinforced by anchor cable and lattice beam,a largescale shaking table test was carried out on a slope model(geometric scale of 1:20)by applying recorded and artificial seismic waves with different *** acceleration and displacement of the slope,the displacement of lattice beam and the axial force of anchor cable were obtained to study the interaction between the slope and the supporting *** test results show that:(1)the acceleration responses of the slope at different relative elevations display obvious nonlinear characteristics with increasing of the peak ground acceleration(PGA)of the inputted seismic waves,and the weak intercalated layer has a stronger effect on acceleration amplification at the upper part of the slope than that at the lower part of the slope;(2)the frequency component near the second dominant frequency is significantly magnified by the interaction between the slope and the supporting structure;(3)the anchor cables at the upper part of the slope have larger peak and residual axial forces than that at the lower part of the slope,and the prestress loss of the anchor cable first occurs at the top of the slope and then passes down;(4)the peak and residual displacements inside the slope and on the lattice beam increase with the increase of relative *** the inputted PGA is not greater than 0.5 g,the combined effect of anchor cable and lattice beam is remarkable for stabilizing the middle and lower parts of the potential sliding *** research results can provide a reference for the seismic design of such slope and the optimization of supporting structure.

关键词： Earthquake engineering Shaking table test Anchor cable Lattice beam Dynamic response

Deformation control criterion of shield tunnel under lateral relaxation of soft soil

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Frontiers of Structural and Civil Engineering 2023年第5期17卷 780-795页

作者： Shimin WANG Xiaoyu PENG Hang ZHOU Xuhu HE Anqi ZHOU Bing CHEN Key Laboratory of Transportation Tunnel Engineering Ministry of EducationSouthwest Jiaotong UniversityChengdu 610036China Guangdong Provincial Railway Construction investment group Co. LtdGuangzhou 510080China

Metro shield tunnels under the lateral relaxation of soil(LRS)are susceptible to significant lateral deformations,which jeopardizes the structural safety and ***,deformation control standards for such situations have not been clearly ***,based on a specific case,a model test is conducted to realize the LRS of a shield tunnel in a sandy stratum to reveal its effect on segment ***,a deformation control criterion is *** LRS is simulated by linearly reducing the loads applied to the lateral sides of the segment *** lateral unloading,the lateral earth pressure coefficient on the segment decreases almost exponentially,and the structural deformation is characterized by horizontal expansion at the arch haunches and vertical shrinkage at the arch vault and arch *** on the mechanical pattern of the segment structure and the acoustic emission,the deformation response of a segment can be classified into three stages:elastic and quasi-elastic,damage,and rapid deformation *** a shield tunnel with a diameter of approximately 6 m and under the lateral relaxation of sandy soil,when the ellipticity of the segment is less than 2.71%,reinforcement measures are not ***,the segment deformation must be controlled when the ellipticity is 2.71%to 3.12%;in this regard,an ellipticity of 3%can be used as a benchmark in similar engineering projects.

关键词： shield tunnel lateral relaxation of soil deformation control criterion of segment structure model test