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Online since: July 2011
Authors: Jian Bin Zang, Ming Wei Cai, Nai Ping Gao
The process of heat transfer is quite a complicated one involving conduction, convection and radiation through different solid materials and the air inside and outside the railway vehicle.
Besides for the design numerical simulation can also provide guidance for the test and save a lot of labor, materials and time.
Vehicle body: Properties of aluminum alloy body frame, insulation, upholstery, air ducts, and floor were defined by the materials according to a manual [8].
Whether the meshing is appropriate or not is the key to better numerical simulation results.
Dictionary of New Materials[M].
Online since: May 2014
Authors: Remko Akkerman, Ulrich Sachs, Sebastiaan P. Haanappel
Box 217, 7500AE Enschede, the Netherlands 3 AniForm Engineering, Palatijn 15/17, 7521PN Enschede, the Netherlands aulrich.sachs@tprc.nl, br.akkerman@utwente.nl, cs.haanappel@aniform.com Keywords: bending, thermoplastic, composite, UD carbon PEEK Abstract.
The availability of standard pre-impregnated unidirectional reinforced thermoplastic tape and its capability for fusion bonding and thermoforming without the need for an autoclave, allow for automated production technics, which are not available for thermoset materials.
This is the key for shorter cycle times and cost reductions, which promotes greater acceptance also in other industries, e.g. car manufacturers.
Bending characterization methods for UD materials that operate at elevated temperatures are scarcely available.
Bhattacharyya, “Chapter 9 Bending of continuous fibre-reinforced thermoplastic sheets,” in Composite Materials Series, vol.
Online since: December 2012
Authors: Da Qi Xu, Tian Hai Hua
Research on the Evaluation Index System of Technological Innovation Capability in Cement Industry XU Da-qi1,a, HUA Tian-hai2,b 1 College of Management Engineering, Anhui Polytechnic University, Anhui china, 21 College of Management, Anhui Polytechnic University, Anhui china, axudaqi@ahpu.edu.cn,bhuatianhai163@163.com Keywords: Cement Industry, Technological Innovation Capability, Process Theory, System Theory, Index System Abstract: Combinating the process theory and system theory organically, this paper views enterprise’s technological innovation as a continuously improved system process.
Review of technological innovation capability evaluation Domestic and foreign research on technological innovation capability evaluation mainly lies in three key areas: first, the research on the connotation of technological innovation capability; second, the research on the building of technological innovation capability evaluation index system; third, the research on the method of technological innovation capability evaluation.
According to the actual conditions of cement industry, the aspect of input covers the optimized R & D of production process, the replacement of cement new products, raw materials & fuels, and environmental protection technology.
The manufacturing capability mainly contains the advanced levels of equipments, the technology levels of workmen, productivity, the replacement rate of raw material and fuel, and energy utilization rate.
and fuel The numbers of the personnel for the replacement R&D of cement new products, raw material divided by the total numbers of enterprise’ labors A2.3:the personnel input of the R&D of environmental protection technology.
Online since: June 2004
Authors: Michael Dudley, X. Huang, W. Cho, Robert S. Okojie, Philip G. Neudeck
Neudeck2 1 Department of Materials Science and Engineering, State University of New York at Stony Brook, Stony Brook, New York 11794-2275, USA 2 NASA Glenn Research Center, 21000 Brookpark Road, M/S 77-1, Cleveland, Ohio 44135, USA Keywords: SiC epitaxial structure, characterization, high-resolution X-ray diffraction, reciprocal space mapping Abstract.
For these materials, it is necessary to perform triple-axis reciprocal space mapping (RSM), a two-dimensional point-to-point scan, to obtain the accurate values of the lattice misorientations and mismatch [3,4].
Department of Energy, Division of Materials Sciences and Chemical Sciences.
Huang: in Encyclopedia of Materials: Science and Technology (Elsevier, New York 2001), p. 9813
Keys: Appl.
Online since: May 2017
Authors: Boris A. Tarasov, Igor I. Konovalov, Eduard M. Glagovskiy
Comparison of irradiation creep of nitride fuel and properties of cladding materials shows that under parameters of fast reactors and typical design of fuel element it is impossible to implement restraining of external nitride swelling.
Irradiation creep is a key parameter for determining the features of the fuel cladding mechanical interaction with swelled fuel.
This makes it possible with a lack of data to estimate the creep of nitride fuel under irradiation, using existing theoretical predictions about the effect of irradiation on self-diffusion in materials.
Sokolov, Complex of experimental tools for investigation of irradiation creep and dimensional stability of fuel for power reactors, Engineering Physics 4 (2004) 27-30
Matzke, Atomic mechanisms of mass transport in ceramic nuclear fuel materials, J.
Online since: September 2021
Authors: Bogdan Fleacă, Cristina Simion, Mirona Popescu, Andreea Maria G. Militaru
For an enterprise to create an innovative context related with sustainability, it must take into consideration a minimum set of methods of organizational problem solving.[14] Nowadays, project management has become a dominant method of organizational problem solving, constituting a key method in how innovation can be achieved.[15] Projects involve both research and practice combining and adapting resources, knowledge, and structure into new ways of viewing the SD.
Dearing (2000) argues that improved technology and engineering skills are essential tools for supporting sustainable development within a company.
The participants were encouraged to walk to the venues instead of using any other mean of transportation, the venues used 100% renewable electricity, and only digital materials.
Another project worth being mentioned is reducing the impact of digital networks – 25 billion dollars annual energy costs of running mobile networks globally, and 5 times increase in global mobile data by 2025. [22] When about H&M can be mentioned they are introducing new sustainable materials such as the cellulosic fiber made by Infinited Fiber Company from recycled cotton textiles, a board material from recycled office paper, and recycled cotton.
Extracting key factors for sustainable development of enterprises: Case study of SMEs in Taiwan.
Online since: December 2013
Authors: Wei Zhou Zhong, Wei Zhao, Zhi Bin Xing, Xiao Hui Ding
Assessing the Impacts of Urbanization on the Ecosystem Services of City in Northwestern China: Case Study of Xi’an Xiaohui Ding1, a, Wei Zhao2,b ,Weizhou Zhong1,c* and Zhibin Xing1,d 1 School of Economics and Finance, Xi’an Jiaotong University, Xi’an, China 2 Department of Automobile Engineering, Shaanxi College of Communication Technology, Xi’an, China axhding@mail.xjtu.edu.cn, bzhaowei811124@tom.com, cweizhou@mail.xjtu.edu.cn, dxzbsuper@163.com, * Corresponding Author:at 74, Yantaxilu Road, 710061, Xi’an, China.
, and nominated as the key hinterland open city by the State Council.
The development of tourism has likewise brought more pressures on local environmental carrying capacity. 2.2 Research materials Survey of Xi’an digital detailed land-use map on 1:25,000 scale for the year 1990 and 2000, LANDSATE TM satellite imagery for the year 1988, 1995, 2006 and 2010, and LANDSATE ETM+ satellite imagery for the year of 2000 are used for the study.
Ecosystem services function Forest Grassland Arable land Wetland Water body Barren land Gas regulation 3.5 0.8 0.5 1.8 0 0 Climate regulation 2.7 0.9 0.89 17.1 0.46 0 Water supply 3.2 0.8 0.6 15.5 20.38 0.03 Soil formation and retention 3.9 1.95 1.46 1.71 0.01 0.02 Waste treatment 1.31 1.31 1.64 18.18 18.18 0.01 Biodiversity protection 3.26 1.09 0.71 2.5 2.49 0.34 Food 0.1 0.3 1 0.3 0.1 0.01 Raw material 2.6 0.05 0.1 0.07 0.01 0 Recreation and culture 1.28 0.04 0.01 5.55 4.34 0.01 Total 21.85 7.24 6.91 62.71 46.01 0.42 Ecosystem service value of one unit of each land use category was then assigned based on the nearest equivalent ecosystems (Table 4).
Fig.4 Urbanization rate and ESV of Xi’an Conclusion Land use can be applied as a proxy measure of ecosystem services through matching the land use categories with equivalent biomass, and it also proved to be an efficient tool to monitor environmental impact caused by the construction of super-large engineer projects through calculating the variation of ecosystem services value based on land use data.
Online since: August 2019
Authors: Lawrence Zahemen Tuleun, Jimoh Alao, Wasiu John
The measurement of test samples (CCW and RHA) and concrete constituent materials was done by weight.
Websjournal of Science and Engineering Application. 2018; WESEA ISSN, 1974-1400-X: 8(1): 494 – 502
Cementing materials from calcium carbide resisdue rice husk.
Journal of Materials in Civil Engineering. 2003; 15(5): 470-475
IOP Conf Series: Materials and Science Engineering. 2016; 149.
Online since: May 2011
Authors: Zhi Wu Yu, Zhong Qiang Wang
The Experimental Research and Theoretical Analysis of Unbonded Prestressed Concrete Flat Beams at High Temperature Zhongqiang Wang 1,2,a and Zhiwu Yu 2,b 1School of Civil Engineering and Architecture,Changsha University of Science & tecnology, China 2School of Civil Engineering and Architecture, Central South University, China awzq200274@163.com, bzhwyu@mail.csu.edu.cn Keywords: prestressed; concrete flat beam; under fire; nonlinear finite element; program Abstract.
Engineering Structures(2009) [8] Ellobody.E.Whole-building behaviour of bonded post-tensioned concrete floor plates exposed to fire.
Engineering Structures(2009) [9] Zhoudao Lu, Gang Li, Lixin Xu.
China civil engineering journal (2003) (in Chinese) [10] Litang Gao, Yuli Dong, Aimin Yuan.
China civil engineering journal (2006) (in Chinese) [12] Xucheng Wang, Min Shao.
Online since: December 2011
Authors: Qiao Ping Xu, Fu Sheng Han, Gang Ling Hao
Low-frequency damping behavior of porous magnesium Gang Ling Hao1,a, Qiao Ping Xu1,b and Fu Sheng Han2,c 1 College of Physics and Electronic Information, Yan’An University, Yan’An 716000, China 2 Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China aglhao@issp.ac.cn, bxiaoppingxu@126.com, cfshan@issp.ac.cn Keywords: Porous magnesium, Internal friction, Damping, Dislocation Abstract.
Introduction Porous metals or metal foams are a new class of materials with a series of favorable functional properties and engineering applications including high damping capacity [1,2].
As a consequence, it is necessary to carry out a further study with an expectation to obtain some desirable information for better use or design high damping materials.
Experimental The Mg powder with a purity of around 99.5% and carbamide (CO(NH2)2) particles with a chemical purity of around 99% were used as the starting materials.
Baker: ‘Magnesium and Magnesium Alloys’, ASM Specialty Handbook, ASM International, the Materials Information Society, Ohio, (1999) [10] Z.K.
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