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Online since: May 2011
Authors: Pu Liu
Therefore, application and innovation is the core of IOT development, Innovation 2.0 which the user experience as the core is the soul of the IOT development. 2 Core technologies of the Internet of Things The foundation and core technology of IOT is still Internet technology, IOT is a network technology expanded on Internet technology; its clients extended to any goods and materials, to exchange information and communication.
International Telecommunication Union (ITU) treats radio frequency identification technology (RFID), sensor technology, nanotechnology, smart materials embedded networking technology as the key technologies. 2.1 Central processing technology established on the basis of the cloud computing Core purpose of IOT is to enhance the central processing capacity.
Sensing technology is a modern interdisciplinary engineering science which major research on access to information from the natural source, and processing (transformation) and recognition.
In the future, smart materials applications will be everywhere together, when the weather sensor system to predict typhoons, traffic sensor unit automatically notifies the returning fishing boats, high-speed off, designated transfer area residents; When an accident occurs, the road monitoring system automatically notifies emergency hospital and provide the best route, GPS system will prompt road vehicles and from the bypass; Monthly, the public service system will automatically record of utilities costs, and automatically debit the bank account after notice headed; etc.
Journal of Consumer Policy, 2008 [3] Marie-José Montpetit, The future of IPTV Connected, mobile, personal and social, Multimedia Tools and Applications, 20 March 2010
Online since: August 2014
Authors: Linda Makovická Osvaldová, Anton Osvald, Danica Kačiková
Coniferous wood after thermal decomposition Changes in Chemical Composition There are solid materials that directly enter into reaction with oxygen (e.g. metals).
There are other materials which change their chemical composition in the first phase of heating-up, or which change the composition of their basic structural elements, thereby producing inflammable gases and ignite.
Wood is an example of the latter material.
This material is very resistant to sudden changes of temperature when the temperature difference is greater than 70 °C and it is also very resistant to high temperatures (1,100 °C).
American International Journal of Contemporary Research (AIJCR), 2/2012, Vol. 7, New York : Center for Promoting Ideas (CIP), 2012, s. 37 – 46.
Online since: October 2019
Authors: Viorel Bogdan Rădoiu, Mirela Cotrumbă, Alexandru Pintilie
Basic Aircraft Deceleration Systems In the current exploitation, there are three basic systems used to decelerate aircraft: with barrier, with cables and with absorbent materials.
The absobent system consists of a pavement bed made of easily deformable materials located at the ends of the runway in the safety zone.
Density of steel wire rope materials ρ 7.8·10-6 kg/mm3 11.
[6] Hernando J.L. and Co., Carrier Suitability of Land-Based Aircraft, 28th International Congress of the Aeronautical Sciences, ICAS 2012, Brisbane, Australia, 2012
[7] Bing Xu and Co., A three dimensional approach to model steel wire ropes used in high energy absorber apparatus, International Journal of Solids and Structures no. 51, Elsevier Ltd., 2014
Online since: March 2011
Authors: Lei Wang, Xiao Ying Cui, Hui Ming Li
The heavy industrial structure is the main cause to increase the energy consumption The indicators of industrial enterprises above designated size in TBNA have showed that the three trades of “manufacture of raw chemical materials & products”, “smelting & pressing of metals”, and “processing of petroleum, coking, & processing of nuclear fuel” have taken 70% in total energy consumption but only 25% in total gross industrial output value (Table 2, 3).
Table 2 Ratio of Total Energy Consumption by Main Highly Energy-Consuming Trades Main Highly Energy-Consuming Trades 2004 2005 2006 2007 2008 Manufacture of Raw Chemical Materials & Chemical Products 37.0 41.7 20.8 16.5 20.3 Smelting & Pressing of Metals 10.3 19.3 23.0 39.3 37.8 Processing of Petroleum, Coking,& Processing of Nuclear Fuel 13.7 5.1 21.0 16.1 13.1 Total 61.0 66.1 64.8 71.9 71.1 Table 3 Ratio of Total Gross Industrial Output Value by Main Highly Energy-Consuming Trades Main Highly Energy-Consuming Trades 2004 2005 2006 2007 2008 Manufacture of Raw Chemical Materials & Chemical Products 8.0 5.0 4.9 5.0 5.2 Smelting & Pressing of Metals 8.3 9.7 9.2 13.7 15.5 Processing of Petroleum, Coking,& Processing of Nuclear Fuel 7.5 9.1 8.5 8.2 6.7 Total 23.8 23.8 22.5 26.9 27.5 Data source.
On one hand, use appropriate policy instruments to guide and improve low-carbon industries, such as information and service industry, which have less environmental impact and higher added value due to the limited energy and material consumption.
American Journal of Applied Science, 2005, 2(7): p1166~1168
Online since: February 2011
Authors: Dong Ying Ju, Rui Ming Ren, Tian Cang Zhang, Peng Tao Liu
Numerical Simulation and Experiment of Linear Friction Welding Process of Ti6Al4V alloy Pengtao Liu1,a, Ruiming Ren1,b, Tiancang Zhang2,c, Dongying Ju1,d 1Department of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, China 2Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China aptliu@yahoo.cn, brmren@djtu.edu.cn, cbjztc@yahoo.com.cn, ddyju@sit.ac.jp Keywords: linear friction welding, numerical simulation, Ti6Al4V alloy Abstract: Using finite element analysis software of COSMAP, a three-dimensional elastic-plastic finite element model of linear friction welding (LFW) process of Ti6Al4V alloy was established.
As an advanced joint technology, LFW has been mainly used in manufacturing and repairing blisks of aero-engines due to its high efficiency, good quality and material saving characteristics.
LFW is a solid state process enabling joining workpieces together through combination of the plasticized materials at the interface, while the plastic deformation is generated by frictional force and heat produced as one workpiece is under pressure in a direct reciprocating mode relative to another [1].
Fu:Journal of Northwestern Polytechnic University.
Ju and T.Inoue: Key Engineering Materials Vols. 345-346 (2007), p. 955 [5] W.A.
Online since: March 2017
Authors: Cristina E. Lanivschi, Oana Neculai, Iulian Zăpodeanu, Dorina Nicolina Isopescu, Ionuț Ovidiu Toma
The data presented in this paper is part of an innovative product research requested by MACON company, and is focused on establishing the performance parameters of prefabricated hybrid lintel elements, the parameters being limited by the type of used materials, by cross-section and openings spans sizes, and by the manufacturing technology.
Hybrid lintels description Used materials.
The two module types of hybrid lintels, with different volumes of concrete and AAC material, are presented in Fig. 2.
Loads and boundary conditions in FEM analysis Material properties.
Haroun, Nonlinear Modeling and Analysis of AAC in-filled Sandwich Panels for out of Plane Loads, World Academy of Science, Engineering and Technology International Journal of Civil, Environmental, Structural, Construction and Architectural Engineering, Vol. 6, No. 4 (2012).
Online since: August 2013
Authors: Yong Zhou, Shi Li
Analysis of Variable Section Piezoelectric Harvester Yong Zhou1, a, Shi Li1, b 1 College of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang, China azzz_us@163.com, bli_shicn@yahoo.com.cn Keywords: Piezoelectric Harvester, MEMS, Curved Beam, Finite Element Method Abstract.
The material properties of PZT and PDM can be referenced in literature [6] and literature [14].
In ANSYS the polarization axis of the piezoelectric material should be along the z axis.
Sodano, A review of a power harvesting using piezoelectric materials (2003–2006),” Smart Mater.
Journal Vol. 9(2009 )
Online since: April 2011
Authors: Mohamad Hafiz Mamat, Mohamad Mahmood Rusop, Zuraida Khusaimi
One of the promising semiconductor materials which has been researched intensively is zinc oxide (ZnO).
Science Officer) and Mr.
Kerr: Journal of Solid State Chemistry Vol. 180 (2007), p. 988
Yin: Materials Letters Vol. 63 (2009), p. 275-278
Guo: Materials Letters Vol. 62 (2008), p.3101.
Online since: January 2014
Authors: Zhen Cheng Xu, Shun Yi Li, Qing Yun Liu, Yun Long Fu, Jin Rong Qiu, Hai Jun Peng, Zhi Hua Pang
Co-digestion results increasing of methane yields due to the positive synergistic effects of the mixed materials with complementary characteristics and the supply of missing nutrients by the co-substrate [4,5].
Materials and Methods Experimental setup.
Materials collection and experimental procedure.
The main chemical properties of these materials were shown in Table1.
Physical and chemical properties of raw materials Material TS VS TOC TN C/N pH NOW 16.17% 15..59% 42.93% 0.83% 51.4 4.3 SM 26.89% 20.48% 36.74% 1.85% 19.8 6.1 WAS 25.65% 11.42% 22.43% 3.76% 6 7.9 Inoculum 8.02% 5.58% ______ ______ _____ 7.5 Nine feedstocks which were made by adding a percentage of distilled water to NOW, co-substrates and inoculum were used to load R1-R9.
Online since: August 2018
Authors: Sergey A. Plotnikov, Alexander B. Vladimirov, Anna P. Rubshtein
Such materials demonstrate high rigidity, superb machinability, self-restored and have high chemical, oxidation and corrosion resistance.
Materials and Methods CrAlC films were deposited on tool steel and Si plates by arc sputtering technique using the UVNIPA-1-001 machine.
The mechanical characteristics (hardness and elastic modulus) of CrAlC were measured by nanoindentation technique (NanoTest 600, Micro Materials Ltd, UK) using Berkovich diamond pyramid (indenter).
In addition to monolayer films, multilayer coatings are technologically promising materials for tribological applications.
Hultman, The Mn+1AXn phases: Materials science and thin-film processing, Thin Solid Films 518 (2010) 1851–1878
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