Search results

According to national Modern Distance Education Resources Construction Specifications, network teaching resources are supposed to include: media material, teaching material resource, item bank, paper material, software and network software, network course and subject website, scientific research resource, software resource, literature resource, Q and A, case and resource catalogue index, and so on.
The network teaching resource serves education directly, which is not only an accumulation of teaching materials and data, but also include other non-service behavior devoicing from teaching specialty.
Taken the network teaching resource knowledge base as an example, it refers to the notion of teaching course, software resource, literature material, Q and A and other resources.
Chen: Wuhan University Journal of Natural Science, Vol. 6 (2001), pp.59-62
Journal of Hainan Normal University, Vol. (2007), pp.129132

Eddy currents induced by stimulation current has a skin depth based on skin effect in homogeneous material, which can be calculated by Eq. 3 (3) where f is frequency of stimulation, is electrical conductivity (S/m), and is magnetic permeability (H/m).Then the material is heated by Joule heating, which is caused by resistive heating from eddy currents.
The physical properties of all materials are listed in the Table 1.
Fund resource: Science and technology project of the ministry of transport of PRC.
Journal of Dynamic Systems, Measurement and Control, 2011, 133
Journal of Wuhan University of Technology(Transportation Science & Engineering), 2014,38(1):153-154.

Therefore, the polymers in OSC are coupled with inorganic materials to boost up the efficiency.
Eitan, et al., Surface modification of multiwalled carbon nanotubes: toward the tailoring of the interface in polymer composites, Chemistry of Materials, 15 (2003) 3198-3201
Wang, et al., Hybrid bulk heterojunction solar cells from a blend of poly (3-hexylthiophene) and TiO2 nanotubes, Applied Surface Science, 255 (2008) 1916-1920
Wang, et al., Organic photovoltaic cells: Novel organic semiconducting materials and molecular arrangement engineering, Chinese Science Bulletin, (2012) 1-10
Kim, et al., Hybrid solar cells with ordered TiO2nanostructures and MEH-PPV, Journal of Photochemistry and Photobiology A: Chemistry, 188 (2007) 364-370.

Moreover, the requirements for building material selection, and the pouring tamping and maintenance of concrete are proposed. 4.4 The production of concrete.
The condition of this basement is in good usage. 4.7 The influence of building materials.Generally, there are certain requirements on cement selection and mix proportion in the projects we investigated.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (Grant No. 50978171).References References [1] Yuming, Z, A study on ultra-long concrete framework structure crack control:[dissert], China, Nanjing, southeast university,2006 [2] Lawrence, A.
The crack control technology of large volume concrete [J], Journal of Shandong Jiaotong University, 2009,(04):66-70
[7]Yanying L. a study on the control of concrete structure temperature stress [J].Journal of Electric Power, 2008, (01):38-41 [8]“Code for concrete admixture application technology”GB500119-2003 [9]Shenyang construction standard “regulations for ultra-long basement concrete structure crack control technology”, released on 2007-10-01

Materials and Methods A block diagram of the applied schemes showing the working procedure is presented in Figure 1.
Science, 1966
The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, 1997. 52(4): p.
Nature and science of sleep, 2015. 7: p. 101
Journal of Ship Mechanics, 1999. 3(6): p. 49

Evaluation of the Protection Effect on Copper with Different Sacrificial Anodes Chongbi Wang1, Xiaodong Kong and Zhiqiang Tian Department of chemical and materials, College of Science, Navy university of engineering, Hubei, Wuhan, 430033, China 113720167921@163.com Keywords: Iron alloy, Sacrificial anode, Corrosion.
Table 3 shows the electrochemical performance test results of sample materials.
[5] Shun Wang, Huyuan Sun and Lijuan Sun: Development and Application of Materials.
[6] S.M.A.Shibli, B.Jabeera and R.Manu: Materials Letters.
[8] S.M.A.Shibli and V.S.Gireesh: Corrosion Science.

The main factors affecting the performance characteristics of such materials are the phase composition, dispersibility, the content of acid-base centers.
One of the most dynamically developing methods of formation of oxide ceramic materials is the sol-gel process [7,8].
Materials and Research Methods Calcium carbonate, europium oxide, aluminum nitrate nonahydrate and citric acid were used as initial materials to synthesize calcium aluminate and fluorescent material based on calcium aluminate.
Mitchell Micro-Raman analysis of calcium aluminate fibers formed by inviscid melt spinning, Materials Letters 45 (2000) 138-142
Poelman, Valence states of europium in CaAl2O4:Eu phosphors, Optical Materials Express. 2 (2012) 321-330.

With the method, the drill bit performance could be predict analyzed and the design can be evaluated that enhance the design science and reliability. 1.
From its inception of three-cone drill, there has been the constant pursuit of science and technology workers to improve product quality.
In short, the design of the cone bit is optimized with optimization and computer technology, switching the approximate calculation got by designers’ experience or similar methods to accurate theoretical calculation of the parameters, so that a drill design step into science design stage from the experience trial method.
This greatly improve the accuracy of the bit design, scientific and reliable, and reduce the blind trial and repeated trial times, manpower and material resources, the bit of the development cycle and the development costs of new products and significantly improve the design quality of the bit. 4.
Ma, JJAzar: Dynamics of Roller Cone Bits, Trans.ASME, Journal of Energy Technology, Dec.1985, p. 543–548

Analysis of Electromagnetic Inverse Model of Resistance Spot Welding Fan Naifeng1, 2, a, Luo Zhen 1, 2, b*, Li Yang1, 2, c and Xuan Wenbo1, 2, d 1School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China 2Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin 300072, China awind946553@163.com, blz@tju.edu.cn, cliy12258632@hotmail.com, dbowen.550503@163.com  Keywords: RSW, Magnetic flux density, Ill-posed, Model discrete, Regularization method Abstract.
(2) The material in current loop is non-ferromagnetic material, which means that they are homogeneous isotropic magnetic media, whose magnetic permeability are approximately equal to the magnetic permeability of vacuum, and the small difference of magnetic permeability between air and vacuum is omitted
Experimental In this paper, 5754 aluminum alloy (paramagnetic) is selected as the test material, the size of which is 50 × 20 × 1 mm3.
Expulsing and Its Influence on Weld Quality [J].Welding Journal, 1999, 78(11):373-380
Beijing, Science Press, 2005

Insulated bucket arm is made of materials with good insulation, the folding expansion structure, with the aid of the insulated bucket armcar, power personnel can operate chargely, reducing the labor intensity of the operators, improving labor condition, and making the difficult project realized because of the small space.
The project' distribution charged work robots', undertook by Shandong university of science and technology research center of robot passed the 863 expert acceptance in February 2005 in Jinan, show that our country has entered the world's advanced ranks in this field.
The Design of Precise Location and Self Adjusting Control Device Accurate localization and self-adjusting of high tension charged operation make full use of integration of electric and mechanical technology, use epoxy resin insulating material and aluminum alloy metal materials, can meet the demand of the insulation function and mechanical function, its function parts mainly covers lifting system, rotation system, motor drive and control system, including hoop gear, rotation system, lift system, insulation guide rail, manned platform, the support frame, and other machinery part and motor, remote control device, etc.
Acknowledgements Project supported by Project of Hunan Province Ministry of Education Science Project(12C1098), Hunan Provincial Research Scheme(No.2011GK2020), and Aid program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province, are gratefully acknowledged.
,He,K.F.: Modeling and Analysis of Harmonic in the Mine Hoist Cnverter Based on Double Closed-LoopControl, Journal of Computers,7(2012)1353-1360