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SnO2 Nano/Microfibers for Gas Sensors Erika Mudra1,a*, Ivan Shepa1,2,b, Alexandra Kovalcikova1,2,c, Ondrej Milkovic1,2,d and Jan Dusza1,e 1Institute of Materials Research of Slovak Academy of Sciences, Watsonova 47, 040 01 Kosice, Slovakia 2Faculty of Materials, Metallurgy and Recycling, Technical University of Kosice, Letna 9, 040 01 Kosice, Slovakia aemudra@saske.sk, bishepa@saske.sk, cakovalcikova@saske.sk, domilkovic@saske.sk, ejdusza@saske.sk Keywords: Tin oxide, Fibers, Electrospinning, Hollow structure.
(ii) Electrospinning of the prepared solution at the appropriate conditions, preparation of the precursor nanofibers containing ceramics precursor and polymer assistant materials.
Experimental Materials and Methods The preparation of ceramic SnO2 fibers contains 2 steps and starts with the electrospinning of the precursor fibers.
Raman spectroscopy is a useful tool for the characterization of materials (also on the nanosized level) and is a qualitative probe of the presence of lattice defects in solids [8].
Bera, et al., One-dimensional nanostructured materials, Prog.

R. of China 3 School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, PR China 4 Smart-Tech Centre, Institute of Fundamental Technological Research, Polish Academy of Sciences, 02-106, Warsaw, Poland azhangqingxia_hit@hotmail.com, b duanzd@hit.edu.cn, c lukasz.jankowski@ippt.pan.pl Keywords: Structural health monitoring; damage identification; load identification; substructure Abstract.
Load identification is most often performed off-line in time domain [[1] Ł Jankowski, Off-line identification of dynamic loads, Structural and Multidisciplinary Optimization, 2009, 37( 6): 609–623 ] or in frequency domain [[2] H Inoue, H Ishida, K Kishimoto and T Shibuya, Measurement of impact load by using an inverse analysis technique: Comparison of methods for estimating the transfer function and its application to the instrumented Charpy Impact test, Japan Society of Mechanical Engineers International Journal, 1991, 34( 4): 453–458 ].
Journal of Vibration and Acoustics, 2007, 129(1): 58-65 ] presented a two-step iteration procedure to simultaneously identify the moving loads and the damages of an Euler-Bernouli simply supported beam.
Acknowledgements The authors gratefully acknowledge the support of National Science Foundation of China (NSFC) (51108066, 51108067), of the Fundamental Research Funds for the Central Universities(China)(DC13010316) , of the project of Housing and Urban-Rural Development(K2201243, 2013-k2-7), of the Dr.
Financial support of Structural Funds in the Operational Programme-Innovative Economy (IE OP) financed from the European Regional Development Fund-Projectc “Modern material technologies in aerospace industry” (POIG.0101.02-00-015/08), is gratefully acknowledged.

Design of Pressure Tunnel with Reinforcement Concrete Lining under Consolidation Grouting Kai SU 1, a, Yin LI 2, b 1 State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, P.
Table 1 Rock material parameters Rock classification Density （g/cm3） Shear Strength Deformation Modulus Poisson Ratio μ Permeability Coefficient k （cm/s） φ（º） c（MPa） III 2.6 45 0.9 14 0.23 (6~8)×10-5 IV 2.55 35 0.7 9 0.25 (3~5)×10-4 Table 2 Results of tunnel design Rock classification Cracks width /mm Cracks spacing /m Reinforcement stress / MPa Depth of consolidation grouting rock /m Permeability of consolidation grouting rock m/s Water leakage m3/s/m III 0.258 0.947 157.26 0 - 5.21×10-4 0.158 1.764 96.53 4 1.00×10-8 3.97×10-5 0.148 2.085 90.3 7 1.00×10-8 2.57×10-5 IV 0.385 0.762 235.1 0 - 3.24×10-3 0.159 1.734 97.3 4 1.00×10-8 4.17×10-5 0.149 2.058 90.72 7 1.00×10-8 2.66×10-5 It is shown in Table 2 that consolidation grouting can sharply lower water leakage when the depth is 4m and 7m, from 3.24×10-3m3/s/m to 4.17×10-5m3/s/m and 2.66×10-5m3/s/m, in which the permeability of consolidation grouting rock is 1.00×10-8m/s.
Acknowledgements The paper is financially supported by National Natural Science Foundation of China (50809051, 51179140) and the Special Research Fund for the Doctoral Program of Higher Education of China(20100141110060).
Chinese Journal Of Hydroelectric Engineering. 1998,61(2):38-49 (In Chinese)
Chinese Journal Of Rock Mechanics And Engineering. 2002,21(7):1022-1026 (In Chinese)

Because of the irregular polygon to find the minimum bounding rectangle for improving the utilization rate of raw material is crucial.
References [1]Huang xujing.With a preselected depth search steps make it rigidly uniform two-dimensional rectangular optimal layout [J].Journal of computer-aided design & computer graphics .1996, 6 ( 4): 313-316 [2]Graham RL.
Bulletin of science and technology.2007,1(23):21-22 [4]Wang lin, Intelligent optimization algorithm and its application[M].
Journal of Sichuan University ( Engineering Science Edition ), 2001, 33 ( 5): 35-38

After selecting the magnetic material used in the movable magnetic system and immovable magnetic system, we can calculate the lifting ratio (lifting capacity/ weight of permanent magnet) and from this the volume of the permanent magnet can be determined.
Acknowledgment The authors would like to acknowledge funding support from the Jilin Province Science and Technology Progress Project, China (Grant No. 20121003) and funding support from Jilin Province Education Department Scientific and Technological Research Project during National Twelfth Five-Year Plan(Grant No. 2011215).
References [1] Ding Ning: Proceedings of the 3rd international Conference of Rare Earth Development and Applications(1995),p184~186 [2] Ding Ning, Wang Long shan, He Ping: Journal of Jilin University of Technology(Natural Science Edition) vol.031, no.001 (2001),p.86-90 (In Chinese) [3] Xianmin Wang, Ning Ding: China patent 92240596.4 (1989) [4] Xianmin Wang, Ning Ding: China patent 92245257.1 (1989) [5] Ding Ning; Liu Xiao jie; Li Xiao mei: Journal of Changchun University , vol.010 , no.004(2000), p.1-2 (In Chinese)

Kulikov1,d 1Technological Design Institute of Scientific Instrument Engineering, Siberian Branch of the Russian Academy of Sciences, 41, Russkaya str., Novosibirsk, 630058, Russia aevsml@mail.ru, buic@ngs.ru, cstewie89@mail.ru,drstalcker@ngs.ru *corresponding author Keywords: Nanorelief measurement, lateral resolution, deconvolution Abstract.
Preliminary measurement performance evaluation of a new white light interferometer for cylindrical surfaces // Journal of Physics. – 2005. – v. 13 – pp. 28−31 [2] Alexander Höink, Karl Meiners-Hagen, Otto Jusko, Ahmed Abou-zeid.
International Journal of Engineering Science and Technology, 3(3), pp. 1878−1884
Method of forming flat smooth surface of solid material, Patent RU 2453874, 2011

Fractal Research on Cracks of Reinforced Concrete Beams with Different Aggregates Sizes SUN Hong-quan, DING Jun, GUO Jian, FU Dong-liang School of Civil Engineering, University of Science and Technology of Suzhou, Suzhou 215011, China hqsun@mail.usts.edu.cn Key words: fractal geometry; fractal dimension; crack; aggregates size; reinforced concrete beam Abstract: Under the concentrated loads, the crack evolutions of reinforced concrete experimental beams (RCEB) with three different aggregate sizes are studied.
Fig. 2 Cracks on the damaged beams (a) LW-L, (b): LW-M, (c) LW-S Fractal Characteristics of Cracks on the Beam Surface Reinforced concrete is a composite material with complex mechanical situation.
Acknowledgements The research of this paper is supported by the National Science Foundation of China (No. 40772198).
Experimental Research on Diagonal Crack of Reinforced Concrete Simple Beam with High-strength Stirrup Based on Fractal Theory, Journal of Hebei University of Technology[J], 2008(2), 77~82.
Fractal geometry analysis of appearance and propagation of crack in concrete structure, Journal of Dalian University Of Technology[J], 1997(s1), 77~81.

Design of Control System in Strapping Machine for Paper Bills Xinju Zhang *1a, Xiuhong Ma2b 1 College of Mechanical and Electronic Engineering, Hebei University of Science and Technology, Shijiazhuang Hebei 050018, China 2 College of Information Technology, Hebei University of Economics and Business, Shijiazhuang Hebei 050061, China azhangxinju2010@163.com, b ma_xh126@126.com Keywords: Paper Bill; Strapping Machine; PLC Abstract.
The iron unit mechanism swings to the tape and melts the colloidal material and then swings back quickly.
Journal of Zhejiang Industry & Trade Vocational College. 2010（3）71～75
[7] Lin Jin-biao and Zhang Zi-wu.The Design of Delivering-settling Mechanism in JUST - I Fully Automatic Control Large Packing Paper Money Machine [J].Journal of Jimei University Natural Science.2003 (4) 350～352

XB2100125) and by the National Science Foundation of China(NO.51065002).
Ordnance Material Science and Engineering,Vol.32 (2009), p.87-89.
Part K-Journal of Multi-Body Dynamics, Vol.222 (2008), p. 229-242
Journal of Mechanical Engineering.

Introduction With the improvement of people's living standard, people no longer meet the basic material needs, more people with physical and mental and spiritual needs.
Guo: Journal of Sichuan University of Science, Vol. 21 (2011).15, p.131
Li: Journal of Science and Technology, Vol.10 (2011).15, p.31