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Therefore, CLC and steel tube are an alternative to other forms of construction in which the use of both materials can become more economical.
Materials and Methods A total of twenty-four rectangular columns were constructed and tested under concentric compression.
Liang, Behavior of steel fiber reinforced concrete-filled steel tube columns under axial compression, Construction and Building Materials, 95 (2015) 74-85
Ning, Experimental research on properties of high-strength foamed concrete, Journal of Materials in Civil Engineering, 24(1) (2012) 113-118
Wangrakklang, An experimental behaviour of cellular lightweight concrete-filled steel square tube columns under axial compression, Materials Science Forum, 860 (2016) 121-124.

Introduction As a kind of materials used widely in construction, concrete represents the character of multiphase heterogeneity in microcosmic level.
As one of the qusibrittle materials, concrete’s stress-strain curve shows the brittleness clearly.
Journal of China Three Gorges Univ.
(Natural Sciences), 2004，2（1）：22-26(In Chinese)
Chinese Journal of Rock Mechanics and Engineering, 2007, Vol.26, No.9:1773-1780 (In Chinese).

Materials and methods 2.1 Selection of sample and distribution of sampling points Selected four classrooms as sampling points which are sunny classrooms (0407 and 0409) and night side classrooms (0408 and 0410) in the in the Inner Mongolia University.
Zhang, Research progress of indoor air microorganisms, Industrial & Science Tribune, vol. 10, pp. 103-104, 2011
Journal of Henan Normal University (Natural Science Edition), vol. 39, pp. 125-127, 2011
Journal of Microbiology, vol. 31, pp. 102-105, 2011
Chinese Agricultural Science Bulletin, vol. 26, pp. 336-340, 2010

Shewry: Journal of experimental botany Vol.37(1986), p.1863-1871 [19] R.
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Salcedo: Journal of allergy and clinical immunology Vol.120(2007), .1132-1138

Materials and methods Study area.
Science of the Total Environment, 266, p. 195–202(2001)
Journal of Hazardous Materials, 134, p. 74–79(2006)
Journal of Hefei University of Technology(Natural Science), 28(11): p. 1419- 1423(2005)
Journal of East China Normal University (Natural Science), 1: p. 110-115(2005).

Acoustic emission wave is a mechanical wave in essence, which have mechanical wave properties such as volatility and attenuation [[] 秦萍,阎兵,宋仁勇.滑动轴承接触摩擦故障的状态监测[J].中国机械工程,2002,13(8):689-691. ].When the acoustic emission waves are spread to the structure surface, and then received by acoustic emission sensor, by analyzing the detected acoustic emission signal can get acoustic emission source and spread path information, so, this methods can recognize the state of materials or equipment, which namely acoustic emission testing.
Because the sensor1 was installed on the bearing pedestal and near from the source of fault, the AE signal was more obvious, but sensor2 was installed on the base and far away form the source of fault, the AE signal become weaker when spread in the material, that make AE signal was drowned by a lot of noise.
Acknowledgement Financial support from Aid program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province, the CEEUSRO special plan of Hunan province (2010XK6066), The Industrial Cultivation Program of Scientific and Technological Achievements in Higher Educational Institutions of Hunan Province (10CY008), New Century Excellent Talents (NCET-08-0677), Natural Science Foundation of Hunan Province Key Project (09JJ8005), National natural science foundation of China (51075140) are gratefully acknowledged.
Luo, AE based fault diagnosis of rolling bearings by use of ICA and SVM, Journal of Vibration and Shock, 27 ( 2008) 150-153
Guo, et al, Fault Diagnosis Method based on Multi-Sensor Installed on the Base and KPCA, Chinese Journal of Scientific Instrument,7(2011) 1551-1557

Vaerenbergha: Journal of Materials Processing Technology, Vol. 149 (2004), p. 616 [2] I.
Yadroitsev, Ph.Bertrand and I.Smurov: Applied surface science, Vol. 253 (2007), p. 8064 [3] W.
Badrossamay: Journal of Engineering Manufacture, Vol. 219 (2005), p. 339 [5] M.
Hopkinson: Journal of materials processing technology, Vol. 195 (2008), p. 77 [7] D.
Yadroitsev: Rapid Prototyping Journal, Vol. 2 (2004), p. 78

China 4State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P.R.
) 130.7(6) C(6)-N(2)-Co(1) 112.0(5) C(13)-N(3)-Co(1) 130.1(6) C(17)-N(3)-Co(1) 111.5(5) C(22)-N(4)-C(18) 118.2(7) C(22)-N(4)-Co(1) 129.0(5) C(18)-N(4)-Co(1) 112.7(5) O(3)-N(5)-O(1) 128.8(7) O(3)-N(5)-O(2) 124.1(7) O(1)-N(5)-O(2) 107.2(6) N(5)-O(1)-Co(1) 91.9(4) N(5)-O(2)-Co(1) 91.3(4) N(1)-C(1)-C(2) 121.4(8) N(1)-C(1)-H(1) 119.3 C(3)-C(2)-C(1) 120.5(8) N(1)-C(5)-C(4) 122.4(7) C(6)-C(5)-C(4) 121.8(7) ____________________________________________________________ Acknowledgments This study were supported by the Natural Science
ZR2010BL025)，Open Project of State Key Laboratory of Supramolecular Structure and Materials (No. sklssm201323)(Jilin University), State Key Laboratory of Inorganic Synthesis and Preparative Chemistry (No. 2011-13)(Jilin University).
Journal of Chemical Crystallography, 2004, 34(3), 199-202 [4] YANFEI QI, XINLONG WANG, ENBO WANG, CHAO QIN and HAO NA, Journal of Coordination Chemistry, 2005, 58(15),1289–1297 [5] YANG GUO, YU-HUA FENG, ZHAN-QUAN LIU and DAI-ZHENG LIAO, Journal of Coordination Chemistry, 2007, 60(24), 2713–2720 [6] TIE-JUN CAI, WEN-JUN JIANG, QIAN DENG, ZHEN-SHAN PENG, YUN-FEI LONG, HONG LIU and MEI-LING LIU, Journal of Coordination Chemistry, 2008, 61(20), 3245–3252 [7] XIAN WEN HUANG, XUE JIAO CHEN, JIAN LIANG SHEN and GUO JUN SU, Journal of Coordination Chemistry, 2010, 63(9), 1570–1581 [8] K.

Materials and Methods 2.1 Bioleaching.
Acknowledgments This project was financially supported by the National Natural Science Foundation of China (No.51574036).
International Journal of Minerals, Metallurgy and Materials,12 (2013) 1130-1133
CIESC Journal, 65 (2014) 1808-1814
ISME Journal, 8 (2010) 989-1001

The manufacturer offers to pay a certain amount of money to collect the right amount of used materials from the market.
using the used materials.
Management Science, 2004, 50 (2), 222–238
Journal of Operations Management, 2007, 25 (6), 1123–1140
Journal of Operations Management, 2007, 25 (6), 1161–11