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Experimental Material.
Journal of Southwest Jiaotong University, 2008,43(5):633-637 [3] M.M.
Materials Letters 37_1998.201–210； [6] Mustafa Toparl, Faruk Sen, Osman Culha, Erdal Celik.
Journal of Materials Processing Technology, 190 (2007) 26–32; [7] J.
Materials Science and Engineering,A347 (2003) 21-31; [8] J.

Schutt: Materials Performance Vol. 32 (1993), p. 55 [3] E.
Merrick: Materials Performance Vol. 27 (1988), p. 30 [5] W.I.
Pollock: Materials Performance Vol. 38 (1999), p. 77 [6] R.D.
Merrick: Materials Performance Vol. 28 (1989), p. 53 [7] M.
Lee: Materials Science and Engineering A188 (1994), p. 219

Gabbitas, Key Engineering Materials, 520 (2012) 289-294
Gordo, Materials & Design, 60 (2014) 628-636
Gordo, Materials Science & Engineering: A , 527 (2010) 5664-5669
Corbin, Journal of Alloys and Compounds, 618 (2015) 437-448
Huang, Materials Science and Engineering A, 418 (2006) 25-35

Low-k materials are class of materials having k value equal or less than that of silicon dioxide (k ≤ 3.9).
Scherer, Sol-gel science: the physics and chemistry of sol-gel processing, first ed., Academic press, New York, 2013
Pokol, Composition and thermal stability of SiO2-based hybrid materials TEOS-MTEOS system, J.
Journal of Materials Science: Materials in Electronics, 28(2017):14763–14768
Journal of Materials Science: Materials in Electronics, 24(2013):4964-4969

Materials and methods Materials.Tengjiao oil provided by the Xingjiang Company of Hongya.
Acknowledgements This work was financially supported by Sichuan University of Science and Engineering Fund (2011RC20).
Science and Technology of Sichuan Agriculture,2004(9):15-16.
Science and Technology of Food Industry,2010,(8):123-124.
Journal of Jishou University(Natural Science Edition),2007(3):112-116.

Ultrasound-UV Method Detect Oil Content of Oily Sludge from Daqing Oilfield Jie Zhang1,a ,Zhaoyang Wang1,b ,Jingxin Sun2 , Li Wei3 , Binsong Wang4,c *, Jun Ma2 ,Zhongxi Chen2 1 School of Life Science ,Northeast Forestry University, Harbin 150040,China 2Daqing Oilfield Engineering company,Daqing 163712,China 3Department of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China 4 School of Chemistry and Materials Science，Heilongjiang University，Harbin 150080，China a 88530878@163.com b wzyxjtc@163.com c609291321@qq.com Key words: Oily sludge; Oil content; Ultrasound extraction; Ultrasound-UV method Abstract Drained sludge of Daqing oilfield No.4 oil production plant was collected from bottoms of tanks, and the oil content was usually lower than 2%.
In fact, China has the standard requirements, petroleum substances is: when detecting oil content with the infrared spectrophotometer what is extracted with carbon tetrachloride, is not magnesium silicate absorption, and wave number of 2930cm-1, 2960 cm-1, 3030 cm-1 in whole or in part of the department has characteristic absorption bands of the material.
The animal and plant oil content means that the oil content by infrared spectrophotometer, the carbon tetrachloride extraction, and adsorption by magnesium silicate material, animal and plant oil content and oil content of the sum of substances, known as the oil content.
Acknowledgments This work was supported by Youth Science and Technology Fund of Heilongjiang Province(QC07C19), Scientific Foundation of Heilongjiang Office of Education（2008-11531270）, and Youth Science and Technology Innovation Fund of Harbin (RC2009QN015018).
Roychoudhury A potential resource for bioconversion of domestic wastewater sludge,Bioresource Technology ,85(2002),263~272 [4] Jiang Yong,Zhao Ping,Dong Tie-you,Dong Jia-geng, The Method for Detecting oil Content of Oily Sludge,Environment Science and Management, 33(2008),115~117 [5] Li Ji-yun ,Li Li,Feng Cheng ,Ultrasound-uv Method Detect Oil Content in Soil,Journal of the University of Petroleum ,23(1999) , 82~83

The mechanical properties of this fly ash-based cement-zero concrete achieved by polymerization are influenced not only by the behavior of the constituting materials but also by the interaction between these materials.
Temuujin etal.[2009] D50 6.8 mm D50 14.4 mm 70°C paste 45 25 Materials, mix proportions and test method Materials.The binders used in this study are raw fly ash (RFA) produced at the Hadongthermoelectric station in Korea, milling fly ash (MFA) and ordinary Portland cement (OPC).
V., “Fly ash-based geopolymer concrete: study of slender reinforced columns”, Journal of Materials Science, V. 42, 2007, pp. 3124 – 3130
[9] Temuujin, J., Van Riessen, A., and Williams, R., “Influence of calcium compounds on the mechanical properties of fly ash geopolymer paste”, Journal of Hazardous Materials, 2009
T.(2008), “Properties of cementless mortars activated by sodium silicate”, Construction and Building Materials, Vol. 22, Issue 9, pp. 1981–1989.

Compared with collagen, a natural protein with RGD sequence, ASF is expected to have vast application in biomedical materials due to its low price, easy purification, and good mechanical properties.
Materials and Methods Preparation of regenerated ASF solution.
So it provided a great potential as a biological material.
Kaplan, Science, 329 (2010) 528-531
Qin, Journal of Insect Science, 10 (2010) 1-6

In general numerical simulation, concrete is usually assumed to be a homogeneous material with homogenized material properties derived from standard concrete specimen tests.
Obviously the concrete material is heterogeneous, which causes the material behavior of concrete rather complicated.
The Mazars’ damage model[6] suggested a double-scalar model to evaluate the damage of materials that have unequal tensile and compressive strength.
Acknowledgements The present work is supported by the National Natural Science Foundation of China (Project No. 51078235) and The Hong Kong Polytechnic University Research Grant (Project No.
Hao, Mesoscale modelling and analysis of damage and fragmentation of concrete slab under contact detonation, International Journal of Impact Engineering. 36(2009) 1315-1326

Effect Dehydrants to Increasing Molecular Weight of Condensed Polylactic Acid YinMengyan1, a, YangRongjie2, b and LiDinghua3, c 1 No.5 Yard, Zhong Guan Cun South Street, Haidian District, Beijing, China 2 National engineering technology research center for flame retardant material, School of Materials, Beijing Institute of Technology, Haidian District, Beijing, China 3 National engineering technology research center for flame retardant material, School of Materials, Beijing Institute of Technology, Haidian District, Beijing, China aomumuxi@163.com, byrj@bit.edu.com, cdli@bit.edu.com Keywords: polylactic acid, direct melt polycondensation, dehydrant, magnesium, magnesium methoxide Abstract.
Experiment Materials.
New chemical materials, Vol 37 No 5(2009), p. 1 [2] Jiang JiaJing (2012): Study on Synthesis of poly (lactic acid).
Jiangsu University of Science and Technology, Jiangsu
CHINESE JOURNAL OF APPLIED CHEMISTRY, Vol. 11 No. 1