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Introduction With the rapid increase of sewage treatment capacity of china,the amount of sludge also simultaneously increased significantly,Annual production about more than 3500 ten thousand tonnes sludge moisture content 80%, which is produced by the country's 3451 sewage treatment plants.According to survey results show that sludge produced in China, 80% have not been properly treated,treatment and disposal of sewage sludge is a serious problem.This study used aerobic fermentation composting system, with straw as a leavening agent, visit the composting process variation of temperature, moisture, pH, organic matter, dissolved organic carbon, germination index and other parameters of germination index[1]. 1 Experimental materials, apparatus and methods 1.1 Materials The dewatered sludge, Selected Xuzhou Guozhen Water operation ltd, as compost material,Wheat straw and corn stalk was used as a conditioner. 1.2 Experimental apparatus The experiment uses a cylindrical forced ventilation
As these easily degradable organic matter is microbial synthesis of their own material and converted into CO2 and H2O,The content of DOC gradually decreased.
References [1]ZHANG Xue-ying,ZHANG Yu-feng,XU Yan-hua.Effects of various bulking agents on the sewage sludge composting by using forced aerating in still pile system,Journal of Nanjing University of Technology.2003,25（5）：68-72
[2]Agricultural Chemistry Specialty Committee of Soil Science Society of China.Soil and agricultural chemical analysis method,Beijing:Science press, 1983
[3]TIAN Yang,　LIU　Li-fen,　ZHANG　Xing-wen.Study of co-composting of sewage sludge and straw biomass,Journal of Dalian University of Technology.2003，43（6）．753-758

Table 1 Main sizes of LNG tank Inner diameter of outer tank/m 60 Rise of vault/m 8.46 Height of tank wall/m 42 depth of vault/m 0.5 Thickness of tank wall/m 0.8 Thickness of base floor/m 0.8-1.2 Height of top ring beam/m 1.91 Width of ring space/m 1.2 Width of top ring beam/m 0.85 Height of thermal protection angle/m 3.95 The materials and corresponding parameters of LNG tank bottom and wall are shown in table 2 and table 3 respectively.
Table 2 Materials and corresponding parameters of LNG tank bottom Number Material Thickness/mm thermal conductivity/(W/(m.K)) 1 Inner tank base with 9% Ni Steel 5 28.5 2 Concrete leveling layer 96 1.80 3 Two tank bottom with 9% Ni Steel 5 28.5 4 Concrete leveling layer 100 1.80 5 Linoleum 4 0.635 6 First floor foam glass brick 135 0.055 7 Linoleum 4 0.635 8 Second floor foam glass brick 135 0.055 9 Linoleum 4 0.635 10 Third floor foam glass brick 135 0.055 11 Linoleum 4 0.635 12 Concrete leveling layer 89 1.80 13 Outer tank base with 16MnDR 8 38.5 14 Concrete bottom cushion cap 850 1.80 Table 3 Materials and corresponding parameters of LNG tank wall Number Material Thickness/mm thermal conductivity/(W/(m.K)) 1 Inner tank wall with 9% Ni Steel 10-30 28.5 2 Resilient felt 280 0.053 3 Expanded perlite 750 0.053 4 Metal lining plate with 16MnDR 15 50.5 5 Pre-stressed concrete wall 950 1.80 Results and discussion The LNG tank is meshed by 430 elements and 743 nodes, in order to verify
Acknowledgments This research was supported by the national natural science foundation (51206075).
Soil freezing characteristics and temperature distribution in in-ground LNG storage tank, International Journal of Offshore and Polar Engineering, 22 (2012) p.53-62
Finite element analysis of wall temperature field and stress distribution of large LNG storage tank at high temperature, Journal of Tianjin University Science and Technology, 45 (2012) p.505-510

Kurzydłowski1,e 1 Warsaw University of Technology, Faculty of Materials Science and Engineering, Woloska 141, 02-507 Warsaw, Poland, www.materials.pl 2 Medical University of Warsaw, Departament of Biophysics and Human Physiology, Chałubińskiego 5, 02-004 Warsaw, Poland a jrysz@meil.pw.edu.pl, bmbil@meil.pw.edu.pl, cpwozniak@amwaw.edu.pl, d mszumiel@ib.amwaw.edu.pl, ekjk@inmat.pw.edu.pl Keywords: biocompatibility, polyurethane, morphology, catalyst Abstract.
Biological tests Human osteoblasts were used to investigate the biocompatibility of examined materials.
The cells were suspended in Dulbecco's Modified Eagle Medium (DMEM; Gibco), supplemented with 10% foetal bovine serum (FBS), L-glutamine, antibiotic-antimycotic mixture (Gibco), ß ascorbic acid and dexamethason and seeded at 75·10 3 cells/ml onto sterilized materials.
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The software—Deform-3D comes with no flow stress of 4Cr9Si2 alloy materials in its library.
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In the area materials processing instability would occur.
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Table 1 The paremeters of panel Part Material Diameter（mm） Thickness（mm） Rivets 2117-T4 5.8 / Skin 7055-T7751 / 4 Stringer 7055-T7651 / 3 The final deformation analyzed by our method (1000 silumation) is shown in fig 6, and the comparison of analysis and expriments result (4 times) is shown in table 2.
Acknowledgements We gratefully acknowledge the support of National Natural Science Foundation of China (51175433), Aeronautical Science Foundation of China (2010ZE53050) and Postdoctoral Science Foundation funded project of China (2011M501478).
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Sodium alginate can be used as a slow-release auxiliary material for its properties of becoming gel and forming film.
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Materials and Methods Materials and sample Preparation The raw materials used in the present study were supplied from the Company of Ceramics Tiles of Remichi, Algeria in powder form.
Other trace oxides (Mg, Na, Ti, etc.) have been detected in the chemical analysis of the raw materials.
Greil, Additive manufacturing of ceramic-based materials.
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