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Other related materials such as amorphous organic thin film 8-hydroxyquinoline zinc [9] with the switching properties, 8-hydroxyquinoline and ferrous load MCM-41 catalyst [10] achieved good catalytic results. 8 - hydroxyquinoline metal complexes in the friction is still not reported.
The reason is: the characteristics of the rare earth elements the 4f electronic structure, as exo electron acceptor, while the occurrence of friction between the particles of the metal and rare earth organic salts of the friction surface chemical reaction, rare earth friction generated in the friction surface diffusion layer, protective metal materials , to improve the hardness of the metal friction pair materials, and rare earth elements in the friction interface penetrate to the steel substrate to change the surface crack propagation resistance and surface stress, wear resistance enhanced.
Acknowledgements This work was financially supported by the Guangdong Natural Science Foundation (04205301).
Journal of the Chinese Rare Earth Society,1998，16(4)：358.
Chemical Research and Application,Vol.1( 2001),p560 (inChinese) [8] Sugiyama K，Yoshimura D，Miyamac T．Appl Phys Lett，Vol.83(1998)，p4928 [9] JunPeng Shi,ZhenChao Wen, ChangAn Song et al. , Journal of Semiconductors ,Vol.26 (2005), p1979 (in Chinese) [10] Chi-biao Liu, Yong-kui Shan，Xiang-guang Yang ，et a1．Journal of Catalysis，Vol.168 (1997)，p.35

Experimental Research on the Change Rule of Frequency of Shale Ceramsite Reinforced Concrete Beam with Damage Weijun Yang1, a, Qiu Kong1, b, Zhouping Yu1, c, Yichun Ren1, d 1Changsha University of Science &Technology, Changsha, Hunan, 410114, China a mgbyrh@163.com , bbnntokq@hotmail.com, c 359458668@qq.com , d 83468487@qq.com Key words: shale ceramic concrete; frequency; damage; experiment Abstract：Taking vibration test on 7 shale ceramsite concrete beams and a reinforced concrete beam, collecting the dynamic signals, and modal analyzing it, this paper studies the ceramsite diameter /strength and the injury at all stages impact on the frequency so as to guide the design and construction of shale ceramsite reinforced concrete structures and components.
The reinforcement, section size, span length and clear span of specimens is shown in Fig.1, the design parameters and materials strength of specimens is shown in Table.1 Figure 1 Test beam reinforcement Table1 Properties of concrete material Specimn number Sectional dimension Coarse aggregate size Cylinder compressive strength (MPa) tensile reinforcement Compression Reinforcement Concrete Cubic Anti-pressure ( MPa) LC-1 100×204×2204 5～16 4.490 214 210 32.13 LC-2 100×205×2200 16～19 4.146 214 210 26.31 LC-3 102×205×2200 19～26 3.644 214 210 20.98 LC-4 100×203×2200 5～16 3.533 214 210 25.20 LC-5 102×206×2200 16～19 2.748 214 210 17.62 LC-6 101×202×2198 5～26 3.332 214 210 23.29 LC-7 103×202×2197 16～26 3.973 214 210 21.00 L-8 101×203×2198 5～19 -- 214 210 35.40 Test Method.
References [1] Yang, Weijun; Yang, Yongda; Yang, Yi.Experimental study on frost resistance of the shale ceramsite concrete .Applied Mechanics and Materials, v 117-119, p 1754-1758, 2012, [2] Yang, Weijun; Wang, Peng.Experimental research on compressive strength-size effect of ceramisite concrete.
Advanced Materials Research, v 382, p 361-367, 2012, [3] P.Cawley,R.D.Adams.The location of defects in structure from Measurements of natural frequencies [J].Journal of Strain Analysis，1979,14(2)：49～57 [4] YNarkis.Identification of crack location in vibrating simplysupported beams [J].Journal of Sound and Vibration, 1994,172(4)：549～558 [5] Stubbs N.Global Non-destructive Damage Evaluation in Solids[J].International Journal of Analytical and Experimental Modal Analysis, 1990,5(2)：67～79 [6] Wu X.Use of Neural Networks in Detectionof Structural Damage[J].Computers and Structures,1992,42(4)：649～659 [7] G.Hearn,R.B.Testa.Modal analysis for damage detection in structures.Journal of Structural Engineering.ASCE,1991,117(10)： 3042～3063

There are some factors that not only affect the extracted compounds from plant materials but antioxidant activity as well.
Besides that, solvent used is one of the important factors to extract antioxidant compound in plant materials due to the different antioxidant potential of compound with different polarity.
FRAP assay still can be used for assessment of antioxidant activity in plants materials as humans only absorb limited amount of gluthathione [15].
The Malaysian Journal of Analytical Sciences, 2007,Vol. 11 :269-273
European Journal of Scientific Research, 2009, 28: 471–477

Introduction The discrete manufacturing process is defined as the process that materials move by a certain process discretely, allowing intermittent links; modalities and properties of materials are continuously changed in this process; products are formed finally.
Therefore, this paper takes the automotive transmission as an example; it analyzes the characteristics of formation process of the quality information of discrete manufacturing products; puts forward the modeling method for the quality information formation process of discrete manufacturing products based on Petri net and discusses the specific steps and methods to identify and analyze the potential problems through the model of the formation process of the quality information of discrete manufacturing products. 1 Discrete Manufacturing Product Quality Formation Process Characteristic Analysis The main characteristic of discrete manufacturing process is to process raw materials into products that meet the requirements by a predefined process within limited time.
It involves the various organizations and production processes of the product life cycle and includes two main flow processes: one is the material flow process which consists of raw material processing, heat treatment, assembly and so on; the other is the information flow process which consists of product quality information collection, preservation, transmission and so on; the quality tracing of the discrete manufacturing product is to make full use of information technology and data collection methods to reversely trace the material flow and information flow of discrete manufacturing production process based on the corresponding relation between material flow and information flow, as shown in Fig.1.
[8] Hu Chunhua,Wu Bo, Liu Qi,Yang Shuzi.Multi Autonomous Agent Based Manufacturing System Integration[J].Journal of Huazhong University of Science and Technology,1996(09):26-28
[10] Zheng Beirong,Xie Nan,Xue Wei,Xie Xiaowen.Quality Management Process Modeling of Manufacturing System Based on Petri Nets[J].Journal of Jiangsu University(Natural Science Edition), vol.5,no.31, pp:581-585.2010.

The mechanical properties of materials deteriorate at the high temperature of the fire, and the structure can be damaged easily, so the damage cumulative impact must be considered in the structural resistance capability to fire.
Introduction Reinforced concrete structure or member is the subject of construction engineering, it will not burn in the process of fire; however, the high temperature in fire has significant influence on the materials’ performance, especially the mechanical properties [1].
Fire Safety Journal.40(2005)669-686
Sichuan Building Science. 33 (2007) 130-133
Harmathy, Thermal properties of concrete at elevated temperatures, ASTM J. of Materials. s1 (1970) 47-74.

In this paper, we adopt the separate model in which nodes are shared between reinforcing bars and concrete without considering the slip between two materials.
Blast load will cause the high strain rate of material.
Acknowledgements This work was supported by Science Fund for Creative Research Group of the National Natural Science Foundation of China (No.51021001).
International Journal of Impact Engineering, 2005, 31(1): 85~111 [7]Muszynski L C, Purcell M R.
ASCE: Journal of Composite for Construetion.2003, 7(2):93~97 [8]Structures to Resist the Effects of Accidental Explosions, TM-5-1300, U.

The elastic moduli of viscoelastic materials are complex modulus which are strongly frequency f dependent, the elastic modulus of 913C-TS are E'(f)=0.0041+0.0322log(f), E"(f)=−0.0077+0.0433log(f).
Cheng: Chinese Space Science and Technology, (2011) No.2, p. 32 [2] S.
Berthelot: Journal of Composite Materials, Vol. 40 (2006) No.21, p. 1889 [4] G.M.
Sefrani: Journal of Composite Materials, Vol. 40 (2006) No.21, p. 1911 [5] A.L.
Catapano: 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference (Boston, Massachusetts, April 8-11, 2013) [8] H.

This means that they are renewable materials, which are biodegradable and therefore can be easily recycled.
These problems can be avoided by using pulp or paper fibers for reinforcing thermoplastic matrix materials.
Materials and Methods All composites were fabricated with polypropylene (PP) HD 120 MO as a matrix polymer.
Nourbakhsh, Characteristics of wood-fiber plastic composites made of recycled materials, Waste management (New York, N.Y.) 29 (2009) 1291–1295
Son, Physico-mechanical Properties of Paper Sludge-Thermoplastic Polymer Composites, Journal of Thermoplastic Composite Materials 17 (2004) 509–522

Technological properties of researched materials allow obtaining dense strength fire-resistant materials.
Crystallization behavior in the materials is quite uniform.
It’s well known that burden materials containing minimal amount of calcium and aluminum oxides are selected for synthesis of forsterite-based refractory materials.
Materials Science Forum. 946 (2019) 401-405
Zemlyanoy et al, Recycling of technogenic wastes from the production of high-carbon ferrochrome for refractory materials, Journal of International Scientific Publications «Materials, Methods & Technologies». 6(3) (2012) 154-164.

The research conducted by the US Environmental Protection Agency reveals that recycling scrap can lead to an enormous 75% savings in energy and 90% savings in raw materials used.
This idea of preheating can also be applied to various fields such as glass making to preheat the raw materials and can serve the purpose of saving nonrenewable energy by adapting to renewable means for a sustainable future.
REFERENCES [1] Bill Nye The Science Guy, "BNSG 133, Sun."
GSTF Journal of Engineering Technology, vol. 2, 2013
Liley, “Thermal Conductivity of Elements: A Comprehensive review,” Journal of Physical and Chemical Reference Data, Volume 3, pp. 242,366, 1974