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Recycling product inventory refers to material inventory  used to reprocessing,which comes from the recycled materials after the proprecessing of splitting, cleaning , inspection and testing.
t1 t2 t3 t4 T recovered materials inventory finished products inventory Fig. 2 Variation of recovered materials inventory and finished products inventory Assumptions.In order to facilitate discussion, we make the following assumptions on the system：When the cycle are rather short, the main factors affecting market  demand is relatively stable,  so suppose marketable products market demand rate in different stage is certain.
After a preliminary classification, detection, dismantling, recycling materials are put in recovered products inventory.At the end of the cycle, they will be deal with at a one-time.
Recycling materials can be repaired to be salable and will be put in new products inventory.
References [1] Xiuqin Xia, Daoping Wang: submitted to Journal of Beijing Jiaotong University(Social Sciences Edition) (2011) In Chinese [2] Haolin Tong: submitted to Henan Normal University（2010）In Chinese [3] Nan Wang, Yan Wang, Yan Zhang: submitted to Journal of Shenyang University（2011）In Chinese [4] Qingli DA,Zuqing Huang: submitted to Journal of Southeast university（2005）In Chinese [5] Beilin Liu,Na Chen: submitted to Journal of Harbin University of Commerce（2006）In Chinese [6] Iner Klebera, Stefan Mirinera, Gudrun kiesmullerb: submitted to International journal of Production economics（2002）

Based on 15 inches high air pressure drill abroad subject material samples of the physical and chemical analysis, learn foreign drill bit materials such steel grade in the United States 4330 mod, namely the super pure high strength steel.
With domestic special steel factory research and many experiments, we developed the high strength steel with ultrapure smelting technology 20CrMnSiNi2MoA materials.
4330 mod materials, development of new materials on the resistance to overload ability is better than that of similar foreign products materials; And new material percentage elongation, reduction of area, impact value is low, show the development of new materials in some poor ability to resist crack instability expansion, therefore, we to material smelting, forging, heat treatment process was put forward strict requirements, the main measures mainly has: (1) Product size each transition cross section must be rounded; (2) Within the overall machining precision up to 3.2; (3) The surface and inner hole are all shot blast; (4) Refinement of grain size and take the second normalizing treatment; (5) Four inspection check: namely raw materials the factory inspection to check; After rough turning inspection check; Heat treatment testing inspections; Finishing inspection check.
References [1] Zhu Xiaohua,Ling Yume and Tong Hu:   Journal of Central South University(Science and Technology) .
[5] Pan Guangyong: Science & Technology Information.

Information era, information, together with the material and energy, already are called three greatest resources of modern society.
It will provide the science leading for the information management practice, also the technique, method guide provided to information system construction and management for all levels sports organization.
As a science of basic regulation, principle and application method, SIM, a crossed, synthetic, plied science, is based on the development of informatics, management science and IT, also, other science, such as information science, librarianship, archives and documents provide it with the technique and methods.
College sports information users need to understand the information development of physical education at home and abroad in the training objectives, curriculum, teaching arrangements and so on, according to assume the task of teaching and research, the main need for teaching materials, teaching methods and research in the field of information, the information needs have social and cutting-edge features.
Limin, On library Knowledge Service, Journal of Liaoning Institute of Technology On Social Science, vol. 7, Jun. 2005, pp. 1 10-1 12 [2] Z.

Based on the high turbidity feature of mine water, Glutinous Rice Starch(St)- Acrylamide(AM) graft polymer cationic flocculant was synthesised by copolymerization with St and AM as materials, ammonium persulfate and sodium hydrogen sulfite as the initiator, 2.3-glycigyl trimethyl ammonium chloride were used as cationic agent.
Starch modified flocculant becomes more and more popular for its selective, abundance in raw materials, low prices and non-toxic.
Experiment Instrument. main instruments were listed in table 1 Table 1 Main Instruments Instruments Type Manufacturer Electric mixer JB90-D Model factory of Shanghai Water bath SSY-H Instrument factory of Shanghai Electronic balance FAl004 Fine instrument factory of Shanghai Spectrophotometer 721 Technology company of Shanghai Drum wind drying machine DHG-9030A Instrument plant of Hongshan Spin chip vacuum pump TW-1A Instruments company of Shanghai Magnetic blender HJ-6 Experiment equipment company of Shanghai Nitrogen cylinder City saled Materials. main materials were listed in table 2 Table 2 Main Materials Materials Standard Manufacturer Glutinous Rice Starch Industrial grade City saled Acrylamide Analytically pure Chemical reagent company of Tianjin Ammonium persulfate Analytically pure Chemical reagent manufacturing company of Tianjin Sodium hydrogen sulfite Analytically pure Limited liability company of Tianjin Ethylalcohol Analytically pure Integrated management
Forum Vol. 29-31(2006), p. 5 [3] Hua Wu: submitted to Journal of Natural Sciences (1998) [4] Wenyao Yao, Shu Ming: submitted to Journal of Petrochemical (2001) [5] Ling Guo.
Zhihao Jin: submitted to Journal of Shanxi Normal University(2003) [6] Yin Hua, Peng Hui, Huixuan Liu: submitted to Journal of Environmental Science and Technology(2000) [7] With this plant, Shufen Zhang, Jinzong Yang: submitted to Journal of Applied Chemistry(2001) [8]Chouyyok W, Panpranot J, Thanachayanant C, et al.

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Raw Materials and Concrete Gradations Identifying aggregates, mastic and voids exactly is the foundation for 3D reconstruction of asphalt concrete.
It is mainly used to be a waterproof roof, wall filler and mortar as building materials.
Journal of Materials in Civil Engineering, 22(8):820-825, 2010
International Journal of Pavements, 1(3): 22-33, 2002
Journal of Huazhong University of Science and Technology(Nature Science Edition),37(6):56-59.

Base on manufacturing technology, biological manufacturing technology is an interdiscipline [4] which integrated life sciences, materials science and information technology and so on.
Finally, it evolved into utilizing semiconductor materials to produce vibration pulse wave.
But the research is so poor [17] in these fields, such as the relationship of cells and scaffold materials, the affection of cells on the degradation of materials, the affection of materials on stem cells differentiation and the formation of the organization and so on.
PGA, PLA, PLGA are synthetic materials.
The research progress of the materials of cartilage tissue engineering scaffolds[J].

Experimental Details Materials.
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Initial AM techniques involved the use of polymeric materials and were utilized to fabricate prototypes.
The mechanical properties of most materials degrade rapidly as the density decreases.
Onda, “Mechanism for Deformation of Wood as a Honeycomb Structure I: Effect of Anatomy on the Initial Deformation Process,” Journal of Wood Science.
Huang, et al., "Compressive Behavior of Luffa Sponge Material at High Strain Rate," Key Engineering Materials, Vols. 535–536 (2013), pp., 465–468
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