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Porosity, is a measure of the pore sizes (air) space of a material or pile of materials within the compost mix.
Table 2, Initial analysis, of materials used in the study.
Table (7) Depicted the composted materials end products quality.
Journal of natural science research, vol. 7, No. 12.
Bioconversion of Waste Materials to Industrial Products.

Thus the selected process is very costly in terms of time and materials.
Typically, tightening tolerances means purchasing better-grade materials, components, or machinery, which increases cost.
Tarng: Journal of Materials Processing Technology, Vol. 74 (1998), p. 149
Tarng: Journal of Materials Processing Technology, Vol. 84 (1998), p. 122
Kudla: Journal of Materials Processing Technology, Vol. 109 (2001), p. 236.

There lies in the difference on the material of inner steel and size of hole diameter in the isolator.
In this figure, shear modulus of inner rubber in all models is 0.392MPa, the material of inner steel is Q345 and elastic-plastic property of steel material is considered.
Journal of Lanzhou University of Technology. 2007, Vol. 33(3):120-123.
Journal of Beijin University of Technology. 2006, Vol.32(3): 208-212.
Journal Of Guangzhou University(Natural Science Edition). 2002, Vol.1(6):51-56.

However, in the production process of injection products, injection molding and the materials of plastic parts determined only by optimizing the injection process parameters to improve the quality of plastic parts, how to optimize the injection process parameters is one of the research topic for many scholars.
The factors affected on the warpage of injection products are more complex, including forming machinery, injection process, mold structure and the materials of plastic parts.
Polymer Engineering and Science, 2001,41(5):703-710 [3]ZHAO Zhen-feng, HUANG Ming, SHEN Chang-yu est.
Chinese Journal of Computation Mechanics, 2006，23(5):540-545, in chinese
The use of Taguchi method in the design of plastic injection mould for reducing warpage[J].Journal of Materials Processing Technology, 2007, 182(2):418-426

Considering the higher reducibility of iron filing, the availability of raw materials and some characteristics of wastes reuse and “making them profitable”, at the same time, there are less researches of regression analysis on the restoration effect to the groundwater contamination both at home and abroad, this paper tried to study the treatment effect of iron filing, as PRB filling medium, on restoring groundwater with Cr contamination and made regression analysis about it.
Test materials and method Tester.
The reactor adopts PVC steel pipe with its diameter 8cm and height 50 cm; the quartz sand is chosen to make coarse sand with its grain size 28 mesh and thickness of its filling layer 6cm, which plays a role in filtering, buffering and protecting central infilling; the quartz sand is also for fine sand with its grain size 60 mesh and thickness of its filling layer 13cm, which plays a role in imitating water-bearing stratum to make water well-distribute in central active filling material; the iron filing is chosen as the filing medium layer with its mesh size 28 mesh and thickness of filling 12cm, which mainly removes the Cr6+ contents in the groundwater, and the analog equipment is shown in Figure 1.
Figure 1 The analog equipment for this test 1. inlet chest; 2. water stop valve; 3. floweter; 4. peristaltic pump; 5.reactor abutment; 6. coarse sand filling layer; 7. fine sand filling layer; 8. filling medium—iron filing; 9. sample connection; 10. outlet chest Test materials Iron filing .Experiment with iron filings from one machine factory workshop produce iron filings, components are shown in table 1.
References [1]B.Singh,G.S.Sekhon:Agriculture and Environment,Vol.4 (1979) No.3, p.207 [2]J.F.Power,J.S.Schepers:Ecosystems & Environment,Vol.26 (1989) No.3, p.165 [3]X.M.Zhui:Journal of Anhui Agricultural Sciences,Vol.40 (2012) No.7, p.4202(In Chinese) [4]Z.X.Chen,Y.Z.Huang,Z.Q,Zhao,et al:Journal of Safety and Environment,Vol.12 (2012) No.6, p.1(In Chinese) [5]X.M.Liu,H.Z.Zhang,J.P.Liu:Environmental Science and Technology,Vol.35 (2012) No.61, p.174(In Chinese) [6]Y.Li,Z.Q.zhang,M.Shao:Journal of agricultural machinery,Vol.43 (2010) No.9, p.96(In Chinese)

Renchang, Experiment of anchorage properties for epoxy resin coated undeformed bars(in Chinese), Journal of Shandong Institute of Building Materials, 1(1999)56
(in chinese) Journal of Yantai University.2(2016)135-139
Shekarchi, Effect of exposure temperature on chloride-binding capacity of cementing materials, Magazine of Concrete Research, 15(2015) 821-832
Wei-qun, Bond behavior between steel bar and recycled aggregate concrete after freeze–thaw cycles, Cold Regions Science and Technology, 118(2015)38–44
[17] H.DA, Steel corrosion in concrete:how does it occur, Materials Protection,6(1967)19-23.

Reaserch on measurement of residual stresses in flash-butt-weld rails using X-ray Diffraction Shaohua Yan1a, Hui Chen1b, Guoqing Gou1c, Da Li1d, Yan Liu1e , Zhongyin Zhu1f 1Institute of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China ayanshaohua6@163.com,bxnrpt@163.com,cgouguoqing1001@163.com dlida1982@126.com,eliuyanzt@163.com,f317293402@qq.com Keyword: Railway rails, Flash-butt weld, Electro-polishing, XRD, Residual stress Abstract: The residual stress, which is unavoidable in the process of flash-butt-weld rails, plays important roles in the service life of the railway rails.
In this paper, with the X-raydiffraction (XRD) technique, we measured the magnitude of the residual stresses in flash–butt -weld rails, which material is U71Mn ordinary carbon steel.
Table 1 Residual surface stress generated by grinding of steels mching technology material residual surface stresses(Mpa) grinding stainless steel -340 grinding AISI1045 -300 grinding AISI4340 -380 Experiment Material The material of this experiment is U71Mn railway rails.
Acknowledgement The authors are grateful to the projects in the National Science and Technology Pillar Program during the Eleventh Five-Year Period(Grant No.2009BAG12A04-B03) References [1] A Skyttebol , B.L.
Effect of residual surface stress on the fatigue behavior of a low-alloy powder metallurgy steel[J], International Journal of Fatigue 29 (2007) 1978–1984; [10]Yuuji Shimatani,Kazuaki Shiozawa,Takehiro Nakada,Takashi Yoshimoto, Liantao Lu , The effect of the residual stresses generated by surface finishing methods on the very high cycle fatigue behavior of matrix HSS ,International Journal of Fatigue 33 (2011) 122–131; [11] Ghanem F, Braham C, Fitzpatrick ME, Sidhom H.

Introduction Tellurite based glasses have been known an interesting optical materials, presented by their excellent physical and optical properties such as good thermal stability, corrosive resistance, an active rare-earth solubilty medium, large infrared transparency and refractive indices both linear and non-linear characteristics [1].
Experimental Glass samples of composition 85TeO2-10TiO2-(5-x)Bi2O3-x(Er2O3), x=0, 0.2, 0.5, 1.5 were prepared via melt-quenching method using TeO2, TiO2, Bi2O3, and Er2O3 powders as starting materials ((99.99% purity, from Sigma Aldrich).
SPIE, 9728 (2016) 97280U [7] Mustafa, I.S., Kamari, H.M., Yusoff, W.M.D.W., Aziz, S.A. and Rahman, A.A., Structural and optical properties of lead-boro-tellurrite glasses induced by gamma-ray, International Journal of Molecular Sciences 14(2) (2013) 3201-3214 [8] Sreenivasulu, V., Upender, G., Priya, V.V., Mouli, V.C. and Prasad, M.
Davis, Electronic Processes in Non-crystalline Materials, 2nd ed.
Moadhen, Yb 3+ effect on the spectroscopic properties of Er–Yb codoped SnO2 thin films, Journal of Luminescence 131(12) (2011) 2630-2635

To investigate the effects of processing parameters and glass fiber content on the specimen material distribution, the commercial software package, Plastics, has been utilized in order to predict the flow behavior and thickness fraction of the material in injection molding process.
The material properties used for computer simulation of material distribution in molding and for predicting of 3-D fiber orientation distribution in injection moldings was Ultra Tough material B4300G6, an easy flowing injection molding PBT with 30% glass fiber reinforcement for rigid, tough, and dimensionally stable parts.
Polymer Engineering and Science. (2004)
Mennig, Investigation on weld line strength of short-glass fiber reinforced polycarbonate manufactured through push-pull-processing technique, Journal of Reinforced Plastics and Composites, 25(4): (2006) 421-435
Xuan-Phuong Dang, Hong-Seok Park, Design of U-shape Milled Groove Conformal Cooling Channels for Plastic Injection Mold, International Journal of Precision Engineering and Manufacturing, 12(1), 73-84, DOI 10.1007/s12541-011-0009-8.

Materials and Methods Raw water.
Material.
Biochemical Engineering Journal. 2008, 39(1):215-220 [3] E.
Environment Science & Technology. 2007,37:41-127 [8] Y.
Journal of Hazardous Materials. 2010, 177:676-682 [10] Li L, Quinlivan P.