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Magnesium recovery from desiliconization slag of nickel laterite ores by carbonization Wennning Mu1,a , Shuangzhi Shi2,b and Yuchun Zhai 1,a 1School of Resources and Materials, Northeastern University at Qinhuangdao Branch, Qinhuangdao 066004, China 2Qinhuangdao ShouGang Plate Co., Ltd, Qinhuangdao 066003, PR China adanae2007@163.com, bxinyue200@163.com Corresponding author: Wenning Mu, Tel: +86-335-8071038, E-mail: danae2007@163.com Keywords: Magnesium, Nickel laterite ores, Desiliconization slag, Carbonazation Abstract.
Experimental Materials.
Acknowledgement The authors gratefully acknowledge the project supported by National Natural Science Foundation of China (No.51204036, No.51234009) and the Research Fund for the Doctoral Program of Higher Education, China (No. 20110042120014).
Elias, AGSO Journal of Australian Geology and Geophysics 17 (1998) 81-88

The Influence of Mineralogical Composition Changes of Sandstone Cement on Physical-Mechanical Properties Katerina Kovarova1, a *, Zdenek Pala2,b 1Department of Geotechnics, Faculty of Civil Engineering, CTU in Prague, Thakurova 7, 166 29, Prague 6, Czech Republic 2Department of Solid State Engineering, Faculty of Nuclear Sciences and Physical Engineering, CTU in Prague, Trojanova 13, 120 00, Prague 2, Czech Republic akaterina.kovarova@fsv.cvut.cz, bzdenek.pala@fjfi.cvut.cz Keywords: sandstones, cement, weathering, physical-mechanical properties.
Subject and methods Experimental material and procedure Three types of cretaceous sandstone of Hořice, Božanov and Kocbeře, which have often been used in the Czech Republic as a building and sculpture material, were tested during this experiment.
Sandstone fine-grained binding material was separated according to the procedure described by Ip et al. [2].
Determination of physical-mechanical properties The assessment of basic physical-mechanical properties was done for the purposes of evaluation of studied material durability and rate of degradation.
Ray, Thermal characterization of the clay binder of heritage Sydney sandstones, Journal of Thermal Analysis and Calorimetry, 92 (1) (2008) 97-100

It can be divided into two styles: (i) Solo Lecture: Teachers use their legitimate power to control the class surroundings, which include the classroom behaviour, teaching materials, and the time schedule without agreement from the students.
The teacher consults with the students regarding teaching contents, discussion materials, and time schedules.
Pausch: Using animated 3D graphics to prepare novices for CS1, Computer Science Education, Vol.13 (2003), p.3
Havice: Attitudes toward computer-mediated distance training, Journal of Technology Studies, Vol.28 (2002), p.70

The material of landing stage is Q345.
The material of landing stage is welded together with Q345 steel plate.
Fig.3 Shell63 shell element model (3) Defining the material properties and real constant of landing stage.
The Q345 steel is selected to as the landing stage material.
References [1] XuBangzhen, JiangHua, Major cargo shiping stability calculation and adjustment, Journal of Dalian Maritime University, 2003,29(1):50~52 [2] WangYunhuang, Stability of small Angle the ship, World Shipping 1995(6):55~56 [3] G.C.

Beneficiation study on an oolitic hematite Jie Suna, Jinzhu Zhangb College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China asunjie510@163.com, bzjz-yjx@163.com Corresponding author E-mail address: zjz-yjx@163.com Keywords: Oolitic Hematite; Roasting; Magnetic Separation Abstract.
Acknowledgment The authors gratefully acknowledge the financial support provided by National Natural Science Foundation of China (51274074).
Vol. 8 (2008), P. 36 (In Chinese) [5] Chenghang Wang, Xiong Tong and Jipeng Sun: Metal Mine.Vol. 5 (2009), P. 57 (In Chinese) [6] Yongfu Yu and Chaoying Qi: Journal of Wuhan University of Technology-Mater.
Vol. 3 (2011), P.117 [7] Chao Guo, Wang Hui, Jiangang Fu and Kaida Chen: Advanced Materials Research. (2012) [8] Yongshi Jin, Tao Jiang, Yongbin Yang, et al: Central.

Introduction Selective laser sintering (SLS) using coated sand material as sintering molding material.
The main factors influencing the slective laser sintering parts precision: a)The effects of SLS system process equipment precision b)The influence of sintering temperature on the accuracy of the specimens c)The effect of laser scanning line of specimen d)Sintering thickness on the accuracy of specimen e)The effect of sintering material physical and chemical properties of specimens f)The buckling deformation in the process of sintering To solve the above factors that affect the precision of parts, the traditional control technology has not meet the requirements.
No preheating will increase the forming time, forming a low performance and precision of parts is poor, even it completely unable to sintering process; Preheat temperature is too low, warping deformation will occur parts and it will affect the forming process and accuracy; Preheating temperature is too high for post-processing of parts and material recycling, even it make the parts can't use.
(In Chinese) [3] Yuan Hongling :Rapid prototyping/rapid molding integrated manufacturing system of precision error: Hefei university of technology,(2005) [4] Wen XianShi, Yusheng, Huang Shuhuai, Mechanical science and technology,23(2004),p.235-237.
International Journal of Machine Tools & Manufacture.2002, 42:29-40

Though analysis, the specific calculation results and Consistency tests are as follows: Table.2 Index weigh table for object hierarchy A(quality supervision department) A B1 B2 B3 B4 weighted value CI RI CR B1 1 2 1/6 1/4 0.0845 4.2299 0.0766 0.8930 0.0858 B2 1/2 1 1/7 1/5 0.0552 B3 6 7 1 5 0.6312 B4 4 5 1/5 1 0.2291 Table.3 Index weigh table for object hierarchy A(detecting department) A B1 B2 B3 B4 weighted value CI RI CR B1 1 2 1/6 1/4 0.0876 4.1639 0.0546 0.8930 0.0612 B2 1/2 1 1/7 1/5 0.0570 B3 6 7 1 4 0.6067 B4 4 5 1/4 1 0.2487 Table.4 Index weigh table for object hierarchy A(quality assessment committee) A B1 B2 B3 B4 weighted value CI RI CR B1 1 1 1/6 1/4 0.0761 4.1226 0.0409 0.8930 0.0458 B2 1 1 1/6 1/4 0.0761 B3 6 6 1 4 0.6043 B4 4 4 1/4 1 0.2434 The test coefficient of judging matrix carried out by each department is CR＜0.1 which shows that judging matrix is in satisfactory consistency, so That is to say the weight of material property, the construction scheme, the
By the above method to bridge reinforcement quality assessment test scores as follows: Table.7 Bridge reinforcement quality test result Test project Test score Weight（%） Material propertiesB1 Concrete C1 86.4 1.36 8.01 Steels C2 89.1 6.29 Repair and protective materials C3 82.6 0.70 Construction scheme B2 Construction organization management C4 82.4 0.52 5.97 Construction technological process C5 89.8 4.70 Safety civilized construction and environmental protection C6 83.4 1.02 Construction quality B3 Concrete construction quality C7 92.5 30.13 58.57 Steel construction quality C8 90.4 30.96 Appearance quality B4 Size and appearanceC9 88.8 10.49 23.32 Surface appearanceC10 87.9 13.38 From the calculation method in chapter 1,, so the final comprehensive evaluation score as a whole is : Then the bridge reinforcement comprehensive evaluation of the quality inspection is qualified with the standard. 3.
Shandong university of science and technology，2006（In Chinese） [3] MA Ya-li，WANG Dong—wei，ZHANG Ai—lin.
Journal OF Beijing University of Technology, 2005，31(1)：36~41（In Chinese）

Journal of Materials Processing Technology. 2007,187-188: p.730-73 [4] Johnson W, Needham G.
Materials Science Forum Vols. 561-565 (2007) pp. 1875-1878 [6] Mamalis A G, Hawkyard J B, Johnson W.

Journal Citation (to be inserted by the publisher) Copyright by Trans Tech Publications * corresponding author Corona treated polydimethylsiloxane (PDMS) surfaces studied by the slow positron beam technique.
Division of Polymer Science, Department of Chemistry, University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa email: pemallon@sun.ac.za. 2.
Elastomers based on polydimethysiloxane (PDMS) are used as high voltage insulating materials in outdoor electrical power applications due to their low weight, good electrical properties and hydrophobic surface properties.
It has already been shown that the variable energy positron beam technique is highly effective in monitoring material changes in polymeric coatings caused by various artificial and natural weathering of the coatings [2].
We have also recently shown that the technique provides unique information on the material changes that occur in PDMS based compounds used in high voltage insulators when these compounds are treated with corona [3].

The rates of their disappearance, We and W⊕, will be specified below taking into account material balance equations.With these simplifications we may calculate the yield of radiolytic hydrogen, G(H2) = ke⊕ ∞∫ 0 n⊕ne V dt ≈ n0We⊕ We + W⊕, We⊕ = ke⊕n0 V , (8) yields of solvated electrons and products of the ion-molecule reaction, Ges = λe ∫ nedt ≈ n0 λe We, G_C6H11 = λ⊕ ∫ n⊕dt ≈ n0 λ⊕ W⊕, (9) as well as the Ps formation probability: PPs = kep ∞∫ 0 nenp Vp dt = 1 − np(∞) ≈ 1 − exp (−Wep We ) . (10) Now from two material balance equations for electrons and holes, n0 = GH2 + Ges, n0 = GH2 + G_C6H11 or 1 = We⊕ We + W⊕ + λe We, 1 = We⊕ We + W⊕ + λ⊕ W⊕, (11) we determine the rates We and W⊕: We = λe + We⊕ λe λe + λ⊕, W⊕ = λe + We⊕ λ⊕ λe + λ⊕, We + W⊕ = λe + λ⊕ + We⊕. (12) From equations (8), (10), (12) we obtain final expressions for the yields of H2 and Ps: G(H2) n0 = We⊕ We⊕ + λe + λ⊕, PPs = 1 − exp ( Wep λe + We⊕λe/(λe + λ⊕)) . (13) Proximity of ionization
Ito Materials Science Forum Volumes 175-178 (1995), p. 659 [5] Radiation Chemistry of hydrocarbons.
Journal of Radioanalytical and Nuclear Chemistry, Articles, 210(2) (1996), p. 371 [9] V.I.