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Wang 1 1 Department of Materials Science and Engineering, Northeastern University at Qinhuangdao Branch, Qinhuangdao 066004, P.
China 2 Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China a xmhan@mail.neuq.edu.cn Keywords: Phosphors; Y2SiWO8:Dy 3+; Luminescence properties Abstract.
As a representative example, CaWO4 with the scheelite structure, a buildup of Ca2+ and WO42 groups with the coordination number of eight for Ca2+ and four for W 6+ [2-4], is considered to be highly functional materials due to its intriguing luminescent properties [5-7].
Grabmaier: Luminescent Materials (Springer-Verlag, Berlin Heidelberg 1994) [3] M.
Li, et al.: JOURNAL OF RARE EARTHS Vol. 24 (2006), p. 108 Fig.2 the excitation and emission spectra for Y1.9Dy0.1SiWO8 powder samples annealed at 1000°C Fig.3 Decay curve for the luminescence of Dy 3+ (4F9/2-6H13/2) in the Y2SiWO8 powder samples annealed at 1000°C Fig.4 The emission intensity and lifetimes of Dy 3+ as a function of x in Y2(1-x) Dy2xSiWO8 phosphors

Fluidity and Microstructures Characteristics of AZ 91D by using New Type Semi-solid Injection Process Rudi S.Rachmat1,a , Takuya Tamura 1,b and Kenji Miwa1,c 1 Solidification process, Material Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology (AIST), Japan, 2266-98,Anagahora, Shimoshidami, Moriyama-ku, Nagoya 463-8560 Japan arudi-s-rachmat@aist.go.jp, btakuya-tamura@aist.go.jp, c k-miwa@aist.go.jp Keywords: fluidity, microstructure, solid particles, fraction solid, injection process.
Therefore, the yield of materials for product is low.
Kojima: High Temperature Strength of Semi-solid Formed Mg-Zn-Al-Ca Alloys, Materials Science Forum YR���350-351 (2000), pp. 79-84 [2] Kenji Miwa, Rudi S.
Rachmat, Takuya Tamura: Relationship Between Volume Fraction Solid and Casting Defects on semi-solid Injection in AZ 91 D Magnesium Alloy, Journal of Japan Foundry Engineering Society, in printing, (2006) [3] Rudi S.
Hryn, TMS (The Mineral, Metals and Material Society, 2001), pp. 37-41

Development and utilization of resources can promote smooth development of eco –sports by providing with material foundation and spiritual impetus.
Existing a long time in civil society, there are diverse types of folk custom athletic games and recreation activities which are excellent materials of sports activities, according to the perspective of eco-sports.
References [1] Yuening Deng.The Construction of Sports Ecology, Journal of Physical Education, 9/2002, (6) P5-7
Hubei sports science and technology, 2007,26(4): p.412-413
[7] Huizeng Li, Aiming Gao.Rational thoughts on the new countryside development of ecological Sports, Journal of Hebei Normal University of science and technology, 2007, 6(1): p.103-106.

This leads to the low production efficiency, high process cost, and sometimes the processing technology is hard to achieve for difficult-to-machine materials[1,2,3].
Science Press,1987
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Fu, CO2 fixation using MEA and CaCl2 aqueous solutions, Applied Mechanics and Materials 541 - 542 (2014) 130-133
Mullin, Precipitation of calcium carbonate, Journal of crystal growth 60 (1982) 239-250
Ben amor, Effect og Mg2+, Ca2+ and SO42- ion on precipitation kinetics and microstructure of aragonite, Annales de Chimie Science des Materiaux 33 (2008) 123-134
Feng, Bioactivity of nitric acid and calcium chloride treated carbon-fibers reinforced polyetheretherketone for dental implant, Journal of the Mechanical Behavior of Biomedical Materials (2020) 103497-103524
Yamamoto, Effect of temperature on precipitation rate of calcium carbonate produced through microbial metabolic process of bio materials, Civil Engineering Dimension 18 (2016) 103-108

The types of primary main dam and other four auxiliary dams are all rolled earth dams while the dam materials are loessal clay loam and loam, respectively.
The composition of prisms and layers are coarse-grained materials corresponding to the Mohr-Columb Elastic-Plastic Model.
Journal of Northwest Sci-Tech University of Agriculture and Forestry (Natural Science Edition), 2004, 32(11).
Journal of Hydraulic Engineering, 2000, (2).
Journal of Tsinghua University (Science and Technology), 2000(S1).

Methods and materials The image analysis digital measurement process usually takes several steps and operations in order to provide a proper output.
Journal of Transcluction Technology, 2005, 4.
Seed Science and Technology, 2007, 35.
Journal of Agricultural Engineering Research, 1999, 73.
Journal of cereal science, 1999, 30.

Smear a small amount of foam mixture on the slide to test the cohesion strength of foaming materials.
Fig. 4 shows the SEM morphologies of foam materials.
Functional materials. 44(2013) 922-925
Journal of Analytical and Applied Pyrolysis. 100(2013) 103-110
[7] LU Zixing, Li Huaixiang, Polyurethane foam cell structure characteristic, J.Polymer Materials Science and Engineering. 11 (1995) 86-91

Triethanolamine (TEA) is a typical chemical admixture used in the construction materials.
Mechanistic investigations of TEA in cementitious materials have been carried out for several decades [4].
Experimental Methods Raw materials.
The dosage of TEA was 0.01%~0.10% by weight of total cementitious materials.
Pourchet, Why TIPA leads to an increase in the mechanical properties of mortars whereas TEA does not, ACI Materials Journal 217 (2003) 583-594

Introduction Efficient use of materials and ideal global behavior have made cable-stayed bridges the most advantageous and economical long-span bridge solution across the navigable rivers where navigation requirements have dictated the dimensions of the spans and clearance above the main water level.
Therefore, tight quality monitoring control of materials as well as more accurate calculation method progress is of great importance for both design reality and further reliability assessment of cable-stayed bridges.
Journal of Structural Engineering, 1992; 118(4): 1106-1120
Journal of Structural Engineering, 1997, 123(3): 305-312
China Civil Engineering Journal, 2013, 46(5):31-38.