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In the latter case, the C/S ratio of this phase eventually declines as increasing amounts of Ca2+ are removed from the structure, thus resulting in a strength loss of the hardened cement paste.
Haxby, J.A Hearne, The Chemistry and Expansion of Limestone-Portland Cement Mortars Exposed to Sulphate-Containing Solutions NIREX Report NSS/R127, United Kingdom, (1988)

Zhuang1,e 1State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, China 2SINTEF Materials and Chemistry, Trondheim, Norway abaiql123@sina.com, bhxli@skl.ustb.edu.cn, cQiang.Du@sintef.no, dzhangjs@skl.ustb.edu.cn, elinzhongzhuang@yahoo.com Keywords: AA7xxx; direct-chill casting; constitutive behavior; numerical modeling; on-cooling test Abstract.
Introduction High-strength AA7xxx alloys such as AA7050 and AA7055 are extensively used as upper wing structure, keel beams and longerons due to their superior mechanical properties in the aerospace industry [1].

After the sintering procedure, the heterogeneities are likely to appear as matrices with different crystalline structures or chemical compositions in the microstructure.
Bergstrom, Colloidal Processing of Ceramics, John Wiley & Sons Ltd, Institute for Surface Chemistry, Stockholm, Sweden, 2001

That the hydrophilic oligomer diol is in the molecular chain of polyurethane is the structure characteristics of nonionic type waterborne polyurethane.
The research development of flame retardant J. progress in chemistry, polyamide fiber fabric 2001, (4): 25 – 28 [4] Zhou Xuejia, Hu squealing.

The mining of heavy metal mineral resources has greatly changed the original soil environmental structure and status [1, 2].
Soil Agricultural Chemistry Analysis.

Thickener properties and DS effected by the ratios of nNaOH/nAGU During the carboxymethylation process, sodium hydrate provides the alkaline environment for the reaction as well as serves as the swelling agent to facilitate diffusion and penetration of the etherifying agent to the starch granular structure[6].
[13] Jia Liu, Jian Ming, Weijin Li,et al: Food Chemistry,Vol 133 (2012),p.1196-1205.

There are mainly two types of Si3N4, α-Si3N4 and β-Si3N4 .α-Si3N4 is commonly used as a starting powder since α-Si3N4→β-Si3N4 phase transformation could form interlocking elongated grain structure, leading to high strength and toughness[9].
Tsao, Thermal conductivity of two-phase materials, Industrial & Engineering Chemistry. 53(1961) 395-397.

Denitrification process can also occur in well-structured soil[20].
[23] M S Smith, K Zimmerman: Soil Science Society of American Journal Vol. 45 (1981), p. 865 [24] R K Yao, Z J Yu, X W Xu, K S Shao, Z Li, X Y Tang: Environmental Chemistry Vol. 01 (1994), p. 22 (In Chinese) [25] P P Li, G L Zhang, J Zhao, J Yang, X L Lu, Y Ning, Z Wang: Periodical of Ocean University of China Vol. 04 (2009), p.805 (In Chinese) [26] C M Aelion, J N Shaw, M Wahl: Journal of Experimental Marine Biology and Ecology Vol. 213 (1997), p 31 [27] H Munoz, J M Morell, J E Corredor: Marine Pollution Bulletin Vol. 44 (2002), p 992 [28] J L Mentzer, R M Goodman, T C Balser: Plant and Soil Vol. 284 (2006), p. 85 [29] C C Song, L H Zhang, Y Y Wang, Z C Zhao: Environmental Science Vol. 27 (2006), p. 2369 (In Chinese) [30] L H Zhang, C C Song, D X Wang: Scientiae Circumstantiae Vol. 25 (2005), p. 1112 (In Chinese) [31] J P Kaye, S C Hart: Trends in Ecology and Evolution Vol. 12 (1997), p. 12 [32] Y C Li, C C Song, D Y Liu, L Wang: Research of Environmental Sciences Vol. 9 (2009

Metal Flow Conditions in Porthole Channels of Different Size Valberg, Henry1, a *, Nolte, Dirk2,b and Yawar Khan1,c 1Norwegian University of Science and Technology, Department of Engineering Design and Materials, Richard Birkelands v. 2b, 7491 Trondheim, Norway 2 SINTEF Materials and Chemistry, Department of Materials and Structural Mechanics, Richard Birkelands vei 3, 7465 Trondheim, Norway ahenry.valberg@ntnu.no, bdirk.nolte@sintef.no, cyawarabbas1302@hotmail.com Keywords: Porthole extrusion, metal flow through two portholes, flow velocity, location of extrusion seam weld, experimental metal flow, FEA-predicted metal flow, idealized 2D extrusion welding Abstract.
Xinwu, Numerical simulation and die structure optimization of an Al rectangular hollow pipe extrusion process, Materials Science and Engineering A, Vol. 435–436, 5 Nov. 2006, pp. 266–274

Introduction In the middle and late stage of oilfield water flooding, due to the long-term scouring of injected water, the pore structure, physical parameter, and percolation characteristic of reservoir would change to some extent.
Computers and applied chemistry, 2003, 20(2): 33-35.