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Pyroelectric materials have been used in the conversion of thermal energy to electric energy.
The responses were proportional to the temperature variation rate in the PZT pyroelectric materials.
Taroni: IEEE Sensor Journal Vol. 3 (2003), p. 212 [5] E.
Nitsche: Journal of Applied Physics Vol. 37 (1966), p. 510 [6] A.
Chang: Sensors and Materials Vol. 22 (2010), p. 417 [10] V.

From the point of view of the environmental load, these materials should not contain toxic, hazardous and volatile components.
Materials and Methods Minimization of heat losses through the building envelope is determined by the following factors.
Vaitkus, Confidence intervals forecasting creep deformation of foam polystyrene, Construction Materials. 12 (2012) 40-44
Assarar, Experimental analysis of mechanical behavior and damage development mechanisms of PVC foams in static tests, Materials Science (Medžiagotyra), 10(1) (2004) 34–39
Bobrova, Building systems and features of the use of thermal insulation materials, Zhilishchnoe stroitel'stvo, Moscow: OOO RIF, 7 (2015) 49–52

Introduction High-temperature application range of advanced ceramic materials (ZrO2, SiC, Si3N4) depends in a great measure upon the possibility of fabricating tight and mechanically strong joints between these ceramic materials and metals, and between the ceramic materials themselves.
Materials based on intermetallic compounds of nickel and iron with aluminium show unique mechanical properties as well as highstability at elevated temperatures.
Materials and Technology The materials used in the experiments was zirconium ceramic stabilised with 3% of Y2O3 (fabricated at the Institute of Technology of Electronic Materials).
Qin, B.Derby: Journal of Materials Science 28(1993), p. 4366-4374 [5] J.Mei, P.Xiao: Scripta Materialia.
Morsi: Materials Science and Engineering A299 (2001), p. 1-15 [7] K.Matsuura, T.Kitamutra, M.Kudoh: Journal of Materials Processing Technology 63 (1997), p. 293-302

Wang: International Journal of Mechanical Sciences, Vol. 49 (2007), pp. 306-316
Wang: Journal of Materials Processing Technology, Vol. 209 (2009), pp. 2314-2320
Guo: Journal of Materials Processing Technology, Vol. 121 (2002), pp. 390-394
Wang: Journal of Materials Processing Technology, Vol. 209 (2009), pp. 4573-4577
Papini: Journal of Materials Processing Technology, Vol. 190 (2007), pp. 51-60

China 3College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 265510, P.
In the CS theory, the potential energy density depends on both the strain and rotation gradient so as to introduce the characteristic length quantity relating to the micro-structures of materials.
For linear elastic center-symmetric isotropic materials, the potential energy density is defined as [2]:
(3) Whereandare Lame constants, l is the characteristic length relating to the micro-structure of materials, is the usual strain tensor, and is the curvature tensor defined as: ;()
Fleck: International Journal for Numerical Method in Engineering Vol. 44 (1999), pp. 373-391

The research results provided an alternative method for the aluminum alloy material structure impact localization.
However, material shapes differences and experiment environment interference lead to the signal propagation velocity still has uncertainty.
Sun: Journal of Nanjing University of Aeronautics & Astronautics Vol.43(2011),p. 191-197
Mathews: Acoustic emission (Gordon and Breach Science Publishers Inc, New York 1983)
Chen: Chinese Journal of Quantum Electronics Vol.30(2013), p.608-614.

Guo, Basic properties of sintering dust from iron and steel plant and potassium recovery, Journal of Environmental Sciences, 25 (2013) 1226-1234
Mann, Morphosynthesis of calcium carbonate (vaterite) microsponges, Advanced Materials, 11 (1999) 324-328
Knoll and W.Tremeli, Emplated growth of calcite, vaterite and aragonite crystals onself-assembled monolayers of substituted alkylthiols on gold, Journal of Materials Chemistry, 8 (1998) 641-650
Liu, Effect of experiment parameters on the crystalline habit of calcium carbonare whisker, Journal of Inorganic Materials, 17 (2002) 163-166
Zhou, Preparation of calcium carbonate whiskers by sol-gel method, Materials Science and Engineering of Powder Metallurgy, 14 (2009) 164-168

Construction and Building Materials, 23 (2009) 669–674
Construction and Building Materials 27 (2012) 218–222
Construction and Building Materials 127 (2016) 43–48
Journal of Radiation Research and Applied Sciences 9 (2016) 386 - 391
Materials and Structures, vol. 27, 1994, p.596-605

Acoustic emissions are stress waves produced by sudden movement in stressed materials.
References [1] Sinke J.: Journal of Material Science, Vol. 41(2006), p. 6777 [2] Adrian A.
Dental Materials.
Janssen: Composite Science and Technology.
Vol. 55 (1995), p. 405 [6] Olivier SIRON, Hiroshi TSUDA.: Carbon Fiber-Reinforced Plastic Materials.

However, these indices are not robust enough to detect steel framed roof due to the diversity of impervious materials.
However, it belongs to warming material for urban thermal environment from the perspective of urban heat island (UHI), and that has stronger warming ability than other traditional roofing materials.
Steel framed roof, as one kind of more and more popular impervious material, is playing an important role in urban thermal environment.
Journal of Anhui Normal University (Natural Science).
Geomatics and Information Science of Wuhan University.