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Values of dielectric constants (at 100 MHz) for common materials is shown in Table 1 [12].
High frequency electromagnetic wave attenuates during the propagation in geological materials.
Kadioglu: Journal of Archaeological Science, Vol. 40 (2013), p. 3569-3583
Kipnis: Journal of Archaeological Science, Vol. 37 (2010), p. 1141-1148
Zhang: International Journal of Rock Mechanics & Mining Sciences.

Nano- and new materials technology are strong research and product development targets, and new applications and solutions arise all the time.
The ongoing trend for miniaturization of different devices and improvement of property of materials require improvements in technology.
Many such tasks are solved by means of nano-technology and nano-materials.
Faster computers, advanced pharmaceuticals, controlled drug delivery, biocompatible materials, nerve and tissue repair, surface coatings, better skin care and protection, catalysts, sensors, telecommunications, magnetic materials and devices – to name but a few of the areas where nanotechnology will have a major impact.
Sophisticated materials and materials systems with novel properties and unheard of performance will have to be conceived and designed in the decades to come.

Isomerization rosin and ethanolamine were used as raw materials, 95% ethanol as recrystallization solvent, the effects of reaction temperature, reaction time, agitating velocity, ultrasound intensity and recrystallization times on the purity and yield of abietic acid were investigated.
Fig. 1 The chemical structure of abietic acid Materials and methods Materials.
Acknowledgements The authors gratefully acknowledge financial support for this research from the National Natural Science Foundation of China (20976031, 3106012), the Natural Science Foundation of Guangxi Autonomous Region (2011 GXNSFD018011, 2013GXNSFAA019050, 2013GXNSFBA019037), scientific and technological project of Guangxi (1099060-2) and Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology (2012Z02).
Larsen, et al., Potential ambergris odorants from abietic acid, Australian Journal of Chemistry. 43(1990)21-46
Agudelo, et al., Synthesis and biological evaluation of abietic acid derivatives, European Journal of Medicinal Chemistry. 44(2009)2468-2472

Journal of Materials Science. 47-2 (2012) pp. 583-598
Encyclopedia of Materials - Science and Technology, Volumes 1-11.
Journal of Materials Science 39 (2004) 1473-1476 [14] Amada, S. and Lakes, R.
S., Viscoelastic properties of bamboo, Journal of Materials Science, 32 (1997) 2693-2697
Journal of Materials Science. 46-23 (2011) 7357-7368.

Journal of Chengdu University (Natural Science). 2003,22(3): 25- 30.
Jilin Normal University Journal (Natural Science Edition). 2013, 35(2): 12-17.
Ordnance Material Science and Engineering. 2004, 27(1): 68-72.
Journal of Chengdu University (Natural Science), 2003,22(3):25-30.
Journal of Anhui University(Natural Sciences)，2014:3-5.

Initially the properties of geopolymeric binder prepared using the source materials such as Fly ash and Ground Granulated Blast Furnace Slag (GGBS) without conventional cement have been investigated.
Ferrocement has superior advantages over other roofing materials and could well play a major role in housing construction in developing countries.
Experimental Program Materials Used.
Ghosh, Performance of Fly ash Based Geopolymer Mortars in Sulphate Solution, Journal of Engineering Science and Technology Review, 3(1) (2010) 36-40
Nagan, Flexural Behaviour of Trough Shaped Ferrocement Panels, International Journal of Innovative Research in Science and Technology, 3(2014) 14010-14016

Kozhukhova, Effect of previously slacked lime on properties of autoclave composite binders, World Applied Sciences Journal. 24 (11) (2013) 1519-1524 [10] A.
Volodchenko, Development of the composition of heat-insulating materials for autoclaved hardening based on clay raw materials, Bulletin of BSTU named after V.G.
Volodchenko, Aluminosilicate raw materials for the production of autoclave finishing materials, Bulletin of BSTU named after V.G.
Netsvet, Cellular composites with ambient and autoclaved type of hardening with application of nanostructured binder, IOP Conference Series: Materials Science and Engineering. 96 (2015) (1)
Baskakov, On the issue of improving the quality of domestically produced building mortars, Research Journal of Applied Sciences. 9 (12) (2014) 1202-1205

[4] Linbo,W. and Jiandong, D, “Compression Molding of Porous Scaffolds with complicated shape for Tissue Engineering”, Polymer Material Science and Engineering,Vol. 25 No.1. (2005), P. 296
,Hao A. and Zhihao, J, “Progress in research of preparation technologies of porous ceramics”,Ordnance Material Science and Engineering ,Vol.28 No.5 (2005), pp.60
Arumaikkannu,” Modelling for randomly oriented multi material additive manufacturing component and its fabrication,” Materials and Design Vol.54 (2014), P.779 [13] R.D.
Hague,” Laser sintering of polyamides and other polymers,” Progress in Materials Science Vol.57 (2012), P.229 [14] B.
Lohfeld,” Dependence of mechanical properties of polyamide components on build parameters in the SLS process,”Journal of Materials Processing Technology Vol.182 (2007), P.477–488 [15] Tancred, D.C., McCormack, B.A.O, “A synthetic bone implant macroscopically identical to cancellous bone”, Biomaterials, Vol.19 (1998), P.2303

On fire-proof paint thickness for steel under transient fire WU Wenzhong College of Energy Science and Engineering, Xi’an University of Science and Technology, China Email: wuwenzhong@tju.edu.cn Keywords: steel structure; fire-proof paint; fire; similarity form.
Journal of Building Structures, 2010, 31 (6): 0110-12 (in Chinese)
Journal of Building Structures, 2004, 25 (3): 0045-07 (in Chinese)
Journal of Building Structures, 2004, 25 (3): 0038-07 (in Chinese)
Journal of HV&AC, 2009, 39 (1): 127-129 (in Chinese)

But in the low frequency range, the absorption of high electromagnetic conductivity materials is the dominant mechanism of shielding.
So, high electromagnetic conductivity materials can be considered to be suitable electromagnetic shielding materials of low frequency
Materials Research Bulletion, 2000,35:403-409
[J] .Journal of Applied Polymer Science, 2005, 97 :1125-1138
Journal of Materials Science, 2002,37(5):116-119