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However, the real geological or environmental materials are relative impurity compared with Pb standard.
This technique can be applied not only to geological samples, but also to a wide range of environmental samples such as marine sediments, carbonates, organisms or polluted pollution-source materials with high sensitivity and accuracy.
The double spike method can be used applied to Pb isotopic analysis any kind of sample, such as marine sediments, carbonates, organisms or polluted pollution-source materials with high sensitivity and accuracy.
Oversby: Journal of Geophysical Research, Vol.74(1969), p. 4338 [6] J.
Beard: International Journal of Mass Spectrometry, Vol. 193(1999) , p.87

Guangzhou 510642, China 1College of Materials Sci. and Tech., Beijing Forestry Univ.
Materials and Methods Materials Three A. chinensis were all collected from Guangzhou in China.
Journal of Fujian Forestry Science and Technology, 1974, (03): 44 [5] Zhong Ping.
Journal of Shandong Forestry Science and Technology, 2008, (02): 28-29 [12] Chen Xiweng.
Wood based material science[M].

Misra, Relating Materials Properties to Structure, Technomic Publication, Penn­ sylvania (1999) [3] H.
Balasubramanian: Composite Materials and Processing, Boca Raton : CRC Press (2014) [7] E.
Madaan: Development and characterization of PLA­based green composites: A review, Journal of Thermoplastic Composite Materials Vol. 27 (2014), p. 52­81 [27] M.
Lee: Characterization of Reinforcing Web Structures in Needle Punched Nonwoven Composites, Journal of Composite Materials Vol. 33 (1999), p. 2116­2132 [45] S.
Raghavendra: Jute fiber reinforced epoxy composites and comparison with the glass and neat epoxy composites, Journal of Composite Materials (2013), p. 1­11 [52] A.

The use of composite materials is increasingly growing at a rapid pace.
A new method of forming holes in fibrous polymer composite materials is proposed.
(eds) Composite Materials: Applications in Engineering, Biomedicine and Food Science.
Determination of the parameters of forming holes in an uncured woven composite by piercing with a pointed indenter, Engineering Journal: Science and Innovations # 9, 2017 .-- 14
[4] Kablov E.N. 2012 Strategical Areas of Developing Materials and Their Processing Technologies for the Period up to 2030, Aviation Materials and Technologies Publisher: All-Russian Scientific Research Institute of Aviation Materials (Moscow) ISSN: 2071-9140 [5] Nelyub V.A. 2013 Technologies for preparing prepregs All materials.

The development of polymer composites with nanoscaled modifiers has become an attractive new subject in materials science.
Coban, "Thermal conductivity of particle filled polyethylene composite materials," Composites Science and Technology, vol. 63, pp. 113–117, 2003
Bose, "Carbon Nanotube Based Composites- A Review," Journal of Minerals & Materials Characterization & Engineering, vol. 4, pp. 31-46, 2005
Popov, "Carbon nanotubes: properties and application," Materials Science and Engineering, vol. 43, pp. 61–102, 2004
Weisenberger, "Carbon nanotube polymer composites," Current Opinion in Solid State and Materials Science, vol. 8, pp. 31–37, 2004

All of the study show that the materials used in the three walls have good seismic behavior.
Mechanical properties of the materials are showed in Table.1.
In actual engineering, we have no necessary to use the steel-plates who have too high thickness to save materials.
We suggest that the materials above should be applied in civil engineering more and more widely.
Mechanical Science and Technology, 2003, 22(3):441-446

Dissolution concentrations in typical normal workpiece materials of PCBN tool material at different temperature are then calculated.
Fig.1 Absolute at different temperatures Fig.2 Solubility in typical workpiece materials Solubility of Al2O3 ceramic tool material in workpiece material respectively.
The machining tests were performed on workpiece materials in Table 1-4.
Vleugels: Diamond and Related Materials.
Mathew: Journal of Materials Processing Technology.

Some porous materials, such as silica gel, sepiolite, waste glass, volcanic ash have recently been used as raw materials to prepare HCMs [4-7].
Experimental Section Materials and sample preparation.
Results and discussion Properties of raw materials.
References [1] Ohashi Fumihiko, Maeda Masaki, Inukai Keiichi, et al, Study on intelligent humidity control materials: water vapor adsorption properties of mesostructured silica derived from amorphous fumed silica, Journal of Materials Science Letters, vol. 34(1999),pp. 1341-1346 [2] Zhang Huibo, HiroshiYoshino, Analysis of indoor humidity environment Chinese residential buildings, Building and Environment, Vol. 45(2010),pp. 2132-2140
Humidity control materials prepared from diatomite and volcanic ash, Construction and Building Materials, vol. 38(2013),pp. 1066-1072

The mechanical properties of different ratio similar materials should be tested before the similar material simulation test.
The main mechanical properties of the similar materials should be similar to the prototype.
Beijing: Science Press, 2007:1-251 [2] Yan Lizhang.
Study of the ratio of similar materials for simulating coal [J].
Journal of Shandong University (Engineering Science), 2009, 39(4):149-154 [8] An Weigang.

Journal of King Saud University – Engineering sciences (2017) 29, 295-299
Materials science & Engineering A 601(2014) 20-28
Journal of materials processing technology 209(2009) 5046-5053
Journal of Materials Science, 32(17), 4559–4573. https://doi.org/10.1023/A:1018625402103 [14] Sener Karabulut, Halil karakoc, Ramazan Citak.
Materials Science Forum, 849, 801–806. https://doi.org/10.4028/www.scientific.net/msf.849.801 [31] Li, D., Li, Q.