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Those with mean pore size less than 2 nm are called micro-porous ones and a mesoporous material have the mean pore size between 2 and 50nm and those with pore size larger than 50nm are called macroporous materials[8,9].
Porosity is a fraction between 0 and 1, different porous materials have different porosities, some of them are quite fixed and the porosity of different materials may be quite different [10].
Davis: Ordered porous materials for emerging applications, Nature, 2002, 417, p.813-821
Zhao: Journal of Material Chemistry, Vol.16 (2006), p.623-625
[9] Benxue Hu, Yanfeng Xu: Atomic Energy Science and Technology, Vol.43, No.5(2009), p. 431-434

Materials and methods The material used was Bioglass, known as 45S5 (45% SiO2, 6% P2O5, 24.5% CaO and 24.5 % Na2O all in weight percent) was prepared by melting at 1400°C for four hours and then quenched to the water to have powder form of the glasses.
[3] Ducheyne P. 1985, Bioglass coatings and bioglasscomposites as implant materials.
Res., p. 825-830 [5] Neo, M., Voig, C.F., Herbst, H., Gross, U.M., 1998, Osteoblast reaction at the interface between surface active materials and bone in vivo: A study using in situ hybridization, J.
Hoffman.,1996, Biomaterials Science : An Introduction to Materials in Medicine Academic Press.
Sandiego [7]Fazan F, Marquis PM.. 2000, Journal of Material Science: Materials in Medicine; 11: 787-792

In this investigation two types of materials SCM440 steel and S45C steel have been studied.
Experimental Procedure In this study two types of materials SCM440 and S45C have been used.
Table 1 and Table 2 show the chemical compositions of the tested materials, respectively.
Two kinds of materials SCM440 steel and S45C steel have been studied.
(Japanese) [9] MATEQ Ver. 1.1, The Society of Material Science, Japan, 2002

The elegantly modeled materials are exquisitely carved with skillful craft, as natural as though they were living.
The materials chosen are mostly from camphorwood and nanmu, catalpa wood, ginkgo wood, cypress wood, etc are also employed [2].
Symbolizing Shapes Adjusting to Materials and Ingenious Composition The wood carvings of the Confucius’ Temples in Hunan Province are mostly pragmatic.
In terms of architectural decorations,these wood carvings reflect the characteristics of symbolizing shapes adjusting to materials and their ingenious composition.
[2] Liu Xiangdong: “The Artistic Features and Cultural Implications of Hunan Folk Wood Carvings”, Journal of Changsha Railway University (Social Science Edition), 2007, the 3rd issue, 62

Khanzadeh3,c 1,2,3 School of Metallurgy and Materials Engineering, School College of Engineering, University of Tehran, Tehran, Iran, P.O.
SEM-BSE micrographs (see Figures 8 and 9) show that the interface was outlined by sharp transition between Al6061-Al5056 materials.
However, local melted zones were encountered in the front slope of waves in the interface of Al6061-SS304L materials.
SEM-BSE study shows the interface was outlined by sharp transition between the Al6061-Al5056 materials and local melted in the front slope of waves in the interface of Al6061-SS304L materials which grow with increasing explosive loading.
[2] Blazynsky.T.Z: Explosive forming, welding and compaction, Applied Science Publishers LTD, 1983

The test material and mixing ratio Test material.
Coarse aggregate: The lytag which is produced in Baotou Jingzheng building materials company.
Material is modified polypropylene, and the fiber length is 38 mm.
In order to avoid the interference with the mechanical properties of lightweight aggregate concrete and the fiber enhanced rule which is caused by admixture and mineral powder, this test is not mixed with admixture and mineral powder materials.
Acknowledgements This study is sponsored by the National Natural Science Foundation for Scholar (50908112) and Natural Science Foundation of Inner Mongolia (2010BS0710) and the Innovation Foundation of Inner Mongolia University of Science & Technology(2009NC036).

Li, Science 307 (2005) 538
Nie, Science 281 (1998) 2016
Alivisatos, Science 281 (1998) 2013
Travas-Sejdic, Journal of Luminescence, 127 (2007) 721
Wang, Materials Chemistry and Physics, 123 (2010) 98

Materials and Methods Materials.
Some intracellular material released and extraction resistance reduced, which can greatly improve the extraction and separation of materials inside the cells.
Food science in Chinese.
Food science in Chinese.
Strait Journal of Preventive Medicine in Chinese.Vol.10(2004),No.2, p.18-23

However, difficulty in processing entangled CNTs in epoxy limits the capability of CNT as reinforcing materials.
Polymer nanocomposites, which contain 5-25 wt% nanosilica, 0.5-1 wt% MWCNT and 1-5 wt% MMT nanoclay, were prepared using pretreated nanofillers and Epikote 828 epoxy materials.
These nanocomposite materials are very promising candidates for developing light weight structures that can provide more damage resistant and tolerant properties compared to the conventional epoxy system.
Hodzic, Effect of silica nanoparticles on compressive properties of an epoxy polymer, Journal of Materials Science 45 (2010) 5973-5983
Gorga, Review article: Polymer-matrix nanocomposites, processing, manufacturing, and application: An overview, Journal of Composite Materials 40 (2006) 1511-1575

The use of carbon-based materials as CE components marks a significant advancement, offering a viable replacement for Pt materials with comparable performance at reduced manufacturing costs [9-10].
However, carbon-based materials like rGO often display low catalytic activity.
Experimental Method Materials The study employed various materials, with graphite powder, 85% H3PO4, 30% H2O2, and KMnO4 (all from Merck) being used for GO synthesis.
This analytical technique determines the absorption capabilities of semiconductor materials [37].
Hegedus, Handbook of photovoltaic science and engineering.