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Eventually the ridges become well separated and thinner, seeing that the etchant consumes most of the materials.
Khan, "Transistors and detectors based on GaN-related materials," in Group III Nitrides Semiconductors Compounds, B.
Ahmed, "Structural and Surface Studies of Undoped Porous GaN Grown on Sapphire," Advanced Materials Research, vol. 620, pp. 45-49, 2013
Kwong, "Porous GaN for Gas Sensing Application " Advanced Materials Research, vol. 1043, pp. 50-56, 2014
Hassan, "A Novel AC Technique for High Quality Porous GaN," International Journal of Electrochemical Science, vol. 8, 2013

Alexandrov, Bulk nanostructured materials from severe plastic deformation.
Progress in Materials Science. 45 (2000) 103-189
Progress in Materials Science.
IOP Conference Series: Materials Science and Engineering. 63 (2014) 1-10
International Journal of Material Forming. 2 (1) (2009) 85–88.

Experimental Preparation of SiC ceramic membrane supports for gas-solid separation which involves many kinds of raw materials.
The experiment raw materials are shown in table 1.
Table 1 Raw materials for samples Raw materials Production place Particlesize SiC Ningxia 250μm Kaoline Guangdong ≤15μm Feldspar powder Hebei ≤15μm Silica powder Heibei ≤15μm Charcoal powder Shanghai 38~44μm Sintering aid which has a specific melting point and chemical composition, is adopted by using of Al2O3-K2O-SiO2 ternary phase diagram.
Journal of membrane science, 1999, 156(1): 141-152
Journal of materials science, 1998, 33(4): 913-921

Experiments The substrate materials are 20 steel and pure copper plates.
This will accelerate the process of the corrosion and the removement of surface materials.
References [1] Xie Haowen, Zhang Bangwei: Journal of Materials Processing Technology Vol. 124(2002), pp. 8-13
[11] Weilong Liu, Shuhuei Hsieh, Wenjauh Chen: International Journal of Minerals, Metallurgy and Materials Vol.16 (2009), pp.197-202
[16] Jinku Yu, Tianfu Jing,Jun Yang,Qun Li: Journal of Materials Processing Technology Vol.209(2009), pp. 14-17.

Environmental concerns have led to an increase in demand for environmentally friendly materials.
Bamboo is one of the locally available natural materials that has received attention in recent years for the creation of a new category of bamboo fiber reinforced composite materials.
Prepare the tools and materials first.
[5] Yan Yu, Hankun Wang, Fang Lu, Genlin Tian, Jinguo Lin, “Bamboo fibers for composite applications: A mechanical and morphological investigation”, Journal of Materials Science, 49(6), pp. 2559–2566, 2014. doi: 10.1007/s10853-013-7951-z
Harries, “Bamboo reinforced concrete: a critical review”, Materials and Structures/Materiaux et Constructions.

b) Domestic raw material suppliers can only provide materials of general requirements; it is difficult to meet the technical requirements, quality requirements and inspection requirements of nuclear materials.
c) Localization of nuclear power materials still remains to be done.
Countermeasures and suggestions In view of the existing problems of procurement and manufacturing of nuclear power materials, we need to do a lot of work: (a) Establish Chinese nuclear power standards and nuclear materials system America ASTM has a set of material system on materials which are used in the nuclear reactor pressure vessel.
Journal of University of South China (SOCIAL SCIENCE EDITION), 2005, 6 (6): 38-42.
Shanghai science and Technology Press, 2008

References [1] ZHOU Zhi-gang,ZHANG Qi-sen, “Summary of the research on performances of geotechnical reinforcement materials,” Journal of Transport Science and Engineering,Vol.17(2001),pp.38-42
[3] NI Fu-jian,YIN Ying-mei,GAO Ming-sheng, “Lab simulation study on reflective cracking resistance of treatment with fiberglass-polyester paving mat,”Journal of Southeast University(Natural Science Edition) ,Vol.37(2007),pp.128-131
[5] WANG Xuan-cang,LIU Kai,LI Shan-qiang, “Study on resistance to reflective crack of interlayer materials in asphalt overlay,” Journal of Building Materials ,Vol.13(2010),pp.247-252
[14] Sidnei H C,Teixeira,Benedito S, et al, “Pullout resistance of individual longitudinal and transverse geogrid ribs,”Journal of geotechnical and geoenvironmental engineering,”Journal of Geotechnical and Geoenvironmental Engineering,Vol.133(2007),pp.37-50
[16] LI Shu-ming,XU Zhi-hong,CAI Xi-mian, “Analysis of impact of geotextile on stress of composite pavement structure,”China Journal of Highway and Transport, Vol.19(2006),pp.28-31

Introduction The discussion about a dutiful utilization of materials and energy sources is not only confined inside the scientific community and is becoming more and more popular among people.
In fact, several investigations on thermal and flow characteristics of porous materials have been published in the last few decades and uncountable kinds of configurations and arrangements, partially or fully filled by porous media, have been proposed and analysed [26],[88],[89].
, International Journal of Thermal Sciences 47, pp. 103-111
Nguyen (2005), Heat Transfer and Fluid Flow of Nanofluids in Laminar Radial Flow Cooling Systems, Journal of Thermal Sciences 14, pp. 362-367
Vo-Ngoc (2009), Experimental Investigation of Nanofluids in Confined Laminar Radial Flows, International Journal of Thermal Sciences 48, pp. 1486–1493

Kashutin, Amorphous hydrothermal nanosilica: production technology, physical and chemical characteristics, experience and possibilities of innovative application for inorganic materials science
Bazhenov, Resource- and energy-saving technologies of building materials.
New research areas in building materials science, Part 1.
Volokitin et al., Methods and technology of production of heat insulating materials from mineral raw materials.
Volokitin et al., Methods and technology of production of heat insulating materials from mineral raw materials.

Materials Science and Engineering A, 1993, 173(1-2): 169-172
Materials Science and Engineering A, 2007, 448(1-2): 189–203.
Journal of Huazhong University of Science and Technology(Natural Science Edition), 2010, 38(12): 126-132.
Materials Science and Engineering A, 2003, 341(1-2) : 296-306
Materials and Design, 2009, 30(7): 2685–2692.