Search results

Study on Indoor Formaldehyde Neutralization by Using Anatase and Rutile Nanotitania AQILAH Sapieea, MEORYUSOFF M.Sb, MAHDI E.Mc and SITI SALWA Z.Ad Materials Technology Group, Malaysian Nuclear Agency, Bangi, 43000 Kajang, Selangor, Malaysia.
Introduction Formaldehyde, a colourless, flammable and pungent smelling gas is used as adhesive in majority of household products and building materials [1].
The paints were then painted on glass slides and inserted into a gas tube and tested according to ISO/CD 22197-4 Test method for air-purification performance of semiconducting photocatalytic materials – Part 4: Removal of formaldehyde.
Photocatalytic Surfaces: Environmental Benefits of Nanotitania, The Open Materials Science Journal. 3 (2009) 6-27. [6] A.
XRD and EDXRF Analysis of Anatase Nano-TiO2 Synthesized from Mineral Precursors, Advanced Materials Research. 620 (2013) 179-185.

However, none of them are practically successful because of the complicated fabrication processes and/or high materials/processing costs.
Based on this structure, light emission is realized by adding a zinc oxide (ZnO) layer as the light emitting material.
The HEES itself consists of 3 layers of materials (Fig.1a): an n-doped single crystal Si substrate, a layer of heavily n-doped polycrystalline Si (~1×1019 cm-3) and a very thin layer (6-12 nm) of Si dioxide (SiO2) formed by wet-oxidation of polycrystalline Si.
Acknowledgments The authors would like to express their sincere gratitude to the School of Materials Science and Engineering at Nanyang Technological University Singapore, especially to Professor Wong Chee Cheong for the strong support in experiments.
Arakawa, “Hybrid p-n junction light-emitting diodes based on sputtered ZnO and organic semiconductors”, Applied Physics Letters, Vol. 95, 2009 [6] Zhuxi Fu, Bixia Lin, Changxin Guo, Guihong Liao, “The characteristics of luminescence of zinc oxide thin films”, Chinese Journal of Semiconductors, Vol 20, 1999 [7] A.

Introduction In the forming processing of magnesium alloys, the mutual friction between the materials and tool is one of considerably important problems.
The specimens used were made from three types of materials,AZ31, AZ61 and AZ91.
Before a testing run, lapping was done to remove the surface oxidation film of the materials - tool contact surface.
Compression tools were heated until the setting temperature reached, the materials were then put between tools, and it was kept until materials reached the setting temperature.
Higashi, Investigation of Dynamic Friction Properties of Extruded AZ31 Magnesium Alloy by Ring – Typed Compressive Testing, Journal of the JSTP, vol.49 no.572(2008-9), pp. 901-905

Results from XRD clearly show that phosphate glass and HA can be successfully synthesized using natural materials.
Nonetheless, such materials have limitations regarding their mechanical, biodegradability, and other properties [9].
Materials and Methods Materials Preparation In order to obtain HA for the experiment, bovine bone was boiled at 150 °C for 3 days.
In the meantime, the phosphate glass was prepared by using NH4H2PO4, NaH2PO4, and CaO as raw materials.
Fischer, “Scaffolds for bone healing: Concepts, materials and evidence,” INJRY. 42, 569-573, (2011) [5] M.

Environmental Science. 29(2008) 2345-2349
Environmental Science. 29(2008) 2628-2632
Journal of Biotechnology. 111(2004) 297–309
Journal of Sichuan University (Engineering science edition). 41(2009) 86-90
Environmental Science. 26(2005)98-101

Material and methods Experimental materials.
Chinese Journal of Environmental Engineering, 2007, 1(6): 397-400(In Chinese)
Ecologic Science, 2000, 19(4):67-72(In Chinese)
Environmental Science and Technology, 2004(4):17-19(In Chinese)
Journal of Beijing Normal University (Natural Science), 2009, 45(5/6): 509-514(In Chinese)

TiC-Ni); 13. composites materials based on alumina or zirconia; 14. superconductors and other electronic materials. 2.
Army Materials Testing Laboratory.
Another very successful area is in-situ formation of porous materials with controlled porosity.
Merzhanov, Combustion and Plasma Synthesis of High Temperature Materials, Eds.
Aruna, Chemistry of Nanocrystalline Oxide Materials, World Scientific, 2008

Drilling sealing material is cement mortar.
Coal Science and Technology, 2011,39（1）: 6-10 [3] OUYANG Zhenhua, OUYANG Zhenhua,  ZHANG Yin et c.
JOURNAL OF XI’AN UNIVERSITY OF SCIENCE AND TECHNOLOGY, 2003, 23(4):372-274 [6] Li Tonglin.
Earth Science-journal of China University of Geosciences, 1994, 19（4）, 537-545 [7] Ni Xiaoming, Su Xianbo et c.
Journal of China University of Mining & Technology, 2010, 39（5） [8] Wu Fubing.

After onsets of subsoil liquefaction, the properties of subsoil are similar to liquid that shear wave cannot propagate through the material.
Yasuda, et al.: Journal of Geotechnical and Geoenvironmental Engineering Vol. 132 (2006), p. 237-247
R., Li, et al.: Northwestern Seismological Journal Vol. 31 (2009), p. 8-14.
Sun: Journal of Rock and Soil Mechanics, Vol.31, No.12 (2010), p.3823-3828.
Sun: Journal of Basic Science and Engineering Vol. 18 (Suppl.) (2010), p. 189-199.

However, the frequent use of de-icing salt causes the salt frozen erosion damage of concrete, at the same time, it induces to internal corrosion of steel bars and concrete material performance, furthermore, it will also result in the bridge structure durability degradation, shorten the service life of the bridge.
Factors influencing the frost resistance of concrete and freeze-thaw damage is very complex, as for concrete material itself factors, water cement ratio of concrete is the main factor.
Journal of Qingdao university of science and technology, 2006,27(4):30-33
Journal of shanxi architecture, 2008,34(4):297-298.