Search results

Journal Citation (to be inserted by the publisher ) Copyright by Trans Tech Publications Hydrothermal Preparation of Granular Hydroxyapatite with Controlled Surface Koji Ioku 1, Manami Toda 1, Hirotaka Fujimori1, Seishi Goto 1 and Masahiro Yoshimura 2 1 Division of Applied Medical Engineering Science, Graduate School of Medicine, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan ioku@po.cc.yamaguchi-u.ac.jp 2 Materials and Structural Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama, Kanagawa 226-8503, Japan yoshimu1@rlem.titech.ac.jp Keywords: Hydroxyapatite, Granule, Porous Ceramics, Hydrothermal Abstract.
As starting materials, powder of α-tricalcium phosphate, gelatin and a vegetable oil were used.
If materials of HA could have the tailored specific crystal surface, the HA materials should have the advantage of adsorptive activity.
The authors reported various kinds of HA materials prepared by the unique hydrothermal methods [2-11].
These granular HA must have the advantage of adsorptive activity, in comparison with other reported materials [12], because the obtained HA has large specific crystal surface and micropores.

Lakeman, Journal of Power Sources, vol.155, pp.172-181, 2006
Demirci, Journal of Power Sources, vol.172, pp.676-687, 2007
Waring, Journal of Membrane Science, vol.228, pp.168-174, 2007
Suda, Journal of Power Sources, vol.126, pp.28-33, 2004
Scott, Journal  of Power Sources, vol.160, pp.407-412, 2006

Minamiguchi3 1 Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University 2-1 Yamada-oka, Suita, Osaka 565-0871 Japan 2 Student 3 Graduate student a sakai@mat.eng.osaka-u.ac.jp Keywords: AZ31B magnesium alloy, heavy reduction rolling, grain refinement, workability, high speed rolling, shear band, adiabatic heating Abstract.
The non-basal texture that improves workability of sheet materials is formed in the sheet rolled at high speed.
Textures in hcp metals have attracted significant interest because of the use of titanium alloys for light structural materials.
Yashiro: Journal of Japan Institute of Light Metals, 54 (2004), 465-471, (in Japanese)
Philippe: Materials Science Forum, Vol. 157-162(1994), p.1337

The Influences of Constitutive Models on the Collapses of OFHC Copper Cylindrical Shells under Impact Compression Shanxing Wu 1, a, Danian Chen 1,2,b, Dongfang Ma 2,c, Duo Zhang 1, Huanran Wang 2, Yanghui Jin 2 1 School of Astronautics, Northwestern Polytechnical University, Xi’an, Shanxi 710072, China 2 Mechanics and Materials Science Research Center, Ningbo University, Zhejiang 315211, China awusxdt@nbu.edu.cn, bchdnch@nbu.edu.cn, cenwail@sina.com Keywords: OFHC; cylindrical shell; constitutive model; impact test; numerical simulation; energy absorption; Abstract.
They used the material constants already determined by Johnson and Cook [8] and Zerilli and Armstrong [9] for the respective models.
They [9] analyzed the temperature and strain rate response of typical FCC and BCC metals and noticed a significant difference between these materials.
Acknowledgements The authors acknowledge the financial support from the National Nature Science Foundation of China under No.10872100.
Journal of Materials Processing Technology Vol.182(2007), p.319.

Generally, the doping into materials plays important role for the material properties.
Shimizu: Journal of Physics.
Shimizu: Key Engineering Materials, Vol. 962 (2019) p. 17 [11] H.
Shimizu: Key Engineering Materials, Vol. 853 (2020) p. 63 [12] H.
Shimizu: Key Engineering Materials, Vol. 1023 (2021) p. 9

In practical testing of materials we very often put the fresh samples to water to the age of 28 days.
Requirement for concrete was its composition available raw materials, low water-cement ratio and good workability.
This method works on intrusion of mercury to pores of studied piece of material.
Han, Material properties of air-cured ultra-high-performance steel-fiber-reinforced concrete at early ages, International Journal of the Physical Sciences, 5 (2010).
Parra-Montesinos, Ultra-high performance concrete and fiber reinforced concrete: achieving strength and ductility without heat curing, Materials and Structures, 45 (2011).

In 1992, Zhou and Vincent [2] proposed two types of fretting graph theory in a large number of different materials and test parameters, including the operating conditions fretting map and material response fretting map, and revealed the mechanism of fretting and damage laws essentially.
Material Response Fretting Map.
Aluminum because of its high strength and low density and become the major aircraft structural materials, but because of the geographical environment of aircraft, corrosion is very serious.
Science Press, 2002 [6] Shizhuo Li, Xianglin Dong.
Material erosion and fretting.

Introduction Concrete is the most widely used construction materials, which is a kind of composite materials composed of cement, sand and gravel[1].
Material and experimental method Material and mix proportion (1) Cement Lafarge Rui’an Reference Cement was used in these experiments, which were produced by Beijing Xingfa cement co., LTD.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (50878099), the western China communications science & technology program of Ministry of transport (200631822302-6 and 200831822367).
Factors influencing concrete strength [J].Journal of American Concrete Insitute, 1951,47(6):417-432
The New Concrete [M].Beijing: China Building Materials Press, 2008

Sharma, Engineering materials: properties and applications of metal and alloys, 2004, ISBN: 978-81-203-2448-0 [3] M.
Material.
Science Engineering, vol. 28 (2012) 012-042
Materials Science and Engineering: A, 302 (2001) 115-119
Dybowski, Vacuum carburizing—process optimization, Journal of Materials Processing Technology, 164–165 ( 2005) 876-881

Start-up Strategy to Achieve Excellent Efficiency of Degradation Acetate,Ethanol and Propionate in UASB Mingyue Zheng1,a,Mingxia Zheng2,b,Kaijun Wang2,c,Hai Yan1,d 1School of Civil and Environmental Engineering, Beijing University of Science and Technology, Beijing 100083, China; 2 School of Environment, Tsinghua University, Beijing 100084, China a mingyue.zheng84@gmail.com, b zhengmingxia@gmail.com, c wkj@tsinghua.edu.cn, d haiyan@sas.ustb.edu.cn Keywords: Anaerobic, Acetate,Ethanol,Propionate,Degradation,Start-up.
Materials and Methods Experimental set-up.
Acknowledgements This research is supported by the National Natural Science Foundation of China (Grant No. 50978146).We greatly thank to the financial supporting from Ministry of Science and Technology of China, the project numbers are 2008BADC4B16, 2008BADC4B18, and 2008AA062401.
Ozturk: Journal of Environmental Engineering-Asce Vol. 119(1993), p. 321-331