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Online since: November 2014
Authors: K. Gross, Arturs Vīksna, Anastasija Jersova
Synthesis of peroxyapatite by hydrothermal processing Karlis Agris Gross1,a *, Anastasija Jersova2,b, Arturs Viksna2,c 1Institute of Biomaterials and Biomechanics, Riga Technical University, Latvia 2Faculty of Chemistry, University of Latvia, Latvia akgross@rtu.lv, banastasija-jershova@inbox.lv, cartvik@lanet.lv * corresponding author Keywords: peroxyapatite, hydrogen peroxide, hydrothermal processing, antibacterial.
Inclusion of peroxy ions inside the structure of biomaterials is possible only with a select few biomaterials.
Hydrogen peroxide treated powder led to a clear peak, indicating successful generation of oxygen and inclusion in the apatite structure.
An unprecendented process of peroxide ion formation and its localization in the crystal structure of strontium peroxy-hydroxyapatite Sr10(PO4)6(O2)x(OH)2-2x.
Online since: December 2014
Authors: Narong Mungkung, Nuttee Thungsuk, Tanapoj Chaikeeree, Toshifumi Yuji, Nat Kasayapan, Peerapong Nuchuay
There actor portion is composed of stainless steel (SUS316), and the fundamental structure of the equipment is a cylinder that is 430 mm in bore and 180 mm in height.
The electrode has a structure that allows the formation of uniform thin films and can vapor-deposit a metallic thin film in low-temperature plasma.
The port for gas exhaust, which is a fundamental structure in plasma equipment, is installed in the reactor side face.Fig.2 showed photograph of plasma deposition in plasma power: 300 W., Vacuum level: 2.4´102 Pa., Ar gas flow rate : 10 L/min and N2 gas flow rate : 0.5 L/min condition.
Hsu, Materials Chemistry and Physics 120 (2010) 181–186 [6] J.
Online since: January 2013
Authors: Wei Wei, Guo Tong Qin, Pan Qiao Duan
Preparation of Corrosion-resistant Ti/RuO2 Composite Powders Panqiao Duan1, a, Guotong Qin1, b*, Wei Wei2, c 1 School of Chemistry and Environment, Beihang University, Beijing 100191, China 2 School of Arts and Science, Beijing Union University, Beijing 100191, China apanqiao1219@sina.com, b*guotongqin@yahoo.com.cn, cweiwei@ygi.edu.cn Keywords: Precipitation, Ti/RuO2 composite powders, Corrosion-resistant.
In this paper, RuO2 coated Ti powder composite particles are prepared by precipitation and at the same time, its structure and corrosion resistance property are characterized.
The high resolution TEM (Fig 1.d) shows the RuO2 and Ti crystal structure.
Since high sintering temperature (higher than 600°C) makes RuO2 easy to decompose to Ru and release O2, destroying oxide coating structure, the sintering temperature must be controlled less than 600°C [16].
Online since: April 2012
Authors: Lih Jiun Yu, Ahmad Haji Sahrim, Ing Kong, A.Taraweh Mouad
The unique structure of CNTs and outstanding properties in terms of mechanical and electrical have been extensively studied and reported since the discovery of carbon nanotubes by Iijima [4].
Kim, Dispersion and field emission properties of multi-walled carbon nanotubes by high-energy milling, Materials Chemistry and Physics 110(2008) 363-369
Harris,Carbon nanotubes and related structures: new materials for the 21st century, Cambridge, University Press, 1999
Chen, The influence of single-walled carbon nanotube structure on the electromagnetic interference shielding efficiency of its epoxy composites, Carbon 45 (2007) 1614-1621
Online since: July 2014
Authors: Wu Zhou, Min Chao Liu
Therefore, mild stress had a positive impact on active oxygen scavenging system in plants, as a result SOD and CAT activities increased, and they eliminated the free radicals, protected the membrane structure of plants and kept regular growth.
This was because added metals impacted the cell structure of biological, made biological membrane lipid occurred peroxidation phenomenon, and damaged the membrane structure, which causing the disorder of cell metabolism in plants and free radicals accumulation, consequently, MDA content rose sharply.
Environmental Chemistry, 2002, 21(4)318-324
Online since: May 2014
Authors: Pekka Lehtinen, Jouni Partanen, Santeri Laurila, Matti Kaivola
Fig. 2: Two structures that have the same shape, but a different number of layers.
Manufacturing parts with overhanging structures requires that the projected light does not penetrate deep into the resin.
Even though the experiments were done using only a single resin,the same behavior can be expected for other SL resins, since their chemical structures are similar.
André: Study of the spatial resolution of a new 3D microfabrication process: the microstereophotolithography using a dynamic mask-generator technique, Journal of Photochemistry and Photobiology A: Chemistry, Vol.107, p. 275-281, Elsevier (1997)
Online since: June 2014
Authors: De Zhi Wang, Cai Li Zhu, Fu Zhou Zhao
The research of low band gap width and high corrosion resistance semiconductor materials as well as structure optimization of electrode is the key technologies to PEC method『2』.
Arkia Yohida’s research shows that the tunnel structure of semiconductor catalyst values are better than ion exchange layered catalyst [5].
If the nanotechnology can be applied to the structure of catalytic surface material, the decomposition rate of water can enhance 100 times.
Progress in Chemistry, 2005, 20 (10): 1-4
Online since: August 2011
Authors: Chi Min Shu, Ming Yang Liu, Tung Feng Hsieh, Chia Jung Hsieh, Chia Chih Chuang
., Changhua Taiwan 50094, ROC 2Department of Applied Chemistry of National Chiao Tung University, 1001 University Rd., Hsinchu, Taiwan 300, ROC 3Photovoltaics Technology Center, Industrial Technology Research Institute, 4, Jhongsing Rd., Sec. 195, Jhudong, Hsinchu, Taiwan 31040, ROC 4Department of Safety, Health, and Environmental Engineering, NYUST, 123, University Rd., Sec. 3, Douliou, Yunlin, Taiwan 64002, ROC amingyang@ctu.edu.tw, btfhsieh@ctu.edu.tw, clily235813.ac97@nctu.edu.tw, dCCChuang@itri.org.tw, eshucm@yuntech.edu.tw Keywords: composite electrode, multi-walled carbon nanotubes (MWCNTs), supercapacitior, specific capacitance.
Fig. 1(a) depicts the carbon nanotubes supercapacitor structure.
Fig. 2 (c) shows two main separate and sharp peaks in Raman spectra at D mode (1350 cm-1) and G mode (1580 cm-1) after MWCNTs were immersed in HCl for a long time, the presence of G mode is related to the existence of graphite structures in the electrodes.
Because their nanoscale structure with a very large surface area can carry and store more charge.
Online since: December 2011
Authors: Hong Shuang Di, Da Sen Bi, Liang Chu, Jian Ping Li, Xu Ma, Yan Bi, Lin Lin Luo
The schematic diagram of punch, blank and die as well as the main structure sizes of the punch and die are showed in Fig.1.
Acknowledgement This work was supported by open found of the state key lab of rolling technology and automation of northeast university, and Tianjin scientific and technical support project under Grant No. 09ZCKFGX02700, and Tianjin Key Subject for Materials Physics and Chemistry.
Chouhan: Journal of Materials Processing Technology Vol.186(2007),p.120-124 [4] V.Miguel,J.Coello,A.Calatayud,M.C.Manjabacas,et al.: Journal of Materials Processing Technology Vol.209(2009), p.1588-1596 [5] Y.H.Moon,D.W.Kim,C.J.Van Tyne: International Journal of Mechanical Sciences Vol.50(2008), p.666-675 [6] Sai SudhaRamesh,C.M.Wang,J.N.Reddy,K.K.Ang: Engineering Structures Vol.30(2008), p.2687-2706 [7] Zhang Dongjuan,Cui Zhenshan,Ruan Xueyu,Li Yuqiang: Computational Materials Science Vol.38(2007),p. 707-715 [8] Kou-Long Lee,Wen-Fung Pan,Ju-Nan Kuo: International Journal of and Structures 38(2001), p.2401-2413 [9] M.Goodarzi,T.Kuboki,M.Murata: Journal of Materials Processing Technology Vol.162-163(2005), p.492-497 [10] L.Rafael Sanchez: International Journal of Mechanical Sciences Vol.42(2000),p.705-728 [11] G.Ferran,M.A.de Almeida: Journal of Materials Processing Technology Vol.115(2001), p.114-117
Online since: July 2013
Authors: Wei He, Jia Zhang, Yuang Ming Chen, Shou Xu Wang, Yuanming Chen
The through hole structure used in the process evaluation were 3.0 mm and 3.5 mm in hole depth with various sized hole diameters.
The plating uniformity is influenced by the solution chemistry and solution vibration frequency conditions.
In general, the low current density is beneficial to promote the throw powering, but it can’t be too low, it is easy to make the copper crystallization rough, and the more serious result is crystal structure become column structure.