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Online since: November 2013
Authors: Yan Zhen Yu, Yu Zhong Guo, Ming Li, Guang Yong Yan
Detection technology Sodium chlorite is the main raw material of producing chlorine dioxide , Therefore, in the process of production, there is always different concentrations of chloride .
Acknowledgements This work was funded by the National Scientific Foundation China (NSFC51178207), Shandong Provincial National Science Foundation (ZR2011EEM003), the Natural Science Foundation of Shandong Province (ZR2012EEL21).
Journal of environmental and health magazine, 2010, 27 (8): 742-744
Journal of tap water in shenzhen, 2001, 3:13 to 17
Beijing, science press, 2007.
Online since: July 2013
Authors: Min Chie Chiu, Ho Chih Cheng
Becquerel found that a small electric current could be produced when certain materials were exposed to light [5].
The other is a solar cell’s photovoltaic (PV) that directly converts light into electricity through light sensitive materials.
Puddicombe: Science Creative Quarterly, Vol. 6 (2011)
Chiu: Journal of Applied Sciences, Vol. 10, No. 17 (2010), p. 1944
Chiu: Information Technology Journal, Vol. 9, No.7 (2010), p. 1458
Online since: January 2013
Authors: Er Shun Pan, Yu Guo, Zhi Li Sun, Wei Song
PCB substrate material is FR-4 which overlying copper foils.
Coordinates are used to select nodes region of different materials.
Journal of Northeastern University, Vol. 32(12),2011, p. 1749-1752
Journal of Northeastern University.
Mechanical Science and Technology for Aerospace Engineering, Vol.29(1) 2010, p. 54-58
Online since: February 2013
Authors: Hua Guang Li, Hua Liu, Su Liu
Materials Main materials.
The protocols were conducted in accordance with Guidance Suggestions for the Care and Use of Laboratory Animals, formulated by the Ministry of Science and Technology of China.
Acknowledgements This work was financially supported by Hebei Education Department (Z2010224) and Zhangjiakou Science and Technology Board (0801006D).
[4] Jin Dadi,Sun Wei,Wang Jixing,et al.Potential clinical evaluation of ni tric oxide synthase inhibitor for th e treatment of osteoarthritis.Chinese Journal of Orthopaedics,2002,22(6):367.In Chinese
Chinese Journal of Cell Biology, 2007,29:785-90.
Online since: December 2013
Authors: Li Lan Gao, Chun Qiu Zhang, Bao Shan Xu, Yu Tao Men, Hai Ying Liu, Yu Zhou
The results showed that in the surrounding area of defects Mises stress, compressive strain and pore pressure are affected by the amount of compression and modulus of materials.
Introduction Articular cartilage (AC) is a kind of superior load-bearing materials, which play an key biomechanical role by reducing impact load, providing frictionless articulation ,as well as distributing applied loads over joint area.
When biphasic materials is subjected to loading ,the liquid pressure will increase instantaneously and carry most of the total stress, so it can decrease the force on solid matrix phase stress, and reduce surface friction.
Fig. 7 Pore pressure in different compression Fig. 8 Pore pressure in different modulus  Discussion and Conclusions Under slide loading conditions, different compressions and modulus of artificial cartilage material have impacts on the mechanical state at the defects.
Acknowledgements The project was partly supported by the National Natural Science Foundation of China (Nos. 31000422, 11172208, 81272046).
Online since: July 2012
Authors: Hong Chen, Jin Liang
Introduction Nanocrystalline materials have attracted great interest because of their unique physical and chemical properties, which are significantly different from their microcrystalline counterparts[1].
Recently, as an important kind of rare earth oxide, the synthesis of nanocrystalline ceria attracted much attention due to its wide application in the field of luminescent materials, electronic ceramics, radiation-resistant glass, chemical mechanical polishing, fuel cell and automotive exhaust gas purification catalytic materials, etc[2,3].
Acknowledgements This work was financially supported by the Natural Science Foundation of China (No. 30871976) and the Natural Science Foundation of Hunan Province (No. 11JJ2021).
Materials Letters 58 (2004) 390-393
Journal of Solid State Chemistry. 181(2008) 1614-1620.
Online since: July 2015
Authors: Souad A.M. Al-Bat’hi, Maizatulnisa Othman
Al-Bat'hi1 and Maizatulnisa Othman2 1, 2Department of Manufacturing and Materials Engineering, Faculty of Engineering, International Islamic University Malaysia (IIUM), Gombak, Malaysia su3ad@iium.edu.my Keywords: ZnO, Thin Films, (RF) Sputtering, Optical Properties, TCO substrate Abstract: This investigation deals with the effect of temperature on the optical and morphological properties of Zinc Oxide thin films prepared by radio-Frequency (RF) magnetron sputtering technique.
Science 2006; 312:242–6 [4] Klaus Ellmer, Andreas Klein, B.
Solar Energy Materials and Solar Cells, 93(8), 1356–1365. doi:10.1016/j.solmat.2009.02.018 [6] Park, J.
Journal of Materials Science: Materials in Electronics, 24(1), 142–147. doi:10.1007/s10854-012-0957-5 [9] Kim, S., Moon, Y., Moon, D., Hong, M., Jeon, Y., & Park, J. (2006).
Materials Science-Poland, 25(3).
Online since: January 2012
Authors: Pei Jiang Li, Ting You, Jian Wei Shen, Guan Jun Tong
Development of Acoustic Emission High-speed Data Acquisition System You Ting1, a, Li Pei-jiang2, b, Tong Guan-jun3, c, and Shen Jian-wei4, d 1Department of Electrical and Computer Engineering Quzhou College Quzhou, China 2Department of Electrical and Computer Engineering Quzhou College of Technology Quzhou, China 3Shanghai Institute of Technical PhysicsChinese Academy of Science Shanghai, China 4Technology Development SectionZhejiang Switch Device Co, LtdQuzhou, China ayoutingmail@163, com, blpj669 @163, com, cguanjun.tong@gmail.com, dsjw1818@sohu, com Keywords: Acoustic emission detection; CPLD; USB2, 0; High speed; Data acquisition system Abstract.
well as rapidly, In this paper, an USB based acquisition system for acoustic emission signal is designed, which adopts CPLD as controller and uses two high-speed A/D converters to achieve synchronous acquisition of two-channel acoustic emission signals, The system first puts collected data into a FIFO and then transfers data to host through USB using CY7C68013, The sampling frequency of the system is up to 10MHz and the transmission rate of USB is 40M/S, Hard body impact test and lead-breaking test indicate that the system can achieve real-time acquisition of acoustic emission signal well, Introduction With the continuous development of detection technique, acoustic emission detection, an important emerging non-destructive detection technique is more and more widely used in many industries, It is primarily a new dynamic non-destructive detection method to determine the extent of internal damage utilizing stress wave issued from internal structure, The detection theory is: the material
under external or internal force will deform or fracture and release stress strain energy in the form of elastic wave, the phenomenon is referred to as Acoustic Emission (AE for short) [1], AE is a common physical phenomenon, If the released strain energy with AE is large enough it will generate the sound which is audible to human ears, Most metal materials send out so weak AE signal when plastic deformation and fracture occur that cannot be directly heard by human ear, AE signal has a wide frequency range which covers infrasonic frequency, acoustical frequency and ultrasonic frequency, It is necessary to adopt sensitive electronic instrument for detection, AE signal is acquired from the components or materials in motion and variation as well as is off-line analyzed combined with the AE physical characteristics of material, so the potential defects in the components or materials can be detected [2-3], AE signal is generally a high-frequency signal which is burst and broadband,
these two experiments and display the waveforms according to 128:1 (display 1 dot per 128 points), as shown in Figure 6 and Figure 7, Figure 8 and Figure 9 are FFT waveforms of the two groups of signals respectively, Fig. 6 Waveform of impact test Fig. 7 Waveform of lead-breaking test Fig. 8 FFT of impact test Fig. 9 FFT of lead-breaking test Comparing these two waveforms and their FFT results, it can be seen that the wave peak of impact test is smaller, the frequency is low and the bandwidth is narrow; while the waveform generated by lead-breaking test has higher frequency components and the bandwidth is wide, The experiment shows that the AE high-speed data acquisition system can capture AE signal and meet the accuracy demand of AE data acquisition, After data transmission test, the USB transfer rate of the system is up to 42MB/S, which satisfies the transmission rate request of the system, References [1] Editorial review board of "Training materials
for qualification and certification of NDT personnel by science, technology and industry for national defense", Acoustic Emission Test [M], Beijing: Mechanical Industry Press, 2005, [2] Yang Yingjun, Qin Li, et al, The Design of Multi-channel High-speed Data Acquisition System [J], Micro Computer Information, 2008, 24 (2-2):169-170, [3] Yang Ruifeng, Ma Tiehua, A Study on the Application of Acoustic Emission Technique [J], Journal of North University of China (Natural Science), 2006, 27 (5): 456-461, [4] Sell J, Overview of new Acoustic Emission (AT) Systems [C], EWGAE, 2004: 691-698, [5] Tong Guanjun, Wang Ruli, The Development of Multi-channel Acoustic Emission High-speed Data Acquisition System [J], Non-destructive Testing, 2009, 31 (2): 150-153, [6] H, Goto, Y, Hasegawa, and M, Tanaka, “Efficient Scheduling Focusing on the Duality of MPL Representatives,” Proc, IEEE Symp, Computational Intelligence in Scheduling (SCIS 07), IEEE Press, Dec, 2007, pp, 57
Online since: November 2013
Authors: Pramuan Tangboriboonrat, Sa Ad Riyajan, Duangporn Riyapan
Preparation of Polymer Composite: Low Natural Rubber, Cassava Starch and Palm Fiber Duangporn Riyapan1,a, Sa-Ad Riyajan2,b and Pramuan Tangboriboonrat3,c 1Department of Materials Science and Technology, Natural Product Research Center of Excellence, Faculty of Science, Prince of Songkla University, Songkhla, 90110, Thailand Phone +6674888361, Fax 66 74446925 2Department of Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand be-mail: saadriyajan@hotmail.com Keywords: Natural rubber, palm fiber length, composite, chemical agent Abstract: The objective of this present work was to the preparation of polymer composite from low grade natural rubber (LNR), cassava starch (CSt) and palm fiber by using two-roll mill and then compression molding.
Introduction Nowadays, the rubber composites which made from two or more constituent materials with significantly different physical or chemical properties are attracting for area of research and development.
Among the different natural fibers, oil palm fibers appear to be promising materials due to toughness of oil palm fiber [2].
Experimental 2.1 Materials: The main materials used for this work were Low grade natural rubber (Rubber Research Institute), potassium persulphate 99%, RFCL Ltd (India) while CSt containing 32% amylose was purchased from General Starch Co.Ltd, Bangkok, Thailand.Palm fiber was obtained from oil palm frond through a process developed by Local Thailand.
International Journal of Modern Eng Research (IJMER).6 (2012) 4683-4690
Online since: February 2011
Authors: Wei Li Li, Xi Hong Li, Yu Long Ding, Yun Hong Jiang, Yu Qian Jiang
Scientists have done researches on ZnO as antibacterial materials since the early 1950s [3].
Recently, nanomaterials have drawn more attentions because of the functionalities unavailable to micron structured materials [4].
The results will provide necessary references for development and research of coating materials and antibacterial agents.
Materials and methods Dry ZnO nanoparticles (Romeoville, IL, USA) with the diameter of 200~400 nm and polyethylene Glycol 400 (PEG400) and PVP from Fluka (Milwaukee, WI, USA) were used in this work.
Journal of Colloid and Interface Science, 2005, 283(2): 380-384.