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Online since: July 2011
Authors: Bing Tao Liu, Hai Rong Wang, Li Zhang
Water suspended material in deep treatment, organic content low less.
The accumulation of suspended material and biomass increases, biofilm filter column happening during operation.
Short-term backwash and local backwash effect of of removing ammonia nitrogen Because the interception and a large number of inorganic materials of heterotrophic bacteria growth, biofilm filter water changes the head loss in the more apparent[5].
Journal of hazardous materials,Vol.101(2003)p.219-229 [3] Le Bihan Y, Lessard P M.
Beijing: Science press, 2004 [8] LiYanCheng.
Online since: August 2012
Authors: Yi Lin, Yan Fei
Nowadays the design concept of green buildings and the development of the energy-efficient building materials and construction greatly improve the energy-efficiency performance of glass curtain wall.
As to the materials, we choose aluminum for integrated forming, with fluorine carbon painting on the surface, thus realize the diffuse reflection of sunlight instead of discomfort glare.
Journal of Xi’an University of Architecture & Technology (Natural Science Edition), 2001 (4), pp392-396 [4] Shen Ying-wu, New Glass Materials [J].
New Chemical Industrial Materials, 1999, 27(9), pp26-28 [5] Lu Qiu, European Intelligent Office Building and Intelligent Glass Façade [J].
Online since: October 2012
Authors: Tie Xin Dong, Zhen Yu Yan
Sustainable material and the traditional construction technique The material in this project is also a point worth to mention, especially the brick and the tile(Figure14).
During the design phase, the assistant asked Wang Shu what kind of material you want to use.
The use of material and the interest in the traditional construction technique are the personal habit of the architect.
[3] WANG Shu and LU Wenyu: Poetics of Construction with Recycled Materials (A World Resembling the Nature), Time Architecture (2012)
[5]YANG Zhou: On the National Spirit of China’s Classical Paintings, Hebei Academic Journal (2011)
Online since: June 2013
Authors: Peng Liu, Jian Fen Ma
A Higher Intelligibility Speech-Enhancement Algorithm Peng Liu a, Jianfen Ma b,c College of Computer Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China asxyqliupeng@139.com, bmajianfentyut@126.com cauthor to whom correspondence should be addressed.
The Chinese clean speech signals were taken from the Mandarin Speech Test Materials (MSTMs) database [6].
The Chinese objective evaluation materials contain 60 common disyllabic words, every 15 as a group.
In order to prevent the impact of human memory effect on the results, each subject only listened to the materials at a certain signal to noise and speech processing.
:Speech enhancement by combining statistical estimators of speech and noise[J] in Proceedings of IEEE International Conference on Acoustics, Speech, Signal Processing (2010), p. 4754–4757 [6] ZHANG Hua,WANG Shuo,CHEN Jing et al:The Manda-rin Speech Test Materials (MSTMs): Development and application[J].
Online since: September 2014
Authors: Xiang Yu Li, Fang Yun Lu, Rong Chen, Zhen Yu Zhang, Wen Kai Chen
Numerical Simulation Model and material.
Fig. 1 Conventional design Fig. 2 Improved design This paper uses fluid-solid coupling algorithm of multiple material.
The main advantage of the algorithm is that there is no unit distortion problem, when explosive and fluid material flowing in the Euler unit, and the explosion can be better described through the fluid-solid coupling way to deal with the interaction.The key material types and material properties of shell, fragment and main charge, as well as the parameters of equations of state are listed in Table 1.
Table 1 Input data in the numerical simulation Material Part LS-DYNA material type, material property and EOS input data (unit=cm, g, μs, Mbar) 1020 steel Inner shell *MAT_ELASTIC_PLASTIC_HYDRO_SPALL Outer shell RO G SIGY EH PC FS Skin 7.85 0.618 7.24E-3 0.28 -7.03 0.36 Steel Fragment *MAT_PLASTIC_KINEMATIC RO E PR SIGY ETAN BETA 7.89 2.069 0.3 1.724E-2 0.28 0.36 Aluminized explosive Main charge *MAT_HIGH_EXPLOSIVE_BURN ΡO D PCJ 1.75 0.82 0.3 *EOS_JWL A B R1 R2 OMEG E0 V0 8.71 0.139 4.6 1.15 0.3 0.1 1.0 Initiating mode.
ASCE: Journal Of Aerospace Engineering, (2009) No.22, p.354
Online since: December 2012
Authors: Sabar Derita Hutagalung, S.A. Rezan Sheikh Abdul Hamid, Wan Normiza Wan Mustapha, Nguyen Van Hieu, Khairudin Mohamed, Chan Kok You
Synthesis and Gas Sensing Properties of SnO2 Nanostructures by Thermal Evaporation Wan Normiza Wan Mustapha1,a, Sheikh Abdul Rezan1,b*, Sabar Derita Hutagalung1,c, Nguyen Van Hieu2, Khairudin Mohamed3,a and Chan Kok You3,b 1School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia (USM), 14300 Nibong Tebal Penang, Malaysia. 2ITIMS, Hanoi University of Science and Technology (HUST), Hanoi, Vietnam 3School of Mechanical Engineering, USM, Malaysia.
These nanostructures have wide range of application such as nano-electronics, chemical sensing, catalyst, bio-medicine and composite filler material due to high surface to volume ratio, quantum confinement effect, and the high fraction of chemically similar surface sides[2].
Materials and Methodology The tin powder used in this research has a purity of 99% (Sigma Aldrich).
YAN: ADVANCED MATERIALS VOL. 15 (2003), P. 353-389
SUNKARA: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY VOL. 124 (2002), P. 12288-12293
Online since: September 2017
Authors: Vladimir E. Ovcharenko, E.N. Boyangin, A.P. Pshenichnikov, T.A. Krilova
Krilova1 1Institute of Strength Physics and Materials Science SB RAS, 2/4, Pr.
Introduction Self-propagating high-temperature synthesis (SHS) of intermetallic compounds initiated by thermal explosion of powder mixtures of parent elements is an alternative technological development in producing advanced intermetallic alloys and composite materials for structural and instrumental purposes [1-5].
Research Methods and Materials A high-temperature synthesis of Ni3Al intermetallide under pressure was carried out with the help of a test stand based on an automated hydraulic press equipped with high-frequency generator for heating a steel press-mold until a 3Ni+A powder mixture compact self-ignites (Nickel grain size being 1…3 μm, and that of aluminum being 5…10 μm).
Feng, Combustion synthesis of advanced materials: part I.
Vishnyakova, Some chemical aspects of SHS power compaction, Engineering and Physics Journal, 63 No.5 (1992) 517-524
Online since: September 2011
Authors: Yu Lin Lu, Tao Lu, Li Wang, Zhen Yu Wang, Pei Pei Zhao
Acknowledgements This research is funded by Youth Science and Technology Foundation of Disaster Prevention 201002; Teacher Research Foundation of China Earthquake Administration 20090111 and 20100106.
Materials and Structures, 1998,31:329-334 [3] Patrik Groth, Hans Hedlund.
Materials and Structures. 1998,32:387-392 [4] Jin Keun Kim, Kook Han Kim, Joo Kyoung Yang.
Materials and Structures, 1999,32:673-678 [6] Yun Lee, Myoung-Sung Choi, Seong-Tae Yi, et al.
Modeling the Cooling of Concrete by Piped Water; Journal of Engineering Mechanics; 2009,135(12): 1375-1383
Online since: January 2012
Authors: Robert Schaller, Daniele Mari, Iva Tkalcec-Vaju, Ann Kathrin Maier
In order to analyze the effects of the grain boundaries on the mechanical loss spectrum of Au 118 gold alloys, some parts of the wires were re-melted in order to obtain single crystalline materials by the Bridgman technique.
The mechanical loss measurements were performed in poly- and single-crystalline materials either in isothermal condition as a function of frequency (between 0.004 Hz and 2 Hz) or at fixed frequency as a function of temperature.
In metallic materials, the GBs do not contain any glassy phase.
Conclusions Polycrystalline 18-carat Au 118 gold alloys, containing 21 wt% silver and 4 wt% copper, exhibit a high temperature relaxation peak, which is absent in the single crystalline materials.
Acknowledgments This work was financially supported by the Swiss National Science Foundation.
Online since: September 2012
Authors: Hong Jiang, Sheng Wei He, Lu Zhang, Xue Gang Sun, Wen Zhi Zhao
The conventional compression plates are made of metal materials that have 5-10 times higher modulus than cortical bone.
Fig. 1 Fracture of a bone plate from a patient femur Table 1 Material properties of bone, bone plate and stabilization screw Materials Elastic modulus/GPa Poisson’s ratio Cortical bone Trabecular bone Bone plate Stabilization screw 16.5 1.0 116 116 0.32 0.225 0.33 0.33 A bone fracture is a medical condition in which there is a break in the continuity of the bone.
Table 1 lists material properties of bone, bone plate and stabilization screw.
Dasari, Composites Science and Technology 62 (2003) ,p. 427-435 [2] Suk-Hun Kim, Seung-Hwan Chang, Ho-Joong Jung, Composite Structures 92 (2010), p. 2109-2118 [3] C.R.F.
Ramakrishna, Biomaterials 24 (2003), p. 2661-2667 [6] Seok-Won Park, Seong-Hwan Yoo, Song-Tao An, Composites: Part B 43 (2012) , p. 1101-1108 [7] Semih Benli, Sami Aksoy, Hasan Havitcioglu, Journal of Biomechanics 41 (2008) , p. 3229-3235