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Online since: August 2014
Authors: Ou Chen Cai
Colloidal fine materials can increase the apparent solubility of low solubility contaminants if those contaminants strongly associate with the colloids, and the colloids minimally interact with the stationary macroparticle phase.
Due to the generally high affinity of HOCs to materials with large surface area, nanoparticles may be of critical importance for the subsurface mobility of HOCs.
TiO2 nanoparticle powder will be purchased from Nanostructured & Amorphous Materials, Inc, with nominal diameters of 15 nm and 50 nm, as reported by the maker.
Ziegler, Transport of engineered nanoparticles in saturated porous media, J.
Colvin, The potential environmental impact of engineered nanomaterials, Nat.
Due to the generally high affinity of HOCs to materials with large surface area, nanoparticles may be of critical importance for the subsurface mobility of HOCs.
TiO2 nanoparticle powder will be purchased from Nanostructured & Amorphous Materials, Inc, with nominal diameters of 15 nm and 50 nm, as reported by the maker.
Ziegler, Transport of engineered nanoparticles in saturated porous media, J.
Colvin, The potential environmental impact of engineered nanomaterials, Nat.
Online since: May 2011
Authors: De Liang Zhang, Yuong Chen, Hong Bao Yu
Chen2,c
1Waikato Centre for Advanced Materials (WaiCAM), School of Engineering, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand
2School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, China
ad.zhang@waikato.ac.nz, bhongbaoy@yahoo.com.cn, cyychen@hit.edu.cn
Key words: titanium aluminide, nanostructure, nanocrystalline, ultrafine structure, mechanical properties, fracture behaviour.
Introduction Among the materials processing/synthesis routes which can be scaled up to industrial scale typical for producing engineering materials and components, powder metallurgy route may be the only applicable route for producing nanostructured or ultrafine structured products in semi-finished forms (bars, billets, plates, sheets etc.) or near-net shaped component forms.
Severe plastic deformation of bulk materials using processes such as equal channel angular pressing/extrusion (ECAP/ECAE) can give ultrafine structure, but can rarely give nanostructure.
The premature fracture of the specimens during room temperature tensile testing prevented the measurement of the true yield strength of the materials.
Due to the large amount of plastic deformation involved, the further processing of TiAl based alloys produced by HEMM and HIP by forging, extrusion and rolling not only shape the materials to the forms required for the final products, but also improve metallurgical quality of the materials.
Introduction Among the materials processing/synthesis routes which can be scaled up to industrial scale typical for producing engineering materials and components, powder metallurgy route may be the only applicable route for producing nanostructured or ultrafine structured products in semi-finished forms (bars, billets, plates, sheets etc.) or near-net shaped component forms.
Severe plastic deformation of bulk materials using processes such as equal channel angular pressing/extrusion (ECAP/ECAE) can give ultrafine structure, but can rarely give nanostructure.
The premature fracture of the specimens during room temperature tensile testing prevented the measurement of the true yield strength of the materials.
Due to the large amount of plastic deformation involved, the further processing of TiAl based alloys produced by HEMM and HIP by forging, extrusion and rolling not only shape the materials to the forms required for the final products, but also improve metallurgical quality of the materials.
Online since: October 2008
Authors: Xiang Lin Gu, Li Xue Jiang, Shi Ju Zheng, Wei Ping Zhang
Material Properties.
Acknowledgement The financial support for this project from the National Key Technology R&D Program (Grant No.
Journal of Structural Engineering, ASCE, Vol. 113(1987), p. 1850 [2] H.E.Zerbe and A.J.Durrani: Seismic Response of Connections in Two-Bay Reinforced Concrete Frame Subassemblies with a Floor Slab.
Journal of Structural Engineering, ASCE, Vol. 115(1989), p. 1 [4] B.M.Shahrooz and S.J.Pantazopoulou: Modeling of Slab Contribution in Frame Connections.
Journal of Structural Engineering, ASCE, Vol. 118(1992), p. 2475 [5] S.J.Pantazopoulou and C.W.French: Slab Participation in Practical Earthquake Design of Reinforced Concrete Frames.
Acknowledgement The financial support for this project from the National Key Technology R&D Program (Grant No.
Journal of Structural Engineering, ASCE, Vol. 113(1987), p. 1850 [2] H.E.Zerbe and A.J.Durrani: Seismic Response of Connections in Two-Bay Reinforced Concrete Frame Subassemblies with a Floor Slab.
Journal of Structural Engineering, ASCE, Vol. 115(1989), p. 1 [4] B.M.Shahrooz and S.J.Pantazopoulou: Modeling of Slab Contribution in Frame Connections.
Journal of Structural Engineering, ASCE, Vol. 118(1992), p. 2475 [5] S.J.Pantazopoulou and C.W.French: Slab Participation in Practical Earthquake Design of Reinforced Concrete Frames.
Online since: November 2012
Authors: Ya Ting Zhang, Chun Li Zheng, Yue Qi
Microbial degradation of nitrobenzene by immobilized cells of Micrococcus luteus
Yue Qi1, Chunli Zheng1*, Yating Zhang2*
1*School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2*College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
1*Telephone: +86 29 82668572, Fax: +86 29 82668572, E-mail address: clzheng@mail.xjtu.edu.cn
2* E-mail address: isyating@163.com
Keywords: Micrococcus luteus; nitrobenzene; degradation; immobilization; polyurethane foam
Abstract: Micrococcus luteus Z3 was immobilized in polyurethane foam and its ability to degrade nitrobenzene was investigated.
In this paper polyurethane foam (PUF) was used as the carrier material for immobilization.
Materials and Methods 2.1.
Acknowledgment This work was financially supported by the Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), Dalian University of Technology.
In this paper polyurethane foam (PUF) was used as the carrier material for immobilization.
Materials and Methods 2.1.
Acknowledgment This work was financially supported by the Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), Dalian University of Technology.
Online since: July 2012
Authors: Zhe Wang, Jing Jing Xiao, Yang Yang
Trajectory Planning of Knot-tying Manipulation in Surgery
Xiao Jing-jing, Yang Yang and Wang Zhe
School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
E-mail:yang_mech@buaa.edu.cn
Keywords: knot-tying; trajectory planning; master-slave robot.
Regarding to the novel suture materials, like there are corneal suturing nails on the basis of shape memory alloy[11], there are also self knot-tying sutures[12] made of shape memory polymers, which provide an novel approach in tying a knot in endoscopic surgery under the right stress.
As the experimental setup such as the suture material and knot-tying target are not standard, there still much work to be done in the future.
“Twisting Knot Tying Method of Suture-A Novel Method for Robotic Knot Tying”. 2007 IEEE/ICME International Conference on Complex Medical Engineering. pp.87-91
Chinese Journal of Mechanical Engineering, 2010, 46(5), pp. 105-109
Regarding to the novel suture materials, like there are corneal suturing nails on the basis of shape memory alloy[11], there are also self knot-tying sutures[12] made of shape memory polymers, which provide an novel approach in tying a knot in endoscopic surgery under the right stress.
As the experimental setup such as the suture material and knot-tying target are not standard, there still much work to be done in the future.
“Twisting Knot Tying Method of Suture-A Novel Method for Robotic Knot Tying”. 2007 IEEE/ICME International Conference on Complex Medical Engineering. pp.87-91
Chinese Journal of Mechanical Engineering, 2010, 46(5), pp. 105-109
Online since: July 2013
Authors: Yue Feng Su, Yan Bang Wang, Xiao Dong Zhang, Wen Sheng Deng
Research on simulation of Fischer-Tropsch synthesis based on virtual assembly
Yanbang Wang1a , Yuefeng Su2b, Xiaodong Zhang3c, Wensheng Deng*d
1School of Chemical Engineering and Environment, Beijing Institute of Technology,
NO 5, South Zhongguancun Street, HaiDian District, Beijing, China
awangyanbang1987@163.com, bsuyuefeng@163.com, czhangxiaodong0920@163.com
ddwsss@163.com.
In our study, virtual assembly technology is introduced, while the simulative chemical process can be selected independently.This study will have a wide application in the chemical engineering experiment teaching and training, and it will be of significance to develop the 3D chemical process simulation technology.
Fischer-Tropsch synthesis (FTS) is the key reaction of indirect coal liquefaction.
Material data transfers from one device into the next device by the internal and external datatransfer.
[4] Yong H K, Ki-Won Junc, Hyunku J, et al:Chemical Engineering Journal. 2009,155 427-432
In our study, virtual assembly technology is introduced, while the simulative chemical process can be selected independently.This study will have a wide application in the chemical engineering experiment teaching and training, and it will be of significance to develop the 3D chemical process simulation technology.
Fischer-Tropsch synthesis (FTS) is the key reaction of indirect coal liquefaction.
Material data transfers from one device into the next device by the internal and external datatransfer.
[4] Yong H K, Ki-Won Junc, Hyunku J, et al:Chemical Engineering Journal. 2009,155 427-432
Online since: October 2010
Authors: Dieter Hofmann, Andreas Lendlein, Maria Entrialgo, Jürgen Reiche, Karl Kratz
A major limitation of established degradable implant materials is the fact, that their degradation behavior can not be reliably predicted applying existing experimental methodologies.
Introduction Biodegradable polymers, like aliphatic poly(a-hydroxy esters) have found several application as implant materials over the last decades.
Surgical sutures, fracture and craniomaxillofacial fixations and materials in controlled drug delivery systems are prominent examples [1-5].
In biomaterial-based Regenerative Therapies such as tissue engineering approaches or stimulation of endogenous regeneration degradable polymers can be applied as temporary substitutes for the extracellular matrix (ECM) [6,7].
Here the below described combined knowledge-based approach can be useful, which is composed of two key elements.
Introduction Biodegradable polymers, like aliphatic poly(a-hydroxy esters) have found several application as implant materials over the last decades.
Surgical sutures, fracture and craniomaxillofacial fixations and materials in controlled drug delivery systems are prominent examples [1-5].
In biomaterial-based Regenerative Therapies such as tissue engineering approaches or stimulation of endogenous regeneration degradable polymers can be applied as temporary substitutes for the extracellular matrix (ECM) [6,7].
Here the below described combined knowledge-based approach can be useful, which is composed of two key elements.
Online since: January 2010
Authors: Jilt Sietsma, Maria Jesus Santofimia, Lie Zhao, Yoshiki Takahama
Sietsma
2,d
1Materials Innovation Institute (M2i), Mekelweg 2, 2628CD Delft, The Netherlands
2
Department of Materials Science and Engineering, Delft University of Technology, Mekelweg 2,
2628CD Delft, The Netherlands
3
Instituto Madrileño de Estudios Avanzados en Materiales (IMDEA-Materiales), E.
Scheme of the quenching and partitioning process Carbon Partitioning during the Partitioning Step The partitioning of carbon from the martensite to the austenite is the key phenomenon of the Q&P process.
Garcia de Andres: Materials and Design.
De Cooman, in: Materials Science and Technology (MS&T), Detroit, Michigan (2007) p. 73 [9] M.J.
Clarke, in: Solid-to-Solid Phase Transformations in Inorganic Materials, Phoenix, AZ (2005) p. 535
Scheme of the quenching and partitioning process Carbon Partitioning during the Partitioning Step The partitioning of carbon from the martensite to the austenite is the key phenomenon of the Q&P process.
Garcia de Andres: Materials and Design.
De Cooman, in: Materials Science and Technology (MS&T), Detroit, Michigan (2007) p. 73 [9] M.J.
Clarke, in: Solid-to-Solid Phase Transformations in Inorganic Materials, Phoenix, AZ (2005) p. 535
Online since: March 2015
Authors: Xun Yong Jiang, Dian Wen Feng
Structure Changes of Coating on NiTi Alloy Prepared by Micro-arc Oxidation in Na2SiO3 Electrolyte
Dianwen Fenga and Xunyong Jiangb*
School of material science and engineering, Tianjin University of technology, Tianjin, 300384, china
afengdianwen08@163.com, bjiangxunyong@tjut.edu.cn, to whom correspondence should be addressed
Keywords: Micro-arc oxidation, NiTi, Na2SiO3, Structure changes.
Materials and Methods The NiTi alloy with composition of Ti 49.5at% and Ni 50.5at% (Purchased from Northwest Institute for Non-ferrous metal Research, china) was cut into rectangular pieces (sample size 10 mm×10 mm ×2 mm).
Wayman (Eds),shape memory materials, Cambridge University press, Cambridge, uk, 1998, pp 267-281
Z., etal, Journal of Materials Science-Materials in Medicine 2012, 23 (12)
Proceeding of Fifth China National Conference on Functional Materials and Applications 2004: 2355
Materials and Methods The NiTi alloy with composition of Ti 49.5at% and Ni 50.5at% (Purchased from Northwest Institute for Non-ferrous metal Research, china) was cut into rectangular pieces (sample size 10 mm×10 mm ×2 mm).
Wayman (Eds),shape memory materials, Cambridge University press, Cambridge, uk, 1998, pp 267-281
Z., etal, Journal of Materials Science-Materials in Medicine 2012, 23 (12)
Proceeding of Fifth China National Conference on Functional Materials and Applications 2004: 2355
Online since: January 2014
Authors: Jun Zhang, Jia Xue Zhao
An Inquiry of Teaching Methods Based on the Psychological Needs of Comfort in Small Architectural Space
Jun Zhang 1,2, a, Jiaxue Zhao 1,b
1 School of Civil Engineering , Northeast Forestry University
2 School of Architecture, Harbin Institute of Technology
azhangjunzhaojiaxue@126.com, b644243315@qq.com
Keywords: Small Architectural Space, Psychological Needs, Sense of Comfort
Abstract.
Choice of Decorative Materials.
In the curriculum of design, teachers let the Students should grasp the properties of a variety of common decorative materials, and assume a scene and experience it personally.
Teachers should guide students to establish a correct understanding of materials, and different materials’ dominant trait in different types of architectural space.
Tadao Ando loves to use exposed concrete as a decorative materials in his design works, the very famous Church of Light is a typical example.
Choice of Decorative Materials.
In the curriculum of design, teachers let the Students should grasp the properties of a variety of common decorative materials, and assume a scene and experience it personally.
Teachers should guide students to establish a correct understanding of materials, and different materials’ dominant trait in different types of architectural space.
Tadao Ando loves to use exposed concrete as a decorative materials in his design works, the very famous Church of Light is a typical example.