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Online since: February 2013
Authors: Rui Wang, Lin Cheng
Preparation and Application of Nano Ce-Zr Mixed Oxides Supported H3PW12O40 in Nitrogen Oxide Capture and Decomposition
Lin Cheng and Rui Wanga
School of Environmental Science & Engineering, Shandong University, Jinan 250100, China
aree_wong@hotmail.com
Keywords: Nano Ce-Zr mixed oxides, H3PW12O40, NOx, Adsorption-decomposition.
Meanwhile, when the particle size of Ce-Zr mixed oxide was reduced, especially when the size decreased to around 100 nm, the material became nanophasic, and would provide more active sites for gas-solid catalysis [11].
Experimental Materials and chemicals.
Programs Foundation 20070422087), Shandong Provincial Research Award Fund for Excellent Young Scientists (2006BS08020) and Shandong Provincial Key Technologies R & D Program (2008GG10006005) are gratefully acknowledged.
Wang, New catalyst systems of heteropoly compounds as functional material for the adsorption-decomposition of NOx, J Fuel Chem and Tech. 37 (2009) 87-92
Meanwhile, when the particle size of Ce-Zr mixed oxide was reduced, especially when the size decreased to around 100 nm, the material became nanophasic, and would provide more active sites for gas-solid catalysis [11].
Experimental Materials and chemicals.
Programs Foundation 20070422087), Shandong Provincial Research Award Fund for Excellent Young Scientists (2006BS08020) and Shandong Provincial Key Technologies R & D Program (2008GG10006005) are gratefully acknowledged.
Wang, New catalyst systems of heteropoly compounds as functional material for the adsorption-decomposition of NOx, J Fuel Chem and Tech. 37 (2009) 87-92
Online since: February 2012
Authors: Xue Qun Zhu, Zai Qiang Huo
Energy and material exchange in the forest ecosystem, transfer from one library to another, and form a series of forest ecological systems.
Parallel computing capacity of the genetic algorithm also plays a key role in solving the complexity of ecosystems.
Thus, although the energy flow of some material is small, it has high quality.
Complex networks in ecosystem is an effective method to study complex ecological phenomenon from the systematic perspective and complex network technology, which reveals the whole emergence and vulnerability of forest ecosystem function by network simulation to material, energy and information flow in an between ecosystem.
PH.D thesis, Systems Design Engineering, University of Waterloo, Waterloo, Ontario, Canada (1984), p.458 [26] Watts D J and Strogatz S H, Nature (1998), 393, p.440-442 [27] Barabási A.
Parallel computing capacity of the genetic algorithm also plays a key role in solving the complexity of ecosystems.
Thus, although the energy flow of some material is small, it has high quality.
Complex networks in ecosystem is an effective method to study complex ecological phenomenon from the systematic perspective and complex network technology, which reveals the whole emergence and vulnerability of forest ecosystem function by network simulation to material, energy and information flow in an between ecosystem.
PH.D thesis, Systems Design Engineering, University of Waterloo, Waterloo, Ontario, Canada (1984), p.458 [26] Watts D J and Strogatz S H, Nature (1998), 393, p.440-442 [27] Barabási A.
Online since: December 2011
Authors: Wen Zhang Huang, Ning Lu
The chemical technology, environmental measures associated with the curing chemistry has become the key of harmless manganese slag treatment.
Experimental Materials.
However, when the ratio was 90%, the initial and final setting time was very long, which could not meet the requirements of practical engineering application; while the ratio was 60%, the initial and final setting time was appropriate.
Calcium silicate hydrate gel material quality had been improved, and the composition was optimized.
Hence, the number of cementitious material was significantly increased, and the interface structure of gel and aggregate were improved.
Experimental Materials.
However, when the ratio was 90%, the initial and final setting time was very long, which could not meet the requirements of practical engineering application; while the ratio was 60%, the initial and final setting time was appropriate.
Calcium silicate hydrate gel material quality had been improved, and the composition was optimized.
Hence, the number of cementitious material was significantly increased, and the interface structure of gel and aggregate were improved.
Online since: March 2021
Authors: Huai Qiu Zhu, Cai Ying Lou, Rong Hui Yuan, Fu Rong Liu, Guo Jun Jiang, Xiang Yu Ye
The as-synthesized catalysts had been investigated by catalytic activity tests, and key improvements were made to BTEX degradations.
Su, Characterization of interfacial behaviour of ortho-positioned diaryl disulfide on silver substrates by surface-enhanced Raman scattering and electroreduction, Materials Chemistry and Physics 235 (2019) 121726
Taguchi, Nickel-doped TiO2 multilayer thin film for enhancement of photocatalytic activity, International Journal of Materials Science and Engineering 7 (2019) 10-19
Su, Characterization of interfacial behaviour of ortho-positioned diaryl disulfide on silver substrates by surface-enhanced Raman scattering and electroreduction, Materials Chemistry and Physics 235 (2019) 121726
Taguchi, Nickel-doped TiO2 multilayer thin film for enhancement of photocatalytic activity, International Journal of Materials Science and Engineering 7 (2019) 10-19
Online since: March 2014
Authors: Yue Dong, Shao Hong Liu, Xiao Dong Li, Ji Guang Li, Xu Dong Sun
Novel Direct Coagulation Casting of Alumina Suspensions using Y3+-ion Releasing Substances as Coagulant
Yue DONG, Xiaodong LI, Shaohong LIU, Ji-Guang LI, Xudong SUN
Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China.
Experimental Procedure Starting Materials.
The viscosity of the suspensions was measured using a Brookfield viscometer (DV-II+Pro, Brookfield Engineering Laboratories, USA).
Experimental Procedure Starting Materials.
The viscosity of the suspensions was measured using a Brookfield viscometer (DV-II+Pro, Brookfield Engineering Laboratories, USA).
Online since: January 2014
Authors: Cheng Fang Sun, Qian Gu, Rui Gao, Yu Jia Peng
Experimental research on seismic performance of pre-damaged RC frame T-beam strengthened with Sprayed BFRP
Rui Gao1, a, Qian Gu1, b, Chengfang Sun2, c and Yujia Peng1, d
1School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan430070, P.R China;
2City College, Dongguan University of Technology, Dongguan523106, P.R.China
agaorui3333@126.com, bguqian218@126.com, c13412969219@139.com, dtmpyj@126.com
Key words: sprayed BFRP; pre-damaged; reinforced concrete(RC) frame T-shape beam; seismic performance
Abstract: This experimental program was designed for investigating the seismic performance and reinforcement effect of pre-damaged RC frame T-beams reinforced with sprayed basalt fiber reinforced polymer (BFRP).
Sprayed FRP rehabilitation can repair and reinforce building structure damaged by earthquake rapidly, and there are many unique advantages: reinforcement material solidify and strengthen fast, low cost, less construction process, short cycle, and light construction equipment.
Now in the field of spraying FRP structural rehabilitation, glass fiber is the chopped fiber researched and applied more, but sprayed GFRP has a certain characteristic of brittle fracture and poor durability; the overall performance of sprayed CFRP is excellent, but reinforcement material cost a lot.
Before spraying, concrete surface dust must be blew off with high pressure air of spray gun, then spraying resin undercoat, after curing spraying chopped BFRP, a ridged aluminum compaction roller is used to force out any entrapped air voids and to work the material into a consistent thickness.
Table 1 Retrofit schemes of RC frame T-beam specimens Specimen Sprayed FRP type Pre-damaged control Thickness of Spraying layer TL-1 - - - TL1-BF1-U BFRP undamaged 4.5mm TL1-BF1-D1 BFRP Δy 4.5mm TL1-BF2-D1 BFRP Δy 7mm The material properties of the basalt fiber and the resin applied to the spraying process in this test are shown in Table 2 and Table 3.
Sprayed FRP rehabilitation can repair and reinforce building structure damaged by earthquake rapidly, and there are many unique advantages: reinforcement material solidify and strengthen fast, low cost, less construction process, short cycle, and light construction equipment.
Now in the field of spraying FRP structural rehabilitation, glass fiber is the chopped fiber researched and applied more, but sprayed GFRP has a certain characteristic of brittle fracture and poor durability; the overall performance of sprayed CFRP is excellent, but reinforcement material cost a lot.
Before spraying, concrete surface dust must be blew off with high pressure air of spray gun, then spraying resin undercoat, after curing spraying chopped BFRP, a ridged aluminum compaction roller is used to force out any entrapped air voids and to work the material into a consistent thickness.
Table 1 Retrofit schemes of RC frame T-beam specimens Specimen Sprayed FRP type Pre-damaged control Thickness of Spraying layer TL-1 - - - TL1-BF1-U BFRP undamaged 4.5mm TL1-BF1-D1 BFRP Δy 4.5mm TL1-BF2-D1 BFRP Δy 7mm The material properties of the basalt fiber and the resin applied to the spraying process in this test are shown in Table 2 and Table 3.
Online since: February 2014
Authors: He Lian Li, Xue Mei Han, Rong Hui Qu, Jia Jun Chen
Desorption Kinetics and Difference in Removal Enhancement of PAHs in Aged Soils by Tween 80
Helian Li1,3, a, Ronghui Qu1,b , Xuemei Han1,c and Jiajun Chen2,d
1 School of Resources and Environment, University of Jinan, Jinan 250022, China
2 Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China
3 Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, Jinan 250022, China
aujn_lihl@163.com, b Rongh_Q@163.com, cstu_hanxm@ujn.edu.cn, djeffchen@bnu.edu.cn
Keywords: Polycyclic aromatic hydrocarbons, Tween 80, desorption kinetics, desorption enhancement, ring number
Abstract.
Materials and Methods Study Site and Sample Collection.
Materials larger than about 0.3 cm were removed.
Materials and Methods Study Site and Sample Collection.
Materials larger than about 0.3 cm were removed.
Online since: December 2014
Authors: Alexey Anatolevich Vereschaka, Sergey Nikolaevich Grigoriev, Natalia Cherkasova, Pavel Filatov
Surface Modification of Broaches from the Powder High Speed Steels Applied to Processing of Aviation Products from Heat-resistant Alloys
GRIGORIEV Sergey1, a, CHERKASOVA Natalia1, b, Filatov Pavel2, c, Vereshchaka Alexey1, d
1Moscow State University of Technology STANKIN, Russian Federation, Moscow, 127994, Vadkovskiy side-street, 1
2Federal State Unitary Enterprise "Gas Turbine Engineering Research and Production Center "SALUT", Russia, Moscow, 105118, Budeny Avenue, 16
ascience@stankin.ru, bn.cherkasova@stankin.ru, c nats-chemnitz@rambler.ru, decotech@rambler.ru
Keywords: Broaching tool, Ion nitriding, Complex hardening, Powder metallurgical high-speed steel, Heat-resistant nickel alloy, Two-stage vacuum-arc discharge
Abstract.
As the practical experience shows, broaching of this group of materials is also followed by high wear rate of the broaching tool which is usually made of high-speed steels (including powder metallurgical ones) [1—3].
In this paper, the influence of the ion nitriding and subsequent wear resistant coating deposition ((Nb, Ti, Al)N) on the material properties of powder metallurgical high-speed steel PM-HSS (with the ultimate bending strength of 2600—3500 MPa, hardness of 66 HRC; Russian analogue is R12M3K5F2-MP) was investigated.
The influence of ion-plasma processing to the structure and material properties of nitrided case were studied using sample parts of 10x10x5 mm size that have been previously heat-treated.
Key Eng.
As the practical experience shows, broaching of this group of materials is also followed by high wear rate of the broaching tool which is usually made of high-speed steels (including powder metallurgical ones) [1—3].
In this paper, the influence of the ion nitriding and subsequent wear resistant coating deposition ((Nb, Ti, Al)N) on the material properties of powder metallurgical high-speed steel PM-HSS (with the ultimate bending strength of 2600—3500 MPa, hardness of 66 HRC; Russian analogue is R12M3K5F2-MP) was investigated.
The influence of ion-plasma processing to the structure and material properties of nitrided case were studied using sample parts of 10x10x5 mm size that have been previously heat-treated.
Key Eng.
Online since: December 2011
Authors: Xi Jun Hu, Xiao Ling Jin, Yue Hua Chen, Qin Xu
Generally, such materials as surface soil, chemical fertilizer, organic castoff, green manure and nitrogen-fixing plant are used to directly improve soil and re-improve the newly-covered soil.
Alternatively, re-hardening of soil may be realized via growth of vegetation roots, concentration & dispersion of nutritive materials, and activity of microorganism[4].
Acknowledgement This paper is sponsored by the key subject in Hunan Province (Garden Plants and Ornamental Horticulture) (Xiang Education General [2006]180) and the scientific research project of Changsha Garden Administration Bureau (No.: 2010003).
Anthony Bradshaw, “Restoration of mined lands——using natural processes,” Journal of Ecological Engineering, vol 8(1997) 255-269
Alternatively, re-hardening of soil may be realized via growth of vegetation roots, concentration & dispersion of nutritive materials, and activity of microorganism[4].
Acknowledgement This paper is sponsored by the key subject in Hunan Province (Garden Plants and Ornamental Horticulture) (Xiang Education General [2006]180) and the scientific research project of Changsha Garden Administration Bureau (No.: 2010003).
Anthony Bradshaw, “Restoration of mined lands——using natural processes,” Journal of Ecological Engineering, vol 8(1997) 255-269
Online since: December 2011
Authors: You Lin Pan, Barry Arkles, Eric Eisenbraun, Alain Kaloyeros
College of Nanoscale Science and Engineering, SUNY Albany, 255 Fuller Road, Albany, NY 12203, USA
aypan@gelest.com; bexecutiveoffice@gelest.com; cEEisenbraun@uamail.albany.edu
dAKalyoeros@uamail.albany.edu
Key words: Long-Chain Organofunctional Silanes, Hydrosilylation, Substition, Reduction, Surface Derivatization, Monolayers, X-ray Photoelectron Spectroscopy, Reflection-Absorption Infrared Spectroscopy
Abstract.A series of organofunctional long-chain alkylfunctional silanes have been synthesized for the purpose of derivatization of micro- and nanoparticles and generation of molecular monolayers and films on the substrates. 11-bromoundecylsilane and 1, 10-disiladecane are evaluated to interact with a variety of clean hydrogenated metal and metalloid including titanium, silicon and silicon dioxide.
Although the bulk properties of materials mainly depend upon the inherent nature and structure, often their surface activities can be tailored by the adsorption or deposition of thin layers of organic molecule.
Textor, European Cells and Materials, 7(2004), 16 4. a.
Although the bulk properties of materials mainly depend upon the inherent nature and structure, often their surface activities can be tailored by the adsorption or deposition of thin layers of organic molecule.
Textor, European Cells and Materials, 7(2004), 16 4. a.