Search results

Materials and Methods Statistically analyze the concentration of pollutants data from June 5, 2000 to December 31, 2008, a total of 3,113 days, API index and simultaneous meteorological data including temperature, precipitation, air pressure and wind speed, etc as well as the timing and frequency of dust storms.
Journal of Lanzhou University (Natural Science),2000，36（6）：118-121。
Journal of Lanzhou University (Natural Science) 2001，37(4):133-139
Journal of Lanzhou University (Natural Science),1997,33(3):97-105
Science of the Total Environment, 2004, 320:163-176

China social sciences 1,58－71
The Energy Journal. 1992, 13 (4): 161 - 177
[27] Zhouxin. management review, 2010 (6), 22:17-24 [28] Wei Benyong. journal of Beijing normal university (natural science edition), 2009 (8) : 413-419 [29] Wei Benyong. geographical science, 2009 (10), 5：634-640 [30] QiYe.
Chinese academy of sciences, Shanghai metallurgical; Materials physics and chemistry (professional) doctoral dissertation ,2000 year [47] Ning XueMin. ecological economy, 2009 (11): 51--54, 96
China soft science, 2010 (5): 12-19, 80.

Overall revolution and twist of the FBG with core material.
is central plane of the bent core material.
Acknowledgements This research is joint sponsored by National Science Foundation under the Grant No 50475182 and Innovation Gourp Project for Shanghai Municipal Education Commission.
Journal of Applied Sciences, 2003, 21 (3):258-262 [10] LIU Gang; KE Ying-lin.
Journal of Zhejiang University(Engineering Science), 2004, 38 (6):687-690(In Chinese)

In the process of production, long-time and high-temperature environment will lead to the increase of internal stress in the chip, which will increase the fragmentation rate of ultra-thick epitaxial materials in the later process.
Materials Science Forum. 457-460, (2004) 565
Klein, Identification of Defects Limiting the Carrier Lifetime in n-Epitaxial Layers of 4H-SiC, Materials Science Forum Vols. 645-648 (2010) pp 193-198
[8] Naoki Kaji, Hiroki Niwa, Jun Suda and Tsunenobu Kimoto，Ultrahigh-Voltage (> 20 kV) SiC PiN Diodes with a Space-Modulated JTE and Lifetime Enhancement Process via Thermal Oxidation, Materials Science Forum. 778-780, (2014)832-835
Palmour, Improvement of Minority Carrier Lifetime in Thick 4H-SiC Epi-layers by Multiple Thermal Oxidations and Anneals , Materials Research Society 1538 (2013)329-333

The materials in the EDM process are removed by electrical discharges occurring between an electrode and a workpiece immersed in a dielectric fluid.
The total specifications of workpiece and tool materials are shown in tables 1 and 2.
World Academy of Science, Engineering and Technology 52 2009
[3] C.Gao, Z.Liu,” A study of ultrasonically aided micro-electrical-discharge machining by the application of work piece vibration,” Journal of Material Processing Technology139, 2003, pp. 226-228
[5] C.Gao, Z.Liu,” A study of ultrasonically aided micro-electrical-discharge machining by the application of work piece vibration,” Journal of Material Processing Technology139, 2003, pp. 226-228

Introduction One reason for the premature failure of asphalt pavement structure is due to rainwater through pavement seams,cracks and segregation of the road into the internal structure,this will form hydrodynamic pressure under vehicle load and scour pavement structure then reduce the performance of the pavement[1,2].To eliminate early water damage,at home and abroad in the design of the pavement structure set internal drainage system[3,4].At present commonly used permeable base materials are cement treated aggregate and porous cement[5].Porous concrete also be called macroporous concrete or porous lean concrete.As a new base drainage material,compared with cement treated aggregate,porous concrete has higher cement content,none or less fine aggregate,higher strength and permeable ability[6].To study the construction technology of porous concrete permeable base and the using effect,the paper is based on southwest beltway Luohebei interchange ramp project in Luoyang,Henan,which paves test
The pavement structure and drainage base edge structure design as shown in Figure 1.Materials in gullies and base are the same,the are all porous concrete and with same mix.The longitudinal manifold using 10 cm in diameter of the strong permeable tube,and its longitudinal grade should be same with the route longitudinal gradient,not less than 0.25%.At the same time, PVC horizontal pipe spacing of about 50m settings without holes, the diameter is same with water collecting pipe,and water collecting pipe gradient should not less than 5%.The tack coat and prime coat use the same material with production sections.And set up seal coat between porous concrete permeable base and cement stabilized soil.
Fig. 1 Schematic diagram of pavement structure and permeable base’s drainage system’s edge structure Mix design of porous concrete Specifications of raw material Aggregate On account of porous concret with low cement content,and it belongs to the open graded skeleton void structure,The entire structure’s weakest strength depends on the the bonding strength between cement and aggregates.So the aggregate shall be hard and clean, crushing value should below 30%,mud content is within 1%,and the acicular content is not more than 15%.In the test section The aggregates under construction are into 10 ~ 20mm and 5 ~ 10mm two section,these technical indexes as indicated in Table 1, and meet the requirements of specification.
In actual construction,the mix should be adjusted according to the material water content.
[5] Zhen Munian,Wang Bingang,Hu Changshun.Composition design and pavement performance of porous concrete.Journal of chang 'an university（JCR Science Edition）[J]，2003, 23(4):6-10 [6] Zhen Munian,Xu Jiangping,Wang Bingang.Construction and detection of porous concrete permeable base.Highway[J],2003(4):56-61 [7] Luoyang Southwest Beltway LLC etc.porous concrete permeable base applied research in High grade highway asphalt pavement[R].Henan:zhengzhou,2005.

Apart from fly ash, a variety of materials, such as clay, silica fume, and bottom ash, could be used as pozzolanic materials which react with both the alkaline activator.
Materials and Methodology Class F fly ash is normally produced by the combustion of heavier, older anthracite and bituminous coal.
International Journal of Civil Engineering and Technology. 7. 81-99
Construction and Building Materials. 79. 10.1016/j.conbuildmat.2015.01.043
Material Science (2011)

Fang, Journal of Mechanical Design 131 (2009): 061015-9 [2] M.
Kahraman, Journal of Mechanical Design 124 (2002): 501-510 [5] M.
Duzcukoglu, Materials & Design 30 (2009): 1060-1067 [8] F.
Fang, Journal of Mechanical Design 119 (1997): 120-126 [15] F.
Singh, Journal of Sound and Vibration 146 (1991): 135-156

These materials include carbon nanostructures and graphene [8, 9].
Materials and Methods The nanotubes "Taunit" or "Taunit-M" (0.5-10 wt.%) or graphene (0.2-6 wt.%) may be used as the carbon nanostructures applied for the modification.
Fig. 3 demonstrates the bench for investigating the characteristics of the heat exchangers based on the different materials.
Geim, Graphene: status and prospects, Science, 324(5934) (2009) 1530-1534
Rao, Experiment study of oscillating heat pipe and phase change materials coupled for thermal energy storage and thermal management, Int.

Lingang New City, Shanghai 201306, China 2College of Ocean Science and Engineering, Shanghai Maritime University, 1550 Haigang Av.
Material and Experimental procedure 2.1.
,"Microstructure and tensile properties of high strength duplex ferrite-martensite (DFM) steels", Materials science & engineering 466 (1–2): 123–133, doi: 10.1016/j.msea.2007.02.042
Talbot, Handbook of Corrosion Science and Technology, 2nd edition, Copyright CRC Press/ Taylor & Francis Group LLC,2007 [5] Fallahi, A.
"Microstructure-Properties Correlation of Dual Phase Steels Produced by Controlled Rolling Process" Journal of material science & technology 18 (5): 451–454