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Online since: January 2009
Authors: Feng Xing, Hui Yin, Chong Wang
Experimental studies on the volume change of the super high strength and high performance concrete Feng Xing1,a, Hui Yin 1,b, Chong Wang 2,c 1 Department of Civil engineering, The key Lab on durability of civil engineering in Shenzhen, Shenzhen University, Shenzhen, Guangdong, 518060 2 Chongqing University, Chongqing, 400045 a mail: xingf@szu.edu.cn, bmail:yinhui515@126.com, cmail:wangch@yahoo.com.cn Keywords: volume change, shrinkage, curing condition, binder-aggregate ratio, super high strength concrete, high performance concrete Abstract: Volume change of super high strength and high performance concrete with different binder-aggregate ratios and different curing conditions were investigated in this paper, and the volume changes of cement paste and mortar were also tested.
Experimental 2.1 Materials The raw materials of the concrete that used in this study contained Ordinary Portland cement(C), the grade was 525; Fine aggregate(S), Medium sand, F.M2.40; Water(W); Coarse aggregate(G), Limestone crushed stone; Silica fume(SF); Slag(SL); Limestone powder(LP); Super plasticizer(SP), Amino-silicate type super plasticizer, water reducing ratio was 32%.
Online since: October 2014
Authors: Hong Ling Wang, Ting Ru Wu, Shi Wen Jiang, Dan Dan Liu, Fei Wei
Optimization of Extraction of Tannins from Banana Peel Using Response Surface Methodology Tingru Wu1,a, Hongling Wang*2,b, Shiwen Jiang3,c, Dandan Liu4,d Fei Wei5,e 1-5Life Engineering College of Shenyang Institute of technology, Fushun 113122 PR, China; a351868272@qq.com,blovelingling.1314@163.com,c934115603@qq.com,d956117562@qq.com, e352596961@qq.com Key words: tannin; banana peel; response surface methodology; optimization Abstract: Response surface methodology (RSM) was employed to optimize the extraction conditions of tannins from banana peels.
Materials and methods Materials Fresh bananas were purchased from farmers market; Escherichia coli, Staphylococcus, Rhizopus sporangia, Penicillium and Saccharomycetes were all preserved in our laboratory; All the chemicals and reagents were obtained commercially and were of analytical grade.
Transactions of the Chinese Society of Agricultural Engineering. 2003,19(2): 186-189.
Online since: May 2011
Authors: Jia Ping Liu, En Li
Analysis on Non-Balance Insulation in Lhasa En Li1, a, Jiaping Liu2, b 1No.182 mailbox, Xi’an University of Architecture and Technology, Xi’an, China, 710055 2Architecture School, Xi’an University of Architecture and Technology, Xi’an, China, 710055 alien801@gmail.com, bliujiaping@xauat.edu.cn Key words: Solar Radiation; Periodic Heat Transfer; Typical Indoor Thermal Environment; Non-Balance Insulation; Limited Overall Heat Transfer Coefficient.
Table 3 Wall configuration Material (from indoor to outdoor) Thermal Residence [m2·k)/W] Heat Storage Coefficient [MJ/m2] Heat Storage Index D 1.
And the key point of this paper is on the compensation of solar radiation for heating energy consumption in winter, the solar radiation in normal direction is the only element to be calculated here. 2.
Trigonometric function curve fitting The patterns of outdoor temperature and solar radiation can be realized as cyclic variation if it is for engineering application with middle accuracy.
Online since: August 2013
Authors: Miao Zhang, Wen Hua Song, Zhen Chen, Qing Gong Li
Introduction Dangerous chemical storage tank farm has high fire risk because of the stored material with fire explosion properties and large storage capacity, in the event of accident, not only results in great hazards, but also directly threatens the personal safety and pollutes the environment, causes huge economic losses.
Acknowledgment This work is supported by the National Natural Science Foundation of China (No. 50974096), Tianjin Application Basis and Advanced Technology Research Program Key Projects (No.10JCZDJC25000), and Tianjin Science and Technology Support Program Key Projects (No.10ZCGYSF01600).
Journal of Fire Protection Engineering,2003 (13):11-361
Online since: October 2014
Authors: Izua J. Alaniz-Ortez, Thomas Hartmann
Alaniz-Ortez 2b 1 University of Nevada – Las Vegas, Department of Mechanical Engineering, 4505 S.
Technetium-99 is a key radioisotope from a nuclear waste perspective because of its long half-life (t1/2= 2.13x105 years) and its abundance in used nuclear fuel.
As such, Tc-99 is considered a key element in UNF separation strategies such as UREX+, for isolation and encapsulation in solid waste forms for storage in a nuclear repository [1].
Despite the fact of large inner surface and insufficient sintering of this sub-optimal ceramic, the corrosion resistance of porous Nd2Tc2O7 pyrochlore material is noticeably better than the Tc-99-containing LAWE4 type borosilicate glass, and far better Tc-99 retention was observed combined with optimal waste loading.
Benedict, Chap 11: Nuclear Fuel Reprocessing, in Nuclear Engineering Handbook, Ed.
Online since: April 2015
Authors: Wei Ping Fang, Yao Yong Yi, Feng Mei Liu, Zhen Hua Deng, Zheng Lin Liu
A typical characteristic peak of amorphous material was observed in the XRD pattern.
Therefore advanced joining technology is necessary to join ceramics together for their engineering applications [1].
Obviously, a diffuse diffraction peak at 2θ = 42.7° can be observed in the curve a, which is a typical characteristic peak of amorphous material.
The main results are summarized as follows: (1) The amorphous Cu-35Ti-12Ni alloy prepared by rapid quenching method in this paper is a typical amorphous material, with only a small portion of crystal phase.
Acknowledgments The authors greatly appreciate the financial support from Guangdong Province Key Laboratory Project (2012A061400011) and the Science and Technology Project in Guangzhou the International Cooperation in Science and Technology Special Program (2012J5100046).
Online since: July 2015
Authors: Xavier Sauvage, Yana Nasedkina
Processing of UFG materials for applications as structural materials has been a very active research field during the past 20 years.
Poulsen, Materials today 10 (2007) 24 [20] R.
Trans. 1 (1970) 465 [41] Jingtao Wang, Suk-Bong Kang, Hyoung-Wook Kim, Materials Science and Engineering A 383 (2004) 356–361 [42] J.
Series: Materials Science and Engineering 63 (2014) 012173 [48] X.
Mater 16 (2014) 1000-1009 [74] Kaveh Edalati, Reza Miresmaeili, Zenji Horita, Hiroshi Kanayama, Reinhard Pippan, Materials Science and Engineering A 528 (2011) 7301– 7305 [75] P.
Online since: January 2011
Authors: Bao Qi Zuo, Rong Liu, Feng Zhang, Huan Xiang Zhang
EDC-Crosslinked Electrospun Silk-Fibroin Fiber Mats Rong Liu1, a, Feng Zhang1, b, Baoqi Zuo1, 2, c, Huanxiang Zhang3, d 1College of Textile and Clothing Engineering, Soochow University, Suzhou, 215006, China 2National Engineering Laboratory for Modern Silk, Soochow University, 215123, China 3Department of Cell Biology, Medical College of Soochow University, Jiangsu Key Laboratory of Stem Cell Research, Suzhou 215123, P.R.
Recently, Silk fibrion nanofibers are used in various fields such as in biomedical, electrical and textile applications that includes tissue-engineered scaffolds, wound dressings and drug delivery systems because of their remarkable properties i.e., high specific surface area, increased strength and surface energy and enhanced thermal and electrical conductivity [2, 3].
The tensile strength measurements were then implemented using the instron material testing machine (Instron 3365, America) with a deformation rate of 10 mm/min and the gauge length was set at 20 mm.
The water stability and excellent tensile properties of the crosslinked SF nanofiber could be used in a variety of biomedical applications, such as tissue-engineered scaffolds, wound dressings and drug delivery systems.
Online since: July 2011
Authors: Jia Bing He, Zhen Yu Yang, Wu Ji Jiang
Functionality is one of key elements in TRIZ that used to build models showing how a system works, as well as how a system creates benefits, harmful effects, and costs.
Concept Design is proposed by Palh & Beitz in its book "Engineering Design" in 1984.
Another problem is that friction wheel maybe soon wear out, so appropriate material should be select.
References [1] Artobolevskii, I.I., Mechanisms in Modern Engineering Design, MIR Publishers.
Engineering Design[ M].
Online since: August 2013
Authors: Ji Hua Wang, Yuan Yuan Fu, Gui Jun Yang, Hai Kuan Feng
Comparison of three regression methods for the winter wheat biomass estimation using hyperspectral data Fu Yuanyuan1, 2, 3, a, Wang Jihua1, 2, 3, b, Yang Guijun1, 2, Feng Haikuan1, 2 1Beijing Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; 2National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China; 3Institute of Applied Remote Sensing & Information Technology, Zhejiang University, Hangzhou 310029, China aemail: fyy0201@163.com, bemail: wangjh@nercita.org.cn Keywords: winter wheat biomass; spectral transformation; partial least squares regression; principal component regression; stepwise multiple linear regression; Abstract.
Material The study site is located in Tongzhou district and Shunyi district, Beijing, China.
Acknowledgement This work was supported in part by the State Key Basic Research and Development Program (2011CB311806), the National Natural Science Foundation of China (41271345), the National High Technology Research and Development Program of China (2013AA102303), the Beijing Municipal Talents Training Funded Project (2012D002020000007), the Special Fund for Agro-scientific Research in the Public Interest (201303109).
Estimating grassland biomass using SVM band shaving of hyperspectral data [J].Photogrammetric Engineering & Remote Sensing , 2007,73(10):1141-1148
Hyperspectral imaging for nondestructive determination of some quality attributes for strawberry [J].Journal of Food Engineering, 2007, 81(1):98-107
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