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Online since: October 2004
Authors: Jose Manuel Prado, V.G. García, Jose María Cabrera
Nevertheless
few of them report real material parameters and in any case the computational time makes them
unviable for any industrial simulation process.
However, experimental deviations in copper [4] and other materials showed that a multiple peak behavior could refine an initial grain size, thereby suggesting the need for an improved criterion.
Other models that do predict multiple peak DRX do not use real materials.
Jonas: Metal Science, Vol. 17, December (1983), pp. 609
Kocks: Journal of Eng.
However, experimental deviations in copper [4] and other materials showed that a multiple peak behavior could refine an initial grain size, thereby suggesting the need for an improved criterion.
Other models that do predict multiple peak DRX do not use real materials.
Jonas: Metal Science, Vol. 17, December (1983), pp. 609
Kocks: Journal of Eng.
Online since: August 2006
Authors: I.C. Howard, R.M. Andrews, J.R. Yates, S.H. Hashemi
(a) (b) (c) (d)
Figure 3- Load history captured by oscilloscope for full size Charpy test specimen 6
Material properties
The material under investigation was X100 grade gas pipeline steel (36" O.D×19mm W.T).
The preliminary results from this research suggest that correction factors of at least 1.3 to 1.4 (140J/112J for sub-sized specimen, 279J/196J for full size specimen) may be required for extrapolating the semi-empirical relations calibrated on less tough pipeline material to calculate the Charpy toughness for crack arrest in X100 pipeline steel.
This is because of the high initiation energy for tougher pipeline steels which has not been accounted for in the predictive models tuned on lesstough materials (with less crack initiation energy).
Niinomi, Journal of Testing and Evaluation, Vol.21, No.3, (1993), pp. 145-153 [8] T.
Pineau, Elsevier Science, 2002
The preliminary results from this research suggest that correction factors of at least 1.3 to 1.4 (140J/112J for sub-sized specimen, 279J/196J for full size specimen) may be required for extrapolating the semi-empirical relations calibrated on less tough pipeline material to calculate the Charpy toughness for crack arrest in X100 pipeline steel.
This is because of the high initiation energy for tougher pipeline steels which has not been accounted for in the predictive models tuned on lesstough materials (with less crack initiation energy).
Niinomi, Journal of Testing and Evaluation, Vol.21, No.3, (1993), pp. 145-153 [8] T.
Pineau, Elsevier Science, 2002
Online since: June 2011
Authors: Min Gao, Guang Long Wang, Hui Li
More and more nanometer materials are being developed, and presenting a great application foreground in biology, medicine, national defense and daily life[1-3].
Up to now, most researches of nanometer technique are only focus on developing nanophase materials and nanometer device with high sensitivity or high performance, powering them can still be challenging.
Materials Today.
Science.
Journal of Electroceramics.
Up to now, most researches of nanometer technique are only focus on developing nanophase materials and nanometer device with high sensitivity or high performance, powering them can still be challenging.
Materials Today.
Science.
Journal of Electroceramics.
Online since: July 2011
Authors: Miao Miao Gui, Ming Zi Gong, Jun Zhi Peng, Chong Sheng Zeng
Effect of stone dust and MB value for manufactured sand on workability of self-compacting concrete and model analysis
GUI Miaomiao1, 2, a, ZENG Chongsheng2, b, Gong Mingzi2, c, Peng Junzhi2,d
1 College of Materials Science and Engineering,Tongji University,Shanghai,200092,China
2Xiamen Academy of Building Research Group Co, .LTD, XiaMen361004, China;
amututu@126.com,b82888044@qq.com, c573212643@qq.com, djzpeng76@126.com
Key words: manufactured sand; MB; stone dust; self-compacting concrete; model
Abstract.
Experimental details Materials In the study, Ordinary Portland cement (P.O 42.5), fly ash (FA, Class II) and Ground blast furnace slag (S95) were used as binder in the mix proportions.
References [1] Jian Zheng Wu, Shi Lian Fu and Sun Zhen Ping:Journal of Building Material Vol. 10 (2007), p. 154–160, in Chinese
[4] Ilker Bekir Topcu,Turhan Bilir and Tayfun Uygunglu:Construction and Building Materials, Vol. 23(2009), p. 1947–1953
Experimental details Materials In the study, Ordinary Portland cement (P.O 42.5), fly ash (FA, Class II) and Ground blast furnace slag (S95) were used as binder in the mix proportions.
References [1] Jian Zheng Wu, Shi Lian Fu and Sun Zhen Ping:Journal of Building Material Vol. 10 (2007), p. 154–160, in Chinese
[4] Ilker Bekir Topcu,Turhan Bilir and Tayfun Uygunglu:Construction and Building Materials, Vol. 23(2009), p. 1947–1953
Online since: June 2010
Authors: Yong Feng Li, An Ying Jiao, Xiao Ye Liu, Zi Rui Guo
Materials and Methods
CSTR reactor
1.waste water box 2.feed pump 3.reactor 4.agitator 5.biogas meter 6.water lock
Fig.1 Schematic diagram of the CSTR reactor for biohydrogen production from molasses
wastewater
A 10L continuous stirred-tank reactor (CSTR ZL98240801.3) with an effective volume of 5.4
L which could isolate gas-solid-liquid very well was used in this study (Fig.1).
Results illustrate that the anaerobic bacteria can degrade organic materials effectively in wastewater at shorter HRT.
Effect of OLR on the bio-hydrogen production and pH In the malasses as raw materials remarkably lead to the variation in characteristics of wastewater and thus no corresponding linear relationship between HRT and OLR existed.
International Journal of Hydrogen Energy 31 (2006) 1306-1313 [9] Water quality-Determination of the chemical oxygen demand-dichromate method GB/T11914-89.
Beijing: China Environmental Science Press; 1989. p. 280-3
Results illustrate that the anaerobic bacteria can degrade organic materials effectively in wastewater at shorter HRT.
Effect of OLR on the bio-hydrogen production and pH In the malasses as raw materials remarkably lead to the variation in characteristics of wastewater and thus no corresponding linear relationship between HRT and OLR existed.
International Journal of Hydrogen Energy 31 (2006) 1306-1313 [9] Water quality-Determination of the chemical oxygen demand-dichromate method GB/T11914-89.
Beijing: China Environmental Science Press; 1989. p. 280-3
Online since: September 2016
Authors: Alexander Pisch, Marco Agnelli, Bruno Huet, Vincent Briaud, Elodie André
Carbonation reactions clearly illustrate this phenomenon, as can be shown by the following equation using wollastonite (CaSiO3) as starting material:
1 CO2 (g)+1 CaSiO3 (s)=1 CaCO3(s)+1 SiO2 (am) (1)
Recent attempts are made to emulate natural processes by producing calcium carbonate cement derived from the combination of seawater, calcium, and magnesium with carbon dioxide [2].
Materials and methods Materials.
International Journal of Sustainable Built Environment, 1(2) (2013) 194-216
Science 305(5686) (2004), 968–972
Construction and Building Materials 111 (2016) 63–71.
Materials and methods Materials.
International Journal of Sustainable Built Environment, 1(2) (2013) 194-216
Science 305(5686) (2004), 968–972
Construction and Building Materials 111 (2016) 63–71.
Online since: March 2015
Authors: Zhi Dong Guan, Chuang Zhao, Xia Guo
Compression Performance of Repaired Composite Stiffened Panels: Bolted Repair and Scarfed Bonded Repair
Zhao Chuang1,a, Guan Zhidong1, b, Guo Xia1
1School of Aeronautics Science and Engineering,Beihang University,Beijing, China
azcmacaron@sina.cn; bd5062010@163.com
Keywords: Composite stiffened panels; Bolted repair; Scarfed bonded repair; Buckling; Failure
Abstract.
Introduction Recently, composite material has been widely used in aircraft structures due to its advantageous properties [1].
After removing damaged material, the stiffened panel was changed to a damaged one with a 12mm circle hole at the center of skin for penetrated one, and a same size circle thinner area at the center of skin for non-penetrated one.
The mechanical properties of materials used in making panels were shown in Table 3.
Hashin, Failure Criteria for Unidirectional Fiber Composites, Journal of Applied Mechanics. vol. 47(1980) 329–334
Introduction Recently, composite material has been widely used in aircraft structures due to its advantageous properties [1].
After removing damaged material, the stiffened panel was changed to a damaged one with a 12mm circle hole at the center of skin for penetrated one, and a same size circle thinner area at the center of skin for non-penetrated one.
The mechanical properties of materials used in making panels were shown in Table 3.
Hashin, Failure Criteria for Unidirectional Fiber Composites, Journal of Applied Mechanics. vol. 47(1980) 329–334
Online since: July 2011
Authors: Shu Feng Li, Hui Li Tong, Cong Cong Liu, Yun Qin Yan
Effects of IGF-I on the Proliferation of Testis Sertoli Cells in Mouse
Shufeng Li1,a, Huili Tong1,b, Congcong Liu1,c and Yunqin Yan1,d*
1College of Life Science, Northeast Agriculture University, Harbin, Heilongjiang, 150030, China
alishufeng11@sina.com, btonghuili2004@163.com, cliucongc@gmail.com,
*Corresponding author:dyanyunqin@sohu.com
Keywords: Mouse, Sertoli cell, IGF-I, Proliferation
Abstract.
Materials and methods Preparation of D7 mouse sertoli cells.
[3] N.Z Ding and C.B Teng: Journal of Reproductive Medicine.
Materials and methods Preparation of D7 mouse sertoli cells.
[3] N.Z Ding and C.B Teng: Journal of Reproductive Medicine.
Online since: July 2011
Authors: Yu Bo Ma, Sheng De Hu, Qing Ran Guo
The Enlightenment for China by the Development of New Generation Cooperatives in North America
Yubo Ma1, a, Shengde Hu2,b , Qingran Guo3,c
1College of Economic and Management, Northeast Agricultural University, Haerbin, China
2College of Economic and Management, Northeast Agricultural University, Haerbin, China
3 School of Economics and Management, Henan Institute of Science and Technology, Xinxiang, China
a mybxy1979@163.coml, bhusde@sina.com, cguoqingran@yahoo.com.cn
Keywords: new generation cooperatives; Processing value-added orientation; Closed membership system; Limited liability cooperatives
Abstract.
Establishment of processing enterprises by cooperatives can make consumers more convenient inspection of food production, including the production of raw materials, agricultural products processing enterprises in the past are often can not provide to consumers which will help to enhance the consumer confidence in food safety issues.
[4] Fulton, M.1995, The Future of Canadian Agricultural Cooperatives: A Property Rights Approach,American Journal of Agricultural Economics, p.1153-1159.
Establishment of processing enterprises by cooperatives can make consumers more convenient inspection of food production, including the production of raw materials, agricultural products processing enterprises in the past are often can not provide to consumers which will help to enhance the consumer confidence in food safety issues.
[4] Fulton, M.1995, The Future of Canadian Agricultural Cooperatives: A Property Rights Approach,American Journal of Agricultural Economics, p.1153-1159.
Online since: November 2011
Authors: Xin Li Wei, Xiang Rui Meng, Xin Ling Ma, Ji Fu Lu
Research on improvement of heat sink
Enhance the heat dissipation performance of heat sink can not only rely on increased fin area which means fin material consumption and processing costs increase.
This method is simple and does not increase the fin's material consumption.
International Journal of Thermal Sciences.
This method is simple and does not increase the fin's material consumption.
International Journal of Thermal Sciences.