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Online since: August 2013
Authors: Rong Jie Liu, Zheng Cai Li, Ya Cong Wu, Cai Fang Cheng
Statistical analysis
All analysis of the data was performed using SPSS 16.0 software and EXCEL.
In addition, in the process of forestation, soil preparations activities led to a significant reduction of soil organic matter [15].
In addition, in the process of forestation, soil preparations activities led to a significant reduction of soil organic matter [15].
Online since: October 2011
Authors: Fu Zhong Li, Qiong Cui
It makes use of thermal energy to create an oxidation reduction reaction, the formula is below:
2Al+3CuO→Al2O3+3Cu
The “exothermic welding” process is very short, but the heat generated is sufficient to enable the welding interconnection point to form permanent molecules.
As can be seen from the table 2, the galvanized steel has the maximal cross section, especially when considering side corrosion rate. 4.2 Relevant cost Following the latest data of Shanghai Futures Exchange and quoted price from suppliers, table 3 list grounding grid material cost in a 500kV substation.
As can be seen from the table 2, the galvanized steel has the maximal cross section, especially when considering side corrosion rate. 4.2 Relevant cost Following the latest data of Shanghai Futures Exchange and quoted price from suppliers, table 3 list grounding grid material cost in a 500kV substation.
Online since: May 2012
Authors: Yang Chen, Xiao Hua Yin, Xing Zheng Xiong, Yun Liu, Xiao Hui Huang, Xiao Xue Wang
All the data shows that the production status of the Tung oil trees is not optimistic in the TGRAC.
For reason of the production reduction of Tung oil trees and the great quality of Chinese Tung products, the Tung products market shows a trend of short supply.
For reason of the production reduction of Tung oil trees and the great quality of Chinese Tung products, the Tung products market shows a trend of short supply.
Online since: August 2012
Authors: Li Bin Xu, Hao Wen Ye, Nai Qian Feng, Ch'ng Guan Bee
Table 3 Statistics of the High Performance Concrete Working Performance in Ultra-High-Buildings
Number
Building
Concrete Number
Slumping degree
Extended degree
Slumping time
1
Burj Khalifa Tower
C80
/
Paving degree: 50cm
/
2
Shanghai Global Financial Hub
C40
220~240mm
Over 500mm
Over 2h
3
Sears Tower[5]
C25
203mm
/
/
4
Shanghai Jinmao Mansion
C40
230~250mm
Over 550mm
Over 2h
5
Hongkong International Financial Centrer
C60
180~200mm
/
/
Analyzing the above-mentioned data can conclude that general requirement of the slumping degree of the high pumping concrete should be over 200m and the extended degree should be over 500m.
3 Research and development of ultra-high-performance concrete and ultra-high-performance self-compacting concrete and its high performance pumping technology [8]
3.1 Project Introduction
West Tower Project in Guangzhou is one of the six landmarks in Pearl River New Town, located in the southwest part of the core financial business area in Pearl River New Town
The admixture should use KJ-JS superplasticizer, whose concentration is 22% and the water reduction rate is greater than 30%.
The admixture should use KJ-JS superplasticizer, whose concentration is 22% and the water reduction rate is greater than 30%.
Online since: August 2012
Authors: Min Chen, Min Jie Pang, Hong Guang Fang
Yang Xiao-min [4] found the reasons of the high energy consumption of the public buildings were the design of the air conditioning system, operations management and so on, base on the measured data and operational records of the air-conditioning system and other construction equipments.
Based on the suitable building energy-saving insulation systems, this paper tries to figure out a better energy saving design scheme, so as to maximize the reduction of operating energy consumption and realize the minimum operating energy consumption of the public building.
Based on the suitable building energy-saving insulation systems, this paper tries to figure out a better energy saving design scheme, so as to maximize the reduction of operating energy consumption and realize the minimum operating energy consumption of the public building.
Online since: July 2011
Authors: Yu Zhang Xiong, Qing Feng Chen, Xian Zhong Zhang, Gui Feng Zhou
The quantitative metallographic data for volume fraction and mean linear intercept grain sizes of microalloyed steels was summarized in Table 2.
According to these results, Speeding up cooling after finish rolling could increase the yield strength (YS), ultimate tensile strength (UTS), at the expense of some reduction in elongation and contraction of area.
According to these results, Speeding up cooling after finish rolling could increase the yield strength (YS), ultimate tensile strength (UTS), at the expense of some reduction in elongation and contraction of area.
Online since: December 2010
Authors: Jin Feng Wang, Da Ling Mao, Peng Fei Xue
The specific loading pattern can be seen in the standard JTG D60-2004[12]: loading grade was highway I, 3 lanes along transverse direction, uniform load was 10.5kN/m, concentrated load was 360kN, transverse reduction coefficient was 0.78.
Because Huangpu bridge was a new bridge, the relative data was deficient.
Because Huangpu bridge was a new bridge, the relative data was deficient.
Online since: September 2011
Authors: Marcin Potoczny, Bolesław Zachara
Based on the obtained results of examinations, which were conducted with constant relative volume factor we can conclude that a tendency of obtained seal burst pressure drop in result of increasing operational gap height and reduction of number of sealing stage, has been observed.
[11] MRF-122EG, Magneto-Rheological Fluid, Lord Technical Data (USA)
[11] MRF-122EG, Magneto-Rheological Fluid, Lord Technical Data (USA)
Online since: July 2006
Authors: Trond Furu, Tanja Pettersen, Dag Mortensen, Arild Håkonsen, Yan Jun Li
The nucleation frequency of the phase transformation can be described as follows,
)exp()
exp()
(
hom
Pr0
TR
Q
C
Tk
G
NNNN
g
m
B
Active
imary −⋅⋅
⋅
Δ
−⋅−⋅=
∗
•
θ (2)
where, Nprimary is the number density of the Al6(Mn,Fe) constituent particles; NActive is the number
density of the Al6(Mn,Fe) particles, on which α-Al(Mn,Fe)Si precipitate has nucleated; and QθC m
are nucleation law parameters; =7.3E-2 and Q
θC m =125000J/mol; N0 is a tuning parameter;
is the critical nucleation energy for homogeneous nucleation of dispersoids and given by
∗
Δ homG
2
3
hom
)/(3 16
mm VG
G
Δ
=Δ ∗ πγ
(3) where, γ is the surface energy of the precipitate-matrix interface, mGΔ is the energy reduction for
the precipitation of one mole precipitate, and Vm is the mole volume of precipitate.
More details of the experimental procedure and experimental data can be found elsewhere [4,5,10,11].
More details of the experimental procedure and experimental data can be found elsewhere [4,5,10,11].