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Online since: December 2011
Authors: Qin Yang, Yong Li Yang, Wen Dong Wang, Man Ge, Dan Li
Adsorption is one of the efficient methods in humic acid removal.Many solid materials as adsorbents have been investigated, which include activated carbons, natural and synthetic zeolites, clays and modified clay minerals, alumina, resins, chitosan, fly ash, aminated polyacrylonitrile fibers and Mg/Al layered double hydroxides[4-7].Moreover, Cucurbiturils are one kind of new functional materials compounds which possess a hydrophobic cavity accessible through portals surrounded by polar carbonyl groups capable of including a variety of hydrophobic and the appearance of hydrophilic[8].
El-Ashtoukhy, N.K.
El-Ashtoukhy, N.K.
Online since: September 2011
Authors: Wei Zhong Chen, Jian Ping He
Martin et al (in 1975) the experiment indicated that the relations between the plastic volumetric strain and the circulation shearing strain amplitude have nothing to do with the solidifying pressure.
The earthquake wave includes El Centro wave and Kobe wave.
The earthquake wave includes El Centro wave and Kobe wave.
Online since: January 2015
Authors: Tao Song
Image Diffusion Using Hyperchaotic System
In the present paper, a hyperchaotic system proposed by Li et al. [14] is employed to generate the key stream for diffusion.
Faragallah, A.A.A El-Latif, “A chaotic block cipher algorithm for image cryptosystems”, Communications in Nonlinear Science and Numerical Simulation, vol. 15, no. 11, pp. 3484-3497, 2010
Faragallah, A.A.A El-Latif, “A chaotic block cipher algorithm for image cryptosystems”, Communications in Nonlinear Science and Numerical Simulation, vol. 15, no. 11, pp. 3484-3497, 2010
Online since: February 2018
Authors: Modris Roze, Sintija Zīriņa, Agija Stanke, Valdis Kampars
Nguyen et al., Hierarchical ZSM-5 materials for an enhanced formation of gasoline-range hydrocarbons and light olefins in catalytic cracking of triglyceride-rich biomass, Ind Eng Chem Res. 2015 (54) 773-782
El-Nahhal, J.K.
El-Nahhal, J.K.
Online since: October 2008
Authors: Krzysztof Jan Kurzydlowski, Tomasz Wejrzanowski, T.B. Tengen, R. Iwankiewicz
Parameters
Metals
'
0σ
(MPa), [12]
Kd
(MPa-mm1/2)
tK
0σ
(MPa)
h
(nm), [13]
Hm
(KJ-mol-1)
Aluminium, Al 16.7 1301.77 1.30 15.40 0.250 10.71
Copper, Cu 33 4277.39 2.85 30.15 0.270 13.26
Table 1: Parameters used during analysis
Fig.2, Fig.3 and Fig.4 show that both the mean grain size, E(d), and grain size dispersion, CV(d),
together play vital roles in the design of the required materials properties, σ.
0
200
400
600
800
1000
1200
50
100
150
200
250
300
0.0
0.5
1.0
σ [MPa]
E(d)[nm]
CV(d)
Copper
0
100
200
300
50
100
150
200
250
300
0.0
0.5
1.0
σ [MPa]
E(d)[nm]
CV(d)
Aluminium
Fig.2.
[11] E.L.
[11] E.L.
Online since: June 2009
Authors: Geun Jo Han, Dong Seop Han, Jung Min Ha
(a) driving part (b) boom part
Fig. 1 Symbols of loads and dimensions for a movable crane
Referring to Fig. 1(b), the equilibrium condition for moment on the basis of point O is found to be:
( ) ( ) 0cosWLLWLWL
cossincossinFL:M B
6
1i
E6O
TCOTC
iOi
C
P
P
C
CP =
+++
−
− ∑
∑ = θ
θθθθ (1)
Where, Bθ : luffing angle of boom for a horizontal axis
Pθ : angle of OP for a horizontal axis ; ( )POPO
1
BP HVtan−−=θθ
Cθ : angle of hydraulic cylinder (QP ) for a horizontal axis
iL : initial length between the center of gravity of i-times boom and the origin (O)
TCL : initial length between the center of gravity of telescopic cylinder and the origin
EL : length between the center of gravity and right edge of 6-times boom
iLL : stretching length of each boom
PL : length between the connecting pin of cylinder (P) and the origin
OiL : length between the center of gravity of i-times
( ) −+ = − CP 2 A 2 C 2 P1 A LL2 LLL cosθ (2) Where, CL : length of hydraulic cylinder ; ( ) ( )2QPP 2 QP P C VsinLHcosLL + +− = θ θ AL : length between connecting pin of cylinder (Q) and the origin ; 2 Q 2 Q A VHL += Therefore, the load applied on cylinder ( CF ) with respect to the luffing angle of boom ( Bθ ) and the hoisting load (W) is expressed as follows: ( ) AP B 61i E6O TCOTC iOi C sinL cosWLLWLWL F θ θ +++ = ∑= (3) The load ( CF ) derived in Eq. (3) is equal to the load applied on the pin type load cell which connects a hydraulic cylinder and a boom.
( ) −+ = − CP 2 A 2 C 2 P1 A LL2 LLL cosθ (2) Where, CL : length of hydraulic cylinder ; ( ) ( )2QPP 2 QP P C VsinLHcosLL + +− = θ θ AL : length between connecting pin of cylinder (Q) and the origin ; 2 Q 2 Q A VHL += Therefore, the load applied on cylinder ( CF ) with respect to the luffing angle of boom ( Bθ ) and the hoisting load (W) is expressed as follows: ( ) AP B 61i E6O TCOTC iOi C sinL cosWLLWLWL F θ θ +++ = ∑= (3) The load ( CF ) derived in Eq. (3) is equal to the load applied on the pin type load cell which connects a hydraulic cylinder and a boom.
Online since: March 2006
Authors: R. Guardián, A. Molina, B. Campillo, R. Mendoza, Carlos González-Rivera, J.A. Juárez-Islas
The experimental Cr stabilized ultra-clean C steel used in this work contained 0.010 % C, 0.20 %
Mn, 0.011 % P, 0.002 % S, 0.050 % Al, 0.025 % Si, 0.004 % Ni, 0.035 % Cr, 0.004 % N.
Properties → Specimen ↓ YS0.2% [MPa] UTS [MPa] El [%] (r ) n Required properties 170 345 46 ≥ 2 ≥0.21 Annealed 800 oC/ Ti [15] 145±16 311±12 55.6±1.2 2.08±0.05 - Batch annealed 670 o C/Cr 169±17 318±20 43.8±2.8 1.98±0.03 0.24±0.01 Annealed 700 oC / Cr 181±23 304±18 47.0±3.7 1.35±0.09 0.32±0.02 Annealed 750 oC / Cr 234±13 378±9 50.3±1.0 1.62±0.07 0.31±0.05 Annealed 800 oC/ Cr 242±6 378±17 51.3±0.8 2.21±0.05 0.30±0.03 n: strain-hardening exponent.
Properties → Specimen ↓ YS0.2% [MPa] UTS [MPa] El [%] (r ) n Required properties 170 345 46 ≥ 2 ≥0.21 Annealed 800 oC/ Ti [15] 145±16 311±12 55.6±1.2 2.08±0.05 - Batch annealed 670 o C/Cr 169±17 318±20 43.8±2.8 1.98±0.03 0.24±0.01 Annealed 700 oC / Cr 181±23 304±18 47.0±3.7 1.35±0.09 0.32±0.02 Annealed 750 oC / Cr 234±13 378±9 50.3±1.0 1.62±0.07 0.31±0.05 Annealed 800 oC/ Cr 242±6 378±17 51.3±0.8 2.21±0.05 0.30±0.03 n: strain-hardening exponent.