Search results

The three natural ground motions are El Centro-EW (1940), WufengNE-NS (1999), and YunlincitySE-NS (1999).
The responses of El Centro-EW along Y-direction are less than the others.
References [1] Cao Wanlin, Fan Yanfei, Zhang Jianwei, et al: Earthquake Engineering and Engineering Vibration Vol. 1(2007), p.81-84, in Chinese
[5] Hou Guangyu, Chen Binlei, Miao Qisong, et al: Journal of Building Structures Vol. 2(2006), p.1-9, in Chinese
[8] Xu Peifu, Fu Xueyi, et al: Structural design for complex high-rise building (China architecture & building press, Beijing 2005), in Chinese.

Design of Observer for Direct Current Drive Andrius Petrovas1, a, Roma Rinkeviciene1, b and Saulius Lisauskas1, c 1 Vilnius Gediminas Technical University, Naugarduko street, 41, Vilnius, LT- 03227 Lithuania a roma.rinkeviciene@el.vgtu.lt, bandrius.petrovas@el.vgtu.lt, csaulius.lisauskas@el.vgtu.lt 3 Keywords: direct current drive, observer, modeling, simulation Abstract.
Kirchhoff's voltage law for armature circuit can be written as: a a a a a e di u R i L k dt     , (1) where au and ai is armature voltage and current, aR and aL is armature resistance and inductance, ek is back electromotive force coefficient,  is angular speed of motor.
Then it has the form: 1 1 2 1 2 1 ; a a a e m u R x L x k x k x Jx Bx       (5) and can be expressed in matrix form as: 11 22 1 0 01 0 ae a a a a m Rk L L L xxu xx kB J J J                                                (6) or using abbreviations it can be rearranged as:  x Ax Bu , (7) where x is state vector: 1 2 , x x     x x is state derivatives vector: 1 2 , x x     x    A is system matrix: ae aa m Rk LL kB JJ         A ;B is control matrix: 1 0 , 1 0 aL J         B u is input vector 0au    u .
Influence of load torque is described by motion equation as: em L d J B T T dt     . (16) The rank of input vector is two and it is expressed as: T aL u u T . (17) State-variable equations look like this: 11 22 1 0 1 0 ae a a a a L m Rk L L L x x u x x T kB J J J                                                   . (18) Simulation results of direct current drive, operated with load.

EL_Centro wave and Lanzhou wave are respectively exerted to the structure, both of which fit for the site soil of Type II.
Fig.9 Shear of core tube under EL_Centro wave Fig.10 Shear of total base under EL_Centro wave Fig.11 Shear of core tube under Lanzhou Wave Fig.12 Shear of total base under Lanzhou Wave Mechanism Analysis.
[4] P.Fajfar & M.Fischinger: Mathematical Modeling of Reinforced Concrete Structural Walls for Nonlinear Seismic Analysis, Structural Dynamics, 1990:471-478 [5] Kabeyasawa, T.Et al,U.S.

Abd El Raouf1,a*, N.
El Mahallawy2,b, M.K.
Kollo, R.Veinthala, “Hot and cold regions during accumulative roll bonding of Al/Al2O3 nanofibre composites”, Material Engineering,Vol. 65, 2, 132–137, 2016
Borhani, “Corrosion behavior of Al-2wt%Cu Alloy processed by accumulative roll bonding (ARB) process”, Ultrafine Grained and Nanostructured Materials, Vol.49, 22-28, 2016
Kazykhanov, X.Sauvage, “On the origin of extremely high strength of ultrafine–grained Al alloys produced by severe plastic deformation”, Vol. 1, 1-10, 2010

In 1975, nonlinear static analysis method first put forward by Freeman et al.
El Centro waves, Tianjin waves and Shanghai waves are chosen as the seismic waves in the process of computation.
In thecase of rarely encountered earthquake, the maximum story drifts angle of the structure is 1/714，1/580 and 1/1007, which are much smaller than the plastic story drift limits =1/50, under the Table 1 Storey drift and storey drift angle Seismic wave EL-Centro wave Tianjin wave Shanghai wave Frequent earthquakes Maximum story drift(mm) 2.8 3.9 6.4 Maximum story drift angle 1/5000 1/3590 1/2187 rarely encountered Earthquakes Maximum story drift(mm) 19.6 24.1 13.9 Maximum story drift angle 1/714 1/580 1/1007 action of EL-Centro wave,Tianjin wave, Shanghai wave .
Therefore, through the nonlinear static analysis software of new multi-storey frame structure, we calculate the maximum relative displacement, under the action of EL-Centro wave, Tianjin wave and Shanghai wave shown in Figure 8.
But, under the action of EL-Centro wave, the relative displacement is relatively larger.

Ibrahiem El-Emary and M. 2Mona Abd El-Kareem: Towards Using Genetic Algorithm for Solving Nonlinear Equation Systems World Applied Sciences Journal 5 (3): 282-289, 2008
[5] Application of Genetic Algorithm in solving linear equation systems Al Dahoud Ali , Ibrahiem M.
El Emary, Mona M.
Abd El-Kareem

Noorzaei et. al. [3], studied on the application and verification of a two-dimensional developed finite element code for the thermal-structural and stress analysis of RCC dams.
Fig. 3: Temperature Distribution Fig.4 (a) shows the variation of maximum principle stress path along the block width (EL.3.9 m) for different construction time.
Fig.4 (a): Variation of Maximum Principle Stress path along the Dam width(EL.3.9 m) The variation of minimum principle stress along the dam width for the same level (EL. 3.9 m), has been plotted in Fig.4(b).
Fig.4 (b) Variation of Minimum Principle Stress path along the Dam width (EL.3.9 m) After completion of the thermal analysis, stress analysis is performed simultaneously and safety coefficient against cracking is calculated using Eq. 2.

Kuang at el. investigated H2S molecule adsorption onto small gold clusters [12].
Hamilton at el. [14].
Zhao et al. [5].
Schlegel, et al.
Naumenko et al. , J.

The electroluminescence (EL) spectra were obtained by a spectrometer (SM442) connected with fiber optic wire.
Metz et al. reported high ionization energies of iron oxide and copper oxide compared to the iron and copper metals, respectively [26].
To analyze the effect of Ag nanoparticles on the peaks shift in EL spectra of OLED devices, Fig. 4 presents the normalized EL of reference device and OLED with Ag nanoparticles.
The normalized EL showed no shift in the wavelength of the spectra peaks for all devices, which is around 497 nm, as shown in the inset figure.
Al-Masoodi, N.F.F.B.

The high intensity of Al signals, compared to those of steel substrate is a valid confirmation that Al covers the steel surface; it results to be affected by several process parameter.
References [1] El-Sayed M.
Li, Study on electrodeposition of Al on W-Cu substrate in AlCl3+LiAlH4 solutions, Surf.
Zein El Abedin et al, Additive free electrodeposition of nanocristalline aluminium in water and air stable ionic liquid; Electrochemistry communications 7 (2005) 1111-1116
Bardi et al Electrodeposition of aluminium film on P90 Li–Al alloy as protective coating against corrosion; Surface & Coatings Technology 203 (2009) 1373–1378