Search results

Fig. 3 and 4 show the FTIR spectra of undissolved (a) PVA particles and (b) PAA particles which confirmed the presence of PVA where the functional of hydroxyl group of PVA at 3250.10 cm-1 Krumoza et al.,(2000)[12] is observed in PVA/ENR25 spectrum.
El-Houssiny, A.A.M.
Abd-El-Messiah, Biodegradable blends based on polyvinyl pyrrolidone for insulation purposes, Journal of Applied Polymer Science. 124 (2012) 3879-3891
Kawahara, E.L.

The largest tensile elongation to failure (percent elongation, %EL) (150%) was observed at room temperature in UFG element Zn at present.
The sample of Zn ball milled for 3 hours and annealed at the above condition has the yield strength (σ0.2) value of 95 MPa and the largest 150% EL in tensile test, which is larger than 110 % EL and lower than σ0.2 of 115 MPa of Zn observed previously with average grain size of 240 nm at the same condition of tensile test[1].
Koch et al.: Applied Physics Letters, Vol. 81 (2002), p. 823 [2] S.X.

For erosion protection of new Taitung Bridge, this study evaluates different cases according to site conditions in front of pier 2 on the main deep trough in downstream with width 65m×length 15m, EL.24.5m of the apron set as case A, width 65m×length 15m, EL.25&24m of the stepped apron set as case B, width 120m×length 15m, EL.25&24m of the stepped apron set as case C, etc.
According to the above simulation, the erosion formulas by Ettema et al. (1998) [9], which Professor Cheng Lin[5] promoted, applied to calculate their local scour depths and compare the improvement of apron set, as shown in Fig. 6.

Numerical Simulation of Turbulent Thermal Fluid in Tee Water Duct Cooled Nuclear Reactor Fethi Saidi1,a, Mohammed Aounallah1,b, Mustapha Belkadi1,c, Lahouari Adjlout1,d and Omar Imine2,e 1 Laboratory of Aero-Hydrodynamics Naval, USTO MB, P.O. 1505 El-Mnaouar Oran Algeria 2 Laboratory of Aeronautics and Propulsive Systems, USTO MB, P.O. 1505 El-Mnaouar Oran Algeria a fetpod@gmail.com, b aounallah_2000@yahoo.fr, c belkadigma@yahoo.fr, d adjloutl@yahoo.fr,e imine_omar@yahoo.fr Keywords: Thermal mixing, turbulent fluid, Tee junction, nuclear reactor Abstract.
Walker et al. [2] have performed steady-state calculations in T-junction with ANSYS-CFX-10 using different turbulence models.
Chapuliot et al. [4] have inspected the incident of the residual heat removal system of the Civaux unit 1 reactor using the CAST3D code.
Sakowitz et al
Ayhan et al. [7] investigate the thermal mixing and fatigue damage in power plant pipes by estimating the frequency of velocity and temperature fluctuations in the mixing region using RANS and LES.

El Khakani4,g, F.
Dark currents are lower with Al-implanted diodes (2 pA/cm2 @ - 5 V).
Al-implanted photodiodes reveal a ratio six times higher than B-implanted diodes.
For a given annealing temperature, B-implanted diodes give rise to a higher signal than Al-implanted diodes.
Fig.6 Spectral responsivities of Al-implanted photodetector (the power source light is shown in the inset) Fig.7 Spectral responsivities of Al- and B- implanted photodetectors Summary 4H-SiC UV photodetectors were realised, based on implanted p+n junctions either by Al standard beam or by B plasma.

References [1] El-Rafie M H, Mohamed A, Shaheen I, et al.
[2] Yang Fuchu, et al.
[3] Wazed Ali S, Rajendran S, et al.
[4] Nischala K, et al.
[5] Lim Z H, Kevin M, et al.

Selection and Processing of the Specimen Material The material used in the present study is AZ91 with following chemical composition Mg-9%Al-1%Zn (in wt. %).
K, Multi-dome test for determining the strain rate sensitivity index of a superplastic 7075 Al alloy sheet, The International Journal of Alloys and Compounds. 583 (2014) 226-230
[6] El-morsy A.
,Ken-ichi manabe, and Hisashi Nishimura, Superplastic characteristics of Ti-alloy and Al- alloy sheets by multi-dome forming test, materials transactions. 42 (2001) 2332-2338
[8] Abdel-Wahab, El Morsy, Ken-ichi Manabe and Hisashi Nishimura, superplastic forming of AZ31 Magnesium alloy sheet into a rectangular pan, materials transactions. 43 (2002) 2443 – 2448.

EL Glaeser, Kahn ME et al have studied the correlation of regional development, climate change and carbon emission[5-7]; Mingkui, c and F.I.
Action plan for climate and energy 2010-2010 ,2010 [4] Fan y, Liu L C, et al. 2007.
[5] EL Glaeser, Kahn ME.
Journal of Urban Economics, Vol.67(2010), p.404 [6] Christopher Kennedy, Steinberger Julia, Gasson Barrie, et al.
Energy Policy,Vol.9(2010),p.4828 [7] Zhao B,Kreeuter U, Li B et al.

As can been in this figure Al particles deformed and SiC particles fractured and incorporated into the Al matrix.
Fig. 9 shows Williamson-Hall plot for Al phase.
Al particles tend to agglomerate due to high energy produces by planetary mill, and ductility of Al phase itself.
El-Eskandarani: Mechanical Alloying for Fabrication of Advanced Engineering Materials (Noyes Publications/William Andrew Publishing, Norwich, NY 2004)
El-Eskandarani: J. alloys and Compounds Vol. 279 (1998), p. 263 [3] J.

Wenwen et al. [7] investigated the microstructural features and mechanical properties of AZ91 (Mg-9%Al-1%Zn-0.2%Mn) based alloys containing Ca and rare earth (RE) metals, and reported that small amount of Ca does not produce any new phase but mainly dissolves into β (Mg17Al12) phase, which leads to the enhanced thermal stability of the β phase.
Lee et al. [8] reported that solute elements such as Zr, Ca and Si possess higher growth restriction factors on Mg due to their strong segregating power.
The absence of Mg2Ca phase, which is generally found in Mg-Ca or Mg-Al-Ca alloys [11], is noteworthy.
Fig. 7 shows the changes in yield strength (YS), ultimate tensile strength (UTS) and elongation (El.)
From the previous report by Wenwen et al. [7] that the addition of Ca into Mg-Al alloys results in higher thermal stability of the β (Mg17Al12) phase, Ca might also play a important role in enhancing thermal stability of the Mg12RE phase.