Search results

This guest-host hybrid layer prepared in an OLED structure is crucial for enhancing electroluminescence (EL) efficiency.
Among the several layers comprising the OLEDs, the EL efficiency of devices is significantly improved by the insertion of HBLs.
Result and discussion The device with a structure of ITO/NPB (50 nm) /TBADN:BCzVB (W%, 40 nm) /BCP (Y nm)/Alq3 (10 nm) /Al (200 nm) was fabricated in this study.
In order to investigate the effect of BCzVB dye doping on the EL characteristics of the device, a device with a structure of ITO/NPB (50 nm)/TBADN:BCzVB (W%, 40 nm)/Alq3 (10 nm)/Al (200 nm) was fabricated, where the deposition rate ratio W% of BCzVB to TBADN was varied from 2 to 14%.
EL spectra of the device for a TBADN emitter doped with different concentrations of BCzVB.

Designing, Processing and Isothermal Transformation of Al-Si Medium Carbon Ultrafine High Strength Bainitic Steel Sherif Ali Abd El Rahman1,a, Ahmed Shash1,b, Mohamed K.
Increasing of the holding time from 24 hours to 73 hours shows a slight enhancement in the microstructure refinement. 1F (0.0 Al wt.%) 2F (0.1 Al wt.%) 3F (0.27 Al wt.%) 4F (0.65 Al wt.%) 5F (1.08 Al wt.%) 6F (1.16 Al wt.%) Figure 3: The microstructure for the 72 hours isothermal transformation Microstructure for 120 hours isothermal transformation Figure 4 shows the microstructure of the bainite structure after 120 hours isothermal transformation.
Increasing of the isothermal holding time leads to increase the amount of the bainite [20] [21]. 1F (0.0 Al wt.%) 2F (0.1 Al wt.%) 3F (0.27 Al wt.%) 4F (0.65 Al wt.%) 5F (1.08 Al wt.%) 6F (1.16 Al wt.%) Figure 4: The microstructure for the 120 hours isothermal transformation Figure 5 illustrate that the retained austenite island block is widely formed in steel 1F, while there is no austenite block observed at 4F.
El-Fawkhry, Sherif Ali Abd El Rahman, Iman S.
[25] Mohamed Kamal El-Fawkhry, Ahmed Shash, Sherif Ali, Hassan Bahaa and Taha Mattar, “Enhancement of pearlitic structure through inoculation with nano-size silicon carbide”, Int.

Ting-long et al. [6] studied the frictional heating on Brake materials.
El-Tayeb and Liew [7] analyzed the effect of water spray on the friction behavior of brake pads.
El-Sherbiny, Wear, 34 (1975) 311
El-Tayeb and K.W.
EL-Tayeb and K.W.

El Bekkachi1, A.
El-Hagary et al. , J.
El-Hagary et al., J.
Zan et al., J.
Sun et al., J.

Davies et al. [5] developed forming limit diagrams for welded materials in AA5xxx 1-2 mm TWBs under biaxial stretching condition based on M-K model.
El Fakir et al. developed and successfully validated a forming limit diagram prediction model for AA5754 that undergoes temperature, strain rate and strain path changes during deformation [6].
El-Fakir, L.
El Fakir, L.
El Fakir, L.

Dry-sliding-wear behavior of ultra-fine grained 6061 Al alloy and AZ61 Mg alloy was investigated.
The ARB processed 6061 Al alloy shows significantly increased hardness and strength until 4 cycles.
Values of hardness (H), yield stress (�0.2), tensile strength (�uts), and elongation (El) of the ARB processed 6061 Al alloy and the ECA pressed AZ61 Mg alloy Number of H �0.2 �uts El Number of H �0.2 �uts El ARB cycles [HV] [Mpa] [Mpa] [%] ECAP passes [HV] [Mpa] [Mpa] [%] As-received 82.7 135.1 279.3 17.4 As-extruded 66.1 215.7 321.8 33.1 1 107.5 267.8 288.8 3.1 1 72.1 191.6 299.9 34.8 2 108.7 361.9 381.1 3.1 2 72.7 204.5 319.3 37.9 3 119.8 318.1 336.1 3.7 3 74.5 214.5 331.4 34.5 4 137.4 322.6 351.3 2.9 4 78.8 199.6 317.3 44.5 5 86.8 261.1 294.1 2.1 6 72.6 201.6 330.3 34.3 6 84.4 200.1 233.6 2.1 8 72.3 161.1 313.4 54.1 7 80.2 218.3 244.1 2.8 Wear rates of the ARB processed Al alloy and the ECA pressed Mg alloy are plotted against number of cycles and passes in Fig. 3 and Fig. 4, respectively.
The poor wear resistance of the severely deformed Al and Mg alloys was attributed to their microstructure.
The high wear rate of the ARB processed Al alloy is attributed to the strain-induced grain coalescence.

(c) External quantum efficiency vs. luminance, and (d) the EL spectra of Devices 1 and 2 under the luminance of 10000 cd/m2.
The EL spectra of Device 1 without an electron blocking layer, as shown in Fig. 2(d), showed that there existed two peaks at 432 and 590 nm.
(c) External quantum efficiency vs. luminance, and (d) the EL spectra of Devices 2, 3 and 4 under the luminance of 10000 cd/m2.
[6] Liu, Z., Qiu, J., Wei, F., et al. (2014).
[8] Giebink, N., Forrest, S., et al. (2008).

El Ghareeb [8] evaluated glass fiber and found out its applications in pressure piping.
Shi et al, F.M.
References [1] El-Tayeb NSM, Yousif BF, Brevern PV.
[2] El-Tayeb NSM, Yousif BF.
El Ghareeb “Evaluation of Glass and Basalt Fiber Reinforcements for Polymer Composite Pressure Piping” J.

El-Sayyad, A.
El-Batal, M.
El-Okr.
El-Batal, G.
El-Sayyad, A.

Al-Amoudi, M.
Abo-El-Enein.
Shimy et al. (2000)[[] E.El-Shimy, S.A.
Abo-El-Enein, H.El-Didamony.
El-Korchi.