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Bright linear features are observed along <110> directions in electroluminescence (EL) images.
Experimental Almost thirty of the 3C-SiC pn diodes from the same wafer reported in [1] were investigated by room-temperature EL.
To determine whether or not these features exhibited any motion during electrical stressing, four 1-second-long EL images were recorded at 1, 10, 100, and 1000 A/cm 2; these so-called "pre-stress" images were used as initial-state references with which to compare the post-stress EL images.
(A) Pre- and (B) post-stress (see text for details) EL images taken at a current injection of 10 A/cm2.
There is negligible difference between pre- and post-stress EL images. explicit contrast to bipolar degradation commonly observed in bipolar 4H-SiC devices.

Al-Chaar et al.[3] have indicated that failure mechanisms can be predicted by a combination of the shear strength, compressive strength, and geometry of the infill in concrete frames.
Based on the above, El-Dakhakhni et al[12] have proposed a three-strut model for masonry-infilled steel frames, as shown in Fig. 1.
El-Dakhakhni’ three-strut model Fig. 2.
These specimens (Specimens 6 and 7) were tested by Mehrabi and Shing et al.[4].
El-Dakhakhni, M.

El-Hofy2,a, Hassan A.
Mohamed El-Hofy et al. [18], presented an experimental study and statistical analysis for cutting 2 lay-up configurations of multidirectional CFRP laminates.
Material preparation, data collection, and analysis were performed by HA El-Hofy, M.
Abd-Alrazzaq, and MH El-Hofy.
Procedia CIRP, 68, 535–540. doi:10.1016/j.procir.2017.12.109 [19] HA Youssef, HA El-Hofy, AM Abdelaziz, and MH El-Hofy (2020) Accuracy and Surface Quality of Abrasive Waterjet Machined CFRP Composites.

.%] area 1 el 84,1 80,7 10,9 10,6 4,3 8,3 0,001 0,002 0,157 0,210 area 2 el 84,1 79,6 10,2 9,8 5,2 9,9 0,21 0,463 0,081 0,106 area 3 el 84,0 79,5 10,3 9,9 5,3 10,1 0,065 0,142 0,158 0,209 area 4 el 84,2 80,0 10,5 10,1 5,0 9,6 0,004 0,009 0,11 0,146 area 5 el 84,0 79,8 10,7 10,3 4,9 9,4 0,111 0,241 0,146 0,193 EDAX error 2,01 0,3 0,25 0,05 0,03 The experimental results were taken in element list working model, when the operator can choose and select a list of chemical elements.
The alloy present very small variations of the percentages of chemical elements along the ingot with the next mean values on longitudinal axis: Fe: 84.148 (el) wt%, Mn: 10.560 (el) wt%, Si:) and 5.023 (el) wt%, Mg: 0.079 (el) wt% and Ca: 0.131 (el) wt%.
The alloy present very small variations of the percentages of chemical elements along the ingot with the next mean values on longitudinal axis: Fe: 84.148 (el) wt%, Mn: and 10.560 (el) wt%, Si: 5.023 (el) wt%, Mg: 0.079 (el) wt% and Ca: 0.131 (el) wt%.
Morikawa et al., Development of low rigidity 𝛽-type titanium alloy for biomedical applications, Materials Transactions, 43 (2002), 2970–2977 [5] J.
Hort et al., In vitro mechanical and corrosion properties of biodegradable Mg-Ag alloys, Materials and Corrosion, 65 (2014), 569–576 [7] R.

El-Labban1,b, A.K.
Al-Oufy2,3,c, and M.A.
Kamel et al. [9] found that 3wt.% of graphene additions to calcium grease reduced the friction coefficient and the wear scar diameter by 61% and 45%, respectively.
Also, there was an attempt to apply graphene in the lubrication of rolling element bearings conducted by Pape et al. [10].
El Sherbiny, K.A.

Al Hussaini, M.
Al-Hussaini, N.
Al Hussaini, M.
El-Ghamaz, A.
El-Ghamaz, M.

[2] S.Ochiai et al.: Composites Science and Technology Vol. 61 (2001), p. 2117
Neiman et al.: Russian Journal of Inorganic Chemistry Vol. 25 (8) (1980), p 2340
El-Maghraby, F.
El-Maghraby, M.A.
El-Ezz, M.

The multilayer devices fabricated have the following structure: ITO/ m-MTDATA(40 nm)/NPB(10 nm) /DCM2(0.05 nm)/ DPVBi (12 nm)/[Alq(5nm)/BPhen(3 nm)]n/Alq(70-8n nm)/LiF(1nm)/Al, Here n=0,1,2,3.
A bilayer of lithiumfluoride (LiF) and aluminium (Al) were used for the cathode.
Al(200nm)/ LiF(1nm) Alq(70-8n nm) DPVBi(12 nm) [Alq(5 nm)/ BPhen(3 nm)]n DCM2(0.05nm) NPB (10 nm) m-MTDATA (40 nm) ITO Fig. 1 The chemical structure of organic materials and the device structure of the OLEDs Results and discussion Fig.2 displays the Normalized EL intensity of the different devices at different voltage. the devices have the same emission EL spectra with the different well of the excton-blocking layer, The normalized EL spectra of the devices shows two main emission peaks at 438 nm and 570 nm originating from DPVBi and DCM2, respectively.
Though the EL output is decreased with the increasing well number, the current efficiency should not be sacrificed.
To be practical, an EL device should possess not only a high brightness but also high EL efficiency.

As well as the abstracts, the issue includes original papers on the topics of “Identification of Mg Vacancy in MgO by Positron Lifetime Measurements and First-Principles Calculations” (M.Mizuno et al.), “Analysis of the Effect of the Oxide Ion Vacancy on the Crystal Structure of La1-xCaxCrO3-?
by High-Temperature X-Ray Diffraction under Various Oxygen Partial Pressures” (N.Ohba et al.), “Synthesis and Characterization of Lithium Ion Conductors, Li3InBr6 and their Substituted Compounds” (Y.Tomita et al.), “Oxygen Diffusion in La2-xSrxCuO4-?
: Molecular Dynamics Study” (S.N.Savvin et al.), “Stress-Induced Diffusion and Cation Defect Chemistry Studies of Perovskites” (K.Salama et al.), “Transport and Electrochemical Properties of LiyNixMn2-xO4 Cathode Materials” (J.Molenda et al.), “Static and Dynamic Heterogeneities in Supercooled SiO2” (Vo Van Hoang), “Charge Distribution and Magnetic Interactions in PrBa2Cu3O7 with Substitutional Defects and Oxygen Disorder: the ab initio Approach” (M.?
uszczek), “Grain Boundary Defects in ZnO Ceramic Doped with Mo” (M.El-Hofy), “Elucidation of Ionic Conduction in Oxide Electrolytes by AC Method (Dielectric Relaxation Processes in La1-xSrxGa1-x+0.1Tix-0.1O3-?)”
(E.Iguchi et al.), “Diffusion of Oxygen at Ceramic Interfaces for High-Temperature Solid Oxide Fuel Cells” (T.Horita et al.), “Structural Defect Formation in Inorganic Sol-Gel Derived Oxides” (E.V.Frolova and M.I.Ivanoskaya), “High Oxide Ion Conductivity of (Ba1-x-ySrxLay)InO2.5+y/2 Members Derived from the Ba2In2O5 System” (K.Kakinuma et al.), “Germanium in Czochralski Silicon” (D.Yang and J.Chen), “Cation Transport in Stabilised Zirconias” (M.Kilo), “Probing the Effects of SHI and Doping-Induced Defects in Nanocrystalline Spinel Ferrites” (S.Ghosh et al.) and “Size Effect on the Electronic Properties of Doped and Undoped Ceria” (X.D.Zhou et al.).

Al-Arabi et al. [8] made numerical investigation of developing buoyant convection in vertical annulus using finite difference method for different radius ratios considering two thermal boundary conditions, namely either inner or outer wall is maintained at constant temperatureand other wall is insulated.
El-Shaarawi, A.
Al-Arabi, M.A.I.
El-Shaarawi, M.
El-Shaarawi, M.K.