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Evens et al. [2] reported that 3D printed moulds with conformal cooling channels have a shorter start-up time and injection moulding cycle time as compared to conventional moulds that utilised straight cooling channels.
Bai et al. [5] deduced that these microstructural defects were the source for crack propagation, and were detrimental to the mould’s mechanical properties.
Alloying element Ni Co Mo Ti Al Si C S P Fe wt. % 17.9 9.1 5.04 0.81 0.11 0.02 0.007 0.002 0.001 Balance Methodology The SLM process parameters investigated in the present work include: laser power, scanning speed, and hatch spacing.
Configuration SLM Process Parameters Mechanical Properties Relative density (%) Scanning speed mm s-1 Hatch spacing (mm) VED J mm-3 UTS (MPa) YS, 0.2% offset (MPa) E GPa El (%) B-1 700 0.08 178.57 1203 1101 167 10.2 97.66 B-2 700 0.10 142.86 1204 1104 162 8.3 99.71 B-3 800 0.08 156.25 1187 1090 164 8.4 96.69 B-4 800 0.10 125.00 1191 1067 172 6.8 98.78 B-5 900 0.08 138.89 1200 1093 170 8.1 96.31 B-6 900 0.10 111.11 1169 1048 163 7.9 96.85 Conventional wrought condition for comparison [8] 1000-1170 760-895 180 6-15 - Relative density test was conducted according to ISO 3369 standard, and the relative density of cube samples was calculated following Archimedes’ principle.
The mechanical properties investigated include: ultimate tensile strength (UTS), 0.2% offset yield strength (YS, 0.2% offset), modulus of elasticity (E), and elongation at fracture (El).

N,N’-diphenyl-N,N’-bis(1-naphthyl)-1,1’-biphenyl-4,4″-diamine (α-NPD) was used as a hole transporting layer (HTL) and 4,7-diphenyl-1,10-phenanthroline (BPhen) as an electron-transporting layer (ETL) beneath a LiF/Al cathode.
The current density-voltage-luminance (J-V-L) characteristics and electroluminescence (EL) spectra were measured and recorded by a testing setup comprising of a Keithley 2400 source-meter and a Minolta PR-6500 spectrometer.
Figure 1 shows the proposed energy diagram of the Device A having the structure of ITO/α-NPD(28 nm)/TCTA(5 nm)/EPH31(2 nm)/EPH31:10%PYD01(10 nm)/EPH31(5 nm)/Bphen(25 nm)/LiF/Al.
To further improve the power efficiency, we have fabricated Device B with a structure of ITO/α-NPD(28 nm)/TCTA:5%RD(2 nm)/ TCTA (3 nm)/EPH31(2 nm)/EPH31:10%PYD01(10 nm)/EPH31(5 nm)/Bphen(25 nm)/LiF/Al.
Device A and B exhibit the same EL spectral shape with an identical peak wavelength (see the inset of Fig. 2).

Badawi2 1Faculty of Science, Physics Department, South Valley University, Aswan-81528 Egypt 2Faculty of Science, Physics Department, El-Minia University, P.O. 61519 El-Minia, Egypt Keywords: Plastic Deformation, Positron Annihilation Lifetime Spectroscopy, Resistivity, Vickers Hardness Abstract Defects are central to any understanding of material characteristics.
Table 1 Chemical composition of 5754 Al-alloy Element % Si 0.4 Fe 0.4 Mn 0.5 Mg 2.6-3.2 Al Balance 1.3 Resistivity Electrical resistivity is a fundamental property of every conducting material (as well as semiconductors) and is a critical parameter in both materials research and wafer fabrication.
A sandwich configuration has been used for Al alloy sample measurements.

Ortiz, et al.: Uso de las TIC por parte de los tutores de una universidad pública Mexicana.
Martín et al.: Mater.
Abellán-Nebot et al.: La Wikipedia como herramienta para el aprendizaje activo.
Experiencia en el marco del proyecto Wikifabricación.

El-Shazly, Chemical and Materials Engineering Department, King Abdulaziz University, Saudi Arabia Prof.
Al-Qawabah, Tafila Technical University, Jordan Prof.
AL-Jaber, Department of Physics, An-Najah National University Nablus, Palestine Dr.

Al-Gahtani, An Overlapping Domain Decomposition Approach for Coupling the Finite and Boundary Element Methods, Engineering Analysis with Boundary Elements, 24 (2000), pp. 391-398
Al-Gahtani, M.
El-Gebeily, Iterative Coupling of BE and FE Methods in Elastostatics, Engineering Analysis with Boundary Elements, 25 (2001), pp. 685-695
El-Gebeily, W.M.
Al-Gahtani, Convergence of the Domain Decomposition Finite Element-Boundary Element Coupling Methods, Computer Methods in Applied Mechanics and Engineering, 191 (2002), pp. 4851-4867

The production of Fe2+after irradiation of samples was confirmed by Mousa et al. [12].
El-Saadawy, “Effect of gamma irradiation on the structural properties and diffusion coefficient in Co–Zn ferrite”, Journal of Magnetism and Magnetic Materials 256 (2003)63–68
El Ahdal, M.
[6] Minh-Tri TA, David Briand, Bertrand Boudart, Yannick Guhel, “60Co gamma irradiation effects on electrical characteristics of Al/Y2O3/n-Si/Al capacitors”, Microelectronic Engineering 87 (2010)2158–2162

Epoxy resins reinforced with unidirectional high-strength glass fibres are frequently studied, but Jacobs et al. [3] did not notice better wear resistance compared to neat epoxy.
According to (a) (b) El-Tayeb et al. [5] studying glass fibre laminates, high coefficients of friction for 0° orientations are due to the exposure of fresh fibres to the counterface and low coefficients of friction for 90° orientations are due to the entrapment of soft matrix material in between the fibres oriented perpendicular towards the sliding surface.
It was noticed by Quintelier et al. [6] that 45° glass fibre orientations provide highest friction.
El-Tayeb, I.M.

.%] Element C Mo Ni Fe Mn Cr Si O N Al Ti Nb 0.01 8.8 BASE 0.96 0.47 21.5 0.41 0.08 0.12 0.02 0.03 3.71 The powder was manufactured and supplied by hogonas Metals Ltd., Belgium The microstructures of the as–HIPed blanks were investigated by optical microscopy and scanning electron microscopy (Quanta 200, FEI, Holand).
The elements such as Al and Ti react with the adsorbed oxygen and form their highly stable oxides (Al2O3 and TiO2) at the powder particle surface.
It can be seen from the above table that the yield strength (YS) and ultimate tensile strength (UTS) values of the as-HIPed alloy are higher than those of the hot rolled bar, but the elongation (EL) and reduction of area (RA) are comparable lower.
Tensile properties of Inconel 625 evaluated at room temperature Material condition 0.2% YS [MPa] UTS [MPa] %EL %RA As-HIPed 702 986 12 11.7 Minimum specification values for hot rolled bar[9] 415 825 30 40 Conclusions 1.
Yan. et al., in: wrought superalloy & cast superalloy (Ed. 2), volume 2 of China Aeronautical Materials Handbook, China stardards press, Beijing (2002), pp241 (In Chinese)

Self-Assembled Nanodot Fabrication by Using Diblock Copolymer Miftakhul Huda1,a, You Yin2,b, Sumio Hosaka2,c 1Department of Electronic Engineering, Gunma University 1-5-1 Tenjin-cho, Kiryu 376-8515, Japan 2Department of Production Science and Technology, Gunma University 1-5-1 Tenjin-cho, Kiryu 376-8515, Japan at06305907@gunma-u.ac.jp, byinyou@el.gunma-u.ac.jp, chosaka@el.gunma-u.ac.jp Keywords: nano-patterning, self-assembly, lithography, nanodot, diblock copolymer Abstract.
Kim, et al.: J.
Ross, et al.: J.
Parviz, et al.: IEEE Transactions on Advanced Packaging Vol. 26 (2003), p. 233