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Now showing items 31-40 of 45
The effect of temperature on strain-rate sensitivity in high strength Al-Mg alloy sheet
(Elsevier Science Sa, Lausanne, 2002)
Comprehensive experimental work performed to assess the temperature and strain-rate affected deformation behaviour of commercial AlMg6 type, 1.0 mm thick annealed sheet. Elevated temperature tension test performed at ...
Gain optimization in electrically pumped AlGaAs quantum cascade lasers
(Optical Soc Amer, Washington, 2002)
The design of the active region of a current-pumped quantum-cascade laser to achieve maximal gain is proposed. Starting with an arbitrary smooth potential, a family of isospectral Hamiltonians with a predefined energy ...
Synthesis and structure of colloidal bimetallic nanocrystals: the non-alloying system Ag/Co
(American Chemical Society, 2002)
Monodisperse bimetallic Ag/Co composite nanocrystals have been prepared using colloid chemistry methods. Transmission electron microscopy showed well isolated Ag/Co particles centered around 12 nm in diameter. The composition ...
Formation of nanocrystalline transition-metal ferrites inside a silica matrix
(Wiley, Hoboken, 2002)
Nanocrystalline transition-metal ferrites were synthesized inside an amorphous silica matrix by the sol-gel method. The formation of spinel ferrites began above 400degreesC, giving fine particles of about 10 nm at 800degreesC. ...
Analysis of the transferability of micromechanical parameters of damage of steel under the conditions of ductile-fracture initiation
(Springer, New York, 2002)
For the description of the mechanical behavior of a cracked material, we use a macromechanical model of fracture based on the well-known criterion of plastic yield for porous materials. This model is realized as a computational ...
The estimation of solid copper surface tension in copper sulfate solutions
(Journal of the Serbian Chemical Society, 2002)
In metal electrodeposition in the limiting diffusion current density range, the deposition current density remains constant regardless of the deposition overpotential used, At the same time, die larger the deposition ...
Speciation of water-soluble organic aerosol at Skukuza, South Africa, during SAFARI 2000
(Book of Abstracts / 10th scientfic conference of the international association of meteorology of atmospheric sciences (IAMAS) commission for atmospheric chemistry and global pollution (CACGP), 7th scientific conference of the international global atmospheric chemistry project (IGAC) - Joint International Symposium on Atmospheric Chemistry within the Earth System: From Regional Pollution to Global Climate Change, September 18-25 (2002) Crete, Greece, 2002)
Hydrogen evolution reaction from EDTA solutions
(4th Conference of the Yugoslav Materials Research Society, 2002)
An attempt was made to investigate the mechanism and kinetics of hydrogen evolution reaction on zinc and platinum wire electrodes from solutions containing ethylene diamine tetraacetic acid (EDTA). EDTA is a tetra-basic ...
Optical fibers with composite magnetic coating
(Elsevier, 2002)
The goal of these investigations was to define the process parameters that enable the formation of a composite coating with the most uniform thickness on an optical fiber. The composite coating was obtained by drawing the ...
Chevron defect at the intersection of grain boundaries with free surfaces in Au
(American Physical Society, 2002)
We have identified a new defect at the intersection between grain boundaries and surfaces in Au using
atomic resolution transmission electron microscopy. At the junction line of 90
h110i tilt grain boundaries
of ...