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Effect of thixocasting and heat treatment on the tribological properties of hypoeutectic Al-Si alloy
(Wear, 2008)
This paper presents results of structural, mechanical and tribological tests of thixocast hypoeutectic Al-Si alloy A356 (EN AlSi7Mg0.3). The pin-on-disc tribometer was used to carry out tribological tests under dry sliding ...
Surface resistivity estimation by scanning surface potential microscopy
(Review of Scientific Instruments, 2008)
Nickel was sputter deposited on a glass with a thin film thickness of 600 nm under either in an argon atmosphere or under a partial pressure of nitrogen of either 1.3x10(-4) or 4x10(-4) mbar. Atomic force microscopy and ...
Ferromagnetic properties of the Zn-Mn-Osystem
(Journal of Physics: Condensed Matter, 2008)
Polycrystalline Zn -Mn -O samples with nominal manganese concentration x = 0.01 and 0.10 were synthesized by a solid state reaction route using (ZnC(2)O(4) center dot 2H(2)O)(1-x) and (MnC(2)O(4) center dot 2H(2)O)(x). ...
Micromechanical model for fracture toughness prediction in Al-Zn-Mg-Cu alloy forgings
(Philosophical Magazine, 2008)
An attempt has been made to model the plane-strain fracture toughness, KIc, in Al-Zn-Mg-Cu alloy forgings subjected to overageing. The proposed model, based on the multiple micromechanisms, reveals the quantitative relations ...
Lipoprotein lipase: A bioinformatics criterion for assessment of mutations as a risk factor for cardiovascular disease
(Proteins: Structure Function and Bioinformatics, 2008)
Lipoprotein lipase (LPL) is a key enzyme in lipid metabolism. Decrease of the LPL enzymatic activity leads to elevated triglycerides (TG) and reduced high-density lipoprotein (HDL-C levels), both risk factors for cardiovascular ...
Characterization of electrodeposited powders of the system Ni-Mo-O
(Electrochimica Acta, 2008)
The electrodeposition of the Ni-Mo-O alloy powders from ammonium chloride containing electrolytes for different Ni/Mo ions concentration ratios was investigated by the polarization measurements. The morphology, chemical ...
Fabrication of SiC by carbothermal-reduction reactions of mountain leather asbestos
(Journal of Alloys and Compounds, 2008)
Fibrous magnesium silicate (Mg6Si4O10(OH)s: Mountain leather asbestos) of Serbian origin was used as Si precursor for the Synthesis of SiC by carbothermal-reduction process. As a reducing agent, carbon (from various ...
Surface modification of a WTi thin film on Si substrate by nanosecond laser pulses
(Applied Surface Science, 2008)
Interaction of a nanosecond transversely excited atmospheric (TEA) CO2 laser, operating at 10.6 mm, with tungsten-titanium thin film (190 nm) deposited on silicon of n-type (1 0 0) orientation, was studied. Multi-pulse ...
Standardization and difficulties of the thoron exhalation rate measurements using an accumulation chamber
(Radiation Measurements, 2008)
Standardization of the thoron exhalation measurements is important for the intercomparison of the results among different laboratories. There are a few important distinctions between thoron (Rn-220) and radon (Rn-222) ...
High-speed kinks in a generalized discrete phi(4) model
(Physical Review E, 2008)
We consider a generalized discrete phi(4) model and demonstrate that it can support exact moving kink solutions in the form of tanh with an arbitrarily large velocity. The constructed exact moving solutions are dependent ...