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Приказ резултата 411-417 од 417
The growth of sapphire single crystals
(Serbian Chemical Society, 2001)
Sapphire (Al2O3) single crystals were grown by the Czochralski technique both in air and argon atmospheres. The conditions for growing sapphire single crystals were calculated by using a combination of Reynolds and Grashof ...
Ion/surface collisions: An alternative to gas-phase collisional activation in mass spectrometry
(Serbian Chemical Society, 2001)
Collisions of ions at solid surfaces result in a number of phenomena, of which surface-induced dissociation (SID) is the most important. SID has been shown to be a viable alternative to collision-induced dissociation (CID) ...
Damage Level Estimate of API J55 Steel for Welded Seam Casing Pipes
(Strojarstvo, 2009)
The subject of this paper is investigation of the damage level of API J55 steel, used for manufacturing casing pipes by high frequency (HF) contact welding. The analysed pipe was withdrawn after about 70 000 hours of service ...
Primary and secondary dendrite spacing of Ni-based superalloy single crystals
(Serbian Chemical Society, 2009)
Ni-based superalloy single crystals were grown by different methods (gradient method and Bridgman technique with spontaneous nucleation and with seed). In all crystal growth experiments using the Bridgman technique, the ...
Oxygen reduction at platinum nanoparticles supported on carbon cryogel in alkaline solution
(Srpsko hemijsko društvo, Beograd, 2007)
The oxygen reduction reaction was investigated in 0.1 M NaOH solution, on a porous coated electrode formed of Pt particles supported on carbon cryogel. The Pt/C catalyst was characterized by the X-ray diffraction (XRD), ...
Reinvestigation of Sr2 [Cu(OH)6]
(International Union of Crystallography, 2009)
During an investigation of the SrO-CuO-P2O5-H 2O system, single crystals of distrontium hexa-hydroxido-cuprate(II), Sr2 [Cu(OH) 6], were obtained by the hydro-thermal method. The blue prismatic crystals of Sr2 [Cu(OH) 6] ...
Experimental and numerical evaluation of a steamline behaviour using local approach
(Croatian Metallurgical Society, 2007)
Results of the experimental and numerical comparative analysis of steamline pipes have been presented. New pipes and the pipes used for more than 117,000 hours at 540 degrees C under pressure of 42 bars have been simultaneously ...