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Приказ резултата 31-40 од 97
Characterization of the catalysts by means of an oscillatory reaction
(CRC Press, 2005)
One of the most known physical chemists Wilhelm Ostwald defined catalyst as a substance that participates in a particular chemical reaction and thereby increases its rate but without a net change in the amount of that ...
The influence of the association patterns of phosphorus-substrates and xylene-substrates on the degradation of xylenes in an alluvial aquifer / Asocijacije ksilen-supstrat odnosno fosfor-supstrat u aluvijalnom akviferu i njihov uticaj na in situ degradaciju ksilena
(Serbian Chemical Society, 2005)
The association patterns of xylene and of total phosphorus with sediment constituents in an alluvial aquifer consisting of clays and sands which had been contaminated by a spill of technical grade xylene were investigated ...
Investigation of the effects of Ar plasma etching in Si surface by photoacoustic method
(EDP Sciences, 2005)
The effects of Ar plasma treatment on the Si surface were investigated by photoacoustic spectroscopy and atomic force microscopy. We studied the surface structure as a function of plasma experimental parameters to correlate ...
Nanocomposite permanent magnetic materials Nd-Fe-B type: The influence of nanocomposite on magnetic properties
(Technical Faculty, Bor, 2005)
The influence on the magnetic properties of nanocristalline ribbons and powders has character of microstructure, between others – the grain size volume of hard and soft magnetic phases and their distribution. Magnetic ...
Microstrip attenuator on silicon substrate with a compact EBG (or PBG) cell
(Telsiks 2005, Proceedings, Vols 1 and 2, 2005)
In this paper a new type of lambda/4 attenuator on silicon substrate is simulated, fabricated and measured. A lambda/4 open microstrip stub is realized as an EBG (or PBG) cell. Reduction of the central attenuator frequency ...
Magnetic properties of ND Rich Melt-Spun ND-FE-B alloy
(International Institute for the Science of Sintering, Beograd, 2005)
As a part of these experimental investigations of melt-spun Nd-Fe-B alloy with Nd rich content in relation to Nd2Fe14B prepared by rapid quenching process for optimally selected cooling rate and heat treatment, the influence ...
Slow-wave EBG microstrip rat-race hybrid ring
(Iee-Inst Elec Eng, Hertford, 2005)
A new type of slow-wave EBG microstr p rat-race hybrid ring is presented. It effectively reduces the occupied area to 11% of the conventional rat-race hybrid ring. It does not need any impedance transformers on the ports.
Determination of thermodynamic properties of macroporous glycidyl methacrylate-based copolymers by inverse gas chromatography
(Wiley, Hoboken, 2005)
Macroporous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (PGME) was synthesized by suspension copolymerization and modified by ring-opening reaction of the pendant epoxy groups with ethylene ...
Flowability of electrolytic copper powder
(Trans Tech Publications Ltd, Durnten-Zurich, 2005)
The surface structure of powder particles, which allows free flow of copper powder, was examined. It has been shown that a sufficiently dense surface structure which permits free flow will be obtained if apparent density ...
Synthesis of (-)-cytoxazone and (+)-epi-cytoxazone: The chiral pool approach
(Taylor & Francis, 2005)
Immunomodulator (-)-cytoxazone and its epimer (+)-epi-cytoxazone were synthesized starting from (D)-(-)-4-hydroxyphenylglycine. Homologation of the amino acid was achieved via the corresponding aldehyde, by a cyanohydrin ...