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Приказ резултата 1-10 од 289
Polimerna optička vlakna / Polymer optical fibres
(Loznica : Viskoza, 1997)
U ovom radu je dat kratak pregled razvoja polimernih optičkih vlakana, kao i njihova klasifikacija. Takodje, razmatrani su fizički principi optičkih talasovoda i njihove prednosti u odnosu na metalne provodnike. Naročita ...
Dobijanje i svojstva biološki aktivnih vlakana sa fermentativnom aktivnošću / Obtaining and Properties of Biologically-Activated Fibers with Fermentation Activity
(Loznica : Viskoza, 1995)
Fermenti imobilizovani na vlaknastim nosačima nalaze danas najširu primenu u medicini, farmaciji i prehrambenoj industriji. To je uslovljeno visokom efektivnošću i supstratnom specifičnošću biokatalize, lakoćom manipulacije ...
Viskoelastična svojstva koncentrovanih rastvora celuloze u N-metilmorfolin-N-oksidu / Viscoelastic properties of concentrated solutions of cellulose in N-methylmorpholine-N-oxide
(Loznica : Viskoza, 1995)
Između različitih rastvarača za direktno rastvaranje celuloze i primene ovih rastvora za proiuzvodnju hemijskih celuloznih vlakana najperspektivniji je N-metilmorfolin-N-oksid (NMMO). U ovom radu proučavana su visokoelastična ...
Proučavanje sorpcionih svojstava ugljeničnih vlaknastih sorbenata / Study of Sorption properties of Fibrous Carbon Sorbents
(Loznica : Viskoza, 1995)
Ugljenični vlaknasti sorbenti se odlikuju dobrom adsorpcijom gasova i para, kako u statičkim, tako i dinamičkim uslovima i koriste se kao filtracioni materijal. U ovom radu proučavana su sorpciona svojstva ugljeničnim ...
A cobalt(II) complex with ethylenediamine inside zeolite A
(Slovenian Chemical Society, 1994)
Reaction of the partially dehydrated cobalt(II)-exchanged zeolite A (Co-A) with ethylenediamine (en) at 130 C in an autoclave yields after 24 h a product (Coen-A) in which entire Co(II) content (tetrahedrally coordinated ...
A novel triclinically deformed chabazite-like aluminophosphate prepared in the presence of tris(1,2-diaminoethane)nickel(II) chloride
(Elsevier, 1998)
The tris(1,2-diaminoethane)nickel(II) complex was found to be a novel structure-directing agent for the preparation of the chabazite-like AlPO4-34 molecular sieve. During crystallization the complex undergoes a ligand ...
Formability of a high-strength Al Mg6.8 type alloy sheet
(Springer, New York, 1998)
Room temperature formability testing was performed on an AlMg6.8 type alloy sheet with a fully recrystallized structure (average grain diameter similar to 18 mu m) and after partial annealing with a retained deformed ...
(31)P NMR investigation of some microporous zincophosphates
(Serbian Chemical Society, 1996)
High field magic-angle spinning (MAS) (31)P-NMR investigations of novel porous zincophosphates and their cobalt-containing derivatives confirm the framework structure of alternating Zn(Co)O4 and PO4 tetrahedra. The MAS NMR ...
The determination of kinetics parameters of the hydrogen evolution on Ti-Ni alloys by ac impedance
(Pergamon-Elsevier Science Ltd, Oxford, 1997)
The kinetics and mechanism of hydrogen evolution at Ti-Ni alloys electrode has been studied by means of steady-state potentiostatic polarization and ac impedance spectrum measurements. Complex-plane spectrum plots are ...
Room temperature deformation behaviour of A1Mg6.5 alloy sheet
(Carl Hanser Verlag, Munich, 1999)
Room temperature tensile test have been performed with initial strain rates of 6.7 x 10(-4) s(-1), 6.7 x 10(-3) s-(1) and 6.7 x 10(-2) s(-1), on AlMg6.5 alloy sheet, after imposing 5% to 70% cold rolling reductions, and ...