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Приказ резултата 241-250 од 270
Synthesis and Characterization of Novel Urethane-Siloxane Copolymers with a High Content of PCL-PDMS-PCL Segments
(Wiley-Blackwell, Malden, 2011)
Novel polyurethane copolymers derived from 4,4'-methylenediphenyl diisocyanate (MDI), 1,4-butanediol (BD) and alpha, omega-dihydroxy-[poly(caprolactone)-poly (dimethylsiloxane)-poly(caprolactone)] (a, x-dihydroxy( ...
Numerical simulation of the plunge stage in friction stir welding / Numerička simulacija faze uranjanja kod zavarivanja trenjem mešanjem
(Society for Structural Integrity and Life, Institute for Material Testing, 2011)
This paper investigates the plunge stage using numerical modeling. A three-dimensional finite element model (FEM) of the plunge stage is developed using the commercial code ABAQUS to study the thermo-mechanical processes ...
Electrochemical synthesis and corrosion behavior of thin polyaniline film on mild steel, copper and aluminum
(Belgrade : Association of the Chemical Engineers of Serbia, 2011)
The electrochemical synthesis of polyaniline (PANI) on mild steel, aluminum and copper from the sodium benzoate solutions has been investigated. It has been shown that thin, highly adherent, polyaniline films on the ...
Thermal comfort behavior of hemp based knitted fabrics / Ponašanje pletenina na bazi konoplje u pogledu toplotnog komfora
(Univerzitet u Nišu - Tehnološki fakultet, Leskovac, 2011)
The hemp fibres production is characterized by sharp ups and downs, from the extensively growing to their decline in the past decades. Thanks to the unique hemp fibre properties, such as physiological, hygienic and ecological ...
Mogućnosti proizvodnje suplemenata sa antioksidativnom aktivnošću od otpadne kafe / Production Possibilities of Supplements With Antioxidant Activity From Waste Coffee
(Udruženje za medicinu sporta SrbijeKatedra za bromatologiju, Farmaceutski fakultet Univerziteta u Beogradu, 2011)
Kafa obiluje antioksidansima koji pozitivno utiču na metaboličke procese u organizmu, oslobađajući ga štetnih slobodnih radikala. Utvrđena su takođe I izvesna antitumorna, antialergijska i antiinflamatorna svojstva kafe. ...
Synthesis and swelling behavior of polyurethane networks based on hyperbranched polymer
(Hemijska industrija, 2011)
A series of six polyurethane (PU) networks was synthesized from Boltorn (R) hydroxy-functional hyperbranched polyester (HBP) of the second pseudo generation as a cross-linking agent, alpha,omega-dihydroxy-(ethylene ...
Preparation and characterization of pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid
(Wiley-Blackwell, Hoboken, 2011)
Novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid were prepared in two steps. Chitosan was first ionically crosslinked with itaconic acid, after which a free radical polymerization and ...
Komparativno ispitivanje otpornosti tkanina prema abraziji / Comparative investigation of woven fabrics abrasion resistance
(Savez inženjera i tehničara tekstilaca Srbije, 2011)
U ovom radu ispitivana je otpornost tkanina prema abraziji upotrebom Martindale-ovog uređaja. Otpornost tkanina prema abraziji ocenjena je primenom standardizovane Martindale-ove metode koja podrazumeva, sa jedne strane, ...
Structural characterization of self-assembled ZnO nanoparticles obtained by the sol-gel method from Zn(CH3COO)(2)center dot 2H(2)O
(IOP Publishing Ltd, Bristol, 2011)
Zinc oxide nanopowders were synthesized by the sol-gel method from an ethanol solution of zinc acetate dihydrate. Detailed structural and microstructural investigations were carried out using x-ray diffraction, Raman ...
The effect of boron incorporation on the structure and properties of glassy carbon
(Elsevier Ltd., 2011)
Boron was introduced into glassy carbon by chemical modification and by irradiating the precursor polymer with boron ions. Using chemical modification, a polymer with uniform distribution of boron in the bulk was obtained, ...