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Effect of Exploitation Conditions and Flaw Geometry on the Load Carrying Capacity of Casing Pipes for Oil Drilling Rigs
(Trans Tech Publications Ltd, Durnten-Zurich, 2014)
The subject of this work is examination of API J55 steel casing pipes manufactured by high frequency (HF) contact welding. Since the pipes were withdrawn after about 70 000 hours of service in an oil drilling rig, the ...
Empirijski kinetički model hidrolize proteina belanceta pretretiranih ultrazvučnim talasima visoke frekvencije
(Čačak : Agronomski fakultet, 2014)
U ovom radu ispitivan je uticaj koncentacije enzima, supstrata i temperature
na početnu brzinu reakcije hidrolize proteina belanceta katalizovane Alkalazom 2,4 L
(proteaza iz Bacillus licheniformis). Glavni cilj ovog ...
Influence of amine activators and reaction parameters on grafting reaction between polystyrene and starch
(Springer, Dordrecht, 2014)
Polystyrene graft corn starch copolymers (PS-g-starch) were synthesized by emulsion polymerization using sodium dodecylsulfate (SDS) as the emulsifier and potassium persulfate (PPS) as the initiator. Influences of temperature ...
Service life test of the NiSn coatings as cathodes for hydrogen evolution in industrial chlor-alkali electrolysis
(Pergamon-Elsevier Science Ltd, Oxford, 2014)
In this work the "service life test" (SLT) of the NiSn alloy coatings as cathodes for the hydrogen evolution reaction (HER), deposited onto Ni 40 mesh at different current densities from the bath containing 0.1 mol dm(-3) ...
Lipase-Catalyzed Esterification of Phloridzin: Acyl Donor Effect on Enzymatic Affinity and Antioxidant Properties of Esters
(Amer Chemical Soc, Washington, 2014)
Lipase-catalyzed acylation of phloridzin with a wide range of fatty acids and antioxidant activities of synthesized esters were investigated in this study. Polar solvents were suitable reaction media for esterification, ...
Identification of phases formed by Cu and Ni in Al-Si piston alloys
(Associazione Italiana di Metallurgia, 2014)
This paper presents the results of identifying and analyzing the phases present in the microstructure of 4 aluminum piston alloys with different chemical composition. Optical microscopy and scanning electron microscopy ...
The potential application of TiO2/hydrogel nanocomposite for removal of various textile azo dyes
(Elsevier, Amsterdam, 2014)
TiO2/hydrogel nanocomposite has been utilized for investigation of photocatalytic degradation of three different groups of anionic azo dyes in aqueous solutions under solar light simulating source in order to evaluate its ...
Dislocation glide-controlled room-temperature plasticity in 6H-SiC single crystals
(Elsevier Ltd, 2014)
In situ transmission electron microscopy observations of uniaxial compression of sub-300 nm diameter, cylindrical, single-crystalline 6H-SiC pillars oriented along 〈0001〉 and at 45° with respect to 〈0001〉 reveal that plastic ...
Pd black decorated by Pt sub-monolayers as an electrocatalyst for the HCOOH oxidation
(Springer, New York, 2014)
Pd black was modified by a very low amount of Pt corresponding to a sub-monolayer (ML). Spontaneous displacement method was employed. The catalysts with 0.02-0.12 ML were characterized by cyclic voltammetry and COads ...
Preparation of cellulosic fibers with biological activity by immobilization of trypsin on periodate oxidized viscose fibers
(Springer, Dordrecht, 2014)
In this study, a biologically active fibrous material was designed by immobilizing trypsin on viscose fibers. The viscose yarn was first oxidized with sodium periodate to produce aldehyde groups and then employed as a ...