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Приказ резултата 11-20 од 417
Immobilization of invertase on a new type of macroporous glycidyl methacrylate
(Kluwer Academic Publ, Dordrecht, 2001)
Invertase was immobilized via its carbohydrate moiety. The immobilized enzyme has a specific activity of 5500 IU g(-1), with 45% activity yield on immobilization. In a packed bed reactor, 90% 2.5 M sucrose was converted ...
Mass spectrometry analysis of polychlorinated biphenyls: Chemical ionization and selected ion chemical ionization using methane as a reagent gas
(Serbian Chemical Society, 2000)
In the present paper a quadrupole ion trap mass spectrometer, coupled with a gas chromatograph, was used to compare the electron impact ionization (El) and chemical ionization (Cl) technique, in terms of their selectivity ...
Influence of texturing conditions on characteristics and dyeing behaviour of polyamide 66 yarn
(Niscair, 2004)
The influence of texturing parameters, such as draw ratio and heater temperature, on characteristics and dyeing behaviour of polyamide 66 yam has. been studied. It is observed that the draw ratio and heater temperature ...
Trans- and cis-resveratrol concentration in wines produced in Serbia / Koncentracija trans- i cis-rezveratrola u vinima proizvedenim u Srbiji
(Serbian Chemical Soc, Belgrade, 2008)
Resveratrol, which occurs in two isomeric forms, trans and cis, is a phytoalexin with numerous pharmacological activities, such as anti-cancer, antiviral, neuroprotective and anti-aging. Red wine is the main source of the ...
Characterization of a surface modified carbon cryogel and a carbon supported Pt catalyst
(Journal of the Serbian Chemical Society, 2007)
A carbon cryogel, synthesized by carbonization of a resorcinol/formaldehyde cryogel and oxidized in nitric acid, was used as catalyst Support for Pt nanoparticles. The Pt/C catalyst was prepared by a modified polyol synthesis ...
Study of quantitative structure-retention relationships for s-triazine derivatives in different RP HPTLC systems
(Akadémiai KiadóSpringer, 2005)
Quantitative structure-retention relationships (QSRR) have been used to study the chromatographic behavior of some s-triazines. Retention factors, RM0, on C18 layers corresponding to zero percent organic modifier in the ...
Excess molar volumes of N-methylacetamide + tetrahydrofuran, +2-butanone, +ethylacetate at the temperatures between 303.15 K and 318.15 K
(Elsevier, 2005)
Excess molar volumes, V m E , of N-methylacetamide (NMA) + tetrahydrofuran (THF), NMA + 2-butanone (B) and NMA + ethylacetate (EA) have been determined at the temperatures: 303.15 K, 308.15 K, 313.15 K, 318.15 K. The results ...
Diversity of the human gastrointestinal microbiota
(Teknoscienze Publ, Milano, 2007)
Our gastro-intestinal tract is populated by reportedly the densest microbial ecosystem that is essential for the digestion of foods and affects health. The basic understanding of the human microbiota is rapidly expanding ...
A tissue-implant reaction associated with subcutan implantation of alpha-tricalcium phosphate, dental ceramic and hydroxyapatite bioceramics in rats / Tkivo-implant reakcija povezana sa subkutanom implantacijom alfa-trikalcijum fosfata, dentalne keramike i hidroksiapatit biokeramike kod pacova
(Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd, 2008)
Calcium phosphate ceramics are among the more commonly used and biocompatible ceramics. Recently, we have synthesized a new calcium phosphate ceramic, alpha tricalcium phosphate (aTCP). The aim of this study was to assess ...
The alcoholysis of 1,2,2-trimethylpropyl-methylfluorophosphonate / Alkoholiza 1,2,2-trimetilpropil-metilfluorofosfata
(Serbian Chemical Society, Belgrade, 2000)
The alcoholysis of 1,2,2-trimethylpropyl-methylfluorophosphonate (soman) was examined with a series of alkoxides and in corresponding alcohols: methanol, ethanol, 1-propanol, 2-propanol, 2-methoxyethanol and 2-ethoxyethanol. ...