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Приказ резултата 11-20 од 179
Određivanje sadržaja teških metala u čajevima sa tržišta u Beogradu, Srbija / Determination of heavy metal concentrations in tea samples taken from Belgrade market, Serbia
(Savez hemijskih inženjera Srbije, 2009)
U ovom radu su ispitivane koncentracije bakra, cinka, mangana, nikla, kadmijuma i olova u uzorcima čajeva (crni, zeleni, nana, kamilica) uzetih iz lokalnih prodavnica u Beogradu u maju 2008. godine. Priprema uzoraka vršena ...
Synthesis of B6 vitamin / Sinteza vitamina B6
(Association of Chemical Engineers of Serbia, 2009)
The importance of vitamin B6 has been known since its discovery in the 1940's. Chemical tests, elestrometric titration determinations, and absorption spectrum studies showed that this vitamin exists in three major chemical ...
Smart hydrogels based on itaconic acid for biomedical application / Inteligentni hidrogelovi na bazi itakonske kiseline za biomedicinsku primenu
(Association of Chemical Engineers of Serbia, 2009)
pH and temperature sensitive hydrogels, based on 2-hydroxyethyl methacrylate (HEMA) and itaconic acid (IA) copolymers, were prepared by gamma irradiation and characterized in order to examine their potential use in biomedical ...
Influence of current and temperature on discharge characteristics of electrochemical nickel-cadmium system / Uticaj struje i temperature na karakteristike pražnjenja elektrohemijskog nikal-kadmijum sistema
(Association of Chemical Engineers of Serbia, 2010)
The paper elaborates determination of characteristic values in the discharging process of non-hermetic nickel-cadmium galvanic battery with nominal voltage Un = 60 V and nominal capacity qn = C5 = 190 A h and its dependence ...
Controlled swelling and degradation studies of alginate microbeads in dilute natrium citrate solutions / Ispitivanje mogućnosti kontrolisanog bubrenja i razgradnje alginatnih mikročestica u razblaženim rastvorima natrijum-citrata
(Association of Chemical Engineers of Serbia, 2010)
Alginate hydrogels are widely used in biomedicine due to alginate availability, hydrophilic nature, biocompatibility and biodegradability. Alginate microbeads are particularly attractive for applications in pharmacy and ...
Obtaining of the antioxidants by supercritical fluid extraction / Izolovanje antioksidanasa postupkom natkritične ekstrakcije
(Association of Chemical Engineers of Serbia, 2011)
One of the important trends in the food industry today is demand for natural antioxidants from plant material. Synthetic antioxidants such as butylated hydroxytoluene (BHT), and butylated hydroxyanisole (BHA) are now being ...
Synthesis and characterization of phencyclidine and its derivatives / Sinteza i karakterizacija fenciklidina i njegovih derivata
(Association of Chemical Engineers of Serbia, 2010)
Phencyclidine (PCP) or 1-phenyl-cyclohexylpiperidine is the best-known representative drug from the compound class of arylcyclohexylamines. On a pharmacological activities basis, it belongs to the family of drugs known as ...
The peculiarities of electrochemical deposition and morphology of Zn-Mn alloy coatings obtained from pyrophosphate electrolyte / Specifičnosti elektrohemijskog taloženja i morfologija Zn-Mn prevlaka dobijenih iz pirofosfatnog elektrolita
(Association of Chemical Engineers of Serbia, 2011)
The first successful attempt to electrodeposit Zn-Mn alloy coatings from alkaline bath was made only a few years ago. In this kind of solution, potassium pyrophosphate (K4P2O7) serves both as a complexing agent and as the ...
Silver/poly(N-vinyl-2-pyrrolidone) nanocomposites obtained by electrochemical synthesis / Srebro/poli(N-vinil-2-pirolidon) nanokompoziti dobijeni elektrohemijskom sintezom
(Association of Chemical Engineers of Serbia, 2011)
Silver/poly(N-vinyl-2-pyrrolidone) (Ag/PVP) nanocomposites were obtained by electrochemical reduction of Ag+ at a constant voltage, by in situ synthesis of silver nanoparticles inside a poly(N-vinyl-2-pyrrolidone) matrix, ...
Immobilization of alginate-PAC on sepabeads EC-HA support / Imobilizacija penicilin-acilaze modifikovane derivatom alginata na sepabeads EC-HA nosač
(Association of Chemical Engineers of Serbia, 2011)
Penicillin acylase (PAC) is an important industrial enzyme for the production of many β-lactam antibiotics. It is capable of catalyzing the hydrolysis of penicillin G (Pen G) to generate phenylacetic acid (PAA) and ...