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Prikaz rezultata 11-20 od 61
Xanthones from Swertia punctata
(Oxford : Pergamon-Elsevier Science Ltd., 2002)
Isolation of 1-O-primeverosyl-3,8-dihydroxy-5-methoxyxanthone and 1-O-gentiobiosyl- 3,7-dimethoxy-8-hydroxyxanthone, along with five known xanthones, isobellidifolin, methylbellidifolin, isoswertianin, methylswertianin and ...
The application of modified macroporous poly(GMA-co-EGDMA) in the metal ions sorption from aqueous solutions / Primena modifikovanog makroporoznog poli(GMA-co-EGDMA) kopolimera u sorpciji jona metala iz vodenih rastvora
(Tehnika - Novi materijali, 2002)
Macro porous cross linked poly(GMA-co-EGDMA) copolymer synthesized by radical suspension copolywerization was modified by ring-opening reaction of the pendant epoxy groups with ethylene diamine, EDA. Sorption capacities ...
Adsorption and corrosion inhibitive properties of some organic molecules on iron electrode in sulfuric acid
(Elsevier, 2002)
Adsorption and corrosion inhibitive properties of three different organic molecules: 2-naphthalenesulfonic acid, 2,7-naphthalenedisulfonic acid and 2-naphthol-3,6-disulfonic acid are investigated on Armco-iron electrode ...
Composition and antibacterial activity of Achillea asplenifolia essential oil
(Allured Publ Corp, Carol Stream, 2002)
The oil of a wild growing population of Achillea asplenifolia Vent. was studied for yield, composition and antibacterial activity. The major components in the oil were beta-caryophyllene (17.6%), germacrene D (15.6%) and ...
An estimation of the interfacial energy of the copper-copper sulphate solution interface and of the specific surface of copper powder / Procena međupovršinske energije bakar-rastvor bakar sulfata i specifične površine bakarnog praha
(Serbian Chemical Society, 2002)
Apossible way for the estimation of the interfacial energy of the copper – copper sulphate solution interface is proposed. The estimated value of (2.7±0.3) J cm-2 and the derived equations which relate the specific surface ...
Polymorphic transformations of edible vegetable fats / Polimorfne transformacije jestivih biljnih masnoća
(Tehnološki fakultet, Naučni institut za ratarstvo i povrtarstvo i DOO "Industrijsko bilje", Novi Sad, 2002)
Triglycerides are characterized by complex melting behaviour, as reflected by multiple melting temperatures. They can solidify in different crystal structures and this polymorphism can be defined as the ability to reveal ...
The roughness analysis of metal coatings by STM technique: Part II: Analysis of zinc coatings / Analiza hrapavosti galvanskih prevlaka tehnikom skenirajuće tunelske mikroskopije - deo II - analiza prevlaka cinka
(Belgrade, Serbia : Engineering Society for Corrosion, 2002)
In this work is given the analysis of roughness of zinc coatings electrodeposited from a sulfate bath in the presence of dextrin and 2-hidroxi-benzaldehyde, by methodology which is described in part I of this work. It was ...
Mixed steroidal 1,2,4,5-tetraoxanes: Antimalarial and antimycobacterial activity
(American Chemical Society (ACS), 2002)
Mixed 1,2,4,5-tetraoxanes possessing simple spirocycloalkane and spirocholic acid-derived substituents were prepared and shown to have significantly higher in vitro antimalarial activity than bis-substituted tetraoxanes. ...
Oxide electrocatalytic coatings obtained by the sol-gel procedure: Preparation and characterization / Oksidni elektrokatalizatori dobijeni sol-gel postupkom - dobijanje i karakterizacija
(Association of Chemical Engineers of Serbia, 2002)
The influence of different parameters (forced hydrolysis duration in the preparation of sols, alcohol addition in the sol mixture for application, as well as sol/alcohol mixture ageing time) on the morphology and electrochemical ...
Hydride reduction of B-norcholestane 5α,6α-epoxide / Hidridna redukcija B-norholestan 5α,6α-epoksida
(Serbian Chemical Society, 2002)
B-Norcholestane epoxide 2 is reduced with lithium aluminium hydride to give either the 3β,6α-diol 3 or the corresponding 3β,5α-diol 4, depending on the quality of the reducing reagent employed. Aplausible mechanistic ...