Chemistry & Biodiversity
(Wiley-VHCA AG, Zurich, Switzerland)
• 07 May 2019
Dekić, Biljana • Ristić, Milenko • Ristić, Novica • Mladenović, Marko • Dekić, Vidoslav • Ranđelović, Vladimir • Radulović, Niko
Some carnation species (Dianthus spp., Caryophyllaceae) exhibit a strong resistance to drought stress that is connected with the increased surface wax formation. Wax composition is unknown for the majority of Dianthus spp. Herein, mass spectral and gas chromatographic data, in combination with synthesis and chemical transformations (transesterification and synthesis of dimethyl disulfide adducts), enabled the identification of 151 constituents of diethyl-ether washings of fresh flowers of Dianth ...
Physical Chemistry 2018, 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Belgrade
• 01 Apr 2024
Vukojević, Vesna • Đurđić, Slađana • Jevtić, Sonja • Pergal, Marija • Petković, Branka • Stanković, Dalibor
In this work, for the first time, we proposed electrochemical behavior and development of analytical procedure for quantification of pesticide azamethiphos, using boron doped diamond (BDD) electrode. It was found that azamethiphos electrochemical behavior is irreversible oxidation at potential of around 1.70 V, in 1 M nitric acid. Square wave voltammetric technique was most appropriate for azamethiphos quantification. Under optimized experimental conditions linear working range from 2 to 1ОО μ ...
Chemistry & Biodiversity
• 25 Oct 2018
Ristić, Milenko • Radulović, Niko • Dekić, Biljana • Dekić, Vidoslav • Ristić, Novica • Stojanović-Radić, Zorica
Nine unsymmetrical azines containing a coumarin moiety were prepared by the reaction of the hydrazone of 4-hydroxy-3-acetylcoumarin with differently substituted aromatic aldehydes. The azines were fully spectrally characterized, including a complete assignment of 1H- and 13C-NMR resonances, and were assessed for their acute toxicities in the Artemia salina model. Their free radical scavenging activities were tested in the DPPH assay, and in vitro antimicrobial activities were determined against ...
Zeitschrift für Kristallographie - New Crystal Structures
• 14 Oct 2019
Dekić, Vidoslav • Rodić, Marko • Radulović, Niko • Ristić, Milenko • Dekić, Biljana • Gurešić, Dejan • Ristić, Novica
C16H12N2O4, triclinic, P1 (no. 2), a = 10.7105(5) Å, b = 11.2685(5) Å, c = 13.0145(6) Å, α = 99.292(4)°, β = 109.607(4)°, γ = 96.771(4)°, V = 1435.01(12) Å3, Z = 4, Rgt(F) = 0.0427, wRref(F2) = 0.1124, T = 295(2) K.
CCDC no.: 1957160
Czech Journal of Food Sciences
• 25 Oct 2019
Živić, Nebojša • Milošević, Slaviša • Dekić, Vidoslav • Dekić, Biljana • Ristić, Novica • Ristić, Milenko • Sretić, Ljiljana
The content of phytochemicals, total phenolics, total flavonoids and antioxidant potential of extracts of Juniperus communis L. and Juniperus oxycedrus L. berries were determined. Ethanol, ethyl acetate and chloroform were used for the process of extraction. Phytochemical monitoring was based on already known methods, while in vitro antioxidant activities were done by DPPH assay. Phytochemical screening showed a wide spectrum of phytochemicals. Ethanolic extract of Juniperus communis L. possesse ...
Zeitschrift für Kristallographie - New Crystal Structures
• 08 May 2019
Ristić, Milenko • Rodić, Marko • Radulović, Niko • Dekić, Biljana • Dekić, Vidoslav • Ristić, Novica • Gurešić, Dejan
C22H18O10Zn, triclinic, P1̄ (no. 2), a = 7.9616(3) Å, b = 9.5386(3) Å, c = 14.2569(4) Å, α = 81.713(3)°, β = 82.724(3)°, γ = 73.103(3)°, V = 1021.03(6) Å3, Z = 2, Rgt(F) = 0.0223, wRref(F2) = 0.0603, T = 295(2) K.
CCDC no.: 1905428
Applicable Analysis and Discrete Mathematics
(University of Belgrade - School of Electrical Engineering)
• 26 Oct 2021
Najdanović, Marija • Velimirović, Ljubica • Rančić, Svetozar
In this paper we consider infinitesimal bending of the second order of curves
and knots. The total torsion of the knot during the second order infinitesimal
bending is discussed and expressions for the first and the second variation of
the total torsion are given. Some examples aimed to illustrate infinitesimal
bending of knots are shown using figures. Colors are used to illustrate torsion
values at different points of bent knots and the total torsion is numerically
calculated.
Mediterranean Journal of Mathematics
(Birkhaeuser Verlag AG)
• 11 May 2022
Najdanović, Marija • Velimirović, Ljubica • Vesić, Nenad
Infinitesimal deformations of subspaces of a generalized Riemannian
space are studied in this paper. Variations of some geometric
objects are found. Necessary and sufficient conditions which provide the
existence of a geodesic infinitesimal deformation of a generalized Riemannian
space are obtained. Basic equations of a geodesic infinitesimal
deformation such as a system of differential equations which determined
an infinitesimal deformation field are given.
Filomat
(Faculty of Sciences and Mathematics, University of Niš)
• 01 Jan 2019
Rančić, Svetozar • Najdanović, Marija • Velimirović, Ljubica
In this paper we consider first order infinitesimal bending of curves and knots. The total
normalcy of the knot during the first order infinitesimal bending is discussed and expressions for the first variation of the total normalcy are given. Some examples aimed to illustrate infinitesimal bending of knots are shown using figures. Colors are used to illustrate normalcy values at dierent points of bent knots and the total normalcy is numerically calculated.
Journal of Knot Theory and Its Ramifications
(World Scientific Publishing Co. Pte. Ltd.)
• 12 Sep 2019
Kauffman, Louis • Velimirović, Ljubica • Najdanović, Marija • Rančić, Svetozar
We discuss the infinitesimal bending of curves and knots in R3. A brief overview of the results on the infinitesimal bending of curves is outlined. Change of the Willmore energy, as well as of the Möbius energy under infinitesimal bending of knots is considered. Our visualization tool devoted to visual representation of infinitesimal bending of knots is presented.
