Dušan Kojić

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Interionic distances are shorter in concentrated ionic solutions, thus instigating the interaction and overlap of hydration shells, as ions become separated by only one or two layers of water molecules. The simultaneous interaction of water with two oppositely charged ions has, so far, only been investigated by computer simulation studies, because the(More)
Freezing is usually used for preservation and storage of biological samples; however, this process may have some adverse effects such as cell membrane damage. Aquaporin (AQP), a water channel protein, has been suggested to play some roles for cryopreservation although its molecular mechanism remains unclear. Here we show that membrane damage caused by(More)
In what appears to be a trivial operation in which the averaged spectrum of solvent is subtracted from the spectra of solutions, can be a misleading step in improving reproducibility of vibrational spectra. Near-infrared spectra of pure water and glycine solutions were used to quantify instrumental and spectral variations, and examine its influence on the(More)
The contact lens (CL) industry andmarket have displayed a high level of dynamism in the past few decades, and have evolved into a rapidly changing field in which science and everyday practice constantly interact, not only through broadening of material and product portfolio, but through innovative therapeutic and diagnostic solutions as well. Stable market(More)
An inhomogeneous system of aggregates of Co(3)O(4) nanocrystallites dispersed in an amorphous SiO(2) matrix has been studied. X-ray diffraction and atomic force microscopy reveal a bimodal distribution of crystallite sizes, smaller nanocrystallites with dimension below 10 nm and larger nanocrystallites of about 20 nm. The Co(3)O(4) nanocrystallites enter(More)
BACKGROUND Countries in the World Health Organization (WHO) European Region are reporting more severe influenza activity in the 2015-2016 season compared to previous seasons. OBJECTIVES To conduct a rapid risk assessment to provide interim information on the severity of the current influenza season METHODS: Using the WHO manual for rapid risk assessment(More)
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