Andrey I Konstantinov

Learn More
A method to enumerate labile hydrogens in all constituents of molecular ensemble of natural organic matter (NOM) based on our previously developed simple hydrogen/deuterium (H/D) exchange (electrospray ionization (ESI) ion source (Kostyukevich et al. Anal. Chem. 2013, 85, 5330) and ultra-high-resolution Fourier transform ion cyclotron resonance mass(More)
The ability of white rot basidiomycetes Trametes hirsuta and Trametes maxima to transform coal humic substances (HS’s) under the conditions of solid phase cultivation in the presence or absence of an easily available source of carbon (glucose) has been studied. It was shown that during the growth of the fungal strains used in media containing HS’s,(More)
Experimental data on the echolocation system parameters of Barbastella barbastella are reported. They include the parameters of orientation pulses, auditory frequency-threshold curves and characteristics of reception directionality of the external ear. It is demonstrated that the hearing system of this bat species has two hypersensitivity regions, which are(More)
The objective was to estimate suitability of humics-modified silica gels for adsorptive removal of the Direct Brown 1 trisazo dye from aqueous phase. The major advantage of the proposed adsorbents is that of an ecologically sound procedure of immobilizing silanized humic derivatives onto silica gel in aquatic solutions. The silanized humic derivatives, in(More)
During the flight, the greater horse-shoe bat R. ferrumequinum decreases the frequency in the medial part of the emmited signal in proportion to the relative target--bat velocity. The value of the decrease is approximately equal to the Doppler shift; as a result, the animal picks up the echo at its species specific frequency irrespectively of the flight(More)