Improvement of the Separate Waste Collection System for Office Premises

В работе проведен анализ количества образовавшихся, утилизированных и обезвреженных отходов в Краснодаре и Российской Федерации. Выявлены причины загрязнения окружающей среды отходами и их последствия. Предложены рекомендации по раздельному сбору отходов для офисных помещений.The paper analyzes the amount of generated, disposed and neutralized waste in Krasnodar and the Russian Federation. The causes of environmental pollution by waste and their consequences have been identified. Recommendations on separate waste collection for office premises are proposed

CONTEMPORARY PROBLEMS OF ABDOMANAL DELIVERY

The review examined Cesarean section significance in decrease of perinatal mortality, the problems associated with the increase of abdominal delivery are reflected, purulent-septic complications are accented, risk factors of infection-inflammatory process development in post operational period are analysed, the advantages and disadvantages of contemporary preventive methods of their origin are considered

THE ANALYSIS OF RISK FACTORS OF PURULENT-SEPTIC COMPLICATIONS DEVELOPMENT AFTER ABDOMINAL DELIVERY

Purpose: estimation of risk factors and degree of their significance in infectious-inflammatory processes development after Cesarean section.Materials and methods: the retrospective medical documentation analysis of 2235 cases of operative delivery.Results: it is established that antibiotic prophylaxis at a Cesarean section during the investigated period was carried out without contemporary risk factors, an individual estimation of qualitative-quantitative structure genital tract microflora and its account antibiotic -sensitivity in 16.2 % of cases led to nonspecific inflammatory complications development in the postnatal period. Contemporary risk factors of inflammatory complications development in abdominal delivery are revealed.Summary: it is necessary to accomplish a working out and introduction of contemporary and scientifically proved algorithm of purulent-septic complications prevention after abdominal delivery in work of obstetric permanent establishment, taking into account modern risk factors

The Soviet-American gallium experiment at Baksan

A gallium solar neutrino detector is sensitive to the full range of the solar neutrino spectrum, including the low-energy neutrinos from the fundamental proton-proton fusion reaction. If neutrino oscillations in the solar interior are responsible for the suppressed {sup 8}B flux measured by the Homestake {sup 37}Cl experiment and the Kamiokande water Cherenkov detector, then a comparison of the gallium, chlorine, and water results may make possible a determination of the neutrino mass difference and mixing angle. A 30-ton gallium detector is currently operating in the Baksan laboratory in the Soviet Union, with a ratio of expected solar signal to measured background (during the first one to two {sup 71}Ge half lives) of approximately one. 28 refs

Förster resonance energy transfer between quantum dots and dye immobilized in biopolymer particles

We used high adsorption properties of the cationic biopolymer chitosan to synthesize colloidal polymer particles (average size about 0.3 μm) with immobilized CdTe quantum dots (QDs) and organic dye (erythrosin B). A high local concentration of fluorophores bound to the particles (about 10-3 M), as well as a wide overlap of their optical spectra result in an efficient (up to 80%) Förster resonance energy transfer (FRET) from QDs ensembles to dye molecules. The FRET was registered by both steady-state (quenching of the donor and enhancement of the acceptor fluorescence) and time-resolved methods (decreasing of donor lifetime). The dependence of the transfer efficiency on acceptor concentration was analyzed within the scope of the Förster theory extended for the case of multiple energy transfer configuration. The average distances between the donor and acceptor as well as local concentration of fluorophores within particles were determined. It was demonstrated that the synthesized particles can be used as FRET-based sensitive probes for inter-fluorophore distance calculation within the range of 4 ÷ 9 nm

Förster resonance energy transfer between quantum dots and dye immobilized in biopolymer particles

We used high adsorption properties of the cationic biopolymer chitosan to synthesize colloidal polymer particles (average size about 0.3 μm) with immobilized CdTe quantum dots (QDs) and organic dye (erythrosin B). A high local concentration of fluorophores bound to the particles (about 10 mM), as well as a wide overlap of their optical spectra result in an efficient (up to 80%) Förster resonance energy transfer (FRET) from QDs ensembles to dye molecules. The FRET was registered by both steady-state (quenching of the donor and enhancement of the acceptor fluorescence) and time-resolved methods (decreasing of donor lifetime). The dependence of the transfer efficiency on acceptor concentration was analyzed within the scope of the Förster theory extended for the case of multiple energy transfer configuration. The average distances between the donor and acceptor as well as local concentration of fluorophores within particles were determined. It was demonstrated that the synthesized particles can be used as FRET-based sensitive probes for inter-fluorophore distance calculation within the range of 4 ÷ 9 nm

Synthesis of sulfated starch-casein complex

In this paper, a new method for the synthesis of thesulfated starch-casein complex is proposed. The resulting new complex was characterized by FTIR and UV-spectroscopy. It has been shown by FTIR spectroscopy that both nitrogen atoms and the carboxyl group of amino acid residues are protonated in casein. Thesulfated starch-casein complex obtained in this work may have biological activity, as well as its analogues isolated from plants, fungi, and microorganisms, as well as synthesized in laboratory conditions

Temperature Sensitivity of Water-Soluble CdTe and CdSe/ZnS Quantum Dots Incorporated into Biopolymer Submicron Particles

Polymer particles with sizes 0.3–0.4 μm are synthesized based on chitosan and chondroitin sulfate with incorporated CdTe (core) and CdSe/ZnS (core–shell) quantum dots. Their morphological and spectral properties are investigated by the methods of dynamic scattering, electron microscopy, and absorption and luminescence spectroscopy at temperatures from 10 to 80°С. Spectral effects associated with a change in temperature (a red shift and a decrease in the amplitude of the photoluminescence spectrum) can be explained by the temperature expansion of the quantum dots and activation of surface traps. It is shown that the temperature sensitivity of spectra of the quantum dots incorporated into the biopolymer particles is not less than in water. To develop an optical temperature sensor, the core quantum dots are more preferable than the core–shell quantum dot

Synthesis and characterization of chitosan-based polyelectrolyte complexes doped with xanthene dyes

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