The influence of the concentration of montmorillonite containing sorbent and pH of the culture medium on the antibiotic sensitivity of Escherichia coli, as well as the effect of ground on growth of Escherichia

The aim of this work was the comparative sensitivity test of E. coli to enrofloxacin and doxycycline and bactericidal action of montmorillonite containing sorbent and its combination with enrofloxacin, as well as the influence of the concentration of the enriched montmorillonite containing sorbent and pH of the culture medium on the antibiotic sensitivity of Escherichia coli. The sensitivity test of Escherichia coli to enrofloxacin, and the combination of enrofloxacin with sorbent was performd by the method of double serial dilutions of drugs in a liquid culture mediu

The etiological structure of mass diseases with young gastro and respiratory syndrome

Etiology gastroenteritis and pneumonia animals studied complex, on the basis of epizootic, clinical, pathological data, bacteriological results, serology, hematology, immunobiochemical research method

Environmental aspects of the clay use in industrial and agricultural production

In the course of the last 10 years the scientists from the Chair of General Chemistry of the Belgorod State National Research University have been carrying out an active research in the development of efficient sorbents on the base of native montmorillonite clays in the region in order to purify natural and industrial water

Effective purification of water from iron lons and potentially pathogenic microorganisms using a montmorillonite composite sorbent

The use of the developed composite sorbent based on the plant wastes (sunflower seed husks) and montmorillonite clay was shown to be highly effective for water purification from iron ions and potentially pathogenic microorganisms. It was shown experimentally that the developed composite sorbent at concentrations of up to 50 mg/L is capable of purifying water from iron ions under static and dynamic condition

Enterosorbent based on montmorillonite as a promising tool in the treatment and prevention of intestinal disorders in pigs

The article discusses the treatment and prevention of feed toxicosis of pigs. A composition based on montmorillonite-containing minerals is considered as a promising enterosorbent in combination with the drug vievitin in the treatment of pig dysentery. Studies have shown that the complex use of vievitin with a sorbent by giving individually in 100 ml of drinking water at doses of 5.6 (second group) and 11.1 (third group) mg/kg body weight for vievitin and 400 mg/kg body weight bodies for the sorbent provided a high therapeutic effect in the treatment of piglets suffering from dysentery. Recovery, respectively, was 90.8 an

In-situ temperatures and thermal properties of the East Siberian Arctic shelf sediments: Key input for understanding the dynamics of subsea permafrost

Significant reserves of methane (CH4) are held in the Arctic shelf, but the release of CH4 to the overlying ocean and, subsequently, to the atmosphere has been believed to be restricted by impermeable subsea permafrost, which has sealed the upper sediment layers for thousands of years. Our studies demonstrate progressive degradation of subsea permafrost which controls the scales of CH4 release from the sediment into the water-atmospheric system. Thus, new knowledge about the thermal state of subsea permafrost is crucial for better understanding of the permafrost -hydrate system and associated CH4 release from the East Siberian Arctic Shelf (ESAS) – the broadest and shallowest shelf in the World Ocean, which contains about 80% of subsea permafrost and giant pools of hydrates. Meanwhile, the ESAS, still presents large knowledge gaps in many aspects, especially with respect to subsea permafrost distribution and physical properties of bottom sediments. New field data show that the ESAS has an unfrozen (ice-free) upper sediment layer, which in-situ temperature is −1.0 to −1.8 °C and 0.6оС above the freezing point. On one hand, these cold temperature patterns may be related to the presence of subsea permafrost, which currently primarily occurs in the part of the ESAS that is shallower than 100 m, while ice-bearing sediments may also exist locally under deeper water in the Laptev Sea. On the other hand, the negative bottom sediment temperatures of −1.8 °C measured on the Laptev Sea continental slope sediments underlying water columns as deep as down to 330 m may result from dissociation of gas hydrates or possibly from dense water cascading down from the shelf. In contrast, data collected on recent expeditions in the northern Laptev shelf, zones of warmer bottom temperatures are coinciding with methane seeps, likely induced by seismic and tectonic activity in the area. These warm temperatures are not seen in the East Siberian Sea area, not even in areas of methane seeps, yet with little seismic activity. The thermal conductivity and heat capacity of bottom sediments recorded in the database of thermal parameters for the ESAS areas mainly depend on their lithification degree (density or porosity), moisture content, and particle size distribution. The thermal conductivity and heat capacity average about 1.0 W/(m·K) and 2900 kJ/(m3·K), with ±20% and ±10% variance, respectively, in all sampled Arctic sediments to a sub-bottom interval of 0–0.5 m

INFLUENCE OF THE ENTEROSORBENT ON QUALITY OF EGGS

In this article research the influence of natural montmorillonite containing sorbent used as a mineral supplement in animal feed in an amount of 30 g per 1 kg of sorbent feed on commercial quality table eggs at his dacha hens-layers. Found that feeding hens’ mineral feed additive reduces the toxic chemical elements in a chicken egg. It was found that the weight of the eggs in the experimental group compared to the control group, was significantly increased by 3,5% (

Optical processes in photosynthesis

A review of the state and analysis of works related to optical processes of photosynthesis are given. Particular attention is paid to the work on the investigation of these processes in iridoplasts and chloroplasts with photonic crystal structure. From a general point of view, a photonic crystal (PhC) is a superlattice with a characteristic scale of periodicity of permittivity (refractive indices) of the order of the wavelength of the light wave. In such structures, the forbidden bands occur in the spectrum of electromagnetic waves. This means that in a given spectral range the light of any polarization cannot enter the PhC or exit in any direction. An important property of PhC is high degree of localization of electromagnetic waves on the lattice defects. In this case, defective energy levels manifest themselves in the forbidden zones of the PhC. An atom or molecule emit a quantum with a frequency corresponding to a defective mode. Most of the works dealing with the study of optical processes of photosynthesis have not taken into account the features of light propagation in structures. Periodic structures have been found in the plant and animal world. This paper presents the effect of a long-period structure on the optical properties and local characteristics of light waves, including the transmission and reflection spectrum, as well as the distribution of the electromagnetic field in the layered structure. Based on modern mathematical apparatus, the main spectral and optical characteristics were calculated using the example of a begonia plant. In recent works describing the propagation of light, the long-period structure was not taken into account. However, for the interpretation of the results, concepts (antenna, reaction center, the presence of two photosystems) without a detailed description of the physical nature were introduced. In addition, we had to employ a resonance mechanism for the transfer of excitation energy from the donor molecule to the acceptor molecule and quantum coherence. The analysis of the data obtained within the framework of a unified approach made it possible to explain the mechanism of the effect on photosynthesis, namely, the appearance of two photosystems (division of the stop zone into two parts), the feature of the long-wavelength quantum yield, its amplification (Emerson effect), including the red boundary shift, the efficiency of photosynthesis with additional irradiation and the expansion of the absorption region