POSSIBILITY OF BURNING PEAT PELLETS AT COMBINED HEAT AND POWER PLANTS

Expansion of use of local types of fuel and energy resources is presented as one of the priority directions of the energy strategy of Russia for the perspective period. Development of extraction of peat in the Kirov region and a possibility of his use for receiving pellet with the subsequent burning at combined heat and power plant is one of the possible directions of the region's energy development.Расширение использования местных видов топливно- энергетических ресурсов представлено как одно из приоритетных направлений энергетической стратегии России на перспективный период. Развитие добычи торфа в Кировской области и возможность его использования для получения пеллет с последующим сжиганием на ТЭЦ является одним из возможных направлений развития энергетики региона

The influence of the scale effect on the connected porosity in Bashkirian limestones

© 2020 IOP Publishing Ltd. All rights reserved. The concepts of the representative elementary volume and the scale effect for terrigenous and carbonaceous reservoirs have been considered. Various approaches of representative elementary volume calculations have been investigated. The whole core segment connected porosity is evaluated in two ways using the 7.3 cm diameter core samples in the first approach and the core samples 10 cm long by 3 cm in diameter in the second way. Logging porosity data and core samples values have been studied to identify optimal core sizes for the estimation of the relationship between core and well log data

EFFECT OF METHODS OF IMMOBILIZATION OF ERYTHROPOIETIN ON THE SENSITIVITY FOR THE DETECTION OF SPECIFIC IgG TO EPO IN EXPERIMENTAL ANIMALS SERA

Aim. The study of the effect of the erythropoietin coating procedure on sensitivity using the same secondary detection methods to quantify anti-EPO IgG positive animal sera. Materials and methods. Sera from experimental animals - rabbits and guinea pigs - after rhEPO injection were used. The methods includes directly coated ELISA and two types of immunochemical immobilization: capturing biotinylated rhEPO on streptavidin coated microtiier plates and capturing rhEPO via a specific antibody Results. Immunochemical rhEPO immobilization results in a sensitivity from 2 to 10 of magnitude higher than direct coating of rhEPO. Conclusion. Our findings show that the method of rhEPO immobilization to microtiter plates is a critical determinant for the sensitivity of ELISA used for measuring anti-EPO antibodies. Assays in which rhEPO was captured via a specific mAb, or in which biotinylated rhEPO was captured via streptavidin, are preferred to detect serum antibodies to native structural state

Measurement of Dispersion Characteristics of Integrated Optical Microresonators and Generation of Coherent Optical Frequency Combs

Optical frequency combs are a unique tool for fundamental metrology, spectroscopy, and a broad spectrum of applications. High-Q microresonators serve as a promising platform for the generation of coherent frequency combs. The key characteristics that determine the properties of an optical frequency comb are the microresonator dispersion parameters. We have developed and verified an original technique that allows one to measure the dispersion coefficients with a high accuracy for both crystalline and integrated microresonators with the free spectral ranges from gigahertz to terahertz. We demonstrate the generation of a soliton optical frequency comb in an integrated microresonator pumped by a laser diode in the self-injection locking regime at a wavelength of 1.55 mu m and show that its spectral characteristics closely correspond to the measured microresonator dispersion parameters

Regio- and Chemoselective Bromination of 2,3-Diarylcyclopent-2-en-1-ones

The bromination of 2,3-diarylcyclopent-2-en-1-ones under various conditions has been studied. It was found that depending on the brominating reagent and nature of solvent the bromine atom can be introduced at the 4- or 5-position of the ethene “bridge”, as well as into the aryl moieties. Aryl group bromination is accomplished with such reagents as molecular bromine, <i>N</i>-bromosuccinimide, or tetrabutylammonium tribromide. 5-Bromocyclopentenones with very high efficiency can be obtained by the reaction with copper­(II) bromide in methanol, while 4-bromoketones are prepared in <i>n</i>-propyl acetate. The developed methods can be highly useful for the synthesis of bromo-substituted 2-cyclopenten-1-ones and their close analogues, which are important synthons in organic synthesis and for the preparation of a variety of useful substances