2,394 research outputs found

    Pharmaceutical Cocrystals

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    AbstractCocrystals are very interesting and useful product. In this paper the main information about cocrystals is presented. It is shown that cocrystals are solid substances, which consist of few components mixed together. There are a lot of ways of cocrystals production and application. It is shown that cocrystals can be applied in medicine and pharmaceutical industry for improving different properties such as dissolution rate, melting point, solubility, chemical stability etc. Another way of cocrystals application is drug pharmacological action modification

    Disinfection of water in swimming pools by combined action of UV-light and ozone

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    Disinfection of water in swimming pools by combined action of UV-light and ozone / 258st American Chemical Society National Meeting and Exposition Β«Division of Environmental ChemistryΒ», august 25-29, 2019, San Diego, CA. ENVR 394.P.5

    Анализ Ρ€Π΅ΠΊΡ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ раздСлСния смСси H2O–D2O Π½Π° Π»Π΅Π³ΠΊΡƒΡŽ ΠΈ Ρ‚ΡΠΆΠ΅Π»ΡƒΡŽ Π²ΠΎΠ΄Ρƒ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ матСматичСского модСлирования

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    Objectives. To apply an analytical method for the calculation of a distillation column for the production of D2O at a two-column Kuhn installation operating under vacuum: to simulate the Kuhn installation in the Hysys software; and to compare experimental and calculated data.Methods. Analytical method for the calculation of distillation columns β€œfrom stage to stage,” from the lower theoretical separation stage (TSS) to the upper stage. This method is based on phase equilibrium at the TSS with known data of input flows and component concentrations in the column bottoms. Hysys was used as modeling software.Results. Comparison of the calculation results with Kuhn’s experimental data testified to the high calculation accuracy of the vapor–liquid phase equilibrium for the H2O–D2O mixture at the TSS. The convergence of the D2O material balance for the entire installation was 0.005%. The identification parameter was the number of the column feed plate. Simulation of the Kuhn installation in the Hysys software showed a qualitative agreement of D2O concentrations in material flows. The UNIQUAC (UNIversal QUAsiChemical) model was used to calculate activity coefficients. The found values of the number of theoretical separation stages (NTSS) in both columns, were 88 and 153 taking into account the reboiler and condenser. This is less than the experimental 295 and 400, respectively. The discrepancy can be explained by the increased phase equilibrium H2O constant in the UNIQUAC model. However, the convergence of the material balance in terms of D2O was high and amounted to 1.38Β·10βˆ’6 %. The absolute error of the found concentrations in material flows did not exceed 0.12 mol %.Conclusions. The results obtained indicated the possible use of the Hysys modeling software when searching for and optimizing the operating mode of the block diagram of a cascade of distillation columns with direct and recycle flows to separate a mixture of water into light and heavy water. The final results obtained with regard to the operating mode, inlet and outlet material flows (flow rate, composition, temperature, and pressure drop across the column) are recommended for use in the analytical program for the calculation of the distillation column to refine the NTSS and distribution profile of the concentrations of the H2O and D2O components along the height of the column.Π¦Π΅Π»ΠΈ. ΠŸΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ аналитичСского ΠΌΠ΅Ρ‚ΠΎΠ΄Π° расчСта Ρ€Π΅ΠΊΡ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ ΠΊΠΎΠ»ΠΎΠ½Π½Ρ‹ для получСния D2O Π² Π΄Π²ΡƒΡ…ΠΊΠΎΠ»ΠΎΠ½Π½ΠΎΠΉ установкС ΠšΡƒΠ½Π°, Ρ€Π°Π±ΠΎΡ‚Π°ΡŽΡ‰Π΅ΠΉ ΠΏΠΎΠ΄ Π²Π°ΠΊΡƒΡƒΠΌΠΎΠΌ. ΠœΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ установки ΠšΡƒΠ½Π° Π² ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠ½ΠΎΠΉ срСдС Hysys. Π‘Ρ€Π°Π²Π½Π΅Π½ΠΈΠ΅ ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½Ρ‹Ρ… ΠΈ расчСтных Π΄Π°Π½Π½Ρ‹Ρ….ΠœΠ΅Ρ‚ΠΎΠ΄Ρ‹. АналитичСский ΠΌΠ΅Ρ‚ΠΎΠ΄ расчСта Ρ€Π΅ΠΊΡ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ ΠΊΠΎΠ»ΠΎΠ½Π½Ρ‹ Β«ΠΎΡ‚ ступСни ΠΊ ступСни» ΠΎΡ‚ Π½ΠΈΠΆΠ½Π΅ΠΉ тСорСтичСской ступСни раздСлСния (Π’Π‘Π ) ΠΊ Π²Π΅Ρ€Ρ…Π½Π΅ΠΉ, основанный Π½Π° Ρ„Π°Π·ΠΎΠ²ΠΎΠΌ равновСсии Π½Π° Π’Π‘Π  ΠΏΡ€ΠΈ извСстных исходных Π΄Π°Π½Π½Ρ‹Ρ… Π²Ρ…ΠΎΠ΄Π½Ρ‹Ρ… ΠΏΠΎΡ‚ΠΎΠΊΠΎΠ² ΠΈ ΠΊΠΎΠ½Ρ†Π΅Π½Ρ‚Ρ€Π°Ρ†ΠΈΠΉ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚ΠΎΠ² Π² ΠΊΡƒΠ±Π΅ ΠΊΠΎΠ»ΠΎΠ½Π½Ρ‹. Π‘Ρ€Π΅Π΄Π° модСлирования Hysys.Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. Π‘Ρ€Π°Π²Π½Π΅Π½ΠΈΠ΅ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² расчСта с ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½Ρ‹ΠΌΠΈ Π΄Π°Π½Π½Ρ‹ΠΌΠΈ ΠšΡƒΠ½Π° ΡΠ²ΠΈΠ΄Π΅Ρ‚Π΅Π»ΡŒΡΡ‚Π²ΠΎΠ²Π°Π»ΠΎ ΠΎ высокой точности расчСта равновСсия Ρ„Π°Π· ΠΏΠ°Ρ€ – ΠΆΠΈΠ΄ΠΊΠΎΡΡ‚ΡŒ для смСси H2O–D2O Π½Π° Π’Π‘Π . Π‘Ρ…ΠΎΠ΄ΠΈΠΌΠΎΡΡ‚ΡŒ ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ баланса ΠΏΠΎ D2O ΠΏΠΎ установкС Π² Ρ†Π΅Π»ΠΎΠΌ составила 0.005%. ΠŸΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠΌ ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΈ являлся Π½ΠΎΠΌΠ΅Ρ€ Ρ‚Π°Ρ€Π΅Π»ΠΊΠΈ питания ΠΊΠΎΠ»ΠΎΠ½Π½Ρ‹. ΠœΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ установки ΠšΡƒΠ½Π° Π² срСдС Hysys ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΎ качСствСнноС согласованиС ΠΊΠΎΠ½Ρ†Π΅Π½Ρ‚Ρ€Π°Ρ†ΠΈΠΉ D2O Π² ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΏΠΎΡ‚ΠΎΠΊΠ°Ρ…. Для расчСта коэффициСнтов активности использована модСль UNIversal QUAsiChemical (UNIQUAC). НайдСнныС значСния числа тСорСтичСских ступСнСй раздСлСния (Π§Π’Π‘Π ) Π² ΠΎΠ±Π΅ΠΈΡ… ΠΊΠΎΠ»ΠΎΠ½Π½Π°Ρ… с ΡƒΡ‡Π΅Ρ‚ΠΎΠΌ Ρ€Π΅Π±ΠΎΠΉΠ»Π΅Ρ€Π° ΠΈ кондСнсатора ΡΠΎΡΡ‚Π°Π²Π»ΡΡŽΡ‚ 88 ΠΈ 153, Ρ‡Ρ‚ΠΎ мСньшС ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½Ρ‹Ρ… 295 ΠΈ 400 соотвСтствСнно. РасхоТдСниС ΠΎΠ±ΡŠΡΡΠ½ΡΠ΅Ρ‚ΡΡ ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½Π½Ρ‹ΠΌ Π·Π½Π°Ρ‡Π΅Π½ΠΈΠ΅ΠΌ константы Ρ„Π°Π·ΠΎΠ²ΠΎΠ³ΠΎ равновСсия H2O ΠΌΠΎΠ΄Π΅Π»ΠΈ UNIQUAC, ΠΎΠ΄Π½Π°ΠΊΠΎ ΡΡ…ΠΎΠ΄ΠΈΠΌΠΎΡΡ‚ΡŒ ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ баланса ΠΏΠΎ D2O высокая ΠΈ составляСт 1.38Β·10βˆ’6 %. ΠΠ±ΡΠΎΠ»ΡŽΡ‚Π½Π°Ρ ΠΏΠΎΠ³Ρ€Π΅ΡˆΠ½ΠΎΡΡ‚ΡŒ Π½Π°ΠΉΠ΄Π΅Π½Π½Ρ‹Ρ… Π·Π½Π°Ρ‡Π΅Π½ΠΈΠΉ ΠΊΠΎΠ½Ρ†Π΅Π½Ρ‚Ρ€Π°Ρ†ΠΈΠΉ Π² ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΏΠΎΡ‚ΠΎΠΊΠ°Ρ… Π½Π΅ ΠΏΡ€Π΅Π²Ρ‹ΡˆΠ°Π΅Ρ‚ 0.12 ΠΌΠΎΠ». %.Π’Ρ‹Π²ΠΎΠ΄Ρ‹. ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ ΡΠ²ΠΈΠ΄Π΅Ρ‚Π΅Π»ΡŒΡΡ‚Π²ΡƒΡŽΡ‚ ΠΎ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΠΌ ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠΈ срСды модСлирования Hysys для поиска ΠΈ ΠΎΠΏΡ‚ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΠΈ Ρ€Π΅ΠΆΠΈΠΌΠ° Ρ€Π°Π±ΠΎΡ‚Ρ‹ структурной схСмы каскада Ρ€Π΅ΠΊΡ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΎΠ½Π½Ρ‹Ρ… ΠΊΠΎΠ»ΠΎΠ½Π½ с прямыми ΠΈ Ρ€Π΅Ρ†ΠΈΠΊΠ»ΠΎΠ²Ρ‹ΠΌΠΈ ΠΏΠΎΡ‚ΠΎΠΊΠ°ΠΌΠΈ для раздСлСния смСси Π²ΠΎΠ΄Ρ‹ Π½Π° Π»Π΅Π³ΠΊΡƒΡŽ ΠΈ Ρ‚ΡΠΆΠ΅Π»ΡƒΡŽ Π²ΠΎΠ΄Ρƒ. ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ ΠΊΠΎΠ½Π΅Ρ‡Π½Ρ‹Π΅ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ ΠΏΠΎ Ρ€Π΅ΠΆΠΈΠΌΡƒ Ρ€Π°Π±ΠΎΡ‚Ρ‹, Π²Ρ…ΠΎΠ΄Π½Ρ‹ΠΌ ΠΈ Π²Ρ‹Ρ…ΠΎΠ΄Π½Ρ‹ΠΌ ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½Ρ‹ΠΌ ΠΏΠΎΡ‚ΠΎΠΊΠ°ΠΌ (расход, состав, Ρ‚Π΅ΠΌΠΏΠ΅Ρ€Π°Ρ‚ΡƒΡ€Π°, ΠΏΠ΅Ρ€Π΅ΠΏΠ°Π΄ Π΄Π°Π²Π»Π΅Π½ΠΈΠΉ ΠΏΠΎ ΠΊΠΎΠ»ΠΎΠ½Π½Π΅) Ρ€Π΅ΠΊΠΎΠΌΠ΅Π½Π΄ΠΎΠ²Π°Π½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ Π² аналитичСской ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠ΅ расчСта Ρ€Π΅ΠΊΡ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ ΠΊΠΎΠ»ΠΎΠ½Π½Ρ‹ для уточнСния Π§Π’Π‘Π  ΠΈ профиля распрСдСлСния ΠΊΠΎΠ½Ρ†Π΅Π½Ρ‚Ρ€Π°Ρ†ΠΈΠΉ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚ΠΎΠ² H2O ΠΈ D2O ΠΏΠΎ высотС ΠΊΠΎΠ»ΠΎΠ½Π½Ρ‹

    Hybrid tracking detector based on semiconductor and gas technologies

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    New Silicon-Gas Pixel Detector (SiGPD) is the result of the further development already proposed Gas-Pixel Detector (GPD). The only disadvantage of GPD was the uncertainty of the particle arriving time. The problem can be solved by additional silicon pixels implementation inside existed electronic chip epitaxial layer during regular chip production. The cost of new Si-Gas Pixel Detector remains practically the same. The new detectors have self-triggering properties and can be used for a first level trigger generation in the particle physics experiments and for many other applications

    Stimulating of entrepreneurs’ innovative activity in the Republic of Bashkortostan

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    The article views some aspects of promoting innovative activity in the Republic of Bashkortostan. The measures stimulating innovative activity have been grouped into blocks.1. Creating favorable conditions for innovative activity. 2. Increasing the population’s innovative activity. 3. Development of the system of scientific and production cooperation and innovation commercialization. 4. Investment support of innovative projects. 5. Development of innovative infrastructure. 6. Development of innovative small businesses. 7. Information provision of innovative activity. The main directions of implementing the above-mentioned conditions are: - lawmaking activity in the Republic, taking into consideration the federal legislation, international standards and traditions; - financial and tax inducement of scientific-technical and innovative activity; - international technological integration; - private-state partnership in the sphere of innovative activity. Recommendations are suggested, relating to the innovative policy activation for more efficient fulfillment of the key functions of the Republic’s scientific and research sector. The authors conclude that the Republic has all necessary preconditions for small entrepreneurship functioning: the natural conditions favorable for many kinds of economic activity, the forming local market infrastructure for small business servicing, and the availability of large enterprises and centers of economic activity.Keywords: entrepreneur, entrepreneurship, innovation, innovative activity, region, infrastructure, investments, stimulation, monitoring

    ΠžΠŸΠ Π•Π”Π•Π›Π•ΠΠ˜Π• Π₯ИНИНА Π’ Π‘Π•Π—ΠΠ›ΠšΠžΠ“ΠžΠ›Π¬ΠΠ«Π₯ НАПИВКАΠ₯ ΠœΠ•Π’ΠžΠ”ΠžΠœ Π€Π›Π£ΠžΠ Π˜ΠœΠ•Π’Π Π˜Π˜

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    The fluorimetric method of analysis has been proposed for the qualitative and quantitative determination of the food flavoring additive quinine in the tonic water. The fluorimetric method of analysis has high sensitivity, selectivity and express speed compared to the other methods. The optimal conditions for the quinine fluorimetric determination in the soft drinks were found: solvent - 0.01 M sulfuric acid, excitation wavelength of 353 nm, luminescence wavelength of 452 nm, strobe parameters - signal delay of 0.85 ΞΌs, signal duration of 21.25 ΞΌs. To increase the sensitivity of the developed method, quinine luminescence was studied in the various concentrations of sulfuric acid from 0.005 to 1.000 M, and the quantum yield of quinine luminescence in all the investigated concentrations of sulfuric acid was calculated. It has been established that the highest quinine luminescence intensity, the highest quantum yield, and the lowest solvent background signal were observed in 0.01 M H2SO4. The influence of the related compounds of the food matrix on the fluorimetric determination of quinine was studied. It has been established that the content of such components as sugar and citric acid in the soft drinks does not affect the luminescent signal of quinine. The detection limit of quinine was calculated, which amounted to 0.0019 mg/dm3. In order to verify the correctness of the fluorimetric method, the results were compared with the spectrophotometric method (maximum absorption of quinine at 347 nm). The results obtained by the two methods were in good agreement, and the detection limit of the fluorimetric method was higher compared to the known works. The proposed technique could be used to control the quality and safety of the soft drinks.Β Keywords: quinine, fluorimetry, tonic water, luminescence quantum yield, strobe parameters.DOI: http://dx.doi.org/10.15826/analitika.2019.23.3.007(Russian)A.А. Nikolaeva, A.A. Ivanov, E.I. KorotkovaΒ National Research Tomsk Polytechnic University,Lenina prosp., 30 Tomsk, 634050, Russian FederationЀлуоримСтричСский ΠΌΠ΅Ρ‚ΠΎΠ΄ ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½ для качСствСнного ΠΈ количСствСнного опрСдСлСния ΠΏΠΈΡ‰Π΅Π²ΠΎΠΉ вкусоароматичСской Π΄ΠΎΠ±Π°Π²ΠΊΠΈ Ρ…ΠΈΠ½ΠΈΠ½Π° Π² Π½Π°ΠΏΠΈΡ‚ΠΊΠ°Ρ…-Ρ‚ΠΎΠ½ΠΈΠΊΠ°Ρ…. Π’Ρ‹Π±ΠΎΡ€ Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΠΌΠ΅Ρ‚ΠΎΠ΄Π° обусловлСн Π΅Π³ΠΎ высокой Ρ‡ΡƒΠ²ΡΡ‚Π²ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΡŒΡŽ, ΡΠ΅Π»Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒΡŽ ΠΈ ΡΠΊΡΠΏΡ€Π΅ΡΡΠ½ΠΎΡΡ‚ΡŒΡŽ ΠΏΠΎ ΡΡ€Π°Π²Π½Π΅Π½ΠΈΡŽ с Π΄Ρ€ΡƒΠ³ΠΈΠΌΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Π°ΠΌΠΈ. НайдСны ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½Ρ‹Π΅ условия флуоримСтричСского опрСдСлСния Ρ…ΠΈΠ½ΠΈΠ½Π° Π² Π½Π°ΠΏΠΈΡ‚ΠΊΠ°Ρ…: Ρ€Π°ΡΡ‚Π²ΠΎΡ€ΠΈΡ‚Π΅Π»ΡŒ – 0.01 М сСрная кислота, Π΄Π»ΠΈΠ½Π° Π²ΠΎΠ»Π½Ρ‹ возбуТдСния 353 Π½ΠΌ, Π΄Π»ΠΈΠ½Π° Π²ΠΎΠ»Π½Ρ‹ Π»ΡŽΠΌΠΈΠ½Π΅ΡΡ†Π΅Π½Ρ†ΠΈΠΈ 452 Π½ΠΌ, ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Ρ‹ строба – Π·Π°Π΄Π΅Ρ€ΠΆΠΊΠ° сигнала 0.85 мкс, Π΄Π»ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ сигнала 21.25 мкс. Для увСличСния Ρ‡ΡƒΠ²ΡΡ‚Π²ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΠΈ Ρ€Π°Π·Ρ€Π°Π±Π°Ρ‚Ρ‹Π²Π°Π΅ΠΌΠΎΠΉ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠΈ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Ρ‹ исслСдования Π»ΡŽΠΌΠΈΠ½Π΅ΡΡ†Π΅Π½Ρ†ΠΈΠΈ Ρ…ΠΈΠ½ΠΈΠ½Π° ΠΈ ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Ρ‹ ΠΊΠ²Π°Π½Ρ‚ΠΎΠ²Ρ‹Π΅ Π²Ρ‹Ρ…ΠΎΠ΄Ρ‹ Π»ΡŽΠΌΠΈΠ½Π΅ΡΡ†Π΅Π½Ρ†ΠΈΠΈ Ρ…ΠΈΠ½ΠΈΠ½Π° Π² Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… концСнтрациях сСрной кислоты ΠΎΡ‚ 0.005 Π΄ΠΎ 1.000 М. УстановлСно, Ρ‡Ρ‚ΠΎ наибольшая ΠΈΠ½Ρ‚Π΅Π½ΡΠΈΠ²Π½ΠΎΡΡ‚ΡŒ Π»ΡŽΠΌΠΈΠ½Π΅ΡΡ†Π΅Π½Ρ†ΠΈΠΈ Ρ…ΠΈΠ½ΠΈΠ½Π°, наибольший ΠΊΠ²Π°Π½Ρ‚ΠΎΠ²Ρ‹ΠΉ Π²Ρ‹Ρ…ΠΎΠ΄ ΠΈ наимСньший сигнал Ρ„ΠΎΠ½Π° растворитСля Π½Π°Π±Π»ΡŽΠ΄Π°Π΅Ρ‚ΡΡ Π² 0.01 М H2SO4. ИсслСдовано влияниС ΠΌΠ΅ΡˆΠ°ΡŽΡ‰ΠΈΡ… ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚ΠΎΠ² ΠΏΠΈΡ‰Π΅Π²ΠΎΠΉ ΠΌΠ°Ρ‚Ρ€ΠΈΡ†Ρ‹ Π½Π° флуоримСтричСскоС ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ Ρ…ΠΈΠ½ΠΈΠ½Π°. УстановлСно, Ρ‡Ρ‚ΠΎ сахар ΠΈ лимонная кислота Π½Π΅ Π²Π»ΠΈΡΡŽΡ‚ Π½Π° Π»ΡŽΠΌΠΈΠ½Π΅ΡΡ†Π΅Π½Ρ‚Π½Ρ‹ΠΉ сигнал Ρ…ΠΈΠ½ΠΈΠ½Π°. Рассчитан ΠΏΡ€Π΅Π΄Π΅Π» обнаруТСния Ρ…ΠΈΠ½ΠΈΠ½Π°, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ составил 0.0019 ΠΌΠ³/Π΄ΠΌ3. Для ΠΏΡ€ΠΎΠ²Π΅Ρ€ΠΊΠΈ ΠΏΡ€Π°Π²ΠΈΠ»ΡŒΠ½ΠΎΡΡ‚ΠΈ флуоримСтричСской ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠΈ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ΠΎ сравнСниС Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² со спСктрофотомСтричСской ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠΎΠΉ опрСдСлСния Ρ…ΠΈΠ½ΠΈΠ½Π° Π² Π½Π°ΠΏΠΈΡ‚ΠΊΠ°Ρ… (максимальноС ΠΏΠΎΠ³Π»ΠΎΡ‰Π΅Π½ΠΈΠ΅ Ρ…ΠΈΠ½ΠΈΠ½Π° ΠΏΡ€ΠΈ 347 Π½ΠΌ).Β  Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ двумя ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠ°ΠΌΠΈ, Ρ…ΠΎΡ€ΠΎΡˆΠΎ ΡΠΎΠ³Π»Π°ΡΡƒΡŽΡ‚ΡΡ, ΠΏΡ€ΠΈ этом ΠΏΡ€Π΅Π΄Π΅Π» обнаруТСния флуоримСтричСского ΠΌΠ΅Ρ‚ΠΎΠ΄Π° Π½ΠΈΠΆΠ΅ ΠΏΠΎ ΡΡ€Π°Π²Π½Π΅Π½ΠΈΡŽ с извСстными ΠΌΠ΅Ρ‚ΠΎΠ΄Π°ΠΌΠΈ. ΠŸΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π½Π°Ρ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠ° ΠΌΠΎΠΆΠ΅Ρ‚ Π±Ρ‹Ρ‚ΡŒ использована для контроля качСства ΠΈ бСзопасности Π±Π΅Π·Π°Π»ΠΊΠΎΠ³ΠΎΠ»ΡŒΠ½Ρ‹Ρ… Π½Π°ΠΏΠΈΡ‚ΠΊΠΎΠ².ΠšΠ»ΡŽΡ‡Π΅Π²Ρ‹Π΅ слова: Ρ…ΠΈΠ½ΠΈΠ½, флуоримСтрия, Π½Π°ΠΏΠΈΡ‚ΠΊΠΈ-Ρ‚ΠΎΠ½ΠΈΠΊΠΈ, ΠΊΠ²Π°Π½Ρ‚ΠΎΠ²Ρ‹ΠΉ Π²Ρ‹Ρ…ΠΎΠ΄ Π»ΡŽΠΌΠΈΠ½Π΅ΡΡ†Π΅Π½Ρ†ΠΈΠΈ, ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Ρ‹ стробаDOI: http://dx.doi.org/10.15826/analitika.2019.23.3.00

    Π€Π˜Π—Π˜ΠšΠž-Π₯Π˜ΠœΠ˜Π§Π•Π‘ΠšΠ˜Π• Π—ΠΠšΠžΠΠžΠœΠ•Π ΠΠžΠ‘Π’Π˜ ΠŸΠ ΠžΠ¦Π•Π‘Π‘Π Π­Π›Π•ΠšΠ’Π ΠžΠ’ΠžΠ‘Π‘Π’ΠΠΠžΠ’Π›Π•ΠΠ˜Π― ΠšΠ˜Π‘Π›ΠžΠ ΠžΠ”Π Π’ ΠŸΠ Π˜Π‘Π£Π’Π‘Π’Π’Π˜Π˜ ΠŸΠ Π˜Π ΠžΠ”ΠΠ«Π₯ ΠΠΠ’Π˜ΠžΠšΠ‘Π˜Π”ΠΠΠ’ΠžΠ’

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    The effect of individual antioxidants on physico-chemical parameters of ORR was studied under conditions of liner semi-infinite diffusion. Rate constants for coupled homogeneous reduction of active oxygen by the range to flavonoids were calculated under the optimal linear sweep rate.Possibility of determination of the parameters of reduction of active oxygen process (chemical and electrochemical rate constant, reversibility of process) in addition of individual antioxidants was showed by the computer simulation. Identification of substances with antioxidant properties was illustrated by changing of reduction current of active oxygen.Keywords: oxygen reduction reaction, ORR, antioxidant, flavonoids, rate constant, voltammetry(Russian)DOI:Β http://dx.doi.org/10.15826/analitika.2013.17.4.007A.N. Vtorushina, E.I. Korotkova, S.G. Kataev*Β Tomsk Polytechnic University, Tomsk, Russian Federation*Tomsk State Pedagogical University, Tomsk, Russian FederationРассмотрСны Ρ„ΠΈΠ·ΠΈΠΊΠΎ-химичСскиС закономСрности процСсса элСктровосстановлСния кислорода (Π­Π’Β Πž2) Π² присутствии ΠΈΠ½Π΄ΠΈΠ²ΠΈΠ΄ΡƒΠ°Π»ΡŒΠ½Ρ‹Ρ… антиоксидантов Π² условиях Π»ΠΈΠ½Π΅ΠΉΠ½ΠΎΠΉ полубСсконСчной Π΄ΠΈΡ„Ρ„ΡƒΠ·ΠΈΠΈ, ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Ρ‹ константы скорости взаимодСйствия антиоксидантов с Π°ΠΊΡ‚ΠΈΠ²Π½Ρ‹ΠΌΠΈ Ρ„ΠΎΡ€ΠΌΠ°ΠΌΠΈ кислорода ΠΈ Π½Π΅ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ Π΄Ρ€ΡƒΠ³ΠΈΠ΅ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Ρ‹ процСсса для ряда Ρ„Π»Π°Π²ΠΎΠ½ΠΎΠΈΠ΄ΠΎΠ² ΠΏΡ€ΠΈ ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠΉ скорости Ρ€Π°Π·Π²Π΅Ρ€Ρ‚ΠΊΠΈ ΠΏΠΎΡ‚Π΅Π½Ρ†ΠΈΠ°Π»Π°. Показана Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ опрСдСлСния Π½Π΅ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² процСсса Π­Π’Β Πž2 (констант скорости химичСской ΠΈ элСктрохимичСской Ρ€Π΅Π°ΠΊΡ†ΠΈΠΈ, обратимости процСсса) Π² присутствии ΠΈΠ½Π΄ΠΈΠ²ΠΈΠ΄ΡƒΠ°Π»ΡŒΠ½Ρ‹Ρ… антиоксидантов с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² ΠΊΠΎΠΌΠΏΡŒΡŽΡ‚Π΅Ρ€Π½ΠΎΠ³ΠΎ модСлирования, Π° Ρ‚Π°ΠΊΠΆΠ΅ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΈ вСщСств, ΠΎΠ±Π»Π°Π΄Π°ΡŽΡ‰ΠΈΡ… антиоксидантными свойствами, ΠΏΠΎ измСнСнию Ρ‚ΠΎΠΊΠ° Π­Π’Β Πž2 Π² присутствии исслСдуСмых ΠΎΠ±Ρ€Π°Π·Ρ†ΠΎΠ².ΠšΠ»ΡŽΡ‡Π΅Π²Ρ‹Π΅ слова: элСктровосстановлСниС кислорода, антиоксиданты, Π²ΠΎΠ»ΡŒΡ‚Π°ΠΌΠΏΠ΅Ρ€ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΡDOI:Β http://dx.doi.org/10.15826/analitika.2013.17.4.00

    Modern Aspects of the Surgical Treatment of Children with Idiopathic Thrombocytopenic Purpura

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    The main link in the pathogenesis of ITP is an excessive elimination of platelets in venous sinuses of the spleen. It justifies the splenectomy in this pathology, which increases the immunosuppression, which is caused by earlier courses prednizolonotherapy. A violation of proteinsynthetical detoxifying and liver function plays an essential link in the pathogenesis of postsplenectomic syndrome. It exacerbates immunosuppression. The composition allows saving all the structural elements of viable lymphoid tissue in the spleen for 7 days. Delayed autotransplantation of preserved splenic tissue gives the body a full lymphoid tissue without signs of hyperplasia. Two-moment autotransplantation of preserved splenic tissue in ITP allows to cut short the phenomenon postsplenectomic immunosuppression with normalization of platelet counts in peripheral blood and to avoid disability. The developed medical complex, including splenectomy with followed by a delayed autotransplantation of splenic tissue is technically simple, requires nonexpensive equipment and can be applied in practical public health services in the treatment of children’s IT
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