K.I. Arshinov1, O.N. Krapivnaya1, V.V. Nevdakh2 1Institute of Technical Acoustics, Academy of Sciences of Belarus, Vitebsk, Belarus, Belarus, 210023, Vitebsk, prosp. Lyudnikova, 13 2Belarusian National Technical University, Belarus, 220013, Minsk, ul. Ya. Kolasa, 13
Keywords: колебательно-неравновесная газовая среда, молекулы СО2 , многочастотная диагностика, населенности колебательных уровней, поступательная температура газа, vibrational nonequilibrium gas media, CO2 molecules, multifrequency probing, level population, gas temperature
Subsection: SPECTROSCOPY OF AMBIENT MEDIUM
The technique for the multifrequency laser diagnostics of a vibrational nonequilibrium gas media containing CO2 molecules with the use of the unsaturated gains at the lines of the 0001-[1000, 0200]I, II and 0002-[1001, 0201]I, II transitions is presented. The influences of accuracy of gain measurements and a number of sensed lines on the accuracy of the level population and temperature determination are studied.
T.Yu. Chesnokova1, A.V. Chentsov1, K.M. Firsov2 1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia 2Volgograd State University, 100, prospect Universitetsky, Volgograd, 400062, Russia
Keywords: атмосферный радиационный перенос, содержание водяного пара, спектроскопические банки данных, atmospheric radiative transfer, water vapor content, spectroscopic databanks
Subsection: SPECTROSCOPY OF AMBIENT MEDIUM
The results of modeling of atmospheric absorption spectra of solar radiation in spectral intervals, where measurement of H2O content can be carried out, are presented. A comparison with the measured atmospheric solar spectra is made. Water vapor total content in vertical atmospheric column is retrieved from the measured atmospheric spectra with the use of different spectroscopic databanks of H2O absorption lines for various meteorological conditions and solar zenith angles.
SH. N. ZHURAKULOV, M. G. LEVKOVICH and V. I. VINOGRADOVA
Yunusov Institute of Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Ul. Mirzo Ulugbek 77, Tashkent 100170 (Uzbekistan)
Keywords: дигидрокверцетин, 6, 7-диметокситетрагидроизохинолин, сальсолидин, формалин, Salsola richteri, реакция Манниха, dihydroquercetin, 6, 7-dimethoxytetrahydroisoquinoline, salsolidine, formalin, Salsola richteri, Mannich reaction
6,7-Dimethoxy-1,2,3,4-tetrahydroisoquinoline was synthesized according to Pictet-Spengler reaction from homoveratrylamine and formaldehyde. Alkaloid salsolidine was extracted from the plant species
Salsola richteri Karel. Heterocyclic monosubstituted conjugates of dihydroquercetin (DHQ) were synthesized through the interaction of DHQ with 6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline and salcolidine according to Mannich reaction. Electrophilic substitution proceeds only at the 6th position of DHQ; the formation of other products was not observed. The synthesis of derivatives was carried out in isopropanol at a temperature within 20-25 °C and the ratio of DHQ/isoquinoline/formalin = 1 : 1 : 1.
M. P. SARTAKOV, N. V. SHPYNOVA, YU. M. DERYABINA and I. D. KOMISSAROV
Yugra State University, Ul. Chekhova 16, Khanty-Mansiysk AD - Yugra, Khanty-Mansiysk 628012 (Russia)
Keywords: гуминовые кислоты сапропелей, элементный состав, сапропели, гумификация, Западная Сибирь, Среднее Приобье, humic acids of sapropel, elemental composition, humification, West Siberia, Middle Ob Region
The elemental composition of humic acids (HA) of sapropel from the lakes of the Middle Ob Region and the south of the Ob-Irtysh basin, formed under various hydrothermal and ecological conditions, was studied for the first time. Specific features of the elemental composition (element content, atomic ratios, oxidation degree) were revealed, pointing to the relations between aromatic and aliphatic parts and to the conditions under which humification proceeds. Nitrogen content of HA in sapropel from the Novosibirsk Region is almost twice higher than that in HA in sapropel from Khanty-Mansiysk AD. It was established that the H/C ratio varies within the range 0.83-1.19 for HA of sapropel from the sothern part of West Siberia, while for HA of the Middle Ob territory this ratio varies from 0.87 to 1.24. This is an evidence of lower benzenoid degree and “maturity” of macromolecules in the taiga region. With respect to oxidation degree , HA of sapropel have reduced form and the negative value, except for HA of sapropel from some lakes in the Middle Ob Region, for which oxidized forms and positive values were established. The results of the work may be used for large-scale evaluation of sapropel deposits; they may also serve as information source for making humic preparations. The studies are necessary for the development of technologies for the production of new kinds of products for agriculture, medicine and engineering.
E. I. PONOMAREVA1, E. I. MOLOKHOVA1 and A. K. KHOKHLOV2 1Perm State Pharmaceutical Academy, Ul. Krupskoy 46, Perm 617070 (Russia) 2Nutrition Institute, Ministry of Power Engineering and Industry, Republic of Tadzhikistan, Ul. Tursun-Zade 25, Dushanbe 734025 (Tadzhikistan)
Keywords: эфирное масло герани душистой, эфирное масло, ТСХ, essential oil of Pelargonium graveolens L’Her, essential oil, TLC
A procedure based on thin layer chromatography (TLC) was proposed for the determination of the components of essential oil of
Pelargonium graveolens L’Her manufactured in Tadzhikistan. Citronellol, geraniol, linalool, phenyl ethyl alcohol were chosen as the standard samples of witness substances (SSWS). As a result of the work, the following chromatography conditions were determined: eluting system - benzene/chloroform (1 : 1), detecting reagent - 5 % ethanolic solution of phosphomolybdic acid, volume of sample applied - 5 mL, concentration 0.005 g/ml. It was established that the polarioty of eluent affects the separation of the components of essential oil from Pelargonium graveolens L’Her. The optimal value of system polarity is 3.19. Seven spots are observed in the chromatograms of pelargonium essential oil manufactured in Tadzhikistan; four of these spots were identified on the basis of R f value and the positions of SSWS spots. The results showed that the chromatographic profile of essential oil from the plant species under under study differs from the essential oil of another manufacturer, essential oil with similar composition (citronellla oil and lemongrass oil) and widespread readily available oil (lavender and sage). Chromatographic profiles differ by the presence of additional spots with different number, size and position. The data obtained provide evidence of the possibility to use TLC as a rapid method to identify essential oil of pelargonium manufactured in Tadzhikistan.
V. A. RYBIN and N. I. BAKLANOVA
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Ul. Kutateladze 18, Novosibirsk 630128 (Russia)
Keywords: базальтовое волокно, покрытия, диоксид циркония, диоксид титана, щелочная устойчивость, фибробетон, bazalt fibres, coatings, zirconium dioxide, titanium dioxide, stability to alkalis, fibroconcrete
It was demonstrated that preliminary surface modification of basalt fibres through the deposition of oxide coatings enhances the stability of fibres in the alkaline medium opf concrete matrix. It was established that unprotected fibres exhibits the highest corrosion degree in the concrete matrix in comparison with the fibres coated with titanium dioxide or zirconium dioxide. A positive effect of increased stability of fibres to alkalis as a result of deposition of protective coatings ios accompanied by insignificant decrease in compression strength of fibroconcrete; the compression strength decreases in the sequence: uncoated fibres - fibres coated with titanium dioxide - fibres coated with zirconium dioxide. Varying the chemical nature of protective coatings, one may affect the degree of adhesion between fibres and the concrete matrmix and, as a consequence, the mechanical properties of fibroconcrete.
O. M. ROZENTAL
Institute of Water Problems, Russian Academy of Sciences, Ul. Gubkina 3, Moscow 119333 (Russia)
Keywords: абсолютное доверие, приемлемый риск, априорная информация, контролируемый показатель качества, выборочная совокупность, доверительный интервал, absolute confidence, acceptable risk, a priori information, controllable quality parameter, sampled population, confidence interval
The concept of acceplable risk of the violation of statistical interval boundaries is proposed instead of the existing approach to the evaluation of composition and properties of substances and materials on the basis of the concept of absolute confidence to measurement results. For water quality control as example, it is demonstrated that though the novel approach, similarly to the existing one, does not provide complete faultlessness of conclusions concerning controllable parameters on the basis of the results of sampling tests, it ensures the target level of reliability (risk) of estimations, necessary for making correct scientific and managemend decisions. It is also demonstrated that decreased risk of erroneous acceptance of the correspondence of controllable parameters to established requirements in the case of actual discrepancy may be provided by the substitution of nonrigorous method of restriction by the rigorous one.
S. S. PALITSYNA and E. G. KHAIKINA
Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, Ul. Sakhyanovoy 8, Ulan Ude 670047 (Russia)
From 29 June to 5 July 2015, the Republic of Buryatia (Ulan-Ude - the lake. Lake Baikal, p. Gremyachinsk with. Goryachinsk) held a regular All-Russian scientific conference with international participation "II MATERIAL Baikal forum". The forum featured presentations, an exhibition of documents and photographs, as well as showing films dedicated to the memory of large domestic materials scientists, Corresponding Member. USSR MV Mohosoeva (1932-1990 gg.) And Academician FA Kuznetsov (1932-2014 gg.).
In recent decades, the Russian Federation has developed a stable situation in which sales of imported biological products for medical, veterinary and agriculture account for 70-80% in terms of money and domestic - 60-70% in physical terms.
