85 research outputs found
Research on the improvement of mixed titania and Co(Mn) oxide nano-composite coatings
The structure and the properties of the oxide films formed on titanium in the diphosphate based electrolytes by means of plasma electrolytic oxidizing at direct current density of 2-2.5 AΒ·dmβ»Β² have been studied. Oxide layers of different composition and content of alloying elements were obtained by modification of electrolytes and variation in current density. The interelectrode voltage during PEO, chemical and phase composition, topography and microstructure of the formed layers depend on the electrolyte composition and applied current density. The spark-discharge regime was shown to be reached at inter-electrode voltage 100 to 130 V depending on the composition of electrolyte. The effect of chemical composition and surface morphology formed mixed oxide films on the corrosion resistance and catalytic activity has been discussed
Obstacles to the Revival of Mobile Grazing Systems in Kazakhstan
Livestock mobility was an essential characteristic of Kazakh livestock production systems, allowing animals to take advantage of spatial and temporal variability in climate and vegetation, optimising forage intake over the year. These systems broke down following the end of the Soviet Union. In this paper we examine the extent and determinants of the recovery of mobile livestock husbandry in south-eastern Kazakhstan, using surveys and semi-structured interviews with livestock farmers and rural households (holding livestock but not registered as farms). We find positive relationships between livestock holding size and probability of mobility. Winter pastures are particularly important for large farms, with households and smaller farms more dependent on supplementary fodder. The major formal property right over pasture is the long-term leasehold, allocated by auction and associated with significant transaction costs. Leasehold markets function poorly, so farms use a combination of leasing, subleasing and short-term contracts with local authorities to assemble the pastoral resources they need. Few farmers conduct more than a simplified summer-winter migration, whilst around 30% of farms and 70% of households (which own the bulk of livestock) are entirely sedentary, staying on over-used village pastures all year round. Many of these producers express a desire for improved pasture access. The 2017 Law on Pastures introduced district-level pasture use planning, with promotion of mobility and allocation of remote pastures to those with poor access. But the Law does not include new land tenure mechanisms appropriate for small producers (owning few livestock and without leaseholds) which can be employed to realise this goal. Moreover, most pastures are already leased. We discuss options for grazing system management which may simultaneously increase the economic contribution of pastures, improve their condition and reduce rural inequalities created by disparities in access to resources
Mixed alumina and cobalt containing plasma electrolytic oxide coatings
Principles of plasma electrolytic oxidation of the AL25 aluminum alloy in diphosphate alkali solutions containing cobalt(2+) cations are discussed. It has been established that a variation in the concentration of the electrolyte components provides the formation of mixed-oxide coatings consisting of the basic matrix materials and the cobalt oxides of different content. An increase in the cobalt oxide content in the coating is achieved by the variation in electrolysis current density as well as the treatment time due to both the electrochemical and thermo-chemical reactions at substrate surface and in spark region. Current density intervals that provide micro-globular surface formation and uniform cobalt distribution in the coating are determined. The composition and morphology of the surface causes high catalytic properties of synthesized materials, which confirmed the results of testing in model reaction CO and benzene oxidation as well as fuel combustion for various modes of engine operation
Surface analysis of Fe-Co-Mo electrolytic coatings
Coatings Fe-Co-Mo with a composition of 47 at.% iron, 28 at.% Cobalt and 25 at.% Molybdenum were deposited from citrate electrolyte using pulse electrolysis mode. Scanning electron and atomic force microscopy have established the surface morphology and topography. It was identified the parts with a globular structure which have an average size of 0.2-0.5ΞΌm and singly located sharp grains. Within the same scan area sites with developed surface were detected the topography of which is identical to the crystal structure of cobalt with the crystallites size of 0.2β1.75ΞΌm. The parameters Ra and Rq for parts with different morphology as well as average characteristics of coatings demonstrated the low roughness of the surface. It is found that the coercive force of Fe-Co-Mo films is 7-10 Oe, which allow us to classify the Fe-Co-Mo coatings as soft magnetic materials
Composition and Corrosion Behavior of Iron-Cobalt-Tungsten
Principles of three component Iron-Cobalt-Tungsten alloys electrodeposition from complex Fe (III) based citrate electrolytes are discussed. It is shown, that deposition of ternary alloys proceeds through competitive reduction of cobalt and tungsten with iron. With increasing ligand concentration coatings are enriched with a refractory component; however, increasing current density favors a reverse trend. The effect of both current density and pulse on/off time on the quality, content of alloying metals and surface topography of electrolytic coatings were determined. The application of pulsed electrolysis provides increasing tungsten content up to 13 at.%, at current efficiency of 70β75%. Globular relief of Fe-Co-W coatings is caused by refractory metals incorporation, and crystalline and amorphous parts of structure are visualized by X-ray spectroscopy, including inter-metallic phases Co7W6, Fe7W6 along with Ξ±-Fe and Fe3C. The crystallite size of the amorphous part is near 7β8 nm. Corrosion resistance of the coatings is 1.3β2.0 orders of magnitude higher than the substrate parameters as follows from data of polarization resistance method and electrode impedance spectroscopy
Improvement of specialized medical care of patients with acute coronary syndrome in Tashkent city
The leading cause of death in the world and in the Republic of Uzbekistan is cardiovascular diseases, and
their prevalence is increasing. To reduce morbidity and mortality from acute coronary syndrome, it is
necessary to improve a high-tech specialized approac
ΠΠΈΠ½Π°ΡΠ½ΡΠ΅ ΠΈ ΡΡΠΎΠΉΠ½ΡΠ΅ ΡΠΏΠ»Π°Π²Ρ ΠΆΠ΅Π»Π΅Π·Π° Ρ ΠΌΠΎΠ»ΠΈΠ±Π΄Π΅Π½ΠΎΠΌ ΠΈ Π²ΠΎΠ»ΡΡΡΠ°ΠΌΠΎΠΌ
Electrodeposition of Fe-Mo-W and Fe-Mo layers from a citrate solution containing iron(III) on steel and iron substrates is compared. The utilization of iron(III) compounds significantly improved the electrolyte stability eliminating side anodic redox reactions. The influence of concentration ratios and electrodeposition mode on quality, chemical composition, and functional properties of the alloys is determined. It has been found that alloys deposited in pulse mode have more uniform surface morphology and chemical composition and contain less impurities. Improvement in physical and mechanical properties as well as corrosion resistance of Fe-Mo and Fe-Mo-W deposits when compared with main alloy forming metals is driven by alloying components chemical passivity as well as by alloys amorphous structure. Indicated deposits can be considered promising materials in surface hardening technologies and repair of worn out items.ΠΠΎΠΊΡΡΡΠΈΡ ΡΠΏΠ»Π°Π²Π°ΠΌΠΈ Fe-Mo-W ΠΈ Fe-Mo ΠΏΠΎΠ»ΡΡΠ΅Π½Ρ ΠΈΠ· ΡΠΈΡΡΠ°ΡΠ½ΡΡ
ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠΎΠ² Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΆΠ΅Π»Π΅Π·Π° (III) Π½Π° ΠΏΠΎΠ΄Π»ΠΎΠΆΠΊΠ°Ρ
ΠΈΠ· ΡΡΠ°Π»ΠΈ ΠΈ ΡΡΠ³ΡΠ½Π°. ΠΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠΎΠ»Π΅ΠΉ ΠΆΠ΅Π»Π΅Π·Π°(III) ΡΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎ ΠΏΠΎΠ²ΡΡΠ°Π΅Ρ ΡΡΠ°Π±ΠΈΠ»ΡΠ½ΠΎΡΡΡ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠ° Π·Π° ΡΡΠ΅Ρ ΡΠ»ΠΈΠΌΠΈΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΏΠΎΠ±ΠΎΡΠ½ΡΡ
Π°Π½ΠΎΠ΄Π½ΡΡ
ΡΠ΅Π°ΠΊΡΠΈΠΉ. Π£ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΡΠΎΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΡ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΉ ΠΈ ΡΠ΅ΠΆΠΈΠΌΠΎΠ² ΡΠ»Π΅ΠΊΡΡΠΎΠΎΡΠ°ΠΆΠ΄Π΅Π½ΠΈΡ Π½Π° ΠΊΠ°ΡΠ΅ΡΡΠ²ΠΎ, Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠΉ ΡΠΎΡΡΠ°Π² ΠΈ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΡΠΏΠ»Π°Π²ΠΎΠ². ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ Π² ΠΈΠΌΠΏΡΠ»ΡΡΠ½ΠΎΠΌ ΡΠ΅ΠΆΠΈΠΌΠ΅ ΡΠΏΠ»Π°Π²Ρ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΡΡΡΡ Π±ΠΎΠ»Π΅Π΅ ΡΠ°Π²Π½ΠΎΠΌΠ΅ΡΠ½ΠΎΠΉ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΡΡ, ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ΠΌ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠΎΠ² ΠΈ ΡΠΎΠ΄Π΅ΡΠΆΠ°Ρ ΠΌΠ΅Π½ΡΡΠ΅ ΠΏΡΠΈΠΌΠ΅ΡΠ΅ΠΉ. ΠΠΎΠ²ΡΡΠ΅Π½ΠΈΠ΅ ΡΠΈΠ·ΠΈΠΊΠΎ-ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ² ΠΈ ΠΊΠΎΡΡΠΎΠ·ΠΈΠΎΠ½Π½ΠΎΠΉ ΡΡΠΎΠΉΠΊΠΎΡΡΠΈ ΠΏΠΎΠΊΡΡΡΠΈΠΉ Fe-Mo ΠΈ Fe-Mo-W ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ ΡΠΎ ΡΠΏΠ»Π°Π²ΠΎΠΎΠ±ΡΠ°Π·ΡΡΡΠΈΠΌΠΈ ΠΌΠ΅ΡΠ°Π»Π»Π°ΠΌΠΈ ΠΈ ΠΏΠΎΠ΄Π»ΠΎΠΆΠΊΠΎΠΉ ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½ΠΎ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΈΠ½Π΅ΡΡΠ½ΠΎΡΡΡΡ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠΎΠ² ΠΈ Π°ΠΌΠΎΡΡΠ½ΠΎΠΉ ΡΡΡΡΠΊΡΡΡΠΎΠΉ ΡΠΏΠ»Π°Π²Π°. ΠΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΌΠΎΠΆΠ½ΠΎ ΡΠ°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°ΡΡ ΠΊΠ°ΠΊ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΠ΅ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ Π΄Π»Ρ ΡΠΏΡΠΎΡΠ½Π΅Π½ΠΈΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΈ Π²ΠΎΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΈΡ Π΄Π΅ΡΠ°Π»Π΅ΠΉ
Influence of PST and PHF heating conditions on the swirl flow of Al+Mg+TiO2 ternary hybrid water-ethylene glycol based nanofluid with a rotating cone
Swirl flow heat exchangers are commonly used in industrial processes such as power generation, chemical processing, and refrigeration. They can be used for both heating and cooling applications and can be designed to handle a wide range of fluid flow rates and temperatures. This study investigated the influence of PST (prescribed surface temperature) and PHF (prescribed heat flux) heating conditions on the swirl flow of Al+Mg+TiO2 ternary hybrid water-ethylene glycol (50/50) based nanofluid with a heated rotating cone. The governing ordinary differential equations were derived from the partial differential equations using the proper similarity transformations. The problem was solved using the Shifted Legendre Collocation Method (SLCM), which is a powerful numerical method. The results showed that the PST heating conditions had a significant impact on the flow and heat transfer characteristics of the ternary hybrid nanofluid. Under PHF heating conditions, the swirl velocity distribution was leading to a noteworthy influence. The use of the Al+Mg+TiO2 ternary hybrid water-ethylene glycol based nanofluid resulted in a significant enhancement in the convective heat transfer coefficient. The SLCM method provided accurate and efficient numerical solutions for the problem, demonstrating its suitability for simulating complex fluid flow and heat transfer problems
Prion infection impairs cholesterol metabolism in neuronal cells
Conversion of prion protein (PrPC) into a pathological isoform (PrPSc) during prion infection occurs in lipid rafts and is dependent on cholesterol. Here, we show that prion infection increases the abundance of cholesterol transporter, ATP-binding cassette transporter type A1 (ATP-binding cassette transporter type A1), but reduces cholesterol efflux from neuronal cells leading to the accumulation of cellular cholesterol. Increased abundance of ABCA1 in prion disease was confirmed in prion-infected mice. Mechanistically, conversion of PrPC to the pathological isoform led to PrPSc accumulation in rafts, displacement of ABCA1 from rafts and the cell surface, and enhanced internalization of ABCA1. These effects were abolished with reversal of prion infection or by loading cells with cholesterol. Stimulation of ABCA1 expression with liver X receptor agonist or overexpression of heterologous ABCA1 reduced the conversion of prion protein into the pathological form upon infection. These findings demonstrate a reciprocal connection between prion infection and cellular cholesterol metabolism, which plays an important role in the pathogenesis of prion infection in neuronal cells
Π‘Π ΠΠΠΠΠ’ΠΠΠ¬ΠΠ«Π ΠΠΠΠΠΠ ΠΠΠ’ΠΠΠΠ Π ΠΠΠ’ΠΠΠΠΠ€ΠΠ£ΠΠ ΠΠ‘Π¦ΠΠΠ’ΠΠΠΠ ΠΠΠ ΠΠΠΠΠΠΠΠ― ΠΠΠΠΠΠΠ’ΠΠΠΠ Π‘ΠΠ‘Π’ΠΠΠ ΠΠ Π₯ΠΠΠΠΠΠΠ§ΠΠ‘ΠΠΠ ΠΠΠ ΠΠΠΠΠ ΠΠ ΠΠΠΠ«Π₯ ΠΠΠΠΠ‘ΠΠ
Wavelength-dispersive X-ray fluorescence analysis (WDXRF) and total-reflection X-ray fluorescence (TXRF) analysis were applied to study the elemental composition of the Late Neolithic ancient ceramics collected at the Popovsky Lug burial site (Kachug, Upper Lena river, Russia). Semi-quantitative non-destructive analysis of ceramic pieces showed that measurements of the upper and lower sides of the ceramic are less informative than the measurement of its cut. Various sample preparation techniques for the low quantity of crushed ceramics such as fusion, pressing and preparation of suspensions were compared to preserve the material. Samples were prepared as 150 mg fused beads and 250 mg pressed pellets for WDXRF, and as suspensions of 20 mg sample based on the aqueous solution of the Triton X-100 surfactant for TXRF. Certified methods were used to validate the obtained contents of rock-forming oxides and inductively coupled plasma mass spectrometry was used to confirm the results of trace elements determination. Based on the carried-out studies, a combination of the wavelength-dispersive X-ray fluorescence analysis (glass) and total-reflection X-ray fluorescence analysis (suspension) methods was chosen to obtain the data on the elemental bulk composition of archaeological ceramics. The proposed combination allowed the quantitative determination of Na, Mg, Al, Si, P, K, Ca, Ti, Mn, Fe, V, Cr, Ni, Cu, Zn, Ga, Rb, Sr, Y, Zr, Pb, and Ba from the sample of crushed ceramics weighing only about 170 mg.Keywords: wavelength-dispersive X-ray fluorescence analysis, total reflection X-ray fluorescence analysis, ceramics, archeology, Popovsky Lug, Upper Lena RiverΒ DOI: http://dx.doi.org/10.15826/analitika.2020.25.1.001Β G.V. Pashkova1,2, M.M. Mukhamedova1,2, V.M. Chubarov1,3, A.S. Maltsev1,4,A.A. Amosova3, E.I. Demonterova1, E.A. Mikheeva1, D.L. Shergin1,2,5, V.A. Pellinen1, A.V. Teten'kin1,4Β 1Institute of the Eatrhβs Crust, SB RAS, 128 Lermontov St., 640033, Irkutsk, Russian Federation2Irkutsk State University, 1 K. Marx St., 664003, Irkutsk, Russian Federation3Vinogradov Institute of Geochemistry, SB RAS, 1Π Favorsky st., 664033, Irkutsk, Russian Federation4Irkutsk National Research Technical University, 83 Lermontov st., 664074, Irkutsk, Russian Federation5Irkutsk Regional Museum of Local Lore; 13 K. Marx st., 664003, Irkutsk, Russian FederationΠΠ»Ρ ΠΈΠ·ΡΡΠ΅Π½ΠΈΡ ΡΠ»Π΅ΠΌΠ΅Π½ΡΠ½ΠΎΠ³ΠΎ ΡΠΎΡΡΠ°Π²Π° Π΄ΡΠ΅Π²Π½Π΅ΠΉ ΠΊΠ΅ΡΠ°ΠΌΠΈΠΊΠΈ ΡΠΏΠΎΡ
ΠΈ ΠΏΠΎΠ·Π΄Π½Π΅Π³ΠΎ Π½Π΅ΠΎΠ»ΠΈΡΠ° ΡΡΠΎΡΠ½ΠΊΠΈ-ΠΌΠΎΠ³ΠΈΠ»ΡΠ½ΠΈΠΊΠ° ΠΠΎΠΏΠΎΠ²ΡΠΊΠΈΠΉ ΠΡΠ³ (ΡΠ°ΠΉΠΎΠ½ ΠΏΠΎΡΠ΅Π»ΠΊΠ° ΠΠ°ΡΡΠ³, Π²Π΅ΡΡ
ΠΎΠ²ΡΠ΅ ΡΠ΅ΠΊΠΈ ΠΠ΅Π½Ρ, Π ΠΎΡΡΠΈΡ) ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ Π΄Π²Π° Π²Π°ΡΠΈΠ°Π½ΡΠ° ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΠ»ΡΠΎΡΠ΅ΡΡΠ΅Π½ΡΠ½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π°: ΡΡΠ°Π΄ΠΈΡΠΈΠΎΠ½Π½ΡΠΉ ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΠ»ΡΠΎΡΠ΅ΡΡΠ΅Π½ΡΠ½ΡΠΉ Π°Π½Π°Π»ΠΈΠ· Ρ Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠΉ Π΄ΠΈΡΠΏΠ΅ΡΡΠΈΠ΅ΠΉ (WDXRF) ΠΈ ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΠ»ΡΠΎΡΠ΅ΡΡΠ΅Π½ΡΠ½ΡΠΉ Π°Π½Π°Π»ΠΈΠ· Ρ ΠΏΠΎΠ»Π½ΡΠΌ Π²Π½Π΅ΡΠ½ΠΈΠΌ ΠΎΡΡΠ°ΠΆΠ΅Π½ΠΈΠ΅ΠΌ (TXRF). ΠΡΠΈΠ±Π»ΠΈΠΆΠ΅Π½Π½ΠΎ-ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΠΉ Π°Π½Π°Π»ΠΈΠ· ΡΡΠ°Π³ΠΌΠ΅Π½ΡΠΎΠ² ΠΊΠ΅ΡΠ°ΠΌΠΈΠΊΠΈ Π±Π΅Π· ΠΈΠ·ΠΌΠ΅Π»ΡΡΠ΅Π½ΠΈΡ ΠΏΠΎΠΊΠ°Π·Π°Π», ΡΡΠΎ ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΡ Π²Π½Π΅ΡΠ½Π΅ΠΉ ΠΈ Π²Π½ΡΡΡΠ΅Π½Π½Π΅ΠΉ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΡΡΠ°Π³ΠΌΠ΅Π½ΡΠΎΠ² ΠΊΠ΅ΡΠ°ΠΌΠΈΠΊΠΈ ΡΠ²Π»ΡΡΡΡΡ ΠΌΠ΅Π½Π΅Π΅ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠ²Π½ΡΠΌΠΈ, ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΠ΅ΠΌ Π΅Π΅ ΡΡΠ΅Π·Π°. ΠΠΏΡΠΎΠ±ΠΈΡΠΎΠ²Π°Π½Ρ ΡΠΏΠΎΡΠΎΠ±Ρ ΠΏΠΎΠ΄Π³ΠΎΡΠΎΠ²ΠΊΠΈ ΠΏΡΠΎΠ±, ΠΎΡΠΈΠ΅Π½ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΠ΅ Π½Π° Π°Π½Π°Π»ΠΈΠ· ΠΌΠ°Π»ΡΡ
Π½Π°Π²Π΅ΡΠΎΠΊ ΠΈΠ·ΠΌΠ΅Π»ΡΡΠ΅Π½Π½ΠΎΠΉ ΠΊΠ΅ΡΠ°ΠΌΠΈΠΊΠΈ Ρ ΡΠ΅Π»ΡΡ ΡΠΎΡ
ΡΠ°Π½Π΅Π½ΠΈΡ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π°: ΡΠΏΠ»Π°Π²Π»Π΅Π½ΠΈΠ΅, ΠΏΡΠ΅ΡΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΈ ΠΏΡΠΈΠ³ΠΎΡΠΎΠ²Π»Π΅Π½ΠΈΠ΅ ΡΡΡΠΏΠ΅Π½Π·ΠΈΠΉ. ΠΠ»Ρ WDXRF ΠΈΠ·Π»ΡΡΠ°ΡΠ΅Π»ΠΈ Π³ΠΎΡΠΎΠ²ΠΈΠ»ΠΈ Π² Π²ΠΈΠ΄Π΅ ΡΠΏΠ»Π°Π²Π»Π΅Π½Π½ΡΡ
ΡΡΠ΅ΠΊΠΎΠ» ΠΈΠ· 150 ΠΌΠ³ ΠΏΡΠΎΠ±Ρ, Π° ΡΠ°ΠΊΠΆΠ΅ Π² Π²ΠΈΠ΄Π΅ ΠΏΡΠ΅ΡΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠ°Π±Π»Π΅ΡΠΎΠΊ ΠΈΠ· 250 ΠΌΠ³ ΠΏΡΠΎΠ±Ρ. ΠΠ»Ρ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ TXRF ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΠΈ ΡΡΡΠΏΠ΅Π½Π·ΠΈΠΈ ΠΈΠ· 20 ΠΌΠ³ ΠΏΡΠΎΠ±Ρ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Π²ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΡΠ°ΡΡΠ²ΠΎΡΠ° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎ-Π°ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π²Π΅ΡΠ΅ΡΡΠ²Π° Triton X-100. Π ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ ΠΏΡΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠΈ ΠΏΠΎΡΠΎΠ΄ΠΎΠΎΠ±ΡΠ°Π·ΡΡΡΠΈΡ
ΠΎΠΊΡΠΈΠ΄ΠΎΠ² ΠΏΡΠΈΠΌΠ΅Π½ΡΠ»ΠΈ Π°ΡΡΠ΅ΡΡΠΎΠ²Π°Π½Π½ΡΠ΅ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π°, ΠΏΡΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠΈ ΠΌΠΈΠΊΡΠΎΡΠ»Π΅ΠΌΠ΅Π½ΡΠΎΠ² β ΠΌΠ΅ΡΠΎΠ΄ ΠΌΠ°ΡΡ-ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΠΈΠΈ Ρ ΠΈΠ½Π΄ΡΠΊΡΠΈΠ²Π½ΠΎ-ΡΠ²ΡΠ·Π°Π½Π½ΠΎΠΉ ΠΏΠ»Π°Π·ΠΌΠΎΠΉ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½Π½ΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ, ΡΡΠΎ Π΄Π»Ρ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ Π΄Π°Π½Π½ΡΡ
ΠΎΠ± ΡΠ»Π΅ΠΌΠ΅Π½ΡΠ½ΠΎΠΌ Π²Π°Π»ΠΎΠ²ΠΎΠΌ ΡΠΎΡΡΠ°Π²Π΅ Π°ΡΡ
Π΅ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΊΠ΅ΡΠ°ΠΌΠΈΠΊΠΈ ΠΏΡΠ΅Π΄ΠΏΠΎΡΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΊΠΎΠΌΠ±ΠΈΠ½Π°ΡΠΈΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² WDXRF (ΡΡΠ΅ΠΊΠ»ΠΎ) ΠΈ TXRF (ΡΡΡΠΏΠ΅Π½Π·ΠΈΡ). ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π½Π°Ρ ΡΡ
Π΅ΠΌΠ° ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΡΡ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠ΅ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ Na, Mg, Al, Si, P, K, Ca, Ti, Mn, Fe, V, Cr, Ni, Cu, Zn, Ga, Rb, Sr, Y, Zr, Pb ΠΈ Ba ΠΈΠ· Π½Π°Π²Π΅ΡΠΊΠΈ ΠΈΠ·ΠΌΠ΅Π»ΡΡΠ΅Π½Π½ΠΎΠΉ ΠΊΠ΅ΡΠ°ΠΌΠΈΠΊΠΈ ΠΌΠ°ΡΡΠΎΠΉ ΠΏΡΠΈΠΌΠ΅ΡΠ½ΠΎ 170 ΠΌΠ³.ΠΠ»ΡΡΠ΅Π²ΡΠ΅ ΡΠ»ΠΎΠ²Π°: ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΠ»ΡΠΎΡΠ΅ΡΡΠ΅Π½ΡΠ½ΡΠΉ Π°Π½Π°Π»ΠΈΠ· Ρ Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠΉ Π΄ΠΈΡΠΏΠ΅ΡΡΠΈΠ΅ΠΉ, ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΠ»ΡΠΎΡΠ΅ΡΡΠ΅Π½ΡΠ½ΡΠΉ Π°Π½Π°Π»ΠΈΠ· Ρ ΠΏΠΎΠ»Π½ΡΠΌ Π²Π½Π΅ΡΠ½ΠΈΠΌ ΠΎΡΡΠ°ΠΆΠ΅Π½ΠΈΠ΅ΠΌ, ΠΊΠ΅ΡΠ°ΠΌΠΈΠΊΠ°, Π°ΡΡ
Π΅ΠΎΠ»ΠΎΠ³ΠΈΡ, ΠΠΎΠΏΠΎΠ²ΡΠΊΠΈΠΉ ΠΡΠ³, ΠΠ΅ΡΡ
Π½ΡΡ ΠΠ΅Π½Π°DOI: http://dx.doi.org/10.15826/analitika.2020.25.1.00
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