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Journal articles on the topic 'Samarskite'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Hanson, S. L., W. B. Simmons, A. U. Falster, E. E. Foord, and F. E. Lichte. "Proposed nomenclature for samarskite-group minerals: new data on ishikawaite and calciosamarskite." Mineralogical Magazine 63, no. 1 (1999): 27–36. http://dx.doi.org/10.1180/002646199548286.

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AbstractThe current definition of samarskite-group minerals suggests that ishikawaite is a uranium rich variety of samarskite whereas calciosamarskite is a calcium rich variety of samarskite. Because these minerals are chemically complex, usually completely metamict, and pervasively altered, their crystal chemistry and structure are poorly understood. Warner and Ewing (1993) proposed that samarskite is an A3+B5+O4 mineral with an atomic arrangement related to α-PbO2. X-ray diffraction analyses of the recrystallized type specimen of ishikawaite and the Ca-rich samarskite reveal that they have t

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2

Guastoni, Alessandro, Luciano Secco, Radek Škoda, et al. "Non-Metamict Aeschynite-(Y), Polycrase-(Y), and Samarskite-(Y) in NYF Pegmatites from Arvogno, Vigezzo Valley (Central Alps, Italy)." Minerals 9, no. 5 (2019): 313. http://dx.doi.org/10.3390/min9050313.

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At Arvogno, Vigezzo valley in the Central Alps, Italy, pegmatite dikes are unique in the scenario of a tertiary alpine pegmatite field because they show marked geochemical and mineralogical niobium–yttrium–fluorine features. These pegmatites contain AB2O6 aeschynite group minerals and ABX2O8 euxenite group minerals as typical accessory minerals including aeschynite-(Y), polycrase-(Y), and samarskite-(Y). They are associated with additional typical minerals such as fluorite, Y-dominant silicates, and xenotime-(Y). The Y–Nb–Ti–Ta AB2O6 and ABX2O8 oxides at the Arvogno pegmatites did not exhibit

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3

Simmons, W. B., S. L. Hanson, and A. U. Falster. "SAMARSKITE-(Yb): A NEW SPECIES OF THE SAMARSKITE GROUP FROM THE LITTLE PATSY PEGMATITE, JEFFERSON COUNTY, COLORADO." Canadian Mineralogist 44, no. 5 (2006): 1119–25. http://dx.doi.org/10.2113/gscanmin.44.5.1119.

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4

Malczewski, Dariusz, and Maria Dziurowicz. "222Rn and 220Rn emanations from powdered samples of samarskite as a function of annealing temperature." American Mineralogist 105, no. 5 (2020): 708–15. http://dx.doi.org/10.2138/am-2020-6988.

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Abstract Emanation coefficients for radon (222Rn) and thoron (220Rn) were measured from fully metamict samarskite collected from Centennial Cone after 1 h and 24 h annealing in argon from 473 to 1373 K. For the 1 h annealing run, 222Rn emanation coefficients ranged from 5 × 10-6 to 2.1 × 10-5 %, while 220Rn coefficients varied from 6.3 × 10-3 to 2 × 10-2 %. For the 24 h annealing run, 222Rn coefficients ranged from 5.8 × 10-6 to 2.3 × 10-5 %, while 220Rn coefficients varied from 4.1 × 10-3 to 1.5 × 10-2 %. The 222Rn and 220Rn emanation coefficients vs. annealing temperature data can be describ

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5

Uher, P., M. Ondrejka, and P. Konečný. "Magmatic and post-magmatic Y-REE-Th phosphate, silicate and Nb-Ta-Y-REE oxide minerals in A-type metagranite: an example from the Turčok massif, the Western Carpathians, Slovakia." Mineralogical Magazine 73, no. 6 (2009): 1009–25. http://dx.doi.org/10.1180/minmag.2009.073.6.1009.

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AbstractAn electron microprobe study of Y-REE-Th phosphate, silicate and Nb-Ta-Y-REE accessory-mineral assemblages revealed the compositional variations and evolution in post-orogenic, hypersolvus Permian A-type metagranite from Turčok, in the Gemeric Unit, of the Western Carpathians, eastern Slovakia. Prismatic zircon I and allanite-(Ce) are primary magmatic phases. However, the late-magmatic to early-subsolidus processes led to the formation of a more complex younger assemblage: bipyramidal zircon II, xenotime-(Y), thorite, gadolinite-hingganite-(Y), Nb-Ta-Y-REE oxide phases [fergusonite-(be

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6

Davis, Fred E., and Stefan Nicolescu. "Samarskite Rediscovered at the Spinelli Prospect, Glastonbury, Connecticut." Bulletin of the Peabody Museum of Natural History 52, no. 1 (2011): 135–52. http://dx.doi.org/10.3374/014.052.0104.

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7

Lumpkin, G. R., R. C. Ewing, and Y. Eyal. "Preferential leaching and natural annealing of alpha-recoil tracks in metamict betaflte and samarskite." Journal of Materials Research 3, no. 2 (1988): 357–68. http://dx.doi.org/10.1557/jmr.1988.0357.

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Leaching experiments on naturally occurring, metamict betafite and samarskite minerals in a bicarbonate-carbonate solution show strongly enhanced release to the solution of short-lived 228Th relative to its parent isotope 232Th (by a factor of 3 to 6), but only slightly enhanced dissolution (by a factor of 1.2 to 2) of long-lived 234U and 230Th relative to 238U and 232Th, respectively. The betafite (a complex Ca–U–Ti–Nb oxide of the pyrochlore group, A2−mB2X6Y0−1.H2O) and samarskite (a complex Y–Fe–U–Nb oxide with varying stoichiometry between AB O4 and AB2O6) are x-ray and electron diffractio

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8

Capitani, Gian Carlo, Enrico Mugnaioli, and Alessandro Guastoni. "What is the actual structure of samarskite-(Y)? A TEM investigation of metamict samarskite from the Garnet Codera dike pegmatite (Central Italian Alps)." American Mineralogist 101, no. 7 (2016): 1679–90. http://dx.doi.org/10.2138/am-2016-5605.

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9

AKIMOTO, Junji, Akinori UEJIMA, and Yosinori SUGITANI. "Studies on annealing conditions for recovering the original samarskite structure." Journal of the Mineralogical Society of Japan 17, no. 4 (1986): 159–68. http://dx.doi.org/10.2465/gkk1952.17.159.

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10

Malczewski, Dariusz, and Agnieszka Grabias. "Preliminary results of 57Fe Mössbauer spectroscopy of metamict samarskite after one-hour high temperature annealing in argon." Nukleonika 62, no. 2 (2017): 141–44. http://dx.doi.org/10.1515/nuka-2017-0020.

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Abstract The preliminary results of 57Fe Mössbauer spectroscopy and X-ray diffraction (XRD) of fully metamict samarskite dated at ~1500 Ma, which absorbed α-dose of 6.5 × 1017 α-decay mg-1, are reported after one-hour annealing at 673, 873, 1173 and 1373 K in argon atmosphere. Metamict minerals contain radioactive elements that degrade their crystal structures over geological time. All the Mössbauer spectra obtained can be fitted to two quadrupole doublets assigned to Fe2+ and Fe3+ in octahedral positions. The relative contribution of Fe2+ (Fe2+/Fe) reaches a minimum of 0.10 at 1173 K.

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11

Tomašić, Nenad, Andreja Gajović, Vladimir Bermanec, Maša Linarić, and Dangsheng Š. koda Rajić Su. "Preservation of the samarskite structure in a metamict ABO4 mineral: a key to crystal structure identification." European Journal of Mineralogy 22, no. 3 (2010): 435–42. http://dx.doi.org/10.1127/0935-1221/2010/0022-2032.

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12

Raslan, Mohamed Fahmy. "Occurrence of Samarskite-Y in the Mineralized Umm Lassifa Pegmatite, Central Eastern Desert, Egypt." Geologija 58, no. 2 (2015): 213–20. http://dx.doi.org/10.5474/geologija.2015.017.

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13

Raslan, Mohamed Fahmy. "Occurrence of Ishikawaite (Uranium-Rich Samarskite) in the Mineralized Abu Rushied Gneiss, Southeastern Desert, Egypt." International Geology Review 50, no. 12 (2008): 1132–40. http://dx.doi.org/10.2747/0020-6814.50.12.1132.

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14

Pieczka, Adam, Adam Szuszkiewicz, Eligiusz Szełęg, Sławomir Ilnicki, Krzysztof Nejbert, and Krzysztof Turniak. "SAMARSKITE-GROUP MINERALS AND ALTERATION PRODUCTS: AN EXAMPLE FROM THE JULIANNA PEGMATITIC SYSTEM, PIŁAWA GÓRNA, SW POLAND." Canadian Mineralogist 52, no. 2 (2014): 303–19. http://dx.doi.org/10.3749/canmin.52.2.303.

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15

Britvin, Sergey N., Igor V. Pekov, Maria G. Krzhizhanovskaya, et al. "Redefinition and crystal chemistry of samarskite-(Y), YFe3+Nb2O8: cation-ordered niobate structurally related to layered double tungstates." Physics and Chemistry of Minerals 46, no. 7 (2019): 727–41. http://dx.doi.org/10.1007/s00269-019-01034-0.

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16

Li, Ting, Ziying Li, Guang Fan, et al. "Hydroxyplumbopyrochlore, (Pb1.5,□0.5)Nb2O6(OH), a new member of the pyrochlore group from Jabal Sayid, Saudi Arabia." Mineralogical Magazine 84, no. 5 (2020): 785–90. http://dx.doi.org/10.1180/mgm.2020.69.

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ABSTRACTA new mineral species of the pyrochlore supergroup, hydroxyplumbopyrochlore (IMA2018-145), (Pb1.5,□0.5)Nb2O6(OH), has been discovered in the Jabal Sayid peralkaline granitic complex of the Arabian Shield, Saudi Arabia. It is associated with quartz, microcline, ‘biotite’, rutile, zircon, calcite, rhodochrosite, columbite-(Fe), goethite, thorite, bastnäsite-(Ce), xenotime-(Y), samarskite-(Y), euxenite-(Y), hydropyrochlore and fluornatropyrochlore. Hydroxyplumbopyrochlore usually shows euhedral octahedra, slightly rhombic dodecahedra and cubes or their combination (0.01–0.06 mm). The mine

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17

Malczewski, Dariusz, and Agnieszka Grabias. "Erratum to “Preliminary results of 57Fe Mössbauer spectroscopy of metamict samarskite after one-hour high temperature annealing in argon” [Nukleonika 2017;62(2):141-144]." Nukleonika 62, no. 4 (2017): 311. http://dx.doi.org/10.1515/nuka-2017-0045.

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18

Ablah Ahmad Ragab, Ablah Ahmad Ragab. "Geochemistry and Radioactivity of Mineralized Pegmatite from Abu Rusheid Area, South Eastern Desert, Egypt." journal of king abdulaziz university earth sciences 22, no. 2 (2011): 99–130. http://dx.doi.org/10.4197/ear.22-2.5.

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The mineralized pegmatite of Abu-Rusheid area, S. Eastern Desert, has quartz core and feldspars and mica margins. This pegamtite was analyzed by the Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) to determine the content of the major and trace elements including the rare earth elements (REE). The mineralized pegmatite vein trends NNW-SSE with dip of about 10- 30° due WSW. It is emplaced parallel to foliation and banding of the cataclastic country rocks. The studied pegmatite is classified as rare metals-enriched and shows a zonal distribution from the barren core to the mineralized wall

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19

Belotserkovskii, O. M., B. N. Chetverushkin, A. V. Gulin, et al. "Aleksandr Andreevich Samarskii." Differential Equations 44, no. 7 (2008): 1039–40. http://dx.doi.org/10.1134/s0012266108070185.

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20

Chetverushkin, B. N., and A. P. Mikhailov. "Triad of Samarskii. The 100th anniversary of academician A.A. Samarskii." Вестник Российской академии наук 89, no. 2 (2019): 187–93. http://dx.doi.org/10.31857/s0869-5873892187-193.

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The paper presents a brief description of the life and scientific creativity of Academician A.A. Samarskii, an outstanding scholar with a worldwide reputation, the founder of the Russian tradition of mathematical modeling and the creator of the fundamental theory of difference schemes. The evolution of Samarskii’s concept of mathematical modeling and computational experimentation is traced from the end of the 1940s to the era of the information society. The basis of this concept and the associated research methodology was Samarskii’s concept of the famous “Model–Algorithm–Program” triad, which

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21

Lappo, Irina. "«Samarski smutek» Osterwy." Pamiętnik Teatralny 69, no. 2 (2020): 73–97. http://dx.doi.org/10.36744/pt.331.

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Artykuł jest próbą interpretacji znaczenia pobytu Juliusza Osterwy w Samarze (lipiec 1915–luty 1916) w procesie jego artystycznego rozwoju. Podstawę interpretacji stanowi literatura dokumentu osobistego: Zeszyt samarski i list do Makuszyńskiego z 1915 oraz wspomnienia artysty z lat trzydziestych. Obraz samarskiego życia Osterwy uzupełniają prace rosyjskich historyków rekonstruujących losy polskich uchodźców podczas I wojny światowej. Konfrontacja obrazu Samary wyłaniającego się z prac historycznych z obrazem nakreślonym w zapiskach Osterwy umożliwia ukazanie mechanizmu przesłaniania bolesnych

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22

Vabishchevich, P. N. "Works of A.A. Samarskii on Computational Mathematics." Computational Methods in Applied Mathematics 9, no. 1 (2009): 5–36. http://dx.doi.org/10.2478/cmam-2009-0002.

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Abstract This is a review of the main results in computational mathematics that were obtained by the eminent Russian mathematician Alexander Andreevich Samarskii (February 19, 1919 – February 11, 2008). His outstanding research output addresses all the main questions that arise in the construction and justification of algorithms for the numerical solution of problems from mathematical physics. The remarkable works of A.A. Samarskii include statements of the main principles re- quired in the construction of difference schemes, rigorous mathematical proofs of the stability and convergence of the

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23

Ashyralyyev, Charyyar, and Gulzipa Akyuz. "Finite difference method for Bitsadze-Samarskii type overdetermined elliptic problem with Dirichlet conditions." Filomat 32, no. 3 (2018): 859–72. http://dx.doi.org/10.2298/fil1803859a.

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In this paper, we apply finite difference method to Bitsadze-Samarskii type overdetermined elliptic problem with Dirichlet conditions. Stability, coercive stability inequalities for solution of the first and second order of accuracy difference schemes (ADSs) are proved. Then, established abstract results are applied to get stable difference schemes for Bitsadze-Samarskii type overdetermined elliptic multidimensional differential problems with multipoint nonlocal boundary conditions. Finally, numerical results with explanation on the realization in two dimensional and three dimensional cases ar

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24

Chabrowski, J. H. "On solvability of boundary value problem for elliptic equations with Bitsadze-Samarskiĭ condition." International Journal of Mathematics and Mathematical Sciences 11, no. 1 (1988): 101–13. http://dx.doi.org/10.1155/s0161171288000158.

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In this paper we investigate the solvability of a non-local problem for a linear elliptic equation, which is also known as the boundary value problem with the Bitsadze-Samarskiĭ condition. We prove the existence and uniqueness of a classical solution to this problem. In the final part of this paper we propose anL2-approach which gives a rise to weak solutions in a weighted Sobolev space. The crucial point in proving the existence of weak solutions is a suitable modification of the Bitsadze-Samarskiĭ condition.

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25

Malczewski, Dariusz, Agnieszka Grabias, and Grzegorz Dercz. "57Fe Mössbauer spectroscopy of radiation damaged samarskites and gadolinites." Hyperfine Interactions 195, no. 1-3 (2009): 85–91. http://dx.doi.org/10.1007/s10751-009-0105-7.

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26

Ashyralyev, A., Y. Sozen, and F. Hezenci. "A remark on elliptic differential equations on manifold." BULLETIN OF THE KARAGANDA UNIVERSITY-MATHEMATICS 99, no. 3 (2020): 75–85. http://dx.doi.org/10.31489/2020m3/75-85.

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For elliptic boundary value problems of nonlocal type in Euclidean space, the well posedness has been studied by several authors and it has been well understood. On the other hand, such kind of problems on manifolds have not been studied yet. Present article considers differential equations on smooth closed manifolds. It establishes the well posedness of nonlocal boundary value problems of elliptic type, namely Neumann-Bitsadze-Samarskii type nonlocal boundary value problem on manifolds and also DirichletBitsadze-Samarskii type nonlocal boundary value problem on manifolds, in H¨older spaces. I

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27

Şen, Erdoğan, and Artūras Štikonas. "ASYMPTOTIC DISTRIBUTION OF EIGENVALUES AND EIGENFUNCTIONS OF A NONLOCAL BOUNDARY VALUE PROBLEM." Mathematical Modelling and Analysis 26, no. 2 (2021): 253–66. http://dx.doi.org/10.3846/mma.2021.13056.

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28

Imanbaev, N. S. "On Stability of Basis Property of Root Vectors System of the Sturm-Liouville Operator with an Integral Perturbation of Conditions in Nonstrongly Regular Samarskii-Ionkin Type Problems." International Journal of Differential Equations 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/641481.

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We study a question on stability and instability of basis property of system of eigenfunctions and associated functions of the double differentiation operator with an integral perturbation of Samarskii-Ionkin type boundary conditions.

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29

Jangveladze, Temur, Zurab Kiguradze, and George Lobjanidze. "Variational Statement and Domain Decomposition Algorithms for Bitsadze-Samarskii Nonlocal Boundary Value Problem for Poisson’s Two-Dimensional Equation." International Journal of Partial Differential Equations 2014 (June 19, 2014): 1–8. http://dx.doi.org/10.1155/2014/680760.

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The Bitsadze-Samarskii nonlocal boundary value problem is considered. Variational formulation is done. The domain decomposition and Schwarz-type iterative methods are used. The parallel algorithm as well as sequential ones is investigated.

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30

Yessirkegenov, Nurgissa. "Spectral properties of the generalised Samarskii-Ionkin type problems." Filomat 32, no. 3 (2018): 1019–24. http://dx.doi.org/10.2298/fil1803019y.

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In this paper, we study spectral properties of the Laplace operator with generalised Samarskii-Ionkin boundary conditions in a disk. The eigenfunctions and eigenvalues of these problems are constructed in the explicit form. Moreover, we prove the completeness of these eigenfunctions

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31

Emel'yanov, S. V. "Alexandr Andreevich Samarskii (on his 80th birthday)." Russian Mathematical Surveys 54, no. 5 (1999): 1087–89. http://dx.doi.org/10.1070/rm1999v054n05abeh000228.

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32

Al-Sultani, Mohamed Saleh Mehdi, and Igor Boglaev. "Numerical solution of nonlinear elliptic systems by block monotone iterations." ANZIAM Journal 60 (July 12, 2019): C79—C94. http://dx.doi.org/10.21914/anziamj.v60i0.13986.

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We present numerical methods for solving a coupled system of nonlinear elliptic problems, where reaction functions are quasimonotone nondecreasing. We utilize block monotone iterative methods based on the Jacobi and Gauss--Seidel methods incorporated with the upper and lower solutions method. A convergence analysis and the theorem on uniqueness of solutions are discussed. Numerical experiments are presented.   References Boglaev, I., Monotone iterates for solving systems of semilinear elliptic equations and applications, ANZIAM J, Proceedings of the 8th Biennial Engineering Mathema

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33

Skučaitė-Bingelė, Kristina, and Artūras Štikonas. "Investigation of the spectrum for Sturm–Liouville problems with a nonlocal boundary condition." Lietuvos matematikos rinkinys 54 (December 15, 2013): 73–78. http://dx.doi.org/10.15388/lmr.a.2013.16.

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In this paper, we analyze the Sturm–Liouville problem with one classical first type boundary condition and the other Samarskii–Bitsadze type nonlocal boundary condition. We investigate how the spectrum of this problem depends on the parameters γ and ξ of the nonlocal boundary condition. Some new results are given as graphs of the characteristic function.

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34

Nakhusheva, Z. A. "The Samarskii problem for the fractal diffusion equation." Mathematical Notes 95, no. 5-6 (2014): 815–19. http://dx.doi.org/10.1134/s0001434614050265.

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35

Salakhitdinov, M. S., and M. Mirsaburov. "On some analog of the Bitsadze-Samarskiî problem." Siberian Mathematical Journal 40, no. 1 (1999): 153–57. http://dx.doi.org/10.1007/bf02674302.

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36

Soldatov, A. P. "The Bitsadze-Samarskii Problem for Douglis Analytic Functions." Differential Equations 41, no. 3 (2005): 416–28. http://dx.doi.org/10.1007/s10625-005-0173-7.

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37

Ashyralyev, Allaberen, and Elif Ozturk. "Stability of difference schemes for Bitsadze-Samarskii type nonlocal boundary value problem involving integral condition." Filomat 28, no. 5 (2014): 1027–47. http://dx.doi.org/10.2298/fil1405027a.

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In this study, the stable difference schemes for the numerical solution of Bitsadze-Samarskii type nonlocal boundary-value problem involving integral condition for the elliptic equations are studied. The second and fourth orders of the accuracy difference schemes are presented. A procedure of modified Gauss elimination method is used for solving these difference schemes for the two-dimensional elliptic differential equation. The method is illustrated by numerical examples.

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38

Kal’menov, T. Sh, M. Otelbaev, and G. D. Arepova. "Bitsadze–Samarskii Boundary Condition for Elliptic-Parabolic Volume Potential." Doklady Mathematics 97, no. 3 (2018): 223–26. http://dx.doi.org/10.1134/s1064562418030079.

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39

Ashyralyev, Allaberen, and Fatma Songul Ozesenli Tetikoglu. "FDM for Elliptic Equations with Bitsadze-Samarskii-Dirichlet Conditions." Abstract and Applied Analysis 2012 (2012): 1–22. http://dx.doi.org/10.1155/2012/454831.

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A numerical method is proposed for solving nonlocal boundary value problem for the multidimensional elliptic partial differential equation with the Bitsadze-Samarskii-Dirichlet condition. The first and second-orders of accuracy stable difference schemes for the approximate solution of this nonlocal boundary value problem are presented. The stability estimates, coercivity, and almost coercivity inequalities for solution of these schemes are established. The theoretical statements for the solutions of these nonlocal elliptic problems are supported by results of numerical examples.

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40

Repin, O. A. "Bitsadze-Samarskii boundary-value problem for moisture transport equation." Journal of Soviet Mathematics 66, no. 3 (1993): 2268–71. http://dx.doi.org/10.1007/bf01229595.

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41

Arkhipov, Vladimir, Alexander Nee, and Lily Valieva. "Numerical Simulation of Heat Transfer in a Closed Two-Phase Thermosiphon." Key Engineering Materials 743 (July 2017): 449–53. http://dx.doi.org/10.4028/www.scientific.net/kem.743.449.

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This paper presents the results of mathematical modelling of three–dimensional heat transfer in a closed two-phase thermosyphon taking into account phase transitions. Three-dimensional conduction equation was solved by means of the finite difference method (FDM). Locally one-dimensional scheme of Samarskiy was used to approximate the differential equations. The effect of the thermosyphon height and temperature of its bottom lid on the temperature difference in the vapor section was shown.

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42

Karachik, Valery, and Batirkhan Turmetov. "On solvability of some nonlocal boundary value problems for biharmonic equation." Mathematica Slovaca 70, no. 2 (2020): 329–42. http://dx.doi.org/10.1515/ms-2017-0355.

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Abstract In this paper a new class of well-posed boundary value problems for the biharmonic equation is studied. The considered problems are nonlocal boundary value problems of Bitsadze- -Samarskii type. These problems are solved by reducing them to Dirichlet and Neumann type problems. Theorems on existence and uniqueness of the solution are proved and exact solvability conditions of the considered problems are found. In addition, the integral representations of solutions are obtained.

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43

Belabid, Jabrane, and Abdelkhalek Cheddadi. "Comparative Numerical Simulation of Natural Convection in a Porous Horizontal Cylindrical Annulus." Applied Mechanics and Materials 670-671 (October 2014): 613–16. http://dx.doi.org/10.4028/www.scientific.net/amm.670-671.613.

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This work presents a numerical study of the natural convection in a saturated porous medium bounded by two horizontal concentric cylinders. The governing equations (in the stream function and temperature formulation) were solved using the ADI (Alternating Direction Implicit) method and the Samarskii-Andreev scheme. A comparison between the two methods is conducted. In both cases, the results obtained for the heat transfer rate given by the Nusselt number are in a good agreement with the available published data.

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44

Бирюков, В. В., Д. С. Ракицкий, and С. А. Петропавловский. "Improvement and development of the water supply and wastewater disposal systems in Samara." Vodosnabzhenie i sanitarnaia tehnika, no. 9 (September 13, 2021): 14–21. http://dx.doi.org/10.35776/vst.2021.09.02.

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Представлена информация о разработке специалистами ООО «Самарские коммунальные системы» инвестиционной программы по строительству, реконструкции и модернизации систем коммунального водоснабжения и водоотведения г. о. Самара на 2019–2023 годы в соответствии с «Концепцией развития и реконструкции систем водоснабжения и водоотведения г. о. Самара на 2018–2047 годы». ООО «Самарские коммунальные системы» с 2013 по 2019 г., за период действия государственно-частного партнерства, реализованы мероприятия по строительству, реконструкции и модернизации систем коммунального водоснабжения и водоотведения

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Mirsaburov, M., I. N. Khairullaev, and U. E. Bobomurodov. "A generalization of Bitsadze–Samarskii problem for mixed type equation." Russian Mathematics 60, no. 10 (2016): 29–32. http://dx.doi.org/10.3103/s1066369x16100054.

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Baderko, E. A., and M. F. Cherepova. "Bitsadze–Samarskii problem for a parabolic system on the plane." Doklady Mathematics 94, no. 3 (2016): 670–72. http://dx.doi.org/10.1134/s1064562416060211.

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Gulin, A. V., and N. S. Udovichenko. "Difference scheme for the Samarskii-Ionkin problem with a parameter." Differential Equations 44, no. 7 (2008): 991–98. http://dx.doi.org/10.1134/s0012266108070112.

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Baderko, E. A., and M. F. Cherepova. "Bitsadze–Samarskii problem for parabolic systems with Dini continuous coefficients." Complex Variables and Elliptic Equations 64, no. 5 (2018): 753–65. http://dx.doi.org/10.1080/17476933.2018.1501039.

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Štikonas, Artūras, and Olga Štikonienė. "CHARACTERISTIC FUNCTIONS FOR STURM—LIOUVILLE PROBLEMS WITH NONLOCAL BOUNDARY CONDITIONS." Mathematical Modelling and Analysis 14, no. 2 (2009): 229–46. http://dx.doi.org/10.3846/1392-6292.2009.14.229-246.

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This paper presents some new results on a spectrum in a complex plane for the second order stationary differential equation with one Bitsadze‐Samarskii type nonlocal boundary condition. In this paper, we survey the characteristic function method for investigation of the spectrum of this problem. Some new results on characteristic functions are proved. Many results of this investigation are presented as graphs of characteristic functions. A definition of constant eigenvalues and the characteristic function is introduced for the Sturm‐Liouville problem with general nonlocal boundary conditions.

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Mamchuev, M. O. "NECESSARY NON-LOCAL CONDITIONS FOR A DIFFUSION-WAVE EQUATION." Vestnik of Samara University. Natural Science Series 20, no. 7 (2017): 45–59. http://dx.doi.org/10.18287/2541-7525-2014-20-7-45-59.

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In this article, diﬀusion-wave equation with fractional derivative in Rieman- n-Liouville sense is investigated. Integral operators with the Write function in the kernel associated with the investigational equation are introduced. In terms of these operators necessary non-local conditions binding traces of solution and its derivatives on the boundary of a rectangular domain are found. Necessary non-local conditions for the wave are obtained by using the limiting properties of Write function. By using the integral operator’s properties the theorem of existence and uniqueness of solution of the

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