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The article reviews the written sources of two large archives of the Chelyabinsk region, reflecting the activities of Orthodox parishes of large industrial settlements of the mining and processing Southern Urals during the years of revolutionary upheavals and the formation of Soviet power. The composition, features of the content, and information saturation of documents are revealed. Despite the limited information contained in the sources of the period under study, the documents described allow us to draw up an overall picture of the activities of Orthodox parishes.

Background and Objectives. A method for mineralizing polycaprolactone nanofibers by calcium carbonate (vaterite) microparticles containing nanoparticles of mixed iron oxide (magnetite) using the ultrasonic treatment is proposed. Materials and Methods: The process of recrystallization vaterite microparticles, which are part of the composite material, into calcite using X-ray diffraction and scanning electron microscopy was studied. Results: The resulting composite material can be used in tissue engineering as either a scaffold for cell growth or a drug carrier for their local release. Conclusion: It has been found that the complete process of recrystallization of vaterite into calcite takes about 27 hours, while the recrystallization rate increases significantly after 12 hours of exposure to water. According to X-ray diffraction data, there are no magnetic nanoparticles in the resulting coating by 24 o’clock. This is due to their gradual release as a result of the recrystallization of vaterite into calcite.

Recently, Bazhanov and Sergeev have described an Ising-type integrable model which can be identified as a sinh-Gordon-type model with an infinite number of states but with a real parameter q. This model is the subject of Sklyanin's Functional Bethe Ansatz. We develop in this paper the whole technique of the FBA which includes: (1) Construction of eigenstates of an off-diagonal element of a monodromy matrix. The most important ingredients of these eigenstates are the Clebsh-Gordan coefficients of the corresponding representation. (2) Separately, we discuss the Clebsh-Gordan coefficients, as well as the Wigner's 6j symbols, in details. The later are rather well known in the theory of 3 D indices. Thus, the Sklyanin basis of the quantum separation of variables is constructed. The matrix elements of an eigenstate of the auxiliary transfer matrix in this basis are products of functions satisfying the Baxter equation. Such functions are called usually the Q-operators. We investigate the Baxter equation and Q-operators from two points of view. (3) In the model considered the most convenient Bethe-type variables are the zeros of a Wronskian of two well defined particular solutions of the Baxter equation. This approach works perfectly in the thermodynamic limit. We calculate the distribution of these roots in the thermodynamic limit, and so we reproduce in this way the partition function of the model. (4) The real parameter q, which is the standard quantum group parameter, plays the role of the absolute temperature in the model considered. Expansion with respect to q (tropical expansion) gives an alternative way to establish the structure of the eigenstates. In this way we classify the elementary excitations over the ground state. [ABSTRACT FROM AUTHOR]

The Marun–Keu complex plays a significant role in our understanding of the geological evolution of the Ural orogen; however, it remains poorly understood. This study aims to provide insights into the complex's age, protolith composition, rock formation conditions, and its position in the geological history. The zircons from the host granitic gneiss are characterized by magmatic cores with an age of 473 Ma and metamorphic rims with an age of approximately 370 Ma. We suggest that the metamorphic rims were formed during eclogite metamorphism and that the metagranitoids hosting the eclogites experienced eclogite metamorphism simultaneously with the basic and ultrabasic rocks that are common in this area. Heterogeneous zircons were also isolated from the selvage of a pegmatite vein, in which four domains are distinguished, two to three of which can be identified within single grains, as follows: (1) igneous cores with an age of approximately 470 Ma and the geochemical characteristics of zircon crystallized in basic rocks; (2) zircons recrystallized during eclogite metamorphism with geochemical characteristics intermediate between those of the magmatic cores and true eclogitic zircon; (3) pegmatitic zircon, exhibiting the most sharply differentiated REE spectra of all four domains, characterized by a prominent positive Ce anomaly and a weakly expressed negative Eu anomaly; and (4) eclogitic zircon, observed in the form of veins and rims, superimposed in relation to the other three domains. The age of the latter three domains is within the error range and is estimated to be approximately 370 Ma. This indicates that the processes of eclogite metamorphism and the formation of pegmatites occurred at approximately the same time in the studied area. [ABSTRACT FROM AUTHOR]