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Article
High-Precision Cyclic Correlation as a Basis for Detailed Paleoclimatic Reconstructions for Crimean–Caucasian Region in the Jurassic
Astrochronological (cyclostratigraphic) referencing of the lithological and geochemical characteristics of Jurassic deposits of the Crimea Mountains and the Caucasus to the eccentricity cycles of Earth’s orbit...
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Article
Synthesis of 5-Halo-2ʹ-Azido Derivatives of Cytidine and N-Hydroxycytidine and Evaluation of Their Antiviral Activity on a Panel of RNA Viruses, Including SARS-CoV-2
Coronavirus disease 2019 (COVID-19) is a new global pandemic with high morbidity and mortality caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). N-Hydroxycytidine derivatives show promise fo...
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Article
The Geochemical Features of Microbial Carbonates of the Abalak and Georgian Formations in Western Siberia
Abstract—The geochemical and lithological features of bacterial–algal structures from the top of the Abalak and Georgia Formations in the central part of Western Siberia were studied in order to determine the spe...
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Article
Characterization of New Pentanuclear Copper(II) and REE(III) Carboxylate Complexes
New pentanuclear complexes [Cu3M2(CHF2COO)12(H2O)8]·2H2O, where M = Er (I) and Nd (II), were synthesized by reacting individual copper haloacetates and REE in aqueous solution. The molecular structure of complex
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Article
Conditions for the Formation of Siliceous Rocks of the Lower and Middle Cambrian in the Southeast of the Siberian Platform
A study of the microstructure and geochemical features of bedded cherts of the Inikan Formation (Є1–2in) from coastal outcrops of the Yudoma River shows that the key role in their formation apparently belongs to ...
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Article
The Conodont Biofacies Model of Shallow Paleoenvironments in the Frasnian (Late Devonian)
This article considers various criteria for distinguishing conodont biofacies and principles of reconstruction of conodont paleoecological models. The proposed model of conodont biofacies is based on the distr...
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Article
Cobalt Triflates [Co(H2O)6](CF3SO3)2 and Co(CF3SO3)2: Synthesis, Crystal Structures, Thermal Stability, and Magnetic Properties
Cobalt triflate hexahydrate [Co(H2O)6](CF3SO3)2 (I) is crystallized from aquos solution. The dehydration of salt I at 200°C in an argon flow affords anhydrous salt Co(CF3SO3)2 (II). The crystal structures of comp...
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Article
The Sedimentation Settings of the Abalak Formation and Vogulka Sequence on the Territory of the Kamennaya Crest of the Krasnoleninsky Arch (Western Siberia)
Abstract—Various sedimentation settings were distinguished in the Middle, Late Jurassic (J2k–J3v1) on the territory of the Kamennaya crest of the Krasnoleninsky arch in Western Siberia. It was established that cl...
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Article
Synthesis, Crystal Structure, and Thermal Properties of Metal-Containing Ionic Liquids with Spiro Cations: (Spiro)2MCl4 (Spiro = 2,8-Dioxo-5-azoniaspiro[4.5]decane or 2-Oxo-5-azoniaspiro[4.4]nonane, M = Mn, Ni, Co)
Metal-containing ionic liquids composed of the 2,8-dioxo-5-azoniaspiro[4.5]decane (MorphOx) and 2-oxo-5-azoniaspiro[4.4]nonane (PyrOx) spiro cations and tetrachlorometallate anions
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Article
Effect of Allelic Variants of Aromatic Alcohol Dehydrogenase CADim on Micromorphological and Chemical Tissue Indices in the Spring Bread Wheat Triticum aestivum L.
The inheritance of allelic variants of aromatic alcohol dehydrogenase CADim (CAD intermediate) and their effect on the severity of plant traits in spring bread wheat (fluorescence of seedling slices, micromorphol...
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Article
Synthesis and Crystal Structures of New Potassium Fluorotrifluoroacetatometallates: Kn[M3(µ3-F)(CF3COO)6L3]L' (M = Co, Ni; L = CF3COO–, CF3COOH, H2O; L' = CF3COOH, H2O; n = 1, 2)
Four new representatives of potassium fluorotrifluoroacetatometallates are synthesized and crystallographically studied: K2[Co3(µ3-F)(CF3COO)6(CF3COO)(CF3COOH)2]·CF3COOH (I), K[Co3(µ3-F)(CF3COO)6(H2O)3]·H2O·2CF3C...
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Article
Statistical Analysis of Results from the Attestation of Biological Standard Samples: Use of the Mann-Whitney Test
An algorithm for assessing the possibility of joining two datasets obtained by different operators for attestation of standard samples of biological medicinal substances (SS BMS) is proposed. These studies tes...
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Article
Structure and thermal behavior of two bimetallic carboxylates: Cs[M(CCl3COO)3(H2O)3], M = Co, Ni
Bimetallic trichloroacetates of the composition Cs[M(CCl3COO)3(H2O)3], where (I: M = Co, II: Ni) were synthesized. The structures of these compounds have been determined by the single crystal X-ray diffraction. T...
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Article
The Metasomatic Zoning and Sb Mineralization of the Yuzhnoe Ore Occurrence, Shilka Area, Transbaikalia
The results of a study of wall-rock metasomatites are presented on the basis of a complex mineralogical–structural approach, including the study of numerous publications, as well as original macro- and microsc...
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Article
The Structure and Formation Conditions of the Callovian–Oxfordian Deposits of Sudak Bay (Crimea)
The composition and origin of the Callovian–Oxfordian deposits of the Sudak Bay were characterized on the basis of the generalization and analysis of our own results, as well as published and unpublished data....
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Article
The Structure and Formation Conditions of the Bedenekir Formation Deposits (Thithonian Stage) of Mountainous Crimea
The composition and origin of the Bedenekir Formation deposits of Mountainous Crimea are detailed on the basis of our work results and analysis of both published and unpublished data.
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Article
Erratum to: “Trifluoroacetate complexes of 3d elements: Specific features of syntheses and structures”
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Article
Chromosomal localization of aromatic alcohol dehydrogenase fast-migrating isoenzyme Aadh1F (CAD1-F) gene in Triticum aestivum L. bread wheat
Differences in isoenzyme pattern of aromatic alcohol dehydrogenase, NADP-AADH or CAD, were found in the Triticum aestivum L. winter bread wheat cultivars by the method of electrophoresis in the starch gel. A stan...
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Article
Trifluoroacetate complexes of 3d elements: Specific features of syntheses and structures
Data on the syntheses and structures of trifluoroacetates of 3d elements mainly based on our results are reviewed. Specific features of the coordination chemistry of mono-, oligo-, and polynuclear trifluoroacetat...
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Article
Photopolymerization kinetics of a thiol–enol composition determined via recording/playback of a transmission holographic diffraction grating
The kinetics of thiol–enol photopolymerization of a hybrid composition based on a tetraacrylate monomer and a thiol-siloxane oligomer was studied with the use of a holographic recording of elementary transmiss...
