Mineralogical and geochemical heterogeneity of the Bazhenov suite

In this work, using one of the reference well the mineralogical and geochemical features of the Bazhenov suite of the Krasnoleninsky arch are considered. Based on the results of X-ray diffraction and X-ray fluorescence analysis, a number of mineral specific associations were established. This allows us clearlytodefine the order of the change in the chemistry of bassen expressing the change in oxidation-reduction and acid-alkaline sedimentation regimes

Features of the distribution of manganese in soils of the Prichulym taiga in Tomsk region during forest logging

In the course of the summer expedition, soil samples were taken from the upper, the most ‘active’ for migration and pollution by chemical elements, horizon in the taiga zone of Zyryanskiy district, Tomsk region. Soils were sampled in two plots: in a typical taiga forest and in the area after selective logging carried out six years ago. The selected soil samples were analyzed for the presence and total content of manganese. As a result of statistical data processing, the average value of the content of this element was obtained. Changes in the species composition of vegetation in the logged area could affect the redistribution of the considered chemical element in the soil. For a complete picture of the deposition and the reasons for possible migration of manganese in the upper layer of the soil horizon, the acid-base conditions and the organic component (humus) were additionally determined in the soil samples. The global indicators of the world’s soils – clarke values – were used as standards to compare with the average values of the manganese content in soil. The obtained average values of manganese in the upper horizon of soils in the studied areas were compared with respect to the data on the content of manganese in soils of the taiga forest zone of Eurasia. The southeast of Tomsk region is included in this zone. Based on the ecological and geochemical analysis, the reasons for the change in the content of manganese and the degree of its dangerous impact have been revealed. This characteristic made it possible to interpret the data obtained on the manganese content in the soil of the study areas, as well as to assess the state of the environment after anthropogenic transformation and other possible factors

Heterogeneity of the Tutleim formation (West Siberia)

Nowadays due to depletion of the west Siberian resource base, the research of unconventional reservoirs has become relevant. One of such objects is the Bazhenov formation and its analogues. In this paper, according to the results of the complex petrographic and geochemical studies, the nature of heterogeneity of the Tutleim formation was clarified. It was specified that investigated fragment of the section has two main lithotypes with clear mineralogical features. The alternation of the lithotypes in the section indicates cyclical deposition of sediments. This information and the results of XRF analysis have made it possible to divide section in details and distinguish four stages of development of the Tutleim formation. Each of these stages has certain physical and chemical parameters

Transcriptomic Studies in Non-Model Plants: Case of Pisum sativum L. and Medicago lupulina L.

Transcriptomics is a dynamically developing branch of biology highly important for geneticists and molecular ecologists alike. A large number of studies concerning differential gene expression, mapping of genes and quantitative trait loci (QTL), analysis of genotyping variations and so on has been conducted recently on several non‐model plants using next‐generation sequencing techniques. One example of non‐model legumes is garden pea (Pisum sativum L.), a valuable pulse crop capable of forming nitrogen‐fixing nodules and arbuscular mycorrhiza. Adaptation of standardised RNA‐seq approaches and data analysis developed for model plants to P. sativum should facilitate both studying of pea molecular genetics and breeding of new cultivars possessing agriculturally important traits. Another non‐model legume is black medick Medicago lupulina L. (a close relative of model legume plant barrel medick, Medicago truncatula Gaertn.), for which unique genetic lines almost obligatory dependent on arbuscular mycorrhiza symbiosis formation have been obtained. Such lines show promise as the perfect model for studying the genetic bases of arbuscular mycorrhiza development. In this chapter, we give a brief description of the current developments in the field of garden pea and black medick transcriptomics. Our aim is to provide a quick start guide to the non‐expert researchers for next‐generation sequencing (NGS)‐based transcriptome analysis

GOST 34.11-2018 Analysis in The Context of Zero-Knowledge Proofs

Zero-knowledge proofs are being increasingly applied to a wide range of tasks in modern distributed information systems. Of particular interest are such areas of activity as digital asset management systems, anonymous electronic voting systems, and anonymous credentials. Nevertheless, within the framework of the desire of Russian developers to localize the developed products, there is a question of compliance of the used algorithms with the legislative framework of the Russian Federation, which obliges developers to use local cryptographic standards. As our analysis shows, insufficient attention has been paid in the literature to the applicability of these standards to the scenario of use in zero-knowledge proof systems. In particular, the complexity of proof generation, parameters of arithmetic schemes are not analyzed, there is no comparison of computational complexity and cryptographic properties with foreign alternatives. In this paper we consider in detail the peculiarities of implementation of the arithmetic scheme for the function of GOST 34.11-2018 in the most widespread language for arithmetic circuit programming Circom. The developed program code is open and available for use and modification. The characteristics of the scheme, compilation and generation times are analyzed. The obtained results were compared with other popular hash functions: the cryptographic hash function SHA256 included in the standard language library, and the hash function Poseidon, specialized and optimized for use in zero-knowledge proof systems. The results show that while the use of the Russian hash function is possible, it is not desirable in applications that do not require the use of local cryptographic standards, due to the greater time complexity of witness generation and consequently proof generation. Recommendations on usage scenarios are given and further research directions are suggested