Home – Home – Jornals – Journal of Applied Mechanics and Technical Physics 2021 number 3

The effect of restrictions caused by COVID-19 pandemic in Novosibirsk in spring 2020 on the composition of trace atmospheric gases and organic aerosol in the air of Novosibirsk Akademgorodok is investigated. The concentrations of aldehydes (formaldehyde, acetaldehyde, benzaldehyde, acrolein, and substituted aromatic aldehydes), the corresponding carboxylic acids, and peroxy compounds were studied before and after adoption of restrictions, prior to the start of vegetation period, that is, with the minimal emission of biogenic compounds into the atmosphere. Differences in diurnal variations and the composition of hydroperoxides are revealed at the background of weakening of anthropogenic sources. The role of hydroperoxides in gas-to-particle conversion is shown. In parallel, the concentrations of nanometer-sized aerosol particles were measured, and differences in their chemical composition are analyzed. To explain the observed changes in the composition of organic aerosol, numerical simulation of the stages leading to the formation of condensable products was carried out. A sharp decrease in the strength of anthropogenic sources allowed us to reveal and characterize the contribution from biogenic sources into the formation of organic atmospheric aerosol and to describe this process.

Empirical model of the saltating aleurite and sand particle size distribution has been developed based on the measurements of the number differential concentration in the size range from 30 to 330 mm using size distribution approximation by sum of two lognormal distributions. Approximations of the vertical profiles of distribution parameters have been derived for the layer from 0 to 15 cm. Vertical profiles of the modal size of the large particle in the saltation layer from 3 to 15 cm and in the surface air layer from 0.125 to 16 m are compared with measurements in the Aral region.

The adsorption and photosorption properties of aerosol particles from zircon (ZrSiO₄) have been studied under conditions similar to tropospheric. For the aerosol, the physicochemical characteristics were determined by diffuse reflection spectroscopy. The analysis of the composition of the adsorbed layer formed in the troposphere is carried out. In the dark, mainly carbon dioxide is desorbed from the surface of zircon microparticles, as when illuminating the surface of aerosol particles. The kinetic dependences of СО₂ desorption and О₂ adsorption in the dark and under illumination are studied. The quantum yields and spectral dependences of the quantum yields of photodesorption and photoadsorption are determined. The spectral dependences of the effective quantum yield confirm the photochemical activity of the deposited aerosol from zircon under solar irradiation (l > 300 nm).

The analysis of road (street) dust is carried out by the kappametry method for the territory Mezhdurechensk city, Kemerovo oblast, which influenced by coal mining enterprises. Magnetic susceptibility of different dust fractions is determined. The mineral composition of the dust is studied. The magnetic susceptibility in soils are determined for comparison. The results correlate with the contents of chemical elements in the natural components of the territory under study. The elements - indicators of the territory pollution are determined.

Results of experimental studies of the common factors of evaporation of a single drop and a cluster of liquid drops are presented. New method for determining the evaporation rate of a single drop at radiant flux heating of a given intensity is suggested. The effect of radiant and convective flux heating on the evaporation dynamics of a single motionless drop is analyzed. The effect of absorption coefficient of the liquid on the evaporation rate of the single drop at radiant heating is found. A new method and experimental setup are developed for studying the evaporation dynamics of a cluster of monodisperse liquid drops during their gravitational settling in a high-temperature gaseous medium. Specific features of the evaporation of clusters moving in a high-temperature gaseous medium are studied. It is shown that the evaporation rate of a cluster depends on number and initial concentration of drops in it.

The friction velocity (dynamic velocity) u _* enters into nearly all computational schemes used for forecasting the state of the atmosphere. To find this velocity, it is necessary to know the mixed moments of turbulent components of the wind vector. However, the information about turbulence is lacking at the initial stage of forecast. That is why model equations are usually used for u _*. These equations are based on the relation of the friction velocity to the horizontal wind velocity V_h . In this work, we considers the empirical relations u _*( V_h ) for various conditions (different time of the day, seasons, types of stratification, observation sites, and measurement altitudes). Initial experimental data used to derive these relations were obtained by ultrasonic meteorological stations operating in the surface air layer at different observation sites.

The friction velocity (dynamic velocity) u _* enters into nearly all computational schemes used for forecasting the state of the atmosphere. To find this velocity, it is necessary to know the mixed moments of turbulent components of the wind vector. However, the information about turbulence is lacking at the initial stage of forecast. That is why model equations are usually used for u _*. These equations are based on the relation of the friction velocity to the horizontal wind velocity V_h . In this work, we considers the empirical relations u _*( V_h ) for various conditions (different time of the day, seasons, types of stratification, observation sites, and measurement altitudes). Initial experimental data used to derive these relations were obtained by ultrasonic meteorological stations operating in the surface air layer at different observation sites.

Synoptic spatiotemporal variations with 3-60 day periods are studied based on the remote sensing data from the GLONASS GPS receiver network in 2012-2015. The main modes of synoptic variations are found empirical distributions of their amplitudes, phase velocities, and spatial scales are constructed. The seasonal dependences of these parameters are found. Using independent data from meteorological stations and ERA5 reanalysis, it is shown that variations in radio waves zenith troposphere delay, integral moisture content of the atmosphere, surface refractive index, and wind speed in the troposphere are determined by the same synoptic atmospheric processes. The most probable values of their wavelengths do not exceed 8000 km.

The results of the indication of the A (H3N2) influenza virus, strain A/HongKong/4801/2014 using a biosensor based on a silicon nanowire field-effect transistor are presented. In the experiment, specific and non-specific antibodies to this virus contained in blood serum were used. It is found that the influenza virus is electrically neutral at the “nanowire surface-suspension” phase interface; “antigen-antibody” mixtures BPL-H1 and B-BPL have an electrically negative charge at this interface.

The risks of propagation of pollutants from flare installations when flaring associated petroleum gas in the oil production area of the Tomsk region were analyzed on the basis of remote optical data from Sentinel-2 and lidar data from CALIPSO. The horizontal fields of dispersion of pollutants over flare installations of the following fields are given: Pervomayskoye, Olenye, Stolbovoe, Katylginskoe, Lomovoe, Zapadno-Katylginskoe, and Luginetskoe. The areas of vegetation cover located in the zones of dispersion of pollutants from the flares are calculated. The vertical profiles of the propagation of impurities are given according to the CALIOP lidar data, reflecting aerosol pollution of the atmosphere in the area of flare installations of the fields considered in this work.

The state of the vegetation cover of hydrocarbon deposits of the Parabelsky district of the Tomsk region: Gerasimovskoe, Kazanskoe, Kalinovoe, Mirnoe, Nizhne-Tabaganskoe, and Urmanskoe is studied. The average values of EVI (Enhanced Vegetation Index) are calculated for the areas under study on the basis of Terra/MODIS satellite data with the use of the ArcGis geographic information system. The state of the vegetation cover is examined for the early growing season, from May 25 to June 25, over the past ten years (2011-2020). Positive trends toward an increase in the EVI values in 2020 are found for all the territories under study, which indicate the revegetation process and improvement of the ecological situation.

Sedimentation of pollen particles of four species of anemophilic plants (white poplar, hybrid willow, tolocanocular poplar, and Chinese miscanthus) growing in CSBS SB RAS is studied. These species are widely used in landscaping cities of the Novosibirsk region and are producers of impressive amounts of allergenic pollen, which can be carried by the wind over significant distances. The presence of a significant proportion of clusters which include two or more pollen grains is shown. Sedimentation rates are determined for individual pollen grains of these plant species and their clusters of two to six pollen grains. Dependence of the cluster sedimentation rate on the number of pollen grains in a cluster is derived.

Solutions of one-dimensional equations of gas dynamics and the equations describing the behavior of a nonlinear elastic material are reduced to solving a system of homogeneous differential equations written in Riemann invariants. It is shown that the solution of the Cauchy problem for such a system allowing for a differential constraint is reduced to solving a system of ordinary differential equations. Examples of solutions for certain initial data are given.

Complete group analysis of the system of one-dimensional unsteady equations of the dynamics of a vibrationally excited gas is performed in the case of cylindrical and spherical symmetry. It is shown that the admitted Lie algebra does not contain the scaling generator of independent variables that defines the well-known self-similar solutions of strong shock wave problems for the similar system of the gas dynamics equations of an ideal gas. A modification of the characteristic relaxation time is proposed, which makes it possible to extend the admitted Lie algebra of the system by the generator of simultaneous scaling of independent variables and introduce a class of self-similar solutions. Using the problem of a strong linear explosion as an example, it is shown that the solution of the modified system of equations is physically consistent and fairly accurately describes the well-known effect of the divergence of static and vibrational temperatures behind the wave front.

The paper justifies and describes the paradigms that organize hypotheses, theories and models of organizational growth into groups and determines the fundamental principles, avenues and methodology of organizational growth studies. The methodological framework includes Kuhn’s concept of paradigm with Lakatos’s Methodology of Scientific Research Programmes that allows identifying the methodological core of growth paradigms. Theoretical generalizations underlying the research are presented as organizational growth concepts and combined into three paradigms on the basis of the theoretical and methodological principles of each paradigms and make up the core of each of them. Through this, the author justifies the causal paradigm that views an organization as a deterministic and mechanistic system focused on establishing development regularities that describe one-to-one causal relationships between the elements and subsystems of a company, and emphasizes two paradigms founded on the ideas about an organization as an organic system capable of developing itself and increasing its complexity. The first of the two paradigms is the growth outcome paradigm, the theories and models of which deal with organizational growth as a natural process, similar to growth and evolution of biological organisms (ontogenesis). At that, the primary research objective within this paradigm is to identify innovations typical of each new stage of a company’s life cycle and to create favorable conditions for their introduction. The other paradigm is the process paradigm that asks how growth affects organizational structure and internal processes.

The article analyzes and criticizes a vicious practice of the economists who attribute the ideas to the eminent economists who didn’t elaborate those ideas. The practice existed in the 19th and 20th centuries. It does exist today. It has done a huge damage to the development of economic theory and certain and specific economic sciences. Especially in the last century Keynesianism was at the receiving end since it clearly defined the watershed between the obsolete but die-hard «laissez-faire» economic theory - «invisible hand of the market», free competition and government management of the economy. In this regard the economic theory constantly faces the question of certain «Keynesianism crisis», allegedly indicative of obsolescence of Keynesianism as economic theory. The article on the contrary proves that «Keynesianism crisis» is far-fetched and of ideological nature. Keynesianism itself is relevant today, more than ever, especially in the conditions of Russia, where, according to invincible belief of the author, state-directed market economy named state capitalism is being formed slowly and surely.

The authors consider public-private partnership as one of the mechanisms allowing the transformation of the territorial infrastructure and analyze the problems and new solutions for its development. The article reveals the specific tasks and forms of public-private partnership and the main directions of its development. The article identifies the main factors that have a positive effect on the development of regional infrastructure in the format of public-private partnership and the principles of the emergence of such partnership. The study of the foreign practice of the alliance of business and the government made it possible to formulate problems that hinder the development of public-private partnership in our country. This development could facilitate the adoption of a set of measures to ensure the interests of the state and society, as well as the interests of entrepreneurs as subjects of public-private partnership. The authors used general scientific cognition methods and generalization techniques in the process of the research. The results of the research can be used as recommendations for the development of the regional economy in the framework of public-private partnership projects.

The main stages of creative career of professor of Saint Petersburg State University Valery Viktorovich Kovalev (1948-2020), who restored the national school of accounting study which treated the balance sheet as a financial model of the company, are shown. The paper characterizes the specifics of the Soviet school of analysis of economic activities of enterprises formed by the start of Perestroika in the USSR. The scope of the methodological tasks placed before accountant theorists by new business environment in the conditions of the development of post-Soviet economy in Russia is shown. The paper reveals the methodological basis of the methods, suggested by V.V. Kovalev, of analysis of accounting reporting of legally independent business entity in the conditions of market economy, as synthesis of the developments of national accountants of the early 20th century and conceptual framework of English-American school of corporate finance of the late 20th century. The relation of the content of the works by Kovalev to the provisions made by A.P. Rudanovsky (1863-1931) is characterized. The paper presents the influence of several personal qualities of professor Kovalev as a researcher on the development of his ideas ranging from the set of indicators of dynamic analysis of accounting reporting to a new national school of financial management which united the concepts of the Continental European and English-American accounting traditions for the first time. The paper characterizes educational activities of V.V. Kovalev in the 1990s and reveals the content of his works regarding the history of financial science. The success of Kovalev as a propagandist of accounting as science is explained.

The process of digitalization of the economy is accelerated by the development of the legislative framework. The author of the article analyzes the short stories of regulatory legal acts regulating the emission and circulation of digital financial assets and digital money in the Russian Federation, identifies various types of digital money and determines their specificity, as well as analyzes the accumulated law enforcement practice of digital currency circulation. It is concluded that digital money has not only a commodity, but also a credit, legal and informational nature.

To survive in modern market conditions, as well as to participate in the ever-increasing competitive struggle, companies need to conduct their activities more effectively, which means that they constantly need to make a variety of decisions, which in turn entails the need to constantly give a real assessment of the effectiveness of the decisions and projects being implemented, competently conduct economic analysis, find reserves for this activity. This is where the relevance of the development of the basic methodological principles of economic analysis in the conditions of risk and uncertainty in an industry based on scientific basis taking into account the specific characteristics of the sector in question. The subject of this study is a set of both theoretical and practical aspects of analyzing the activities of petrochemical companies under conditions of risk and uncertainty, while the object of the study is Russian and foreign petrochemical and gas processing companies operating in the current conditions of the industry development. The purpose of this study is to formulate a methodology for analyzing the main indicators of the activities of petrochemical and gas processing companies and making decisions under conditions of risk and uncertainty. The development of methodological principles is supposed to be carried out on the basis of the classical scientific and methodological base, taking into account the industry specific features of the activities of petrochemical and gas processing companies. In this paper, a study of modern methods of analyzing the effectiveness of activities is carried out, and the novelty of this work consists in combining the classical theory of economic analysis with the practical methods used today by petrochemical and gas producing companies in the process of their financial and economic activities.

Planning of receipts and payments is an important element in the work of a higher education institution. The documentary basis of the research is based on domestic methods and documents for justifying planned revenues and expenditures, which are typical for the socialist economic system, the market economy of estimated and normative per capita financing. Separate indicators of General and financial and economic characteristics of financing justifications are systematized in the form of tables. The assessment of changes by group is used to determine the direction of development of the financing justification.

The purpose is to determine the state of the ruble exchange rate, to identify the main factors affecting changes in the Russian ruble exchange rate in modern conditions. The opinions of domestic authors on the factors affecting the ruble exchange rate (balance of payments, inflation, oil price, coronavirus pandemic, unemployment) are considered. Among the most significant factors affecting the ruble exchange rate is the price of oil. The article studies the dynamics of the impact on the national currency rate of oil prices. Conclusions are made.

The aim of the study is to assess the levels of specialization of aspiring women entrepreneurs in various types of economic activities in modern countries. The study was based on data from a survey of women entrepreneurs in the Global Entrepreneurship Monitoring Process for 59 countries in 2018. Economic and mathematical models describing the specialization of entrepreneurs in five main groups of activities have been developed. The distribution of their values of indicators by country is considered. The countries with the maximum and minimum values of indicators are defined. A comparative analysis of indicators for Russia and foreign countries is presented.

The article deals with the problems, current state and dynamics of the main indicators of the development of industrial and human resources potential of the North Caucasus Federal District. After analyzing the reasons for the decline in a number of indicators and the reasons that hinder the dynamic development of the macroregion, the authors note that the North Caucasus Federal District is currently the most unfavorable in terms of production and consumption. The macroregion, due to the Caucasian conflicts, remains unattractive for private investors. The main advantage of the North Caucasus Federal District: the best indicators of natural population growth in the country. According to forecasts, even if there is a migration outflow, the population in the district in 2030 will exceed the figures of 2010.

The subject of the research is spatially non-uniform innovative activity, carried out at the regional level (meso level) within the macroregion of the South of the USA, analyzed and assessed on the basis of the qualitative measures (indicators and integrated index) of the level of innovative capacity and innovative activity of the regional innovative systems which gained development and statistical accounting of the results of the stated activity within specific states. The identified combinations, high correlation dependence and interconnection of indicators of innovative potential and innovative activity of regional innovation systems of the states of the South of the USA, made it possible to substantiate a number of trends in the development of these systems, to assess the peculiarities of spatial integration and, at the same time, the different-level differentiation of these systems, reflecting heterogeneity and unevenness. development of innovation activity on the «center-peripheral» type. The final typology of regional innovation systems of the states of the South of the USA, based on the logarithmically normal distribution of the indices of innovation activity and the integral indicator of the level of innovative potential of the average values for the period 2015-2019, results in a qualitative spatial diversity of these systems, determined by the joint influence of both economic phenomena on the deepening heterogeneity and differentiation of the latter.

The article provides with different approaches to the assessment of pharmaceutical manufacturers’ innovation activity. The peculiarities of pharmaceutical industry product that can be characterized as innovative are taken into consideration. Special attention has been given to the pharmaceutical industry peculiarities originating from differentiation of original drug products and generics in the structure of pharmaceutical industry production. Based on these findings the classification of Russian pharmaceutical manufacturers in accordance with their innovation activity extent evaluated by their activity in clinical trials conducting was developed. The classification is based upon k-means clustering algorithm with 5 clusters specified. The small amount of manufacturers involved in clinical trials conducting and some optimistic insights about the original products share were concluded hereafter.

This article analyzes the current state of affairs of the Eurasian Economic Union. The EAEU is viewed as a form of integration determined by time and conditions, aimed at strengthening the regional development of the participating countries. The relevance of the article is due to the fact that in the modern world, regional integration of neighbors in economic, political and other aspects is necessary to maintain a high level of competitiveness in the international arena. The article examines the developing and already formed supranational institutions of the union. The article also examines the economic aspect that is the dynamics of changes in GDP and the growth rate of investments in fixed assets of the EAEU member states. Here are given assessments in the field of changes in these indicators. In the context of the prospects for the development of the EAEU, several options and types of regional integration were proposed. Or rather, the prospects for the development of the EAEU were outlined through strengthening the existing form of integration and through expanding integration by involving other countries of the Eurasian space in this process. The conclusion made through the analysis obtained in assessing the dynamics of economic indicators confirmed the need to deepen the further integration of the EAEU. In the process of analyzing, the following research methods were used: systems approach, structured approach, integration approach, normative approach.

The possibility and expediency of introducing modern technologies in transport in the urban environment are considered. The prerequisites and conditions for the development of unmanned vehicles are studied. Statistical data are analyzed to assess the economic conditions of road transport operation. A sociological survey was carried out that reveals the attitude of the population to the introduction and development of intelligent technologies in transport, as well as the factors that influence them. Based on the results of the survey, proposals were modeled to overcome the factors and risks that hinder the development of unmanned vehicles.

Agriculture in Kazakhstan can be described as the main resource, but it is far from being fully used. One of the priorities of agro-industrial complex of the Republic is the development of processing of agricultural products. This is confirmed by the implementation of the objectives of the State program on the development of agro-industrial complex of the Republic of Kazakhstan for 2017-2021. The article gives a picture of the development of agricultural production in Kazakhstan, explores the current state and problems of the agricultural sector of the republic in the context of the financial crisis, including in the Aktobe region.

The process of introducing innovations into the activities of various economic structures with the use of information and communication technologies is considered. The characteristic features of the term «innovation» are studied on the basis of the analysis of different author’s approaches. The main functions and components of subsystems of innovative activity are revealed. The main problems of introducing innovations in information and communication systems associated with the low level of state support and the weak development of already known technologies are highlighted. The main directions of development and improvement of information and communication technologies in Russia are presented.

The article is devoted to the formation of the concept of techno-digital security. The need for methodological justification of this concept is due to the discourse of modern social reality, experiencing a qualitative transition to a new, digital stage in the development of human civilization. This work justifies the feasibility of including techno-digital security in the National Security Strategy of the Russian Federation. The authors presented practical recommendations for ensuring techno-digital security at the initial stage of its implementation with the aim of further developing an appropriate long-term strategy.

The article analyzes the results of five studies carried out in the Novosibirsk region for the purpose of research of the possibilities of the switch to self-employment of unoccupied population that apply to employment service regarding provision of employment. The paper studies the dynamics of the main social indicators favoring the choice of self-employment and varying under the influence of this choice: hope and trust in the state regarding provision of employment status, periodicity in loss of work, recession of income level and capability of providing oneself and family; influence of the reference groups on the choice of self-employment (their success); assessment of labor as social value; social feeling of unoccupied people and family support. Several trends were revealed: faith in the state as the guarantor of full employment provision weakened significantly; civil activity regarding securing self-sufficiency increased; the share of the people who lost work for the first time is reducing and the number of unemployed who lost work two or more times is increasing; the number of the people who have to save on the most needed and who are not in difficulties for money is decreasing; the number of the people who feel pity for unemployed people regarding their unemployment is decreasing and the number of indifferent people is increasing; family support grows. A conclusion was drawn regarding the possibility of employment of unemployed people via the development of self-employment, necessity of provision of assistance and support to them on the part of the state; it will allow people to overcome a welfare mentality and discover their own business development strategy.

The article considers essential specifics of the «tax management» category at the modern stage of its development in Russia. A retrospective approach explaining the nature of definition of the presented term is suggested. The conducted research makes it possible to draw a conclusion that today tax management is being transformed into a separate field of knowledge, substantially detached from financial management. The paper presents the authorial interpretation of tax management specifying its functional orientation.

The paper presents data from a population-based study of a rare plant species Hedysarum grandiflorum Pall. in the Volgograd region on the basis of the study of 2012-2017 on the territory of the Cretaceous outcrops of the Middle Don. The habitat of the species was characterized, ontogenesis, age composition of coenopopulations, and abundance are determined. It has been established that different communities of coenopopulations of a given species are characterized by similar indices of abundance, density, and level of generativeness. Different levels of vitality of individuals in these coenopopulations are due to interspecific competition and the degree of anthropogenic load. Due to the peculiarities of the ontomorphogenesis and life strategy of H. grandiflorum, these factors lead to a decrease in the bank of seeds and seedlings. A low level of self-maintenance of cenopopulations and the death of individuals due to mechanical damage lead to the loss of a rare species from steppe phytocenoses.

We studied the flowering biology of perfect and staminate flowers, the sequence of flowers blooming in umbellets and umbels in Chaerophyllum aromaticum L., a biennial or perennial taproot polycarpous herb. Our observations used generally accepted methods for studying flowering biology in the Moscow region in 2017-2019. The flowering sequence of umbels in C. aromaticum synflorescence corresponds to the “Chaerophyllum prescottii” blooming model described in the literature. According to this model, the stigma phase of flowers on shoots of the same order coincides with the staminate phase of flowers on shoots of the next order. So, the geitonogamy does not exclude between flowers of umbels on shoots of different orders. The perfect flowers are strongly protandrous, their anthers mature and are exposed much earlier than their stigmas. So, in perfect flowers, the possibility of transferring their own pollen to the stigmas (and therefore also autogamy) is completely excluded. In perfect flowers, the stigma phase is longer than the staminate one: the first lasts 2-3 days, while the second lasts only 1 day. The lifespan of perfect flowers - from opening the anthers of the stamens to the end of the stigma phase - is 5-7 days, and 1 day for staminate flowers. The lifespan of C. aromaticum flowers directly depends on their sexual form and location in synflorescence. The lifespan of perfect flowers decreases in the direction from the peripheral umbellets to the inner ones within the umbels, with an increase in the branching order of the shoot. Each umbellet and umbel goes through three phases consecutively: staminate, simultaneous functioning of male and female generative structures, and stigma. Thus, these phases are not clearly demarcated in time, and it does not completely exclude geitonogamous pollination within umbellets and umbels on shoots of the same order. The perfect and staminate flowers of C. aromaticum are characterized by a morning opening rhythm with a maximum at 9 am.

The studies were carried out as part of the “Flora of Uzbekistan” project. When conducting a critical audit of the species of the families Heliotropiaceae and Boraginaceae for the next volume “Flora of Uzbekistan”, the Herbarium collections of LE, MW, TASH, AA, TAD, NS, NSK, ТK, P were studied. As a result of these studies, two genera Borago L. and Eritrichium Schrad. ex Gaudin, and 11 species, new to the flora of Uzbekistan: Borago officinalis L., Echium maculatum L., Eritrichium pseudostrictum Popov, Lappula duplicicarpa Pavlov, L. fruticulosa Ovczinnikova, L. mogoltavica Popov ex Czuk., L. tianschanica Popov ex Zakirov, Myosotis asiatica (Vestergr.) Schischk. et Serg., M. krylovii Serg., M. sparsiflora J.C. Mikan ex Pohl., Rochelia claviculata Popov et Zakirov, for previously identified species Lappula barbata (Bieb.) Guerke, L. caspia (Fisch. et C.A. Mey.) Popov ex Dobrocz., L. kulikalonica Zakirov, Lepechiniella arassanica (B. Fedtsch.) Popov, Myosotis imitata Serg., Rindera echinata Regel localities are cited for the first time are given. The annotated list of genera and species is given in alphabetical order. For each species, a link is given to the first description and the main publications on the flora of Uzbekistan, the original label of new locations is cited with an indication of the area and a link to the storage location, information on ecological features and general distribution is given, diagnostic signs are discussed, information on type samples is cited. The lectotypes of the names Lappula barbata and Lepechiniella arassanica, the neotype of the name Lappula caspia, are designated. For all taxa maps of distribution on the territory of Uzbekistan are given.

As a result of studies of the flora of the Novosibirsk Region two new species were found - Orobanche uralenses G. Beck. and Veronica pinnata L. s.l. New localities discovered for 23 rare species were detected: Alchemilla hebescens Juz., Allium schoenoprasum L., Allium vodopjanovae N. Friesen, Astragalus buchtormensis Pall., Bassia prostrata (L.) A.J. Scott s.l., Cleistogenes squarrosa (Trin.) Keng., Ephedra distachya L., Gypsophila patrinii Ser., Hedysarum gmelinii Ledeb., Hemerocallis minor Mill., Hierochloe glabra Trin., Hippophae rhamnoides L., Hypericum elegans Steph. ex Willd., Krascheninnikovia ceratoides (L.) Guldenst., Melica altissima L., Neottia nidus-avis (L.) Rich., Nepeta nuda L., Orobanche krylowii G. Beck, Otites baschkirorum (Janisch.) Holub., Pilosella katunensis Tupitz., Polygala sibirica L., Stachys sylvatica L., Vincetoxicum sibiricum (L.) Decne. New localities are given for 7 adventive species that were known limited number of points: Acinos arvensis (Lam.) Dandy, Arenaria uralensis Pall. ex Spreng., Astragalus cicer L., Lathyrus sylvestris L., Rudbeckia hirta L., Syringa josikae Jacq. ex Rchb., Ulmus laevis Pall. For Iskitimsky and Cherepanovsky districts 38 species are given that were not previously indicated in them.

Trapa natans L. s.l. is a relict species characterized by a cosmopolitan disjunctive range. The number of its populations is reducing throughout the range, and therefore it is included in many regional Red Books of the constituent entities of the Russian Federation. At the same time, there are fragments of the range where the species is invasive. The first reliable data on the distribution of the species in the territory of Altai accounted for the first third of the XIX century. Until the beginning of the XX century, only six water caltrop localities were known in the region, however, now 32 sites have already been found. In order to reconstruct the picture of the water caltrop distribution in the Altai Territory, herbarium collections and literary sources, photo materials and own fees were used. We compiled a map of the T. natans distribution in Altai krai, which reflects the historical data as well as the present new sites for the species discovered by the authors.

As a result of long-term expeditionary studies of the poorly studied flora of the Baunt Basin (Northern Transbaikalia) 27 locations of 15 species of rare and located on the border of the range of plants were identified. New habitats of plants of the Red Book of Buryatia were found (three habitats of Allium altaicum and Caragana jubata, two Cypripedium macranthos and one Gastrolychnis popovii). Finding new populations of species listed in the Red Book is necessary for the effective protection measures. Thanks to the findings of species located at the border of their distribution (on the north Adenonema cherleriae, Hemerocallis minor, Ligularia fischeri, Melica turczaninowiana, Rheum rhabarbarum, Saussurea baicalensis, Veronica linarifolia on the north-west - Artemisia freyniana; on the east - Spirea alpina, on the south-east - Dryas sumneviczii, on the south - Gypsophylla sambukii) the understanding of the range structure of these species has been expanded. 6 species (Anemonastrum crinitum, Artemisia freyniana, Artemisia macilenta, Cuscuta europaea, Saussurea baicalensis, Viola variegata) were recorded for the first time in the surveyed area. It should be noted that most of the found species tend to specific habitats in the study area - these are outcrops of limestone rocks, steep rocky slopes of southern exposures, basalt stony placers, which, against the background of the dominance of cryophytic Daurian larch forests, gives specific features to this flora.

The article is dedicated to the memory of the famous researcher of the flora of Central Asia, taxonomist, botanical geographer, specialist in raw essential oil plants Serafim Nikolaevich Kudryashev. A brief analysis of his works and the main publications are given.