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The aim of the work is to determine the concentration of heavy metals migration Zn, Cd, Pb, Cu and Hg in bidistillated water (bidistillate) from cardboard and paper samples of school notebooks of different manufacturers. The amount of Zn, Cd, Pb, Cu and Hg migrating into bidistilled water from cardboard and paper samples of school notebooks was determined by the method of stripping voltammetry. It is detected that Zn, Pb and Cu migrate from 12 studied samples to bidistilled water, while Cd migrates from 5 samples, and Hg – from ten samples of cardboard and paper of school notebooks. The maximum permissible migration concentrations of Zn, Cd, Pb, Hg, according to TR CU 007/2011, are not exceeded in any studied sample of cardboard and paper school notebooks. The largest total migration of heavy metals was 215.6 mg/kg or 0.379 μg from 1 sheet, and the smallest – 24.54 mg/kg or 0.177 μg from 1 sheet of the cardboard cover of the notebook.

Lipoedema is a chronic progressive disorder of adipose tissue leading to an enlargement of lower extremities. It is considered to be rare; however, the prevalence of the disease is underestimated because it is commonly misdiagnosed as obesity or lymphedema and the general awareness is poor. The etiology of the disorder is considered to be multifarious, including genetic inheritance, hormonal imbalance and microcirculation alterations. Diagnosis is mainly based on medical history and physical examination. Management of lipoedema is focused on reducing the symptoms, improving the quality of life and preventing further progression of the disease. The aim of this paper is to raise the awareness of the disease and provide appropriate clinical guidance for the assessment of lipoedema. We searched through the PubMed/MEDLINE database and took into consideration all of the results available as of 6September, 2020 and outlined the current evidence regarding lipoedema epidemiology, etiology, clinical presentation, differential diagnosis, and management. Better understanding of lipoedema is crucial for establishing an early diagnosis and a proper treatment, which in turn will reduce the psychological and physical implications associated with the disease.

The review analyzes the collected materials from the 12th International Scientific Conference “Current Problems of Parliamentarism: History and Modernity (Tauride Readings 2018).” Most of the collected scientific papers cover various aspects of the activities of the State Duma of the Russian Empire. The review considers the key articles of the collection and notes the significance of the published materials of the conference discussion platforms. It is concluded that the collection of articles under review is of great relevance for studying history, theory and practice of the Russian parliamentary system.

A visual test method has been proposed for the evaluation of the gold content. It is based on the linear dependence between the length of the colored zone on an indicator paper and gold(III) concentration. Indicator paper was covered by a polymer film and was in contact with the solution tested along one edge during analysis. It was impregnated by 3-phenyl-2,6-dimercapto-1,4-thiopyrone or by precipitate of its complex with copper(II). Besides Cu(II) can be replaced by the Au(III) ion tested in the composition of this complex. The concentration ranges for Au(III) determination were equal to 0.02−2 mg·L−1 or 4−590 mg·L−1, respectively, in the presence of excess of the transition and noble metals. It was demonstrated the effectiveness of the dynamic preconcentration of Au(III) for the subsequent colorimetric determination on paper filter for the concentration range 0.005–0.3 mg·L−1 (DL 0.02 mg·L−1) by using a sample volume of 10 mL. The developed procedures were successfully utilized for the determination of gold in synthetic mixtures, in auriferous quartz (RSD < 5%), and in ore from Zyryanovsk’s mine (Kazakhstan) with RSD < 8%.

Introduction. An important problem in power transformers resource prognosis is the formation of moisture dynamics trends of transformer insulation. Purpose. Increasing the accuracy of power transformer insulation resource assessment based on accounting of moisture dynamics in interrelation with temperature dynamics. Working out of moisture dynamics model in paper insulation-transformer oil system in conjunction with thermodynamic model, load model and technical maintenance model. Methodology. The mathematical models used for describe the moisture dynamics are grounded on nonlinear differential equations. Interrelation moisture dynamics model with thermodynamic, load and technical maintenance models described by UML model. For confirming the adequacy of model used computer simulation. Results. We have implemented the model of moisture dynamics in power transformers insulation in interrelation with other models, which describe the state of power transformer in operation. The proposed model allows us to form detailed trends of moisture dynamics in power transformers insulation basing on monitoring data or power transformers operational factors simulation results. We have performed computer simulation of moisture exchange processes and calculation of transformer insulation resource for different moisture trends. Originality. The offered model takes into account moisture dynamics in power transformers insulation under the influence of changes of the power transformers thermal mode and operational factors. Practical value. The offered model can be used in power transformers monitoring systems for automation of resource assessment of oil-immersed power transformers paper insulation at different phase of lifecycle. Model also can be used for assessment of projected economic efficiency of power transformers exploitation in projected operating conditions.

Annotation: In the article the paper of three copies of Krakow editions of Polish Herbal 1595 by Marcin of Urzędów, from Lazar printing house is analyzed. In the copies of the edition seven different types of paper were found. This paper was produced by six paper-mills nearby Krakow, and it is typical for Krakow paper market of that time. Paginal location of watermarks, their quantitative and percent composition are defined. Also the exploration includes leaves of one of the copies In 74, restored in 19th century. Instead of missed leaves the paper of the first part of 16th , 17th and 18th century was used to complete the copy.

Examination covered 245 individuals and included characteristics of endocrine state of pulp and paper plant workers over 2011-2012, in comparison with data from 1990, as well as comparison with reference groups of male workers with no contact with chemical'industry in Arkhangelsk. Findings are both in main and reference groups general decrease in levels of cortisol, thyroxin;progesterone, testosterone, insulin, somatotropin and increased serum level of estradiol. With that, inside both groups, reliable tendencies to increased levels of cortisol, thyroxin, insulin, SSH and lower concentration of progesterone in the pulp and paper plant workers vs. the reference group members. Positive tendency was absence of abnormal concentrations of insulin, SSH and lower frequency of high cortisol levels in the pulp and paper plant workers nowadays.

The author of the article assumes that the interstate relations between Russia and Great Britain in the late 18th — early 19th centuries largely determined the area of private contacts between Russians and the British. English-Russian marriages have a special place in the history of English-Russian relations. Attention is paid to one of such unions — the marriage of the outstanding statesman M. M. Speransky with an Englishwoman Elizabeth Stephens. It is claimed that a significant role in Speransky’s fate was played by A. A. Samborsky, also married to an Englishwoman, in whose house Speransky’s fateful meeting with his future wife took place. It is reported that the Speransky Fund of the Russian national library preserved letters of Elizabeth Stephens to Speransky, previously not widely attracted by researchers, but not all of these letters actually belong to Elizabeth, some of them belong to her sister — Marianne. This study provides the first translation of these letters for the analysis of Speransky’s private life. The author concludes that the preserved correspondence meets the standards and methods of expression of feelings in the era of “sentimentalism.” The problem of how much Speransky was immersed in the cultural context of British reality due to this marriage is also considered. Despite the fact that the marriage was quite short, Speransky’s relations with the Stephens family were quite strong.

The work is devoted to the publication of archival materials related to the poet and literary critic Georgy Adamovich (1892–1972) and not included in his Collected Works, the publication of which has begun not long ago. The published selection, which makes a certain contribution to the study of the poet’s heritage and literature of the Russian Diaspora, is called upon to present different aspects of Adamovich’s activity. The first block is devoted to his Masonic activity and includes one of the reports read by Adamovich at a meeting of Russian Masonic lodges in Paris, “The Secret of Pushkin”. The second part of the selection, demonstrating the diversity of Adamovich’s correspondence, is presented by a letter from the poet Alla Golovina concerning the last days of her brother Anatoly Shteiger, also the poet, probably the most prominent representative of the so-called “Paris note”. The letter is addressed to Adamovich as an ideologist of the indicated literary direction. As an example of materials for an unpublished volume of Adamovich’s Collected Works, his speech at the evening dedicated to Teffi (Nadezhda Aleksandrovna Lokhvitskaya-Buchinskaya, 1872 −1952) is selected. Materials are accompanied by an introductory note and publisher’s comments.

The second article concludes the cycle "Paper Architecture" and narrates about the criteria for projects belonging to the considered genre of creativity, highlights its most representative representatives of both domestic and foreign schools. The publication mainly deals with architectural concepts that interpret the anti-utopian moods of the society of the late twentieth century, the comments of the participants of the movement themselves and the evaluation of art critics. The author hypothesis of factorsled to numerous victories of Moscow architects on international conceptual competitions is offered

Introduction. The moral and physical deterioration of medium voltage power cables with phase and zone paper-impregnated insulation requires implementation of quality systems and reliable nondestructive electric diagnostic. Informative indicator of the insulation is the time decay curve of the charging current. It reflects the processes of accumulation of space charges (absorption). The measurements are carried out the 15th since the second direct voltage supply, then – on the 30th and the second on the 60th second. The ratio of the parameters measured in these times gives the dimensionless criteria – absorption coefficients. Three measurements are made at different times, provide a more complete picture of the state of insulation than the measurement of the value of steady leakage (conduction-through), adopted in conventional prevention trials. Purpose. Research and testing methods of diagnostics of power cables with paper-impregnated insulation by absorption and phase characteristics of the belt insulation based on the total measurements. Methodology. A procedure for determining the individual characteristics of phase and zone paper-impregnated insulation based realized on the use of the equivalent circuit of a three-core cable in the metal shell and solved of an over determined system of linear algebraic equations by least squares. Results. The proposed method allows determining the absorption characteristics of the individual phase and zone insulation medium voltage power cables in the overall metal shell at a direct voltage. Individual characteristics reflect the characteristics of cables and allow a greater degree to assess the degree of aging of each of the components of paper-impregnated insulation. Originality. Regardless of the cable connection diagrams probing electric field grabs as the phase, and zone insulation. The cumulative nature of the measurement leads to the fact that the differences in the properties of insulation components are smoothed: the aggregate results of the measurements do not differ for the different schemes of the same type. The individual characteristics of isolation, defined on the basis of the proposed method are more differences than total, indicating that non-symmetrical modes of operation of the cable. Practical value. The values of individual characteristics power cables 6 kV are 3 times more total, because of what their direct measurement may be a problem. The total resistance of several insulation spaces connected in parallel, behind the individual. Smaller values of insulation resistance are measured more easily, especially on short samples cables.

Recently, the concepts of "passive construction" and "sustainable architecture" have firmly entered our everyday life. With these concepts, we understood that in the "passive stable architecture" the building is designed to minimize not only the energy resources spent on its operation, but also the need for mechanical control of sound, light and heat. In addition, design automation processes in energy-efficient construction have become essential. And, if the design of building structures has long been accompanied by the use of modern calculation programs, then the design of insolation - an integral part of architecture and construction lighting engineering - does not have such powerful support in the form of calculation computer programs. In this work, we present our own developed design complex, which makes it possible to calculate the illumination of internal premises with energy-efficient lighting systems based on hollow tubular light guides. The settlement complex is unique, since it has no analogues in the world. He informatively illustrates the calculations made using a full 3D view of the illuminated room and a graphic image of the distribution of light energy over a given surface. The design complex is presented on the practical example of designing combined lighting in domestic premises of the pulp and paper mill of the Vologda region.

For the majority of Russian companies in recent years to become a reality the implementation of mixed paper and electronic document management with the constant increase in its electronic component and the emergence of new organizational and technological forms. The idea of mixed electronic and paper document is the basis of the conceptual approach of gradual expansion of the use of electronic documents. This fact is particularly important in view of what is now different organizations are at various stages of implementation and use of electronic document technologies. Furthermore, the use in the foreseeable future a mixed electronic and paper document allows to take into account the advantages and disadvantages of paper and electronic media.

The article analyses the global trends and prospects of development of pulp and paper industry. It assesses the directions of application of biotechnology in forestry and pulp and paper industry. The paper presents forecasts of growth and market development of products created using biotechnology. It identifies goals and objectives for the development of biotechnology pulp and paper industry in Russia.

The article describes the methodological aspects of conducting identification of research submitting paper mechanisms.

The methodological aspects of detecting and interpreting picture of traces leave details and nodes of systems submitting paper of modern printer devices are discussed.

Experimental studies of the dynamics of temperature, transmittance coefficient and forward scatter of radiation in the smoke under the ceiling space when burning paper where conducted. Behavior of main signs of fire at an early stage, common for the mentioned type of inflammables, was studied.

The paper deals with the precision control for the parameters of manufactured paper production, such as various kinds of paper and photo paper for printing. Research of untreated, matte, glossy and laminated paper is conducted by atomic force microscopy by means of educational and scientific scanning probe microscope NanoEducator LE in the framework of this paper. Visualization of characteristic structure for each type of studied paper was conducted, histogram of roughness was obtained, and average roughness of height differences was defined. A laminated paper has got the lowest roughness (Ra of about 70 nm) and glossy paper has got Ra of about 170 nm; roughness of untreated paper with cellulose fibers is about 530- 540 nm, and matte paper has got the highest roughness parameters (Ra about 670-680 nm). Scanning probe microscopy application for parameters monitoring of cellulosic paper production is shown to give the possibility of such microscopy type application in the production of paper products and high-precision control of its parameters.

It was found that the exposure to low-temperature gas discharge plasma at atmospheric pressure is an effective way of paper cleaning from fungal spores. This effect is explained by the specific mechanisms of micro-discharges excitation and maintaining that ensure efficient (up to 90 %) reduction in the number of viable mould spores without local heating biopolymeric materials.

In the optics of attention was the story of the Japanese writer Komatsu Sake "Paper or hair", written in 1963. According to the content, the loss of paper changed the usual way of life of people, becoming a source of existential fears. As we believe, the artistic narrative anticipates the events of our time associated with the spread of the coronavirus infection COVID-19. An artistic description of the situation by a Japanese writer, a phenomenological immersion in reality and theoretical reflections by M. Heidegger's work on the existential of fear helped to reconstruct the psychological States of people in the context of a pandemic and to identify the structure of fear. In modern life, fear manifests itself in three aspects: before-than fear, fearfulness and about-than fear. As a result of the all-embracing nature of fear, the fearogenicity of being is born, which violates the stability of the individual's existence, its being in, dwelling in, and mastering with. The above leads to the individual's awareness of the direction of life towards death, which forces him to adapt to new conditions. As a support of the personality in its opposition to fear, we can call hope and effective manifestations that perform the role of care.

In field experiments, an insect was trained to choose one of two visually different figures – A or B – in reference to situation (“situational learning”). Bees and wasps were shown to be able: 1) to choose A and to reject B at one location (place) of presentation of test figures and vice versa at the other location (at a distance of 1–8 m); 2) to choose A and to reject B at C-colored background and vice versa at D-colored background (at constant location). It is the first evidence of bees’ ability to make decisions depending on background color and the first evidence of wasps’ ability to perform situational learning. The described behaviors resemble “conditioned switching”, which is well known in vertebrates. Statistically significant individual differences between conspecifics have been recorded

The article examines the scientific work of one of the prominent representatives of the 20th century Azerbaijani piano performing school, Honored Art Worker, Professor Nigar Usubova (1914–1994). N. Usubova devoted an important part of her life to pedagogical activity, raising a generation of talented pianists. She made an exceptional contribution to the development of the Azerbaijani piano school and the definition of its future directions. N. Usubova’s pedagogical principles are reflected in her dissertation work and methodical manual. As it is known, N. Usubova studied in the class of A. Goldenweiser and wrote these scientific works under the guidance of the prominent pianist. An important part of these scientific works is devoted to the study of A. Arensky’s piano creative activity. Here, the musician touched upon the features of the composer’s piano performing, as well as the characteristic features of his music. The research also provides performing characteristics of the works analyzed and covering various genres. The purpose of the research is to study the fundamental results and main performing principles in the scientific works dedicated to A. Arensky’s piano creative work by Nigar Usubova, a brilliant representative of the Azerbaijani piano school of the twentieth century. In these scientific research works, N. Usubova touched upon the features of the prominent composer’s piano creative work, performing principles, circle of images; moreover, analyzed the form, genre, tone and other aspects and conducted research on the background of characteristic features of Russian music. We would like to bring to your attention that N. Usubova’s scientific works have not been published. This raises the scientific significance and relevance of the topic more. These scientific works are the first research work dedicated to the study of A. Arensky’s piano music in the Azerbaijani science of music. The research methodology is based on analytical and theoretical analysis, as well as on the source research method (work with archival materials). The main principle is the study and analysis of the fundamental results obtained by N. Usubova in the study of piano music by A. Arensky The scientific novelty of the research is that for the first time the scientific works of the outstanding pianist Nigyar Usubov are studied, their scientific significance, as well as the issues reflected in those works, are revealed. We would like to bring to your attention that these scientific works reflect N. Usubova’s method of approach to A. Arensky’s piano pieces as a pianist. For this reason, these scientific works are a valuable recommendation for every pianist who turns to A. Arensky’s piano creative work. Conclusions. Nigar Usubova is the author of two scientific works and her scientific creative activity is devoted to the definition of performing features of A. Arensky’s piano creative work. Each of these scientific-methodical works was written under the guidance of a prominent representative of the Russian piano school, pedagogue A. Goldenweiser. In these works, N. Usubova worked on A. Arensky’s creative work in a comprehensive and detailed way. According to the author, A. Arensky’s piano creative work is characterized by the clarity of form and texture, the richness of melodic material, which brings him closer to Tchaikovsky’s chamber music. Although the composer prefers miniature forms in his piano creative work, it is also possible to find virtuoso pieces, etudes, scherzos and capriccios. These works, in particular, influenced the formation of S. Rakhmaninov’s and A. Scriabin’s creative activity. The main characteristic features here are polyphonism, polymelodism and polyrhythmics of the piano texture. Simultaneously, N. Usubova thoroughly studied the influence of Western European composers on the formation of A. Arensky’s creative activity.

Тhematic Index.

The article discusses the role of the poet, writer, journalist and translator Rinaldo Küfferle (1903–1955) in the distribution of Ivan Bunin’s works in Italy in the 1920s and 1930s. Küfferle’s critical essays about Bunin in Italian literary journals, his translations of Bunin’s poems and short stories, different stages of promotion of the writer's works in Milan publishing houses (a novel “The Life of Arsenyev” and a collection of short stories) are identified and analyzed. The article also provides a number of archival materials on Küfferle’s personal relations with Bunin.

An analytical review of the digital facial anthropometry application in the scientific and practical problems of the contemporary human world is presented. The research includes a brief history of anthropometry emergence (as a descriptive and comparative science, the subject of which is human) and its transformation into contemporary computer methods of digital anthropometry. We have considered the application features of digital facial anthropometry. They are: the concepts of the morphotype and phenotype of the face, problems of morphology and morphometry, as the basic means of digital facial anthropometry, methods of quantitative and qualitative assessment of the characteristics and parameters of individuals, the task of finding associations between gene sets in the genome and human facial features, the task of assessing the attractiveness and beauty of individuals, the relationship of facial anthropometry with "Chernoff Faces" and cognitive computer graphics used in practical medicine, the phenomenon of the human face and the problem of determining the emotions, sex and psycho-type of a person, special cases of face image recognition tasks, methods for solving them within the framework of digital facial anthropometry and examples of their solution. We have determined the prognosis for the close connection of digital facial anthropometry and the “Internet of things” in the contemporary world.