bluuebunny/crossref_metadata_2025 huggingface dataset:
Проблемы поэтики раннего Чехова в соотношении с газетным дискурсом
Authors: Zoltán Dominika
Published: December 2023

В статье рассматриваются некоторые особенности поэтики ранних работ (1880–1885) А. П. Чехова в сопоставлении с современной ему газетой в качестве дискурса. В первой половине 1880-х годов завершается процесс, в результате которого ежедневная газета выдвигается как доминирующий орган в новой системе печати. Этим зарождается массовая коммуникации в России, необходимой частью которой являлась «малая пресса», то есть сфера юмористических журналов, тонких журна-лов и ежедневных газет, в которых Чехов начал публиковаться.

В статье суммируются выводы исследований, реконструирующих культурное пространство рос-сийских газет и журналов обозначенного периода. Вводимое в целях сравнения понятие «газетный дискурс» понимается в статье как новое, единое пространство, которое стремится к универсально-му моделированию мира производством текстов. Газетный дискурс как термин отделяется от по-нятий «малой прессы» и «журналистики». В конце первой части рассматривается также понятие дискурсивной практики и интердискурсивности как один из видов интертекстуальности по клас-сификации Н. Фэркло.

Во второй части суммируется типология, созданная А. Степановым для ранних текстов Чехова на основе смешения или смещения в них высказываний разных речевых жанров. В дальнейшем на основе типологии выделяются те юморески, в которых обыгрываются газетные речевые жан-ры. Для сравнения с практикой газет наиболее интересным из структурных типов ранних текстов является метонимическое рядоположение не имеющих общего референта высказываний одного или разных речевых жанров. И. Сухих считает, что в принципе метонимического упорядочения мелочишек (создание циклов, серий и списков) проявляется требование газет и журналов того времени. «Мысли читателей газет и журналов» и «Записка» интерпретируются как построенные по принципу списка юморески, высмеивающие общую практику газетного дискурса – стремление к универсальности.

В двух юморесках освещается элемент пародийного интердискурса: построение по принципу спи-ска. Этот структурный тип в общем плане в творческой эволюции Чехова ведет к более сложным, составным структурам типа «Жалобной книги». Часто используемый молодым Чеховым газетный жанр реклам и объявлений также может быть переосмыслен как составная структура типа серий или списка. Интердискурсивный элемент в творческой лаборатории Чехова трансформируется в художественный прием: метонимическая логика составления списка становится индексом состо-яния, духовности, атмосферы изображаемой действительности.
Perceptions of psychedelic personality change, determinants of use, setting and drug moderation: Toward a holistic model
Authors: Weiss Brandon , Sleep Chelsea E. , Beller Nicholas M. , Erritzoe David , Campbell W. Keith
Published: December 2023

Background

Studies have shown evidence for long-term effects of psychedelics on personality, but comprehensive models of psychedelic-mediated personality changes have yet to be explored.

Aims

The present study aims to investigate (1) perceptions of personality change in the general population, (2) moderators of perceived personality change including setting and drug type, and (3) whether personality predisposes individuals to use psychedelics.

Method

Paid participants with experience using psychedelic (N = 218), non-users with interest in using psychedelics (N = 104), and non-users without interest in using psychedelic (N = 104) completed an online survey following recruitment from Amazon Mechanical Turk. Psychedelic users were asked to complete written open-ended accounts of perceived personality changes that they attribute to their most intense psychedelic experience. Thematic and factor analyses were undertaken to identify themes of perceived psychedelic change and their organizational structure.

Results/Outcomes

Thematic analyses resulted in 52 unique personality change themes, and exploratory factor analyses yielded eight thematic factors (Unitive Spiritual, Gratitude Absorption, Purpose Freedom, Compassion Understanding, Emotional Stability, Openness Perspective, Connection to Self, and Neuroticism Caution). Interest in psychedelic use among non-users was associated with higher openness and neuroticism. Psychedelic users tended to be more open and extraverted, and less neurotic than non-users, and interested non-users tended to be higher in openness than uninterested non-users.

Conclusion/Interpretation

The present results inform a tentative model of how personality leads to psychedelic use, how psychedelic use leads to changes in personality, and how setting and drug moderate different types of changes in personality. Research and clinical implications are discussed, including (1) hypotheses for future prospective and experimental research, (2) the value of creating multi-faceted, holistic measures that reflect the diversity and organizational structure of possible psychedelic changes, and (3) the value of allowing such evidence to guide novel psychedelic-assisted therapeutics.
Flexible multifunctional titania nanotube array platform for biological interfacing
Authors: Amani Hamedani Hoda , Stegall Thomas , Yang Yi , Wang Haochen , Menon Ashwin , Bhalotia Anubhuti , Karathanasis Efstathios , Capadona Jeffrey R. , Hess-Dunning Allison
Published: December 2023

The current work presents a novel flexible multifunctional platform for biological interface applications. The use of titania nanotube arrays (TNAs) as a multifunctional material is explored for soft-tissue interface applications. In vitro biocompatibility of TNAs to brain-derived cells was first examined by culturing microglia cells—the resident immune cells of the central nervous system on the surface of TNAs. The release profile of an anti-inflammatory drug, dexamethasone from TNAs-on-polyimide substrates, was then evaluated under different bending modes. Flexible TNAs-on-polyimide sustained a linear release of anti-inflammatory dexamethasone up to ~11 days under different bending conditions. Finally, microfabrication processes for patterning and transferring TNA microsegments were developed to facilitate structural stability during device flexing and to expand the set of compatible polymer substrates. The techniques developed in this study can be applied to integrate TNAs or other similar nanoporous inorganic films onto various polymer substrates.

Impact statement

Titania nanotube arrays (TNAs) are highly tunable and biocompatible structures that lend themselves to multifunctional implementation in implanted devices. A particularly important aspect of titania nanotubes is their ability to serve as nano-reservoirs for drugs or other therapeutic agents that slowly release after implantation. To date, TNAs have been used to promote integration with rigid, dense tissues for dental and orthopedic applications. This work aims to expand the implant applications that can benefit from TNAs by integrating them onto soft polymer substrates, thereby promoting compatibility with soft tissues. The successful direct growth and integration of TNAs on polymer substrates mark a critical step toward developing mechanically compliant implantable systems with drug delivery from nanostructured inorganic functional materials. Diffusion-driven release kinetics and the high drug-loading efficiency of TNAs offer tremendous potential for sustained drug delivery for scientific investigations, to treat injury and disease, and to promote device integration with biological tissues. This work opens new opportunities for developing novel and more effective implanted devices that can significantly improve patient outcomes and quality of life.

Graphical abstract
Wybrane relikwiarze ze Świętych Schodów („Scala Santa”) w krypcie pod kościołem Ojców Pijarów w Krakowie
Authors: Marszałek Mariola , Gaweł Adam , Pachuta Karolina , Buszko Eliza
Published: December 2023

W latach 2017–2020 w obrębie krypty, piwnic oraz klasztoru Ojców Pijarów w Krakowie przeprowadzono kompleksowe prace konserwatorsko-budowlane. W czasie ich trwania dokonano wielu sensacyjnych odkryć, między innymi w tajemniczych schodach w prezbiterium krypty odnaleziono 59 relikwiarzy. W miarę postępu prac konserwatorskich i badawczych stało się jasne, że krypta pod kościołem oryginalnie stanowiła kaplicę Świętych Schodów, jeden z niewielu tego typu zabytków na świecie. Konserwatorzy wydobyli i zakonserwowali relikwiarze, a trzy z nich poddali zostały specjalistycznym badaniom. Wybrano relikwiarz zawierający przezroczysty krzyż z cząstką Krzyża Świętego oraz dwa nieprzezroczyste obiekty: niebieski koralik i czarny paciorek. Obiekty zostały przeanalizowane metodami nieniszczącymi i nieinwazyjnymi. Stwierdzono, że krzyż relikwiarzowy jest wykonany z kryształu górskiego, koraliki wykonane są ze szkła. W miarę możliwości omówiono również pochodzenie obiektów oraz czas ich powstania.
Support of Manufacturing Industry of Ural Economic Region Under Sanctions
Authors:   Ural State University of Economics, Pyankova Svetlana , Kombarov Mikhail ,   Ural State University of Economics
Published: December 2023

The main feature of modern economic realities, which Russia faced in 2014, is the sanctions pressure applied on the country by leading economic powers. The import substitution policy will ensure the resilience of the domestic economy to the external environment, and one of its sectors that must be supported within the framework of such a policy is the manufacturing industry. This article shows that in order to make a particular sector of the economy independent of import will allow the acceleration of the annual dynamics of investment in fixed capital, for which it is advisable for the authorities to continue to develop special economic zones. It is noted that, at present, there is a lack of these zones on the territory of Ural economic region. By calculating three indicators, namely the localization coefficient in terms of output, the localization coefficient in terms of the number of employees, and the localization intensity coefficient, it was found that Kurgan and Orenburg regions, Perm Krai, and Udmurt Republic need them. And if the Orenburg region and the Perm region have already moved off the dead center, then in the Kurgan region and the Udmurt Republic, such an event did not take place. Based on the situation observed in these regions, it was stated that the status of special economic zones should be assigned to industrial parks located on their territory. This will provide companies that are currently residents of these parks with new tax preferences, which will become a trigger for annual dynamics growth of the volume of investments in fixed assets, and, consequently, for the implementation of the import substitution policy.
Latine and Asian American MillenniGenZ: Who are They and What are They Thinking?
Authors: Wachs Faye Linda , Danico Mary Kunmi Yu
Published: December 2023

This special journal issue on Latine and Asian American MillenniGenZ highlights the complex nuanced stories of this generation as they navigate advancing technologies, rethink what it means to have human interaction, and consider ways to live in a world that does not have a direct path moving forward. The issues also bring forth social institutions, issues, and identity politics that can get in the way of our BIPOC MillenniGenZ educational experiences.
Exploring What MilleniGenz Think About Range of Social Issues
Authors: Hanink Peter A.
Published: December 2023

It has long been accepted that young adults are more socially and politically liberal than the middle-aged or elderly. It is also accepted that as a generational cohort ages, its views become more conservative. But does this piece of received wisdom apply to MillenigenZ? It is well documented that MillenigenZ are far more liberal on political and social issues than older generations. What is less certain is whether this leftward lean will persist as the MillenigenZ age or whether they will go through the same rightward shift as members of Generation X, the Baby Boomers, and the Silent Generation did before them. In this study, we address this question in two ways. First, we examine differences in MillenigenZ’s attitudes on a range of social and political issues between two waves of a survey. Second, we compare the attitudes of the youngest members of the MillenigenZ generational cohort to those of the oldest to see whether there are intra-generational differences. Our findings suggest that MillenigenZ are not getting more conservative as they age and, from the youngest to the oldest, remain remarkably uniform in their left-leaning social and political attitudes. Findings from this study advance our understanding of not only this generation but also how generations change over time.
TECHNOLOGICAL SOLUTIONS ON EFFECTIVE UNLOADING OF CARGO FROM FROZEN TOGETHER RAILWAY OPEN WAGONS
Authors: S. P. Minyeyev  , А. А. Prusova  , M. А. Vyhodin  , А. S. Minyeyev
Published: December 2023

The basic progressive decisions witch are put in technology of the destructions of the frozen cargo in railway gondola cars before its unloading during winter time are considered. The static vibrocrashing unit, special unfreezing garages (convective, combined, with infra-red radiators and torches), car dumpers and crash-milling machines are considered
CONSTRUCTION TECHNOLOGY BUILDING WITH CONSTRUCTION-MONOLITHIC SKELETON
Authors: M. I. Netesa  , D. V. Palanchuk
Published: December 2023

The problems of erection of buildings are expounded with reinforced-concrete framework, consisting of collapsible columns, emptiness flags of flooring, monolithic rygeley and areas being at one level of every floor
COMPARATIVE ANALYSIS NDS SUBGRADE WHEN MODERNIZATION
Authors: V. D. Petrenko  , V. T. Huzchenko  , A. L. Tiutkin  , А. М. М. Alkhdour  , V. V. Kovalevich
Published: December 2023

In the article the results of comparative analysis of the tensed and deformed state of earthen linen during modernization are resulted (measures against deformation)
ANALYSIS METHODS OF CALCULATION OF RELIABILITY CONCRETE SPAN HIGHWAY BRIDGES
Authors: B. V. Savchinskiy
Published: December 2023

The article discusses methods of probability calculations of reinforced concrete bridge spans: a method of statistical linearization and the method of statistical modeling. The main sections to calculate the reliability of the recommended method of statistical linearization
RESULTS OF STUDIES OF FROST RESISTANCE, STRENGTH AND DEFORMATION PROPERTIES OF CONCRETE FROM THE TECHNOLOGICAL CHARACTERISTICS OF CONCRETE MIXTURES
Authors: А. А. Chub
Published: December 2023

The article presented the results of studies of frost resistance, strength and deformation properties of concrete on the technological characteristics of concrete mixtures, which was required for proper consideration of technological and organizational solutions in the construction of railway facilities
QUESTION OF TRAIN SPEED ACCOUNT AT DESIGNING OF BEAM BRIDGES
Authors: V. Ye. Artyomov  , A. S. Raspopov
Published: December 2023

It is offered a technique of the train speed movement approximation for beam bridge systems. Coefficients of accounting of motion speed which can be used in practical engineering calculations of bridge constructions are determined
EFFECTIVE COMPOSITIONS OF CONCRETES ON THE BASIS OF GRANSHLAK FACTORY THE NAME PETROVSKOGO
Authors: N. Netesa  , D. Palanchuk
Published: December 2023

The results of determination of rational compositions of concretes answering requirements of operating standards on tensile strength on the compression for some constructions are represented. In these compositions as a basic component used granshlak factory the name Petrovskogo and as ash of taking away of Prydneprovskoy GRES and milltailingss iron-stones of Kryvorozhskogo UGZC.
INVESTIGATION OF CARRYING CAPACITY INCREASE ROADBED FOR FAST TRAIN
Authors: V. D. Petrenko  , V. P. Kupriy  , М. А. Lysnevskyy  , А. М. Alhdur
Published: December 2023

For the period the use of geosynthetic materials in our country were offered many variations amplification subgrade. In the paper presented analysis of the stress-strain state and strain construction railway embankment. Resultsof the analysis indicate that the stress state subgrade is largely dependent on location, type, shape and deformation characteristics of geosynthetic materials.
EFFECTIVE INSULATION FROM WASTE MATERIAL GLASS INDUSTRY
Authors: А. Pshinko  , А. Krasnyuk  , Е. Gromovа  , А. Shcherbak
Published: December 2023

The article deals with one of the areas of recycling glass industry as an effective heat-isolation materials. Modern insulating material with high physical-mechanical and former expluatation properties have foam glass.
ECCENTRICITY INFLUENCE ON WORK OF THE LIGHTWEIGHT STEEL FRAMING BUILDINGS’ COMPRESSED ELEMENTS
Authors: N. Savitsky  , О. Zinkevych  , А. Zinkevych
Published: December 2023

Dependences of compression load eccentricity on steel cold-formed elements cross-section’s reducing were received. The estimations of additional eccentricity’s influence (caused by displacement of the central axes after crosssection’s reducing) and an opportunity of its account by factor’s introduction were carried out.
CONCEPTUAL DIRECTIONS OF DEVELOPMENT OF TECHNIQUE OF THE GOVERNMENT SPECIAL SERVICE OF TRANSPOR
Authors: О. P. Baranov  , S. A. Yakovlev  , I. Е. Kramar  , А. I. Shaptala
Published: December 2023

In the article the questions of theoretical ground of criteria of methodology of choice of standards of mobile universal technique are considered for implementation of tasks on renewal of objects of a transport system of Ukr
MATHEMATICAL MODEL OF OPTIMAL STRUCTURES WITH THE MACHINE MOBILE SQUAD BUILDING MECHANIZATION
Authors: О. P. Baranov  , I. N. Shcheka
Published: December 2023

Based on the analysis of the use of mechanical means for the construction, reconstruction, rehabilitation facilities of the national transport system a mathematical model to determine the optimal composition of specialized sets of Building machinery.
DESIGN OF FOUNDATION PLATE OF GRAIN SILAGE ON REINFORCED STOCHASTIC SOIL BASE
Authors: Y. L. Vynnykov  , М. O. Kharchenko  , V. I. Мarchenko
Published: December 2023

It is determined the allowable irregularity loading of two grain silage, which have a common foundation plate on the weak soil base, while not exceeding a heeling building will be within the rules. For this purpose the numerical modeling of tensely-deformed state (TDS) of weak soil base, which reinforced by vertical soil-cement elements (VSCE), foundation plate of grain silage by 3D finite element method (FEM) was done. It used as a soil model the Hardening Soil Model (HSM) with parameters, which selected on the field geodetic observations by settlements ofreinforced soil base of plate. This model adequately describes the TDS of soil base as on the stages of loading and unloading. It is found the statistical parameters of settlements and heeling of foundation plate by statistical simulation of TDS of reinforced soil base by VSCE. For reliability level p  0,9 the minimum required percentage of reinforcement soil base by VSCE is chosen ( i 19 %) using these data.
DESIGN AND CALCULATION OF COMBINED BRIDGE TRANSITION
Authors: М. V. Gogol  , М. R. Bilsky  , I. D. Peleshko
Published: December 2023

Article is devoted on the design and calculation of the combined metal transitions taking into account the strain state of the beam stiffness and using the calculation method of regulation of the stress-strain state. The results of theoretical studies for the rational design of combined systems.
FOR THE DETERMINATION OF LIMIT WEAR OF ROAD BRIDGES SUPERSTRUCTURES
Authors: А. I. Lantkhouh-Lyashchenko  , К. V. Medvedev
Published: December 2023

This paper presents the new probabilistic approach for the determination of limit wear of road bridges superstructures. The focus of this paper is on the wear modeling of highway bridge elements by a numerical parameter ofreliability. It serves, in the model, a quantitative estimation of limit service-life of elements. For the purpose of the bridge maintenance that model should give quantitative criteria of integrated estimation and prediction of condition assessment an element while in service.
THE APPLICATION OF OPTIMIZATION METHODS TO THE CALCULATION OF STRENGTH OF REINFORCED CONCRETE ELEMENTS
Authors: S. N. Mykytenko
Published: December 2023

The method of calculation of strength of normal sections of reinforced concrete elements is offered on the basis of optimization approach
COMPARATIVE ANALYSIS OF THE TENSED STATE OF THE ONESHIELD TYPE STATION CONSTRUCTIONS OF THE SHALLOW CONTOUR INTERVAL
Authors: V. D. Petrenko  , А. L. Tutkin  , М. V. Kharatyan  , V. I. Petrenko
Published: December 2023

In the article the results of comparative analysis of the tensed state of the standard one-shield station of shallow contour interval and modified construction for the through driving are resulted.
BUCKLING COEFFICIENT DEPENDENCE DETERMINATION FROM THE FLEXIBILITY OF STEEL CONCRETE ELEMENT
Authors: D. G. Petrenko
Published: December 2023

The article describes current methods for calculating the stability of reinforced concrete elements, taking into account the dependence of the longitudinal bending of the flexible element.
CONSTRUCTION OF ROAD FLYOVER (OVERPASS) OF THE TERMINAL COMPLEX «D» OF DMA «BORYSPIL», KYIV
Authors: P. V. Popruga  , L. A. Sheynich  , M. G. Mykolayets
Published: December 2023

The paper considers the construction technology of road flyover (overpass) of the terminal complex «D» of DMA «Boryspil». Presents a brief description of the technological requirements for construction. The technology ofproduction of different jobs: from installation of the formwork to the concreting and care for the concrete. Also describes the process of selection the compositions of heavy concrete.
ACOUSTIC EMISSION IDENTIFYING OF FRACTURE SOURCES OF ALUMINUM ALLOY
Authors: V. R. Skalsky  , I. M. Lyasota  , O. М. Stankevych  , Т. M. Selivonchyk
Published: December 2023

The features of acoustic emission generation by static fracture of thermostrengthened aluminum alloy 1201-T were considered. With the help of metallographic and fractographical studies it was found that the alloy is destroyed by brittle-ductile fracture mechanism, where the brittle component corresponds to intermetallic cracking Al2Cu and ductile – to solid solution. Analysis of wave representation and their continuous wavelet transformation allows us to recognize clearly the aluminum alloy fracture mechanisms using acoustic emission signals.
TESTING METHOD OF CALCULATION OF JOINT STATIC "STRUCTURE - SOIL MASS"
Authors: G. Е. Huslysta  , D. О. Bannikov
Published: December 2023

The numerical simulation methodology of the process of interaction between structures and soil massif has been developed. The main feature of this static analysis technique is consideration the structure and soil massif as unified system “structure – soil massif”. The verification of this technique has been conducted. The static analysis of sheet-pile walls without anchors and reinforced beams on soil foundation was taken as verify tests
RESEARCH OF THE DYNAMIC OPERATION OF ROAD METAL CONTINUOUS BRIDGE UNDER TEMPORARY LOAD
Authors: V. V. Marochka  , P. О. Pshinko  , І. V. Klimenko  , S. М. Zagorulko
Published: December 2023

Purpose. Research of the real dynamic of metal road under continuous over the span of modern time load, the influence of defects and structural features on the bridge of additional dynamic effects as well as a character research of dynamic parameters change after long term operation of the bridge structure. Methodology. Dynamic testing using modern bridge strain gauge instrumentation, structural analysis in accordance with applicable rules, modeling of the superstructure with a modern software system, as well as processing and experimental results are compared with the calculated values. Findings. On the basis of the complex scientific and technical work on a metal test continuous over the span of the bridge was able to determine the dynamic factors caused nearby, appeared with time operation, defects, and design features of the bridge, which adversely affect the dynamic performance of the span,causing increased wear of the metal elements of its construction. Originality. Based on the analysis of dynamic features of metal road bridges after a long period of their operation, was able to study a number of influences that allow more accurately account for the dynamic singularity of such bridges in the design, compared with the classical engineering-stock method using the dynamic factor, which is regulated serving the normative documents of Ukraine. Practical value. This research allows us to improve and expand the opportunities for existing building codes, namely, the dynamical calculations of road metal bridges for modern live loads, as well as – to take into account a number of features that affect the appearance of additional dynamic effects that increase the rate of wear their designs.
GROUNDING OF PARAMETERS OF SOILS CHEMICAL GROUTING BY KYIV UNDERGROUND CONSTRUCTION
Authors: V. І. Petrenko  , V. D. Petrenko
Published: December 2023

Purpose. For the tunnels of shallow contour interval fixing of the weak watersaturated soils in their bases by different chemical reagents is actual. In this connection it is accepted widely to use the chemical reinforcement of soils on the basis of drill-mixture technology. Its essence consists that mining holes are drilling in soils, in which injectswith the revolved monitor are submerging through, which is carried out of astringent as the mixture of cement, liquid glass and other components. It provides formation of soil-cement or soil-silicate constructions which substantially strengthen the ground arrays, multiplying their strengthed descriptions. Methodology. Using existent positions about fixing of weak soils by chemical methods, it is necessary by an analytical way to find the decision of task about the increase of carrier capability of the ground arrays in the conditions of high degree of watercontent. Findings. On the basis of data analysis of researches on fixing of weak bases, it is set that in modern terms for strengthening of the ground weak grounds it is necessary to use the method of interfusion of soil with the astringentmatters which are given under certain pressure into soil. Originality. The parameters of carrier capability of the chemically fastened soils for prevention of immersion of the mechanized shield are explored. Practical value. The chemical fixing of soils by application of drill-mixture technology got wide propagation in practice for strengthening of foundation and bases in hydrotechnical, industrial, civil and transporting building.
EXPERIMENTAL DEFINITION OF RESIDUAL STRESSES IN CONCRETE CONSTRUCTIONS
Authors: V. P. Redchenko
Published: December 2023

Purpose. Relevant for bridges, which are operated, is a matter of determining the stress state of the structures standing loads. To solve this problem is proposed to determine the stress specified by the nonessential local destruction, which need to be improved. Methodology. Theoretical research produced by finite element modeling of differentvariants of local destruction of prestressed concrete. The theoretical results have been verified in-situ experiment. Findings. Based on an analysis of theoretical studies have formulated the basic principles of practical implementation method for the determination of permanent stresses for concrete structures of bridges by performing shallowslits in prestressed concrete. To check the results of theoretical research was carried out full-scale experiment. Originality. The dependence of changes in the stress state in the concrete surface of the slit parameters. Proposed improved algorithm for determining the initial stresses in the concrete for their variation on the surface of the concretework at slot. Practical value. Implementation in practice of the developed method will more accurately determine the technical state of reinforced concrete bridges. According to the results of field experiment, it was clarified the technical condition of the bridge abutments and developed recommendations for its repair, and organization that deals with the content of this bridge was sent to the technical report.
MODELLING OF THE SUPPORT WALLS DESTRUCTION IN THE CASE OF THE AGGRESSIVE GROUND WATERS INTERACTION
Authors: N. N. Biliaev  , Ye. Yu. Gunko
Published: December 2023

Purpose. Ground waters flowing through the soil could leach different salts and gases. As a result these waters obtain the ability to destroy cement solutions (cause the corrosion of cement stone). Prediction of the construction destruction in this case is a problem of great interest. The goal of this paper is the development of numerical model to compute the cement stone destruction during the contact with aggressive ground waters. Methodology. A numerical model was used to simulate the process of the supporting walls destruction during the contact with aggressive ground waters. FORTRAN language was used to develop the code. Equation of the mass conservation was used as the governing equation. A rectangular difference grid and implicit difference scheme were used to develop a numerical model. Findings. A code was developed to carry out the numerical experiment. The results of the numerical experiment show the time change of the slot dimensions and geometrical form. These results show the slow increasing of the slot width and the space filled with water. To compute the problem it takes 15 sec. To develop the 3-D model of this process is the further step of this investigation. Originality. A new numerical model was developed to compute the cement stone destruction during the contact with aggressive ground waters. The model allows to predict the dynamics of destruction in the case of the slot having comprehensive geometrical form. Practical value. The developed numerical model can be used for quick prediction of the cement stone destruction
FEATURES OF DESIGNING STRUCTURES ON THE TRANSPORTS INTERCHANGES IN CRAMPED CONDITIONS
Authors: IVAN VOYTOVICH  , YURIY LOTOTSKIY  , ANDREY FAL  , B RISYK
Published: December 2023

Purpose. Offer new approaches in the design of road interchanges at different levels in cramped conditions. Results. Examples of design solution of road interchanges at different levels in cramped conditions. Practical value. Proposed engineering solutions using world experience designing road interchanges at different levels and the use of post-tension curved span bridges, uninterrupted traffic on transportation hub, reducing publicinvestment and ensure the maintanance of bridges.
THE TECHNIQUE OF CALCULATION AND DETERMINATION OF THE CARRYING CAPACITY OF REINFORCED CONCRETE ARCHED CONSTRUCTIONS WITH RIDING SURFACE ACCORDING TO THE CLASSIFICATION METHOD
Authors: N М POPOVICH  , D YU IGNATENKO
Published: December 2023

Purpose. Comparing Classes rolling elements with classes superstructures gives an indication of the possibilities and conditions of his passes over the bridge. Methodology. For the main beams span determine the maximum intensity of temporary vertical uniformly distributed load that does not cause a limiting condition during normal operation of the bridge. Thus calculated intensity for brevity called allowable time - viscous heating. Findings. The formulas were derived classes of the main beams carriageway Darnytsia railway bridge. Originality. The formulas for determining the classes of the main beams of the roadway arch concrete superstructures with riding on top and defined ways of loading multivalued lines of influence in the case of different variants of calculation . Comparison of the class to evaluate the accuracy and error in determining for various design schemes. Practical value. By this procedure the major classes were defined by the beams of the bridge roadway Darnytsia as an example.
WEATHER-RESISTANT ROLLING STOSK OF STRENGHT CLASSES C355-500 FOR METALLIC CONSTRUCTIONS OF BRIDGES
Authors: А G SINEOK  , А М GERASIMENKO  , V D RYABOKON  , К V RYABTSEV  , А А GOTSYLUAK
Published: December 2023

Purpose. Application for span structures of bridges, steel with increased corrosion resistance. Methodology. To achieve the research purpose was used methodology and documents are accepted at building of bridges.Findings. Researches are presented of service properties, weld ability, as well as corrosion resistance of 06G2BDP steel of strength class C390-500, conducted weld ability studies, and developed technologies of submerged-arc and mechanized welding for fabrication and mounting of bridge metal structures. Originality. Sparsely-alloyed 350-500 MPa steel of 06G2BDP grade with increased atmospheric corrosion resistance was recommended for fabrication of bridge metal structures. Practical value. Choice steel for fabrication of bridge metal structures.
INVESTIGATION OF STRESS-STRAIN STATE CORRUGATED METAL STRUCTURES UNDER INTERACTION WITH SOIL BACKFILL
Authors: B STASYUK  , V STANKEVYCH  , V KOVALCHUK  , J LUTCHKO
Published: December 2023

Purpose. The purpose of this paper is to conduct a study of the stress-strain state corrugated metal structures in the interaction with the soil backfill. Such studies will help to establish the causes of defects corrugated metal structures, which help to provide timely engineering solutions, which in turn can lead to increased carrying capacity ofthe CIM. Methodоlogy. Calculations of the stress-strain state corrugated metal structures made by finite element method using the licensed program FEMAP with MSC NASTRAN. In carrying out these calculations take into account the degree of compaction of backfill soil and the magnitude of the dynamic load of rail transport. Findings. According to the calculations, the margin structures ranging from 45% to 34%, depending on the degree of compaction of backfill soil, and for the emergence of early irreversible plastic deformation, an external load to be exceeded more than 2.48 times compared to the load at the design state track and loads on the track, which has allowed inequality.Originality. First Settlements stress-strain state corrugated metal structures under interaction backfill with soil, taking into account the complex factors such as the degree of compaction of backfill soil and the magnitude of the dynamic load of rail transport. Practical value. The results of the stress-strain state corrugated metal structures can be used to beat designers and engineers of test bridges stations Railways and Ukravtodor.
ANALYSIS OF DYNAMIC TESTING OF BRIDGES USING THE PROGRAM «SPECTRUM»
Authors: V. P. REDCHENKO
Published: December 2023

Purpose. Relevant to the bridges, which are operated, is to determine the actual parameters of natural modes, which actually allow the identification of the design as a dynamic system. It is proposed to determine these parameters for the results of dynamic tests to analyze them in the developed computational and analytical system «Spectrum». Methodology. Defining the parameters of natural modes is done by analyzing the spectral functions of free oscillations of the structure. Testing program was conducted as a model with the given parameters of the natural oscillations, and the results of tests of natural objects. Findings. A working version of the «Spectrum», which allowsdetermination the frequency, the logarithmic decrement and normalized coordinates of natural modes of bridge spans on the analysis their free oscillations. Originality. The program implemented advanced spectral analysis algorithms, which allow calculations in the case of condensation of natural frequencies, when classical spectral analysis algorithms do not work. Practical value. Implementation in practice of the developed program will more accurately determine the parameters of natural modes of bridge spans and better determine their technical condition.
DETERMINATION OF BUILDINGS BASIS SUBSIDENCE FOR SOIL COMPRESSION INDICATOR
Authors: YU. L. VYNNYKOV  , N. A. KOSTOCHKA  , I. V. MIROSHNYCHENKO
Published: December 2023

Purpose. To improve the methodology for determining the soil base settlements from the foundation pressure on the parameters of compressibility compressible soil depth strata. Methodology. Laboratory methods for determining the physical and deformation properties of soils; soil mechanics methods; subsidence calculation based on the foundation of layer summation method. Findings. Comparative calculations settling foundations by summing layered methods for using DBN V.2.1-10-2009 deformation modulus of soil and PoltNTU method by using soil compressibility index to improve soil subsidence prediction foundations of buildings. Increased accuracy of forecasting methods of settling base building foundations by using soil compressibility index and the effect of pressure on the deformation parameters of soil and its porosity changes the depth of compressible strata. The calculation results by an improved and normative techniques compared with the data of field observations. Subsidence of foundations bases defined by this index, to 27 % higher than calculated by the soil deformation modulus Originality. Increased accuracy of prediction methods of settling base building foundations by using soil compressibility index and the effect of pressure on the deformation parameters of soil depth compressible strata. Practical value. Increased reliability prediction of subsidence soil base building foundations.
THE FEASIBILITY OF PARAMETERS PROTECTIVE STRUCTURES OF DYNAMIC INFLUENCE OF UNDERGROUND ON WEAK BASES
Authors: YE. YU. KULAZHENKO
Published: December 2023

Purpose. The aim of this article is the elaboration of effectiveness methods on decrease specific deformation and active influence of dynamic load of railway equipment in shallow subway at the system “modular-precast lining – soil mass”, which can be constructed from a ground surface and a tunnel current, as well as can be constructed in the construction phase of subway. Methodology. To solve the problem of collaboration system “modular-precast lining – soil mass” which was numerically simulated by finite element method (FEM). The originally results of the calculations has been determined the most effective way of the fixing of the weak soil foundation which composed of saturated sands. Findings. According to the research was identified changes in the frequency of natural oscillations of the system “modular-precast lining – soil mass” as well as the amount of vertical deformation changes in the system for fixing the base of a variety of methods: crushed stone and sand cushion of different heights and grouting piles. Originality. Defined methodology for calculating the tunnels of shallow modular-precast lining in the array shown watered sands. Practical value. Presents options for strengthening the results of calculations of the array of underground structures by numerical finite element method, which allows for more a more complete picture of the results of calculation of stress-strain state of the system “modular-precast lining – soil mass”. According to the calculation results of determining the most effective method to reduce the amount of deformation in the comparison of various parameters.
DESIGN WATERPROOFING IN THE CONSTRUCTION AND OPERATION OF THE TUNNEL
Authors: М. А. LISNEVSKYI  , V. Т. GUZCHENKO  , YE. YU. KULAZHENKO
Published: December 2023

Purpose. One of the problems of modern construction of underground structures using prefabricated structures is to provide reliable waterproofing of structural elements. Waterproofing these facilities consists of a set of measures aimed at improving the water resistance of surfaces and sealing elements of their joints. The choice of materials for this construction, it is determined by the elements, the technology of their installation and operating conditions. Therefore, when designing gidroizoinsulation main task is to ensure reliability during operation. Methodology. After observing the water leaks in the tunnel were analyzed waterproofing materials and manufacturability of its device for waterproofing tunnels; The basic requirements for the waterproofing materials and reasons leading to the loss of its credibility. Findings. We were summarized indicators of waterproofing materials and manufacturability of its device for waterproofing tunnels. Also provided are methods, measures and technologies to improve the reliability of waterproofing of structures under different types of material elements and different geological conditions. It is concluded that the recovery of the construction tightness of 4-5 times the cost of maintenance work or work to maintain the tightness of the tunnel. Originality. Using a variety of technologies for repair tunnels allows you to restore operational status and ensure the reliability of tunnel waterproofing during further operation of the tunnels. Practical value. Using analytical and practical experience in the operation and management of structural design frames waterproofing tunnels and separate units.
SUBSTANTIATION OF CONCEPTS OF SUBGRADE’S STRENTHENING IN UKRAINE AND THE EUROPEAN UNION
Authors: DUBINCHYK O. I. , MIROSHNYK V. А. , TIUTKIN O. L.
Published: December 2023

Purpose. Substantiating the concepts of subgrade’s strengthening in Ukraine and the European Union. In the work, based on the experience gained in the field of increasing the strength and stability of objects constructed from the soil, based on the ranking of parameters, the hypothesis about the greatest effectiveness of vertical strengthening elements, unlike all others, in the case of transition to a combined track (1520/1435 mm) is proven. Methodology. The options for strengthening the subgrade with geotextile or geogrid, as well as a rigid layer, are considered, as regulated by CP-0204 "Rules for the arrangement of the main subgrade site during major repair and modernization of the track". Three concepts of strengthening developed and implemented in the European Union with the help of: 1) geosynthetic materials; 2) vertical piles or micropiles; 3) combinations of geosynthetic materials with piles (Geosynthetic-Reinforced-Pile-Supported) are analyzed. Findings. The ranking of the methods of strengthening the subgrade was carried out according to positive and negative parameters that characterize the situation of placement of reinforcement elements in the soil matrix. Reinforcement parameters are divided into positive (reduction of horizontal and vertical deformations) and negative (technology parameters). It was determined that the maximum value of the positive impact on the reduction of vertical deformations is provided by options of vertical piles or micropiles created on the basis of Boring and Mixing Technology or Jet-grouting. Originality. For the first time, on the basis of the ranking formulas for positive and negative parameters, the justification of the concepts of subgrade’s strengthening in Ukraine and the European Union was performed. Practical value. Any method of strengthening can be ranked before its practical implementation. That is, its efficiency and rationality can be determined during implementation in specific situations of railway operation, with subgrade that needs strengthening.
ORGANIZATIONAL AND TECHNOLOGICAL PARAMETERS OF CLAY SOIL MIXING TECHNOLOGY
Authors: MISHUK K. M.
Published: December 2023

Purpose. Strengthen the effectiveness of the use of jet and mechanical methods for the preparation of soil-cement reinforcing elements as a factor of increasing efficiency based on the identified interdependencies between technological parameters and other displays of technology. Methodology. Drilling mixing technologies for the production of soil-cement reinforcing elements in industrial and industrial practice are based on clay mechanical and jet methods, which pose significant problems. An assessment of the technical indicators of both technologies has revealed consistent directions for achieving the highest targets. Research in a sufficient amount of the world supports the practice of producing soil-concrete elements in casting machines, for which the laboratory has specially designed and prepared experimental equipment. It’s obvious working parts are to cut the soil with knives and air-cement jets and mix the mixture thoroughly. The pouch exhibits transport and cutting functions of various parameters. According to the indicators of the importance of soil concrete and changing the beam of the molded element, the effectiveness of the method in the presence of a mass of cement injected into the soil and cutting was determined. The dimensions of the element were established after hardening the soil concrete with a stretch of 28 inches in the first place in the soil with subsequent digging, vibrating, and testing for the purpose. Findings. The advantages of the technology of mechanical clay preparation of elements have been established due to the simplified and accessible technology, but the relatively small span of soil-concrete moldings changes the efficiency of the method. Jet technologies give the elements a great grip, but require a unique use of a high vice. Both technologies create low-value soil concrete through varying amounts of water. Originality. The combination of mechanical and jet-powered equipment in one drilling allows for the accumulation of obvious resources, which allows you to put a few technologies into the bag, remove soil-concrete elements of moving indicators. news and productivity. There are also problems with regulating cement and water mixing. Practical value. Based on these steps and the identified optimal cut of the wind jet, the value of soil concrete increases to 12...16 MPa and the span of the elements increases by 120...140 mm.
Synthesis, Characterisation and Microbial Activity of 2-(1H-benzothiazol-2-yl) Thioacetic acid with some Bivalent Metal Ions
Authors: Ali Irshad , Farooq Faisal , Wara Md Khairul , Raj Rudhima
Published: December 2023

The complexes of the potassium salt of 2-mercaptobenzthiazole with potassium salt of 2-chloroacetic acid in aqueous dioxane at reflux temperatures result in the formation of potassium salt of 2-(1H- benzolthiazol-2-yl) thioacetic acid (K C9 H6 NO2 S2
=KL). The Ligand KL forms stable complexes with bivalent metal chloride in aqueous ethanol to form bisligated complexes [ML2 ]nH2 O [(M=Co(II), Ni(II), Mn(II), Cu(I), Zn(II), or Cd(II) and n=o, 2 or 4)]. The Magnetic susceptibility and electronic spectral studies of Co(II),
Mn(II), Ni(II), and Cu(II) complexes resemble their octahedral or distorted octahedral structure of these metal ions. The i. r spectral bands positions of complexes indicated that benzothiazole part of the ligand is not involved in coordination. The antifungal activity of ligand and its complexes
were examined by cup and disc method. The results do not show appreciable antifungal activity examined by cup and disc method. The results do not show appreciable antifungal activity examined on fungi. The thermal stability of complexes indicated that two water molecules in Co(II), Ni(II)
Cu (II) and Mn(II) Complexes [ML2 (H2 O)2]2H2 O are present in coordination sphere.
Characterization of PhaP Protein from Bacillus thuringiensis serovar indiana using software tools
Authors: Basak Anindita
Published: December 2023

Phasins (PhaP) are proteins normally associated with granules of polyhydroxyalkanoates (PHA), a biodegradable polymer accumulated by many bacteria as a reserve molecule. Physicochemical characteristics and experimental structure of Phasins are not yet available in the Protein Databank
(PDB). Apart from their structural role as part of the PHA granule cover, different structural and regulatory functions have been found associated to many of them, and several biotechnological applications have been developed using phasin protein fusions. Despite their remarkable functional
diversity, the structure of these proteins has not been analyzed except in very few studies. In this work, homology modeling approach was employed to derive structures for these proteins. A program meant for comparative modelling Phyre2 was utilized for the purpose. Expasy's Prot-param server
and Cys_rec tool were used for physicochemical and functional characterization of these proteins.