bluuebunny/crossref_metadata_2025_split huggingface dataset:
Determining the influence of structural and operational parameters of a double bearing on the thickness of its disc
Authors: Nazin Vladimir 
Published: July 2021

This paper describes the main advantages of hydrostatic dynamic bearings of the double type, which have several lubricant films. It is indicated that they have an increased carrying capacity, by 1.8 times, and an extended range of stable operation, by 1.5 times, compared to conventional sleeve bearings with one lubricating film. The importance of determining the thickness of the bearing disk has been demonstrated, as it affects its durability. The goal was to investigate the impact of changes in the operational and structural parameters of a double bearing on the thickness of its disk. A sequence for determining the disk thickness has been proposed, including a joint solution to Reynolds equations, the balance of work fluid flow rate, as well as determining the loads acting on a bearing disk, which makes it possible to rationally assign the thickness of the bearing disk. The most common and effective methods of successive approximations have been used in the numerical implementation of Reynolds equations and flow rate balances. The action of centrifugal forces caused by the rotation of the disk has been taken into consideration in determining the total load acting on the bearing disk. The bending strength of the bearing disk was considered under its exposure to the total load. It was noted that due to the high flow rate of the working liquid pumped through the bearing, and the small change in the temperature of the liquid inside the bearing, the temperature deformations of the disk were not taken into consideration. The magnitude of change in the thickness of the double bearing disk has been determined, caused by the action of centrifugal forces in the examined range of angular speeds of the disk's rotation with the shaft.
The reported results could be especially useful in the design of rotor supports for nuclear power plants where bearings have large dimensions, as well as for other units in power plants.
Development of the method for encoding service data in cryptocompression image representation systems
Authors: Barannik Vladimir , Sidchenko Serhii , Barannik Natalia , Barannik Valeriy 
Published: July 2021

The demand for image confidentiality is constantly growing. At the same time, ensuring the confidentiality of video information must be organized subject to ensuring its reliability with a given time delay in processing and transmission. Methods of cryptocompression representation of images can be used to solve this problem. They are designed to simultaneously provide compression and protection of video information. The service component is used as the key of the cryptocompression transformation. However, it has a significant volume. It is 25 % of the original video data volume. A method for coding systems of service components in a differentiated basis on the second cascade of cryptocompression representation of images has been developed. The method is based on the developed scheme of data linearization from three-dimensional coordinates of representation in a two-dimensional matrix into a one-dimensional coordinate for one-to-one representation of this element in a vector. Linearization is organized horizontally line by line. On the basis of the developed method, a non-deterministic number of code values of information components is formed. They have non-deterministic lengths and are formed on a non-deterministic number of elements. The uncertainty of positioning of cryptocompression codograms in the general code stream is provided, which virtually eliminates the possibility of their unauthorized decryption. The method provides a reduction in the volume of the service component of the cryptocompression codogram. The service data volume is 6.25 % of the original video data volume. The method provides an additional reduction in the volume of cryptocompression representation of images without loss of information quality relative to the original video data on average from 1.08 to 1.54 times, depending on the degree of their saturation
Development and visualization of the computer loadıng plannıng model for the cargo aırcraft
Authors: Sahun Yelyzaveta , Zalevskii Anatoliy , Chornohor Natalya , Sikirda Yuliya 
Published: July 2021

Loading an aircraft is an extremely complex process with many variable aspects that determine the planning of each flight separately. The article is devoted to the development of an algorithm and a computer model for planning the loading of a cargo ramp aircraft in a multi-lag route. The essence of the algorithm consists in a predetermined arrangement of cargo containers relative to the cargo compartment, taking into account the general limitations of the aircraft and the priority of the cargo, which directly affects the planning of loading in a multi-lag route. The use of a visualized computer model created on the basis of the algorithm can reduce the average time of loading operations for a number of direct flights by almost 7 %, and on multi-lag flights by 12 %.
Implementation of the model in the activities of an air carrier avoids a situation where certain criteria and restrictions entail sorting «manually» by all indicators, which is very time-consuming in the context of the urgency of servicing the aircraft at the airport.
The visualized load planning computer model enables flight planning personnel to make faster decisions and predict additional load on other sections of the route.
The successful application of the model to the airline’s operations contributes to the efficiency and safety of ground handling services. This contributes to the intensification of the use of the aircraft fleet by increasing the speed of commercial cargo handling.
In the future, the computer model can serve as the basis for a rule-based expert system in order to prevent containers from being overloaded at intermediate sections of the route
Studying the effect of the developed technology on the chemical composition of yogurt made from camel milk
Authors: Dikhanbayeva Fatima , Zhaxybayeva Elmira , Dimitrov Zhechko , Baiysbayeva Meruert , Yessirkep Gulmira , Bansal Nidhi 
Published: July 2021

This work aimed to conduct a comparative analysis that helps to identify the effect of the developed technology on the chemical composition of drinking yogurts made from Australian and Kazakhstani dromedary camel milk.
Camel milk taken from Kazakhstan and Australia has been processed into drinking yogurt and its amino, fatty acid, vitamin, and mineral content was assayed. These identifications enabled us to compare how our developed technology is suitable for both milk types.
The results of determination can be interpreted as follows. The essential and non-essential amino acid content in Kazakhstani yogurt was significantly higher compared to Australian yogurt. Aspartic and Glutamic acids were not identified in Kazakhstani yogurt. As a counterpart, Lysine and Histidine were not found in Australian yogurt.
The fatty acid results demonstrated that Linoleic acid in Kazakhstani yogurt was significantly higher than in Australian yogurt, and there was more Linolenic acid in Australian yogurt than in Kazakhstani yogurt. The atherogenicity index for Kazakhstani yogurt was at a low level (0.045 %) compared to Australian yogurt (1.90 %). The ratios of omega 6 and omega 3 in Kazakhstani yogurt were 16 % greater than in Australian yogurt.
Thiamine level in Kazakhstani yogurt was lower compared to Australian by up to 57 %. However, Riboflavin results in both samples were identical. The Calcium, Potassium, Sodium, and Phosphorus contents in Australian yogurt are defined as 5, 34, 34, and 30 % respectively compared to Kazakhstani yogurt. Nevertheless, Magnesium (47 %) and Iron (60 %) levels were lower in Australian yogurt than in Kazakhstani yogurt.
These study results could be useful as preliminary work for scientists and producers of gerodiet products, who intend to work with camel milk as a geroprotector
Investing in the development of information infrastructure for technology transfer under the conditions of a regional market
Authors: Zinchenko Olha , Finahina Olesya , Pankova Liudmyla , Buriak Ievgen , Kovalenko Yuliia 
Published: July 2021

The relevance of the issue, related to building an information infrastructure of technology transfer, is predetermined by the transformation of information into the most important resource of technological cooperation. At the same time, its effective functioning requires investment support on a regular basis. This paper addresses the establishment of regularities in the process of investing in the development of the information infrastructure of technology transfer and determining the rational volumes of these investments. This study was carried out in the context of the regional market, which is due to the territorial specificity of market processes, the peculiarity of information interaction among economic agents in a separate market.
The study results have identified the following patterns: the lower the transaction costs of technology transfer participants, the more productive the functioning of the information infrastructure; the more active the cooperation between the participants of technology transfer, the more investment revenues in the development of this infrastructure. Taking into consideration these patterns, a simulation model of the process of investing in the development of the information infrastructure of technology transfer has been built.
The proposed model was tested using an example of the real estate market in the Prydniprovskyi economic region of Ukraine. As a result of the simulation experiment, the optimal level of costs for the development of the information infrastructure for technology transfer has been established. It makes up 20 % of all available investment funds in this market. The proposed model could be adapted for other regional markets.
The results of this study could be useful for the system of state and regional management since they substantiate the directions of innovation policy formation and promote the development of technology transfer under the conditions of certain territorial systems
Improvementof the computer model of air pollution estimation due to emissions of stationary sources of airports and compressor stations
Authors: Zaporozhets Oleksandr , Synylo Kateryna , Karpenko Sergii , Krupko Andriy 
Published: July 2021

Emission sources at airports and compressor stations have the potential to emit pollutants, the effects of which can degrade local air quality. In most cases, the basis of gas pumping units includes either aircraft engines that have exhausted their flight life, or their targeted modifications to fulfill the tasks of gas pumping units and compressor stations in various gas transportation systems.
The methodology for calculating the concentration of pollutants contained in the emissions of enterprises does not take into account all possible features of emission sources, in terms of passive stationary sources and cold emissions, the algorithm of the methodology requires clarification and the justifications given in the article indicate possible ways of clarification.
According to the decision of the CAEP SG-2020 Coordination Meeting "detailed documentation for the Ukrainian POLEMICA air quality model provided in CAEP / 12-FESG-MDG / 2-WP / 09 should be considered as the final documentation for verifying this model for compliance with ICAO document 9889 requirements" ... The results of calculating the maximum concentration for the test scenario using Gaussian models, verified in CAEP, differ by almost 2 times. A similar result according to the PolEmiCa model ~ 1.5 μg/m3 is almost two times less, which is due to the inclusion of the effects of the initial rise in the emission of the mixture from a stationary source into the algorithms of the OND-86 method
Use of tetracyclines and sulfonamides for the treatment of infectious diseases in animals
Authors: Kosenko Yuri , Bilous Svitlana , Ostapiv Natalia , Zaruma Lyubov 
Published: July 2021

The use of antimicrobial medicines in human and veterinary medicine has led to the problem of the development of acquired antimicrobial resistance, which causes a global threat. Were described principles of tetracyclines and sulfonamides use, which are the most common among antimicrobial substances in veterinary medicinal products for the treatment of infectious diseases of food-producing and domestic animals.
The aim. To substantiate the clinical relevance of antimicrobial veterinary medicinal products containing tetracyclines and sulfonamides+trimethoprim in veterinary medicine.
Materials and methods. Research materials: sales reports of antimicrobial veterinary medicinal products in Ukraine for 2015–2019, EU countries, and the USA. Methods used: written and electronic survey; bibliosemantic, analytical and generalization.
Results and discussion. As a result of the annual monitoring for 2015–2019 sales volumes in Ukraine, it was determined that tetracyclines (29.5–37.91 %) and sulfonamides + trimethoprim (12.1–18.7 %) were most often used in the composition of veterinary medicines. The same trend regarding the use of these classes of antimicrobials exists in many countries around the world. Factors determining the clinical relevance of these groups of substances are based on the criteria for their selection.
The principle proposed by the EMA for the choice of antimicrobial veterinary medicinal products is based on the following criteria: categories of target animal species; treatment indications; the route of administration; the type of pharmaceutical formulation; the choice of a dosage regimen. Following this principle was substantiated the feasibility of tetracyclines and sulfonamides+trimethoprim use in veterinary medicine.
By pharmacokinetic and pharmacodynamic parameters evaluated the rationality of the choice of antimicrobial veterinary medicines.
Conclusions. The study revealed clinical efficacy and safety of tetracyclines and sulfonamides+trimethoprim as Veterinary Critically Important Antimicrobial Agents of Category D “Prudence”
O PLANEJAMENTO DOS INSTITUTOS FEDERAIS (IF): VALORES INSTITUCIONAIS E DOCUMENTOS NORTEADORES
Authors: Silva Claudio Nei Nascimento da , Castilho Mara Lucia 
Published: July 2021

Aborda alguns pressupostos a serem observados para a fundamentação do planejamento institucional nos IF. Apresenta um panorama acerca do planejamento institucional dos IF, a partir do levantamento no site destas instituições dos Planos de Desenvolvimento Institucional (PDI), Projetos Pedagógicos Institucionais (PPI) e Projetos Político-Pedagógicos (PPP). Analisa os valores que alicerçam as ações destas instituições, percebendo como esses valores se articulam em rede. O trabalho finaliza com considerações acerca dos fundamentos que explicam a especificidade dos IF, da necessidade de dupla documentação para fins de planejamento institucional e da noção de rede que o conjunto destas instituições pressupõe.
Overlapped joints in Textile Reinforced Concrete with UHPC matrix: An experimental investigation
Authors: Rossi Edoardo , Randl Norbert , Harsányi Peter , Mészöly Tamás 
Published: July 2021

AbstractWhen producing a Textile Reinforced Concrete structure or element, joining separate textile layers might be a necessity, driven for example by the limited dimensions of commercially available fabrics. A possible way of producing such joints is by overlapping different textile sheets. Overlapped joints, however, need to be cast with particular attention since they might represents weak elements of the structure, leading to premature failure. An experimental campaign was performed, aimed at identifying the effects of a symmetric vs non-symmetric arrangement of the textile fabrics within the overlapping length and tensile characteristics of the matrix on such type of joints. Fifteen specimens, produced using a fully epoxy impregnated carbon textile fabric and an Ultra High Performance Concrete (UHPC) matrix, were tested under tension in a uniaxial setup and measurements were performed using a Digital Image Correlation system. The in-plane and out-of-plane behaviour of each specimen was studied. The results highlight the importance of producing symmetric elements as well as the beneficial effects that the admixture of short dispersed steel fibres to the cementitious matrix provide to such kind of joints
Analysis and comparison of metal-doped on Graphene-Genistein using QM/MM calculations
Authors: Alihosseini Afshar , Choupani Marziyeh , Monajjemi Majid , Sakhaeinia Hossein 
Published: July 2021

Genistein (5,7,4′-trihydroxyisoflavone) is an isoflavone abundantly found in soy and other legumes and acts as a selective estrogen receptor modulator (SERM). When testing for similar abilities among other flavonoids, it has been found to be a strong topoisomerase inhibitor. Similar to some high-dose chemotherapy drugs, it was strongly toxic to normal cells. In this study, the adsorption of genistein on the surface of exclusive graphene and Ni, Ti, Cr, and Se-doped graphene was theoretically evaluated by means of density functional theory calculation. Initially, we varied the position of genistein from the surface of pristine and decorated graphene by changing the distances between (1-5 Å) and gained the Ead and Egap for each situation. Our calculation indicated that adsorption energies (Ead) of pristine genistein to graphene with Ni decorated graphene, Ti- decorated graphene, and Cr-decorated graphene and Se-decorated graphene are: 954.984, 318.168, 797.480, 946.725, 958.154 kcal/mole, respectively, and the calculated values of adsorption energy in the equilibrium distance (de=3.918OA.) of genistein to Ni-decorated graphene reveal that apparently genistein- Ni-decorated graphene as the most energetically favorable position was correctly selected in comparison with other atom -decorated graphene. In consequence, we explain the density of states (Doss) and frontier molecular orbitals HOMO and LUMO for Ni-decorated graphene and complexes with genistein; therefore, data confirmed that a positive charge of Ni-decorated graphene for nucleophile molecules could be achieved.
Seismic response of a class of alluvial valleys for incidentSHwaves
Authors: Sánchez-Sesma Francisco J. , Chávez-García Francisco J. , Bravo Miguel A. 
Published: July 2021

AbstractAn approximate solution is presented for the surface ground motion on a class of alluvial valleys under incident SH waves. It is based on the existence of a complete family of rays supported by the basin's boundaries. It is approximate, as diffraction is neglected.This method is developed initially for rigid bases and extended to consider deformable boundary and arbitrary incidence angles. Comparison of results with a more rigorous solution shows very good agreement at a much lower computational effort. Time domain results are presented for different property contrasts and incidence angles.The method is suited to study time domain resonse of a family of alluvial deposits, due to its low cost and practically no upper frequency limit.
Shallow structure effects on broadband teleseismic P waveforms
Authors: Owens Thomas J. , Crosson Robert S. 
Published: July 2021

Abstract
The first 5 sec of source-equalized P-wave receiver functions from an array of broadband portable instruments located about 50 km from the coast in western Washington are strongly influenced by very shallow structure (depths less than 3 km). These data display behavior associated with a dipping, high-velocity contrast interface at shallow depths. The direct P wave and the P-to-S converted phase vary strongly with backazimuth producing an apparent delay in first arriving energy at western backazimuths. These patterns are attributed to a shallow contact between low-velocity sandstones at the surface and an underlying high-velocity volcanic unit. This shallow structure influences even the original unprocessed teleseismic P waves, suggesting that such shallow structure could affect other studies, such as seismic source analysis, utilizing broadband data.
On the use of P-wave seismograms to identify a double-couple source
Authors: Pearce R. G. , Hudson J. A. , Douglas A. 
Published: July 2021

Abstract
We examine the likelihood of observing different values of the relative amplitude of P, pP, and sP on an earthquake seismogram, given that the source is a point double couple at a known teleseismic distance, with an unknown orientation and every orientation equally likely. A display referred to as a compatibility plot is devised to show the probability density of seismogram types over the complete range of amplitude ratios and is computed for seismograms observed at selected source-receiver distances. These plots show in a quantitative way that the occurrence of seismograms from a double-couple source is highly nonuniform within the range of amplitude ratios and that, for many of the ratios, seismograms are not generated for any orientation. It is thereby concluded that individual teleseismic relative amplitude observations can provide powerful evidence for or against the validity of the double-couple assumption. Differences in, for example, source layer velocity and above-source velocity structure are shown to have only a limited effect, so that real data can provide valuable measurements, even when appropriately wide error bounds are placed on the relative amplitudes to allow for all sources of uncertainty. A pronounced linear concentration of probability density is identified on some compatibility plots, and its existence is verified analytically.
Identification of multiple underground explosions using the relative amplitude method
Authors: Clark R. A. , Pearce R. G. 
Published: July 2021

Abstract
The relative amplitude method is applied to the few available good quality teleseismic P-wave seismograms from five presumed double nuclear explosions and one known multiple chemical explosion, under the “naive” assumption that the observed multiple arrivals correspond to P, pP, and sP from a single earthquake—an interpretation which is indeed consistent with the body-wave arrival time data in most cases. The purpose is to investigate the ability of relative amplitudes to identify correctly such multiple events for which established discrimination criteria may give earthquake-like or ambiguous results. For five of the examples, observed relative amplitudes from only four azimuthally well-distributed array seismograms are sufficient to exclude the single-earthquake interpretation. Deliberate attempts to simulate earthquake teleseismic P wave-forms using multiple explosions are restricted to simulation studies, and one of these is analyzed here using the same approach. We conclude that relative amplitudes can act as a valuable aid to source discrimination in cases where complexity gives rise to fallibility of conventional discriminants, even where only a small number of well-distributed teleseismic short-period array seismograms are available, their signal-to-noise ratios being maximized by suitable array design and careful choice of array site. The network need not be dense, since closely spaced observations of the focal sphere generally embody a large measure of redundancy.
Elastic finite-difference modeling of cross-hole seismic data
Authors: Hu Liang-Zie , McMechan George A. , Harris Jerry M. 
Published: July 2021

AbstractCross-hole seismic data exhibit unique characteristics not seen in surface survey data or even in vertical seismic profile data. These are, to a large extent, due to the near-horizontal propagation involved. Transmitted, reflected, evanescent, guided, and converted waves are all prominent; these require an elastic algorithm for realistic simulation. Elastic finite-differences are used to synthesize responses (both fixed-time snapshots and seismogram profiles) for a series of two-dimensional models of increasing complexity. Special emphasis is given to guided waves in continuous and segmented low-velocity zones.