Litteris et Artibus

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3D seismic velocity models distribution for complete complex of processing and interpretation of seismic data in Dnieper-Donets Basin
(Lviv Polytechnic Publishing House, 2015) Petruniak, V.; Ustenko, I.; National Taras Shevchenko University of Kyiv
VSP data processing workflow for determining of velocity model is being reviewed in the paper, which can be used for processing of seismic data. Optimal graph of seismic data processing is proposed. The graph contains all the optimal procedures, which allows obtaining seismic images of high quality. Seismic images, obtained after processing, were used for seismic interpretation, which helped to specify geological structure of the prospects in the cutoff part of the Dnieper-Donets Basin.
A fitted numerical method for singularly perturbed integro differential equations with delay
(Видавництво Львівської політехніки, 2017-12-23) Erdogan, Fevzi; Sakar, Mehmet Giyas; Yuzuncu Yil University, Faculty of Sciences, Department of Mathematics, Van, Turkey
This study deals with the singularly perturbed initial value problems for a quasilinear first-order integrodifferential equations with delay. A numerical method is generated on a grid that is constructed adaptively from a knowledge of the exact solution, which involves appropriate piecewise-uniform mesh on each time subinterval. An error analysis shows that the discrete solutions are uniformly convergent with respect to the perturbation parameter. The parameter uniform convergence is confirmed by numerical computations.
A history of public art
(Lviv Polytechnic Publishing House, 2015) Kyselyova, Alla; Odessa State Academy of Building and Architecture
This article describes the genesis of public art and its development.
About problem of absorption of greenhouse gas by chlorophyilsynthesizing microalgae in the presence of sulfur dioxide
(Видавництво Львівської політехніки, 2017-12-23) Dyachok, Vasyl; Katysheva, Viktoriia; Lviv Polytechnic National University
The presence of non-competitive reverse inhibition by sulfur dioxide in the process of photosynthesis based on the Lineweaver-Burk theory was theoretically justified and experimentally proved. The mathematical description of the growth of the cells of the microalgae is given and as a result of processing experimental data the growth rates of the algae at certain values of inhibitor concentration was defined. Based on the obtained values the analytical dependence of growth rate of biomass from the substance of inhibitor was redused. The maximum value of concentration of sulphur dioxide which may occur photosynthesis and biomass growth of microalgae was set.
Activation of alcohol yeast
(Видавництво Львівської політехніки, 2017-12-23) Palianytsia, Liubov; Berezovska, Natalia; Kosiv, Ruslana; Pikh, Zorian; Kharandiuk, Tetiana; Lviv Polytechnic National University
The influence of alcoholic yeast treatment with electrochemically activated water (EAW) on their enzymatic activity in the fermentation and generation, improve their physiological state was investigated. The obtained results showed that catholyte has the greatest effect on alcoholic yeast activity. The use of electrochemically activated water in alcohol production can reduce the duration of the biotechnological process and increase the finished product yield.
Actual ecologically friendly solving of problem of municipal sludge
(Lviv Polytechnic Publishing House, 2016) Kalinichenko, Kira; Nikovskaya, Galina; Ulberg, Zoya; F. D. Ovcharenko Institute of Biocolloidal Chemistry
A new eco-friendly process for rational utilization of toxic municipal sludge wastes by their transformation into fertilizer for land application has been developed. It includes promotion of alkaline vector of heterotrophic microbial metabolism in high stable biocolloidal sludge system by adding special nutrients, heavy metals leaching and sludge suspension separating under the action of microbial metabolites. Each of the phases (sediment and bioextract) can serve as a fertilizer after procedure of additional stabilization. The fertilizers obtained satisfy the EU limits for the materials of agricultural utilization. The vegetation experiments have shown that the fertilizer application results in tenfold increase of plant harvest and provides high quality of target product.
Actual trends of projects financing at early stages
(Lviv Polytechnic Publishing House, 2015) Roman’ko, Anastasia; Ivanyuk, Alexandra; Galushko, Olena; State Higher Education Establishment “Pridneprovsk State Academy of Civil Engineering and Architecture”
The paper is devoted to the current trends of financing small and medium-sized businesses at the early stages of development. Expected and real sources of financing are discussed. Internal and external problems of start-ups development are analysed.
Adsorption of Cu2 + and Cr3 + cations by modified sorbents
(Видавництво Львівської політехніки, 2017-12-23) Sabadash, Vira; Habuda, Alina; Gumnitsky, Yaroslav; Lviv Polytechnic National University
The present article substantiates the theoretical bases of adsorption of heavy metals on modified adsorbents. The aim of this work was to study the simultaneous adsorption of copper and chromium cations on the surface and in the zeolite volume under static conditions. The regularity of the change in the amount of absorbed copper and chromium cations by a zeolite in the initial solution was established. It was settled the chromium ions were better adsorbed on zeolite modified by phosphoric acid. It was established that adsorbents modified in acid conditions were more selective to heavy metals then zeolites modified by NaOH.
Advantages of the petroleum system concept
(Lviv Polytechnic Publishing House, 2016) Petruniak, Vasyl; Petrokushyn, Oleh; Taras Shevchenko National University of Kyiv
Unique hybrid modeling technology of hydrocarbon migration allows to create a detailed high accuracy model, based on complex physical transformations. This technology assures the most accurate solution of the main modeling problem, dependency between the competence of geological record and inrush of the sealing horizon. It also far exceeds methods that are based on flow pattern of the fluid by Darcy’s law.
Agricultural products in the international market
(Видавництво Львівської політехніки, 2017-12-23) Moiseenko, Darya; Mushyn, Ivanna; Golovko, Liliya; Oles Honchar Dnipro National University
Authors shown the basic direction of agricultural product in the international market. The result of researche is the strategic priorities of the raw orientation of Ukrainian exports shows its sensitivity to fluctuations in prices in the world market.
Algorithm for calculating the natural gas flowrate with taking into account the roughness measured in real time
(Lviv Polytechnic Publishing House, 2016) Chaban, Bohdan; Lesovoi, Leonid; Lviv Polytechnic National University
The calculation of gas volume flow, reduced to standard conditions, using differential pressure method, was analyzed. New algorithm for calculating natural gas volume flow, reduced to standard conditions, considering the equivalent roughness of the internal surface of the measuring pipeline, measured in real time, was obtained. It will allow to increase the accuracy of measuring natural gas volume flow by differential pressure method.
Algorithmic method of precision enhancement of paper pulp blade consistometers
(Lviv Polytechnic Publishing House, 2016) Romaniuk, Oleksandr; Kril, Bohdan; Kril, Danylo; Kokoshko, Roman; Lviv Polytechnic National University
The algorithmic method of precision enhancement of the paper pulp blade consistometers is considered. In the said method the current strength in winding of the moving coil of the magnetoelectric transducer in the steady regime of sensor`s blade motion condition is measured during its movement in downstream and upstream directions. By processing this data the errors, caused by the influence of the moving medium on the consistometer sensitive blade can be considered and excluded.
An inclusive preschool education as the basis of inclusion in the system of education
(Lviv Polytechnic Publishing House, 2015) Fedan, Yaroslav; Lviv Polytechnic National University
Presented inclusive education in public administration education as a necessary element for the development of inclusive education. The importance of multilevel support and assistance during educational process in the redevelopment of the school, classes, programs and activities in order to all students without exception trained and spent time together is discussed.
Analysing online customer experience with tripadvisor: the case of Konya
(Lviv Polytechnic Publishing House, 2016) Alper Ateş; Ceyhun Çağlar Kılınç; Halil Sunar; Selcuk University
The number of participants to tourism activities are rapidly increasing. In this conjuncture, internet visitors are exploring the destinations before they visit. Applications and web sites that shared experience of visitors become more important. The aim of this study is how can we use tripadvisor for Konya destination with use its comments and advises about best prices, hotels and social activities. There are about 9176 comments has been made until the date of 03.16.2016 for Konya Destination. As samples from 71 locations under the title of places to visit in Konya, we chose 5 destination which get top points from the users.
Analysis and classification of historical-oriented Internet sources
(Lviv Polytechnic Publishing House, 2015) Peleschyshyn, Andriy; Bilushchak, Тetiana; Lviv Polytechnic National University
The article analyzes the online sources with historical information available there. The Internet sources are analyzed according to the groups and types of information they contain.
Analysis of architectural influence factors on social spaces of shopping malls
(Lviv Polytechnic Publishing House, 2016) Berezko, Olena; Lviv Polytechnic National University
In this paper the most influential architectural factors on social spaces of shopping malls are considered.
Analysis of archival cartographic materials for the modeling of digital terrain model of the Lviv city landfill during 1988-2008
(Видавництво Львівської політехніки, 2017-12-23) Lozynskyi, Viktor; Lviv Polytechnic National University
Made selection archival cartographic materials for further modeling of the digital terrain model of Lviv city landfill.
Analysis of coke gas properties at operation of its metering systems
(Lviv Polytechnic Publishing House, 2016) Dzhyhyrei, Viktor; Matiko, Fedir; Lviv Polytechnic National University
The generalization and analysis of coke oven gas composition using the data of literary sources and coke enterprises are carried out in the paper. The range of pressure and temperature of coke gas during transportation is defined. The physical properties of coke gas (density, compressibility factor, adiabatic index, dynamic viscosity) that are the part of the equation of gas flowrate by method of variable differential pressure are investigated in the defined range of pressure and temperature. 25 gas mixtures with different composition were synthesized in order to make the analysis of dependency of physical properties versus pressure, temperature and composition of the mixtures. According to the results of the research the recommendations for the development of simplified methods for calculating the physical properties of coke oven gas are made.
Analysis of experimental researches of wood gasification process in a continuous layer
(Видавництво Львівської політехніки, 2017-12-23) Lys, Stepan; Rymar, Tetyana; Yurasova, Oksana; Bura, Mykhaylo; Lviv Polytechnic National University
For today are known quite a bit methods redoing of wood and its wastes in energy, but one of the most perspective is gasification. The construction of the gazogene, on which the row of experiments is conducted with the aim of determination of conformity to law of influence of entrance factors which influence on the process of gasification and on quality of synthesis-gas, was worked out for this purpose. The statistical processing of experimental data enables to define the optimal parameters of work a gazogene.
Analysis of factors which define time losses in traffic flow
(Видавництво Львівської політехніки, 2017-12-23) Bura, Romana; Davosyr, Vladyslav; Lviv Polytechnic National University
Reviewed geometric and planning road network parameters which impact on delays of movement in traffic flows, and also organizational questions, connected with them. Analyzed factors, which reduce vehicular speeds and encourages traffic jams generation.