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Research of the Pulsating Flow of Drilling Fluid in the Drill String Image
Journal article

Research of the Pulsating Flow of Drilling Fluid in the Drill String

Design and Construction of A Desiccant Air Dryer for Seeds and Vegetables Image
Journal article

Design and Construction of A Desiccant Air Dryer for Seeds and Vegetables

Research of the Pulsating Flow of Drilling Fluid in the Drill String Image
Research of the Pulsating Flow of Drilling Fluid in the Drill String Image
Journal article

Research of the Pulsating Flow of Drilling Fluid in the Drill String

Design and Construction of A Desiccant Air Dryer for Seeds and Vegetables Image
Design and Construction of A Desiccant Air Dryer for Seeds and Vegetables Image
Journal article

Design and Construction of A Desiccant Air Dryer for Seeds and Vegetables

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Analysis of the Experimental Ballast Water Treatment System Image
Journal article

Analysis of the Experimental Ballast Water Treatment System

The object of research is the experimentally created model of the accompanying ballast water treatment systems (BWTS) at the Danube Institute of the National University «Odessa Maritime Academy». (Izmail, Odessa region, Ukraine). The study is aimed at assessing the compliance of ballast water quality standard D-2 ballast water operational cycles by disinfection and purification. One of the most problematic places of the presented research is the renewal (acquisition) of a separate node segmentation of the experimental BWTS with attraction of certain material support (investment). In particular, it is the scaling of BWTS, presentation in the state market of Ukraine, abroad (competition), qualitative assessment, certification at the level of the Ukrainian Sea Ports Administration (USPA), the register of maritime shipping. Elimination of the above «problem-tasks» will contribute to the collective research support, opinion and effective steps of professionals-researchers, in particular, in the maritime industry (experts IMO – International Maritime Organization, professors, academicians TAS – Transport Academy of Sciences). Also, compatible contribution of significant research results to separately oriented projects (European, Ukrainian) with attraction of investors, mentors, maritime industry business. The research used modern practices of design of such accompanying BWTS, referring to innovative methods, methodologies of global production of such structures of famous world brands, for example, Alfa Laval, Wartsila, OceanSaver, Hyde Marine, Industrie de Nora, etc. Researchers have qualitatively and consistently studied the generally accepted series of technological processes for ballast water treatment, observing classical according to the analytical review of literature sources and in the modern coverage (state) of similar stages of ballast water decontamination/cleaning. Qualitative expression of the received result is a number of conducted researches of disinfection/purification of sea outboard water in laboratory conditions on experimental BWTS. Thanks to the latter the reliability of the presented data is provided, which coincide (are identical) with trustworthy, established by the BW quality standard D-2, that are specified in discussion and conclusion of the given work.
Practical Use of Dry Magnetically Controlled Biosorbent in Purification System of Domestic Sewage Image
Journal article

Practical Use of Dry Magnetically Controlled Biosorbent in Purification System of Domestic Sewage

The object of research is domestic sewage of sewage treatment facilities in Slavutich (Ukraine) and sorption capacity of the new dry magnetically controlled biosorbent (MCB) in relation to conventional pollutants of domestic sewage. The research found that the existing problem in wastewater treatment – exceeding MPD standards for indicators such as COD, ammonia nitrogen, nitrite, total iron, phosphates, smell – can be solved by using dry modified biosorbent obtained by magnetohydrodynamic mixing (MHDM) in crossed electric and magnetic fields. It was also selected optimal dose of dry MCB, which is 4 g/dm3 and optimal biosorption time – 20 minutes. The optimum particle size of dry MCB for effective biosorption is 0,1 mm. Efficiency of removal was determined not only for heavy metal ions by dry MCB on the basis of Sacharomyces CEREVISIAE yeast, obtained by MHDM in crossed electric and magnetic fields, but also for effective removal of such indicators of domestic sewage as: smell, COD, ammonia nitrogen, nitrite, phosphate, total iron.As a result of researches it was found that dry MCB completely neutralizes the smell of sewage from the V points to 0 points. The effect of COD treatment is 48,1 %; ammonia nitrogen – 46,7 %; nitrite – 91,7 %; phosphates – 64,4 %; total iron – 51,7 %.Efficiency of dry MCB is in reduction of concentration of pollutants to MPD level. The advantage of dry MCB, obtained by MHDM in crossed electric and magnetic fields, is in storage and transportation. Research is useful because dry MCB, obtained by MHDM in crossed electric and magnetic fields, can be removed in speed mode using magnetic separation.The results of this research can be used for dose selection of dry biosorbent for wastewater sewage of sewage treatment facilities, where there is a problem with the purification of the above parameters. This will allow treatment facilities to purify sewage water to MPD standards and reduce the negative impact on the reservoir.
Modification of the Boston Consulting Group Matrix in the Strategic Management of an Enterprise Image
Journal article

Modification of the Boston Consulting Group Matrix in the Strategic Management of an Enterprise

Analysis of DSC (Differential Scanning Calorimetry) Thermograms of Milk Fat Image
Journal article

Analysis of DSC (Differential Scanning Calorimetry) Thermograms of Milk Fat

Enterprise Risk Management: Definitions And Understandings Image
Journal article

Enterprise Risk Management: Definitions And Understandings

The Essence of the Concept of Enterprise Competitiveness Image
Journal article

The Essence of the Concept of Enterprise Competitiveness

Modification of the Boston Consulting Group Matrix in the Strategic Management of an Enterprise Image
Modification of the Boston Consulting Group Matrix in the Strategic Management of an Enterprise Image
Journal article

Modification of the Boston Consulting Group Matrix in the Strategic Management of an Enterprise

Enterprise Risk Management: Definitions And Understandings Image
Enterprise Risk Management: Definitions And Understandings Image
Journal article

Enterprise Risk Management: Definitions And Understandings

The Essence of the Concept of Enterprise Competitiveness Image
The Essence of the Concept of Enterprise Competitiveness Image
Journal article

The Essence of the Concept of Enterprise Competitiveness

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Comparison Analysis of Copula\u002Dbased and Markowitz Portfolio Methods Image
Journal article

Comparison Analysis of Copula-based and Markowitz Portfolio Methods

In this paper, the objects of study are securities (stocks) and portfolio.The main problem of the study is portfolio optimization. One of the first portfolio methods was presented by Henry Markowitz with his Modern Portfolio Theory (MPT), which is considered as a classic and the most popular one in modern investing. MPT provides the following assumptions: variance is used as a measure of risk, portfolio stock returns distribution is considered as a normal one. However, these assumptions do not represent real processes in the modern economy. First, in terms of modern volatile economy portfolio stock returns distribution curve has heavy tails, which is not typical for normal distribution. Secondly, in case of variance as a measure of risk probability of extreme events, such as a simultaneous increase or decrease of stock prices, are not taken into account.So Markowitz method no longer meets the requirements of the modern financial market and there is a need to study alternative and more valid portfolio methods.In this paper, copula-based approach is considered in contrast to the classical one. In the method assumption about the normality of stock returns is rejected and Value-at-Risk (VaR) is considered as a valid risk measure. VaR assessment is based on an information about random distribution. Since the normality assumption was rejected, to assess portfolio stock returns distribution need to be defined. To do these copula-functions was used.Stochastic optimization problem using VaR was solved with a modified Nelder-Mead method.As a result of the dynamic optimization return of copula-based portfolio for 2015 was 12,1 % of the initial investment sum, while the portfolio, constructed with the classical method, showed losses of 4,1 %.Since in copula-based approach incorrect normality assumption is rejected and a valid risk measure is chosen, copula-based portfolio is much more effective than the Markowitz one.
Neutralization of Carbon Monoxide by Magnetite\u002Dbased Catalysts Image
Journal article

Neutralization of Carbon Monoxide by Magnetite-based Catalysts

Bifidobacterium Activation in Technologies of Health\u002Dimproving Mayonnaise Image
Journal article

Bifidobacterium Activation in Technologies of Health-improving Mayonnaise

МатЕматичЕскоЕ модЕлированиЕ логистическиХ систеМ промышленныХ предприятиЙ С учетоМ сКидоК Image
Journal article

МатЕматичЕскоЕ модЕлированиЕ логистическиХ систеМ промышленныХ предприятиЙ С учетоМ сКидоК

Neutralization of Carbon Monoxide by Magnetite\u002Dbased Catalysts Image
Neutralization of Carbon Monoxide by Magnetite\u002Dbased Catalysts Image
Journal article

Neutralization of Carbon Monoxide by Magnetite-based Catalysts

Bifidobacterium Activation in Technologies of Health\u002Dimproving Mayonnaise Image
Bifidobacterium Activation in Technologies of Health\u002Dimproving Mayonnaise Image
Journal article

Bifidobacterium Activation in Technologies of Health-improving Mayonnaise

МатЕматичЕскоЕ модЕлированиЕ логистическиХ систеМ промышленныХ предприятиЙ С учетоМ сКидоК Image
МатЕматичЕскоЕ модЕлированиЕ логистическиХ систеМ промышленныХ предприятиЙ С учетоМ сКидоК Image
Journal article

МатЕматичЕскоЕ модЕлированиЕ логистическиХ систеМ промышленныХ предприятиЙ С учетоМ сКидоК

Journal article

The Use of Inert Gases for Storage of White Dry Wines

The Use of Inert Gases for Storage of White Dry Wines Image
Journal article

Analysis of the Pectin Extraction Process at Recycling of Secondary Material Resources

Analysis of the Pectin Extraction Process at Recycling of Secondary Material Resources Image
Journal article

Reasonable Application Analysis of Casnter Graphitization Furnaces According to the Demands of Modern Market

Reasonable Application Analysis of Casnter Graphitization Furnaces According to the Demands of Modern Market Image
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