Model-based prognosis for intergranular corrosion

Among the advantages of Aluminium-based alloys for structural use is their corrosion resistance. However, while Aluminium alloys are highly resistant to uniform (general) corrosion, they are much more susceptible to types of localised corrosion, especially intergranular corrosion, which is a localised attack along the grain boundaries which leaves the grains themselves largely unaffected. In order to estimate the progress of such corrosion in a given sample, it is considered possible to generate a numerical model of some sort. While there has been much effort spent in the development of electrochemistry-based models, the use of grey and black-box models remains largely unexplored. One exception to this is the use of Cellular Automata (CA) models which have recently been exploited to model the progression of uniform corrosion. The object of the current paper is to apply the CA methodology to the case of intergranular corrosion. The first phase of the work has been concerned with generating appropriate CA rules which can qualitatively reproduce observed physics, and this work is reported here. A model is proposed which shows qualitative agreement with experimental data on the advance of the corrosion front

Economic Crisis and its Impact on Land-use of Lowland Drained Landscape in Western Ukraine

AbstractInternal and external economic conditions have significant impact upon agrarian policy, activities and production. In Ukraine they are also associated with rural employment, land-use changes, and natural resources protection. The aim of this paper is to identify economic and environmental impact of economic crisis in agrarian sphere at regional level, focused on ameliorative land-use changes and discover potential of Geographic Information Systems (GIS) in assessment of the phenomenon. The analysis was carried out during 1990-2011 in Volyn’ region in Western Ukraine, region which borders on EU (Poland) and Belarus. The methodology focuses on multidisciplinary approach in order to measure consequences of changes in agricultural production, ecological conditions of lowland drained landscapes before economic crisis and in current situation using SWOT analysis of the system. We also identified strengths and weaknesses of different land-use scenarios to achieve optimal use of opportunities. Mechanisms, actions and innovations for development were analyzed in the article

Dilatational viscosity of dilute particle-laden fluid interface at different contact angles

We consider a solid spherical particle adsorbed at a flat interface between two immiscible fluids and having arbitrary contact angle at the triple contact line. We derive analytically the flow field corresponding to dilatational surface flow in the case of large ratio of dynamic shear viscosities of two fluids. Considering a dilute assembly of such particles we calculate numerically the dependence upon the contact angle of the effective surface dilatational viscosity particle-laden fluid interface. The effective surface dilatational viscosity is proportional to the size and surface concentration of particles and monotonically increases with the increase in protrusion of particles into the fluid with larger shear viscosity

Influence of theoretical approaches of public administration in sports on the formation of the modern sports policy in Ukraine

Lishchuk S. Influence of theoretical approaches of public administration in sports on the formation of the modern sports policy in Ukraine. Journal of Education, Health and Sport. 2015;5(2):281-288. ISSN 2391-8306. DOI: 10.5281/zenodo.17834http://ojs.ukw.edu.pl/index.php/johs/article/view/2015%3B5%282%29%3A281-288https://pbn.nauka.gov.pl/works/561263http://dx.doi.org/10.5281/zenodo.17834Formerly Journal of Health Sciences. ISSN 1429-9623 / 2300-665X. Archives 2011 – 2014 http://journal.rsw.edu.pl/index.php/JHS/issue/archive Deklaracja.Specyfika i zawartość merytoryczna czasopisma nie ulega zmianie.Zgodnie z informacją MNiSW z dnia 2 czerwca 2014 r., że w roku 2014 nie będzie przeprowadzana ocena czasopism naukowych; czasopismo o zmienionym tytule otrzymuje tyle samo punktów co na wykazie czasopism naukowych z dnia 31 grudnia 2014 r.The journal has had 5 points in Ministry of Science and Higher Education of Poland parametric evaluation. Part B item 1089. (31.12.2014).© The Author (s) 2015;This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland and Radom University in Radom, PolandOpen Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non commercialuse, distribution and reproduction in any medium, provided the work is properly cited.The authors declare that there is no conflict of interests regarding the publication of this paper.Received: 20.10.2014. Revised 18.01.2015. Accepted: 25.02.2015. INFLUENCE OF THEORETICAL APPROACHES OF PUBLIC ADMINISTRATION IN SPORTS ON THE FORMATION OF THE MODERN SPORTS POLICY IN UKRAINES. LishchukNational University of Water Management and Nature Resources Use  Summary. The article investigates the influence of theoretical approaches of public administration in sports on the formation of the modern sports policy in Ukraine.Research two models of public administration in sport: liberal model (or "laissez-faire model"), that provides for maximum freedom of self-regulation by the state government and sports organizations and minimize government interference in the affairs of the sport; an interventionist model, which provides for the active intervention of the state in the affairs of sports activities and sports organizations. It proved that Ukraine has an interventionist model.Given the task to the Ministry of Youth and Sports of Ukraine, it should establish a working group at the Ministry of Youth and Sports of Ukraine on the implementation of the learning process of the course devoted to the legal foundations of physical culture and sports as law students and students of universities of physical education and sport. Moreover Syllabus should vary with account available, depending on the direction of training, basic knowledge in the field of physical culture and sports and jurisprudence; spend work to promote information on legal foundations of physical culture and sports use to implement the media, organize conferences on legal issues in the field of physical culture and sports, pay attention to the development of textbooks on the subject, etc; create a system of training of lawyers with specialization in the field of physical culture and sports. Keywords: Physical Education and Sports, the mechanisms of state regulation of physical culture and sports in Ukraine, public policy in the development of physical culture and sports

The Pecularities of Correlation Between Insulin Resistance, Carbohydrate and Lipid Metabolism Indices in Patients with Graves'disease

Aim. The number of patients with endocrine disorders in the world, in particular, Graves' disease is continuously increasing. Recent studies have determined the fact of insulin resistance in thyroid disorders. On the one hand, numerous researches prove correlation of hypothyroidism with arterial hypertension, ischaemic heart disease and lipid metabolism disorder, on the other – carbohydrate metabolism disorder and hyper-sympathicotonia are closely associated with hyperthyroidism. The subject of the research was to study the correlation of insulin resistance, lipid and carbohydrate metabolism indices in patients with Graves'disease.Material and Methods. During the study 53 (37 female and 16 male) patients with Graves' disease with noticed IR have been examined. At the beginning, after 3– and 6-months thyreostatic therapy with insulin sensitizers (metformin or pioglitazone) the following investigations have been performed: assessing thyroid-stimulating hormone levels, free thyroxine and triiodothyronine; assessing glycated haemoglobin, glucose, C-peptide and fasting insulin as primary IR markers; calculating НОМА-IR index for analysing tissue sensitivity to insulin; calculating НОМА-β index for evaluating the functional capacity of β-cells of islets of Langerhans; measuring Caro indices to monitor hyperinsulinemia, measuring total cholesterol level, low-density lipoproteins, very-low-density lipoproteins, high-density lipoproteins , triglycerides, for analysing IR in relation to lipid metabolism.Results. The research results found out that free thyroid hormones and thyroid-stimulating hormone are closely related to lipid metabolism. Thus, thyroid-stimulating hormone was characterized as having direct correlation with low-density lipoproteins, while the free thyroxine inversely correlated with total cholesterol, low-density lipoproteins, and high-density lipoproteins. The free triiodothyronine negatively correlated with high-density lipoproteins. The research has also determined the direct correlation between insulin and free thyroxine, as well as free triiodothyronine in patients with diffuse toxic goitre.Conclusions. The study proves the presence of insulin resistance in patients with Graves' disease that generates interest to further study of the changes in insulin sensitivity, relation of insulin resistance to thyroid-stimulating hormone, thyroid hormones and looking for the ways to correct these disorders

Long range corrections in liquid-vapor interface simulations

Long range corrections (lrc) for the potential energy and for the force in planar liquid-vapor interface simulations are considered for spherically symmetric interactions. First, it is stated that for the Lennard-Jones (LJ) fluid the lrc for the energy Δu of Janeček [J. Phys. Chem. B 110, 6264 (2006)] is the same as that of Lotfi et al. [Mol. Simul. 5, 233 (1990)]. Second, we present the lrc for the force ΔF for any spherically symmetric interaction as a derivative of Δu plus a surface integral over the cut-off sphere by using the extended Leibniz rule of Flanders [Am. Math. Monthly 80, 615 (1973)]. This ΔF corrects the incomplete lrc Δ1F of Lotfi et al. and agrees with the result of Janeček obtained by direct averaging of the forces. Third, we show that the molecular dynamics (MD) results for the surface tension γ of the LJ fluid with size parameter σ obtained by Werth et al. [Physica A 392, 2359 (2013)] with the lrc ΔF of Janeček and a cut-off radius rc = 3σ agree with the results of Mecke et al. [J. Chem. Phys. 107, 9264 (1997)] obtained with the lrc Δ1F of Lotfi et al. and rc = 6.5σ within −0.4% to +1.6%. Moreover, using only the MD results for γ of Werth et al., we obtain for the LJ fluid a new surface tension correlation which also represents the γ-values of Mecke et al. within ±0.7%. The critical temperature resulting from the correlation is Tc = 1.317 66 and is in very good agreement with Tc,ref = 1.32 of the reference equation of state for the LJ fluid given by Thol et al. [J. Phys. Chem. Ref. Data 45, 023101 (2016)]

Role of three-body interactions in formation of bulk viscosity in liquid argon

With the aim of locating the origin of discrepancy between experimental and computer simulation results on bulk viscosity of liquid argon, a molecular dynamic simulation of argon interacting via ab initio pair potential and triple-dipole three-body potential has been undertaken. Bulk viscosity, obtained using Green-Kubo formula, is different from the values obtained from modeling argon using Lennard-Jones potential, the former being closer to the experimental data. The conclusion is made that many-body inter-atomic interaction plays a significant role in formation of bulk viscosity.Comment: 4 pages, 3 figure

Мікроекономіка: робоча програма нормативної навчальної дисципліни

Предметом вивчення навчальної дисципліни є принципи, закони і закономірності, що формують основи раціональної поведінки економічних суб’єктів. Програма навчальної дисципліни складається з таких змістових модулів: 1. Загальна характеристика мікропроцесів та поведінки суб’єктів в різних структурах ринку. 2. Суб’єкти в реальних ринкових структурах, ринок ресурсів та загальна рівновага.Програма навчальної дисципліни «Мікроекономіка» для студентів 3 курсу за напрямами підготовки 6.030509 «Облік і аудит», 6.030508 «Фінанси і кредит», 6.030504 «Економіка підприємства» денної форми навчанн

Мікроекономіка: робоча програма нормативної навчальної дисципліни

Програма навчальної дисципліни «Мікроекономіка» для студентів 1 курсу за напрямами підготовки 6.030509 «Облік і аудит», 6.030508 «Фінанси і кредит», 6.030504 «Економіка підприємства