Occurrence of Acartia tonsa Dana in the Black Sea. Was it introduced from the Mediterranean?

It was reported for the first time that Acartia tonsa was present in the Black Sea as early as in 1976. A.tonsa was found in the Mediterranean Sea in 1985. So, this copepod was initially introduced to the Black Sea and did not invade here from the Mediterranean. Probably A.tonsa was transferred to the Black Sea with ship's ballast water from some other region of the World Ocean. Differences in seasonal dynamics and size structure of A.clausi and A.tonsa in the Bay of Sevastopol in 1976 are discussed

Forecasting Organic Food Prices: Emerging Methods for Testing and Evaluating Conditional Predictive Ability

Organic farmers, wholesalers, and retailers need price forecasts to improve their decision-making practices. This paper presents a methodology and protocol to select the best performing method from several time and frequency domain candidates. Weekly farmgate prices for organic fresh produce are used. Forecasting methods are evaluated on the basis of an aggregate accuracy measure and several out-of-sample predictive ability tests. A seasonal autoregressive method is recommended for all planning horizons. The role of better price forecasts for the agents who deal in less common organic produce is highlighted. A confirmation for the claim that the organic produce industry needs better farmgate price forecasts to grow is provided.Demand and Price Analysis,

Forecasting Organic Food Prices: Testing and Evaluating Conditional Predictive Ability

Organic farmers, wholesalers, and retailers need reliable price forecasts to improve their decision- making practices. This paper presents a methodology and protocol to select the best-performing method from several time and frequency domain candidates. Weekly farmgate prices for organic fresh produce are used. Forecasting methods are evaluated on the basis of an aggregate accuracy measure and several out-of-sample predictive ability tests. Combining forecasts to improve on individual forecasts is investigated.Demand and Price Analysis,

Application of magnetosomes in magnetic hyperthermia

Magnetosomes, i.e. nanoparticles synthesized in nature by magnetotactic bacteria, are very promising for use in magnetic hyperthermia for the cancer treatment. Using the solution of the stochastic Landau-Lifshitz equation we calculate the specific absorption rate in an alternating magnetic field of assemblies of magnetosome chains depending on the particle size, the distance between particles in a chain, and the angle of the applied magnetic field with respect to the chain axis. The dependence of specific absorption rate on the distance between the chain particles is shown to have a bell-shaped form with a pronounced maximum. The maximum specific absorption rate only weakly depends on the diameter of the nanoparticles and the length of the chain. However, a significant decrease in specific absorption rate occurs in a dense chain assembly due to the strong magneto-dipole interaction of nanoparticles of different chains.Comment: 11 pages, 5 figure

On flood protection measures for potash mines

Development of water-soluble ore deposits is associated with the necessity to preserve water blocking strata (WBS), which separate aquifers from the mine gob. One indicator of the rate of man-induced load on WBS layers is subsidence of the earth surface, which defines the character of shift trough formation of the earth surface. The greatest threat of WBS discontinuity is posed by the areas located at the edges of a shift trough. From the perspective of Upper Kama deposit of potassium and magnesium salts, by means of mathematical modelling methods authors demonstrated that in the capacity of threat indicators of WBS hole destruction it is possible to use the following parameters of a shift trough: edge length scaled to the depth of mining operations and maximum  subsidence of the earth surface. Critical combination of these factors is responsible for the discontinuity at the edges of water blocking strata. These parameters of a shift trough can easily be controlled by instrumental procedures and can be included in the basics of a general monitoring system of WBS state at potash mines. In order to protect the mine from the inrush of fresh water, it is necessary to form softening zones at the edges of mined-out areas near permanent or temporary borders of mining operations. Authors review different options of softening zone formation. Numerical tests have demonstrated that the most efficient way to protect water blocking strata is the formation of softening zones by means of backfilling the stopes of the workable seam or its exclusion from mining operations

Specific Absorption Rate of Assembly of Magnetite Nanoparticles with Cubic Magnetic Anisotropy

The presence of strong magnetic dipole interaction in assemblies of fractal clusters of nearly spherical magnetite nanoparticles, which arise in a biological media loaded with magnetic nanoparticles, leads to a significant decrease of the specific absorption rate of these assemblies in alternating magnetic field. However, the specific absorption rate of the assembly can be increased if the nanoparticles are covered by non magnetic shells of sufficiently large thickness comparable with the nanoparticle diameter. Keywords: Magnetite nanoparticles, Magneto- dipole interaction, Specific absorption rate, Numerical simulatio

Управління фінансовою діяльністю фармацевтичного підприємства

Губанова, А. С. Управління фінансовою діяльністю фармацевтичного підприємства = Management of financial activities of a pharmaceutical company : магістерська робота ; спец. 073 “Менеджмент“ / А. С. Губанова ; наук. кер. Н. П. Тубальцева. – Миколаїв : НУК, 2020. – 84 с.Магістерська робота на здобуття ступені магістра менеджменту за спеціальністю – Управління закладами охорони здоров’я, Національній університету кораблебудування імені адмірала Макарова, Миколаїв, 2020. На основі використання теоретичного і практичного матеріалу визначенно сутність принципів формування системи управління фінансовою діяльністю фармацевтичного підприємства. Освітлено аспекти управління фінансовою діяльністю фармацевтичного підприємства в сучасних умовах. Розкрито проблеми та перспективи розвитку фінансової діяльності фармацевтичних підприємств України. Виявлено основні актуальні принципи формування систем управління фінансовою діяльністю фармацевтичного підприємства. Обґрунтовано, що не існує універсальної методики оцінювання фінансової діяльності підприємства, яка б враховувала мету фінансового аналізу, постійно змінюваний склад множини оцінювальних параметрів, який змінюється відповідно до умов розвитку внутрішнього та зовнішнього економічного середовища, а також розмірність, специфіку підприємства конкретної галузі й умов, у яких воно функціонує. Наведено основні напрями розвитку фармацевтичних підприємств для підвищення ефективності їх фінансової діяльності. Розроблено фінансову стратегію, метою якої є забезпечення фінансової незалежності підприємства, шляхом оптимізації структури фінансових ресурсів (капіталу), дешевих залучених фінансових ресурсів (міжнародні гранди та кредити), продаж застарілого обладнання та купівлю нового у лізинг, диверсифікація виробництва. Удосконалено методику оцінки фінансового стану підприємств фармацевтичної галузі, що на основі запропонованої системи показників з урахуванням значимості кожного з них і подальшим розрахунком інтегральної оцінки. Виведено факторну удосконалену модель оцінки фінансового стану підприємств фармацевтичної галузі України.Master's dissertation for the Master’s degree in Management of health care facilities, Admiral Makarov National University of Shipbuilding named, Mykolaiv, 2020. On the basis of theoretical and practical material, the essence of the principles of brand structure formation of a pharmaceutical company is determined. Aspects of the financial activity of the pharmaceutical enterprise in modern conditions are covered. Problems and prospects of the financial activity of the marketing activity of pharmaceutical enterprises in Ukraine are revealed. The basic actual principles of the financial management activity of the pharmaceutical enterprise are discussed. It is substantiated that there is no universal method of assessing the financial performance of the enterprise, which takes into account the purpose of financial analysis, constantly changing composition of many evaluation parameters, which change according to the internal and external economic environment, as well as dimensionality. The main directions of development of pharmaceutical enterprises to increase the efficiency of their financial activities are given. A financial strategy has been developed to ensure the financial independence of the enterprise by optimizing the structure of financial resources (capital), cheap borrowed financial resources (international grants and loans), selling obsolete equipment and buying new ones on lease, diversification of production. The method of assessing the financial condition of the pharmaceutical industry has been improved, based on the proposed system of indicators. It also takes into account the importance of each of them and the subsequent calculation of the integrated assessment. The factor model for estimating enterprise financial conditions is deduced

Intercomparison of five nets used for mesozooplankton sampling

Intercomparison of nets commonly used for mesozooplankton sampling in the Black and Mediterranean seas was attempted within SESAME (Southern European Seas: Assessing and Modelling Ecosystem Changes) project. Five nets were compared: three Juday nets equipped with 150 μm, 180 μm and 200 μm mesh size, Nansen net (100 μm mesh size) and WP2 (200 μm mesh size). Replicated samples were collected at one station in the western Black Sea offshore waters in April 2009. Collected samples were analyzed at species level (except for meroplankton), stages (for copepods) and size length. A decrease of total abundance values was observed with increasing mesh size, due to the significantly higher numbers of animals smaller than 1 mm in the samples obtained by fine mesh size than with coarser nets. Few comparisons were revealed significant for the abundance of animals with 1-2 mm length, while no significance was detected for specimens larger than 2 mm. The above differences resulted in discripancies between nets regarding species and stages composition. Biomass values did not differ significantly between nets, due to the strong contribution to total biomass of the large animals fraction (Calanus euxinus). The smallest and the largest animals revealed high variability between replicates collected by Nansen, Juday- 200 μm and WP2 nets. Correction factors were calculated for the conversion of abundance values between each couple of nets. The detected differences between nets regarding the abundance and biomass, the community taxonomic composition and size structure, as well as the estimated correction factors, provide useful information for the harmonization of data obtained by the above nets in the Black Sea

STUDY OF REFLECTION COEFFICIENT DISTRIBUTION FOR ANTI-REFLECTION COATINGS ON SMALL-RADIUS OPTICAL PARTS

The paper deals with findings for the energy reflection coefficient distribution of anti- reflection coating along the surface of optical elements with a very small radius (2-12 mm). The factors influencing the magnitude of the surface area of the optical element, in which the energy reflection coefficient is constant, were detected. The main principles for theoretical models that describe the spectral characteristics of the multilayer interference coatings were used to achieve these objectives. The relative size of the enlightenment area is defined as the ratio of the radius for the optical element surface, where the reflection is less than a certain value, to its radius (ρ/r). The result of research is the following: this size is constant for a different value of the curvature radius for the optical element made of the same material. Its value is determined by the refractive index of material (nm), from which the optical element was made, and the design of antireflection coatings. For single-layer coatings this value is ρ/r = 0.5 when nm = 1.51; and ρ/r = 0.73 when nm = 1.75; for two-layer coatings ρ/r = 0.35 when nm = 1.51 and ρ/r = 0.41 when nm = 1.75. It is shown that with increasing of the material refractive index for the substrate size, the area of minimum reflection coefficient is increased. The paper considers a single-layer, two-layer, three-layer and five-layer structures of antireflection coatings. The findings give the possibility to conclude that equal thickness coverings formed on the optical element surface with a small radius make no equal reflection from the entire surface, and distribution of the layer thickness needs to be looked for, providing a uniform radiation reflection at all points of the spherical surface