Development of Formulation and Technology of Low-lactose Dairy Beverage Made from Goat Milk

The concept of lactose intolerance and solution approaches of this problem using modern dairy processing technologies are considered in this study. The protein and lipid constituents were calculated to select the basis of a low-lactose milk beverage. The β-galactosidase preparation was chosen and enzymatic hydrolysis conditions were optimized to obtain a dairy drink that meets the requirements for low-lactose products. To determine the residual amount of lactose in fermented milk, the method for determining whole blood glucose by enzymatic colorimetric method using Shimadzu UV-1800 spectrophotometry was adopted. The influence of technological factors on the dairy low-lactose drink properties was studied. The formulation has been developed and the manufacture process for obtaining a range of low-lactose beverages was adopted, the protein and lipid constituents in the finished product were calculated. The results of this study are considered to be socially significant since the low-lactose products are intended for people suffering from lactase deficiency

Classical theories of media systems: relevance for the contemporary research

The results of a comparative analysis of classifications of media systems developed by foreign researchers in the 20th-21st centuries are presented. Particular attention is paid to the criteria, determinants and comparison parameters that were used in different classifications to identify common characteristics of media systems in different countries. The empirical base of the study includes both popular and little-known authors in the Russian scientific literature, but widely cited in foreign studies, who have formed original classification structures. The basis for the choice of concepts and classifications were the results of the analysis of research and educational programs of Russian and foreign universities, the historical sequence of scientific papers, logical connection with predecessors and followers, contribution to the scientific literature on the theory of journalism and high citation in modern media studies. The main criterion for the selection of the most popular classifications became a citation analysis of foreign researchers’ scientific publications on this topic in the scientometric system Google Scholar that accumulates scientific works from different countries, as well as statistics of Yandex. It is concluded that the main characteristics of media systems, as well as the criteria and parameters used in the most famous classifications (the second half of the 20th - beginning of the 21st century), remain relevant and can be adapted to the analysis of the modern media sphere

Seasonal hydrological and hydrochemical surveys in the Voevoda Bay (Amur Bay, Japan Sea)

Hydrological and hydrochemical surveys were conducted in the Voevoda Bay in May, August, and October, 2011 and February, 2012, in total 140 stations. Free water exchange of the bay with the Amur Bay is observed, with exception of its inner bights Kruglaya and Melkovodnaya. The water exchange is maintained by anticyclonic circulation with the inflow along the southern coast and outflow along the northern coast of the Voyevoda Bay. However, the opposite cyclonic circulation is observed in the Melkovodanaya Bight because of its coastal line patterns and fresh water discharge by the river. Dissolved oxygen content and partial pressure of CO2 in the bay waters are determined mostly by intensive processes of production and destruction of organic matter. There are three main groups of primary producers there, as diatom algae, sea grass Zostera marina , and periphyton. Specific chemical regime is formed in the Melkovodnaya Bight, in particular in winter when primary production depends on the ice cover and is driven by variations of photosynthetically active radiation passed through the ice. Seasonal variability of production-destruction processes intensity is discussed on the data of chemical parameters changes

Классические теории медиасистем: актуальность для современных исследований

The results of a comparative analysis of classifications of media systems developed by foreign researchers in the 20th-21st centuries are presented. Particular attention is paid to the criteria, determinants and comparison parameters that were used in different classifications to identify common characteristics of media systems in different countries. The empirical base of the study includes both popular and little-known authors in the Russian scientific literature, but widely cited in foreign studies, who have formed original classification structures. The basis for the choice of concepts and classifications were the results of the analysis of research and educational programs of Russian and foreign universities, the historical sequence of scientific papers, logical connection with predecessors and followers, contribution to the scientific literature on the theory of journalism and high citation in modern media studies. The main criterion for the selection of the most popular classifications became a citation analysis of foreign researchers’ scientific publications on this topic in the scientometric system Google Scholar that accumulates scientific works from different countries, as well as statistics of Yandex. It is concluded that the main characteristics of media systems, as well as the criteria and parameters used in the most famous classifications (the second half of the 20th - beginning of the 21st century), remain relevant and can be adapted to the analysis of the modern media sphere.Представлены результаты сравнительного анализа классификаций медиа-систем, разработанные зарубежными исследователями в XX-XXI вв. Особое внимание уделяется критериям, детерминантам и параметрам сравнения, которые применялись в разных классификациях для выявления общих характеристик медиасистем разных стран. В эмпирическую базу исследования включены как популярные, так и малоизвестные в российской научной литературе, но широко цитируемые в зарубежных исследованиях авторы, сформировавшие оригинальные классификационные структуры. Основанием для выбора концепций и классификаций стали результаты мониторинга научно-исследовательских и образовательных программ российских и зарубежных университетов, историческая последовательность научных работ, логическая связь с предшественниками и последователями, вклад в научную литературу по теории журналистики и высокая цитируемость в современных медиаисследованиях. Основным критерием для отбора наиболее популярных классификаций был анализ цитирования научных публикаций зарубежных исследователей по данной теме в наукометрической системе Google Scholar, аккумулирующей научные работы разных стран мира, а также статистика сервиса Яндекс. Сделан вывод, что основные характеристики медиасистем, а также критерии и параметры, применявшиеся в наиболее известных классификациях (второй половины XX - начала XXI в.), сохраняют свою актуальность и могут быть адаптированы к изучению современной медиасферы

Predicting Ship Trajectory Based on Neural Networks Using AIS Data

To create an autonomously moving vessel, it is necessary to know exactly how to determine the current coordinates of the vessel in the selected coordinate system, determine the actual trajectory of the vessel, estimate the motion trend to predict the current coordinates, and calculate the course correction to return to the line of the specified path. The navigational and hydrographic conditions of navigation on each section of the route determine the requirements for the accuracy of observations and the time spent on locating the vessel. The problem of predicting the trajectory of the vessel’s motion in automatic mode is especially important for river vessels or river-sea vessels, predicting the trajectory of the route sections during the maneuvering of the vessel. At the moment, one of the most accurate ways of determining the coordinates of the vessel is by reading the satellite signal. However, when a vessel is near hydraulic structures, problems may arise connected with obtaining a satellite signal due to interference and, therefore, the error in measuring the coordinates of the vessel increases. The likelihood of collisions and various kinds of incidents increases. In such cases, it is possible to correct the trajectory of the movement using an autonomous navigation system. In this work, opportunities of the possible application of artificial neural networks to create such a corrective system using only the coordinates of the ship’s position are discussed. It was found that this is possible on sections of the route where the ship does not maneuver

Solvent Effect on the Solid-Surface Fluorescence of Pyrene on Cellulose Diacetate Matrices

The effect of the solvent nature (acetonitrile, ethanol, dimethyl sulfoxide, and dioxane) and its concentration on the fluorescence intensity of pyrene sorbed on the cellulose diacetate (CDA) film from a water-organic solution was studied. Dimethyl sulfoxide and ethanol are shown to be the most effective solvent additives for pyrene solid-surface fluorescence (SSF). The maximum SSF signal of pyrene was found upon sorption of the substance from aqueous media containing 1.2-4.2 vol% DMSO. For the pyrene quantitation the concentration dependence of its SSF intensity at the maximum of the spectrum at λem = 394 nm and λexp = 320 nm was plotted. The dependence has a linear character in the pyrene concentration range 2·10−6 - 2·10-8 g/L, and the limit of pyrene detection is 2·10-11 g/L. The possibility of determining benzo(a)pyrene using SSF technique with the CDA matrix is proved. The proposed method is promising for use in environmental monitoring of polycyclic aromatic hydrocarbons

Influence of the Composition, Structure, and Physical and Chemical Properties of Aluminium-Oxide-Based Sorbents on Water Adsorption Ability

Interaction between the water adsorption ability of aluminium-oxide-based sorbents and their chemical composition, acid-base properties of the surface, and textural characteristics has been analysed. Alumina desiccants were synthesized with the centrifugal–thermal activation of gibbsite followed by the hydration of the gibbsite under mild conditions. It was demonstrated that the multicyclic adsorption regeneration of samples under realistic conditions results in structural transformations and changes in the acidity of their surfaces and water adsorption ability. The modification of pseudoboehmite with alkali ions increases surface basicity and the dynamic capacity of adsorbents relating to water vapours. Equations have been presented that describe the adsorption and desorption processes taking place during water vapour adsorption with the materials studied