ЕКСПЕРИМЕНТАЛЬНО-ТЕОРЕТИЧНІ ПІДХОДИ ДО СТВОРЕННЯ КОМП'ЮТЕРНОЇ ПРОГРАМИ ДЛЯ ВІРТУАЛЬНОГО СКРИНІНГУ СКАВЕНДЖЕРІВ NO В РЯДУ АЗАГЕТЕРОЦИКЛІВ

The creation of computer programs for virtual screening is an urgent task for modern pharmacology and medicine. The article shows some experimental and theoretical approaches to the creation of a computer program for virtual screening of scavengers NO in a range of azageterocycles. Methods for estimating antioxidant activity, quantum mechanical and statistical calculations are presented. Prospects and advantages of computer simulation of the activity of compounds are considered.Создание компьютерных программ для виртуального скрининга является актуальной задачей для современной фармакологии и медицины. В статье показаны некоторые экспериментально-теоретические подходы к созданию компьютерной программы для виртуального скрининга скавенджеров NO в ряду азагетероциклов. Приведены методы оценки антиоксидантной активности, квантово-механические и статистические расчеты. Рассмотрены перспективы и преимущества компьютерного моделирования активности соединений.Створення комп'ютерних програм для віртуального скринінгу є актуальним завданням для сучасної фармакології і медицини. У статті показані деякі експериментально-теоретичні підходи до створення комп'ютерної програми для віртуального скринінгу скавенджерів NO в ряду азагетероциклів. Наведено методи оцінки антиоксидантної активності, квантово-механічні та статистичні розрахунки. Розглянуто перспективи і переваги комп'ютерного моделювання активності сполук

Biological properties of aerococci and bacilli as a component of new associate-probiotic complex

Dysbioses of the gastrointestinal tract are common among people of all ages and genders. Development of this pathology is associated with a number of complications, from indigestion to occurrence of malignant disease. Therefore, there is a need in development of measures of their prevention and correction. Probiotics are used as drugs against dysbiosis. Most of the presently known probiotics contain bacterial cells of one species, although combination preparations feature higher efficiency. At the same time, there are difficulties in construction of these drugs, primarily due to incompatibility of physiological properties of microorganisms and mutually antagonistic action of their components. The aim was to examine the compatibility of Bacillus subtilis and Aerococcus viridans in a single preparation, their antagonistic activity against different strains of test-cultures and general antagonism directed on different groups of bacteria for subsequent formation of associative probiotic complex. Properties of aerococci strains were studied and A. viridans 167 strain was selected for inclusion into the probiotic preparation. The tested strain showed the highest indicators of production of hydrogen peroxide, which is one of the mechanisms of antagonistic effect against opportunistic pathogens. General study of biological properties of aerococci strains showed that producing of hydrogen peroxide and superoxide radical in them was conditioned by functioning of NAD-independent lactatoxidase. It has been determined that antioxidant defense of aerococci from the action of endogenous and active excretable forms of oxygen was provided by activity of superoxide-dismutase and GSH-peroxidase. The method of deferred antagonism found no depressing mutual action between probiotic strains of B. subtilis 3 and A. viridans 167 at their joint cultivation. Inhibition of growth at the joint application of A. viridans 167 and B. subtilis 3 strains was recorded for both museum and clinical strains of test-cultures Escherichia coli, Proteus vulgaris, Klebsiella ozaenae, Citrobacter freundii, Pseudomonas aeruginosa, Staphylococcus aureus, S. epidermidis, Candida albicans. Separate application of A. viridans 167 or B. subtilis 3 against strains of these opportunistic pathogens was characterized by relatively less antagonistic effect of each of strains under study. The results allow us to recommend the studied strains of B. subtilis 3 and A. viridans 167 for use as the components to construct a new associative probiotic preparation

Behavior and Impact of Zirconium in the Soil–Plant System: Plant Uptake and Phytotoxicity

Because of the large number of sites they pollute, toxic metals that contaminate terrestrial ecosystems are increasingly of environmental and sanitary concern (Uzu et al. 2010, 2011; Shahid et al. 2011a, b, 2012a). Among such metals is zirconium (Zr), which has the atomic number 40 and is a transition metal that resembles titanium in physical and chemical properties (Zaccone et al. 2008). Zr is widely used in many chemical industry processes and in nuclear reactors (Sandoval et al. 2011; Kamal et al. 2011), owing to its useful properties like hardness, corrosion-resistance and permeable to neutrons (Mushtaq 2012). Hence, the recent increased use of Zr by industry, and the occurrence of the Chernobyl and Fukashima catastrophe have enhanced environmental levels in soil and waters (Yirchenko and Agapkina 1993; Mosulishvili et al. 1994 ; Kruglov et al. 1996)

Carrier compensation mode implementation in satellite communication channels

Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.The problem of compensation for the cost of renting a satellite resource while providing communication services is considered. The main task is to minimize frequency and energy losses. A solution based on the method of subtracting its own signal, namely, carrier compensation is proposed. To support this mode, models and algorithms for the implementation of the "Carrier Compensation" mode have been developed. On the FPGA basis was created equipment with carrier compensation mode. The results of hardware and software testing are obtained. The decrease of time and, as a result, losses on search and subtraction of a signal is confirmed. The resulting solutions can significantly reduce the resource of satellite communication channels

TARGETED SEARCH OF SUBSTANCES AMONG A NUMBER OF 3 - ARYL (ARALKYL) XANTHINE DERIVATIVES HAVING ANTIRADICAL ACTIVITY WITH REGARD TO SUPEROXIDE RADICALS

The aim of the research was to study the basic descriptors of frontier molecular orbitals of 3- aryl (aralkyl) xanthine using semi-empirical quantum- chemical methods and substantiate their impact on the manifestation of anti-radical activity. Comparison of received data and calculated descriptors values revealed linear dependence of anti-radical activity on the highest occupied and lowest unoccupied molecular orbitals energy values

ПРОФЕСІЙНИЙ ПОРТРЕТ ВИКЛАДАЧА ДИСТАНЦІЙНОГО НАВЧАННЯ В МЕДИЧНОМУ І ФАРМАЦЕВТИЧНОМУ ВНЗ

The problems and necessity of training the lecturers of medical and pharmaceutical institutes of higher education with distance learning are represented in the given article. The necessary arrangements that should be conducted in order to create organizational and methodical approaches of lecturers training are formulated. A model of distance course of a professional development on training of distance education lecturer is reflected in the given article and is introduced in Zaporіzhian state medical university. This model is worked out at the Department of Medical and Pharmaceutical Informatics.У статті окреслено необхідність і проблеми підготовки викладачів медичних та фармацевтичних вищих навчальних закладів з дистанційної форми навчання. Сформульовано необхідні заходи, які необхідно провести для створення організаційно-методичних підходів підготовки викладачів. Висвітлено модель дистанційного курсу підвищення кваліфікації з підготовки викладача дистанційного навчання, яка впроваджується у Запорізькому державному медичному університеті й розроблена на кафедрі медичної та фармацевтичної інформатики