41 research outputs found

    Markov Chain Model for Stock Market Move Prediction

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    AUTOMATION OF DATA FROM VIDEO CAMERAS OF SMALL AND MEDIUM-SIZED UNMANNED AERIAL VEHICLES PROCESSING

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    The information technology for graphical data from unmanned aircraftreal time processing was developed. Information technology embodied in theform of an automated system can be used in the development of a secondexternal pilot workplace. The structure and functionality of the automatedsystem, considered used image processing algorithms and video, weredescribed.Розроблено інформаційну технологію обробки фото- та відеоданихз борту безпілотного повітряного судна в режимі реального часу. Інфор-маційну технологію реалізовано у вигляді автоматизованої системи, щоможе знайти використання при розробці робочого місця другого зовніш-нього пілота. Описано структуру та функціональні можливості автома-тизованої системи, розглянуто використані алгоритми обробки зобра-жень та відео.Разработана информационная технология обработки фото- ивидеоданных с борта беспилотного летательного аппарата в режиме реального времени. Информационной технологии, реализованной в виде автоматизированной системы, можно найти применение при разработке рабочего места второго внешнего пилота. Описана структура и функциональные возможности автоматизированной системы, рассмотрены использованные алгоритмы обработки изображений и видео

    Comparative characteristics of nasopharynx microbiota and vaginal biotope in women with reproductive disorders

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    Nasopharyngeal flora contributes much to the development of many diseases, including the urinary system diseases. The aim was to compare the vaginal microbiota biotope and nasopharynx microbiota in women with reproductive disorders (RD). The study involved 97 women with RD (infertility, miscarriage). The control group comprised women with chronic endometritis (CE), RD and chronic tonsillitis (CT) (n = 65), mean age was 31.0 ± 5.3. CE was diagnosed using histologic analysis and ultrasound studies. The comparison group consisted of 32 women with RD without CE and HT, representative by age. Endometrial sampling was conducted by endometrial pipelle biopsy taken on 5-11th days of the menstrual cycle. Nasopharyngeal swabs were taken on an empty stomach. Due to reduced indigenous microbiota in the studied habitats the number of opportunistic pathogenic microflora such as Staphylococci, Enterococci, fungi, E. coli and etiologically significant Streptococcus (in nasopharynx) was increased. Streptococci in the nasopharynx indicate that the troubles are in vaginal biotope, which leads to inflammatory diseases and reproductive disorders. Everything mentioned demonstrates common etiopathogenic mechanisms for the development of pathological processes of various localizations. Thus, it is important to pay close attention to all rehabilitation centers specializing on chronic infections, which will improve the treatment of CE

    Genes of pathogenicity of Enterococcus bacteria isolated from the vaginal biotope of women with chronic endometritis and reproductive disorders

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    The microflora of the vagina plays an important role and should be regarded as a kind of ecological system that reacts to any changes in the state of the woman's body. Clinically expressed genital infections are etiologically associated with opportunistic microorganisms. In the pathogenesis of dysbiosis, an important role is played not only by quantitative and qualitative changes in microflora, but also by the "pathogenic potential" of microorganisms. The aim of the work was to reveal genes of pathogenicity in strains of Enterococci of the vaginal biotope of women of the studied groups. The study involved 102 women with reproductive disorders. The main group - women with chronic endometritis (CE), (n = 63), mean age - 31.0 ± 5.3. The diagnosis of chronic endometritis was made on the basis of morphological signs of histological examination of vacuum suction biopsy. The comparison group consisted of 39 women, representative by age; in this group the diagnosis was not confirmed by the results of the histological study of the endometrium. It has been established that enterococcal strains isolated only in women with reproductive disorders and chronic endometritis are a reservoir of genetic determinants of pathogenicity factors (efaA and asa1 (12.5 %) and sprE (37.5 %))

    Assessment of the relationship between the vaginal microecosystem in teenage girls with reproductive disorders

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    Background. Violations of indigenous microflora composition associates with a wide variety of gynecological complications. Thus, the qualitative and quantitative composition of lactobacilli and their associative capacity and functional activity may serve as a criterion of microecological well-being in the body. Aim. To study species diversity of lactobacilli in vaginal biotope teenage girls with gynecological pathologies and to assess the extent of their relationship with the combination of diversity profiles associated opportunistic pathogens. Materials and methods. The study included 107 adolescents with reproductive system disorders. The study was conducted with the use of gynecological and general microbiological methods. Results. It was revealed that in vaginal biocenosis of the studied group of teenage girls dominating lactobacilli were Lactobacillus plantarum and L. crispatus, the incidence of other species did not exceed 21 %. Among the representatives of opportunistic pathogenic microflora dominated coccal microflora and Corynebacterium spp., being the part of normal flora of vaginal mucosa. Analysis of species composition revealed a statistically significant relationship between certain types of lactobacilli and opportunistic microorganisms, i.e. lactobacilli showed no antagonistic activity towards the opportunistic microorganisms, and formed symbiotic relationships with them. Conclusions. Most commonness was found among the minor species of lactobacilli (L. iners, L. gasseri, L. jensenii), coagulase-negative staphylococci and fungi of Candida genus, and that increases the risk of transformation of normal microflora in the pathological one

    Design of organyl phosphate-based pro-drugs: comparative analysis of the antibiotic action of alkyl protecting groups with different degree of fluorination

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    Background. Molecular structures combining a phosphorus-containing counterpart and non-polar radicals are employed in design of pro-drugs as structural and functional groups necessary for transportation of drugs through cellular barriers. It is assumed that the carrier itself does not exhibit biological activity. However, the “organic phosphate – alkyl radical” complex may possess its own metabolic and pharmacological properties even in the absence of a drug moiety.The aim. To study the effect of fluorinated alkyl phosphates on the growth of bacterial test cultures in an agar medium and to identify conjugated metabolic markers using UV/visible spectroscopy.Materials and methods. The effect of six organyl phosphates on the growth of five types of bacteria under aerobic conditions was evaluated by the method of wells in an agar medium. For solutions containing cell metabolites of Pseudomonas aeruginosa, the absorption spectra were recorded at 250–280 nm. The principal component analysis (PCA) was used for multivariate comparative analysis of the spectra. Results. The studied organyl phosphates bearing the ethyl and propyl radicals are potential temporary carriers of the drug moiety, since they are capable of penetrating through cellular barriers. However, the fluorinated compounds exhibit bactericidal properties, the degree of which depends on the arrangement of fluorine atoms in the radical. The most active compounds are those exhaustively halogenated at the terminal carbon atom of the ethyl radical (-СН2-СF3), while non-fluorinated organyl phosphate is the least active. UV/visible spectra of P. aeruginosa cultivation products, according to PCA data, contain patterns reflecting the metabolic effects mediated by these structural features of the radicals.Conclusion. In terms of practical application of the studied compounds, the activity of a proantibiotic based on organyl phosphate with a non-fluorinated ethyl(propyl) radical will be determined only by the specificity of the drug moiety. Exactly the same molecule, but exhaustively fluorinated at the terminal carbon atom of the alkyl radical, is likely to be characterized by lower specificity and higher activity under the additive (or synergistic) action of metabolically active groups

    Characteristics of Nasopharyngeal Microbiocenosis and Evaluation of the Interaction of its Associates in Women with Chronic Endometritis

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    The upper respiratory tract is one of the most important biotopes in the human body. Therefore, in order to understand the cause-effect relationships between the microbial world and the pathological state of a person, it is crucial to clarify the relationship of the microbes-associates.The study involved 74 women with reproductive disorders. The main group – women with chronic endometritis (n = 47). The diagnosis of chronic endometritis was revealed on the basis of morphological signs of histological examination of aspirates from the uterine cavity. The comparison group consisted of 27 women, in whom the chronic endometritis was not confirmed. When applying, women complained more often of infertility and (or) miscarriage. Of the accompanying extragenital diseases, chronic tonsillitis in women of the studied groups was most often diagnosed. Therefore, it was important to give a microbiological description of the nasopharyngeal biotope of these women, as one of the factors that influences the reserves of confrontation of the reproductive function of the body to infections. Nasopharyngeal microbiocenosis of women with chronic endometritis was characterized by deficiency of the indigenous microbiota and a permanent presence in the microbiocenosis of the absolute pathogen (S. aureus) and transient species (enterococci, CNS). Between the representatives of normoflora antagonistic relations were established. The obtained results indicate violations in the nasopharyngeal biotope of these women, which can cause immunodeficiency and, as a consequence, the development and flow of chronic endometritis
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