228 research outputs found

    Nominatives in the coastal-aquatic vegetation lexis in the westernpollisyan dialects

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    У статті на підставі самостійно зібраних за розробленою програмою матеріалів представлено чималий набір номенів, які репрезентують болотні рослини в західнополіських говірках, визначено специфіку номінації цієї лексико-тематичної групи.Introduction. The article is based on independently developed program and collected sources which present considerable empirical material – set of noments representing coastal-aquatic vegetation in westernpollisyan dialects, identified specific category of lexical and thematic groups. Main text. Names of coastal-aquatic vegetation in westernpollisyan dialects form a plentiful vocabulary in terms of thematic group, level of representation and nominative variability of desyhnativs which are different. Lexical variation of group thoroughly imbued by synonymous relations, besides the same names for nomination of several desyhnativs are used. Summary and Conclusions. Most types of coastal-aquatic vegetation – monolexems. Analytical names are represented mainly by the type of attributive phrases

    Platinum recycling going green via induced surface potential alteration enabling fast and efficient dissolution

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    The recycling of precious metals, for example, platinum, is an essential aspect of sustainability for the modern industry and energy sectors. However, due to its resistance to corrosion, platinum-leaching techniques rely on high reagent consumption and hazardous processes, for example, boiling aqua regia; a mixture of concentrated nitric and hydrochloric acid. Here we demonstrate that complete dissolution of metallic platinum can be achieved by induced surface potential alteration, an 'electrode-less' process utilizing alternatively oxidative and reductive gases. This concept for platinum recycling exploits the so-called transient dissolution mechanism, triggered by a repetitive change in platinum surface oxidation state, without using any external electric current or electrodes. The effective performance in non-toxic low-concentrated acid and at room temperature is a strong benefit of this approach, potentially rendering recycling of industrial catalysts, including but not limited to platinum-based systems, more sustainable

    Reconstruction of unbroken vasculature of mouse by varying the slope of the scan plane in MRI

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    Reconstruction of vascular net of small laboratory animals from MRI data is associated with some problems. This paper proposes a method of MRI data processing which allows to eliminate the fragmentation of reconstructed vascular net. Problem of vessels fragmentation occurs in the case when vessels are parallel to the scanning plane. Our approach is based on multiple scanning, object under consideration is probed by several sets of parallel planes. The algorithm is applied to real MRI data of small laboratory animals and shows good results

    Особенности цитокинового профиля у детей с расстройством аутистического спектра

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    The aim of the study: to reveal the particularities of the concentration of cytokines IL4, IL6, IL10, IL17, IFNγ in blood serum in children with autism spectrum disorder (ASD).Materials and methods. The blood samples obtained from children of two study groups: children with autism spectrum disorder (n = 93) and clinically healthy children (n = 30), served as the material for the  study. Cytokine concentrations were determined in blood serum using the Bender Medsystems (Austria) kits  for IL17A and Vector-Best (Russia) kits for IL4, IL6, IL10, IFNγ. Serum cytokine concentrations were determined by enzyme immunoassay using kits for IL17A (Bender Medsystems, Austria), IL4, IL6, IL10, IFNγ (Vector-Best, Russia). Assessment of cognitive and psychophysiological indicators in children was performed using the  Autism Treatment Evaluation Checklist (ATEC).Results. The concentrations of IL17A (U = 54; p = 0,015) and IFNγ (U = 4.64; p = 0,006) were increased and the concentrations of IL6 (U = 327; p = 0.001) and IL4 (U = 177; p = 0.001) were decreased in children with ASD. The concentration of IL6 correlates with the concentration of IL4 (r = 0.68; p < 0.05). The concentration of IL17A correlates with the concentration of IFNγ (r = 0.41; p < 0.05), IL6 (r = 0.87; p < 0.05) and ATEC score (r = 0.24; p < 0.05) in the group of children with ASD.Conclusion. The cytokine disbalance in children with ADS, which was observed in our study, confirms the  hypothesis of their participation in the development of the disease and clearly shows the Th17  immunoregulation pathway in the pathogenesis of the autism spectrum disorder.Цель работы: выявить уровень концентрации цитокинов IL-4, I-L6, IL-10, IL-17, IFNγ в сыворотке крови у детей с расстройством аутистического спектра (РАС).Материалы и методы. Материалом исследования служили образцы крови, полученные от детей двух групп исследования: детей с расстройством аутистического спектра (n = 93) и клинически здоровых детей (n = 30). Средний возраст в обеих группах составил (7 ± 2) лет. В сыворотке крови методом иммуноферментного анализа определяли концентрацию цитокинов IL-17А (с применением набора Bender Medsystems, Австрия) и IL-4, IL-6, IL-10, IFNγ (Вектор-Бест, Россия). Оценку когнитивных и  психофизиологических показателей проводили с помощью анкеты Autism TreatmentEvaluation Checklist (АТЕС).Результаты. У детей с РАС повышены значения концентрации IL-17A (U = 54; p = 0,015) и IFNγ (U = 4,64; p = 0,006) и снижены – IL-6 (U = 327; p = 0,001) и IL-4 (U = 177; p = 0,001) по сравнению с этими показателями у детей в контрольной группе. Установлены корреляции между концентрацией IL-6 и IL-4 (r = 0,68; p < 0,05); между IL-17A и IFNγ (r = 0,41; p < 0,05), IL-6 (r = 0,87; p < 0,05), количеством баллов АТЕС (r = 0,24; p < 0,05) у детей с РАС.Заключение. Установленный нами дисбаланс цитокинов у детей с РАС подтверждает гипотезу его участия в развитии РАС и свидетельствует об Th17-направлении  иммунорегуляции в патогенезе расстройств аутистического спектра

    Atomically dispersed Pt-N-4 sites as efficient and selective electrocatalysts for the chlorine evolution reaction

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    Chlorine evolution reaction (CER) is a critical anode reaction in chlor-alkali electrolysis. Although precious metal-based mixed metal oxides (MMOs) have been widely used as CER catalysts, they suffer from the concomitant generation of oxygen during the CER. Herein, we demonstrate that atomically dispersed Pt-N-4 sites doped on a carbon nanotube (Pt-1/CNT) can catalyse the CER with excellent activity and selectivity. The Pt-1/CNT catalyst shows superior CER activity to a Pt nanoparticle-based catalyst and a commercial Ru/Ir-based MMO catalyst. Notably, Pt-1/CNT exhibits near 100% CER selectivity even in acidic media, with low Cl- concentrations (0.1M), as well as in neutral media, whereas the MMO catalyst shows substantially lower CER selectivity. In situ electrochemical X-ray absorption spectroscopy reveals the direct adsorption of Cl- on Pt-N-4 sites during the CER. Density functional theory calculations suggest the PtN4C12 site as the most plausible active site structure for the CER

    Effects of diet on blood rheological indices, cytokine concentrations, and emergence of metabolic disorders in the persons with increased body mass index

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    Metabolic syndrome (MS) is a serious medical and social problem due to its high prevalence, lack of common approaches to diagnosis and treatment. Prevention of food dysadaptation reactions and the studies of control mechanisms of immune tolerance to food antigens is of special scientific interest, thus providing available anti-inflammatory tools for correcting increased permeability of the intestinal epithelium and vascular endothelium associated with development of MS. Nutritional dysadaptation occurs due to inappropriate diet being mediated by the geno-phenotypic characteristics of digestive enzymes and immune system which control the efficiency of food digestion.Immunological control of digestion, including dynamic maintenance of tolerance to food antigens, is carried out at two levels of immune system: innate response with functional involvement of microbiota, and adaptive response, represented by cellular and humoral mechanisms associated with molecular epitopes and critical mass of persistent food antigens which are present in immunologically competent areas of small intestine, due to changing permeability of intestinal barrier and transcytosis processes. Patients and methods: aiming for assessment of the diet contribution to the immuno-biochemical and rheological imbalance in people with increased body weight, 170 volunteers of both sexes aged 20-55 years were examined, depending on the body mass index: > 27.0 kg/m2 (clinical group, n = 120), and those with BMI of < 25.0 kg/m2 (control group, n = 50). We have revealed statistically significant increase of multiple parameters in the clinical group, i.e., concentration of IL-6, IL-17, cholesterol, glucose, glycosylated hemoglobin, insulin, indices of insulin resistance and atherogenicity. Increased levels of specific IgG antibodies to a number of food antigens were found in the subjects in the clinical group. In the course of our study, a statistically significant relationships was found between total numbers of platelets (p < 0.05; r = 0.213), erythrocytes (p < 0.05; r = -0.211), mean erythrocyte volume (MCV) (p < 0, 05; r = 0.339), and the concentration of IgG to casein in the blood, as well as a correlation between the levels of sIgG to soybeans and the number of platelets (p < 0.05; r = 0.231). At the same time, some associations were found between the established values of IgG to casein pAG, and the risk of developing atherogenic changes (atherogenicity index > 3) being significant at OR = 2.68 (1.33-5.42), as well as between IgG values to casein pAG (OR = 8.9 (2.6-30.5)), to soybean pAG (OR = 5.6 (1.8-16.7)), to gluten pAG ((F = 0.00359. p < 0.05), and increased body mass index.The results obtained were interpreted as a possible impairment of food tolerance for a number of food antigens in individuals with high body mass index, due to the revealed correlations between concentrations of IgG to food antigens, imbalance of pro-inflammatory cytokines, rheological and metabolic parameters. These data may be used as biomarkers suggesting higher risk of evolving metabolic syndrome

    Features of Food Hypersensitivity in Children with Autism Spectrum Disorder

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    Currently, the incidence of autism spectrum disorders (ASD) continues to increase in the children’s population. However, the pathogenesis of autism remains controversial.The purpose of this work is to evaluate the performance of the elimination nutritional approaches to the dynamics of indicators of food hypersensitivity, the balance of interleukins and psychophysiological parameters in children with ASD.Methods. A prospective cohort study of children aged 7 ± 2 years, healthy and diagnosed with ASD was performed. Determination of specific immunoglobulin concentrations to 111 food antigens and interleukins was measured by ELISA. Psychophysiological indicators of communicative competence in children with ASD were evaluated in the ATEC-test.Results. It was established that in children with ASD (n = 69), the frequency of occurrence of food hypersensitivity and indicators of specific sIgG concentrations to food antigens of dairy and grain products are higher (р < 0.05). A direct correlation was found between the concentration of INFγ, IgG concentrations to antigens of dairy, grain products and C. albicans. High ratios of the INFγ/IL4 and INFγ/IL10 ratios (p < 0.05) were revealed. As a result of compliance with the elimination diet was noted significant decrease in the concentration of sIgG to food antigens, sIgG to C. albicans, changes indicators following the results of ATEC testing.The data obtained revealed the unexplored effects the influence of specific food hypersensitivity on the process of initiation and maintenance of immune inflammation, as well as on the communicative competence in pathological conditions. A personalized elimination diet can improve the immunorehabilitation and the quality of life of children with autism
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