Features of laboratory indices in workers of chemical production with occupational skin diseases

Changes of haematological and biochemical indices depending on the nosological entities of occupational diseases and the gender were analyzed in workers of chemical complex. Changes of these indices depending on the gender identity were revealed in workers with skin hyperkeratinization at the conduction of medical examination. Eosinophilia, lymphocytosis and leukopenia were revelaed in men with hyperkeratinization, increase of hemoglobin quantity and leukopenia were revealed in women with hyperkeratinization. There were no differences depending on the gender in patients with skin cancer

Информативность диагностической транскраниальной магнитной стимуляции в дебюте сосудистой миелопатии спинного мозга: обзор литературы и клиническое наблюдение

Vascular myelopathy is a variant of acute or subacute lesions of the spinal cord as a result of circulatory disorders in the local vascular basin or hemodynamic changes in the vessels of distant localization.A clinical case of a patient with vascular myelopathy at the thoracic level is presented, the anamnesis of the disease, the results of examination and instrumental research methods with an assessment of the significance of diagnostic transcranial magnetic stimulation at the onset of the disease are presented.The purpose of this publication is to demonstrate the informative value of diagnostic transcranial magnetic stimulation and magnetic resonance imaging in the onset of vascular myelopathy of the spinal cord.A clinical case of a patient with vascular myelopathy at the thoracic level is presented, the history of the disease, the results of examination and instrumental methods of investigation are considered, with an assessment of the significance of diagnostic transcranial magnetic stimulation in the onset of the disease. A review of the literature was carried out in order to assess the information content of neurophysiological and neuroimaging studies in vascular myelopathy. In patients with onset of spinal cord infarction, the study of motor evoked potentials can demonstrate the involvement of cortico-spinal projections even in the absence of neuroimaging data of their damage during 48 hours.The transcranial magnetic stimulation with the analysis of motor evoked potentials is a reliable tool for diagnosing damage to cortico-spinal projections in the onset of vascular myelopathy.Сосудистая миелопатия – вариант острого или подострого поражения спинного мозга в результате нарушения кровообращения в местном сосудистом бассейне или гемодинамических сдвигов в сосудах отдаленной локализации.Цель настоящей публикации – продемонстрировать информативность диагностической транскраниальной магнитной стимуляции в дебюте сосудистой миелопатии спинного мозга.Представлен клинический случай пациентки с сосудистой миелопатией на грудном уровне, рассмотрены анамнез заболевания, результаты осмотра и инструментальных методов исследования с оценкой диагностической значимости транскраниальной магнитной стимуляции в дебюте заболевания. Проведен обзор литературы с целью оценки информативности нейрофизиологических и нейровизуализационных исследований при сосудистой миелопатии.Обследование пациентки с дебютом инфаркта спинного мозга продемонстрировало информативность моторных вызванных потенциалов в первые 48 ч болезни как маркера вовлечения кортикоспинальных проекций при отсутствии изменений или неоднозначных изменениях при нейровизуализационном исследовании.Транскраниальная магнитная стимуляция с анализом моторных вызванных потенциалов является информативным инструментом диагностики повреждения кортикоспинальных проекций в дебюте сосудистой миелопатии

Joint effect of small additives of carbon nanoparticles of different morphologies on the mechanical characteristics of cross-linked polyurethanes under static and dynamic loads

Influence of small additives of fullerene, graphene oxide, and their combinations in the ratio of 85 : 15 on the structure and mechanical properties of cross-linked polyurethanes under static and dynamic loads has been investigated. Nanocomposite structures have been studied by X-ray diffraction analysis and scanning electron microscopy. It is shown that the presence of carbon nanoparticles in the composite reduces its strength under both static and shock-wave loads. The synergistic effect of the mixture of carbon nanoparticles manifests itself as an increase in the elastic modulus by a factor of 1.25 in comparison with the initial polymer

Homogeneous Group IVB Catalysts of New Generations for Synthesis of Ethylene-Propylene-Diene Rubbers: A Mini-Review

Ethylene-propylene-diene rubbers (EPDM) are one of the most important polyolefin materials widely commercialized and used in various industries in recent years. The production of EPDM is based solely on catalytic coordination polymerization processes. The development of new catalysts and processes for the synthesis of EPDM has expanded the range of products and their manufacturing in terms of energy efficiency, processability, and environmental safety. This mini-review mainly analyzes patented data on the synthesis of EPDM on new-generation single-site catalytic systems based on Group IVB complexes including the systems commercialized by major manufacturers of EPDM. The advantages of these systems are evident in comparison with conventional vanadium systems introduced into production in the 1960s and used to date in the industrial synthesis of EPDM

Synthesis and Study of Properties of Waterborne Polyurethanes Based on β-Cyclodextrin Partial Nitrate as Potential Systems for Delivery of Bioactive Compounds

Eco-friendly waterborne polyurethanes (WPU) find wide application in agriculture as pesticide carriers, which enhances their efficiency. To provide better control of the retention time and capacity of pesticides, WPU can be modified by cyclodextrin derivatives able to form supramolecular assemblies with bioactive substances. Synthesis of WPU containing up to 15 wt.% of covalently bound β-cyclodextrin partial nitrate (CDPN) is reported in this work. Covalent bonding of CDPN to a polyurethane matrix has been proved by IR spectroscopy and size exclusion chromatography. The particle size and viscosity of the WPU dispersion have been determined. The introduction of CDPN affects molecular weight and thermal properties of WPU films. The presence of CDPN in WPU is shown to provide higher average molecular weight, wider molecular weight distribution, and larger average size of dispersed particles, compared with WPU reference samples containing 1,4-butanediol. The analysis of the rheological behavior of the obtained WPU dispersions shows that they can be classified as pseudoplastic liquids. The analysis of the thermal parameters of WPU films indicates that the introduction of 15.0 wt.% CDPN shifts the value of the glass transition temperature from −63 °C to −48 °C compared with reference samples. We believe that the results of the present study are sufficiently encouraging in terms of using CDPN-modified eco-friendly WPU as potential systems for developing the delivering agents of bioactive compounds. The application of such systems will allow the long-term contact of pesticides with the plant surface and minimize the possibility of their release into the environment