How the green's functions may be used for correcting measurements of transmission through flat homogeneous and sandwich-type dielectric sheets

The Green's functions of layered structures are used for analysis of measurement errors of transmitting losses through solid and sandwich-type dielectric structure. Influence of the spherical waves excited by radiators in the near zone is under investigation. As the simplest antenna, the Huygens element was used for calculations. The model of equivalent electric circuits was used for layered structure modelling. The transmitting losses of electromagnetic waves versus frequency for different dielectric sheets are shown. Influence of the distance between antennas on the transmitting losses measurements is analyzed. It is proposed to use the suggested method to analyze the accuracy of the transmission coefficients measurements if the horn antennas are used. © 2020 American Institute of Physics Inc.. All rights reserved.This work was supported by the Grant of the Ministry of Science and Higher Education of the Russian Federation (project no 8.2538.2017/4.6)

Functional state of glutathione system in menopausal women of the Buryat ethnic group with insomnia

The aim of the study was to assess the functional state of glutathione system in menopausal women of the Buryat ethnic group with insomnia.   Methods. The study involved 94 women aged 45 to 60 years who were divided into perimenopause (n = 44) and postmenopause (n = 50) groups. In each period, a control group and an insomniac group were identified. The reduced (GSH) and oxidized (GSSG) glutathione levels in erythrocyte lysate, the glutathione-S-transferase π concentration and glutathione reductase activity in blood serum were determined.   Results. An increase of the GSH level (p < 0.05) and GSH/GSSG ratio (p < 0.05) both in perimenopausal and postmenopausal women with insomnia were found as compared to controls. There were no differences in the glutathione-depends enzymes parameters. Comparative analysis of the main groups showed an increase GSH/GSSG ratio (p < 0.05) in the postmenopausal period compared with perimenopause.   Conclusion. The study results demonstrate the glutathione link activation in Buryat menopausal women with insomnia. In this regard, the appointment of glutathione preparations for the correction of free radical homeostasis in these groups of women cannot be recommended

Osteoporosis as a result of the long-term administration of glucocorticoids in patients suffering from acantholytic pemphigus

Goal – to study the prevalence of glucocorticoid-induced osteoporosis in patients suffering from acantholytic pemphigus and risk of osteoporosis-related fractures.Цель публикации – изучение распространенности глюкокортикоидного остеопороза у больных акантолитической пузырчаткой, риска остеопоротических переломов

Osteoporosis as a result of the long-term administration of glucocorticoids in patients suffering from acantholytic pemphigus

Goal – to study the prevalence of glucocorticoid-induced osteoporosis in patients suffering from acantholytic pemphigus and risk of osteoporosis-related fractures.Цель публикации – изучение распространенности глюкокортикоидного остеопороза у больных акантолитической пузырчаткой, риска остеопоротических переломов

Osteoporosis as a result of the long-term administration of glucocorticoids in patients suffering from acantholytic pemphigus

Goal. To study the prevalence of glucocorticoid-induced osteoporosis in patients suffering from acantholytic pemphigus and risk of osteoporosis-related fractures. Materials and methods. The study involved 26 patients including 12 patients suffering from acantholytic pemphigus. The patients underwent dual-energy X-ray absorptiometry (DXA) for calculating bone mineral density (BMD) as well as T and Z scores. To assess the ten-year probability (absolute risk) of fractures, the FRAX model was applied. Major results. Glucocorticoid-induced osteoporosis was diagnosed in 33.3% of the AP patients receiving a glucocorticoid therapy, and osteopenia was also diagnosed in 33.3% of them; an increased risk of osteoporosis-related fractures was observed in all of the patients over 40, which entails the need in early diagnostics of pathologic bone changes and prevention of complications such as osteoporosis-related fractures. Conclusion. A high share of complications (83.3%) related to systemic GCS stipulates the need in increased cooperation between dermatologists and allied specialists