The Effect of Simultaneous Homo- and Heterogeneous Doping on Transport Properties of Ba2In2O5

In this article, the possibility of application of simultaneous homogeneous and heterogeneous doping has been described for the first time. The composite 0.7Ba1.95In2O4.9F0.1⋅0.3Ba2 InNbO6 has been obtained by in situ solid-state method. The scanning electron microscopy and thermogravimetry investigations have beencarried out; the electrical properties have been examined. It has been proved that simultaneous homogeneous and heterogeneous doping is a prospective method for obtaining high-conductive proton electrolytes. Keywords: brownmillerite, composite, anionic doping, fluorin

Conceptual design of accelerator driven systems with light ion beams

The superior energy efficiency of light ion beams instead of proton beams for energy production in accelerator driven systems (ADS) is demonstrated. The energy efficiency is characterized by the energy gain calculated as the ratio of the energy released in the target to the energy spent for the beam acceleration. The energy deposited in the target is obtained via Geant4 simulation. A method to calculate the energy spent for the beam acceleration by scaling from the data for a reference beam is presented. The influence of the target structure on the energy efficiency of 0.5 - 4 GeV proton beams and 0.25 1 AGeV light ion beams is studied. The target consists of rods with different composition (metal, oxide, carbide) and different levels of enrichment in order to implement the target with a criticality coefficient keff of 0.96 - 0.97, which ensure safe operation. The influence of the rod dimensions, the coolant and converter on the neutron spectrum and energy released are analysed

REQUIREMENTS FOR LABORATORY INSTALLATIONS FOR MEASUREMENT OF SOUND INSULATION OF BUILDINGS ENCLOSING STRUCTURES

The paper presents the analysis of requirements for acoustic laboratory room. Requirements for laboratory installations for measurement of sound insulation of buildings enclosing structures are identified.В работе приводится анализ требований к помещению акустической лаборатории по источникам нормативной литературы. Выявлены требования к установкам для измерения звукоизоляции ограждающих конструкций

Proinflammatory status of oral fluid in COVID-19

At present, a search for promising ways to diagnose infection caused by SARS-CoV-2 is quite relevant. Oral fluid is not commonly used for assessment of COVID-19 risk. Its molecular profile reflects both local state of the oral cavity, and individual organs and systems, thus suggesting a reliable diagnostic platform. Systemic inflammatory response is known to play a crucial role in development of the coronavirus infection; the “cytokine storm” determines severity of the disease. The saliva-based diagnostics of clinical course in COVID-19 patients includes determination of IL-6, IL-8, C-reactive protein in oral fluid, in order to assess severity of the inflammatory process. The present study was carried out at the Department of Fundamental and Clinical Biochemistry with Laboratory Diagnostics, and Department of Pediatric Infections at the Samara State Medical University. The study involved 122 persons: 67 clinically healthy individuals comprised the control group, and the group of comparison included 55 inpatients with moderate or severe coronavirus infection (COVID-19) caused by SARS-CoV-2 virus as confirmed by PCR and/or ELISA testing. Development of the disease was accompanied by drastically increased contents of IL-6 and IL-8 in oral fluid of the patients relative to the indexes in healthy persons, i.e., several-fold for IL-6 (+ 650%) and even higher elevation of IL-8 levels (+ 26513%), as well as a 2-fold increase of C-reactive protein (+115%). When comparing the immune indexes of oral fluid in presence versus absence of respiratory insufficiency, a significant difference was found for salivary IL-6 (+173%) in the patients with grade 1-2 respiratory insufficiency as compared with patients free of respiratory disorders. Determination of these proinflammatory markers in patients with COVID-19 is of important prognostic significance when assessing development of the disease and its severity. Direct detection of their content in the oral fluid makes this method relevant, and potentially demanded for the outpatient diagnostics, being highly important during pandemics of coronavirus infection and limited medical resources. Examination of oral fluid at the pre-hospital stage is a resource-saving technology, since it does not require additional medical staff to take biomaterial, is non-invasive to the patient, and suggesting a wide range of research items, it can resolve a number of diagnostic issues, e.c., presence of specific genetic material or antibodies to SARS-CoV-2, severity of the inflammatory process and the risk of respiratory failure in the patient

Functional state of the chewing muscle group in the musculo-articular dysfunction of the temporomandibular joint in patients with chronic generalized periodontitis

This article is devoted to the diagnosis of musculo-articular dysfunction (MSD) of the temporomandibular joint (TMJ) in patients with chronic generalized periodontitis (CGP). The purpose of our work was to study the functional state of the masticatory group of muscles and facial muscles in MSD of the TMJ in patients with CGP. MATERIALS AND METHODS: A clinical examination of 89 patients aged 35-45 years with CHP and MSD was performed. Diagnostic models were studied in the articulator PROTAR (Germany), electromyography was performed. Results: In patients with MSJ, the EMJ significantly changes the electromyographic (EMG) pattern: there appears spontaneous EMG activity of the masticatory muscles and facial muscles during the period of physiological dormancy, the activity of the temporal muscles increases. In the presence of MSD of the TMJ and bruxism in patientsДанная статья посвящена диагностике мышечно-суставной дисфункции (МСД) височно-нижнечелюстного сустава (ВНЧС) у пациентов с хроническим генерализованным пародонтитом (ХГП). Целью нашей работы явилось изучение функционального состояния жевательной группы мышц и мимических мышц при МСД ВНЧС у пациентов с ХГП. Материалы и методы: произведено клиническое обследование 89 пациентов в возрасте 35-45 лет с ХГП и МСД. Изучали диагностические модели в артикуляторе PR0TAR (Германия), проводили электромиографию. Результаты: у пациентов с МСД ВНЧС значительно изменяется злектромиографическая (ЭМГ) - картина: появляется спонтанная ЭМГ-активность жевательных мышц и мимических мышц в период физиологического покоя, повышается активность височных мышц. При наличии МСД ВНЧС и бруксизма у пациентов с ХГП присутствует спонтанная ЭМГ-активность жевательных и мимических мышц в период физиологического покоя

PHYSICAL AND CHEMICAL CHARACTERISTICS OF SOLID RADIOACTIVE WASTE OF URANIUM PRODUCTION

A complex of physico-chemical studies of solid RAW of uranium production was carried out to determine the exact composition. It has been established that radioactive waste mainly consists of gypsum dihydrate, calcium carbonate, calcium fluoride, silicon dioxide

TUNGSTEN SORPTION BY ANION-EXCHANGER PUROLITE A830

Sorption characteristics of anion-exchanger Purolite A830 by W from Na2WO3 solutions with pH 2.5-3.0 were determined. The value of dynamic exchange capacity of resin at full saturation was 458,51 kg W m-3. The 15% ammonia water solution was most effective eluent for W