Online effects of beta-tACS over the left prefrontal cortex on phonological decisions

The left posterior inferior frontal gyrus in the prefrontal cortex is a key region for phonological aspects of language processing. A previous study has shown that alpha-tACS over the prefrontal cortex applied before task processing facilitated phonological decision-making and increased task-related theta power. However, it is unclear how alpha-tACS affects phonological processing when applied directly during the task. Moreover, the frequency specificity of this effect is also unclear since the majority of neurostimulation studies tested a single frequency only. The present study addressed the question whether and how 10 Hz online tACS affects phonological decisions. To this end, 24 healthy participants received tACS at 10 Hz or 16.18 Hz (control frequency) or sham stimulation over the left prefrontal cortex during task processing in three sessions. As an unexpected finding, 16.18 Hz significantly impaired task accuracy relative to sham stimulation, without affecting response speed. There was no significant difference in phonological task performance between 10 Hz and 16.18 Hz tACS or between 10 Hz and sham stimulation. Our results support the functional relevance of the left prefrontal cortex for phonological decisions and suggest that online beta-tACS may modulate language comprehension

Transport and retention of artificial and real wastewater particles inside a bed of settled aerobic granular sludge assessed applying magnetic resonance imaging

The removal or degradation of particulate organic matter is a crucial part in biological wastewater treatment. This is even more valid with respect to aerobic granular sludge and the impact of particulate organic matter on the formation and stability of the entire granulation process. Before the organic part of the particulate matter can be hydrolyzed and finally degraded by the microorganism, the particles have to be transported towards and retained within the granulated biomass. The understanding of these processes is currently very limited. Thus, the present study aimed at visualizing the transport of particulate organic matter into and through an aerobic granular sludge bed. Magnetic Resonance Imaging (MRI) was successfully applied to resolve the different fractions of a granular sludge bed over time and space. Quantification and merging of 3D data sets allowed for a clear determination of the particle distribution within the granular sludge bed. Dextran coated super paramagnetic iron oxide nanoparticles (SPIONs

Исследование парогазовой установки, работающей на генераторном газе

Выпускная квалификационная работа 116 страниц, 25 рисунков, 25 таблиц, 35 источников, 2 приложения. Ключевые слова: газификация угля, парогазовая установка, газотурбинная установка, генераторный газ, анализ, котел-утилизатор, показатели эффективности. Объектом исследования является ПГУ, работающая на генераторном газе. Цель работы – анализ работоспособности такой ПГУ с ГТУ, работающей на генераторном газе. В процессе исследования проводилось изучение различных способов газификации угля; производился выбор расчетной схемы ПГУ с газификацией; проводился расчет состава и характеристик генераторного газа и определение основных показателей тепловой эффективности ПГУ. В результате исследования был сделан анализ эффективности работы парогазовой установки.Final qualifying work of 116 pages, 25 figures, 25 tables, 35 sources, 2 annexes. Keywords: coal gasification combined cycle plant, a gas turbine plant, the product gas analysis, waste heat boiler, performance indicators. The object of this study is to CCGT running on syngas. The purpose of work - performance analysis of a CCGT with a gas turbine, operating on syngas. The study was carried out to study different methods of coal gasification; selects the estimated PSU circuit with gasification; conducted calculation and composition of the product gas characteristics and the definition of the main indicators of the thermal efficiency of the CCGT. The survey was made the analysis of the efficiency of the combined-cycle plant

Liver transplantation for glycogen storage disease types I, III, and IV

Glycogen storage disease (GSD) types I, III, and IV can be associated with severe liver disease. The possible development of hepatocellular carcinoma and/or hepatic failure make these GSDs potential candidates for liver transplantation. Early diagnosis and initiation of effective dietary therapy have dramatically improved the outcome of GSD type I by reducing the incidence of liver adenoma and renal insufficiency. Nine type I and 3 type III patients have received liver transplants because of poor metabolic control, multiple liver adenomas, or progressive liver failure. Metabolic abnormalities were corrected in all GSD type I and type III patients, while catch-up growth was reported only in two patients. Whether liver transplantation results in reversal and/or prevention of renal disease remains unclear. Neutropenia persisted in both GSDIb patients post liver transplantation necessitating continuous granulocyte colony stimulating factor treatment. Thirteen GSD type IV patients were liver transplanted because of progressive liver cirrhosis and failure. All but one patient have not had neuromuscular or cardiac complications during follow-up periods for as long as 13 years. Four have died within a week and 5 years after transplantation. Caution should be taken in selecting GSD type IV candidates for liver transplantation because of the variable phenotype, which may include life-limiting extrahepatic manifestations. It remains to be evaluated, whether a genotype-phenotype correlation exists for GSD type IV, which may aid in the decision making. Conclusion Liver transplantation should be considered for patients with glycogen storage disease who have developed liver malignancy or hepatic failure, and for type IV patients with the classical and progressive hepatic form

Управление операциями с пластиковыми картами в коммерческом банке

Работа посвящена управлению операциями с банковскими картами в коммерческом банке. Рассматриваются виды банковских карт, классификация операций с ними и изучение современных тенденций развития пластиковых карт в Российской Федерации. В конце работы даются рекомендации по развитию операций с пластиковыми картами в коммерческом банке.The work is dedicated to the management of card transactions in the commercial bank. Consider the types of bank cards , the classification of transactions with them and study modern trends in the development of plastic cards in the Russian Federation . At the end of the paper provides recommendations on the development of operations with plastic cards in a commercial bank

Анализ метрологического обеспечения системы измерений количества и показателей качества нефти СИКН-25-РК-А002 на нефтеперекачивающей станции "Кропоткинская"

Объектом исследования является метрологическое обеспечение системы измерений количества и показателей качества нефти СИКН-25-РК-А002 на нефтеперекачивающей станции "Кропоткинская". Цель работы – проведение анализа обеспечения единства измерений на нефтеперекачивающей станции “Кропоткинская”. Для достижения цели работы были поставлены следующие задачи: рассмотреть обеспечение единства измерений системы измерений на НПС “Кропоткинская” и определить её погрешность в зависимости от условий эксплуатации и транспортируемой среды; рассчитать погрешность измерений массы нетто товарной нефти с помощью СИКН № 59462 НПС “Кропоткинская” и проанализировать её составляющие; рассмотреть безопасные условия эксплуатации НПС “Кропоткинская”.Object of research is metrological providing an oil quantity and quality measuring system of SIKN-25-RK-A002 at oil pumping station "Kropotkinskaya". The work purpose – carrying out the analysis of ensuring unity of measurements at oil pumping station "Kropotkinskaya". For goal achievement of work the following tasks have been set: to consider ensuring unity of measurements of measuring system on NPS "Kropotkinskaya" and to determine its error depending on service conditions and the transported environment; to calculate an error of measurements of net weight of commodity oil by means of SIKN No. 59462 NPS "Kropotkinskaya" and to analyse its components; to consider safe service conditions of NPS "Kropotkinskaya"