Modeling the structure and formation of the oil and gas potential of Riphean-Vendian deposits that belong to north-east regions of the Volga-Ural oil and gas province

The paper is devoted to the urgent problem of studying the prospects of the oil and gas potential of Riphean-Vendian sediments of poorly studied areas such as northeastern regions of the Volga-Ural oil and gas province. The paper presents the characteristic of the lithological and stratigraphic features of the structure of Riphean and Vendian deposits in the northeastern part of the Volga-Ural oil and gas province. Particular attention is paid to the basin modeling of well sections that did not fully passed through the Riphean-Vendian complex of rocks.That allows to predict oil and gas generation processes. During the research sections of three wells were modelled. Wells Keltmenskaya-1, Krasnovisherskaya-18, Borovitskaya-624 revealed Upper Proterozoic rocks in the north-east of the Perm region and the Komi Republic. Procedure features of the used software systems, phasing of the research, including gathering and input of initial data, processing of parameters, calculation and calibration of models are given. Certain challenges associated with modeling the conditions of oil and gas formation and oil and gas accumulation of Riphean and Vendian sediments of this territory are associated with insufficient information on the structure and composition of sediments, incomplete drilling of ancient sediments in wells and inconsistent geophysical data. In addition, the complexity of the reconstruction lies in the lack of information about geothermal conditions of sections, numerous interruptions in sedimentation and erosion of sediments. According to simulation results, most of the Riphean-Vendian sedimentary section is located in the main zone of oil generation. The research conducted allowed the authors to conclude that there are increased prospects to discover oil hydrocarbons in a wide range of depths in the areas where the Krasnovisherskaya-18 and Borovitskaya-624 wells are drilled. There is a little likelihood that gaseous hydrocarbons can be found in the section. Conducted research and obtained results pose a problem for the development of geological exploration in the poorly studied areas of the northeast of the Volga-Ural oil and gas province. First of all, that corresponds to reference-parametric drilling together with the zonal-regional geophysical studies

Возможность снижения лучевой нагрузки на пациентов за счет оптимизации протокола компьютерной томографии органов брюшной полости и забрюшинного пространства в зависимости от нозологии злокачественного процесса

Reducing radiation exposure in computed tomography is a relevant medical task due to the growing number of studies and the lack of generally accepted approaches to their conduct in the radiological community. One way to reduce the effective dose in contrast-enhanced computed tomography of the abdomen is to optimize the protocol of examination, which can include four scans: in the native, arterial, venous and delayed phases. However while providing repeated studies in patients with oncological diseases, it is possible to confine one or two phases, which will allow the radiologist to visualize observed pathological changes and to evaluate the response to the treatment, as well as detect the recurrence in case of the monitoring of the patients. In the present study, two groups were formed on the basis of a sample of 514 patients. In group 1 (control), CTB was performed according to a three- or four-phase protocol. In group 2, the same patients with an interval from 1 to 5.5 months were performed with computed tomography -OBP according to a single or two-phase protocol depending on the degree of vascularization of the tumor tissue and the clinical situation. At the same time, a decrease in the average effective dose in patients in group 2 compared with group 1 was demonstrated by 63% (p<0.05). In all cases, the various pathological changes that characterize the oncological process and were diagnosed with a three- or four-phase protocol were visualized with a single- or two-phase protocol. Thus, the informative value of computed tomography examination did not decrease.Снижение лучевой нагрузки при компьютерной томографии является актуальной медицинской задачей в связи с ростом количества исследований и отсутствием общепринятых подходов при повторных исследованиях у онкологических пациентов. В работах различных авторов продемонстрирована целесообразность ограничения протокола компьютерной томографии одной или двумя фазами сканирования при повторных исследованиях у пациентов с онкологическими заболеваниями без потери диагностической информации. В настоящей работе на основе выборки из 514 пациентов были сформированы две группы. В 1 группе (контрольная) пациентам проводилась компьютерная томография органов брюшной полости по трех- или четырехфазному протоколу. Во 2 группе этим же пациентам с интервалом от 1 до 5,5 месяцев проводилась компьютерная томография органов брюшной полости по одноили двухфазному протоколу в зависимости от степени васкуляризации опухолевой ткани и клинической ситуации. При этом было продемонстрировано снижение средней эффективной дозы у пациентов в группе 2 по сравнению с группой 1 на 63% (p<0,05). Во всех случаях различные патологические изменения, характеризующие онкологический процесс и диагностированные при трех- или четырехфазном протоколе, были визуализированы и при одно- или двухфазном протоколе. Таким образом, информативность компьютерной томографии не снижалась

Оцінка ефективності нового статистичного ієрархічного агломеративного алгоритму кластеризації для розпізнавання регіонів зображень

The new hierarchical aglomerative algorithm for cluster (region) recognition of images is considered. The analysis of the processing speed of the suggested algorithm and most widespread k-means algorithm is proposed. The evaluations of image clusterization quality are introduced.Рассматривается новый иерархический агломеративный алгоритм выделения кластеров (регионов) изображений. Приводится анализ быстродействия предлагаемого алгоритма в сравнении с наиболее распространенным алгоритмом k-means кластеризации. Вводятся оценки качества кластеризации изображений.Розглядається новий ієрархічний агломеративний алгоритм виділення кластерів (регіонів) зображень. Надається аналіз швидкодії пропонованого алгоритму у порівнянні з найбільш поширеним алгоритмом k-means кластеризації. Вводяться оцінки якості кластеризації зображень

Higher engineering education at DonNTU: from tradition to innovation

Research goals: to explore the possibility of a mixed model of learning at a technical university. Research objectives: to explore the use of innovative IT technologies; to apply innovative pedagogical model for teaching undergraduates and specialists in technical training areas and specialties. The object of research is the organization of the educational process. The blended model of learning is the subject of the research. Research methods used: a survey and experimental research. The result of the research is the preparation and conduct of the pedagogical experiment on the use of blended learning at the technical university. As a result, the preparation of pedagogical experiment electronic cases of disciplines were developed, engineering and organizational support for access to the corporate network and the Internet, online services for student interaction with faculty and self-control were provided. The main conclusions and recommendations. Experience of the experiment can be recommended for the synthesis and the formation of the Ministry of Education and Science proposals to amend the norms of teaching load while using of the innovative learning technologies

Possibilities of Computed Tomography in the Planning of Inferior Vena Cava Resection in Patients with Liver Alveococcosis

Objective.  To estimate the informative value of computed tomography (CT) in the planning of inferior vena cava (IVC) resection in patients with alveococcosis of the liver on the basis of the extent of contact of parasitic masses with its wall around the circumference.Material and methods. CT studies and surgery protocols were retrospectively analyzed in patients with liver alveococcosis in the period between 2014 and 2017.Results. The CT-measured extent of contact of parasitic masses along the circumference of IVC was compared with the intraoperative pattern for its involvement and with resection volume data. CT findings show that circular resection was not required in contact of parasitic mass with the IVC wall  over a 90° stretch; the resection could be performed in 29, 86, and 100% of patients in contact over 180, 270, 360° stretches, respectively.Conclusion. CT can assess whether there may be IVC invasion when planning a surgical intervention.  The threshold value of the extent of contact of parasitic masses with IVC, as evidenced by CT, is 180°, at which the possibility of circular resection and vein prosthesis should be considered

Prospects for the reduction of the patient doses based on the optimization of the CT abdomen protocols for the different types of malignancies

Reducing radiation exposure in computed tomography is a relevant medical task due to the growing number of studies and the lack of generally accepted approaches to their conduct in the radiological community. One way to reduce the effective dose in contrast-enhanced computed tomography of the abdomen is to optimize the protocol of examination, which can include four scans: in the native, arterial, venous and delayed phases. However while providing repeated studies in patients with oncological diseases, it is possible to confine one or two phases, which will allow the radiologist to visualize observed pathological changes and to evaluate the response to the treatment, as well as detect the recurrence in case of the monitoring of the patients. In the present study, two groups were formed on the basis of a sample of 514 patients. In group 1 (control), CTB was performed according to a three- or four-phase protocol. In group 2, the same patients with an interval from 1 to 5.5 months were performed with computed tomography -OBP according to a single or two-phase protocol depending on the degree of vascularization of the tumor tissue and the clinical situation. At the same time, a decrease in the average effective dose in patients in group 2 compared with group 1 was demonstrated by 63% (p<0.05). In all cases, the various pathological changes that characterize the oncological process and were diagnosed with a three- or four-phase protocol were visualized with a single- or two-phase protocol. Thus, the informative value of computed tomography examination did not decrease