Relationship of type III radio bursts with quasi-periodic pulsations in a solar flare

We studied a solar flare with pronounced quasi-periodic pulsations detected in the microwave, X-ray, and radio bands. We used correlation, Fourier, and wavelet analyses methods to examine the temporal fine structures and relationships between the time profiles in each wave band. We found that the time profiles of the microwaves, hard X-rays, and type III radio bursts vary quasi-periodically with a common period of 40 – 50 s. The average amplitude of the variations is high, above 30 % of the background flux level, and reaches 80 % after the flare maximum. We did not find this periodicity in either the thermal X-ray flux component or in the source size dynamics. Our findings indicate that the detected periodicity is probably associated with periodic dynamics in the injection of non-thermal electrons, which can be produced by periodic modulation of magnetic reconnection

Quasi-periodic pulsations in the gamma-ray emission of a solar flare

Quasi-periodic pulsations (QPPs) of gamma-ray emission with a period of about 40 s are found in a single loop X-class solar flare on 2005 January 1 at photon energies up to 2-6 MeV with the SOlar Neutrons and Gamma-rays (SONG) experiment aboard the CORONAS-F mission. The oscillations are also found to be present in the microwave emission detected with the Nobeyama Radioheliograph, and in the hard X-ray and low energy gamma-ray channels of RHESSI. Periodogram and correlation analysis shows that the 40 s QPPs of microwave, hard X-ray, and gamma-ray emission are almost synchronous in all observation bands. Analysis of the spatial structure of hard X-ray and low energy (80-225 keV) gamma-ray QPP with RHESSI reveals synchronous while asymmetric QPP at both footpoints of the flaring loop. The difference between the averaged hard X-ray fluxes coming from the two footpoint sources is found to oscillate with a period of about 13 s for five cycles in the highest emission stage of the flare. The proposed mechanism generating the 40 s QPP is a triggering of magnetic reconnection by a kink oscillation in a nearby loop. The 13 s periodicity could be produced by the second harmonics of the sausage mode of the flaring loop

Quasi-periodic pulsations in the gamma-ray emission of a solar flare

Copyright © 2010 American Astronomical Society / IOP PublishingQuasi-periodic pulsations (QPPs) of gamma-ray emission with a period of about 40 s are found in a single loop X-class solar flare on 2005 January 1 at photon energies up to 2-6 MeV with the SOlar Neutrons and Gamma-rays (SONG) experiment aboard the CORONAS-F mission. The oscillations are also found to be present in the microwave emission detected with the Nobeyama Radioheliograph, and in the hard X-ray and low energy gamma-ray channels of RHESSI. Periodogram and correlation analysis shows that the 40 s QPPs of microwave, hard X-ray, and gamma-ray emission are almost synchronous in all observation bands. Analysis of the spatial structure of hard X-ray and low energy (80-225 keV) gamma-ray QPP with RHESSI reveals synchronous while asymmetric QPP at both footpoints of the flaring loop. The difference between the averaged hard X-ray fluxes coming from the two footpoint sources is found to oscillate with a period of about 13 s for five cycles in the highest emission stage of the flare. The proposed mechanism generating the 40 s QPP is a triggering of magnetic reconnection by a kink oscillation in a nearby loop. The 13 s periodicity could be produced by the second harmonics of the sausage mode of the flaring loop

Properties of quasi-periodic pulsations in solar flares from a single active region

We investigate the properties of a set of solar flares originating from a single active region (AR) that exhibit QPPs, and look for signs of the QPP periods relating to AR properties. The AR studied, best known as NOAA 12192, was unusually long-lived and produced 181 flares. Data from the GOES, EVE, Fermi, Vernov and NoRH observatories were used to determine if QPPs were present in the flares. For the soft X-ray GOES and EVE data, the time derivative of the signal was used. Power spectra of the time series data (without any form of detrending) were inspected, and flares with a peak above the 95% confidence level in the spectrum were labelled as having candidate QPPs. The confidence levels were determined taking account of uncertainties and the possible presence of red noise. AR properties were determined using HMI line of sight magnetograms. A total of 37 flares (20% of the sample) show good evidence of having QPPs, and some of the pulsations can be seen in data from multiple instruments and in different wavebands. The QPP periods show a weak correlation with the flare amplitude and duration, but this may be due to an observational bias. A stronger correlation was found between the QPP period and duration of the QPP signal, which can be partially but not entirely explained by observational constraints. No correlations were found with the AR area, bipole separation, or average magnetic field strength. The fact that a substantial fraction of the flare sample showed evidence of QPPs using a strict detection method with minimal processing of the data demonstrates that these QPPs are a real phenomenon, which cannot be explained by the presence of red noise or the superposition of multiple unrelated flares. The lack of correlation between the QPP periods and AR properties implies that the small-scale structure of the AR is important, and/or that different QPP mechanisms act in different cases.Comment: 23 pages, 57 figures. Accepted for publication by Astronomy & Astrophysic

ОСОБЛИВОСТІ ВЗАЄМОВІДНОШЕНЬ ПОКАЗНИКІВ ЛІПІДНОГО, ВУГЛЕВОДНОГО ОБМІНІВ ТА РІЗНИХ ТИПІВ ПОДАГРИЧНОЇ НЕФРОПАТІЇ

За прошлые несколько десятилетий распространенность подагры возросла. Этот факт побуждает к доскональному изучению взаимосвязей поражения внутренних органов и дисбаланса обмена веществ. Под наблюдением находился 91 мужчина в возрасте 36-71 год с первичной подагрой. Исследованы некоторые взаимоотношения показателей липидного, вуглеводного обменов, функции почек и типов нефропатии. Виявлено влияние нарушений жирового обмела и параметров холестеринемии на клиренс креатинина с одновременным влиянием степени нарушения клубочковой фильтрации на показатели липидного обмена. Тяжесть МС, степень инсулинорезистентности, тип гиперлипидмии и отдельные показатели жирового обмена определяют параметры мочевого синдрома

IMPROVING THE USER EXPERIENCE OF FINANCIAL TECHNOLOGY IT SERVICES BASED ON UX/UI RESEARCH

In today’s dynamic fintech environment, user requirements are constantly changing, and digital services need to be developed and adapted to meet their expectations and needs. UI/UX research technologies and methods provide rich opportunities to study user preferences and identify problems and shortcomings in existing digital services. The main aspects of improving the user experience of the mobile bank were reviewed. Recommendations were made for the further development of the IT service. The purpose of this article is to examine the main aspects of improving the user experience and to formulate recommendations for the development of IT services in the banking sector. Research methodology – at the first stage, an analysis of user behavior in fintech was carried out: a study of user expectations and preferences in the field of digital financial services. Then user experience was analyzed and UI/UX studies were conducted for the ‘Notification Center’ of the bank’s mobile application. The final stage of the study was to evaluate the effectiveness of the redesign project of the Notification Centre section of the bank's mobile application and to formulate recommendations for the further development of the mobile application.The research conducted has shown the practical importance of improving the user experience of the bank’s mobile application, which consists of improving usability, increasing customer satisfaction and improving the overall impression of banking services. This leads to increased conversion, customer retention and increased loyalty to the bank.Improving the user experience of the bank’s mobile application makes it possible to increase the efficiency of the bank’s employees, reduce the burden on the customer support department and reduce the number of errors when performing routine operations or actions. This not only optimises the bank’s internal processes, but also helps to improve the overall quality of service, which has a particular impact on the bank’s reputation, competitiveness and financial performance

Analysis of the Earth's magnetosphere states using the algorithm of adaptive construction of hierarchical neural network classifiers

This paper presents analysis of the results of clusterization of the array of increases in the flux of relativistic electrons in the outer radiation belt of the Earth by two clustering algorithms. One of them is the algorithm for adaptive construction of hierarchical neural network classifiers developed by the authors, applied in clustering mode; the other one is the well-known k-means clusterization algorithm. The obtained clusters are analysed from the point of view of their possible matching to characteristic types of events, the partitions obtained by both methods are compared with each other

Анализ иммунохимических показателей при вертеброгенном болевом синдроме

The immune system can react to pain by synthesis of the natural antibodies to pain-regulating mediators which affec t the nervous system. In this study, the analysis of content antibodies to opioid peptides (β-endorphin and orphanin FQ) and biogenic amines (serotonin and dopamine) in vertebrogenic pain syndrome (PS) was carries out in serum of PS patients. It has been found that this PS is accompanied by an increase in the production of antibodies to the neurotransmitters studied, and the immune response to opioid peptides is more profound than to biogenic amines. The antibodies levels were higher in female patients than in males (especially for orphanin FQ). These data indirectly correlate with the PS intensity and the dynamics of its regression, evaluated using a visual analogue scale (VAS). Thus, the pain intensity measured by VAS in women was higher, in compare with men and the dynamics of decrease was lower. In addition, it was found that during the significant decrease of the pain intensity, there was no significant decrease in antibody levels to antinociceptive mediators. Apparently, this observation indicates the antibodies to antinociceptive mediators can effect the mechanisms of transition from acute to chronic pain and in maintenance of chronic pain.Иммунная система может реагировать на боль образованием антител к медиаторам, регулирующим болевой сигнал, и через них влиять на нервную систему. В данной работе был проведен анализ содержания антител к опиоидным пептидам (β-эндофину и орфанину) и биогенным аминам (серотонину и дофамину) при вертеброгенном болевом синдроме (БС). Установлено, что данный БС сопровождается повышением продукции антител к исследуемым нейромедиаторам, причём к опиоидным пептидам иммунный ответ более выражен, чем к биогенным аминам. У женщин показатели содержания антител выше, чем у мужчин, особенно к орфанину. Эти данные косвенно коррелируют с показателями интенсивности БС и динамики его регресса, оценку которой проводили по визуально-аналоговой шкале (ВАШ). Так обнаружено, что интенсивность боли по ВАШ у женщин была выше, чем у мужчин, и динамика регресса ниже. На фоне достоверного снижения интенсивности БС не происходит значимого снижения уровней антител к антиноцицептивным медиаторам. По-видимому, это наблюдение указывает на влияние данных антител на процессы хронизации и поддержания болевого состояния

Structural characteristic’s facial skeleton and changes resulting from treatment with different methods in patients with skeletal mesial bite

Introduction: Mesial occlusion is one of the most complex maxillo-facial anomalies. Despite the advances of modem orthodontics, its diagnosis and treatment remains a lot of troubles. Target’s: 1. Determine the morphological features of dental system in patients with skeletal mesial bite, with completed skeletal growth. 2. To study the changes occurring in patients as a result of treatment by various methods according to the side telerentgenogramm. Results and discussion: We found that all patients had a discrepancy in the size of the jaws. Also increase the size of the lower face height and dominated line profile. Twenty patients received orthodontic treatment by the method of Dent-alveolar compensation. After treatment was noted that indicators craniometry, gnatometrii not significantly changed. Significant differences were observed only in the position of incisors.Ten patients were conducted combined orthodontist-surgical treatment using in-plane sliding osteotomy of the mandible with a shift back to H. Obwegeser [2]. As a result of treatment of patients significantly modify craniometry and gnatometrii, options profilometry also changed. Conclusions: 1. Patients with skeletal mesial bite, there is considerable morphological violations in all structures of the maxillofacial region. 2. Available skeletal abnormalities adversely affect the aesthetics of the face [3]. 3. Method dento-alveolar compensation fails to achieve a good aesthetic and functional results.4. The method combined an orthodontist and surgical treatment provides the best results: eliminating the pathogenesis of the anomalies are normalized occlusal contacts, changing direction and position of occlusal plane.Мезиальная окклюзия одна из самых сложных челюстно-лицевых аномалий, её диагностика и лечение остается трудной задачей. Цели исследования: 1. Определить морфологические особенности зубочелюстной системы у пациентов со скелетным мезиальным прикусом, с завершенным скелетным ростом. 2. Изучить изменения, происходящих у пациентов в результате лечения различными методами по данным боковых телерентгенограмм головы (ТРГ). Результаты исследования: 20 пациентов прошли лечение методом денто-альвеолярной компенсации, после лечения показатели краниометрии, гнатометрии достоверно не изменялись. Достоверные различия наблюдались только в положении резцов. 10 пациентам проведено комбинированным ортодонто-хирургическим методом с использованием плоскостной скользящей остеотомии нижней челюсти со смещением назад по Н. Obwegeser. В результате проведенного лечения у пациентов достоверно изменялись параметры краниометрии, гнатометрии и профилометрии. Выводы: 1. У пациентов со скелетным мезиальным прикусом имеются значительные морфологические нарушения во всех структурах челюстно-лицевой области. эстетике лица. 2. Метод дентоальвеолярной компенсации улучшает окклюзию зубных рядов, 3. Метод комбинированного ортодонто-хирургического лечения обеспечивает лучшие результаты: устраняется патогенез аномалии, нормализуются положение резцов верхней и нижней челюсти, окклюзионные контакты, положение окклюзионной плоскости