Autoresonance in a Dissipative System

We study the autoresonant solution of Duffing's equation in the presence of dissipation. This solution is proved to be an attracting set. We evaluate the maximal amplitude of the autoresonant solution and the time of transition from autoresonant growth of the amplitude to the mode of fast oscillations. Analytical results are illustrated by numerical simulations.Comment: 22 pages, 3 figure

Research and development of hydro-mechanical differential variator

The author has carried out the analysis of dynamic-coupled automatic transmissions and regarded the prospects of their application and development. New design of continuously variable transmission based on differential hydra-mechanical gear train was developed and covered by RF patents No2298125 and No2347966. Principles of work performance for high-torque differential hydra-mechanical gear train based on interoperation equableness of moments opposing one another that are produced at the gear carrier owing to inner forces of differential stages as well as self-actuated pressure variation and hydraulic fluid consumption change when it comes through hydraulic pump and hydraulic actuator

Cytokine Profile of Patients with Allergic Rhinitis Caused by Pollen, Mite, and Microbial Allergen Sensitization

© 2017 Yury A. Tyurin et al. Allergic rhinitis (AR) is especially prevalent among the population of large cities. Immunologically, the airway epithelium is a region where the population of allergen-presenting cells concentrates. These cells actively express a group of receptors of the innate immune system. A specific cytokine profile is its representation. The study was aimed at evaluating the cytokine profile in patients with seasonal and perennial allergic rhinitis. The cytokine profile of nasal secretion and blood serum of 44 patients with AR was studied. 24 of them had seasonal allergic rhinitis (SAR), and 20 patients suffered from perennial allergic rhinitis (PAR). The patients' age ranged from 4 to 60 years. It was determined in our study that the activation of the GM-CSF production retained in patients with PAR sensitized to mite allergen components (Dermatophagoides pteronyssinus). There was a higher production profile of TNF-α and TSLP in nasal secretion in the patients with perennial allergic rhinitis and additional high sensitization to SEs. Sensitization to mold fungal allergen components significantly increases in patients with seasonal allergic rhinitis. They demonstrated high level of sensitization to the Aspergillus fumigatus component m3. Thus, along with other clinical trials, the study performed would clarify some aspects of molecular pathogenesis of human allergic rhinitis

PHASE COMPOSITION OF THE Co–10Al–9W ALLOY

В работе приведены результаты теоретического расчета фазовой диаграммы тройной системы Co–Al–W с использованием программного обеспечения Thermo-Calc Software, а также металлографических и рентгеновских исследований образцов сплава Co–10Al–9W после различных режимов обработки.The calculation phase diagram of the Co–Al–W system was carried out by the Thermo-Calc Software. Metallographic and X-ray investigations of the Co– 10Al–9W alloy simples after different thermomechanical treatments are performed

THE PHASE CONTENT OF INTERMETALLIC OF TI - NB –AL SYSTEM COMPOSITE

Изучена возможность получения интерметаллидных композитов системы Ti-Nb-Al методом искрового плазменного спекания. Материалом служили фольги сплава ВТИ4 и Al. Синтез производился в два этапа: 1 этап, 600°С, выдержки 0, 2, 6 часов; 2 этап, 900 - 1100 °С, 0,5 часа. В работе приведены микроструктуры, концентрационные профили перераспределения элементов, фазовый состав композитов. Получена высокая сплошность соединения при отсутствии трещин. Продемонстрирована возможность регулирования фазового состава за счет механического введения алюминия в ходе спекания.The possibility of obtaining the intermetallic composites of the system Ti-Nb-Al by spark plasma sintering was studied. The material was a foil of alloy VTI4 and Al. The synthesis was carried out in two stages: stage 1 T=600°C, exposure for 0, 2 or 6 h; stage 2 T= 900 … 1100°C, 0.5 h. Microstructures, the concentration profiles of elements, the phase composition of samples are presented. The possibility of controlling phase composition through the mechanical introduction of aluminium during sintering was demonstrated.Работа выполнена при поддержке гранта Президента Российской Федерации МК-7923.2016.8

Analysis of the epidemiological situation on the natural focal zooantroponozam Begional Infectious Pathology in the Republic of Tatarstan. Ixodes tick-borne Lyme disease. Ehrlichiosis and anaplasmosis. Hemorragic fever with renal syndrome (HFRS)

The study of long-term indicators of the level, structure and dynamics of the incidence of HFRS in the territory of the Republic of Tatarstan has shown that it has a wavy character with a tendency to increase and stabilize at a high level. Geographical spread of the infection is characterized by marked unevenness: the bulk of cases - 98% are landscape- geographical zones and Zakamye Predvolzhja. Analysis of the incidence of infection conditions showed that pockets of forest and dominated by household type, which accounted for 69% of morbidity. The continuing high incidence of HFRS in the Republic of Tatarstan for further study of the causes and conditions for the spread of infection to the development of a set of measures to prevent and reduce morbidity.Изучение многолетних показателей уровня, структуры и динамики заболеваемости ГЛПС на территории Республики Татарстан показал, что она имеет волнообразный характер с тенденцией к росту и стабилизации на высоком уровне. Территориальное распространение инфекции характеризуется выраженной неравномерностью: основная доля заболевших - 98% приходится на ландшафтно-географические зоны Закамья и Предволжья. Анализ заболеваемости по условиям заражения показал, что преобладают очаги лесного и бытового типа, на долю которых приходится 69% всей заболеваемости. Сохраняющийся высокий уровень заболеваемости ГЛПС в Республике Татарстан требует дальнейшего изучения причин и условий распространения инфекции для разработки комплекса мероприятий по предупреждению и снижению заболеваемости

Research and development of hydro-mechanical differential variator

The author has carried out the analysis of dynamic-coupled automatic transmissions and regarded the prospects of their application and development. New design of continuously variable transmission based on differential hydra-mechanical gear train was developed and covered by RF patents No2298125 and No2347966. Principles of work performance for high-torque differential hydra-mechanical gear train based on interoperation equableness of moments opposing one another that are produced at the gear carrier owing to inner forces of differential stages as well as self-actuated pressure variation and hydraulic fluid consumption change when it comes through hydraulic pump and hydraulic actuator

Research and development of hydro-mechanical differential variator

The author has carried out the analysis of dynamic-coupled automatic transmissions and regarded the prospects of their application and development. New design of continuously variable transmission based on differential hydra-mechanical gear train was developed and covered by RF patents No2298125 and No2347966. Principles of work performance for high-torque differential hydra-mechanical gear train based on interoperation equableness of moments opposing one another that are produced at the gear carrier owing to inner forces of differential stages as well as self-actuated pressure variation and hydraulic fluid consumption change when it comes through hydraulic pump and hydraulic actuator

Research and development of hydro-mechanical differential variator

The author has carried out the analysis of dynamic-coupled automatic transmissions and regarded the prospects of their application and development. New design of continuously variable transmission based on differential hydra-mechanical gear train was developed and covered by RF patents No2298125 and No2347966. Principles of work performance for high-torque differential hydra-mechanical gear train based on interoperation equableness of moments opposing one another that are produced at the gear carrier owing to inner forces of differential stages as well as self-actuated pressure variation and hydraulic fluid consumption change when it comes through hydraulic pump and hydraulic actuator