Energy Flux of Solar Plasma in a Sectorial Structure of the Interplanetary Magnetic Field

Energy flux values calculated for solar plasma in sectorial structure of interplanetary magnetic fiel

Design of the thermal fields by electro-impulse lathe hardening in programmatic complex of ANSYS

Проаналізовано результат моделювання у програмному комплексі ANSYS, що дозволило аналітичним методом визначити вплив технологічних факторів на глибину зміцненого шару при ЕІЗТ, а також отримати математичну модель для порівняння з експериментальними результатами.The analysis of results of design in the programmatic complex of ANSYS allowed by an analytical method to define influence of technological factors on the depth of the hardening layer at the EILH, and also to get a mathematical model for comparison with experimental results

Development of university complex as condition for increase quality training of expert

В статье проанализирован уникальный опыт развития высшей школы, основанный на интеграции образования и науки в региональном университетском комплексе Оренбургского государственного университета. Определены основные принципы разработки стратегии региональных университетских комплексов, представлены перспективные направления их развития.Integration of science and education, being taken as the basis of the regional university complex at Orenburg state university was analysed in this article. Strategies of the regional university complexes and the main principles of their elaboration as well as perspectives of their development have become the topic of the article

Study of the electromagnetic processes in converter with four zoned regulations of the voltage

The article deals with electromagnetic processes in electric circuits with semiconductor switches. A mathematical model of a semiconductor converter with four-zone output voltage control has been created so as to analyse electromagnetic processes in semiconductor converters with pulse-width control. The graphs showing electromagnetic processes in electric circuits are given

The character of fracture of iron based thermal coating during fretting

The character of destruction of thermal coatings during fretting has been investigated. An iron based plasma coating has been tested with oscillation amplitude from 30 to 200 microns. The tests were conducted in air. It has been determined that the main factor influencing the rate of the wear of the coating during fretting corrosion is the size of the coating area involved into the wear process. The coating exhibits high wear resistance when the amplitude of the oscillation is commensurate with the size of the sprayed particles. During destruction of the coating the leading role belongs to fatigue-oxidation processes. The wear of the coating acquires a catastrophic character when coating macro defects - pores and interlayer boundaries - are involved into the wear process

Structural basis for the nuclease activity of a bacteriophage large terminase

The DNA-packaging motor in tailed bacteriophages requires nuclease activity to ensure that the genome is packaged correctly. This nuclease activity is tightly regulated as the enzyme is inactive for the duration of DNA translocation. Here, we report the X-ray structure of the large terminase nuclease domain from bacteriophage SPP1. Similarity with the RNase H family endonucleases allowed interactions with the DNA to be predicted. A structure-based alignment with the distantly related T4 gp17 terminase shows the conservation of an extended β-sheet and an auxiliary β-hairpin that are not found in other RNase H family proteins. The model with DNA suggests that the β-hairpin partly blocks the active site, and in vivo activity assays show that the nuclease domain is not functional in the absence of the ATPase domain. Here, we propose that the nuclease activity is regulated by movement of the β-hairpin, altering active site access and the orientation of catalytically essential residues

Mortality research of the population living in area of the arrangement of the enterprise for mining and ore dressing of chrysotile asbestos

Research of mortality of the Asbestos city (Sverdlovsk region of the Russian Federation) population from 1997 for 2006 is conducted. The main enterprise is the world's largest chrysotile asbestos mining and milling enterprise on which the basic part от working citizens is occupied. It is not revealed significant distinctions in frequency of death from malignant tumors of respiratory organs, a lip, a mouth, pharynx among persons of the able-bodied age, living Asbestos city and in Sverdlovsk region. Higher death rates from malignant tumors of the man’s and female population of all age in Asbestos city in comparison with Sverdlovsk region are formed at the expense of persons of the senior age groups.Проведено исследование смертности населения моногорода Асбест, расположенного в Свердловской области за период с 1997 по 2006 год. Градообразующим предприятием является ОАО «Ураласбест», крупнейшее в мире предприятие по добыче и обогащению хризотилового асбеста, на котором занята основная часть работающих граждан города. Не выявлено значимых различий в частоте смерти от злокачественных новообразований органов дыхания, губы, рта, глотки среди лиц трудоспособного возраста, проживающих г. Асбесте и в Свердловской области. Более высокие уровни смертности от злокачественных новообразований мужского и женского населения всех возрастов в г. Асбесте по сравнению со Свердловской областью формируются за счет лиц старших возрастных групп