Cool spots on the surface of the active giant PZ Mon

Based on the multiband (BVRIJHKL) photometric observations of the active red giant PZ Mon performed for the first time in the winter season of 2017-2018, we have determined the main characteristics of the spotted stellar surface in a parametric three-spot model. The unspotted surface temperature is Teff=4730 K, the temperature of the cool spots is Tspot=3500 K, their relative area is about 41%, and the temperature of the warm spots is Twarm=4500 K with a maximum relative area up to 20%. The distribution of spots over the stellar surface has been modeled. The warm spots have been found to be distributed at various longitudes in the hemisphere on the side of the secondary component and are most likely a result of its influence.Comment: 5 pages, 7 figure

Time based radar signal analysis revealing nature and properties of surface scans

To clarify subsurface properties, it is necessary to investigate the time base of the signal. However, it is often necessary to solve the problem of determining the structure of only the surface layer. Our method addresses this problem. Advantages of the method: 1. Highlights homogeneous areas in terms of surface conditions 2. It can process large data on profile measurements in an almost continuous mode, using any one (or a small amount) information signal attribute. 3. There is no need for desk data processing, interpretation. 4. This method uses a signal of any nature. Here we explore if it is possible to obtain more information about the quality and state of the object by not only looking at a single time-based measurement, but instead looking at consecutive measurements as from a stream. By studying the structure of the stream and the changes in it, properties like moisture content can be revealed. A method is proposed for fingerprinting radar signals and detecting the boundaries of homogeneous media during a scan along changing objects properties

Особенности профессиональной мобильности выпускников вуза на рынке труда в условиях инновационного образования

The article is dedicated to consideration of particularities of shaping a creatively developed personality of a student, as well as to shaping new principles of preparation of a modern specialist. The article is based on results of interviews carried out in May-July 2008-2010 in the context of the project «Developing new educational programs and vocational training of personnel in the field of nanotechnology and nanosystems on the basis of competency approach and integration processes» Special attention is paid to the key directions of professional orientation of high school students, professional formation conforming to the requirements of the modern economy, understanding of needs of the labour market, as well as acquisition of universal knowledge and practical skills required in order to successfully work and to be needed in the labour market.Cтатья посвящена рассмотрению особенностей формирования творчески развитой личности студента, а также разработки вопросов по формированию инновационных принципов подготовки современных специалистов. В основу статьи легли результаты социологического опроса, проведенного с участием авторов в 2008-2010 гг. в рамках проекта «Разработка новых образовательных программ и содержания профессиональной подготовки элитных кадров в области нанотехнологий и наносистем на основе компетентностного подхода и интеграционных процессов». Особое значение придается ключевым направлениям профессиональной ориентации студентов вуза, профессиональному становлению, адекватному требованиям современной экономики, пониманию потребностей рынка труда, а также приобретению универсальных знаний и практических навыков, необходимых для успешной работы и востребованности на рынке труда

CLINICAL FEATURES AND REASONS FOR THE PROGRESSION OF ISCHEMIC STROKE IN THE ACUTE PERIOD

We examined 663 patients who were admitted to the clinic by ambulance, for determine the factors of clinical deterioration and progression of ischemic stroke in the acute period of the first 24-72 hours. Among the patients received in the acute period, a fatal out come occurred in 7.23% (48) patients, men- 45.8% and women - 54.2%.At the time of admission to the hospital, almost 96.7% of patients with acute ischemic stroke had a disorder of consciousness from stunning to coma. The most significant risk factors for the development of ischemic stroke among 663 patients were arterial hypertension - 80.1%, chronic heartfailure - 57.9%, coronary heart disease - 25.5%, atrial fibrillation - 19.5%, type 2 diabetesmellitus 12.5%. In accordance with the international criteria of TOAST (1993), pathogenetic mechanisms of the development of isch- emic stroke have been determined in patients. Atherothrombotic stroke developed in 303 (45.7%), cardioembolic stroke in 185 (27.9%) patients, lacunar stroke in 167 (25.2%) patients, undefined genesis stroke in 8 (1.2%) patients.The progression of neurological deficiency in ischemic stroke is a bad prognostic factor

CLINICAL FEATURES AND REASONS FOR THE PROGRESSION OF ISCHEMIC STROKE IN THE ACUTE PERIOD

We examined 663 patients who were admitted to the clinic by ambulance, for determine the factors of clinical deterioration and progression of ischemic stroke in the acute period of the first 24-72 hours. Among the patients received in the acute period, a fatal out come occurred in 7.23% (48) patients, men- 45.8% and women - 54.2%.At the time of admission to the hospital, almost 96.7% of patients with acute ischemic stroke had a disorder of consciousness from stunning to coma. The most significant risk factors for the development of ischemic stroke among 663 patients were arterial hypertension - 80.1%, chronic heartfailure - 57.9%, coronary heart disease - 25.5%, atrial fibrillation - 19.5%, type 2 diabetesmellitus 12.5%. In accordance with the international criteria of TOAST (1993), pathogenetic mechanisms of the development of isch- emic stroke have been determined in patients. Atherothrombotic stroke developed in 303 (45.7%), cardioembolic stroke in 185 (27.9%) patients, lacunar stroke in 167 (25.2%) patients, undefined genesis stroke in 8 (1.2%) patients.The progression of neurological deficiency in ischemic stroke is a bad prognostic factor

ПРЕВРАЩЕНИЕ КОРОТКОЦЕПНЫХ н-АЛКАНОВ ПОД ДЕЙСТВИЕМ ГИДРОДИНАМИЧЕСКОЙ КАВИТАЦИИ

The structure and properties of oil disperse systems (ODS) are mainly determined by the presence of paraffin hydrocarbons (n-alkanes) in the crude oil and natural gas liquid. Short-chain n-alkanes (С8-С17) are part of ODS dispersion medium. Under oil refining treatment, they concentrate in the distillate fractions and influence the operation characteristics of product liquid fuels and natural gas liquid.We studied the influence of hydrodynamic cavitation on the short-chain n-alkanes. Cavitation was produced by a high pressure disintegrator DA-1. A plunger pump produced compression pressure 50 MPa. Cavitation treatment was applied three times in a row. The research object was liquid oil paraffin containing 96.5% wt. n-alkanes С9-С21 (including 95% wt. С9-С17) and 2.5% wt. isoalkanes С10-С20; the balance was a mixture of other hydrocarbons. The results of GLC demonstrated that the total conversion of initial n-alkanes С14-С17 was not high, but it grew growing constantly: after the 1st cavitation cycle - 1.4%, after the 2nd cavitation cycle - 2.7%, after the 3rd one - 3.6%. At the highest conversion, the concentration of n-alkanes C8-C13 in liquid oil paraffin increased by 28% rel., and the concentration of n-alkanes C18-C22 - by 36% rel. The information obtained allows predicting the influence of the short-chain n-alkanes present in the oil feed on alterations of its hydrocarbon and fraction composition after cavitation.Наличие в нефтяном и газоконденсатном сырье углеводородов парафинового ряда (н-алканов) во многом определяет структуру и свойства нефтяных дисперсных систем (НДС). Короткоцепные н-алканы (С8-С17) входят в состав дисперсионной среды НДС. При переработке нефти они концентрируются в дистиллятных фракциях и влияют на эксплуатационные характеристики товарных моторных топлив. В работе исследовали влияние гидродинамической кавитации на короткоцепные н-алканы Источником кавитации служил дезинтегратор высокого давления ДА-1. Давление сжатия, создаваемое плунжерным насосом в ДА-1, составляло 50 МПа, кавитационное воздействие осуществляли последовательно три раза. Объект исследования - нефтяной жидкий парафин, содержащий 96.5% масс. н-алканов С9-С21 (в том числе 88.2% масс. С14-С17) и 2.5% масс. изоалканов С10-С20, остальное - примеси углеводородов других классов. Результаты ГЖХ показали, что суммарная конверсия исходных н-алканов С14-С17 не велика, но устойчиво возрастала: после первого цикла кавитации она составила 1.4%, после второго - 2.7%, после третьего - 3.6%. При наибольшей конверсии содержание н-алканов С8-С13 в нефтяном жидком парафине увеличилось на 1.9% масс. (28% отн.), н-алканов С18-С22 - на 0.6% масс. (36% отн.). Полученная информация позволит прогнозировать, каким образом наличие в нефтяном и газоконденсатном сырье короткоцепных н-алканов скажется на изменении его углеводородного и фракционного состава после кавитации