From Coulomb excitation cross sections to non-resonant astrophysical rates in three-body systems: 17^{17}Ne case

Coulomb and nuclear dissociation of $^{17}$Ne on light and heavy targets are studied theoretically. The dipole E1 strength function is determined in a broad energy range including energies of astrophysical interest. Dependence of the strength function on different parameters of the $^{17}$Ne ground state structure and continuum dynamics is analyzed in a three-body model. The discovered dependence plays an important role for studies of the strength functions for the three-body E1 dissociation and radiative capture. The constraints on the $[s^2]/[d^2]$ configuration mixing in $^{17}$Ne and on $p$-wave interaction in the $^{15}$O+$p$ channel are imposed based on experimental data for $^{17}$Ne Coulomb dissociation on heavy target.Comment: 12 pages, 13 figure

К 90-ЛЕТИЮ БОРИСА АЛЕКСАНДРОВИЧА КОЛАЧЕВА (04.04.1928–22.06.2007)

The paper expounds the life journey and main scientific achievements of Boris Alexandrovich Kolachev, laureate of the USSR State Prize, honored worker of science and technology of the RSFSR, professor, doctor of engineering who in 2018 would have turned 90 years old.Изложен жизненный путь и описаны основные научные достижения лауреата Государственной премии СССР, заслуженного деятеля науки и техники РСФСР, профессора, доктора технических наук Бориса Александровича Колачева, которому в 2018 г. исполнилось бы 90 лет

Long-Time Asymptotics of Perturbed Finite-Gap Korteweg-de Vries Solutions

We apply the method of nonlinear steepest descent to compute the long-time asymptotics of solutions of the Korteweg--de Vries equation which are decaying perturbations of a quasi-periodic finite-gap background solution. We compute a nonlinear dispersion relation and show that the $x/t$ plane splits into $g+1$ soliton regions which are interlaced by $g+1$ oscillatory regions, where $g+1$ is the number of spectral gaps. In the soliton regions the solution is asymptotically given by a number of solitons travelling on top of finite-gap solutions which are in the same isospectral class as the background solution. In the oscillatory region the solution can be described by a modulated finite-gap solution plus a decaying dispersive tail. The modulation is given by phase transition on the isospectral torus and is, together with the dispersive tail, explicitly characterized in terms of Abelian integrals on the underlying hyperelliptic curve.Comment: 45 pages. arXiv admin note: substantial text overlap with arXiv:0705.034

Complex assessment of narrow-leaved lupine (<i>Lupinus angustifolius</i> L.) accessions from the VIR collection in Belarus

Fifty narrow-leaved lupine accessions of various origin from the VIR collection were studied in Minsk District, Republic of Belarus, and described by a set of morphobiological, biochemical and molecular-genetic characters. According to the results of field and laboratory studies, 10 promising accessions were selected. They are recommended for use in regional breeding programs and included in the working collection of the Belarusian State University

The observation of long-range three-body Coloumb effects in the decay of 16Ne

The interaction of an $E/A$=57.6-MeV $^{17}$Ne beam with a Be target was used to populate levels in $^{16}$Ne following neutron knockout reactions. The decay of $^{16}$Ne states into the three-body $^{14}$O+$p$+$p$ continuum was observed in the High Resolution Array (HiRA). For the first time for a 2p emitter, correlations between the momenta of the three decay products were measured with sufficient resolution and statistics to allow for an unambiguous demonstration of their dependence on the long-range nature of the Coulomb interaction. Contrary to previous experiments, the intrinsic decay width of the $^{16}$Ne ground state was found to be narrow ($\Gamma<60$~keV), consistent with theoretical estimates.Comment: 6 pages, 5 figure

Люпус-панникулит: трудности диагностики

The paper describes a clinical case of a female patient with systemic lupus erythematosus. The features of this case are lobular panniculitis (Pn) con-current with other typical clinical and laboratory signs of the underlying disease, as well as the absence of the effect of previous therapy. The main directions of the differential diagnosis of idiopathic lobular Pn and lupus Pn that required exclusion of other rheumatic diseases are highlighted.Представлено клиническое наблюдение пациентки с системной красной волчанкой. Особенностями данного случая являются сочетание лобулярного панникулита (Пн) с другими типичными клиническими и лабораторными признаками основного заболевания, а также отсутствие эффекта предшествующей терапии. Освещены основные направления дифференциальной диагностики идиопатического лобулярного Пн и люпус-ПН, потребовавшей исключения иных ревматических заболеваний

ПРОГНОЗИРОВАНИЕ МЕХАНИЧЕСКИХ СВОЙСТВ ПОКОВОК ИЗ ТИТАНОВЫХ СПЛАВОВ ВТ6 И ВТ3-1 В ЗАВИСИМОСТИ ОТ ХИМИЧЕСКОГО СОСТАВА И СТРУКТУРЫ

The paper studies the statistical dependence of the mechanical properties of 218 forgings (15 types) made of VT3-1 and VT6 alloys in 2000–2014 on chemical composition (the content of alloying elements and admixtures, structural and strength equivalents of aluminum and molybdenum), structure types, subtypes and parameters after annealing, quenching and aging. It was found that the strength and plastic properties of one-type forgings vary quite widely. The share of variation of forging properties due to fluctuations in the content of main components and admixtures, as well as the influence of structure types and sizes of structural components was estimated. Based on the correlation analysis it was revealed that the change of each alloying element or admixture content has a little or no effect on forging properties. This is caused by small increments of their change within the grade composition. However, their total content expressed in terms of aluminum and molybdenum equivalents can vary over a fairly wide range. It was statistically substantiated that the share of tensile strength variation of VT3-1 and VT6 forgings may be ~25÷65 % due to the influence of their chemical compositions (in terms of aluminum and molybdenum equivalents), and about 20 % due to only the influence of structure types and subtypes. When these two factors (composition + structure) are combined, the share of variation can reach ~50÷65 %. For plastic properties and impact toughness, this figure is less and ranges from 20 to 35 %. The mathematical models are offered to forecast the mechanical properties of forgings depending on the structure parameters and aluminum and molybdenum equivalents.Исследованы статистические зависимости механических свойств 218 поковок (15 типоразмеров), изготовленных из сплавов ВТ3-1 и ВТ6 в 2000–2014 гг., от химического состава (содержания легирующих элементов и примесей, структурных и прочностных эквивалентов по алюминию и молибдену), типа, подтипа и параметров структуры после отжига, закалки и старения. Установлено, что прочностные и пластические характеристики однотипных поковок изменяются в довольно широких пределах. Оценена доля вариации свойств поковок, обусловленная колебаниями содержания основных компонентов и примесей, а также влиянием типа структуры и размеров структурных составляющих. На основе корреляционного анализа выявлено, что изменение количеств каждого легирующего элемента и примеси не сказывается на свойствах поковок или слабо на них влияет. Это обусловлено небольшими интервалами колебаний их концентраций в пределах марочного состава. Однако их суммарное содержание, выраженное через эквиваленты по алюминию и молибдену, может изменяться в довольно широком диапазоне. Статистически обосновано, что доля вариации предела прочности поковок сплавов ВТ3-1 и ВТ6, обусловленная влиянием химического состава (в перерасчете на эквиваленты по алюминию и молибдену), может составлять ~25÷65 %, а влиянием только типа и подтипа структуры – около 20 %. При совместном действии этих двух факторов (состав + структура) доля вариации может достигать ~50÷65 %. Для характеристик пластичности и ударной вязкости этот показатель меньше и лежит в интервале 20–35 %. Предложены математические модели для прогнозирования механических свойств поковок в зависимости от параметров структуры и эквивалентов по алюминию и молибдену

Мелоксикам: перспективы примененияпри узловатой эритеме

Nonsteroidal anti-inflammatory drugs are widely used in rheumatology in the complex therapy of pain syndrome. The paper describes the pathophysiological mechanisms of development of acute and chronic pain. The action of cyclooxygenases (COX) (types 1 and 2) is detailed. The key role of COX-2 in the induction and transmission is shown. The stepwise course of meloxicam relieves pain syndrome in the shortest possible time. The presented case demonstrates the analgesic and anti-inflammatory effects of meloxicam (Movalis) in a female patient with erythema nodosum.Нестероидные противовоспалительные препараты широко используются в комплексной терапии болевого синдрома. Представлены патофизиологические механизмы развития острой и хронической боли. Подробно описаны функции циклооксигеназы (ЦОГ) 1-го и 2-го типа, показана ключевая роль ЦОГ 2 в индукции и трансмиссии боли. Ступенчатый курс терапии мелоксикамом позволяет в короткие сроки купировать болевой синдром. Представленное клиническое наблюдение демонстрирует выраженный анальгетический и противовоспалительный эффект мелоксикама (Мовалиса) у пациентки с узловатой эритемой

Genotyping of tick-borne encephalitis and Kemerovo viruses in taiga ticks collected in the Komi Republic

Over the last years, an increasing rate of ixodes tick bites has been registered in the northern regions of the European Russia. In addition, the number of subjects request medical assistance due to tick bites has been dramatically increased in the Komi Republic. In addition, incidence of tick-borne encephalitis was also increased particularly starting since 2009. However, highly limited data on pathogen genetic diversity related to viral tick-borne infections in this region are currently available. Taiga ticks (Ixodespersulcatus) collected from the Komi Republic southern and central part vegetation were examined to identify and genotype tick-borne viruses. Individual ticks were used to identify by RT-PCR viral RNA coupled to tick-borne encephalitis and Kemerovo viruses. Viral genome fragment sequencing allowed to unambiguously identify these viruses. It was found that viral RNA tick-borne encephalitis was detected in 6.8±1.2% individual ticks. Moreover, tick-linked isolate genotyping based on analyzing E protein gene fragment nucleotide sequence derived from tick-borne encephalitis discovered that 35% and 65% isolates belonged to the Far Eastern and Siberian subtype, respectively. In addition, subsequent phylogenetic analysis demonstrated that at least four variants of the Siberian and Far Eastern subtypes of tick-borne encephalitis virus were detected, which were close to the viruses circulating in the Urals and Siberia. In contrast, prevalence of Kemerovo virus in taiga ticks was 0.8±0.2%. Sequencing of Kemerovo virus RNA-dependent RNA polymerase gene fragment showed around 94% homology with the remainder of the Kemerovo virus strains. Phylogenetic analysis of the Kemerovo virus genome fragments demonstrated at least two subtypes circulating in the Komi Republic. Thus, it was suggested that tick-borne encephalitis virus was introduced relatively recently from the Urals and Siberian region into the natural foci of the Komi Republic. Moreover, genetic differences found in Kemerovo virus strains presume for them a longer lasting evolution throughout the natural foci of this region. In addition, a potential role for birds and their ticks in rapid spreading of viral tick-borne infections in the Komi Republic is also discussed. Thus, the data on genetic diversity of the viral agents related to tick-born encephalitis and Kemerovo fever may be useful for improving their diagnostics, prevention and treatment in the Komi Republic