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

Pharmaceutical Risks of Injection Therapy: The Role of a Nurse

Nurse-administered injections come with a special set of risks, including such pharmaceutical factors as preparation of medicinal products in a vial prior to administration, conditions of their further storage, labelling of packages, and the need for personalised dosing of solutions for injection.The aim of the study was to analyse Russian state standard GOST R 52623.4-2015 and identify factors contributing to the risk of nursing staff’s errors in preparing, storing, and labelling of medicinal products for injection.Materials and methods. The authors analysed GOST R 52623.4-2015 Technologies for Performing Simple Medical Services of Invasive Interventions and assessed the identified risks by the FMEA method (failure modes and effects analysis).Results. The authors identified pharmaceutical risks, causes, and sources of hazardous events that occur during administration of parenteral medicinal products. The standard does not instruct readers on the order of mixing medicines in a vial and on choosing solvents for lyophilised powders. There is no labelling procedure for opened vials in the document. It does not stress the inadmissibility of pre-administration storage of a syringe/dropper with a medicinal product. The document lacks information on the need to warm the aqueous solutions that are stored in a refrigerator and/or administered at a temperature of 36–38 °С as per the package leaflet. The standard does not include a procedure for visual estimation of the volume of a solution drawn into a syringe for individual dosing of medicinal products to children. According to the FMEA risk assessment, the highest risks are posed by the order of mixing medicines in a vial and by the storage of syringes/droppers prior to administration to patients.Conclusions. To improve the safety of injection therapy, it is necessary to supplement the state standard with the identified causes of hazardous events. Nursing staff in medical organisations would benefit from in-house training on prevention of pharmaceutical risks carried out with the help of specialists in pharmaceutics and from wider involvement in discussing pharmacotherapy errors

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

Алгоритмы планирования рабочего времени в условиях интервальной неопределенности

Time-management refers to planning the available time in correspondence with personal goals and preferences of the employee. The criterion for efficient time-management lies in achieving definite goals in minimum possible time. This paper presents a short review of the literature on time-management. It is shown how scheduling theory may be used for optimal planning in time-management. The problem of minimizing the total (average) weighted completion time of the planned jobs by an employee is considered provided that only lower and upper bounds of the possible processing time of each job are known before scheduling. Software for constructing a permutation of the given jobs with the largest relative semi-perimeter of the optimality parallelepiped has been developed. Computational experiment on the computer showed the effectiveness of the developed algorithms for constructing schedules for time-management.Тайм-менеджмент используется для планирования доступного времени в соответствии с персональными целями и предпочтениями работника. Критерий эффективности тайм-менеджмента состоит в достижении поставленных целей за минимально возможное время. Предлагается краткий обзор публикаций по тайм-менеджменту. Показывается, как теория расписаний может использоваться в оптимальном планировании для тайм-менеджмента. Рассматривается задача построения оптимального расписания выполнения работником запланированных работ при условии, что при составлении расписания известны только нижняя и верхняя границы возможной длительности выполнения каждой из запланированных работ.Разработаны программы для построения перестановки выполнения запланированных работ на основе построенных перестановок с наибольшим относительным полупериметром параллелепипеда оптимальности. Проведенный на компьютере вычислительный эксперимент показал эффективность предложенных алгоритмов при составлении расписаний для тайм-менеджмента

МНОГОГРАННИК ОПТИМАЛЬНОСТИ РАСПИСАНИЯ, МИНИМИЗИРУЮЩЕГО СУММУ ВЗВЕШЕННЫХ МОМЕНТОВ ЗАВЕРШЕНИЯ ОБСЛУЖИВАНИЯ ТРЕБОВАНИЙ

It is proposed to use an optimality box of the job permutation π as a measure of the stability of an optimal permutation π for processing a set of jobs in the single-stage processing system respecting to variations of the processing times of the jobs. For randomly generated problems, experimental comparison is made of the relative dimensions and the volumes of the optimality box for permutation and relative errors of the objective function with the optimal value of the objective function calculated for the actual processing jobs. В качестве меры устойчивости оптимальной перестановки π обслуживания в одностадийной обслуживающей системе множества требований к изменениям длительностей обслуживания требований предлагается использовать размерность и относительный объем многогранника оптимальности перестановки π. Для случайно сгенерированных задач проведено экспериментальное сравнение размерностей и относительных объемов многогранников оптимальности расписаний обслуживания требований и относительных погрешностей целевых функций с оптимальными значениями целевых функций, вычисленными для фактических длительностей обслуживания требований.

Three-body correlations in direct reactions: Example of 6^{6}Be populated in (p,n)(p,n) reaction

The $^{6}$Be continuum states were populated in the charge-exchange reaction $^1$H($^{6}$Li,$^{6}$Be)$n$ collecting very high statistics data ($\sim 5 \times 10^6$ events) on the three-body $\alpha$+$p$+$p$ correlations. The $^{6}$Be excitation energy region below $\sim 3$ MeV is considered, where the data are dominated by contributions from the $0^+$ and $2^+$ states. It is demonstrated how the high-statistics few-body correlation data can be used to extract detailed information on the reaction mechanism. Such a derivation is based on the fact that highly spin-aligned states are typically populated in the direct reactions.Comment: submitted to Physical Review

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

10He low-lying states structure uncovered by correlations

The 0+ ground state of the 10He nucleus produced in the 3H(8He,p)10He reaction was found at about $2.1\pm0.2$ MeV (\Gamma ~ 2 MeV) above the three-body 8He+n+n breakup threshold. Angular correlations observed for 10He decay products show prominent interference patterns allowing to draw conclusions about the structure of low-energy excited states. We interpret the observed correlations as a coherent superposition of the broad 1- state having a maximum at energy 4-6 MeV and the 2+ state above 6 MeV, setting both on top of the 0+ state "tail". This anomalous level ordering indicates that the breakdown of the N=8 shell known in 12Be thus extends also to the 10He system.Comment: 5 pages, 5 figure

Vitamin D defi ciency and comorbid conditions in children 7-16 years of age: intelligent data analysis

The results of the analysis of the cohort of children and adolescents 7-16 years old from the central and northwestern regions of Russia (n=250) are presented. Levels 25(OH)D>30 ng/ml were observed no more than in 6% of participants. The diagnosis E55 «Vitamin D deficiency» was comorbid with diagnoses of bronchial asthma (P=0.003856), nasal congestion (P=0.003016), wheezing (P=0.000133), seasonal allergic rhinitis (