Tunable high-energy ion source via oblique laser pulse incidence on a double-layer target

The laser-driven acceleration of high quality proton beams from a double-layer target, comprised of a high-Z ion layer and a thin disk of hydrogen, is investigated with three-dimensional particle-in-cell simulations in the case of oblique incidence of a laser pulse. It is shown that the proton beam energy reaches its maximum at a certain incidence angle of the laser pulse, where it can be much greater than the energy at normal incidence. The proton beam propagates at some angle with respect to the target surface normal, as determined by the proton energy and the incidence angle

On Field Induced Diaelastic Effect in a Small Josephson Contact

An analog of the diaelastic effect is predicted to occur in a small Josephson contact with Josephson vortices manifesting itself as magnetic field induced softening of the contact shear modulus C(T,H). In addition to Fraunhofer type field oscillations, C(T,H) is found to exhibit pronounced flux driven temperature oscillations near T_C

I surger to become I want? Investigation of factors of election of specialty

Northern state medical university, Arkhangelsk, Russian Federation The article presents the results of studying the factors of choosing a surgical specialty for senior students of medical schools (Arkhangelsk, Yekaterinburg, Voronezh). The students estimate the resources and capabilities of the university for the training of future surgeons.В статье представлены результаты изучения факторов выбора хирургической специальности студентами старших курсов медицинских вузов (Архангельск, Екатеринбург, Воронеж). Приведена оценка студентами ресурсов и возможностей вуза для подготовки будущих хирургов

Point contact spectroscopy of the electron-doped cuprate superconductor Pr{2-x}Ce{x}CuO4: The dependence of conductance-voltage spectra on cerium doping, barrier strength and magnetic field

We present conductance-voltage (G-V) data for point contact junctions between a normal metal and the electron doped cuprate superconductor Pr{2-x}Ce{x}CuO4 (PCCO). We observe a zero bias conductance peak (ZBCP) for the under-doped composition of this cuprate (x=0.13) which is consistent with d-wave pairing symmetry. For optimally-doped (x=0.15) and over-doped (x=0.17) PCCO, we find that the G-V characteristics indicate the presence of an order parameter without nodes. We investigate this further by obtaining point contact spectroscopy data for different barrier strengths and as a function of magnetic field.Comment: 13 pages, 9 figure

Assessment of practical skills in primary accreditation of the specialist on the methody of «simulated patient»: the results of the piloting station «history in the primary outpatient medical visit”

The description and results of realization of the pilot project within the second stage of primary accreditation of specialists in 2017 (specialty «Medical job») are briefly presented. The pilot project’s goal is to assess the real opportunities of realization examination of the effective communicative skills to with patients during the collection of complaints and anamnesis on a primary outpatient medical appointment. The pilot station was tested in two universities: the First Moscow State Medical University and the Urals State Medical University, Yekaterinburg.Кратко представлены описание и результаты реализации пилотного проекта в рамках второго этапа первичной аккредитации специалистов в 2017 году (специальность «Лечебное дело»). Цель пилота — оценка возможностей реализации экзамена по владению практическими навыками эффективного общения с пациентами при сборе жалоб и анамнеза на первичном амбулаторном врачебном приеме. Пилотная станция проходила апробацию в двух вузах: Первом Московском государственном медицинском университете им. И.М. Сеченова и Уральском государственном медицинском университете, г. Екатеринбург

Real-time observation of dissipative soliton formation in nonlinear polarization rotation mode-locked fibre lasers

Formation of coherent structures and patterns from unstable uniform state or noise is a fundamental physical phenomenon that occurs in various areas of science ranging from biology to astrophysics. Understanding of the underlying mechanisms of such processes can both improve our general interdisciplinary knowledge about complex nonlinear systems and lead to new practical engineering techniques. Modern optics with its high precision measurements offers excellent test-beds for studying complex nonlinear dynamics, though capturing transient rapid formation of optical solitons is technically challenging. Here we unveil the build-up of dissipative soliton in mode-locked fibre lasers using dispersive Fourier transform to measure spectral dynamics and employing autocorrelation analysis to investigate temporal evolution. Numerical simulations corroborate experimental observations, and indicate an underlying universality in the pulse formation. Statistical analysis identifies correlations and dependencies during the build-up phase. Our study may open up possibilities for real-time observation of various nonlinear structures in photonic systems