Stimulated by laser light exoelectron emission from solid Ar pre-irradiated by an electron beam

Spatially separated stable charge centers, self-trapped holes and trapped electrons, were generated in Ar cryocrystals by a low-energy electron beam. A combination of the cathodoluminescence (CL) and photon- stimulated exoelectron emission (PSEE) methods was used to monitor center formation and selected relaxation channel – exoelectron emission. It was found that photon-promoted electron current decreased exponentially under irradiation with the laser operating in the visible range. Influence of the laser parameters (power and wavelength) on the characteristic lifetime of exoelectron emission is discussed. Effective bleaching of the low-temperature peaks of thermally stimulated exoelectron emission by the laser light in a visible range was observed

Oxygen-driven relaxation processes in pre-irradiated Ar cryocrystals

Relaxation processes in oxygen-containing Ar cryocrystals pre-irradiated by low-energy electrons are studied with the focus on the role of diffusion controlled atom-atom recombination reaction of oxygen in the relaxation cascades. The results of correlated in real time measurements of thermally stimulated phenomena are presented. The experiments have been performed using activation spectroscopy methods — thermally stimulated exoelectron emission and spectrally resolved thermally stimulated luminescence. Solid evidence of the radiative mechanism of electron detrapping triggering the relaxation cascades is obtained

Magnetic Flux of EUV Arcade and Dimming Regions as a Relevant Parameter for Early Diagnostics of Solar Eruptions - Sources of Non-Recurrent Geomagnetic Storms and Forbush Decreases

This study aims at the early diagnostics of geoeffectiveness of coronal mass ejections (CMEs) from quantitative parameters of the accompanying EUV dimming and arcade events. We study events of the 23th solar cycle, in which major non-recurrent geomagnetic storms (GMS) with Dst <-100 nT are sufficiently reliably identified with their solar sources in the central part of the disk. Using the SOHO/EIT 195 A images and MDI magnetograms, we select significant dimming and arcade areas and calculate summarized unsigned magnetic fluxes in these regions at the photospheric level. The high relevance of this eruption parameter is displayed by its pronounced correlation with the Forbush decrease (FD) magnitude, which, unlike GMSs, does not depend on the sign of the Bz component but is determined by global characteristics of ICMEs. Correlations with the same magnetic flux in the solar source region are found for the GMS intensity (at the first step, without taking into account factors determining the Bz component near the Earth), as well as for the temporal intervals between the solar eruptions and the GMS onset and peak times. The larger the magnetic flux, the stronger the FD and GMS intensities are and the shorter the ICME transit time is. The revealed correlations indicate that the main quantitative characteristics of major non-recurrent space weather disturbances are largely determined by measurable parameters of solar eruptions, in particular, by the magnetic flux in dimming areas and arcades, and can be tentatively estimated in advance with a lead time from 1 to 4 days. For GMS intensity, the revealed dependencies allow one to estimate a possible value, which can be expected if the Bz component is negative.Comment: 27 pages, 5 figures. Accepted for publication in Solar Physic

Профилактика, диагностика и лечение тромбоэмболических осложнений в травматологии и ортопедии: методические рекомендации

The guidelines describe modern approaches to the prevention, diagnosis, and treatment of thromboembolic complications in patients with injuries and after musculoskeletal surgery, in accordance with the interdisciplinary draft of the Clinical Guidelines (2022) Deep vein thrombosis of the extremities, which has passed public hearings and is being approved by the Russian Ministry of Health. The guidelines are designed for doctors of various specialties to provide medical care to specialized patients: orthopedic surgeons, anesthesiologists, resuscitators, clinical pharmacologists, health care organizers, medical students, residents, graduate students.В методических рекомендациях описаны современные подходы к профилактике, диагностике и лечению тромбоэмболических осложнений у пациентов с травмами и операциями на опорно-двигательном аппарате в соответствии с междисциплинарным проектом клинических рекомендаций 2022 г. Тромбоз глубоких вен конечностей, прошедшим общественные слушания и находящемся на утверждении в Минздраве России. Методические рекомендации рассчитаны на врачей различных специальностей, оказывающих медицинскую помощь профильным пациентам: травматологов-ортопедов, хирургов, анестезиологов-реаниматологов, клинических фармакологов, организаторов здравоохранения, студентов медицинских вузов, ординаторов, аспирантов

Novel Bound States Treatment of the Two Dimensional Schrodinger Equation with Pseudocentral Plus Multiparameter Noncentral Potential

By converting the rectangular basis potential V(x,y) into the form as V(r)+V(r, phi) described by the pseudo central plus noncentral potential, particular solutions of the two dimensional Schrodinger equation in plane-polar coordinates have been carried out through the analytic approaching technique of the Nikiforov and Uvarov (NUT). Both the exact bound state energy spectra and the corresponding bound state wavefunctions of the complete system are determined explicitly and in closed forms. Our presented results are identical to those of the previous works and they may also be useful for investigation and analysis of structural characteristics in a variety of quantum systemsComment: Published, 16 page

Energetic particle influence on the Earth's atmosphere

This manuscript gives an up-to-date and comprehensive overview of the effects of energetic particle precipitation (EPP) onto the whole atmosphere, from the lower thermosphere/mesosphere through the stratosphere and troposphere, to the surface. The paper summarizes the different sources and energies of particles, principally galactic cosmic rays (GCRs), solar energetic particles (SEPs) and energetic electron precipitation (EEP). All the proposed mechanisms by which EPP can affect the atmosphere are discussed, including chemical changes in the upper atmosphere and lower thermosphere, chemistry-dynamics feedbacks, the global electric circuit and cloud formation. The role of energetic particles in Earth’s atmosphere is a multi-disciplinary problem that requires expertise from a range of scientific backgrounds. To assist with this synergy, summary tables are provided, which are intended to evaluate the level of current knowledge of the effects of energetic particles on processes in the entire atmosphere

Comparative analysis of the state of Pinus sylvestris L. and Pinus koraiensis Siebold et Zucc. in the Vladivostok agglomeration

The paper analyzes the growth of Pinus sylvestris L. and Pinus koraiensis Siebold et Zucc. Bonitet, age, diameter and height, density and resources were determined on 11 sample plots. The analysis of the state of artificial plantations of pinus koraiensis and pinus sylvestris, planted from 1954 to 1980, indicates their low preservation, which after 25-40 years, depending on the location of the research object, decreases to 14-25%, which confirms the need for expanding and reconstruction of green areas of the cities of the “Big Vladivostok”. The main reasons for the decline in the preservation of plantations are forest fires and unauthorized felling