Dressing chain for the acoustic spectral problem

The iterations are studied of the Darboux transformation for the generalized Schroedinger operator. The applications to the Dym and Camassa-Holm equations are considered.Comment: 16 pages, 6 eps figure

Single-Molecule Localization Microscopy Reconstruction Using Noise2Noise for Super-Resolution Imaging of Actin Filaments

Single-molecule localization microscopy (SMLM) is a super-resolution imaging technique developed to image structures smaller than the diffraction limit. This modality results in sparse and non-uniform sets of localized blinks that need to be reconstructed to obtain a super-resolution representation of a tissue. In this paper, we explore the use of the Noise2Noise (N2N) paradigm to reconstruct the SMLM images. Noise2Noise is an image denoising technique where a neural network is trained with only pairs of noisy realizations of the data instead of using pairs of noisy/clean images, as performed with Noise2Clean (N2C). Here we have adapted Noise2Noise to the 2D SMLM reconstruction problem, exploring different pair creation strategies (fixed and dynamic). The approach was applied to synthetic data and to real 2D SMLM data of actin filaments. This revealed that N2N can achieve reconstruction performances close to the Noise2Clean training strategy, without having access to the super-resolution images. This could open the way to further improvement in SMLM acquisition speed and reconstruction performance

Evaluating perspectives of economy "decarbonation" - environmental aspect

The present paper deals with evaluation of economy "decarbonation" perspectives in post-Soviet states. The dynamics of this process over the period of 1990-2014 has been studied and the countries have been ranked respectively. Decoupling of GDP growth and CO2 emissions has been identified. The authors suggest a classification of tools to manage the process

Measurements of integral muon intensity at large zenith angles

High-statistics data on near-horizontal muons collected with Russian-Italian coordinate detector DECOR are analyzed. Precise measurements of muon angular distributions in zenith angle interval from 60 to 90 degrees have been performed. In total, more than 20 million muons are selected. Dependences of the absolute integral muon intensity on zenith angle for several threshold energies ranging from 1.7 GeV to 7.2 GeV are derived. Results for this region of zenith angles and threshold energies have been obtained for the first time. The dependence of integral intensity on zenith angle and threshold energy is well fitted by a simple analytical formula.Comment: 4 pages, 4 figures, 1 tabl

Mutations in human genes that increase the risk for severe influenza infection

The system of genetic control of innate immune responses to influenza infection and gene function allows for the development of systemic treatment of influenza with a focus on the phenotype of mutations based on individual genetic susceptibility to severe disease and/or the development of complications.The system of genetic control of innate immune responses to influenza infection and gene function allows for the development of systemic treatment of influenza with a focus on the phenotype of mutations based on individual genetic susceptibility to severe disease and/or the development of complications

One-Dimensional Discrete Stark Hamiltonian and Resonance Scattering by Impurities

A one-dimensional discrete Stark Hamiltonian with a continuous electric field is constructed by extension theory methods. In absence of the impurities the model is proved to be exactly solvable, the spectrum is shown to be simple, continuous, filling the real axis; the eigenfunctions, the resolvent and the spectral measure are constructed explicitly. For this (unperturbed) system the resonance spectrum is shown to be empty. The model considering impurity in a single node is also constructed using the operator extension theory methods. The spectral analysis is performed and the dispersion equation for the resolvent singularities is obtained. The resonance spectrum is shown to contain infinite discrete set of resonances. One-to-one correspondence of the constructed Hamiltonian to some Lee-Friedrichs model is established.Comment: 20 pages, Latex, no figure

Activities Undertaken toward Individuals Who Have Been in Contact with Ebola Fever Patient

Significant aspect in the provision of anti-epidemic readiness for Ebola fever importation into the Russian Federation is to determine the scope of measures to be undertaken toward individuals who have been in contact with index case. Analyzed have been the published data on the imported case records resultant in the secondary transmission of the disease; measures, performed in relation to contact persons in non-endemic countries; possible mechanisms of transmission; presence of virus in biological material from an infected individual; risk of exposure to virus onboard the aircraft. Based on the results of the analysis of publications, WHO, CDC and Rospotrebnadzor recommendations, with due consideration of the current regulations, put forward is an approximate procedure for individuals who have been in contact with EVD case onboard the plane, including transportation of persons, exposed to the increased risk of infection into a specialized hospital

Work functions, ionization potentials, and in-between: Scaling relations based on the image charge model

We revisit a model in which the ionization energy of a metal particle is associated with the work done by the image charge force in moving the electron from infinity to a small cut-off distance just outside the surface. We show that this model can be compactly, and productively, employed to study the size dependence of electron removal energies over the range encompassing bulk surfaces, finite clusters, and individual atoms. It accounts in a straightforward manner for the empirically known correlation between the atomic ionization potential (IP) and the metal work function (WF), IP/WF$\sim$2. We formulate simple expressions for the model parameters, requiring only a single property (the atomic polarizability or the nearest neighbor distance) as input. Without any additional adjustable parameters, the model yields both the IP and the WF within $\sim$10% for all metallic elements, as well as matches the size evolution of the ionization potentials of finite metal clusters for a large fraction of the experimental data. The parametrization takes advantage of a remarkably constant numerical correlation between the nearest-neighbor distance in a crystal, the cube root of the atomic polarizability, and the image force cutoff length. The paper also includes an analytical derivation of the relation of the outer radius of a cluster of close-packed spheres to its geometric structure.Comment: Original submission: 8 pages with 7 figures incorporated in the text. Revised submission (added one more paragraph about alloy work functions): 18 double spaced pages + 8 separate figures. Accepted for publication in PR

Calibration of the NEVOD-EAS array for detection of extensive air showers

In this paper we discuss the calibration of the NEVOD-EAS array which is a part of the Experimental Complex NEVOD, as well as the results of studying the response features of its scintillation detectors. We present the results of the detectors energy calibration, performed by comparing their response to different types of particles obtained experimentally and simulated with the Geant4 software package, as well as of the measurements of their timing resolution. We also discuss the results of studies of the light collection non-uniformity of the NEVOD-EAS detectors and of the accuracy of air-shower arrival direction reconstruction, which have been performed using other facilities of the Experimental Complex NEVOD: the muon hodoscope URAGAN and the coordinate-tracking detector DECOR.Comment: 16 pages, 17 figures, To be submitted to Nuclear Instruments and Methods

Complex of Measures Aimed at Prevention of Ebola Virus Disease Importation and Transmission, Performed within the Frames of Sanitary Protection of the Territories of the Russian Federation

An estimated scope of measures, aimed at the prevention of Ebola virus disease importation and transmission in the territory of the Russian Federation, targets the maximum level of hazard to the population. It has a complex interagency character, whereby the Federal service for surveillance in the sphere of consumers rights protection and human welfare functions as coordinator and principal executing agency. The measures affect the following areas: regulatory compliance and methodological support, sanitary-quarantine control reinforcement at the entry points on the state border of the Russian Federation, strengthening of anti-epidemic preparedness of the Rospotrebnadzor and public healthcare institutions and authorities, including operational preparedness of the laboratory facilities, information support within the framework of epidemiological surveillance, and involvement in the activities under the international collaboration for epidemic response and control. Practices have been completed as regards series of actions conducted from the time of the case identification and further on; evacuation of the infected and suspected individuals, procedures for sanitary disinfection, interventions in the relation to contact persons, and readiness for anti-epidemic measures performance