Certain physical properties of cobalt and nickel borides

The temperature dependence of the electrical resistivity, the thermal conductivity, and the thermal emf of cobalt and nickel borides were studied. In the case of the nickel borides the magnetic susceptibility and the Hall coefficient were determined at room temperature. The results are discussed with allowance for the current carrier concentration, the effect of various mechanisms of current-carrier scattering and the location of the Fermi level in relation to the 3d band

Evolution of hair treatment and care: Prospects of nanotube-based formulations

A new approach for hair treatment through coating with nanotubes loaded with drugs or dyes for coloring is suggested. This coating is produced by nanotube self-assembly, resulting in stable 2–3 μm thick layers. For medical treatment such formulations allow for sustained long-lasting drug delivery directly on the hair surface, also enhanced in the cuticle openings. For coloring, this process allows avoiding a direct hair contact with dye encased inside the clay nanotubes and provides a possibility to load water insoluble dyes from an organic solvent, store the formulation for a long time in dried form, and then apply to hair as an aqueous nanotube suspension. The described technique works with human and other mammal hairs and halloysite nanoclay coating is resilient against multiple shampoo washing. The most promising, halloysite tubule clay, is a biocompatible natural material which may be loaded with basic red, blue, and yellow dyes for optimized hair color, and also with drugs (e.g., antilice care-permethrin) to enhance the treatment efficiency with sustained release. This functionalized nanotube coating may have applications in human medical and beauty formulations, as well as veterinary applications. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.Council on grants of the President of the Russian FederationMinistério da Ciência e Tecnologia, MCT: SFRH/BD/136892/2018Funding: This research was funded by Fundação para a Ciência e Tecnologia do Ministério da Ciência e Tecnologia, Programa Operacional Capital Humano # SFRH/BD/136892/2018, Portugal and the Russian Federation, # 02.A03.21.0006, act 211

The impact of stress on the morbidity of university students

The purpose of the study is to confirm or refute the relationship of stress experienced with the incidence of students.Цель исследования – подтвердить или опровергнуть связь испытываемого стресса с частотой заболеваемости студентов

Isolation of two strains of West Nile virus during an outbreak in southern Russia, 1999.

From July to September 1999, a widespread outbreak of meningoencephalitis associated with West Nile virus (Flavivirus, Flaviviridae) occurred in southern Russia, with hundreds of cases and dozens of deaths. Two strains of West Nile virus isolated from patient serum and brain-tissue samples reacted in hemagglutination-inhibition and neutralization tests with patients' convalescent-phase sera and immune ascites fluid from other strains of West Nile virus

Pion and Sigma Polarizabilities and Radiative Transitions

Fermilab E781 plans measurements of gamma-Sigma and $\gamma$-pion interactions using a 600 GeV beam of Sigmas and pions, and a virtual photon target. Pion polarizabilities and radiative transitions will be measured in this experiment. The former can test a precise prediction of chiral symmetry; the latter for a_1(1260) ----> pi + gamma is important for understanding the polarizability. The experiment also measures polarizabilities and radiative transitions for Sigma hyperons. The polarizabilities can test predictions of baryon chiral perturbation theory. The radiative transitions to the Sigma*(1385) provide a measure of the magnetic moment of the s-quark. Previous experimental and theoretical results for gamma-pi and gamma-Sigma interactions are given. The E781 experiment is described.Comment: 13 pages text (tex), Tel Aviv U. Preprint TAUP 2204-94, uses Springer-Verlag TEX macro package lecproc.cmm (appended at end of tex file, following \byebye), which requires extracting lecproc.cmm and putting this file in your directory in addition to the tex file (mmcd.tex) before tex processing. lecproc.cmm should be used following instructions and guidelines available from Springer-Verlag. Submitted to the Proceedings of Workshop on Chiral Dynamics, Massachusetts Institute of Technology, July 1994, Eds. A. Bernstein, B. Holstein. Replaced Oct. 4 to add TAUP preprint number. Replaced Oct. 12 to correct Pb target thickness from 1.3% interaction to 0.3

The Cultural Value of Shakespeare Lives 2016 Research Report

The The cultural value of Shakespeare Lives 2016 project is available at https://www.open.ac.uk/researchprojects/diasporas/cvp/shakespeare-lives-2016.The British Council commissioned the Open University to develop an evaluation plan for Shakespeare Lives (SL) in 2016 based on the Cultural Value Model, a methodological tool devised by the Open University in collaboration with the British Council that offers an innovative and comprehensive approach to assessing the impact of the British Council’s Cultural Relations Programmes. The Cultural Value Model combines existing performance assessment data gathered by the British Council with additional qualitative and quantitative data collected by The Open University as part of the project.British Counci

Kolmogorov turbulence, Anderson localization and KAM integrability

The conditions for emergence of Kolmogorov turbulence, and related weak wave turbulence, in finite size systems are analyzed by analytical methods and numerical simulations of simple models. The analogy between Kolmogorov energy flow from large to small spacial scales and conductivity in disordered solid state systems is proposed. It is argued that the Anderson localization can stop such an energy flow. The effects of nonlinear wave interactions on such a localization are analyzed. The results obtained for finite size system models show the existence of an effective chaos border between the Kolmogorov-Arnold-Moser (KAM) integrability at weak nonlinearity, when energy does not flow to small scales, and developed chaos regime emerging above this border with the Kolmogorov turbulent energy flow from large to small scales.Comment: 8 pages, 6 figs, EPJB style

НУКЛЕОЗИДНЫЕ АНАЛОГИ В ТЕРАПИИ ГРИППА: ИСТОРИЯ И ОПЫТ

Aim. In this study we retrospectively evaluated the clinical effectiveness and safety of nucleoside analogues (Triazavirin© and ribavirin) with that of oseltamivir for treating moderate severe influenza in adults. Materials and methods. We have used data from 191 health records of patients with moderate severe PCR confirmed influenza A and B. Control group included 57 patients treated with oseltamivir, comparison groups – 53 and 81 patients, who received Triazavirin© and ribavirin accordingly. We compared infectious intoxication syndrome duration, fever duration, duration of acute rhinitis, acute pharyngitis, acute laryngitis, acute tracheitis, acute bronchitis, cough duration as well as pneumonia occurrence. Results. No statistically significant difference in the duration of developed syndromes in Triazavirin©-treated group and oseltamivir-treated group were observed. We have noticed that fever duration had been significantly longer in ribavirin group compared to control group (4,1±2,22 days vs. 3,1±1,94 days, p<0,05) as well as more frequent pneumonia occurrence (1,2% vs. 0,0%, p>0,05). Conclusion. New nucleoside analogue Triazavirin© showed good efficacy and safety profile in adult patients with influenza. This fact provides the opportunity to recommend it for treatment of influenza along with neuraminidase inhibitors.Цель: оценка клинической эффективности и безопасности нуклеозидных аналогов (Tриазавирина© и рибавирина) для лечения пациентов с гриппом средней степени тяжести по сравнению с осельтамивиром. Материалы и методы: в исследовании были использованы данные 191 истории болезни пациентов с лабораторно подтвержденным диагнозом «Грипп А» или «Грипп В» средней степени тяжести. Контрольную группу составили 57 пациентов, получавших осельтамивир, группы сравнения – 53 и 81 пациент, которые получали Триазавирин© и рибавирин соответственно. Терапевтическая эффективность сравниваемых препаратов была оценена по длительности общих инфекционных синдромов (интоксикации, лихорадки), синдромов поражения респираторного тракта и кашля, а также по частоте развития осложненного пневмонией течения гриппа. Результаты: статистически значимых различий в длительности общих инфекционных синдромов, синдромов поражения респираторного тракта, частоте развития пневмоний у пациентов, получавших Триазавирин© или осельтамивир, получено не было. Отмечена статистически значимо большая продолжительность лихорадки у пациентов, получавших рибавирин, по сравнению с контрольной группой (4,1±2,22 дня против 3,1±1,94 дня, p<0,05), а также более частое развитие пневмоний (1,2% против 0,0%, p>0,05). Заключение: показана высокая терапевтическая эффективность и хороший профиль безопасности препарата из группы нуклеозидных аналогов Tриазавирина©. Это позволяет рассматривать его, наряду с ингибиторами нейраминидазы, в качестве препарата первой линии для лечения пациентов с гриппом

ГРИПП В: ОСОБЕННОСТИ КЛИНИЧЕСКОЙ КАРТИНЫ И ЭТИОТРОПНОЙ ТЕРАПИИ

Since January 1997 till March 2009 492 patients with a confirmed diagnosis of influenza A virus and influenza B virus underwent work-up in Military Medical Academy. It is established that the clinical findings of influenza B virus are accurately different from the clinical findings of influenza A virus. Influenza B virus is characterized by more prolonged fever, lower incidence and duration of some respiratory syndromes and fewer sequelae. The influence of etiotropic drugs and early interferon inducers on influenza B virus course was studied. Neuraminidase inhibitors are the most effective antiviral therapy agent for influenza B virus. At the same time, there was a significant reduction in the duration of the common infectious intoxication syndrome and respiratory tract damage.В Военно-медицинской академии имени С.М. Кирова с января 1997 г. по март 2009 г. проведено обследование 492 пациентов с подтвержденным диагнозом гриппа А и гриппа В. Установлено, что клиническая картина гриппа В достоверно отличается от клинической картины гриппа А. Грипп В характеризуется более длительной лихорадкой, меньшей частотой и продолжительностью некоторых респираторных синдромов и меньшим числом осложнений. При изучении влияния этиотропных лекарственных средств и индукторов раннего интерферона на течение гриппа В наиболее эффективным противовирусным средством терапии гриппа В являются ингибиторы нейраминидазы. При этом отмечалось достоверное уменьшение продолжительности синдромов общей инфекционной интоксикации и поражения респираторного тракта

Interactions of neutral semipermeable shells in asymmetric electrolyte solutions

We study the ionic equilibria and interactions of neutral semi-permeable spherical shells immersed in electrolyte solutions, including polyions. Although the shells are uncharged, only one type of ions of the electrolyte can permeate them, thus leading to a steric charge separation in the system. This gives rise to a charge accumulation inside the shell and a build up of concentration- dependent shell potential, which converts into a disjoining pressure between the neighboring shells. These are quantified by using the Poisson-Boltzmann and integral equations theory. In particular, we show that in case of low valency electrolytes, interactions between shells are repulsive and can be sufficiently strong to stabilize the shell dispersion. In contrast, the charge correlation effects in solutions of polyvalent ions result in attractions between the shells, with can lead to their aggregation