89 research outputs found

    Electrodeposited Nanowires and Their Applications

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    Neutron diffraction studies of magnetostrictive Fe–Ga alloy ribbons

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    Melt-spun Fe–Ga ribbons were prepared and some ribbons were annealed at 1000 °C for 1 h then slowly cooled to room temperature. X-ray diffraction patterns revealed no evidence of texture and only bcc phase in the as-quenched ribbons. However, high-resolution neutron diffraction patterns gave more information on the structure of these ribbons. Only diffractions from the disordered bcc A2 phase were found in as-quenched ribbons with 15, 17.5, and 19.5 at. % Ga content, without any trace of satellite peaks or splitting peaks from the proposed Ga–Ga pairing superlattice structure. The broadening of the base of the �110� peaks for all samples except the as-quenched 15 at. % Ga ribbon might indicate the existence of some kind of short range ordering. Ribbons developed L12 phase after annealing especially in the Fe 19.5 at. % Ga ribbon where the formation of L12 phase reduced the Ga content in the remaining A2 phase and decreased its lattice parameter dramatically. D03 phase formed in the as-quenched 22.5 at. % Ga ribbon and the following annealing treatment transformed more A2 phase into D03 phase

    Considerations regarding inflation's evolution in Central and Eastern European countries

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    Inflation is a macroeconomic phenomenon, intensively experimented by the Central and Eastern European (CEE) countries, new members of the European Union. The analysis was performed on a group of 10 Central and East European countries for the period 1990-2014. The aim of this study is to analyse the inflation phenomenon in this countries in the mentioned period that has been characterized by passing from hyperinflation to deflation. The evolution of inflation rate is extremely important in the present context because of the EU integration and because differences between inflation rates will influence real wages and interest which, in their turn, will affect the capital flows and labour force. The research methodology is new, quitting the classical analyses of ARCH type and instead using the Markov Switching – Auto Regressive (MS-AR) model

    Considerations regarding inflation's evolution in Central and Eastern European countries

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    Inflation is a macroeconomic phenomenon, intensively experimented by the Central and Eastern European (CEE) countries, new members of the European Union. The analysis was performed on a group of 10 Central and East European countries for the period 1990-2014. The aim of this study is to analyse the inflation phenomenon in this countries in the mentioned period that has been characterized by passing from hyperinflation to deflation. The evolution of inflation rate is extremely important in the present context because of the EU integration and because differences between inflation rates will influence real wages and interest which, in their turn, will affect the capital flows and labour force. The research methodology is new, quitting the classical analyses of ARCH type and instead using the Markov Switching – Auto Regressive (MS-AR) model

    Classic Hodgkin lymphoma-nodular sclerosis – case report

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    Hodgkin's lymphoma is the third most common cancer in young people between 15 and 34 years of age, with a lower incidence in other age groups and slightly higher in males. The etiology of Hodgkin's lymphoma is still unknown - although various factors influencing the oncogenesis of the disease have been noted, the mechanism of their influence is poorly understood. This article will present the case of a 41-year-old patient with classic Hodgkin's lymphoma - nodular sclerosis histological subtype - chemorefractory

    Midazolam versus Propofol monitored anesthesia care sedation in pediatric patients undergoing spinal anesthesia

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    Cardiorespiratory and Neuromotor Functional Exploration Laboratory, Microbiology and Immunology Research Laboratory, Laboratory of Population Health Research in Correlation with Risk Factors, Clinical Department Faculty of Medicine and Pharmacy, Dunarea de Jos University of Galaţi, Romania, The 5th International Congress of the Society of Anesthesiology and Reanimatology of the Republic of Moldova, 16th Edition of the International Course of Guidelines and Protocols in Anesthesia, Intensive Care and Emergency Medicine, 28th Meeting of the European Society for Computing and Technology in Anesthesia and Intensive Care September 27-29, 2018, Chisinau, the Republic of MoldovaBackground: Spinal anesthesia in children enjoyed an increased interest in the past few years. It proved to be a valid alternative because it is simple, not requiring the instrumentation of the airways, facilitates the postoperative care and is the most suitable technique when general anesthesia should be avoided. Besides its benefits, spinal anesthesia in children often requires additional perioperative sedation. This study was designed to compare the efficacity of two hypnotic drugs Propofol and Midazolam as part of monitored anaesthesia care sedation during surgery. Material and methods: This study was performed in Pediatric Clinical Hospital of Galati and included all the children who underwent spinal anesthesia for lower abdominal or limb surgery between May 2016 and May 2017. These children were premedicated with low doses of midazolam, ketamine and atropine before the lumbar puncture and during surgery some of them were continuously sedated with Propofol and the others with Midazolam. The level of sedation, intaoperative behavior, respiratory and hemodynamic status, awakening and postoperative side effects were our main data of interest. Results: Both hypnotic drugs offered acceptable levels of sedation, some but not significant fluctuations of the respiratory rate, the blood pressure and the pulse and a light awakening. Pediatric patients who were sedated with Midazolam registered more postoperative nausea and vomiting and one patient sedated with Propofol presented purposeless movements during surgery. Conclusions: The monitored anesthesia care sedation with Propofol for spinal anesthesia offers a superior grade of comfort because of the lower risk of postoperative nausea and vomiting

    Soft Magnetic Multilayered Thin Films for HF Applications

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    AbstractMultilayered thin films from various soft magnetic materials were successfully prepared by magnetron sputtering in Ar atmosphere. The magnetic properties and microstructure were investigated. It is found that the films show good soft magnetic properties: magnetic coercivity of 1-10Oe and saturation magnetization higher than 1T. The initial permeability of the films is greater than 300 and flattens up to 600MHz. The multilayer thin film properties in combination with their easy, fast and reproducible fabrication indicate that they are potential candidates for high frequency applications

    The role of the Fe/Mo cations ordering degree and oxygen non-stoichiometry on the formation of the crystalline and magnetic structure of Sr2FeMoO6‒δ

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    Single-phase Sr2FeMoO6-δ powders with various oxygen indices (δ) and degrees of the superstructural ordering (P) of the Fe/Mo cations were obtained from SrFeO2.52 and SrMoO4 reagents via solid-state synthesis. It has been established by means of the x-ray and neutron diffraction that, upon reducing the oxygen content and enhancing the superstructural ordering, the lengths of the Fe–O1 and Mo–O2 bonds in the crystal lattice increase, whereas the Fe–O2 and Mo–O1 bond lengths decrease. At the same time, the volume of the unit cell is reduced, which indicates an enhancement of the covalency degree of the bonds and stimulates a redistribution of the electron density, as well as an increase of the concentration of the spin-down charge carriers located in the conduction band on the Mo(t2g)↓ orbitals. This circumstance leads to an increase of the density of states at the Fermi level, accompanied by an amplification of the exchange interaction and elevation of the Curie temperature, which points to the leading role of the spin-polarized charge carriers at the Fermi level in the exchange interaction.publishe
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