Materials Literature
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In the present work, the influence of degradation during the processing in the tensile properties of blends of poly (lactic acid), montmorillonite and two types of polyolefins as dispersed phases was studied. Polymers grafted with maleic anhydride were employed as the compatibilizing agents. The nanocomposites and the…
A new class of ternary rare earth complexes, [RE(C7H5O3)2(C6H4NO2)·H2O] (RE = La, Ce, Nd), were synthesized from salicylic acid, vitamin B3 with rare earth nitrate by homogeneous precipitation method in a 20% aqueous ethanol. Their compositions and structures were characterized by elemental analysis, chemical analysis…
Abstract We present an extended numerical model of the thermal force based on the Fokker‐Planck collision method. Our model is designed for the use of the test particle transport simulation in a fluid‐like magnetized background plasma. By a series of systematic test simulations performed in this study, we have confirm…
Detailed demagnetization process depending on various external field profiles has been investigated using a magneto-optical Kerr/Faraday microscopy for a Co/Pt multilayer film with a perpendicular magnetic anisotropy. By quantitatively analyzing local magnetic domain structures, we propose that it is possible to defin…
In this work, a tracer study on pore initiation in anodic alumina in oxalic acid was performed. Effects of some experimental parameters such as applied electrical potential, electrolyte composition and heat pretreatment were evaluated. Electrochemical and morphological experiments were performed using potentiostatic a…
\nPowłoki ceramiczne na bazie tlenku cyrkonu stabilizowanego tlenkiem itru (Y2O3) są stosowane głównie jako bariery cieplne na powierzchniach elementów narażonych na działanie bardzo wysokich temperatur, m.in. łopatek turbin gazowych. Przeprowadzone badania pre- zentują możliwości wytworzenia omawianych powłok z użyci…
This paper presents testing of a CNT diode consisting of a cathode formed by CNTs and an anode placed at a distance from the CNTs. The diode is biased to a desired supply voltage below the self-turn-on voltage and an external pulsed RF signal, received by the diode, initiates the field emission from the CNTs (cathode)…
The current trend in modern electrical power systems for terrestrial and aerospace applications is to utilize dc at voltages well above the traditional levels of 12 to 42 Vdc. New airborne systems contain numerous uses of 270 Vdc, and bipolar systems with a 540 V differential are likely to appear in the near future. P…
In power systems, corona and partial discharges are among the causes of failure under high electric fields and stresses. The breakdown initiation voltage is a function of several design and environmental parameters: operation pressure, background gas type, electrode gap and its geometry, and the applied voltage level…
Various methods exist for capacitor charging circuits, but for all, a high frequency inverter is indispensable to realize high repetitive operation of the pulsed power modulator. While high frequency operation of the inverter is effective in charging voltage accuracy, the switching loss increases in proportion to the…
Se estandarizó una técnica de Reacción en Cadena de la Polimerasa PCR anidada para el diagnóstico de la enteropatía proliferativa porcina causada por la bacteria Lawsonia intracellularis. La técnica se basó en la amplificación de una región de 270 pb del gen 16s arnr de Lawsonia intracellularis; para tal fin, se extra…
The polarization/depolarization current (PDC) detection device was designed to measure the broad range current from μA to pA level, which was suitable for 10kV XLPE cables ageing test. To achieve wide range of measurement, the ultra-low bias current amplifier and feedback resistances which had different values were us…
This paper is devoted to a detailed presentation of all aspects involved in a novel experimental technique to prove the effectiveness of an early streamer emission air terminal (ESEAT) versus a traditional Franklin rod. An experimental test using a novel method and associated with electrostatic simulation demonstrates…
In this paper, the current-carrying capacity of metalized electrode is studied. The sheet resistance of tested metalized aluminum electrode is 15Ω/□. High-speed camera is applied to record the state of the metalized aluminum electrode under pulsed current. The results show that the metalized aluminum electrode will fr…
Abstract Particle‐in‐cell (PIC) simulations are the very powerful method to understand physics of edge plasmas in fusion devices. Poisson solver with a regular grid in a rectangular vessel is very fast, but it cannot simply be applicable to simulations in complicated divertor configuration. In this paper, a simple and…
This paper revels a defected 2-D hexagonal lattice structure for large frequency range. The 2-D Plane wave expansion (PWE) method is used to investigate large frequency range. It has been shown theoretically that it is possible to obtain large frequency range by adjusting filling factor and absolute frequency.
Phenol is categorized as a refractory pollutant and its presence in water stream is strictly limited according to the government regulation. The present study investigated the degra-dation of phenol in aqueous solution by the effect of ultrasound. The process took place in a 500 ml glass reactor equipped with magnetic…
In this article, SiC (silicon carbide) nanopowder was synthesized by sol-gel method. TEOS and Sucrose was used as pricier source. Final gel was obtained by mixing and drying of pricier source. This mixture was heated at 650°C and 1500°C. Primary sol was produced in pH of 4 and the effect of pH on Particle Size and mor…
Abstract Achieving high pedestal pressures in H(high)‐mode plasmas confined in tokamaks is critical for obtaining fusion burning plasmas in ITER. Recent characterizations of quasi‐equilibrium plasma parameter profiles in low collisionality H‐mode pedestals in the DIII‐D tokamak are briefly summarized. Critical plasma…
Die Metallisierung von Keramiken mittels Kaltgasspritzens stand im Fokus zahlreicher Veröffentlichungen der jüngeren Vergangenheit. Die Haftmechanismen metallischer Schichten auf nicht-duktilen Substraten sind jedoch noch nicht vollkommen verstanden. Frühere Untersuchungen von Titan-Schichten auf Aluminiumoxid ergaben…