Materials Literature
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Hybrid active series power filters, as originally proposed in the literature, presents a way to improve the physical limitation of tuned passive filters. However, these improvements are restricted to a single filter parameter, i.e., quality factor or tuned factor. To overcome these limitations, a hybrid system compose…
The cellular or dendritic morphologies of the Al-rich matrix as well as the morphology, size, and distribution of the intermetallic particles can affect not only the electrochemical corrosion resistance but also the mechanical strength of Al-Ni alloys. The aim of this work is to analyze the effects of two different po…
Silica nanoparticles were synthesized from rice husk ash at room temperature by sonochemical method. The feeding rate of percipiteting agent and time of sonication were investigated. The nanostructure of the synthesized powder was realized by the FE-SEM photomicrograph, FT-IR spectroscopy, XRD and XRF analyses. These…
OBJECTIVE: To study on the effect of acteoside on learning and memory of dementia mice. METHOD: Mice were orally administered with acteoside for 10 days. Scopolamine was used to establish the acquired learning disability in mice. Their learning and memory were detected with a behavioral experiment (step-down test). Af…
Slotless brushless DC motors find more and more applications due to their high performance and their low production cost. This paper focuses on the windings inserted in the airgap of these motors, and particularly, to an original production technique which consists in printing the windings on a flexible printed circui…
We fabricated three-dimensional (3D)-structure solar cells with Cu2ZnSnS4 (CZTS). A CdS buffer layer was deposited around nc-TiO2 by the chemical bath deposition (CBD) method. The CdS deposition time was varied from 5 to 30 min at 65 °C. CZTS absorber was deposited by spray pyrolysis deposition (SPD) onto the CdS buff…
The scarcity of comprehensive characterizations of soils associated to gentle summit depressions of the Northeastern Brazilian Coastal Plains justifies this work, which had as objective to provide basic information for the more diverse agricultural and non-agricultural uses. For that, representative soils (Spodosols o…
Abstract The recent availability of tetrahedral palladium (PdTH) nanocrystals with cleaned surfaces allowed us to evaluate their facet-specific electrochemical properties as a new support of platinum monolayer (PtML) catalysts. The Pd–PtML core-shell electrocatalyst was examined by combining structural analyses and De…
The problem of diffraction of a plane TE -polarized electromagnetic wave by gaps between metal plates located in the same plane is investigated. The diffraction problem is formulated as a boundary-value problem for the Helmholtz equation with the boundary conditions on metal and a given asymptotic behavior at the edge…
The valance band offset ΔE v for the CdS/Cu2ZnSnS4 heterojunction is obtained on the basis of the first-principles pseudopotential method. Cu2ZnSnS4 is considered to crystallize in the kesterite structure. The total density of states and the local density of states for each atoms are calculated for the CdS(001)/Cu2ZnS…
The purpose of this study was to evaluate transepidermal water loss, skin hydration and skin pH in normal ponies. Sixteen ponies of both sexes were examined in the study. Measurements were taken from seven different sites: the neck region, the shoulder, thorax, lumbar, inguinal, lip region and the auricle. In each of…
This paper presents an attempt to derive the dielectric permittivity characteristics of polymer composite filled with the metal oxide particle which has mesoporous structure. Experiments were carried out on the epoxy composites filled with alumina microparticles which have the mesoporous structure (mesoporous-alumina/…
The advantages of a Static VAR Compensator (SVC) for electric arc furnace (EAF) and ladle melt furnace (LMF) applications are well known. The SVC minimizes the impact of the EAF and LMF on the utility as well as improves the efficiency of both furnaces. In this application, it was desirable to quantify the performance…
We report on the impact of changes in the protic ionic liquid (pIL) cation on the fibrilisation kinetics and the conversion of the Aß 16–22 from monomers to amyloid fibrils. When we compare the use of primary, secondary, and tertiary amines we find that the primary amine results in the greatest conversion into amyloid…
Electrical properties, microcathodoluminescence spectra, and spectra of deep traps were studied for nanopillar structures prepared by dry etching of undoped GaN films using natural masks formed by Ni nanoparticles. It is shown that as-prepared nanopillar structures have low bandedge intensity, very high leakage curren…
This paper deals with an implementation of a Distribution Static Compensator (DSTATCOM) using an adaptive filter based control algorithm for power quality improvement under linear/nonlinear loads in a three phase distribution system. The proposed control algorithm based on adaptive synchronous extraction is used for e…
A large number of power transformers rely on the mechanical properties of oil-impregnated cellulose. In particular, the deformation of windings in power transformer depends on the out-of-plane mechanical properties of pressboard insulation. Compressive loads are applied via clamping rings onto insulating paper and spa…
Two different costs effective and high efficiency methods for improving the main performances of tooth concentrated windings are presented. Using these simple techniques it is possible to reduce or even to cancel some space harmonics of low order resulting in lower magnet and iron losses induced by the armature reacti…
This paper presents an analytical method for prediction of equivalent circuit parameter of a solid rotor induction motor with smooth surface. The solid rotor induction motor is similar to a linear induction motor in electromagnetic properties. Therefore, the method of performance calculation for LIM can be applied for…
Recent developments in the technology of laser-pulsed local-electrode atom-probe (LEAP) tomography include a picosecond ultraviolet (UV) laser system having a 355 nm wavelength and both external and in-vacuum optics. This approach ensures focusing of the laser beam to a smaller spot diameter than has heretofore been o…