Materials Literature
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This review paper is focusing on the investigations and studies on emissions of applying the Compressed Natural Gas (CNG) in the CNG-Diesel engines. As well as, the paper is highlighting studies that involved in the search for alternative fuels to be used for less emissions and good performance vehicles. Moreover, ill…
ZnO nanowires, among other peizoelectric nanostructures, have been frequently applied to realize nanogenerators (NGs). However, it has been recently shown that ZnO nanosheets have higher mechanical strength than the nanowires, which entitles them as another candidate in this field of application. In this paper, we rep…
In this paper a system of two-stage processing for the detection of acoustic emissions and the localization of the sources is presented. The first stage is programmed in LabVIEW and is dedicated to the detection. A second stage is programmed in Matlab and is devoted to the localization. They are connected by a packet-…
Modified dye-sensitised solar cells were fabricated by inserting graphene layers between fluorine-doped tin oxide electrodes and mesoscopic titanium dioxide films. The results of current–voltage characterisation under dark condition and using electrochemical impedance spectroscopy indicate that the graphene layers can…
The optical properties of LuNi5 − x Cu x intermetallic compounds (x = 0, 1, 2) have been investigated using ellipsometry in the wavelength range of 0.22–15 μm. It has been established that the partial substitution of nickel by copper leads to substantial variations in the spectral characteristics, as well as in the pl…
Design equations for wideband single‐layer absorbers based on the condition of zero slope reactance (or susceptance) at a specific centre frequency are presented. Using the design equations, a microwave absorber is realised employing a cross‐shaped strip structure as a unit on an FR‐4 substrate with a relative permitt…
This paper presents a double-ladders circuit model of transformer winding for use in frequency response analysis (FRA) to diagnose the windings deformation. This model considers the nonlinear behavior of frequency-dependent parameter and core loss. A lumped parameter circuit model includes the axial and radial ladder…
Influence of incorporated magnesium (Mg) into synthetic calcite and dissolved organic carbon (DOC) on P sorption by synthetic calcite (SC), synthetic Mg-calcite (SMC), and some selected calcareous soil samples were examined in different laboratory experiments. The sorption of P onto SC or SMC was time dependent partic…
The mechanical properties of a dual phase steel treated in different intercritical windows and subjected to bitumen as the quenching medium was investigated. The viscosity of the quenchant was altered at several rate, the morphology of phases formed was characterized. Also, the quenched samples produced ferrite-marten…
Rotor eddy-current loss calculation by means of 3D finite element analysis is often necessary during later design stages of a new machine, but can still be very time-consuming. This paper proposes two FEM-based methods that potentially require less time to solve than a transient model of the complete machine geometry…
The interior permanent magnet motor is the central component of modern high performance hybrid electric vehicles. During the vehicle's normal operation, demagnetization can occur in the magnets due to temperature rise and high current loading, which could change the IPM's electrical and mechanical characteristic and t…
In this paper, a spoke-type IPM motor (buried with circumferentially magnetized magnets) with fractional-slot concentrated windings is designed to block the two-pole sub-harmonic and, thus, reduce the iron core losses and torque ripple. This is demonstrated by the comparison of a conventional V-type IPM configuration…
The investigations carried out under this work dealing with a new field of application for large-scale production of electric contacting processes for micro-electro-mechanical systems (MEMS) using the micro-injection molding technology. The focus of this article is the analysis of process-related influential factors o…
Hot compressive deformation and cracking behaviors of cast 21-4N steel were investigated over a temperature range between 900°C~1250°C. The strength of the specimen at the outer surface of ingot is greater than that in the inner part because of the initial rapid solidification and corresponding fine structure at the o…
The formation of biofilm (Biofouling) in different surface is the great concern in types of fields, especially in medical and health system as well as in membrane technology. The present study deals with the synthesis and characterization of Al2O3 nanopowders with antibacterial activity which can be a potentially util…
The reaction kinetics of esterification-hydrolysis in the n -propanol + acetic acid + n -propyl acetate + water system is considered. The phase state of the reaction mixture-homogeneous or two-phase-can change in the course of reaction due to the occurrence of a splitting region. For the analysis of the behavior of th…
Novel hydrogen-containing alloys based on aluminum, boron, and magnesium hydride (MgH 2 ) are fabricated in a special process. The properties of their dust clouds (minimum ignition energy, minimum explosive concentration, and maximum explosion pressure) are studied. The results show that the minimum ignition energies…
In the previous work, we reported that the luminous efficacy was significantly improved using the short sustain pulse width with sufficiently long off-time between sustain pulses. In this paper, we have proposed the dual sustain pulse as an alternative of short sustain pulse width when the off-time is short. We demons…
Space harmonics of synchronous machines are investigated in this paper through a specially designed synchronous machine. Two-dimension (2D) finite element method is used to calculate the magnetic field of the machine. The space harmonic magnitude and phase angle can be computed based on the magnetic flux density. The…
Decellularization is a process of tissue treatment targeting cell removal. Sonication system was developed in order to decellularize meniscus tissues. The samples were sonicated in 0.1% sodium dodecyl sulphate (SDS) for 10 hours and at 40 kHz ultrasound frequency. All the samples were structurally examined using van G…