Materials Literature
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Reaction of 2-hydroxy-3-methoxybenzaldehyde semicarbazone with Ni(NO 3 ) 2 6H 2 O, in the presence of 2,2'-bipyridine, afforded a dinuclear complex (1). Crystal structure of 1 revealed the dinuclear complex, in which one nickel center is surrounded octahedrally by two monoanionic O,N,O-donor semicarbazone. The second…
Iron-based nanoparticles have gained a lot of attention due to their properties which offer a broad range of biomedical and industrial applications. Traditional methods of synthesis of iron nanoparticles strongly infl uence their properties and limit their applicability. Recently, there has been a growing interest in…
Combat simulations are part of a suite of tools used by Defence Science and Technology Organisation (DSTO) to support Army decision makers, allowing analysis of the effects of changes in equipment, tactics or force structure. In order to represent combat effectively, these tools require enormous amounts of input data,…
A well-known piezoelectric material, lead zirconate titanate in the 52:48 nonstoichiometric composition was successfully synthesized by hydrothermal method using lead nitrate, zirconium oxy-chloride, titanium di-oxide and potassium hydroxide with the help of an acid digestion bomb. The piezoelectric response of this s…
This paper presents Computational Intelligence Algorithm (CIA) based Condition Monitoring System (CMS) for Power Transformer. The online as well as offline data is used for making the decision. The mechanism is developed for real time application using the analogue to digital interfacing system for data transmission.…
Spectral leakage is one of the perilous effects on the accuracy of harmonic analysis based on Discrete Fourier Transform (DFT)/Fast Fourier Transform (FFT). FFT will provide accurate harmonic estimation when the sampling is synchronous. If the sampling is asynchronous it leads to spectral leakage and picket fence effe…
In this paper graphene nanoribbons (GNRs) are proposed as a new conductive material for monolithic microwave integrated circuit (MMIC) transmission lines to replace existing materials, because they have the potential to offer better performance. Multi-layered graphene films were grown on SiO2/Si wafers coated with Ni…
Majid Hassanpour Dehnavi , Ali Asghar Asgharian Jeddi, Ali Akbar Gharehaghaji, Mohammad Esmaeil Yazdanshenas & Saeid Rezaei Zarchi 1 Technical and Engineering Department, Islamic Azad University (Science & Research Branch), Hesarak, Tehran, Iran 2 Department of Textile Engineering, Amirkabir University of Technology,…
A new chrome tanning method was designed using wringing (10 kg/cm2) and ultrasound (28 kHz, 300W). The grain down pickled skin was put into the penetration tank to let the chrome tanning agent penetrate for 3min. After penetration, the skin was transferred into the fixation tank to basify for 3min. Then the skin was a…
Abstract Fe–Fe 2 O 3 –MnO 2 –sucrose–epoxy resin and O 2 as reaction system and feed gas, separately, were used to prepare micro‐nano hollow multiphase ceramic microspheres containing MnFe 2 O 4 absorbent by self‐reactive quenching method which is integrated with flame jet, self‐propagating high‐temperature synthesis…
PEG-modified magnetic Fe3O4 (Fe3O4-PEG) nanoparticles were sythesized using a solvothermal reaction and characterized with transmission electron microscopy (TEM) and thermo gravimetric analysis (TGA). The photothermal effect and photothermal destruction of cancer cells were evaluated. Then the doxorubicin loaded Fe3O4…
The design and optimization of air-electrode structure play a prominent role in metal–air battery which is one of the most promising technologies among various electrochemical energy storage systems. Graphene offers porous path for the reactant transport in an electrode than conventional Carbon black powder, which hel…
In this research, � -H4PW12O40 heteropoly acid (HPAs) is used as building blocks for designation functional materials novel organic–inorganic hybrid polyoxometalate (POM), H4PW12O40 · nHMPA, with hexamethylphosphoramide (HMPA) as the organic ligand. Different host-guest systems are then designed based on the prepared…
This paper is concerned with the surface and small scale effects on transverse vibration of a viscoelastic single-layered graphene sheet (SLGS) subjected to an in-plane magnetic field. The SLGS is surrounded by an elastic medium which is simulated as Visco-Pasternak foundation. In order to investigate the small scale…
In this paper, for the first time we have studied theoretically the effect of exchange-correlation holes around electrons in GaAlAs/GaAs/GaAlAs nanostructure on the temperature-dependent dynamic dielectric function of two-dimensional electron gas by employing random phase, STLS and Hubbard approximations. Also, we hav…
A system for the investigation of the magnetic properties of materials under high pressure is fabricated based on diamond anvil cell (DAC) technology. The system is designed with an improved coil arranged around the diamond of a non-magnetic DAC. Using this system, the magnetic transition of ferromagnetic (Fe) sample…
peer reviewed
The MMS-2B wear machine was used to study abrasion wear of work rolls in cold rolling by simulating emulsion cooling during the cold rolling process. The work roll materials used were 4%Cr, same as those in industrial production. The surface SEM scanning photographs were taken every 30 minutes until the friction exper…
The magnetoresistivity and the Hall and Shubnikov-de Haas effects in heterostructures with a single 20.2-nm-wide quantum well made from the gapless semiconductor HgTe are studied experimentally. The measurements are performed on gated samples over a wide range of electron and hole densities. The data obtained are used…
Power and energy supply for the continuously increasing number of devices related to the so called Smart Cities is a key technical issue with many associated challenges. Energy storage has become as essential as IT technologies. As Smart Cities evolve to include new capabilities, the dependence on electricity will con…