Research and development of lead-free piezoelectric materials are still the hottest topics in the field of piezoelectricity. One of the most promising lead-free family of compounds to replace lead zirconate-titanate for actuators is that of Bi0.50Na0.50TiO₃ (BNT) based solid solutions. The pseudo-binary (1 - x)Bi0.50Na0.50TiO₃-xBa1 - yCayTiO₃ system has been proposed for high temperature capaci...

The molecular structure of a candidate pharmaceutical drug compound is routinely modified during lead optimisation. While the difference in pharmacological effect may be subtle, on solid-state landscape...

In this article, we present an alternative expansion scheme called Floquet-Magnus expansion (FME) used to solve a time-dependent linear differential equation which is a central problem in quantum physics in general and solid-state nuclear magnetic resonance (NMR) in particular. The commonly used methods to treat theoretical problems in solid-state NMR are the average Hamiltonian theory (AHT) an...

Oxides of the formula Nd2Ba2CaCu2_xZnxTi3Oi4 (x = 0:0, 0.5, 1.0, 1.5, 2.0) have been successfully prepared by high temperature ceramic route at 1025 8C, as well as by the low temperature citrate precursor route at 800 8C. The copper-rich compounds obtained by the ceramic route (x = 0-1.0) are found to have a tetragonal structure, with the a and c parameters increasing with zinc substitution, fr...

The amount of petroleum hydrocarbon and heavy metals in the sediment of the Persian Gulf’s shore, at 8 selected stations were determined and showed the maximum of 143.6 and 58.6 mg/kg sediment, respectively, both maximum amounts were related to Emam Hassan zone which is located at 50 kilometers to west Boushehr port. Bioremediation of contaminated sediment were studied in slurry and solid-state...

in the present study, the capability of accumulative roll bonding (arb) and subsequent heat-treatment to fabricate solid solution from a multilayered cu/zn/al was investigated. two post-heat treatment (one-step and two-step) routes were proposed. in the first, the arb processed material was heated to 800 c for 5:30 hours and allowed to cool slowly in a furnace (one-step route). in the second (t...

High overhead involved in flooding while route creation is a limiting factor of Dynamic Source Routing (DSR) protocol applied for mobile ad hoc networks (MANETs). During data delivery, it seems that we fully benefit from DSR if the route is not long enough. In this paper, we propose two modifications of DSR algorithm to enhance its performance. In the modified approach of DSR, to reduce broadca...