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Naveed Ahmed,Adnan,Umar Khan,Syed Tauseef Mohyud-Din,Ilyas Khan,Kottakkaran Sooppy Nisar 한국자기학회 2020 Journal of Magnetics Vol.25 No.2
The objectives of the research are to explored the heat and mass transport over a paraboloid surface of revolution by taking the effects of Lorentz force, resistive heating and internal heat source. The dimensionless version of the model was attained via similarity transformations. Then, for solution purpose, RK scheme is utilized and performed computations for the flow fields. The influence of different physical quantities on the flow characteristics described comprehensively via graphs. It is examined that the stretching index parameter m opposes the fluid velocity and the temperature enhances for Eckert number. Moreover, significant impacts of the Schmidt number are observed for mass transfer gradient.
Salman Ali Khan,Tauseef Ahmed,Fazli Akram,Jihee Bae,Soo Yong Choi,Tran Thi Thanh,Mingyu Kim,송태권,성연수,Myong‑Ho Kim,Soonil Lee 한국세라믹학회 2020 한국세라믹학회지 Vol.57 No.3
In this study, 0.65Bi1.05FeO3–0.35BaTiO3 (BF-35BT) lead-free piezoelectric ceramics were prepared using a conventional solid-state method to determine the effects of sintering temperature on their microstructures and electrical properties. The average grain size increased with sintering temperature, but not significantly, and the relative density of the ceramics increased and then decreased at high sintering temperatures due to the volatilization of Bi2O3. At the optimal sintering temperature (1030 °C), BF-35BT ceramics showed minimum coercive field (Ec) with enhanced remanent polarization (Pr) and consequently resulted in a high converse piezoelectric coefficient (d* 33) value of 305 pm/V. The results indicate that the optimum sintering temperature, maximum relative density, and appropriate grain size, which are significantly related to the domain size and configuration, as well as the minimum concentration of associated charged defects, are critical factors that influence the piezoelectric performance of BF-35BT ceramics.
M. Aslam Noor,Khalida Inayat Noor,Syed Tauseef Mohyud-Din,Noor Ahmed Shaikh 한국전산응용수학회 2009 Journal of applied mathematics & informatics Vol.27 No.5
In this paper, we apply a new decomposition method for solving initial and boundary value problems, which is due to Noor and Noor [18]. The analytical results are calculated in terms of convergent series with easily computable components. The diagonal Pade approximants are applied to make the work more concise and for the better understanding of the solution behavior. The proposed technique is tested on boundary layer problem; Thomas-Fermi, Blasius and sixth-order singularly perturbed Boussinesq equations. Numerical results reveal the complete reliability of the suggested scheme. This new decomposition method can be viewed as an alternative of Adomian decomposition method and homotopy perturbation methods. In this paper, we apply a new decomposition method for solving initial and boundary value problems, which is due to Noor and Noor [18]. The analytical results are calculated in terms of convergent series with easily computable components. The diagonal Pade approximants are applied to make the work more concise and for the better understanding of the solution behavior. The proposed technique is tested on boundary layer problem; Thomas-Fermi, Blasius and sixth-order singularly perturbed Boussinesq equations. Numerical results reveal the complete reliability of the suggested scheme. This new decomposition method can be viewed as an alternative of Adomian decomposition method and homotopy perturbation methods.
Faiza Khan,Talha Mubashir,Kainat Ahmed,Muhammad Shahoor,Abdul Mateen,이순일,Tauseef Ahmed 한국전기전자재료학회 2023 Transactions on Electrical and Electronic Material Vol.24 No.6
This paper investigates the electrical resistivity of piezoresistive CNT/PVAc-based nanocomposites. Different CNTs wt. % containing multi-walled carbon nanotubes (MWCNTs) dispersed in polyvinyl acetate and deposited on a flexible polymer substrate of ethylene glycol methacrylate (PVAc) matrix using conventional methods. The morphological changes were observed using SEM analysis. The resulting composites were subjected to compression by applying different values of pressure (9.3-2348.8 kPa). The results show that for lower wt. % of CNTs, the value of resistance decreased (~0.01526MΩ) with increasing applied pressure, which could be attributed to increasing the conducting paths with compression. However, increasing the concentration of CNTs to a higher value > 1.0 wt. %, results show the opposite behavior, an increase in resistance with an increase in pressure, which could be ascribed to the reorientation, bending, and entanglement of CNTs blocking the conducting paths. The percolation threshold for CNT/PVAc nanocomposite is 0.1 wt. %. This study provides valuable insights into the structural and sensing properties of CNT-based pressure Nanosensors and highlights their potential for use in various applications.
Noor, Muhammad Aslam,Noor, Khalida Inayat,Mohyud-Din, Syed Tauseef,Shaikh, Noor Ahmed The Korean Society for Computational and Applied M 2009 Journal of applied mathematics & informatics Vol.27 No.5
In this paper, we apply a new decomposition method for solving initial and boundary value problems, which is due to Noor and Noor [18]. The analytical results are calculated in terms of convergent series with easily computable components. The diagonal Pade approximants are applied to make the work more concise and for the better understanding of the solution behavior. The proposed technique is tested on boundary layer problem; Thomas-Fermi, Blasius and sixth-order singularly perturbed Boussinesq equations. Numerical results reveal the complete reliability of the suggested scheme. This new decomposition method can be viewed as an alternative of Adomian decomposition method and homotopy perturbation methods.