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Nawaz, A.,Sharif, R.,Rhee, H.W.,Singh, P.K. Korean Society of Industrial and Engineering Chemi 2016 Journal of industrial and engineering chemistry Vol.33 No.-
<P>Electrode and electrolytes are always playing a key role in developing good efficient devices. This paper reports the synthesis, characterization and application of low viscosity ionic liquid (1-ethyl 3-methyl imidazolium dicyanamide) incorporated into polymer matrix (PVDF-HFP). The samples were characterized using various experimental tools. Complex impedance spectroscopy shows that conductivity of polymer host increases with increasing ionic liquid (IL) concentration attains maxima and then decreases. Optical microscopy and scanning electron microscopy (SEM) reveals the reduction of crystalline matrix of polymer host by adding IL. The primarily fabricated devices using maximum conductivity film affirms that this material is promising candidate for dye sensitized solar cell (DSSC) and supercapacitor application. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.</P>
The investigation of Magnetohydrodynamic nanofluid flow with Arrhenius energy activation
Sharif, Humaira,Khadimallah, Mohamed A.,Naeem, Muhammad Nawaz,Hussain, Muzamal,Mahmoud, S.R.,Al-Basyouni, K.S.,Tounsi, Abdelouahed Techno-Press 2021 Advances in nano research Vol.10 No.5
In this article, an analytically and numerically 3D nanoliquid flow by a porous rotatable disk is presented in the presence of gyrotactic microorganisms. The mathematical model in the form of partial differential system is transmuted into dimensionless form by utilizing the appropriate transformation. The homotopy analysis approach is applied to attain the analytic solution of the problem. The effect of promising parameters on velocity distribution, temperature profile, nanoparticles volume fraction and motile microorganism distribution field are evaluated through graphs and in tabular form. The existence of Brownian motion and thermophoresis impacts are more proficient for heat transfer enhancement. Further the unique features like heat absorption/generation and energy activation are also examined for the present flow problem. The obtained results are compared with the earliear investigation to check the accuracy of present model.
Flow of MHD Powell-Eyring nanofluid: Heat absorption and Cattaneo-Christov heat flux model
Sharif, Humaira,Khadimallah, Mohamed A.,Naeem, Muhammad Nawaz,Hussain, Muzamal,Hussain, Sajjad,Tounsi, Abdelouahed Techno-Press 2021 Advances in nano research Vol.10 No.3
During the previous few years, phenomenon of bioconvection along with the use of nanoparticles showed large number of applications in technological and industrial field. This paper analyzed the bioconvection phenomenon in magnetohydrodynamic boundary layer flow of a Powell-Eyring nanoliquid past a stretchable cylinder with Cattaneo-Christov heat flux. In addition, the impacts of chemical reaction and heat generation/absorption parameter are considered. By the use of appropriate transformation, the governing PDEs (nonlinear) have been transformed and formulated into nonlinear ODEs. The resulting nonlinear ODEs subjected to relevant boundary conditions are solved analytically through homotopy analysis method which is programmed in Mathematica software. Graphical and numerical results versus physical quantities like velocity, temperature, concentration and motile microorganism are investigated under the impact of physical parameters. It is noted that velocity profile enhances as the curvature parameter A and Eyring-Powell fluid parameter M increases but a decline manner for large values of buoyancy ratio parameter Nr and bio-convection Rayleigh number Rb. In the presence of Prandtl number Pr, Eyring-Powell fluid parameter M and heat absorption parameter , temperature profile decreases. Nano particle concentration profile increases for increasing values of magnetic parameter Ha and thermophoresis parameter Nt. The motile density profile has revealed a decrement pattern for higher values of bio-convection Lewis number Lb and bio-convection peclet number Pe. This study may find uses in bio-nano coolant systems, advance nanomechanical bio-convection energy conversion equipment's, etc.
Lipoxygenase Inhibitory Constituents from Indigofera oblongifolia
Sharif, Ahsan,Ahmed, Ejaz,Malik, Abdul,Riaz, Naheed,Afza, Nighat,Nawaz, Sarfraz Ahmad,Arshad, Muhammad,Shah, Muhammad Raza,Chaudhary, Muhammad Iqbal The Pharmaceutical Society of Korea 2005 Archives of Pharmacal Research Vol.28 No.7
Indigin, alkylated xanthene (1) and indigoferic acid (2) have been isolated from the chloroform soluble fraction of Indigofera oblongifolia, along with $\beta$-sitosterol (3) and 3-hydroxybenzoic acid (4), which are reported for the first time from this species. Their structures were determined through spectroscopic techniques. Both the new compounds 1 and 2 showed significant activity against enzyme lipoxygenase, while 2 further showed moderate inhibition against BChE.
Asmat Nawaz,Rehana Sharif,이희우,Pramod K. Singh 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.33 No.-
Electrode and electrolytes are always playing a key role in developing good efficient devices. This paperreports the synthesis, characterization and application of low viscosity ionic liquid (1-ethyl 3-methylimidazolium dicyanamide) incorporated into polymer matrix (PVDF–HFP). The samples werecharacterized using various experimental tools. Complex impedance spectroscopy shows thatconductivity of polymer host increases with increasing ionic liquid (IL) concentration attains maximaand then decreases. Optical microscopy and scanning electron microscopy (SEM) reveals the reduction ofcrystalline matrix of polymer host by adding IL. The primarily fabricated devices using maximumconductivity film affirms that this material is promising candidate for dye sensitized solar cell (DSSC) andsupercapacitor application.
Humaira Sharif,Muzamal Hussain,Mohamed A. Khadimallah,Muhammad Nawaz Naeem,Hamdi Ayed,Abdelouahed Tounsi 국제구조공학회 2021 Smart Structures and Systems, An International Jou Vol.28 No.6
Current investigation aims to analyze the characteristics of magnetohydrodynamic boundary layer flow of bioconvection Casson fluid in the presence of nano-size particles over a permeable and non-linear stretchable surface. Fluid passes through the Darcy-Forchheimer permeable medium. Effect of different parameter such as Darcy-Forchheimer, porosity parameter, magnetic parameter and Brownian factor are investigated. Increasing Brownian factor leads to the rapid random movement of nanosize particles in fluid flows which shows an expansion in thermal boundary layer and enhances the nanofluid temperature more rapidly. For large values of Darcy-Forchheimer, magnetic parameter and porosity factor the velocity profile decreases. Higher values of velocity slip parameter cause decreasing trend in momentum layer with velocity profile.
Lipoxygenase Inhibitory Constituents from Indigofera oblongifolia
Ahsan Sharif,Ejaz Ahmed,Abdul Malik,Naheed Riaz,Nighat Afza,Sarfraz Ahmad Nawaz,Muhammad Arshad,Muhammad Raza Shah,Muhammad Iqbal Choudhary 대한약학회 2005 Archives of Pharmacal Research Vol.28 No.7
Indigin, alkylated xanthene (1) and indigoferic acid (2) have been isolated from the chloroform soluble fraction of Indigofera oblongifolia, along with β-sitosterol (3) and 3-hydroxybenzoic acid (4), which are reported for the first time from this species. Their structures were determined through spectroscopic techniques. Both the new compounds 1 and 2 showed significant activity against enzyme lipoxygenase, while 2 further showed moderate inhibition against BChE.
Mohamed A. Khadimallah,Imene Harbaoui,Sofiene Helaili,Abdelhakim Benslimane,Humaira Sharif,Muzamal Hussain,Muhammad Nawaz Naeem,Mohamed R. Ali,Aqib Majeed,Abdelouahed Tounsi Techno-Press 2023 Advances in concrete construction Vol.15 No.4
The unsteady mixed convection Casson type MHD nanofluid flow in the stagnation point with motile microorganism around a spinning sphere is investigated. Time dependent flow dynamics is considered. Similarity transformations have been employed to transfer the governing partial differential structure into ordinary differential structure. The impact of distinct parameters is examined via tables and graphs. The impact of rotational parameter (spin) on profiles of velocity profiles, temperature and concentration is revealed for unsteady mixed convection Casson type MHD nanofluid flow. It is observed that it is clear that rotational parameter has a great effect on non-dimensional primary velocity component but rotational parameter has a slight impact on non-dimensional secondary velocity component. The validity of the current investigation is authorized through comparing the existing outcomes with previous published literature.