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    Article

    Dust-acoustic envelope solitons and rogue waves in an electron depleted plasma

    The nonlinear propagation of dust acoustic (DA) waves (DAWs) in an unmagnetized electron depleted dusty plasma (containing opposite polarity warm dust grains and non-extensive positive ions) has been theoretic...

    J. Akter, N. A. Chowdhury, A. Mannan, A. A. Mamun in Indian Journal of Physics (2021)

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    Article

    Dust–Acoustic Envelope Solitons in an Electron-Depleted Plasma

    A theoretical investigation of the modulational instability (MI) of dust–acoustic waves (DAWs) by deriving a nonlinear Schrödinger equation in an electron-depleted opposite polarity dusty plasma system contain...

    J. Akter, N. A. Chowdhury, A. Mannan, A. A. Mamun in Plasma Physics Reports (2021)

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    Article

    Ion-acoustic shock waves in magnetized pair-ion plasma

    A theoretical investigation associated with obliquely propagating ion-acoustic shock waves (IASHWs) in a three-component magnetized plasma having inertialess non-extensive electrons, inertial warm positive, an...

    T. Yeashna, R. K. Shikha, N. A. Chowdhury, A. Mannan in The European Physical Journal D (2021)

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    Article

    First and second-order dust-ion-acoustic rogue waves in non-thermal plasma

    A nonlinear Schrödinger equation (NLSE) has been derived by employing reductive perturbation method for investigating the modulational instability of dust-ion-acoustic waves (DIAWs) in a four-component plasma ...

    S. Banik, R. K. Shikha, A. A. Noman, N. A. Chowdhury in The European Physical Journal D (2021)

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    Article

    Dust-Acoustic Rogue Waves in Opposite Polarity Dusty Plasma Featuring Nonextensive Statistics

    Modulational instability of dust-acoustic waves, which propagate in an opposite polarity dusty plasma system containing inertial warm negatively and positively charged massive dust grains as well as nonextensive

    D. M. S. Zaman, A. Mannan, N. A. Chowdhury, A. A. Mamun in High Temperature (2020)

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    Article

    Dust-acoustic rogue waves in non-thermal plasmas

    The nonlinear propagation of dust-acoustic waves (DAWs) and associated dust-acoustic rogue waves (DARWs), which are governed by the nonlinear Schrödinger equation, is theoretically investigated in a four-compo...

    S K Paul, N A Chowdhury, A Mannan, A A Mamun in Pramana (2020)

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    Article

    Dust-acoustic Rogue Waves in Four-Component Plasmas

    A theoretical investigation has been made on modulational instability (MI) and dust-acoustic (DA) rogue waves (DARWs) in a four-component dusty plasma medium containing inertial negatively charged massive heav...

    S. Jahan, A. Mannan, N. A. Chowdhury, A. A. Mamun in Plasma Physics Reports (2020)

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    Article

    Dust-acoustic rogue waves in an electron depleted plasma

    A rigorous theoretical investigation is made to study the characteristics of dust-acoustic (DA) waves (DAWs) in an electron depleted unmagnetized opposite polarity dusty plasma system that contains super-ther...

    R. K. Shikha, N. A. Chowdhury, A. Mannan, A. A. Mamun in The European Physical Journal D (2019)

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    Article

    Modulational Instability, Ion-Acoustic Envelope Solitons, and Rogue Waves in Four-Component Plasmas

    Modulational instability (MI) of ion-acoustic waves (IAWs) has been theoretically investigated in a plasma system which is composed of inertial warm adiabatic ions, isothermal positrons, and two-temperature su...

    N. A. Chowdhury, A. Mannan, M. M. Hasan, A. A. Mamun in Plasma Physics Reports (2019)

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    Article

    Decomposition analysis of binary polyfunctional urethane monomer mixtures

    Thermal decomposition in three binary monomer mixture systems containing an experimentally synthesized monomer (EXP3) and a commercial polyfunctional urethane monomer (U–4TXA) was examined in terms of differen...

    R PRIYAWAN, K WAKASA, N. A CHOWDHURY in Journal of Materials Science: Materials in… (1997)

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    Article

    Dental application of binary urethane monomer mixtures:strengthened resin matrix

    The strengthened resin matrices in six experimental binary visible light-cured (VLC) urethane monomer mixtures were examined in terms of mechanical strength. A 60 wt% bis-GMA/40 wt% binary monomer mixture was ...

    N. A CHOWDHURY, K WAKASA, R PRIYAWAN in Journal of Materials Science: Materials in… (1997)

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    Article

    Matrix strengthening in new ternary bis-GMA/TEGDMA/urethane resin systems

    N. A. Chowdhury, K. Wakasa, R. Priyawan, M. Yamaki in Journal of Materials Science Letters (1996)

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    Article

    Absorbance spectra of photosensitizers in dental visible light-cured resins (infrared analysis)

    K. Wakasa, N. A. Chowdhury, R. Priyawan, Y. Yoshida in Journal of Materials Science Letters (1996)

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    Article

    Effect of filler content on mechanical strength in bis-GMA-based resins with urethane linkages

    Bis-GMA-based visible-light-cured resins containing urethane linkages exhibited improved hardness and strength by addition of filler to the unfilled resins. The urethane monomers in the resins strengthened the...

    N. A. Chowdhury, K. Wakasa, R. Priyawan in Journal of Materials Science: Materials in… (1995)

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    Article

    Improvement of bis-GMA-based resins by urethane linkages: DTA and DSC thermal properties

    Experimental bis-GMA/TEGDMA/urethane resins were investigated using synthesized urethane monomers to improve thermal properties. DTA (differential thermal analysis) results show that curing temperatures were 1...

    R. Priyawan, K. Wakasa, N. A. Chowdhury in Journal of Materials Science: Materials in… (1995)

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    Article

    Production of cellulases and saccharification of lignocellulosics by A. Micromonospora sp.

    A locally isolated strain of Micromonospora sp. when grown on different natural cellulosic substrates gave the highest activity of carboxymethylcellulase (34 U/ml) and Avicelase (0.9 U/ml) on rice straw. Sugar ca...

    N.A. Chowdhury, M. Moniruzzaman, N. Nahar in World Journal of Microbiology and Biotechn… (1991)