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RISS 인기검색어
- 검색키워드
- 저자 : Tariq Javed (검색결과 5 건)
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Tariq Javed,A. H. Hamid,B. Ahmed,N. Ali 한국물리학회 2017 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.71 No.12
An analysis of the peristaltic flow in an inclined channel for different wave forms is carried out in this paper. The developed mathematical model is represented by a set of partial differential equations. The finite element method is implemented to solve the governing equations for stream function and vorticity. The obtained results are valid beyond the long wavelength and low Reynolds number limits. Important features of peristaltic transport are discussed for the variation of magnetic field, Reynolds and wave numbers. The obtained results, when compared with the results available in literature are in good agreement.
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Asif Javed,Musaddaq Azeem,Jakub Wiener,Monica Thukkaram,Jana Saskova,Tariq Mansoor 한국섬유공학회 2021 Fibers and polymers Vol.22 No.1
Zinc oxide (ZnO) nano particles have great importance in textile industry, because of remarkable efficiency andmultiple applications such as antibacterial, UV protection, self-cleaning etc. The aim of this research work was in situ growthof ZnO nano particles on 100 % cotton fabrics with the help of ultrasonic acoustic waves. Zinc nitrate hexahydrate[Zn(NO3)2·6H2O] and sodium hydroxide (NaOH) were used as precursors for ZnO growth. Scanning electron microscopy(SEM), Energy-dispersive X-ray spectroscopy (EDS), X-ray powder diffraction (XRD), Fourier-transform infraredspectroscopy (FTIR) were done to examine the surface morphology and characteristics of deposited nano particles. Furthermore the functional properties i.e. antibacterial, UPF rating, self cleaning, air permeability and bending rigidity of thedeveloped samples were evaluated. The results regarding SEM, EDS, XRD and FTIR confirmed the deposition of ZnO nanoparticleson cotton fabric with pure hexagonal wurtzite crystalline structure. The developed samples showed excellent resultsfor antibacterial, UPF rating and self cleaning with increased bending rigidity and slightly decreased in air permeability.
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Fazal Abbas,Tariq Jan,Javed Iqbal,M. Sajjad H. Naqvi 한국물리학회 2015 Current Applied Physics Vol.15 No.11
In the present study, structural, optical, magnetic properties as well as cytotoxicity of undoped and Fe doped Ceria (CeO2) nanoparticles synthesized by simple soft chemical method have been reported. SEM and XRD results have shown that the synthesized samples are comprised of ultrafine spherical nanoparticles having single phase cubic fluorite structure of CeO2. Raman spectroscopy results have depicted a red shift in F2g mode with Fe doping which reveals enhancement in the oxygen vacancies. The optical band gap calculated from UVevisible absorption spectra has been found to vary unsystematically with Fe doping which is associated with the creation of impurity level and abundance in oxygen vacancies with Fe doping. The oxygen vacancies have introduced the room temperature ferromagnetism (RTFM) in undoped and Fe doped CeO2 nanoparticles. The saturation magnetization (Ms) value of pristine CeO2 nanoparticles has been found to be 0.00083 emu/g which is increased up to 0.0126 emu/g for 7% Fe doped nanoparticles. For cytotoxicity tests, the synthesized nanoparticles induced effects on Neuroblastoma cancer cells & HEK-293 healthy cells have been analyzed via CCK-8 analysis. It has been observed that the prepared undoped and Fe doped CeO2 nanoparticles have nontoxic nature towards healthy cells while they are extremely toxic towards cancerous cells. Furthermore, the anticancer activity is found to enhance with Fe doping. The selective toxicity and enhancement in anticancer activity with Fe doping has observed to be strongly correlated with reactive oxygen species (ROS) generation.
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A. H. Hamid,Tariq Javed,N. Ali 한국물리학회 2018 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.73 No.9
In the present investigation, we have studied the magnetohydrodynamic (MHD) heat transfer of peristaltic ow in a tube. The analysis is made without imposing any assumption to obtain the streamline and isothermal line directly. Galerkin's finite element method has been used on the governing Navier-Stoke's equation in the form of -!. The graphs of the computed longitudinal velocity, temperature and pressure are plotted against different value of the emerging parameter by using the stream function and vorticity. The results are valid beyond the long wavelength and the low Reynolds number limits. We conclude that higher values of the parameters are not independent of the time mean ow rate.
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Fall detection through acoustic Local Ternary Patterns
Adnan, Syed M.,Irtaza, Aun,Aziz, Sumair,Ullah, M. Obaid,Javed, Ali,Mahmood, Muhammad Tariq Elsevier 2018 Applied acoustics Vol.140 No.-
<P><B>Abstract</B></P> <P>In this paper, we propose a framework that detects falls by using acoustic Local Ternary Patterns (acoustic-LTPs) by analyzing environmental sounds. The proposed method suppresses silence zones in sound signals and distinguishes overlapping sounds. Acoustic features are extracted from the Separated source components by using the proposed acoustic-LTPs. Subsequently, fall events are detected through a support vector machine (SVM) based classifier. The performance of the proposed descriptor is evaluated against state-of-the-art methods that are applied on well-known sound databases. A comparative analysis demonstrates that the proposed descriptor is more powerful and reliable in terms of fall detection than other methods, and it also performs well in a multi-class environment. Moreover, the proposed descriptor possesses a rotation invariant property, and therefore, it demonstrates significant resistance against the rotated sound signals.</P>
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