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Akram, F.,Hussain, A.,Malik, R.A.,Song, T.K.,Kim, W.J.,Kim, M.H. Ceramurgica ; Elsevier Science Ltd 2017 CERAMICS INTERNATIONAL Vol.43 No.suppl1
In this work, lead-free MnO<SUB>2</SUB> (0.6mol%) and CuO (0.4mol%) mixed (1-x)(0.675BiFeO<SUB>3</SUB> - 0.325BaTiO<SUB>3</SUB>) - xLiTaO<SUB>3</SUB> (BF-BT-xLT+MC, with x = 0-2mol%) ceramics were fabricated by a conventional solid-state reaction followed by quenching process. The crystal structure and microstructure of the BF-BT-xLT+MC ceramics were investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. Enhancement in dielectric, ferroelectric and field-induced strain properties were observed at optimum amount of LT addition in BF-BT+MC ceramics. The ferroelectric loops shows significant enhancement in polarization response for 1mol% LT-modified in BF-BT+MC composition. In addition, for the same composition a substantial improvement (70%) in comparison with the pure BF-BT ceramics was realized in the dynamic piezoelectric coefficient (d<SUP>*</SUP><SUB>33</SUB> = S<SUB>max</SUB>/E<SUB>max</SUB>).
Inactivation of bacterial pathogens on lettuce, sprouts, and spinach using hurdle technology
Ngnitcho, P.F.K.,Khan, I.,Tango, C.N.,Hussain, M.S.,Oh, D.H. Elsevier Science 2017 Innovative food science & emerging technologies Vol.43 No.-
<P>Effects of chemical treatment using slightly acidic electrolyzed water (SAEW), fumaric acid (FA), or calcium oxide (CaO) and physical treatment using ultrasonication (US), micro-bubbles (MB), or ultraviolet (UV) to inactivate bacterial pathogens Listeria monocytogenes, Escherichia call 0157:H7, Staphylococcus aureus, and Salmonella spp. on lettuce, spinach, and sprouts were determined. Fresh produce inoculated with bacterial pathogens (similar to 9 log CFU/mL) was immersed in distilled water (DW), SAEW, FA (0.5%), or CaO (0.2%) alone or in combination at 23 +/- 2 degrees C for 3 min followed by treatment with US, MB for 3 min, or UV for 10 min. Effects of combined treatment on shelf-life of lettuce at 4 degrees C and 23 +/- 2 degrees C were also determined in this study. Results revealed that the use of a combination of CaO + SAEW + FA + US exhibited significant reduction (p < 0.05) for bacterial pathogen on fresh produce compared to individual treatment or other combinations. CaO + SAEW + FA + US treatment exhibited highest reduction of E. coli 0157:H7, S. aureus, L. monocytogenes and Salmonella spp. by 4.7, 4.9, 4.84 and 5.08 log CFU/g, respectively on lettuce as compared to spinach and sprouts. Microbial count reducing capability for combined treatment methods were ranked in the following order: SAEW + FA < CaO + SAEW + FA < CaO + SAEW + FA + US. However, introduction of US to CaO + SAEW + FA treatment resulted in little detrimental effect on the overall quality of lettuce. Moreover, CaO + SAEW + FA treatment effectively enhanced the shelf-life of lettuce stored at 4 degrees C and 23 +/- 2 degrees C by about 6 days and 3 days, respectively as compared to control (DW treatment), with longer lag time (23.11 h on lettuce) for naturally occurring bacteria on fresh produce. These findings suggest that significant synergistic benefit could be obtained from combined sanitizer treatment to eliminate bacterial pathogens from fresh produce.</P>
Bernardi, F.,Grass, M.E.,Hong, Y.P.,Chang, R.,Jabeen, N.,Zhang, C.,Eichhorn, B.W.,Seo, B.,Alayoglu, S.,Hussain, Z.,Joo, S.H.,Liu, Z. Elsevier Science Publishers 2016 CATALYSIS TODAY - Vol.260 No.-
<P>Rh0.5Pd0.5/CeO2 bimetallic nanoparticles were subjected to reducing and oxidizing atmospheres at different temperatures and characterized by means of the Ambient Pressure X-Ray Photoelectron Spectroscopy (AP-XPS). The surface atomic population is calculated for all cases. By using a high temperature pretreatment at 480 degrees C in H-2 atmosphere, it was possible to control the surface atomic population with Pd atoms frozen at the skin layer even in an oxidizing atmosphere, which is not observed without high temperature pre-treatment (Rh atoms at the skin layer). The change of the Rh/Pd surface segregation behavior after the high temperature pre-treatment is attributed to the geometrical factor of Strong Metal Support Interaction (SMSI) effect, i.e., the occurrence of the ceria capping layer around nanoparticles. (C) 2015 Elsevier B.V. All rights reserved.</P>
Recommended nuclear data for medical radioisotope production: diagnostic positron emitters
Tá,rká,nyi, F. T.,Ignatyuk, A. V.,Hermanne, A.,Capote, R.,Carlson, B. V.,Engle, J. W.,Kellett, M. A.,Kibé,di, T.,Kim, G. N.,Kondev, F. G.,Hussain, M.,Lebeda, O.,Luca, A.,Nagai, Y.,Na Springer-Verlag 2019 Journal of Radioanalytical and Nuclear Chemistry Vol.319 No.2
Energy effects on MHD flow of Eyring's nanofluid containing motile microorganism
Sharif, Humaira,Naeem, Muhammad N.,Khadimallah, Mohamed A.,Ayed, Hamdi,Bouzgarrou, Souhail Mohamed,Al Naim, Abdullah F.,Hussain, Sajjad,Hussain, Muzamal,Iqbal, Zafar,Tounsi, Abdelouahed Techno-Press 2020 Advances in concrete construction Vol.10 No.4
The impulse of this paper is to examine the influence of unsteady flow comprising of Eyring-Powell nanofluid over a stretched surface. This work aims to explore efficient transfer of heat in Eyring-Powell nanofluid with bio-convection. Nanofluids possess significant features that have aroused various investigators because of their utilization in industrial and nanotechnology. The influence of including motile microorganism is to stabilize the nanoparticle suspensions develop by the mixed influence of magnetic field and buoyancy force. This research paper reveals the detailed information about the linearly compressed Magnetohydrodynamics boundary layer flux of two dimensional Eyring-Powell nanofluid through disposed surface area due to the existence of microorganism with inclusion the influence of non- linear thermal radiation, energy activation and bio-convection. The liquid is likely to allow conduction and thickness of the liquid is supposed to show variation exponentially. By using appropriate similarity type transforms, the nonlinear PDE's are converted into dimensionless ODE's. The results of ODE's are finally concluded by employing (HAM) Homotopy Analysis approach. The influence of relevant parameters on concentration, temperature, velocity and motile microorganism density are studied by the use of graphs and tables. We acquire skin friction, local Nusselt and motil microorganism number for various parameters.
van de Ven, A.L.,Kim, P.,Haley, O.,Fakhoury, J.R.,Adriani, G.,Schmulen, J.,Moloney, P.,Hussain, F.,Ferrari, M.,Liu, X.,Yun, S.H.,Decuzzi, P. Elsevier Science Publishers 2012 Journal of controlled release Vol.158 No.1
Nanoparticles for cancer therapy and imaging are designed to accumulate in the diseased tissue by exploiting the Enhanced Permeability and Retention (EPR) effect. This limits their size to about 100nm. Here, using intravital microscopy and elemental analysis, we compare the in vivo localization of particles with different geometries and demonstrate that plateloid particles preferentially accumulate within the tumor vasculature at unprecedented levels, independent of the EPR effect. In melanoma-bearing mice, 1000x400nm plateloid particles adhered to the tumor vasculature at about 5% and 10% of the injected dose per gram organ (ID/g) for untargeted and RGD-targeted particles respectively, and exhibited the highest tumor-to-liver accumulation ratios (0.22 and 0.35). Smaller and larger plateloid particles, as well as cylindroid particles, were more extensively sequestered by the liver, spleen, and lungs. Plateloid particles appeared well-suited for taking advantage of hydrodynamic forces and interfacial interactions required for efficient tumoritropic accumulation, even without using specific targeting ligands.
An innovative system for novel vibration of rotating FG shell with combination of fraction laws
Khadimallah, Mohamed Amine,Hussain, Muzamal,Al-Thobiani, Faisal,Elbahar, Mohamed,Al Naim, Abdullah F.,Elimame, Elaloui,Harbaoui, Imene,Tounsi, Abdelouahed Techno-Press 2021 Advances in concrete construction Vol.12 No.2
A new model with the combination of the Galerkin's technique have been developed for functionally graded cylindrical shell. For the vibrations of rotating cylindrical shells, three volume fraction laws i.e., polynomial, trigonometric and exponential are combined mathematically. The obtained results show that by increasing length-to-radius and height-to-radius ratios, the backward and forward frequency value decreases and increases, respectively. Moreover, on increasing the rotating speed, the backward frequencies increases and forward frequencies decreases. The results generated furnish the evidence regarding applicability of present model with clamped-clamped boundary conditions and also verified by earlier published literature.
Confinement effectiveness of Timoshenko and Euler Bernoulli theories on buckling of microfilaments
Taj, Muhammad,Khadimallah, Mohamed A.,Hussain, Muzamal,Mahmood, Shaid,Safeer, Muhammad,Al Naim, Abdullah F.,Ahmad, Manzoor Techno-Press 2021 Advances in concrete construction Vol.11 No.1
Rice Husk Ash (RHA) geopolymer paste activated by sodium aluminate were characterized by X-ray diffractogram (XRD), scanning electron microscope (SEM), energy dispersion X-Ray analysis (EDAX)and fourier transform infrared spectroscopy (FTIR). Five series of RHA geopolymer specimens were prepared by varying the Si/Al ratio as 1.5, 2.0, 2.5, 3.0 and 3.5. The paper focuses on the correlation of microstructure with hardened state parameters like bulk density, apparent porosity, sorptivity, water absorption and compressive strength. XRD analysis peaks indicates quartz, cristobalite and gibbsite for raw RHA and new peaks corresponding to Zeolite A in geopolymer specimens. In general, SEM micrographs show interconnected pores and loosely packed geopolymer matrix except for specimens made with Si/Al of 2.0 which exhibited comparatively better matrix. Incorporation of Al from sodium aluminate were confirmed with the stretching and bending vibration of Si-O-Si and O-Si-O observations from the FTIR analysis of geopolymer specimen. The dense microstructure of SA2.0 correlate into better performance in terms of 28 days maximum compressive strength of 16.96 MPa and minimum for porosity, absorption and sorptivity among the specimens. However, due to the higher water demand to make the paste workable, the value of porosity, absorption and sorptivity were reportedly higher as compared with other geopolymer systems. Correlation regression equations were proposed to validate the interrelation between physical parameters and mechanical strength. RHA geopolymer shows comparatively lower compressive strength as compared to Fly ash geopolymer.
Interaction of casson nanofluid with Brownian motion: Temperature profile with shooting method
Iqbal, Waheed,Jalil, Mudassar,Khadimallah, Mohamed A.,Hussain, Muzamal,Naeem, Muhammad N.,Al Naim, Abdullah F.,Tounsi, Abdelouahed Techno-Press 2021 Advances in nano research Vol.10 No.4
In present study, the numerical investigations are carried out for effects of suction and blowing on boundary layer slip flow of casson nano fluid along permeable stretching cylinder in an exponential manner. The modeled PDEs are changed into nonlinear ODEs through appropriate nonlinear transformations. Change in physical quantities like friction coefficient, Nusselt and Sherwood numbers with variation of the aforementioned parameters are also examined and their numerical values are listed in the form of tables. Effects of Reynold number, suction parameter, Prandtl number, Lewis number, Brownian motion parameter and thermophoresis parameter are seen graphically with temperature profile.
A progressive route for tailoring electrical transport in MoS2
Shehzad, M. A.,Hussain, S.,Khan, M. F.,Eom, J.,Jung, J.,Seo, Y. Springer Science + Business Media 2016 NANO RESEARCH Vol.9 No.2
<P>Typically, molybdenum disulfide (MoS2) synthesized by chemical vapor deposition (CVD) is polycrystalline; as a result, the scattering of charge carriers at grain boundaries can lead to performances lower than those observed in exfoliated single-crystal MoS2. Until now, the electrical properties of grain boundaries have been indirectly studied without accurate knowledge of their location. Here, we present a technique to measure the electrical behavior of individual grain boundaries in CVD-grown MoS2, imaged with the help of aligned liquid crystals. Unexpectedly, the electrical conductance decreased by three orders of magnitude for the grain boundaries with the lowest on/off ratio. Our study provides a useful technique to fabricate devices on a single-crystal area, using optimized growth conditions and device geometry. The photoresponse, studied within a MoS2 single grain, showed that the device responsivity was comparable with that of the exfoliated MoS2-based photodetectors.</P>