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| 1 | Improving the Performance of Wheat by Seed Priming Under Saline Conditions显示文摘 | M. Z.Jafar M.Farooq M. A.Cheema I.Afzal S. M.A.Basra M. A.Wahid T.Aziz M.Shahid | 2012 | Journal of Agronomy and Crop Science2012，，1： | 1 |
| 2 | Competing crystallite size and zinc concentration in silica coated cobalt ferrite nanoparticles显示文摘Silica coated(30 wt%) cobalt zinc ferrite(Co1 xZnxFe2O4, x?0, 0.2, 0.3, 0.4, 0.5 and 1) nanoparticles were synthesized by using sol–gel method. Silica acts as a spacer among the nanoparticles to avoid the agglomeration. X-ray diffraction(XRD) reveals the cubic spinel ferrite structure of nanoparticles with crystallite size in the range 37–45 nm. Fourier transform infrared(FTIR) spectroscopy confirmed the formation of spinel ferrite and SiO2. Scanning electron microscopy(SEM) images show that the nanoparticles are nearly spherical and non-agglomerated due to presence of non-magnetic SiO2 surface coating. All these measurements signify that the structural and magnetic properties of Co1 xZnxFe2O4 ferrite nanoparticles strongly depend on Zn concentration and nanoparticle average crystallite size in different Zn concentration regimes.& 2014 Chinese Materials Research Society. Production and hosting by Elsevier B.V. All rights reserved. | K.Nadeem M.Shahid M.Mumtaz | 2014 | Progress in Natural Science:Materials International2014，24，3： | 0 |
| 3 | Femtosecond laser induced nanostructuring of zirconium in liquid confined environment显示文摘The surface, structural, and mechanical properties of zirconium after irradiation with Ti: sapphire laser(800 nm, 30 fs,1 k Hz) have been investigated. The zirconium targets were exposed for a varying number of laser pulses ranging from 500 to 2000 at a fixed fluence of 3.6 J/cm^2 corresponding to an intensity of 1.2×10^(14)W/cm^2 in ambient environments of deionized water and propanol. A scanning electron microscope(SEM) was employed to investigate the surface morphology of the irradiated zirconium. The SEM analysis shows the formation of various kinds of features including nanoscale laser induced periodic surface structures(LIPSS), sponge like surface structure, flakes, conical structures, droplets, pores, and cavities. The energy dispersive x-ray spectroscopy(EDS) analysis exhibits the variation in chemical composition along with an enhanced diffusion of oxygen under both ambient conditions. The crystal structure and phase analyses of the exposed targets were explored by x-ray diffraction(XRD) and Raman spectroscopy techniques, respectively. The XRD analysis confirms the presence of various phases of zirconium hydride and zirconia after ablation in both de-ionized water and propanol. However, excessive hydrides are formed in the case of propanol. The Raman analysis supports the EDS and XRD results. It also reveals the presence of oxides(zirconia) after irradiation in both de-ionized water and propanol environments.The chemical reactivity of zirconium was significantly improved in the presence of liquids which were accountable for the growth of novel phases and modification in the chemical composition of the irradiated Zr. A nanohardness tester was employed to measure the nanohardness of the laser treated targets. The initial increase and then decrease in nanohardness was observed with an increase in the number of laser pulses in the de-ionized water environment. In the case of propanol,a continuous decrease in hardness was observed. | Nisar Ali Shazia Bashir Umm-i-Kalsoom M.Shahid Rafique Narjis Begum Wolfgang Husinsky Ali Ajami Chandra S.R.Natahala | 2017 | Chinese Physics B2017，26，1： | 0 |
| 4 | Floating Solid Particles Interacting with Tilted Square Obstacles in Fluid Affecting Drag Forces显示文摘We have analyzed the kinetics of solid circular particles interacting with fluid,outer boundary and internal square shaped obstacles tilted at a 45°angle.The effects on the motion of particle due to collision with obstacles and wall are inspected.An Eulerian approach is used to study the behavior of particle in the fixed computational mesh.The interactions between fluid,particles and obstacles have been carried out in the whole domain by using fictitious boundary method(FBM).In this work,the particulate flow simulations are computed by using finite element solver FEATFLOW.Numerical results are presented by assigning different alignments to the obstacles and varying their positions in the domain.Particle-wall,particle-particle and particleobstacle collisions are treated by applying a modified collision model proposed by Glowinski et al.The rapid change in drag forces acting on obstacles due to nearby passing particles and its effect on the fluid motion has been investigated. | K.Usman S.Jabeen M.Shahid | 2023 | Advances in Applied Mathematics and Mechanics2023，15，2： | 0 |
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