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| 1 | Melatonergic drugs for therapeutic use in insomnia and sleep disturbances of mood disorders 显示文摘 | Srinivasan V Zakaria R Othaman Z | 2012 | CNS Neurol Disord Drug Targets2012，11，2： | 1 |
| 2 | Effects of Mg substitution on the structural and magnetic properties of Co0.5Ni(0.5-x)MgxFe2O4 nanoparticle ferrites显示文摘In this study, nanocrystalline Co–Ni–Mg ferrite powders with composition Co0.5Ni0.5-xMgxFe2O4 are successfully synthesized by the co-precipitation method. A systematic investigation on the structural, morphological and magnetic properties of un-doped and Mg-doped Co–Ni ferrite nanoparticles is carried out. The prepared samples are characterized using x-ray diffraction(XRD) analysis, Fourier transform infrared spectroscopy(FTIR), field emission scanning electron microscopy(FESEM), and vibrating sample magnetometry(VSM). The XRD analyses of the synthesized samples confirm the formation of single-phase cubic spinel structures with crystallite sizes in a range of 32 nm to 36 nm. The lattice constant increases with increasing Mg content. FESEM images show that the synthesized samples are homogeneous with a uniformly distributed grain. The results of IR spectroscopy analysis indicate the formation of functional groups of spinel ferrite in the co-precipitation process. By increasing Mg2+substitution, room temperature magnetic measurement shows that maximum magnetization and coercivity increase from 57.35 emu/g to 61.49 emu/g and 603.26 Oe to 684.11 Oe(1 Oe = 79.5775 A·m-1), respectively. The higher values of magnetization Ms and Mr suggest that the optimum composition is Co0.5Ni0.4Mg0.1Fe2O4 that can be applied to high-density recording media and microwave devices. | R M Rosnan Z Othaman R Hussin Ali A Ati Alireza Samavati Shadab Dabagh samad Zare | 2016 | Chinese Physics B2016，25，4： | 1 |
| 3 | Melatonergic drugs for therapeutic use in insomnia and sleep disturbances of mood disorders 显示文摘 | Sfinivasan V Zakaria R Othaman Z | 2012 | C NS Neurology Disorder Drug Targets2012，11，2： | 1 |
| 4 | Spectral features and antibacterial properties of Cu-doped ZnO nanoparticles prepared by sol-gel method显示文摘Zn_(1-x)Cu_x O(x=0.00, 0.01, 0.03, and 0.05) nanoparticles are synthesized via the sol-gel technique using gelatin and nitrate precursors. The impact of copper concentration on the structural, optical, and antibacterial properties of these nanoparticles is demonstrated. Powder x-ray diffraction investigations have illustrated the organized Cu doping into ZnO nanoparticles up to Cu concentration of 5%(x = 0.05). However, the peak corresponding to CuO for x= 0.01 is not distinguishable. The images of field emission scanning electron microscopy demonstrate the existence of a nearly spherical shape with a size in the range of 30–52 nm. Doping Cu creates the Cu–O–Zn on the surface and results in a decrease in the crystallite size. Photoluminescence and absorption spectra display that doping Cu causes an increment in the energy band gap. The antibacterial activities of the nanoparticles are examined against Escherichia coli(Gram negative bacteria)cultures using optical density at 600 nm and a comparison of the size of inhibition zone diameter. It is found that both pure and doped ZnO nanoparticles indicate appropriate antibacterial activity which rises with Cu doping. | Alireza Samavati A F Ismail Hadi Nur Z Othaman M K Mustafa | 2016 | Chinese Physics B2016，25，7： | 0 |
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