Munendra Pal Singh

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The temperature dependence of phonon excitations and the presence of spin-phonon coupling in polycrystalline Pr(2)NiMnO(6) samples were studied using micro-Raman spectroscopy and magnetometry. Magnetic properties show a single ferromagnetic-to-paramagnetic transition at 228 K and a saturation magnetization close to 4.95 µ(B)/f.u. Three distinct Raman modes(More)
Magnetic resonance imaging (MRI) is the modality of choice as far as imaging diagnosis of pathologies in the pituitary gland is concerned. Further, the advent of dynamic contrast enhanced (DCE) has enhanced the capability of this modality in detecting minute benign but endocrinologically significant tumors called microadenoma. These lesions are visible with(More)
Dynamic Stochastic Resonance (DSR) utilizes the noise associated with the image itself to enhance the image quality. This paper analyzes the effects of Discrete Wavelet Transform (DWT), Discrete Cosine Transform (DCT) and Singular Value Decomposition (SVD) of image, which works as the input to bi-stable nonlinear system exhibiting DSR. The study performed(More)
3-(1,4-Dioxo-1,4-dihydronaphthalen-2-yl-amino)benzoic acid shows multiple tunable fluorescence emissions depending on solvent, pH and wavelength of excitation. Independent dual fluorescence emissions are observed while exciting compound 3-(1,4-dioxo-1,4-dihydronaphthalen-2-yl-amino)benzoic acid in UV-region or in visible region. In methanol at low(More)
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