Rajesh Kumar
Articles written in Journal of Chemical Sciences
Volume 102 Issue 5 October 1990 pp 713-720
S Mishra Ravindra Kumar S K Aryal S Kumar Rajesh Kumar M M Bajaj
The application of Fourier transform infrared spectroscopy and laser Raman spectroscopy for obtaining structural information about the subtle changes occurring at the molecular level following leprosy, pulmonary tuberculosis, infected burns, epilepsy and Duchenne muscular dystrophy (DMD) are reported in this paper. It is shown that IR spectra exhibit specific signals for each disease. Results of the observed bands of hemoproteins are compared with those of normals. Raman spectra of IgG reveal that alpha-helical conformations are introduced partially in case of the proliferation of
Volume 121 Issue 4 July 2009 pp 497-502
Rajesh Kumar Yogesh Chandra Joshi
Acylation of 5-(2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-$7H$-pyrazolo [4,3-d) pyrimidin-7-one
Volume 121 Issue 5 September 2009 pp 579-588
We analyse the problem of impedance for a diffusion controlled charge transfer process across an irregular interface. These interfacial irregularities are characterized as two class of random fractals: (i) a statistically isotropic self-affine fractals and (ii) a statistically corrugated self-affine fractals. The information about the realistic fractal surface roughness has been introduced through the bandlimited power-law power spectrum over limited wave numbers. The details of power spectrum of such roughness can be characterized in term of four fractal morphological parameters, viz. fractal dimension ($D_H$), lower ($\ell$), and upper (𝐿) cut-off length scales of fractality, and the proportionality factor (𝜇) of power spectrum. Theoretical results are analysed for the impedance of such rough electrode as well as the effect of statistical symmetries of roughness. Impedance response for irregular interface is simplified through expansion over intermediate frequencies. This intermediate frequency expansion with sufficient number of terms offers a good approximation over all frequency regimes. The Nyquist plots of impedance show the strong dependency mainly on three surface morphological parameters i.e. $D_H$, $\ell$ and 𝜇. We can say that our theoretical results also provide an alternative explanation for the exponent in intermediate frequency power-law form.
Volume 127 Issue 3 March 2015 pp 439-445 Regular Articles
Ramakrishna V S Nirogi Rajesh Kumar Badange Kiran Kumar Kandukuri Mukkanti Khagga
In continuation to our efforts to develop better treatment options for cognitive decline, we have been focussing on 5-HT6 receptor (5-HT6R) antagonists, which are known to be involved in improving cognitive function in numerous animal models. In this paper, we report a novel series of [3-[(1-Methylpiperidin-4-yl) methyl] arylsulfonyl]-1
Volume 134, 2022
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