Mukesh Mahajan

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[reaction: see text] Ab initio and density functional studies (DFT) on cycloaddition reactions of 1,3-diazabuta-1,3-dienes with ketenes are reported. The vinylic (C=C) and the carbonyl (C=O) units of the ketenes are found to participate in concerted asynchronous [4 + 2] cycloaddition reactions. The transition states (3t, 4t, and 7t) for these paths have(More)
Static light scattering and electric field-induced Kerr measurements were performed above the nematic-isotropic phase transition of a terminal-lateral-lateral-terminal negative Poisson ratio trimer. For both measurements the inverse susceptibility was observed to be nearly linear with temperature, a result inconsistent with our previously reported Kerr data(More)
We have used atomistic molecular-dynamics simulations to model the detailed molecular configuration of 5CB (4-n-pentyl-4'-cyanobiphenyl) molecules in the form of a nanoscopic liquid crystal droplet in a vacuum microgravity environment. We find the equilibrium state of droplets consisting of as few as 26 or 50 molecules to exhibit significant nematic(More)
Objective: The aim of the current study was to study the minimum duration of yoga training required to induce favorable changes in pulmonary functions in normal healthy sedentary adults. Background: Effect of Yoga training on Pulmonary Function Tests (PFTs) is well established. It is matter of interest at what point beneficial effects of Yoga starts.(More)
Three simple, precise and economical UV spectrophotometric methods have been developed for the estimation of Zolpidem tartrate in bulk and tablet formulations. Zolpidem tartrate has absorbance maxima at 293 nm in zero order spectrum method (Method A ) First order derivative spectra of drug, showed λ maxima = 305 nm and λ minima = 280 nm and amplitude(More)
A novel, simple and economic reverse phase high performance liquid chromatography (RP-HPLC) method has been developed for the estimation of zolpidem tartrate in bulk and tablet dosage form with greater precision and accuracy. Separation was achieved on C18 column (250X4.6mm i.d.,5μm) in isocratic mode using methanol and acetonitrile in the ratio 50:50 (v/v)(More)
Cytochrome b 5 (cytb 5) is a membrane protein vital for the regulation of cytochrome P450 (cytP450) metabolism and is capable of electron transfer to many redox partners. Here, using cyt c as a surrogate for cytP450, we report the effect of membrane on the interaction between full-length cytb 5 and cyt c for the first time. As shown through stopped-flow(More)
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