North Eastern Hill University

About: North Eastern Hill University is a education organization based out in Shillong, Meghalaya, India. It is known for research contribution in the topics: Population & Catalysis. The organization has 2318 authors who have published 4476 publications receiving 48894 citations.

Modulation of the clastogenic activity of gamma-irradiation in buthionine sulphoximine-mediated glutathione depleted mammalian cells.

Abstract: enzyme c-glutamylcysteine synthetase and increases Purpose: Chromosome aberrations (CA) were used as an end- cellular radiosensitivity. GSH is an important factor point to investigate the eU ect of buthionine sulphoximine (BSO), in the radiosensitization of hypoxic cells and it has a potent glutathione-depleting agent, on the radiosensitivity of been described as a chemical repair agent in mammamammalian cells. The aim was to obtain information about the lian cells (Midander 1982, Clark et al. 1984, Revesz role of glutathione (GSH) in physicochemical and biochemical processes in irradiated cells.

Simultaneous determination of trace heavy metals in waters by atomic absorption spectrometry after preconcentration by solvent extraction

Abstract: A simple and rapid method for the simultaneous extraction of heavy metals using a new reagent 5-(2′-carbomethoxyphenyl; azo-8-quinolinol(R) into methyl isobutyl. ketone (MIBK) and their subsequent determination by flame atomic absorption spectrometry is described. The method has been applied to the determination of Cu. Pb, Ni, Fe, Cr, Co and Mo in drinking and bore well waters. The extraction has been carried out with an aqueous to organic phase ratio to achieve around 30 fold preconcentration of metals. Extraction parameters and the influence of diverse ions have been studied. The detection limits (36) for Cu, Pb, Ni, Fe, Cr, Co and Mo are 0.07, 0.23, 0.15, 0.09, 0.22, 0.17, 0.38 μg/l, respectively. Higher preconcentration factors can be achieved by using a higher aqueous to organic phase ratio and lower concentration of metals can be determined.

Sparticle spectrum and constraints in anomaly mediated supersymmetry breaking models

Abstract: We study in detail the particle spectrum in anomaly mediated supersymmetry breaking models in which supersymmetry breaking terms are induced by the super-Weyl anomaly. We investigate the minimal anomaly mediated supersymmetry breaking models, gaugino assisted supersymmetry breaking models, as well as models with additional residual nondecoupling D-term contributions due to an extra U(1) gauge symmetry at a high energy scale. We derive sum rules for the sparticle masses in these models which can help in differentiating between them. We also obtain the sparticle spectrum numerically, and compare and contrast the results so obtained for the different types of anomaly mediated supersymmetry breaking models.