Inhibitory Response of Raphanus sativus on Lipid Peroxidation in Albino Rats

In the present study, inhibitory effect of the methanol extract of Raphanus sativus root on lipid peroxidation has been carried out in normal rats. Graded doses of methanol extract of root of the plant (40, 80 and 120 mg kg−1 body weight) were administered orally for 15 days to experimental treated rats. Distilled water was administered to experimental control rats. At the end of experiment, rats were killed by decapitation after ether anesthesia. Blood and liver were collected to measure thiobarbituric acid reactive substance, reduced glutathione and activity of catalase. Results indicated that the extract of R. sativus root reduced the levels of thiobarbituric acid reactive substance significantly in all experimental treated groups (P < 0.05) as compared to the experimental control group. It also increased the levels of reduced glutathione and increased the activity of catalase. In vitro experiments with the liver of experimental control and experimental treated rats were also carried out against cumene hydroperoxide induced lipid peroxidation. The extract inhibited in vitro cumene hydroperoxide induced lipid peroxidation. R. sativus inhibits lipid peroxidation in vivo and in vitro. It provides protection by strengthening the antioxidants like glutathione and catalase. Inclusion of this plant in every day diet would be beneficial

On the Calculation of Economic current Density of Aluminium Cell Busbars

The calculation of economic cross section for D.C. busbars, based on the minisation of total costs e.g. cost of conductor and a stream of costs for power losses in the conductor, is quite well known. Certain complications arise in quantifying the cost of conductor and cost of the power lost. In the literature it is customary to express the cost of conductor in terms of an equivalent annual cost

On the Calculation of Economic cross-section for large D.C. busbars

BUSBARS for aluminium reduction cells carry direct current from one cell to another and the passage of current results in power losses due to resistance. Electrical resistance for a given material being propo-rtional directly to length and inversely to area of cross-section, the power losses can be reduced by short-ening the length of busbars and increasing the area of crosssection. The length of busbars is determined by the design of the cell and facility in operation. The crosssection can be increased within practical limits but, for a given length, an increase in the cross- section will involve higher capital expenditure as more material will be used. In short, the initial investment in busbars varies directly with the area of cross-section of the busbars and subsequent operating costs, i.e. power, lost as heat due to resistance, varies inversely as the area of cross-section. The total costs incurred over the operating life of busbars are the initial investment followed by the stream of operating costs and the choice of cross-section should intend to minimise the total costs