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Devi, Veena
- Overview on Universal Human Right
Authors
1 College of Pharmacy, Malther, Mandi-175008 (H.P.), IN
Source
International Journal of Reviews and Research in Social Sciences, Vol 2, No 1 (2014), Pagination: 24-26Abstract
In this review we present the theoretical background of human rights. Human Rights are the moral rights of highest order. The idea of human rights is one of the most pervasive features of our political reality. The concept is in vogue and perhaps all the modern nation-states have tried to formulate their own institutional rights, which may not or may relate to human rights. Environmental protection is first ascertained as a universal concern which warrants consideration within a human rights context. The author recalls the foundation on which is grounded the concept of human rights, namely the human dignity, irrespective of culture, race, religion or gender. Finally, in concluding remarks, the paper considers the actual trend of recognizing human rights norms and condemning their abuses.- Weight Loss Corrosion Studies of Al6061 / Quartz Metal Matrix Composites in Sea Water
Authors
Source
International Journal of Innovative Research and Development, Vol 3, No 4 (2014), Pagination:Abstract
This paper deals with the corrosion characterization of Al6061- quartz particulate metal matrix composites (MMCs). Al6061 alloy is used as matrix. Commercially available alloy is used. Quartz is the wastage obtained after the removal of aluminium from its ore and contains silica, alumina, titanium dioxide and ferric oxide. Being ceramic material quartz remains inert and is hardly affected by the corrosion medium. Quartz particles of size 50-80 microns are used as reinforcement. Experiments were conducted to determine the corrosion rate of the samples in sea water procured from Arabian Sea in malpe, Udupi District, Karnataka. MMC's are prepared according to ASTM standards by liquid melt metallurgy technique using vortex method. Composites containing 2, 4, 6% by weight of Quartz and unreinforced matrix were tested using Arabian sea water at room temperature. Specimens are taken in the form of 20mm x 20mm cylinders. They were exposed to sea water for different intervals of time. Corrosion rates of all samples were calculated using the formula 534W/DAT mpy. The results were computerised and simulation curves were obtained. The composite was found to be more corrosive resistant than matrix alloy. In each test the corrosion resistance of both alloy composites was found to decrease with the exposure time. The decrease in the corrosion rates of composites when compared to that of matrix alloy is due to the physical barrier created by Quartz particles.