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Sol-gel prepared nanoparticles of pure alpha alumina with 0.5, 1.0, 1.5, 2.0, and 2.5 wt% content were used in the synthesis of Al-6061 alloy based metal matrix composite via powder metallurgy route. After synthesis, corrosion investigation of the synthesized composite samples were carried out in 3.5% NaCl solution using electrochemical polarization and impedance analysis. A total of 0.5-1 wt% nanoalumina reinforced composite has shown an excellent corrosion resistance of more than an order of magnitude higher as compared to the sintered base alloy. However, a substantial decrease in corrosion resistances of synthesized composite were found after reinforcement of >1.0 wt% nanoalumina and corrosion becomes worse than the sintered base alloy of 2.5 wt% nanoalumina incorporated composite sample. Microstructural examination and relative density measurements of the synthesized composites indicated that increase of porosities and accumulation of nanoparticles in the grain boundary regions conjointly increase the corrosion reaction after exceeding 1.0 wt% nanoalumina reinforcement content. [ABSTRACT FROM AUTHOR]

Introduction: The topic of euthanasia has induced differences not only among professionals in the medical fraternity but also in other fields as well. The dying process is being lengthened by the new state of art technologies erupting as such higher pace, and it is at the expense of standard quality of life and of a gracious death. Aim: To study the awareness and attitude toward euthanasia among select professionals in Delhi. Methodology: It was a questionnaire-based descriptive cross-sectional study. The study population included doctors, nurses, judges, lawyers, journalist, and social activists of Delhi. Tool included a sociodemographic questionnaire, two questions to know awareness regarding euthanasia and a modified euthanasia attitude scale used to measure attitude toward euthanasia. Data were analyzed using Stata 11.2. Results: Through our study, it is evident that professionals who participated in the study (judges, advocates, doctors, nurses, journalists, and social activists) in Delhi were familiar with the term euthanasia. No significant difference was seen in the attitude of professionals of different age group and sex toward euthanasia. Conclusion: Through this study, it is found that judiciary group most strongly endorsed euthanasia. The attitude of doctors was elicited from mixed group with doctors belonging to different specialties. Oncologists are not in favor of any form of euthanasia. However, doctors from other specialties did support euthanasia. [ABSTRACT FROM AUTHOR]