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R. Thankappan,T.V. Nguyen,S.V. Srinivasan,S Vigneswaran,J. Kandasamy,P. Loganathan 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
The optimum conditions for the removal of leather tanning agent syntan from aqueous solution byFenton oxidation at 22 8C for an initial syntan concentration of 500 mg/L were pH 3, and concentrationsof H2O2 and FeSO4 of 300 mg/L and 500 mg/L, respectively. Fenton oxidation followed by granularactivated carbon (GAC) adsorption in fixed-bed column resulted in more than 95% removal of dissolvedorganic carbon, compared to 55–70% removal by Fenton oxidation alone and GAC adsorption alone. Theremoval of individual organic fractions was also higher for the combined treatment compared to theFenton oxidation alone.
Pattern of Tobacco Use and its Correlates among Older Adults in India
Mini, G.K.,Sarma, P.S.,Thankappan, K.R. Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.15
Purpose: We examined tobacco use pattern and its correlates among older adults. Materials and Methods: We used data of 9,852 older adults (${\geq}60$ years) (men 47% mean age 68 years) collected by the United Nations Population Fund on Ageing from seven Indian states. Logistic regression analysis was used to assess the correlates of tobacco use. Results: Current use of any form of tobacco was reported by 27.8% (men 37.9%, women 18.8%); 9.2% reported only smoking tobacco, 16.9% smokeless tobacco only and 1.7% used both forms. Alcohol users (OR:5.20, 95% CI:4.06-6.66), men (OR:2.92, CI :2.71-3.47), those reporting lower income (OR:2.74, CI:2.16-3.46), rural residents (OR 1.34, CI 1.17-1.54) and lower castes (OR:1.29, CI:1.13-1.47) were more likely to use any form of tobacco compared to their counterparts. Conclusions: Tobacco cessation interventions are warranted in this population focusing on alcohol users, men, those from lower income, rural residents and those belonging to a lower caste.