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Goyal, Shikha
- Impact of Soya Based Health Food on Climacteric Symptoms of Perimenopausal Women
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Authors
Affiliations
1 Department of Food Science and Nutrition, College of Rural Home Science, University of Agricultural Sciences, Dharwad, Karnataka - 580005, IN
1 Department of Food Science and Nutrition, College of Rural Home Science, University of Agricultural Sciences, Dharwad, Karnataka - 580005, IN
Source
The Indian Journal of Nutrition and Dietetics, Vol 46, No 5 (2009), Pagination: 204-217Abstract
Perimenopause is the time around menopause during which menstrual cycle and endocrine changes are occurring but 12 months of amenorrhea has not yet occurred. At this stage the amount and number of days of flow decreases, skipping one or more months during several years before complete cessation.- Intensification of the Chemical Degradation of Reactive Red 141 in the Presence of Ultrasound and Rare Earths [Lanthanum and Praseodymium]
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Authors
Pankaj
1,
Shikha Goyal
1
Affiliations
1 Department of Chemistry, Dayalbagh Educational Institute, Agra-282005, IN
1 Department of Chemistry, Dayalbagh Educational Institute, Agra-282005, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 34, No 4 (2012), Pagination: 76-81Abstract
Degradation of an azo dye, Reactive Red 141 (C52H26C12N14Na8O26S8) in the aqueous solution has been carried out with ultrasound (US) and in combination with rare earth ions (La3+ and Pr3+). Both horn and tank type of sonicating devices, operating at 20 kHz and 250 W, were used for the degradation. A comparative study of continuous and pulsed mode of ultrasound induction has also been undertaken. Operational parameter, such as, initial dye concentration, pH and the presence of rare earth ions on the degradation of dye have been found to affect the degradation process . The degradation rate increased with increasing rare earth concentration, decreasing pH and initial dye concentration. The kinetic data fitted well with pseudo-first order kinetic model. The rate constant for the degradation process with US+RE was three times compared to US alone. The efficiency of various processes for the degradation of RR 141 dye was found to be in the order: US+La>US+Pr>US.Keywords
Degradation, Ultrasound, RR 141, Rare Earth Ions, Kinetics.- Role of Ceric Ion (Ce4+) in the Sonosorption of Acid Red 114, Reactive Blue 21 and Basic Violet 16 Dyes on TiO2
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Authors
Affiliations
1 Department of Chemistry, Dayalbagh Educational Institute, Agra-282005, U.P., IN
1 Department of Chemistry, Dayalbagh Educational Institute, Agra-282005, U.P., IN