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H. S. Sharma ¹, K. C. Goyal ¹, U. K. Misra ¹

Affiliations
1 Department of Biochemistry, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi - 110007, IN

Abstract

Vitamin A deficiency and protein energy malnutrition are serious nutritional disorders among socio-economically poor children in the world, excess intake of vitamin A has been indicated to afford some protection to the organism against adverse effects of unbalanced protein intake. The excessive intake of vitamin A has earlier been shown to alter the tissue lipid metabolism. These relationships between vitamin A and lipid metabolism led us to study the effect of single massive dose of vitamin A on phosphoric content and the incorporation of NaH₃³²P0₄ into phosphoric content of lungs of rats in relation to the proteins consumed.

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S. P. Mongia ¹, H. S. Sharma ¹, C. R. Vyas ¹

Affiliations
1 Department of Physiology and Biochemistry, R. N. T. Medical College, Udaipur, Rajasthan, IN

Abstract

It has been reported by Folin that the daily excretion of creatinine is fairly constant at different ages, which can serve as an index of endogenous protein metabolism and is independent of dietary protein intake while these views were opposed by Fisher and Karambelkar et al Nakagawa et al have reported that wide variation occurred in total urinary creatinine excretion per day in animal kept on different dietary protein intake.

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Deependra Kumar Sharma ¹, Ashish Bansal ¹, Rakshit Ameta ², H. S. Sharma ³

Affiliations
1 Department of Chemistry, Govt. College Kota (Raj.), IN
2 Department of Chemistry, Pacific College of Basic & Applied Sciences, PAHER University, Udaipur - 313001 (Raj.), IN
3 Department of Chemistry, Govt. College, Bundi (Raj.), IN

Abstract

Bi₂O₃ and Bi₂S₃ catalyzed photocatalytic degradation of methylene blue dye has been investigated. The effect of various parameters, such as the pH, concentration of dyes, effect of amount of semiconductor and effect of light intensity etc. were observed and discussed. The progress of the photochemical oxidation was monitored spectrophotometrically. The optimum reaction conditions were experimentally determined. The photochemical oxidation of dyes follows pseudo - first kinetics. The final products of degradation were characterized and a tentative mechanism was proposed for the photochemical oxidation of dyes.

Keywords

Bismuth Oxide, Bismuth Sulphide, Methylene Blue, Photocatalysts.

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Deependra Kumar Sharma ¹, Ashish Bansal ², Rakshit Ameta ³, H. S. Sharma ⁴

Affiliations
1 Department of Chemistry, Savita Devi Jaiswal Memorial College, Shamgarh -458883(M.P.), IN
2 CC Plant, DCM, Kota (Raj.), IN
3 Department of Pure & Applied Chemistry, University of Kota, Kota - 324005 (Raj.), IS
4 Department of Chemistry, Govt. College, Bundi (Raj.), IN

Abstract

Photocatalysis has been predicted as a promising technology for waste water treatment. Bismuth oxide has been used as effective photocatalyst for carrying out number of chemical reactions. The photocatalytic bleaching of malachite green was carried out in the presence of semiconducting Bismuth oxide and the progress of the reaction was observed spectrophotometrically. The effects of various operating variables like pH, concentration of dyes, amount of semiconductor and light intensity on the rate of bleaching of the dye was observed. A tentative mechanism has been proposed for the photocatalytic bleaching of dye.

Keywords

Photocatalytic Bleaching, Semiconductor, Bismuth Oxide, Malachite Green.

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