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Biomedical subjects

N S Rajurkar

Publications and source records attributed to N S Rajurkar.

4 recordsLinked to original sources
PubMed2003

Studies on self and electrolyte diffusion in cesium halides.

The present paper deals with the determination of the self-diffusion coefficients of 134 Cs(+) ions in CsI, CsBr and CsCl over the concentration range of 5 x 10(-6)-0.01 M and of electrolyte diffusion coefficients of CsI, CsBr and CsCl (5 x 10(-5)-0.1M) labelled with 134 Cs(+) in 1% agar gel at 25 degrees C. These diffusion coefficients are compared with those expected from the Onsager-Fouss and Onsager's theory for electrolyte and self-diffusion, respectively. The disparity between the theoretical and experimental diffusion coefficients over the wide range of concentrations is accounted on the basis of various types of interactions occurring in the ion-gel-water system.

Agar↗
PubMed2001

Electrolyte diffusion of cesium bromide in water at 25 degrees C.

Electrolyte diffusion coefficients of CsBr in water have been measured using 137Cs isotope with an open ended capillary technique without stirring. The measurements were done at 25 degrees C over the concentration range of 10(-6) -0.25 M and the measured values are compared with the theoretical values of diffusion coefficients estimated on the basis of Onsager-Fuoss theory. At low concentrations, there is a good agreement between the experimental and theoretical values of diffusion coefficients. The deviations at higher concentrations are explained on the basis of the occurrence of ion-ion interactions.

Journal Article↗
PubMed1998

Mineral content of medicinal plants used in the treatment of diseases resulting from urinary tract disorders.

Elemental composition of some Ayurvedic medicinal plants used for healing urinary tract disorders has been studied by nondestructive neutron activation analysis with a 252Cf source and atomic absorption spectroscopy. In total, 14 elements have been estimated in different plants; among these Cu, Cr, Co and Cd are found to be present at the trace level; Mn, Pb, Zn, Ni, Na, Fe and Hg at minor level and K, Ca and Cl at major level. The differences in the concentration of the elements are attributed to soil composition and the climate in which the plant grows. The importance of some elements in diseases related to renal disorders is also briefly discussed.

Humans↗