N V Desai | PubMed Health

PubMed1997

Basic care reduces neonatal hyperbilirubinaemia.

We studied the frequency of jaundice, bilirubin estimations, phototherapy administration and exchange transfusions performed at 5 year intervals (1981, 1986 and 1991) among babies admitted to special care unit and those managed in postnatal ward, showing a decline which was significant except for the number of exchange transfusions performed. The number of term babies with serum bilirubin > 15 mg/dl and preterm babies with serum bilirubin > 10 mg/dl also declined significantly without prophylactic phototherapy or pharmacotherapy.

Exchange Transfusion, Whole Blood↗

PubMed1992

Ultrafiltration membranes for the separation of catalyst and products in homogeneous catalysis systems.

Results of preliminary studies on concentration by ultrafiltration and reuse of a Ru(III)EDTA complex in homogeneous catalysis are reported. A method of preparation and selection of conditions of making cellulose acetate membranes for concentrating Ru(III)EDTA is described. At an operating pressure of 75 psig (517 kPa), the above catalyst can be concentrated to seven to eight times its initial concentration. The membrane used exhibits a separation of about 97.5% for the complex with a permeate flow rate of about 3-6 gallons per sq. ft per day. The catalyst activities were determined for two reactions, viz. hydroformylation of 1-hexene and carbonylation of ammonia for five cycles of concentration followed by reuse. The experimental data indicated that the catalyst concentration by ultrafiltration for subsequent reuse is simple and attractive and can provide potentially energy saving alternative to the cumbersome conventional separation processes associated with the recovery of catalysts in homogeneous catalysis.

Biotechnology↗