An efficient and mild methodology for rapid and efficient synthesis of isatin Schiff bases was described under microwave irradiation and solvent free condition.aromatic or heterocyclic Primary amines and isatin could be selectively reacted under microwave irradiation into the corresponding isatin Schiff bases in high yields and short reaction time.  

abstract L-bases and B-bases are two important classes of polynomial bases used for representing surfaces in CAGD. The B ezier and multinomial bases are special cases of both L-bases and B-bases. We establish that certain proper subclasses of bivariate Lagrange and Newton bases are L-bases and certain proper subclasses of power and Newton dual bases are B-bases. A geometric point-line duality b...

St!!!SAME is being developed to provide an easy access to the content of relational data bases to users without a specific computer training. Queries me typed in natural language either freely or with a guided mode. The system dynamically proposes through menus the different words and phrases that c;~n make up a query. Users are able to exploit the results of their queries with standard electro...

We report on results of computational studies of the interaction of slow electrons with the purine and pyrimidine bases of DNA, as well as with their associated nucleosides and nucleotides. The calculations focus on characterisation of the π∗ resonances associated with the bases and also provide general information on the scattering of slow electrons by these targets. High-level studies of the ...