Abstract: A method and a system are provided for preventing unauthorized access to financial accounts. A financial services system creates and stores a global external number corresponding to a funding account number that is associated with a financial account. A vendor system requests the corresponding global external number from the financial services system, which returns the corresponding global external number. The vendor system stores the global external number with customer identification information and/or transaction records. The vendor system requests payments for transactions by supplying the global external number stored in a transaction record to the financial services system. The financial services system authenticates the vendor system, and returns the corresponding funding account number. The vendor system generates a transaction settlement request using the funding account number.

Abstract: A method and a system are provided for preventing unauthorized access to financial accounts. A financial services system creates and stores a global external number corresponding to a funding account number that is associated with a financial account. A vendor system requests the corresponding global external number from the financial services system, which returns the corresponding global external number. The vendor system stores the global external number with customer identification information and/or transaction records. The vendor system requests payments for transactions by supplying the global external number stored in a transaction record to the financial services system. The financial services system authenticates the vendor system, and returns the corresponding funding account number. The vendor system generates a transaction settlement request using the funding account number.

Abstract: Synthetic, organic, polymeric membranes were prepared from polyethylenimine for use with pervaporation apparatus in the separation of ethanol-water mixtures. The polymeric material was prepared in dilute aqueous solution and coated onto a polysulfone support film, from which excess polymeric material was subsequently removed. Cross-links were then generated by limited exposure to toluene-2,4-diisocyanate solution, after which the prepared membrane was heat-cured. The resulting membrane structures showed high selectivity in permeating ethanol or water over a wide range of feed concentrations.