The separation of n-pentane, n-hexaneandn-heptane mixture with the dividingwallcolumn(DWC) was simulatedwithcommercialsoftwareHYSYS, and the optimized operationregion was obtained.
Twenty-nine of the 48 UNESCO Member States n the Asia-Pacific region have submitted national reports on the situation and development of youth and adult education.
In January 1991, Kokang warlord Peng Jia-sheng assured visiting U.N. officials of plans to end heroin production in Special Region No. 1 within one year and eradicate opium cultivation within seven.
U.N. peacekeepers are scheduled to take command of the region from a 7, 000-member African Union force by Dec. 31, but the bulk of the units are not expected to arrive until 2008.