A Beta molecular sieve having multi-level channels, and synthesizing method thereof; the molecular sieve has a second-level mesoporous structure, and uses polyquaternium-6, polyquaternium-7, polyquate...
3/22/07,CHAMPAIGN, Ill. — The 100th anniversary of the founding of the University of Illinois chapter of Phi Beta Kappa will be marked during a two-day visit in April of a Phi Beta Kappa visiting scho...