http://localhost:80/xmlui/handle/123456789/19263 2026-04-05T21:21:26Z http://localhost:80/xmlui/handle/123456789/19593 Title: Review on the Technology for the Production of Activated Carbons Authors: TANZIL H. USMANI; M. TM-HR MOTAN; A.H.K. YOUSUFZAI Abstract: The term activated carbon in its broadest sense includes a wide range of carbon-based materials prepared to exhibit a high degree of porosity and an extended interparticulate surface area. These are obtained by combustion, partial combustion, and thermal decomposition of various carbonaceous substances of cellulosic, mineral and polymeric nature. Activated carbon may be in powdered, granular or fibrous forms. The granular form is characterized by large internal surface and small pores, whereas the finely divided powdered form is associated with larger pore diameters but a smaller internal surface. Fibrous activated carbons Ire particularly outstanding in their physico-mechanical properties and high chemical resistance. In this article, successive stages of technology development, of activated carbons in powdered, granular and fibrous forms from precursors of different origin, have been thoroughly reviewed. 2000-03-15T00:00:00Z http://localhost:80/xmlui/handle/123456789/19592 Title: Nutrients Availability of Rawash from Balochistan Authors: FOUZIA S. REHMANI; FARZANA RAFI 2000-03-17T00:00:00Z http://localhost:80/xmlui/handle/123456789/19591 Title: NEW CATALYST FOR INTRAMOLECULAR CYCLOPROPANATION REACTION Authors: A.YASMIN; R.JAFRI; A.MALIK Abstract: The catalytic activity of N,N-ethylenebis (salicylideneaminato) copper (II) during intramolecular cyclopropanation of unsaturated α-diazo-β-ketoester has been studied. The resulting bicyclic intermediate is the precursor of A ring synthon of vitamin D. 2000-03-16T00:00:00Z http://localhost:80/xmlui/handle/123456789/19590 Title: Stocksiol: A new metabolite from Stocksia brahuica Authors: VIQAR UDDIN AHMAD; ZULFIQAR ALI; MUHAM:MAD SHAIQ ALI; MUHAMMAD ZAHID; RASOOL BAKHSH TAREEN 2000-03-14T00:00:00Z