4, 10- Dinitro-2, 6, 8, 12- tetraoxa-4, 10- diazaisowurtzitane (TEX) is well known as an efficient Insensitive high explosive. It was usually prepared via nitration of 1, 4- diformyl- 2, 3, 5, 6- tetrahydroxy piperazine reaction using a mixture of fuming nitricacid and concentrated sulfuric acid. However, these traditional liquid acids are toxic, corrosive and produce hazardous waste. In additi...

Background & Aims: This study was done in hem dialysis patients who referred to Imam Khomeini hospital of Urmia for insertion of arterial -venous fistula with Gore-tex, in whom there was not possibility of natural fistula. Objectives were assessment and comparison of complications and patency of arterial-venous fistulas was done with 6 and 8 mm Gore-tex graft in the upper limb and comparison of...