Immunological cross-reactivity has been shown between related genera of the family Treponemataceae. Extracts of Borrelia cross-react with antibodies in syphilitic serum (Saurino and De Lamater, 1952) and produce positive skin tests in the later stages of syphilis (Ranque, Quilici, and Assadourian, 1967). The fluorescent treponemal antibody absorption test (FTA-ABS) is at present considered to b...

The mechanism for efficient and coherent angular momentum transport remains one of the unsolved puzzles in astrophysics despite the enormous efforts that have been made. We suggest that important new insight could be gained in this problem through an experimental and theoretical study of a laboratory device (Ranque-Hilsch tube) that displays a similar enhanced angular momentum transfer which ca...

a brass vortex tube (vt) with interchangeable parts is used to determine the optimum cold end orifice diameter, main tube length and diameter. experiments were carried out to study the effects of operating pressure as well. it is shown that there is an optimum value for cold end orifice diameter, which is equal to 4mm and there is an optimum value for cold and hot exit temperature difference at...