31. Palestinian Authority crack-downs on Hamas as part of the accords have led to internal friction among Palestinians. 32. However, officials discounted that as a possibility given the internal friction of last year . ( rw) 33. This is hysteresis, or molecular-based internal friction . 34. Practically speaking, in all natural process, some of the work is dissipated by internal friction or viscosity. 35. The research emphases of the institute are Nuclear engineering, special metallic materials, and internal friction of solid. 36. Physicists have known since the 1930s that liquid helium can flow forever without losing heat to internal friction . 37. "It's been known that there is some internal friction , and this ( Waigel's announcement ) aggravates the situation," 38. However, during the American leg of the tour, internal friction started to form between the members of the trio. 39. This provided a chance for the Mamluks to seize power, but internal friction prevented them from exploiting this opportunity. 40. Russian officials on Monday reported clashes between rival Chechen rebel groups, who they claim are weakened by internal friction .
