1 You have signs of infection, such as: 2  Increased pain, swelling, warmth, or redness around the bite. 3  Red streaks leading from the bite. 4  Pus draining from the bite.  A fever.
A negative index of refraction due to three-dimensional chirality is demonstrated for abilayered metamaterial based on pairs of mutually twisted planar metal patterns in parallel planes, which alsoshows negative electric and magnetic responses and exceptionally strong optical activity and circular dichro-ism.
Results and discussion. The refractive indices n of benzene, toluene, o-xylene, m-xylene, and p-xylene have been measured at around 288.15, 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15 K. In Table 1 we give our rough data for n at each temperature, T, for the five fixed wavelengths.