Frequency response and bandwidth in low-numerical-aperture step-index plastic optical fibers.

By experimental measurement and from a numerical solution to the time-dependent power flow equation, the frequency response, bandwidth, mode coupling, and mode-dependent attenuation are determined for a low-numerical-aperture (NA) plastic optical fiber. Frequency response and bandwidth are specified as a function of fiber length. Numerical results are verified against experimental measurements.

[The first state-owned pharmacy in Serbia].

The first state-owned pharmacy in Serbia dates back to 1836. At first its title was Dvorska i voena apoteka (Court and Military Pharmacy), which later changed to Pravitelstvena apoteka (Government Pharmacy). The pharmacy moved from Kragujevac to Belgrade on two occasions along with the government seat, to finally settle in Belgrade on 8 december 1841 Pravitelstvena Apoteka fostered the development of the pharmaceutical science in the country and acted as a public healthcare institution.

High-speed and high-sensitivity displacement measurement with phase-locked low-coherence interferometry.

A novel high-speed and high-sensitivity displacement measurement sensing system, based on the phase-locked low-coherence interferometry, is presented. The sensing system is realized by comprising the Michelson fiber-optic interferometer. In order to obtain quadrature signals at the interferometer outputs, a 3×3 fused silica fiber-optic directional coupler is used.

[Theriac: medicine and antidote].

Theriac was an ancient multi-ingredient preparation; originating as a cure for the bites of serpents, mad dogs and wild beasts, it later became an antidote to all known poisons. The name theriac (treacle), (Greek theriake, Latin theriaca, French thériaque) was derived from the Greek for wild beast - theriakos. The first formula was created by Mithridates Vl, King of Pontus, a skillful ruler but a monster of cruelty, who, living in such a fear of being poisoned, took a great interest in toxicology.