A simplified ATP method for the rapid control of cell viability in a freeze-dried BCG vaccine.

We propose a simple and cost-effective ATP method for controlling the specific activity of a freeze-dried BCG vaccine. A freeze-dried BCG vaccine is reconstituted with 1ml saline and incubated for 15min at room temperature and then for 1h at 37°C. The vaccine is then treated with apyrase to remove extracellular ATP.

[Effectiveness of Vitaprost Plus in the treatment of patients with chronic bacterial prostatitis].

The need for use of antimicrobial drugs in the treatment of patients with chronic bacterial prostatitis is indisputable. Given the variety of pathogenic mechanisms of chronic prostatitis, drug Vitaprost Plus in the form of rectal suppositories is of particular interest; it combines antibacterial activity with a positive effect on the various links in the pathogenesis of this disease. The evaluation of the efficacy and safety of drugs Vitaprost Plus and Lomflox was performed.

Temperature-dependent gain and noise in fiber Raman amplifiers.

An experimental investigation of the temperature dependence of the gain and noise performance of a silica-fiber Raman amplifier is described. A decrease in the Raman scattering cross section in a fiber amplifier cooled from a temperature of 300 K to 77 K was measured and found to be in agreement with theoretical values. No difference between the Raman gain coefficients at these two temperatures was observed.

Supercontinuum self-Q-switched ytterbium fiber laser.

We have discovered a new mechanism for passive Q switching of fiber lasers. 10-kW peak power pulses with ~2-ns pulse widths are reported from a diode-pumped ytterbium-doped fiber laser. The laser generates a high-brightness Raman-dominated supercontinuum spectrum covering the complete window of transparency of silica fiber in the infrared from 1.

Direct continuous-wave measurement of n(2) in various types of telecommunication fiber at 1.55 microm.

A method for measuring the nonlinear refractive index of optical fibers with an error of less than 5% is demonstrated. The technique is based on measuring the nonlinear phase shift experienced by a dual-frequency beat signal, permitting a simple, highly sensitive, accurate, repeatable, and easily automated measurement procedure and sampling. Measurements of the nonlinear coefficient in standard telecommunication, dispersion-shifted, and a number of dispersion-compensated fibers are presented.