OBJECTIVES To study the background and the working and socio-economic conditions, and the prevalence of some sexually transmitted diseases (STDs), among street and sex club female Latvian prostitutes. STUDY DESIGN Structured in-depth interviews, as well as clinical examination and laboratory tests for gonorrhea, syphilis, bacterial vaginosis, trichomoniasis, ectoparasites and HIV-infections. ...

A method and technical tools for correction of range-bias caused by variation of photo-multiplier (PM) output pulses in amplitude and shape are considered. The method is based on preliminary estimation of a relationship between certain integral parameter of PM pulses and corresponding range-bias. This integral parameter is measured for each PM pulse in parallel with measurement of basic time in...

geometrically nonlinear governing equations for a plate with linear viscoelastic material are derived. the material model is of boltzmann superposi¬tion principle type. a third-order displacement field is used to model the shear deformation effects. for the solution of the nonlinear governing equations the dynamic relaxation (dr) iterative method together with the finite difference discretizati...