Wassermann and Ficker (1922) succeeded in isolating seven virulent strains of Treponema pallidum from the serum from eighty to ninety primary chancres. One strain, B:,, was kept and cultivated in an anaerobic fluid medium consisting of diluted horse serum to which a piece of boiled liver was added, and at that time, the strain proved virulent for rabbits after a series of subcultures (Reiter). ...

Health and education expenditures are among the sources of human capital accumulation. It is claimed that health make a positive contribution to economic growth process through In this study, development in Turkey period 1988-2019 its impact on emphasized. context, effects life expectancy at birth (LEB) (HE) (GDP) were analyzed with ARDL co-integration test. was concluded there relationship bet...

In [13] Prüß investigated a very general nonlinear age-structured model consisting of n species. He proved the principle of linearized stability, which means that the asymptotic behavior of stationary solutions of the nonlinear system is determined by the spectrum of the linearized operator. In other words the stability is determined by the roots of a complex valued characteristic function as i...

Most German philosophers in the early nineteenth century were devoted, to the idealistic « completion » of Immanuel Kant's critical philosophy. A few independent philosophers, however , were preoccupied with the elaboration of a non-idealistic, and less speculative, conclusion to Kant's thought. Among the earliest opponents of the speculativ~ idealists was Jakob Frie-d~ich Fries (1773-1843), a ...

In the year 1665 Sigismund Elsholtz first attempted intravenous anaesthesia by injecting a solution of opiate to obtain insensibility. It was not until 1872, that Ore, Myer and Witzel experimented with chloral hydrate on animals, but this method was not continued. The real work on intravenous anaesthesia started about I905 when Fedorow, St. Petersburg, reported his results on 530 cases in which...