Kharkiv is located in the Eastern part of Ukraine in the valley of rivers Kharkiv, Lopan’ and Uda. At the territory of the city these rivers join and flow into river Donets
Truskavets, world’s famous balneal resort, is located in a picturesque valley of East Carpathians’ foothills at a height of 350 m above sea level on distance of 105 km from L’viv. The L’viv airport and the railway station connect it with the biggest cities of Ukraine and the countries of Europe. The population of Truskavets is 26.6 thousand people. 1827 is considered as date of foundation of a health resort.
Ivan Pavlovich Pulyui (Ukrainian: Іва́н Па́влович Пулю́й; German: Johann Puluj) (2 February 1845 – 31 January 1918) was a Ukrainian-born physicist, inventor and patriot who has been championed as an early developer of the use of X-rays for medical imaging. His contributions were largely neglected until the end of the 20th century.