Wladimir S. Woytinsky and Public Works in Saint Petersburg in 1906–1908: To the Problem of Studying the National Experience of Fight Unemployment

The article is devoted to as relevant as ever today the problem of unemployment and explores a little-known national experience of solving problems of employment in St. Petersburg in the early XX century associated with activity of the famous social Democrat and economist W. S. Woytinsky. The reaction of the government and society to the problem of unemployment is studied. There are noted the first experience of registering the unemployed in the history of Russia, and there are shown the unique nature of the first Public Works for the unemployed in Russia and the  largest in Europe at that time, organized jointly by the workers ' organization — the St. Petersburg Council of the Unemployed — and the St. Petersburg City Duma. There are noted negative impact of unemployment on the general situation in the capital during the First Russian revolution, as well as on the condition of the personality of factory worker. The research perspective of the problems raised in the article is outlined

Application of NMR spectroscopy in predicting hydrogel matrix stability by “stress” testing method

The results of the study of hydrogel matrix stability by means of nuclear magnetic resonance spectroscopy are described in the article. Ionizing radiation effect on auxiliary substances and active ingredients of hydrogel polymeric matrixes have been studied. It has been proved that under the influence of high-velocity electrons at absorbed doses 25–35 kGy the formation of a three-dimensional polymeric structure of the matrix occurs. It has been ascertained that active ingredients of hydrogels miramistin and gentamycin are stable under absorbed radiation doses in the range 5–35 kGy