Purcell-enhanced x-ray scintillation.

Scintillation materials convert high-energy radiation to optical light through a complex multistage process. The last stage of the process is spontaneous light emission, which usually governs and limits the scintillator emission rate and light yield. For decades, scintillator research focused on developing faster-emitting materials or external photonic coatings for improving light yields.

[Atherosclerosis in diabetes mellitus (repeated epidemiologic studies of atherosclerosis with an interval of 25 years)].

Repeated epidemiological studies of atherosclerosis were performed in 1985-1989 (as compared to 1965-1968) in 20-59-year-old males of malme, praha, Tallinn, Yalta and in 40-59-year-old females in Malme, Riga and Yalta. 358 cases of diabetes mellitus (DM) were studied. DM occurred more frequently during the second interval as compared to the first one: 6.

[Evolution of aortic atherosclerosis in specific European cities in the the 60's and 80's].

Repeated study of atherosclerosis epidemiology is performed in 5 European cities (Malme, Prague, Riga, Tallinn, Yalta) according to WHO recommendations 20 years after a similar study in the same regions. More frequent and more pronounced development of atherosclerosis in males of 20-39 years of age is found in the present study in 3 big cities (Prague, Riga, Tallinn) as compared to the population of small cities Malme and Yalta. The rejuvenation of atherosclerosis can not be explained by an ecological situation as in females atherosclerosis was most pronounced in Malme.

[Changes in the course of atherosclerosis occurring over a 25-year period in the male population of 9 cities of the CIS and Baltic countries].

The trends in atherosclerosis presentation were followed up pathomorphologically in a two-stage epidemiological survey performed in 9 cities of CIC and Baltic states at 25-year interval. The investigations were conducted in accordance with WHO program. Stage 1 (1963-1968) covered 6121 cases, stage 2 (1985-1989) included 9201 cases.