This paper describes a detailed study of the spectral homogeneity of human platelets using Surface-enhanced Raman spectroscopy (SERS). We used a combined approach based on multivariate methods as principal component analysis and pair correlation algorithms to investigate platelets spectral properties. The correlation coefficients for each sample have been calculated, and the average coefficient of determination has been estimated. The high degree of spectral homogeneity inside one probe and between them has been revealed. The prospects of obtained results usage for pathologies based on platelet conformations during cardiovascular diseases have been demonstrated.

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The article deals with the problem of provision with personal property of rural settlers in the Kaliningrad region after World War II. A significant role in the material well-being of workers of collective and state farms was played by subsidiary farms. Basing on materials included in the database of immigrants to the new Russian region, the presence of cows, calves, goats, sheep, pigs, poultry, forage, food and household items in the immigrant families is analyzed for the year 1946. Well-being of households arriving in the region from different regions is compared according to each type of possessings. Taking into account the places of exit, the resettlement families are divided into further groups: low-income, medium-income, and high-income households with livestock and belongings. Property disproportions are explained by the consequences of the Great Patriotic War and the specifics of the places of exit. The study of migrants’ interviews made it possible to determine the composition of the items included in the “household possessions” category. In the difficult first post-war year, not all the villagers who came to domesticate the Kaliningrad region were provided with cattle, furniture and utensils, food stock. There was not enough roughage for domestic animals. However, half or more of the migrating families had cows, sheep, goats and poultry in their private farms, which was one of the factors that helped them to survive the post-war famine.

The post-war settlement of part of the territory of the former East Prussia is one of the most important events in the history of the newly formed region, which was reflected in a key way at all stages of its formation as part of the RSFSR. The scale of the migration process makes it one of the largest organized by the Soviet government. In the article, based on the statistical analysis of the database currently being filled in, "Echelon lists of migrants to the Kaliningrad region. 1946-1947" and studies of the texts of memoirs of the first settlers collected in the 1980s and 90s, the sex and age composition of the first and most numerous migration wave is characterized. It was found that mainly families of 4-6 people were resettled, headed by a 40-year-old man. At the same time, there were 1.6 times more women among those over the age of 18. Two thirds of the arrivals were minors, the average age of which is 10 years. Despite the fact that the memories of the resettlement participants were recorded at a much later time, they are consistent with the statistical estimates obtained. The results of the work partially fill in the information that has been missing so far about the exact composition of the Kaliningrad migration, which, as can be seen, is significantly younger, and therefore more balanced in terms of sex ratio than the population of other regions of the Soviet Union.

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