Zur Gerbstoffbestimmung, ein Vorschlag

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Essenzen

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Optische Untersuchungen über das Flüssigkeit-Dampfgleichgewicht in kapillaren Systemen

Ohne ZusammenfassungAuszug aus der holländischen Dissertation (Utrecht 1938).Herrn Prof. Dr. H. R. Kruyt möchte ich für sein freundliches Interesse an dieser Arbeit aufrichtig danken.     

Zur Theorie der algebraischen Functionen einer Veränderlichen und der Abel'schen Integrale

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Zinn und Antimon in Legierungen

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A New Family of Cyclic Difference Sets with Singer Parameters in Characteristic Three

We construct a new family of cyclic difference sets with parameters ((3 ^d – 1)/2, (3 ^{d – 1} – 1)/2, (3 ^{d – 2} – 1)/2) for each odd d. The difference sets are constructed with certain maps that form Jacobi sums. These new difference sets are similar to Maschietti's hyperoval difference sets, of the Segre type, in characteristic two. We conclude by calculating the 3-ranks of the new difference sets.     

Kreiszylindrische Behälter auf nachgiebiger Unterlage

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Characteristics of radionuclide contamination of different zones of Semipalatinsk Nuclear Test Site “Opytnoe pole”

Data on the spatial distribution of radionuclides (²⁴¹Am, ²³⁹Pu, ¹³⁷Cs and ¹⁵²Eu) formed during nuclear explosions of different types near P2 SNTS test site are presented. Radionuclide contamination induced by the explosions varies in the concentrations of individual radionuclides, their proportions and species. Examination of the variations is a crucial task to plan remediation activities as well as those aimed at decrease of radiation risk for population and prevention of repeated contamination. Concentrations of ²⁴¹Am and ^239+240Pu that are the most toxic radionuclides in the area lie in hundred thousands of Bqkg^?1. The most contaminated areas are classified by the radionuclide concentration, ratio and form present in soil.