Osmo Ikolan kokoelma

Osmo Ikola (s. 1918) on ollut Turun yliopiston suomen ja sen sukukielten professorina 1950–62, suomen kielen professorina 1962–81 ja yliopiston rehtorina 1975–81. Hän on tutkinut kirjasuomea ja lauseoppia. Osmo Ikola lahjoitti fennistiikkaa ja fennougristiikkaa sekä niiden lähialoja käsittävän kirjastonsa Turun yliopiston kirjastolle keväällä 1996. Kirjakokoelma säilytetään erillisenä kokoelmana suomen kielen laitoksella. Kokoelma on kokonaisuudessaan luetteloitu Volter-tietokantaan

Arkistoluettelo 748: Osmo Lindeman

Luettelo Kansalliskirjastossa olevan Osmo Lindemanin arkiston sisällöstä

Diffusion of Interstitial Solutes in Nb-46wt% Ti Alloys Measured by Mechanical Spectroscopy

The mechanical properties of metals with a body-centered cubic (bcc) structure, such as Nb, Ta, V, and their alloys, are modified with the introduction of interstitial impurities, such as O, N, C, or H. These metals can dissolve great amounts of O and N, for example, to form solid solutions. The interstitial solute atoms (ISA) in metals with a bcc structure occupy octahedral sites and cause local distortion with tetragonal symmetry. So ISA in these metals forms an elastic dipole that can align along one of the three cubic axis of the crystal. In the present paper, the torsion pendulum technique was employed for the investigation of various interactions among the metallic matrix and different interstitial solutes in the Nb-46wt%Ti alloy. From the relaxation spectra, we obtained the diffusion coefficients, pre-exponential factors, and activation energies for nitrogen in the Nb-46wt%Ti alloy.

Anelastic Relaxation Measurements in Nb-46wt%Ti Alloys with Interstitial Solutes in Solid Solution

Anelastic relaxation measurements were performed in a Nb-46wt%Ti alloy, in the temperature range of 300 to 700 K, using a torsion pendulum operating at an oscillating frequency near 2.0 Hz. The samples were measured in different conditions: cold worked, annealed in ultra-high vacuum and doped with several quantities of nitrogen. The relaxation spectra obtained were resolved into their component peaks, corresponding to the different kinds of interaction of the interstitial solutes with the metallic matrix. The relaxation parameters of each process were calculated using Debye's elementary peaks.

The Influence of Solutes on the Enthalpy/Entropy Change of the Actinomycin D Binding to DNA: Hydration, Energy Compensation and Long-Range Deformation on DNA

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)