Sökning: "AT 500"
Visar resultat 16 - 20 av 691 avhandlingar innehållade orden AT 500.
16. Water chemistry and runoff in forest streams at Kloten
Sammanfattning : Natural variability of stream water composition and discharge was studied in the Kloten area, Central Sweden, by means of statistical methods and simulation technique. The effects of Urea (155 kgN ha-1) and ammonium nitrate (AN, 160 kgN ha-1) fertilization and clear-cutting were studied by comparing treated and reference streams before and after management. LÄS MER
17. Evolution of Microstructure in Two Austenitic Alloys at High Temperatures
Sammanfattning : A niobium stabilised AISI 347 austenitic stainless steel was investigated after static ageing and creep deformation at temperatures between 500°C and 800°C for times up to 88 000 h. Coarse and fine NbX precipitates and also s-phase precipitates were formed in the temperature range 500-700°C. LÄS MER
18. Copula-based Portfolio Optimization
Sammanfattning : This thesis studies and develops copula-based portfolio optimization. The overall purpose is to clarify the effects of copula modeling for portfolio allocation andsuggest novel approaches for copula-based optimization. The thesis is a compilation of five papers. LÄS MER
19. The Bronze Age metalwork in southern Sweden : aspects of social and spatial organization 1800-500 B.C
Sammanfattning : The present work highlights the Bronze Age metalwork in Southern Sweden, deposited c. 1800-500 B.C., found as single finds or in burials and hoards. LÄS MER
20. En kåhltäppa eij at räkna : köksväxtodlingen i 1700-talets jordbrukssystem
Sammanfattning : Bönders köksväxtodling är en del av 1700-talets svenska jordbrukssystem som inte har studerats i någon större utsträckning. Det råder därför en osäkerhet kring flera grundläggande frågor, som hur vanligt det var att bönder odlade köksväxter vid den här tiden, hur stora odlingslanden var, var de var belägna, vad som odlades, hur odlingen gick till och vilken inställningen var till odlingen under samtiden. LÄS MER