Sökning: "Capture cross section"

Visar resultat 21 - 25 av 29 avhandlingar innehållade orden Capture cross section.

1. 21. Atom Probe Tomography of Hydrogen and of Grain Boundaries in Corroded Zircaloy-2

   Författare :Gustav Sundell; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; corrosion; Field adsorption.; Hydrogen pick-up; Hydrogen analysis; Zirconium alloys; Atom probe tomography;

   Sammanfattning : Due to their low thermal neutron capture cross-section, zirconium alloys are widely used in the nuclear industry for fuel cladding and structural components. The lifetime of the fuel assemblies in the reactors are largely dictated by the ability of the fuel cladding to withstand corrosion and mechanical damage. LÄS MER

3. 22. Molecular and Spatial Profiling of Prostate Tumors

   Författare :Emelie Berglund; Joakim Lundeberg; Päivi Östling; KTH; []
   Nyckelord :Bioteknologi; Biotechnology;

   Sammanfattning : Every cancer tumor is unique, with characteristics that change over time. The evolution of a full-blown malignancy from a single cell that gives rise to a heterogeneous population of cancer cells is a complex process. LÄS MER

4. 23. Microstructure of Zirconium Alloys Oxidized in Steam

   Författare :Pia Tejland; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; EDX; ADF; TEM; Zircaloy-2; FIB-SEM; STEM; GD-OES; SPP; SEM; Zirconium; HAADF;

   Sammanfattning : Zirconium alloys are widely used in nuclear reactors as fuel cladding tubes because of their low thermal neutron capture cross-section, good corrosion properties and satisfactory mechanical properties. However, the main limiting factor of these materials is the oxidation behavior. LÄS MER

5. 24. Essays on Social Distance, Institutions, and Economic Growth

   Författare :Gustav Hansson; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; institutions; rule of law; government effectiveness; development; colonial origin; country size; Montesquieu; nationalism; nation-building; ethnic diversity; protectionism; non-nested tests; modeling selection; economic growth; productivity; equipment investment; investment prices.;

   Sammanfattning : Paper 1: Country Size and the Rule of Law: Resuscitating Montesquieu In this paper, we demonstrate that there is a robust negative relationship between the size of country territory and a measure of the rule of law for a large cross-section of countries. We outline a theoretical framework featuring two main reasons for this regularity; firstly that institutional quality often has the character of a local public good that is imperfectly spread across space from the core of the country to the hinterland, and secondly that a large territory usually is accompanied by valuable rents and a lack of openness that both tend to distort property rights institutions. LÄS MER

7. 25. Modelling flow with free and rough surfaces in the vicinity of hydropower plants

   Författare :Anders G. Andersson; Nils Rüther; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

   Sammanfattning : Flow with free and rough surfaces near hydropower stations is of interest for both engineering and environmental applications. Here, Computational Fluid Dynamics simulations of free surface flow and flow over rough surfaces in regulated rivers were performed in applications such fish migration, spillway design and flow over rough surfaces as in hydropower tunnels or natural channels. LÄS MER