Sökning: "per arne karlsson"
Hittade 4 avhandlingar innehållade orden per arne karlsson.
1. Järnbruken och ståndssamhället : institutionell och attitydmässig konflikt under Sveriges tidiga industrialisering 1700-1770
Sammanfattning : The present dissertation treats the problem of the stagnation of the Swedishiron industry during the 18th century. After a long period of expansionduring the 17th century, the parliament forbade a further enlargement ofbar iron production from the mid-18th century. LÄS MER
2. Defining the role of CD47 and SIRPα in murine B cell homeostasis
Sammanfattning : B cell development is a highly organized process, which commences in the fetal liver during embryogenesis and in the bone marrow (BM) after birth. Surface IgM+ immature B cells emigrate from the BM via the blood stream to the spleen and finally differentiate into conventional mature follicular B (FoB) cells and marginal zone (MZ) B cells. LÄS MER
3. Lake bathymetry as driver of salmonid population size structure and biomass
Sammanfattning : Most fish species undergo ontogenetic niche shifts from feeding on pelagic zooplankton, to larger benthic invertebrates and in some cases also to fish. These ontogenetic niche shifts have strong impact on the interactions within and between species, with effects on individual growth, population abundance and food web dynamics. LÄS MER
4. Optical Efficiency of Low-Concentrating Solar Energy Systems with Parabolic Reflectors
Sammanfattning : Solar electricity is a promising energy technology for the future, and by using reflectors for concentrating solar radiation onto photovoltaic cells, the cost per produced kWh can be significantly reduced. The optical efficiency of a concentrating system determines the fraction of the incident energy that is transferred to the cells and depends on the optical properties of the system components. LÄS MER