Sökning: "abundance"
Visar resultat 11 - 15 av 970 avhandlingar innehållade ordet abundance.
11. Chemical Abundance Analysis of Population II Stars : The Summary Includes a Background in General Astronomy
Sammanfattning : We are made of stardust in the sense that most atomic nuclei around us have been formed by stars. Stars synthesise new elements and expel them to the interstellar medium, from which later new generations of stars are born. We can map this chemical evolution by analysing the atmospheric contents of old Galactic halo stars. LÄS MER
12. Computing abundance constraints in Saccharomyces cerevisiae’s metabolism
Sammanfattning : The unicellular eukaryotic organism Saccharomyces cerevisiae (budding yeast) is routinely used for production of high-value chemical compounds in the biotechnology industry. To improve production yields, it is fundamental to understand cellular metabolism, i.e. all biochemical reactions that occur inside the cell. LÄS MER
13. Effects of landscape patterns on small mammal abundance
Sammanfattning : Several studies indicate a long-term decline in the numbers of voles in northern Fennoscandia. Altered land use and forest management practices have been proposed as possible causes of the decline. LÄS MER
14. Seagrasses and their epiphytes : Characterization of abundance and productivity in tropical seagrass beds
Sammanfattning : Seagrass beds cover large intertidal and subtidal areas in coastal zones around the world and they are subjected to a wide variety of anthropogenic influences, such as nutrient enrichment due to sewage seepage. This study was undertaken to address specific questions focusing on whether near shore tropical seagrasses that receive a constant influx of groundwater nutrient inputs, would exhibit a higher productivity and to what extent epiphytic algae reflect the impacts of nutrient inputs. LÄS MER
15. Applications of spectroscopic abundance analysis to late-type stars
Sammanfattning : .... LÄS MER
