Sökning: "Sources of Variation"
Visar resultat 16 - 20 av 298 avhandlingar innehållade orden Sources of Variation.
16. Microalgae : future bioresource of the sea?
Sammanfattning : Unicellular microalgae are a renewable bioresource that can meet the challenge forfood and energy in a growing world population. Using sunlight, CO2, nutrients,and water, algal cells produce biomass in the form of sugars, proteins and oils, allof which carry commercial value as food, feed and bioenergy. LÄS MER
17. Stress of conscience and burnout in healthcare : the danger of deadening one's conscience
Sammanfattning : The overall purpose of this thesis is to investigate whether there is an association between “stress of conscience” — that is, stress related to a troubled conscience — and burnout, and to obtain an enhanced understanding of factors related to stress of conscience and burnout in healthcare. Of the four “studies” included, one uses qualitative research methods and the others use quantitative research methods. LÄS MER
18. Learning history in an enquiry and source-based practice : What do students need to learn in relation to second-order concepts to be able to handle historical sources?
Sammanfattning : In this thesis, results from three studies and a reanalysis have been combined to provide knowledge of what students need to learn in relation to the second-order concepts of evidence, historical empathy and causation, for them to be able to handle historical sources and construct accounts. Data has been collected in two intervention studies conducted in collaboration with a group of upper secondary teachers. LÄS MER
19. Polybrominated diphenylethers in the environment - Local and long range transport
Sammanfattning : I have studied the sources, long range transport, and rates of flow of polybrominated diphenyl ethers (PBDEs), from the technosphere to the Baltic ecosystems. PBDEs are mainly used in polymers, which are applied in electrical equipment to prevent overheating or flashover and are produced in large quantities. LÄS MER
20. Sources of preanalytical error in primary health care : implications for patient safety
Sammanfattning : Background Venous blood tests constitute an important part in the diagnosis and treatment of patients. However, test results are often viewed as objective values rather than the end result of a complex process. This has clinical importance since most errors arise before the sample reaches the laboratory. LÄS MER