Sökning: "progress variable"

Visar resultat 41 - 45 av 59 avhandlingar innehållade orden progress variable.

  1. 41. Function follows Form : Trait-based approaches to climate change effects on wetland vegetation and functioning

    Författare :Helen Moor; Jon Norberg; Andrew Gonzalez; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Functional traits; Plant community ecology; Trait distributions; Wetlands; Ecosystem functioning; Ecosystem Services; Climate change; Dispersal; Metacommunity modelling; naturresurshushållning; Natural Resources Management;

    Sammanfattning : Climate change and habitat fragmentation are altering the structure and functioning of plant communities world-wide. Understanding how, why and with what consequences are major challenges of ecology today. Trait-based approaches focus on functional rather than taxonomic identity to facilitate process-based explanation and prediction. LÄS MER

  3. 42. Nausea and emesis in cancer chemotherapy : aspects of occurrence, assessment and treatment

    Författare :Sussanne Börjeson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Cancer chemotherapy; cancer nursing; nausea; emesis; antiemetics; well-being;

    Sammanfattning : Nausea and emesis are two of the most distressing side-effects cancer patients may experience during chemotherapy. The general aim of this thesis was to acquire knowledge to be used for improving the care of cancer patients during chemotherapy, in particular for the prevention and palliation of chemotherapy-induced nausea and emesis. LÄS MER

  4. 43. Modelling of methane and hydrogen enriched methane flames in industrial gas turbine burners

    Författare :Daniel Moell; Strömningsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The majority of the power production in the world today is based on combustion of coal, oil and natural gas. Most countries have agreed that the amount of CO2 emitted to the atmosphere will have to be decreased to keep the global warming at sustainable levels. LÄS MER

  5. 44. Turbulent premixed flames in a model gas turbine combustor: fuel sensitivity and flame dynamics

    Författare :Francesco Pignatelli; Strömningsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fuel flexibility; Premixed turbulent combustion; DNS; Optical diagnostic;

    Sammanfattning : The demand for energy security and reduction of greenhouse gas emissions has led to a surge of interest in the development of high-efficiency and low-emission gas turbine engines that can run on alternative low carbon content fuels, such as hydrogen-enriched fuel and syngas. However, the combustion characteristics of these fuels can significantly alter the flame characteristics and operability range of existing combustors. LÄS MER

  7. 45. Theoretical and Experimental Studies of the Formation of Ionized Gases in Spark Ignition Engines

    Författare :Raymond Reinmann; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Thermal Ionization; Calorimetry; Interferometry; Spark Ignition Engine; Current and Voltage Measurements; Engine Control.; fluid dynamics; Gases; plasmas; Gaser; plasma; fluiddynamik; Breakdown; Arc; Glow; Flame Ionization; Chemi-Ionization; Spark; Townsend; Fysicumarkivet A:1998:Reinmann;

    Sammanfattning : The processes that govern the formation, existence and consumption of ions in gases have been studied both experimentally and theoretically. The aim of the work is targeted at increasing the understanding of these phenomena in the working gases inside an engine. LÄS MER