Sökning: "duty to contribute"

Visar resultat 11 - 15 av 41 avhandlingar innehållade orden duty to contribute.

  1. 11. Physiological recovery from night-call duty - a field study of physicians

    Författare :Birgitta Malmberg; Avdelningen för arbets- och miljömedicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; HRV; Acitwatch; night-call; anaesthesiologist; sleep; working time;

    Sammanfattning : Abstract Physicians’ work on night-call entails long and stressful working hours with high demands and disrupted sleep. Incomplete recovery is considered to be the most important link between acute physiological stress reactions, shift work and chronic health effects. LÄS MER

  3. 12. Experimental Investigations of Combustion Chamber Heat Transfer in a Light-Duty Diesel Engine

    Författare :Jessica Dahlström; Förbränningsmotorer; []
    Nyckelord :internal combustion engines; heat transfer; diesel engine; Diesel combustion; combustion chamber geometry; piston geometry; spray parameters;

    Sammanfattning : This work concerned experimental studies of heat transfer in a light-duty diesel engine. Combustion is affected by several parameters, such as pressure, engine speed, mass of injected fuel and in-cylinder gas flow. These parameters are in turn affected by the combustion chamber geometry and fuel spray characteristics. LÄS MER

  4. 13. Energy Efficiency in Winter Road Maintenance - A Road Climatological Perspective

    Författare :Lina Nordin; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Road climate; RWIS; frost; snow; fuel consumption; heavy-duty vehicles; route optimisation programme; energy efficiency; winter road maintenance;

    Sammanfattning : Practices in winter road maintenance are dependent on the climate and weather impacting roads and the road users’ requirements. As in many other fields of transportation, it is of interest to investigate fuel efficiency potentials in the different aspects of the road maintenance area. LÄS MER

  5. 14. Biobank Research : Individual Rights and Public Benefit

    Författare :Joanna Stjernschantz Forsberg; Stefan Eriksson; Mats G. Hansson; Angus Dawson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biobank; Ethics; Consent; Returning results; Individual rights; Public good; Medicinsk vetenskap; Medical Science;

    Sammanfattning : The aim of this thesis is to investigate the relationship between individuals and society in the context of healthcare and medical research, more specifically concerning the rights and duties of individuals in regard to biobank-based research. My starting point is that we all have a strong vested interest in improved healthcare, and therefore the possibilities to conduct important research should be optimized. LÄS MER

  7. 15. On Alternative Fuels for Internal Combustion Engines : A study of biodiesel, gaseous methane and methanol

    Författare :Ludvig Adlercreutz; Andreas Cronhjort; Ola Stenlåås; Magnus Sjöberg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gaseous methane combustion; spark ignition; single cylinder research engine; particle number; particle emissions; oil ash content; CO2; Green House Gases; engine testing; engine development; emissions; combustion chamber design; injector fouling; environmental impact; road transportation; Machine Design; Maskinkonstruktion;

    Sammanfattning :  This thesis covers some of the environmental impacts of internalcombustion engines running on alternative fuels. The focus of thestudies conveyed is the reduction of greenhouse gases and particleemissions, as these two factors are of great importance for the pathsthat road transportation is facing. LÄS MER