Sökning: "long-term-maintenance"

Visar resultat 6 - 10 av 22 avhandlingar innehållade ordet long-term-maintenance.

1. 6. Viruses on the wing : evolution and dynamics of influenza A virus in the Mallard reservoir

   Författare :Michelle Wille; Jonas Waldenström; Timm Harder; Linnéuniversitetet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Co-infections; Ecology; Epidemiology; Evolution; Host-Parasite Interactions; Immunity; Influenza A Virus; Mallard; Phylogeny; Virology; Waterfowl; Wild Birds; Wildlife Disease; Zoonotisk ekologi; Zoonotic Ecology;

   Sammanfattning : This thesis explores the evolution of avian influenza A viruses (IAV), as well as host-pathogen interactions between these viruses and their main reservoir host, the Mallard (Anas platyrhynchos). IAV is a genetically diverse, multi-host virus and wild birds, particularly dabbling ducks, are the natural reservoir. LÄS MER

3. 7. Cost optimization of maintenance scheduling for wind turbines with aging components

   Författare :Quanjiang Yu; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Integer linear optimization; Age-based preventive maintenance scheduling; Renewal-reward theorem; Weibull distribution; Combinatorial optimization; Wind turbine maintenance; Virtual replacement; Condition monitoring data; Cox proportional hazards method; Linear programming;

   Sammanfattning : A major part of the wind turbine operation cost is resulted from the maintenance of its components. This thesis deals with the theory, algorithms, and applications concerning minimization of the maintenance cost of wind power turbines, using mathematical modelling to find the optimal schedules of preventive maintenance activities for multi-component systems. LÄS MER

4. 8. Self-management of Persistent Neck Pain : A Multi-component Group Intervention in Primary Health Care

   Författare :Catharina Gustavsson; Eva Denison; Lena von Koch; Per Lindberg; Christina Opava; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; coping; neck pain; physiotherapy; predictors; randomized controlled trial; self-assessment questionnaire; self-management; MEDICINE; MEDICIN; Physiotherapy; Sjukgymnastik fysioterapi; Medicinsk vetenskap; Medical Science;

   Sammanfattning : The overall aim of this thesis was to evaluate effects of a multi-component pain and stress self-management group intervention (PASS) and to explore plausible predictors associated with short-term and long-term treatment effects among patients with persistent tension-type neck pain in primary health care (PHC). Study I was a pilot study in order to explore feasibility of the study design and methods. LÄS MER

5. 9. A National Swedish Methadone Program 1966-1989

   Författare :Leif Grönbladh; Lars Gunne; Ulf Rydberg; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Psychiatry; heroin addiction; methadone maintenance treatment; rehabilitation; mortality; criminality and prostitution; retention; HIV-protection; treatment strategy; Psykiatri; Psychiatry; Psykiatri;

   Sammanfattning : Methadone Maintenance treatment of compulsive opioid addiction was started by the study of Dole and Nyswander (1965) and has subsequently been replicated in programs throughout the world. Methadone treatment has become the most effective modality for the treatment of chronic heroin addiction. LÄS MER

7. 10. High accuracy low-cost NDIR sensing

   Författare :Bakhram Gaynullin; Göran Thungström; Henrik Rödjegård; Christine Hummelgård; Claes Mattsson; David Bastviken; Mittuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NDIR; pressure calibration and compensation; resolution limits; carbon dioxide; methane; spectroscopy;

   Sammanfattning : Sensing gas concentrations using optical absorption offers valuable advantages over other methods ina wide variety of real-world applications from industrial processes to environmental change. One of the most rapidly developing detection techniques on the global market is the non-dispersive infrared method (NDIR). LÄS MER