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Visar resultat 1 - 5 av 86 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Firefighters' physical work capacity

   Författare :Ann-Sofie Lindberg; Christer Malm; Juha Oksa; Desiree Gavhed; Peter Krustrup; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Physical demands; performance; work capacity; aerobic fitness; anaerobic fitness; muscle strength; muscle endurance; balance; ergonomics; physical testing; SIMCA;

   Sammanfattning : The overall aim of this thesis was to identify valid, simple, and inexpensive physical tests that can be used for evaluation of firefighters’ physical work capacity. Paper I included fulltime- and part-time firefighters (n = 193), aged 20-60 years. LÄS MER

3. 2. A Source-Based Test-Bed for Fast-Neutron Irradiation

   Författare :Julius Scherzinger; Kärnfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : The "3He crisis" has resulted in a major effort worldwide to develop replacement neutron-detector technologies. Such technologies are in their infancy and need to be thoroughly tested before becoming mainstream. Neutron sources for controlled irradiation include accelerators, nuclear reactors and radioactive sources. LÄS MER

4. 3. Hållbar polisrekrytering : Teoretiska, metodologiska och praktiska perspektiv på rekrytering och urval

   Författare :Stefan Annell; Magnus Sverke; Petra Lindfors; Kristina Westerberg; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; sustainable recruitment; selection; police; general and crystallized intelligence; bifactor models; personality inventory; physical test; interviews; psychosocial working conditions; performance; job satisfaction; work related attitudes; health; hållbar rekrytering; urval; polis; generell begåvning; kristalliserad begåvning; bifaktormodeller; personlighetstest; fysiska test; intervjuer; arbetsmiljöfaktorer; prestation; arbetstillfredsställelse; arbetsrelaterade attityder; hälsa; Psychology; psykologi;

   Sammanfattning : Organisationer behöver kvalificerad personal för att fungera effektivt och därmed blir rekrytering en viktig aktivitet. Det är också angeläget att ny personal anpassar sig väl till arbetsförhållandena. LÄS MER

5. 4. Study of the Superconducting Medium Beta Cavity of the European Spallation Source

   Författare :Saeid Pirani; Partikel- och kärnfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SRF elliptical cavity; higher order mode; Qext; field emission; elliptical cavity design; vertical test; Fysicumarkivet A:2020:Pirani;

   Sammanfattning : The thesis explains the design, fabrication, vertical test, higher order mode (HOM) and field emission study of the ESS superconducting medium beta (MB) cavity. The ESS MB cavity is a 6-cell elliptical cavity. The main criteria for a multicell elliptical cavity design are explained. The multicell elliptical cavity fabrication process is discussed. LÄS MER

7. 5. Neutron Irradiation Techniques

   Författare :Julius Scherzinger; Kärnfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; actinide Be; fast-neutrons; NE-213 liquid scintillator; He-4 scintillators; pulse-shape discrimination; Cf-252; absolute detection efficiency; neutron irradiation; Fysicumarkivet A:2016:Scherzinger;

   Sammanfattning : The He-3 “crisis” has become a fact in the last decade and large scale neutron detectors based on He-3 technologies have become unaffordable. This new He-3 reality has resulted in a major effort worldwide to develop replacement neutron-detector technologies. LÄS MER