Sökning: "physical testing"

Visar resultat 1 - 5 av 423 avhandlingar innehållade orden physical testing.

1. 1. Acoustic modelling and testing of advanced exhaust system components for automotive engines

   Författare :Sabry Allam; Hand Bodén; Antonio Torregrosa; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Theoretical physics; acoustic modelling; testing; two-port; diesel particulate filter; after treatment device; Teoretisk fysik; Physics; Fysik;

   Sammanfattning : The increased use of the diesel engine in the passenger car, truck and bus market is due to high efficiency and lower fuel costs. This growing market share has brought with it several environmental issues for instance soot particle emission. LÄS MER

3. 2. 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

4. 3. Lithium-ion Battery Safety - Assessment by Abuse Testing, Fluoride Gas Emissions and Fire Propagation

   Författare :Carl Fredrik Larsson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fire; thermal runaway; gas emission; gas explosion; propagation; safety; abuse testing; Lithium-ion; cell case explosion; hydrogen fluoride;

   Sammanfattning : Lithium-ion batteries offer high energy and power densities as well as long life time but have a more narrow stability window compared to other battery types and contain reactive and flammable materials. In case of overheating the battery cell can release gas (vent) and, at temperatures of about 150-200 °C, a so called thermal runaway can occur, that is a rapid self-heated temperature increase which is typically accompanied with a large release of smoke and gas, fire and a potential cell case explosion or gas explosion. LÄS MER

5. 4. Physical Training and Testing in Patients with Chronic Obstructive Pulmonary Disease (COPD)

   Författare :Ragnheiður Harpa Arnardóttir; Gunnar Boman; Kjell Larsson; Margareta Emtner; Hans Hedenström; Sven Larsson; Uppsala universitet; []
   Nyckelord :Physical therapy; chronic obstructive pulmonary disease; pulmonary rehabilitation; physical training; endurance training; interval training; health-related quality of life; exercise testing; walking tests; physiotherapy; Sjukgymnastik;

   Sammanfattning : The overall aims of the studies were to investigate the effects of different training modalities on exercise capacity and health-related quality of life (HRQoL) in patients with moderate or severe COPD and, further, to explore two of the physical tests used in pulmonary rehabilitation.In study I, the 12-minute walking distance (12MWD) did not increase on retesting in patients with exercise-induced hypoxemia (EIH) whereas 12MWD increased significantly on retesting in the non-EIH patients. LÄS MER

7. 5. Cross-scale perspectives on heterogeneity in Swedish boreal forests

   Författare :Sofia Eriksson; Monica Hammer; Helle Skånes; Risto Kalliola; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; sustainable forest management; biodiversity conservation; landscape analysis; historical maps; ownership; Physical geography; Naturgeografi; geografi med naturgeografisk inriktning; Geography; Physical Geography;

   Sammanfattning : Maintaining species diversity, ecosystem functioning, and socioeconomic values requires continued ecosystem heterogeneity across scales. This thesis aims to bridge gaps between ecological theory, environmental goals, and practical application of sustainable forest management needed to maintain such heterogeneity. LÄS MER