Sökning: "fracture"

Visar resultat 16 - 20 av 1020 avhandlingar innehållade ordet fracture.

1. 16. Crack growth and development of fracture zones in plain concrete and similar materials

   Författare :Per-Erik Petersson; Avdelningen för Byggnadsmaterial; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tensile strength; finite element method; test methods; fracture energy; fracture mechanics; concrete; cracking; finita element; brottmekanik; beräkningsmetoder; oarmerad betong; sprickutbredning; sprickor; betong; fracture zone; tensile stress-strain curve;

   Sammanfattning : [abstract missing].... LÄS MER

3. 17. Diseases in the hip - Exploring risk for fracture and osteoarhritis

   Författare :Cecilie Hongslo Vala; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Hip fracture; Femoral neck fracture; Trochanteric fracture; Osteoporosis; Osteoarthritis; Total hip replacement; Total knee replacement; Farmers; Homogamy; Assortative mating; Bereavement;

   Sammanfattning : Objective: Hip fracture is the most serious condition linked to low bone mass or osteoporosis, and Sweden has one of the highest incidences in the world. The proportion of elderly is increasing in the Swedish population and in the world, and with increased age comes increased incidence for both fragility fracture and osteoarthritis. LÄS MER

4. 18. On dental ceramics and their fracture : a laboratory and numerical study

   Författare :Wen Kou; Göran Sjögren; Tore Dérand; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Dental ceramics; Finite element analysis; Fixed partial denture; Fracture; Numerical modeling; Surface treatment; Biomaterials; Biomaterial; odontologi; Odontology;

   Sammanfattning : Background Surface treatments and irregularities in the surfaces may affect the fracture of ceramics. The effects of various treatments on the surface texture of different types of ceramic cores/substructures was therefore qualitatively, quantitatively and numerically evaluated. LÄS MER

5. 19. Microstructural aspects of the ductile-to-brittle transition in pressure vessel steels

   Författare :Torbjörn Narström; KTH; []
   Nyckelord :dectile-to-brittele transition; cleavage fracture; ductile fracture; fracture mechanics; constraint; initiation; pressure vessel steel; cleavage fracture stress;

   Sammanfattning : .... LÄS MER

7. 20. The acute osteoporotic vertebral compression fracture. Its natural course and characteristics

   Författare :Nobuyuki Suzuki; Göteborgs universitet; []
   Nyckelord :Vertebral body fracture; Osteoporosis; Pain; Quality of life; Disability; Compression fracture; Prognosis; Treatment; Prevalent fracture; Epidemiology;

   Sammanfattning : Aim: The overall aim of this thesis was to investigate the natural course and the characteristics of the acute osteoporotic vertebral compression fracture in order to better understand and improve treatment for this type of fracture. Patients and methods: Eligible patients were all patients over 40 years of age who sought medical care at the emergency unit at Sahlgrenska University Hospital (studies I-III) or referred to the X-ray Department at Capio Diagnostic Center (study IV) because of back pain with a radiographically-confirmed acute vertebral body fracture which resulted from a low energy trauma. LÄS MER