Avancerad sökning

Visar resultat 1 - 5 av 22 avhandlingar som matchar ovanstående sökkriterier.

1. 1. The importance of body mass index and weight-change in patients with coronary artery disease

   Författare :Linn Kennedy; Malmö Institutionen för kliniska vetenskaper; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicine human and vertebrates ; Cardiovascular system; Medicin människa och djur ; Kardiovaskulära systemet; prognosis; coronary artery disease; body mass index;

   Sammanfattning : High body mass index (BMI) is associated with cardiovascular risk factors such as hypertension, dyslipidemia, and insulin resistance. Obesity is also an independent risk factor for coronary artery disease (CAD) and can cause structural as well as functional changes in the heart. High BMI is associated with increased mortality in the population. LÄS MER

3. 2. Childhood bereavement, stress resilience, and cancer risk : an integrated register-based approach

   Författare :Beatrice Kennedy; Katja Fall; Fang Fang; Unnur Valdimarsdottír; Scott Montgomery; Meena Kumari; Örebro universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; alcohol; bereavement; cancer; drug use; epidemiology; health behaviour; psychological resilience; smoking; stress;

   Sammanfattning : Accumulating evidence suggests that psychosocial stress and susceptibility to stressful exposures – stress resilience – influence the risk of various health outcomes, but the potential link with cancer occurrence is unclear. The aims of this thesis were to test if loss of a close relative, a marker of severe psychological stress, and stress resilience measured during late adolescence are associated with cancer risk later in life, as well as to explore potential underlying mechanisms. LÄS MER

4. 3. Mixed-Grained Till in Pavement Structures; A Field and Laboratory Study

   Författare :Helene Kennedy; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; permanent deformation behaviour; triaxial test; pavement; till;

   Sammanfattning : The road network in Sweden has historically been constructed using rock fill and natural gravel. More than 75 per cent of the land surface of Sweden is covered by glacial till and greater utilization of site-won material will not only reduce transportation costs but will also promote better sustainability of natural assets. LÄS MER

5. 4. Magnetic Fields and Induced Power in the Induction Heating of Aluminium Billets

   Författare :Mark William Kennedy; Ragnhild E. Aune; Andreas Westermoen; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Induction; heating; billets; coils; magnetic fields;

   Sammanfattning : Induction heating is a common industrial process used for the reheating of billets before extrusion or forging. In this work the influence of the coil and work piece geometry, the effect of the electrical properties of the work piece, and the coil current and frequency, on the magnetic flux density and resulting work piece heating rates were studied. LÄS MER

7. 5. Complexity and Power Reduction in Digital Delta-Sigma Modulators

   Författare :Nadeem Afzal; Jacob Wikner; Oscar Gustafsson; Mark Vesterbacka; Michael Peter Kennedy; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : A number of state-of-the-art low power consuming digital delta-sigma modulator (ΔΣ) architectures for digital-to-analog converters (DAC) are presented in this thesis. In an oversampling ΔΣ DAC, the primary job of the modulator is to reduce the word length of the digital control signal to the DAC and spectrally shape the resulting quantization noise. LÄS MER