Sökning: "lead"

Visar resultat 21 - 25 av 5757 avhandlingar innehållade ordet lead.

  1. 21. Design studies of ELECTRA : European Lead-Cooled Training Reactor

    Författare :Erdenechimeg Suvdantsetseg; Janne Wallenius; Paolo Vinai; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SRA - Energy; SRA - Energi;

    Sammanfattning : A fast neutron research reactor with heavy metal coolant is of interest for Generation IV reactor system develop- ers. In this thesis, the European Lead-Cooled Training Reactor (ELECTRA), which is a low-power lead-cooled fast reactor intended for training purposes, is analyzed. The main aim of the design is that the total nominal power of 0. LÄS MER

  3. 22. The Use of GIS in Assessing Exposure to Airborne Pollutants

    Författare :Emilie Stroh; Avdelningen för arbets- och miljömedicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NOx; air pollution; GIS; Exposure assessment; Lead; NO2;

    Sammanfattning : GIS (Geographical Information System) has become a valuable tool in air pollution exposure assessment studies due to its abilities to accurately model and estimate exposure for large populations and areas. The general aim of the work presented in this thesis was to investigate the factors that affect the validity and precision in the assessment of human exposure to airborne pollution using GIS. LÄS MER

  4. 23. Adjuncts to the Conventional 12-Lead ECG: Assessment of High-Frequency QRS Components and Additional Leads

    Författare :Elin Trägårdh; Lund Klinisk fysiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; heart disease; Physiology; Fysiologi; Cardiovascular system; Kardiovaskulära systemet; myocardial infarction; 16-lead ECG; electrocardiogram; 24-lead ECG; HF-QRS;

    Sammanfattning : The standard 12-lead electrocardiogram (ECG) is one of the most commonly used methods for diagnosing heart disease. Standard ECG is not always optimal, however, and new ECG methods can provide additional information. Analysis of high-frequency QRS components (HF-QRS) has been shown to increase the diagnostic performance of the ECG. LÄS MER

  5. 24. Removal of metals from contaminated waters : Evaluating the use of synthetic adsorbents and green algae biomass

    Författare :Roxana Quiroga Flores; Bioteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; metals; toxicity; Adsorption; uptake; arsenic; cadmium; lead; methylmercury;

    Sammanfattning : Metal contamination of water bodies has attracted global attention owing to its environmental toxicity, abundance and persistence. Metals such as arsenic, cadmium and mercury are of greater concern since they are toxic even at low concentrations. LÄS MER

  7. 25. Biomarkers of fish consumption and risk of stroke or myocardial infarction

    Författare :Maria Wennberg; Jan-Håkan Jansson; Ingvar Bergdahl; Maria Albin; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; fish consumption; omega-3 fatty acids; eicosapentaenoic acid; docosahexaenoic acid; methylmercury; selenium; lead; cadmium; stroke; myocardial infarction; erythrocytes; food frequency questionnaire; Environmental medicine; Miljömedicin; Epidemiology; epidemiologi; hälso- och sjukvårdsforskning; health services research; medicin; Medicine; Environmental Science; miljövetenskap; näringslära; Nutrition;

    Sammanfattning : The effect of fish consumption on the risk of cardiovascular disease has been extensively studied. Omega-3 fatty acids present in fish, namely eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), have been found to have beneficial effects through several mechanisms. In addition, selenium, an antioxidant, may be protective. LÄS MER