Sökning: "chemical safety assessment"

Visar resultat 36 - 40 av 42 avhandlingar innehållade orden chemical safety assessment.

  1. 36. Limiting conditions for a sustained flame over condensed fuels : Analysis by experiments and stagnant layer theory

    Författare :Frida Vermina Plathner; Avdelningen för Brandteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Critical mass flux; diffusion flame; extinction; sustained ignition; chemical heat of combustion; Convective heat transfer coefficient; external heat flux;

    Sammanfattning : Ignition and extinction characteristics of a material determine whether a fire will be initiated and grow. In fire safety engineering, where modellers deal with a multitude of materials, simplified thresholds are commonly used to determine when ignition and extinction occur. LÄS MER

  3. 37. Internal Dosimetry in Nuclear Fuel Fabrication : Occupational Exposure to Uranium Aerosols

    Författare :Edvin Hansson; Mats Eriksson; Håkan Pettersson; Per Roos; Michael Sandborg; Bastian Breustedt; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Uranium; Aerosol; Internal; Dose; Nuclear;

    Sammanfattning : The production of nuclear fuel can be associated with occupational exposure to ionizing radiation from radioactive decay of uranium. Such exposure must be sufficiently low and radiation doses adequately determined. Radiation doses from internal exposure, i.e. LÄS MER

  4. 38. Application of the benchmark dose-response modelling approach for risk characterization of chemicals

    Författare :Antero Vieira da Silva; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Toxicology is the discipline that investigates the possible adverse effects of chemical exposure on human, animal and environmental health. Chemical risk assessment is the process that aims to identify potentially hazardous substances and describes the probability of adverse outcomes associated with their exposure. LÄS MER

  5. 39. Controlling Fusarium Head Blight in oat

    Författare :Alfia Khairullina; Tillämpad biokemi; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; FHB; oat; UDP-glucosyltransferase; deoxynivalenol; mycotoxins; biocontrol; Clonostachys rosea; Fusarium head blight; Fusarium graminearum; endophytes;

    Sammanfattning : Oats (Avena sativa) is a versatile crop grown worldwide for animal feed and human consumption. Humanoat consumption has recently risen due to its various health benefits. However, oats are susceptible toFusarium head blight (FHB) caused by various Fusarium fungi. FHB reduces yield and leads to mycotoxinaccumulation. LÄS MER

  7. 40. Influence of heat on the physical and mechanical properties of selected rock types

    Författare :Christine Saiang; Karl-Johan Loorents; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tunnel fires; heat influences; temperature increase; mechanical properties; physical properties; micro cracks; mineralogy; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

    Sammanfattning : Impelled by the increase in the number of tunnel fires in the last decade alone, wide spread attention has been drawn towards tunnel fire safety studies. Many of these fires occurred in road and railway tunnels involving vehicles and trains. LÄS MER