Sökning: "Early-life conditions"

Visar resultat 26 - 30 av 55 avhandlingar innehållade orden Early-life conditions.

  1. 26. A study on wear characteristics of high strength steels under sliding contact

    Författare :Abdulbaset Mussa; Pavel Krakhmalev; Jens Bergström; Jens Hardell; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High strength steels; thread joint wear; punch wear; sliding wear; surface cracking; reciprocal sliding; fatigue; surface delamination; white etching layer; nano-structured layer; friction; Materialteknik; Materials Engineering;

    Sammanfattning : In the last decades, significant improvements regarding the design, materials and technology of rock drills have been made. Likewise, in sheet metal forming, forming tools experience very high contact pressures when processing high strength steel sheets. LÄS MER

  3. 27. Origin of life : testing the isotopic resonance hypothesis

    Författare :Xueshu Xie; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The Miller-Urey (MU) experiment provided evidence supporting the abiogenesis theory, and is considered to be the seminal experiment in the context of origin of life. The MU mixture produced in the experiment is assumed to be an essential raw material for life emergence on the primitive Earth or beyond. LÄS MER

  4. 28. A flying start : Adapted hatching and post-hatch feeding in broiler chickens

    Författare :Malin Boyner; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Conventional hatching practices do not involve provision of feed and water to broiler chickens before placement at the rearing farm. This can pose problems, especially for early hatchlings, which remain feed-restricted for a considerable period due to biological variation in hatch time. LÄS MER

  5. 29. Long-term exposure to air pollution from road traffic and lung function in children and adolescents

    Författare :Erica S Schultz; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Lung function in early life is an important predictor of peak lung function and later decline in adults. However, lung development may also be influenced by factors later in childhood and adolescence. LÄS MER

  7. 30. Preterm birth and allergic disease

    Författare :Niki Mitselou; Jonas Ludvigsson; Erik Melén; Kari Christine Nadeau; Örebro universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Allergen-specific immunotherapy; allergic rhinitis; caesarean delivery; epidemiology; preterm birth; sensitization; paediatrics; pregnancy;

    Sammanfattning : Allergic diseases are very common in children and young adults, while there is an ongoing interest worldwide in exploring the early origins of these conditions. The perinatal period is considered crucial as it encompasses the maturation of gut microbiota and the establishment of an efficient immunoregulation. LÄS MER