Sökning: "Hög höjd"

Visar resultat 21 - 25 av 39 avhandlingar innehållade orden Hög höjd.

  1. 21. Flight Behaviour of Passerines on Nocturnal Migration

    Författare :Cecilia Nilsson; Evolutionär ekologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bird migration; Passerines; Flight Behaviour; Tracking radar; Optimal migration; Flight speed; Airspeed; Wind drift; Nocturnal migration; Coastline effects; Flight directions; Reverse migration;

    Sammanfattning : Many passerines migrate during the night and at high altitudes, making their migration difficult to observe. By using tracking radars we have been able to make exact observations of the flight behaviour of passerines on nocturnal migration, which has enabled us to test several hypotheses about adaptive values and constraints regarding migratory behaviour in different ecological contexts. LÄS MER

  3. 22. Aerosol-Cloud-Precipitation Interactions - Studied using combinations of remote sensing and in-situ data

    Författare :Moa Sporre; Ergonomi och aerosolteknologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; clouds; aerosol particles; climate; precipitation; satellite data; Fysicumarkivet A:2016:Sporre;

    Sammanfattning : Cloud droplets never form in the atmosphere without a seed in the form of an aerosol particle. Changes in number concentrations of aerosol particles in the atmosphere can therefore affect the number of droplets in a cloud. LÄS MER

  4. 23. Sketching the Invisible : Patterns of Church and City in Theodoret of Cyrrhus' Philotheos Historia

    Författare :Andreas Westergren; Kyrko- och missionsstudier; []
    Nyckelord :HUMANIORA; HUMANITIES; Late Antiquity; biography; hagiography; panegyric; asceticism; monasticism; Syria; Antioch; Symeon the Stylite; pilgrimage; relics; cult of the saints; civic ideals; invention of tradition; the role of the bishop; ecclesiology; sacralization; christianization; philosophy; Neoplatonism; Libanius; Dionysius Areopagita;

    Sammanfattning : The fundamental question in this work concerns the ideal relation between asceticism and society in a 5th c. writing (C.E.), the Philotheos Historia (PH), written in elaborate Greek by the learned bishop of Cyrrhus, Theodoret. LÄS MER

  5. 24. Strength grading of structural timber and EWP laminations of Norway spruce : Development potentials

    Författare :Jan Oscarsson; Anders Olsson; Marie Johansson; Mikael Perstorper; SP Sveriges Tekniska Forskningsinstitut; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; bending strength; fibre angle; grain angle; knots; laser scanning; machine strength grading; modulus of elasticity; strain measurement; structural timber; tensile strength; wood; böjhållfasthet; draghållfasthet; elasticitetsmodul; fibervinkel; konstruktionsvirke; kvistar; laserskanning; maskinell hållfasthetssortering; trä; töjningsmätning; Byggteknik; Civil engineering;

    Sammanfattning : Strength grading of structural timber is a process by which value is added to sawn products. It is to the greater part carried out using machine grading based on statistical relationships between so called indicating properties and bending strength. LÄS MER

  7. 25. IGF, PI3K and HIF-2 in Normal and Tumor Development

    Författare :Sofie Mohlin; Institutionen för translationell medicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neuroblastoma; Hypoxia; Insulin-like Growth Factor; PI3K; HIF-2alpha; Cancer; Development;

    Sammanfattning : Cells adapt to oxygen shortage, hypoxia, by inducing a transcriptional shift governed mainly by Hypoxia Inducible Factor (HIF)-1 and HIF-2. In various cancer forms, including neuroblastoma, high expression of HIF-2α correlates with disseminated disease and poor outcome. LÄS MER