Search for dissertations about: "provtagning"

Showing result 1 - 5 of 69 swedish dissertations containing the word provtagning.

  1. 1. Chloride profiling in marine concrete - methods and tools for sampling

    Author : Henrik Wall; Avdelningen för Byggnadsmaterial; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; klorider; betong; provtagning; concrete; sampling; chloride;

    Abstract : This project focuses on how to determine the chloride content in concrete structures exposed to marine environment in an accurate way. When analyzing dust from dry drilling in concrete, it is very often a fact that the chloride profiles show extensive variations even if the sampling has been performed within a very concentrated area with the sampling points close to each other. READ MORE

  2. 2. Animating soils : geoarchaeological approaches to past human-environment relationships in the Arctic

    Author : Philip Jerand; Johan Linderholm; Philip I. Buckland; Carl-Gösta Ojala; Umeå universitet; []
    Keywords : HUMANIORA; HUMANITIES; environmental archaeology; sampling; Sámi archaeology; spatial organisation; Arctic archaeology; geoarchaeology; soil formation; historical archaeology; miljöarkeologi; provtagning; samisk arkeologi; rumslig organisering; Arktisk arkeologi; geoarkeologi; jordmånsbildning; historisk arkeologi; Archaeology; arkeologi; environmental archaeology; miljöarkeologi;

    Abstract : In this thesis, soils and sediments have been used as sources of information on past human activity in Arctic environments. The study has combined geoarchaeological methods and techniques with information from historical documents, ethnographic accounts, and archaeological remains to create integrated narratives of human-landscape interactions in the past. READ MORE

  3. 3. Laboratory measurements of airborne emissions from car brakes for clean air

    Author : Guido Perricone; Ulf Olofsson; Fulvio Amato; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Automotive brake; non-exhaust emissions; inertia brake dynamometer; airborne particles; PM10; PN; isokinetic sampling; Rebrake; volatiles; real driving cycle; car brake emission factors; running-in.; Bilbroms; icke-avgasemissioner; skivbromsdynamometer; luftburna partiklar; PM10; PN; isokinetisk provtagning; Rebrake; volatiler; verkliga körcykler; emissionsfaktorer; in-körning.; Machine Design; Maskinkonstruktion;

    Abstract : Brake systems are used to safely stop vehicles. The brake pads are pressed against the brake disc, transforming the kinetic energy of the vehicle into heat to be dissipated. READ MORE

  4. 4. Measuring occupational dust exposure with a passive sampler

    Author : Mariam Shirdel; Ingvar Bergdahl; Britt Andersson; Håkan Wingfors; Christer Johansson; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; dust particles; mineral; PM10; PM2.5; respirable fraction; UNC passive aerosol sampler; working environment;

    Abstract : Objectives: In a working environment it is important to measure dust exposure to evaluate possible health issues. Passive sampling could be an alternative to active sampling with pumps when measuring occupational dust exposure. One passive sampler is the University of North Carolina passive aerosol sampler (UNC sampler). READ MORE

  5. 5. Sampling from a suction induced mini-erosion in human skin. Methodological studies

    Author : Christer Svedman; Malmö Institutionen för kliniska vetenskaper; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; vascular permeability; neurogenic inflammation; glucose; diabetes mellitus; interstitial fluid; transdermal; skin; sampling; Medicine human and vertebrates ; Medicin människa och djur ;

    Abstract : Dermal interstitial fluid (IF) was extracted serially and painlessly by brief suction for as long as 6 days. The erosion was otherwise kept occluded, Sample volumes exceded those required for measuring a wide range of biological substances. Epidermal regeneration was rapid. READ MORE