Search for dissertations about: "Karin Due"

Showing result 1 - 5 of 254 swedish dissertations containing the words Karin Due.

  1. 1. Evaluation of Dust Suppressants for Gravel Roads: Methods Development and Efficiency Studies

    Author : Karin Oscarsson; Andrew Dawson; Karin Edvardsson; Björn Birgisson; Högskolan Dalarna; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gravel road; dust; particulate matter; PM10; horizontal dust diffusion; deteriorations; maintenance; dust control; dust suppressants; efficiency; application rate; leaching; residual concentration; seasonal variations; salt solution; solid salt; calcium chloride; magnesium chloride; lignosulphonate; polysaccharide sugar ; bitumen emulsion; rape oil; starch; surfactant; mesa; clay; fine material content.; Komplexa system - mikrodataanalys; fine material content;

    Abstract : Application of the proper dust suppressant to a gravel road ensures road safety and riding comfort as well as creating a cleaner and healthier environment for residents in buildings adjacent to the road. It also reduces the need and cost for vehicle repair, road maintenance activities, and aggregate supplementation. READ MORE

  2. 2. Analysis of phosphorus retention variations in constructed wetlands receiving variable loads from arable land

    Author : Karin Johannesson; Karin Tonderski; Charlotte Kjaergaard; Stefan Weisner; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : Seven wetlands, constructed on agricultural land in the south of Sweden, were investigated with respect to phosphorus (P) retention. The overall aim was to increase the understanding of P retention and find possible explanations for the variations in retention that have been observed in previous studies. READ MORE

  3. 3. On the Optimization of Schedules of a Multitask Production Cell

    Author : Karin Thörnblad; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Keywords : NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; mathematical optimization; flexible job shop scheduling; mixed integer linear programming MILP ; complexity analysis; mathematical modelling; production planning; multi-purpose machine; dispatching rule; priority function; total flowtime; total tardiness; release date; due date; dispatching rule;

    Abstract : Volvo Aero has invested in a complex production cell containing a set of multipurpose machines. The problem of finding optimal schedules for this multitask cell is a complex combinatorial optimization problem which is recognized as a flexible job shop problem. This thesis proposes an approach to find such schedules using mathematical optimization. READ MORE

  4. 4. Effects on Machinability due to Microstructure Variations in Case Hardening Steel

    Author : Karin Björkeborn; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machinability; Short-term test; Microstructure; Pearlite Nodular Size; Case Hardening Steel; Chip breakability.;

    Abstract : Typical products made of case hardening steel are transmission parts like gear wheels, pinions and crown wheels. Case hardening produces a carbon-rich surface and provides the parts with both enhanced hardness and fatigue life. READ MORE

  5. 5. Mental health and employment amongst persons who resettled in Sweden in 1993 1994 due to the war in Bosnia Herzegovina

    Author : Karin Johansson Blight; Karolinska Institutet; Karolinska Institutet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; Mental health; labour market access; employment; integration; refugees; migrants; Sweden; Bosnia-Herzegovina;

    Abstract : General aim: To explore employment and mental health among people from Bosnia-Herzegovina who came to Sweden in 1993-1994 due to the war. Hypotheses: 1) poor mental health is a barrier to employment; 2) exclusion from the labour market can lead to psychosocial stress. Methods: All data were collected from Oct 2001 to March 2002. READ MORE