Sökning: "SBR"

Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet SBR.

  1. 1. SBR-technology - use and potential applications for treatment of cold wastewater

    Författare :Stig Morling; Elzbieta Plaza; Jörgen Hanaeus; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Intermittent operation; Water temperature; nitrogen; phosphorus; SBR; reaction rates; Environmental engineering; Miljöteknik;

    Sammanfattning : Biological nutrient removal is used as an indicator of SBR performance at nine different SBRplants operated for a long period at low water temperatures (5 – 10oC). Typically needed aeratedSRT (Solids Residence Time) for complete nitrification is found to be in the range of 6 – 10 days. LÄS MER

  3. 2. Computer simulation of polymer reactions

    Författare :Kersti Strandqvist; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mathematical model; NMR; formation; DSC; vulcanization; SBR; kinetic parameters; urethane;

    Sammanfattning : .... LÄS MER

  4. 3. Managing trafic safety : an approach to the evaluation of new vehicle safety systems

    Författare :Anders Lie; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Road traffic crashes are killing more than one million road users per year, worldwide. Preventive measures to decrease this number are warranted. Relevant measures can be to introduce systematic road traffic safety management and to improve the safety pro- perties of components in the road transport system. LÄS MER

  5. 4. Recurrent groin hernia - Outcome after surgery

    Författare :Dan Sevonius; Lund Kirurgi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Groin hernia; inguinal hernia; recurrence; re-recurrence; mesh repair; chronic pain; hernia register;

    Sammanfattning : Background: According to the Swedish Hernia Register (SHR), the reoperation rate after recurrent groin hernia is more than twice that following primary hernia repair. Aims: To study the impact of method of mesh repair used in recurrent groin hernia surgery on re-recurrence as well as chronic pain and physical disability. LÄS MER

  7. 5. Advanced Schottky Diode Receiver Front-Ends for Terahertz Applications

    Författare :Peter Sobis; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; terahertz electronics; TRL-calibration; frequency converters; down converters; phase shifters; S-parameter measurements; Schottky diodes; subharmonic mixers; radiometers; terahertz technology; submillimetre wave technology; heterodyne receivers; differential phase shifters; sideband separating mixers;

    Sammanfattning : This thesis treats the development of high frequency circuits for increased functionality of terahertz receiver front-ends based on room temperature Schottky diode technology. This includes the study of novel circuit integration schemes, packaging concepts as well as new measurement and characterisation techniques. LÄS MER