Sökning: "internal contamination"

Visar resultat 16 - 20 av 33 avhandlingar innehållade orden internal contamination.

1. 16. Prevention of bacterial colonization in hospital-acquired infections using electrically conducting polymers

   Författare :Salvador Gomez-Carretero; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Biofilms are bacterial assemblies developed as response to adverse environmental conditions and external threats. Within a biofilm, a complex and highly regulated internal architecture is developed, resulting in a network of interconnected microniches. LÄS MER

3. 17. Cats as a biomarker for exposure to POPs in home environments : – with focus on brominated chemicals and associations to feline hyperthyroidism

   Författare :Jessica Norrgran Engdahl; Åke Bergman; Adrian Covaci; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; miljökemi; Environmental Chemistry;

   Sammanfattning : In this thesis, body burden of brominated chemicals such as polybrominated diphenyl ethers (PBDEs) and brominated phenolic substances are explored. The external exposure of cats to these compounds from house dust and their food was also investigated. LÄS MER

4. 18. Ethanol from Softwood - Process Development Based on Steam Pretreatment and SSF

   Författare :Kerstin Stenberg; Avdelningen för kemiteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; economy; infection; inhibition; recirculation; S. cerevisiae; SSF; steam pretreatment; ethanol production; process development; softwood; Carbochemistry; petrochemistry; fuels and explosives technology; Petrokemi; bränslen; sprängämnen;

   Sammanfattning : Fuel ethanol can be produced from lignocellulosics by the enzymatic hydrolysis process, which consists of a pretreatment step prior to hydrolysis, followed by fermentation and finally refining. This thesis deals with the development of the enzymatic process using softwood as raw material. LÄS MER

5. 19. Characterization of energy gases by ultrasound : theory and experiments

   Författare :Pär-Erik Martinsson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; Signal Processing;

   Sammanfattning : The long-term goal with the research presented in this thesis has been to develop an ultrasonic sensor capable of measuring the energy content of energy gases such as natural- and biogas. The energy content can be calculated if the concentration of each constituent of a gas mixture is known. LÄS MER

7. 20. Solar Assisted Pervaporation : A process for the concentration of fruit juices in membrane pouches with solar energy

   Författare :Randi Phinney; Avdelningen för livsmedel och läkemedel; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pervaporation; solar drying; membrane pouch; juice concentration; fruit preservation; marmalade; tangerine; Vangueria infausta; microbiology; water activity; soluble solids; Brix;

   Sammanfattning : Drying has been used for thousands of years to preserve foods. One of the first methods used was open air sun drying which exposes foods directly to solar radiation and ambient air. This method is still used today around the world but it remains underdeveloped on a small-scale for two main reasons. LÄS MER