Sökning: "Helene Ek"

Hittade 3 avhandlingar innehållade orden Helene Ek.

1. 1. Hazard assessment of 2,4,6-trinitrotoluene (TNT) from dumped ammunition in the sea

   Författare :Helene Ek; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : .... LÄS MER

3. 2. Extended Mercerization Prior to Carboxymethyl Cellulose Preparation

   Författare :Heléne Almlöf; Ulf Germgård; Björn Kreutz; Monica Ek; Karlstads universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Carboxymethyl cellulose; Mercerization; DS; FT Raman spectroscopy; Filtration ability; Chemical engineering; Kemiteknik; Chemical Engineering; Kemiteknik;

   Sammanfattning : Carboxymethyl cellulose (CMC) is produced commercially in a two-stage process consisting of a mercerization stage, where the pulp is treated with alkali in a water alcohol solution, followed by an etherification stage in which monochloroacetic acid is added to the pulp slurry. In this thesis an extended mercerization stage of a spruce ether pulp was investigated where the parameters studied were the ratio of cellulose I and II, concentration of alkali, temperature and retention time. LÄS MER

4. 3. Comorbidity and complications in neurological diseases

   Författare :Heléne E.K. Sundelin; Jonas F. Ludvigsson; Henrik Larsson; Rodney Scott; Örebro universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; antiepileptic drugs; autism; cerebral palsy; child; Ehlers-Danlos Syndrome; epilepsy; obstetric; pregnancy; traffic accidents;

   Sammanfattning : Background: Neurological diseases are complex and many share etiology as well as comorbidities. Epilepsy, a brain disorder characterized by an enduring predisposition to generate epileptic seizures and autism spectrum disorder (ASD), are considered to be associated, but the connection is still not fully uncovered. LÄS MER