Search for dissertations about: "Pia Hellström"

Found 2 swedish dissertations containing the words Pia Hellström.

2. 1. Fenton Pre-treatment of a Birch Kraft Pulp for MFC preparation

   Author : Pia Hellström; Helena Håkansson; Anette Heijnesson Hultén; Magnus Paulsson; Monica Ek; Karlstads universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Microfibrillated cellulose; Fenton chemistry; carbonyl groups; surface charge; total charge; Enzymatic hydrolysis; Tensile strength; z-directional strength; Chemical Engineering; Kemiteknik;

   Abstract : The potential to use acidic hydrogen peroxide in the presence of ferrous ions (Fenton’s reagent) as a pre-treatment when producing microfibrillar cellulose (MFC) from a fully bleached birch (Betula verucosa) kraft pulp was investigated and the properties of the produced MFC was compared to the properties of a MFC produced with enzymatic pre-treatment with a monocomponent endoglucanase (FiberCare® R). The mechanical treatment to MFC was performed in a laboratory colloid mill or in a pilot high-pressure homogeniser and the pre-treated pulps as well as the produced MFCs were chemically and morphologically characterised. READ MORE

4. 2. On assessment methods related to pain in dogs with osteoarthritis

   Author : Ann Essner; Karin Hellström; Lena Zetterberg; Rita Sjöström; Pia Gustås; Patricia Hedenqvist; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; assessment methods; behavior; canine; chronic pain; heart rate variability; measurement properties; osteoarthritis; physiotherapy; rehabilitation; Physiotherapy; Sjukgymnastik fysioterapi;

   Abstract : There is a need of valid and reliable assessment methods that are clinically applicable in canine rehabilitation practice. The aim of this thesis was to psychometrically evaluate measurement properties in assessment methods related to pain in naturally occurring canine osteoarthritis. READ MORE