Search for dissertations about: "retention index"
Showing result 1 - 5 of 43 swedish dissertations containing the words retention index.
-
1. Methodological aspects of quantitative cardiac molecular imaging
Abstract : The objective of this research was to facilitate the use of quantitative cardiac molecular imaging by developing and validating methods and applications. More specifically:we determined the optimal tracer kinetic model for analysis of 11C-PIB and evaluated the performance of two simpler measures, retention index (RI) and standardized uptake value (SUV), in the quantification of cardiac 11C-PIB uptake in amyloidosis. READ MORE
-
2. Developing tools for non-target analysis and digital archiving of organic urban water pollutants
Abstract : This thesis describes efforts to develop robust methods for the creation and use of digital archives of environmental samples, and proposes guidelines based on the results. Digital archives are repositories that store environmental samples digitally. READ MORE
-
3. Fixed mandibular retainers : a controlled 12-year follow-up
Abstract : Fixed retainer after orthodontic treatment is an increasing retention appliance. For the mandibular incisors there are two different fixed retainers that are commonly used, either a canine-to-canine retainer bonded only to the canines or a twistflex retainer bonded to each of the mandibular incisors and canines. READ MORE
-
4. Modifying kraft pulping to produce a softwood pulp requiring less energy in tissue paper production
Abstract : Modification of softwood kraft pulp by the addition of either polysulfide (PS) or sodium borohydride (NaBH4) has been shown to increase the pulp yield due to a higher retention of glucomannan. The pulps with higher yield gave a paper with higher tensile index than reference pulp, especially at lower degrees of refining. READ MORE
-
5. On Fluoridation of Chewing Sticks (Miswaks) with Respect to Dental Caries
Abstract : The chewing stick known as a “Miswak” is a natural toothbrush that is widely used for cleaning the teeth. It has been used for thousands of years in Asia, Africa and the Middle East. The aim of this thesis was to evaluate the Miswak as a vehicle for fluoride delivery in the oral cavity. READ MORE