Sökning: "kraft process"
Visar resultat 1 - 5 av 223 avhandlingar innehållade orden kraft process.
1. Improved Usage of Wood Raw Material through Modification of the Kraft Process
Sammanfattning : The kraft process is a complex system with many variables, and though the process is fairly well understood, there is still much we do not know. This thesis examines some aspects of the kraft process that could prove to be of interest for the pulp and paper industry, specifically, the impact of wood chip impregnation and of the chemical structure of xylan on spruce kraft pulp. LÄS MER
2. Xylan Reactions in Kraft Cooking : Process and Product Considerations
Sammanfattning : Xylan is the main hemicellulose in birch, eucalyptus, and most other hardwood species. During kraft pulping a series of chemical reactions and physical processes involving xylan takes place. LÄS MER
3. Calcium Aluminate based Cement as Dental Restorative Materials
Sammanfattning : This thesis presents the results from the development process of a ceramic dental filling material based on calcium aluminate cement. The main focus of the work concerns dimensional changes during setting, hardening and curing and the understanding of the factors controlling the dimensional stability of the system. LÄS MER
4. Tala fram texten : När barn med läs- och skrivsvårigheter skriver med tal-till-text
Sammanfattning : Effective writing is a crucial skill that requires not only the mastery of various sub-processes but also deliberate orchestration of those sub-processes within the constraints of limited working- memory capacity. In practice, some of those sub-processes, such as transcription (spelling and handwriting), need to be automatised to free up capacity for other processes. LÄS MER
5. Spectrophotometry in process analytical chemistry : applications to kraft liquors
Sammanfattning : .... LÄS MER