Sökning: " retention"
Visar resultat 1 - 5 av 845 avhandlingar innehållade ordet retention.
1. Orthodontic retention : studies of retention capacity, cost-effectiveness and long-term stability
Sammanfattning : Retention strategies, cost-effectiveness and long-term stability oftreatment outcome are essential aspects of orthodontic treatmentplanning.The overall aim of this thesis was to compare and evaluate threedifferent retention strategies, with special reference to short- andlong-term clinical stability and cost-effectiveness. LÄS MER
2. Retention of atherogenic lipoproteins in atherogenesis
Sammanfattning : Atherosclerosis is the most common cause of death in the industrialized world. The diseaseis characterized by lipid accumulation and inflammation in the arterial wall, which may leadto obstruction of the blood flow. LÄS MER
3. Improvement of the retention-fromation relationship using three-component retention aid systems
Sammanfattning : .... LÄS MER
4. Particulate phosphorus accumulation and net retention in constructed wetlands receiving agricultural runoff : Critical analysis of factors affecting retention estimates
Sammanfattning : Övergödning är ett allvarligt miljöproblem, som bland annat orsakar omfattande blomningar av alger och blågrönbakterier. I söt- och brackvatten är fosfor ofta det mest begränsande näringsämnet för dessa organismer, varför en minskning av fosfortillförseln är nödvändig för att nå förbättringar. LÄS MER
5. Polybrominated dibenzo-p-dioxins : Natural formation mechanisms and biota retention, maternal transfer, and effects
Sammanfattning : Polybrominated dibenzo-p-dioxins (PBDD) and dibenzofurans (PBDF) are a group of compounds of emerging interest as potential environmental stressors. Their structures as well as toxic responses are similar to the highly characterized toxicants polychlorinated dibenzo-p-dioxins. LÄS MER