Sökning: "helena lundberg"
Hittade 5 avhandlingar innehållade orden helena lundberg.
1. Amidst the green Metal-catalyzed amide formation from carboxylic acids
Sammanfattning : This thesis describes novel methods for transition metal-catalyzed transformation of non-activated carboxylic acids to amides. It was found that 2-10 mol% of zirconium(IV) chloride or 10-20 mol% titanium(IV) isopropoxide catalyzed the formation of a range of secondary and tertiary amides in good to excellent yields (61-99%) in THF at 70-100°C, with molecular sieves present as water scavengers. LÄS MER
2. Group (IV) Metal-Catalyzed Direct Amidation : Synthesis and Mechanistic Considerations
Sammanfattning : The amide unit constitutes the backbone of proteins, and it is present in a large number of pharmaceutically active molecules, polymeric materials such as nylon and Kevlar, as well as in food additives like aspartame. Amides are produced in enormous amounts every year, thus, environmentally friendly and selective methods for their formation are of great importance. LÄS MER
3. Strävan efter värdighet : En studie av servicearbete
Sammanfattning : The focus of this study is dignity in low status service work. Using labels such as bad jobs, McJobs and dirty work, these jobs have been described as low-skilled, low-paid, monotonous and physically demanding with lack of voice and no job security. LÄS MER
4. "Pre- versus Post Birth Parental Influences in the Formation of Health: Lessons from a Large Sample of Adoptees" and "Birth Order and Child Health"
Sammanfattning : .... LÄS MER
5. Essays on Income Taxation and Wealth Inequality
Sammanfattning : This thesis is concerned with inequality, redistribution and taxation, in particular the taxation of labour income and the distribution of wealth. Most of the analysis is focused on Sweden. The thesis consists of four self-contained essays.Essay 1: “Analyzing tax reforms using the Swedish Labour Income Microsimulation Model”. LÄS MER